| // Inferno utils/6l/span.c |
| // https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/span.c |
| // |
| // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. |
| // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) |
| // Portions Copyright © 1997-1999 Vita Nuova Limited |
| // Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) |
| // Portions Copyright © 2004,2006 Bruce Ellis |
| // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) |
| // Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others |
| // Portions Copyright © 2009 The Go Authors. All rights reserved. |
| // |
| // Permission is hereby granted, free of charge, to any person obtaining a copy |
| // of this software and associated documentation files (the "Software"), to deal |
| // in the Software without restriction, including without limitation the rights |
| // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| // copies of the Software, and to permit persons to whom the Software is |
| // furnished to do so, subject to the following conditions: |
| // |
| // The above copyright notice and this permission notice shall be included in |
| // all copies or substantial portions of the Software. |
| // |
| // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
| // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
| // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
| // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
| // THE SOFTWARE. |
| |
| package x86 |
| |
| import ( |
| "cmd/internal/obj" |
| "cmd/internal/objabi" |
| "cmd/internal/sys" |
| "encoding/binary" |
| "fmt" |
| "log" |
| "strings" |
| ) |
| |
| var ( |
| plan9privates *obj.LSym |
| deferreturn *obj.LSym |
| ) |
| |
| // Instruction layout. |
| |
| // Loop alignment constants: |
| // want to align loop entry to loopAlign-byte boundary, |
| // and willing to insert at most maxLoopPad bytes of NOP to do so. |
| // We define a loop entry as the target of a backward jump. |
| // |
| // gcc uses maxLoopPad = 10 for its 'generic x86-64' config, |
| // and it aligns all jump targets, not just backward jump targets. |
| // |
| // As of 6/1/2012, the effect of setting maxLoopPad = 10 here |
| // is very slight but negative, so the alignment is disabled by |
| // setting MaxLoopPad = 0. The code is here for reference and |
| // for future experiments. |
| // |
| const ( |
| loopAlign = 16 |
| maxLoopPad = 0 |
| ) |
| |
| // Bit flags that are used to express jump target properties. |
| const ( |
| // branchBackwards marks targets that are located behind. |
| // Used to express jumps to loop headers. |
| branchBackwards = (1 << iota) |
| // branchShort marks branches those target is close, |
| // with offset is in -128..127 range. |
| branchShort |
| // branchLoopHead marks loop entry. |
| // Used to insert padding for misaligned loops. |
| branchLoopHead |
| ) |
| |
| // opBytes holds optab encoding bytes. |
| // Each ytab reserves fixed amount of bytes in this array. |
| // |
| // The size should be the minimal number of bytes that |
| // are enough to hold biggest optab op lines. |
| type opBytes [31]uint8 |
| |
| type Optab struct { |
| as obj.As |
| ytab []ytab |
| prefix uint8 |
| op opBytes |
| } |
| |
| type movtab struct { |
| as obj.As |
| ft uint8 |
| f3t uint8 |
| tt uint8 |
| code uint8 |
| op [4]uint8 |
| } |
| |
| const ( |
| Yxxx = iota |
| Ynone |
| Yi0 // $0 |
| Yi1 // $1 |
| Yu2 // $x, x fits in uint2 |
| Yi8 // $x, x fits in int8 |
| Yu8 // $x, x fits in uint8 |
| Yu7 // $x, x in 0..127 (fits in both int8 and uint8) |
| Ys32 |
| Yi32 |
| Yi64 |
| Yiauto |
| Yal |
| Ycl |
| Yax |
| Ycx |
| Yrb |
| Yrl |
| Yrl32 // Yrl on 32-bit system |
| Yrf |
| Yf0 |
| Yrx |
| Ymb |
| Yml |
| Ym |
| Ybr |
| Ycs |
| Yss |
| Yds |
| Yes |
| Yfs |
| Ygs |
| Ygdtr |
| Yidtr |
| Yldtr |
| Ymsw |
| Ytask |
| Ycr0 |
| Ycr1 |
| Ycr2 |
| Ycr3 |
| Ycr4 |
| Ycr5 |
| Ycr6 |
| Ycr7 |
| Ycr8 |
| Ydr0 |
| Ydr1 |
| Ydr2 |
| Ydr3 |
| Ydr4 |
| Ydr5 |
| Ydr6 |
| Ydr7 |
| Ytr0 |
| Ytr1 |
| Ytr2 |
| Ytr3 |
| Ytr4 |
| Ytr5 |
| Ytr6 |
| Ytr7 |
| Ymr |
| Ymm |
| Yxr0 // X0 only. "<XMM0>" notation in Intel manual. |
| YxrEvexMulti4 // [ X<n> - X<n+3> ]; multisource YxrEvex |
| Yxr // X0..X15 |
| YxrEvex // X0..X31 |
| Yxm |
| YxmEvex // YxrEvex+Ym |
| Yxvm // VSIB vector array; vm32x/vm64x |
| YxvmEvex // Yxvm which permits High-16 X register as index. |
| YyrEvexMulti4 // [ Y<n> - Y<n+3> ]; multisource YyrEvex |
| Yyr // Y0..Y15 |
| YyrEvex // Y0..Y31 |
| Yym |
| YymEvex // YyrEvex+Ym |
| Yyvm // VSIB vector array; vm32y/vm64y |
| YyvmEvex // Yyvm which permits High-16 Y register as index. |
| YzrMulti4 // [ Z<n> - Z<n+3> ]; multisource YzrEvex |
| Yzr // Z0..Z31 |
| Yzm // Yzr+Ym |
| Yzvm // VSIB vector array; vm32z/vm64z |
| Yk0 // K0 |
| Yknot0 // K1..K7; write mask |
| Yk // K0..K7; used for KOP |
| Ykm // Yk+Ym; used for KOP |
| Ytls |
| Ytextsize |
| Yindir |
| Ymax |
| ) |
| |
| const ( |
| Zxxx = iota |
| Zlit |
| Zlitm_r |
| Zlitr_m |
| Zlit_m_r |
| Z_rp |
| Zbr |
| Zcall |
| Zcallcon |
| Zcallduff |
| Zcallind |
| Zcallindreg |
| Zib_ |
| Zib_rp |
| Zibo_m |
| Zibo_m_xm |
| Zil_ |
| Zil_rp |
| Ziq_rp |
| Zilo_m |
| Zjmp |
| Zjmpcon |
| Zloop |
| Zo_iw |
| Zm_o |
| Zm_r |
| Z_m_r |
| Zm2_r |
| Zm_r_xm |
| Zm_r_i_xm |
| Zm_r_xm_nr |
| Zr_m_xm_nr |
| Zibm_r // mmx1,mmx2/mem64,imm8 |
| Zibr_m |
| Zmb_r |
| Zaut_r |
| Zo_m |
| Zo_m64 |
| Zpseudo |
| Zr_m |
| Zr_m_xm |
| Zrp_ |
| Z_ib |
| Z_il |
| Zm_ibo |
| Zm_ilo |
| Zib_rr |
| Zil_rr |
| Zbyte |
| |
| Zvex_rm_v_r |
| Zvex_rm_v_ro |
| Zvex_r_v_rm |
| Zvex_i_rm_vo |
| Zvex_v_rm_r |
| Zvex_i_rm_r |
| Zvex_i_r_v |
| Zvex_i_rm_v_r |
| Zvex |
| Zvex_rm_r_vo |
| Zvex_i_r_rm |
| Zvex_hr_rm_v_r |
| |
| Zevex_first |
| Zevex_i_r_k_rm |
| Zevex_i_r_rm |
| Zevex_i_rm_k_r |
| Zevex_i_rm_k_vo |
| Zevex_i_rm_r |
| Zevex_i_rm_v_k_r |
| Zevex_i_rm_v_r |
| Zevex_i_rm_vo |
| Zevex_k_rmo |
| Zevex_r_k_rm |
| Zevex_r_v_k_rm |
| Zevex_r_v_rm |
| Zevex_rm_k_r |
| Zevex_rm_v_k_r |
| Zevex_rm_v_r |
| Zevex_last |
| |
| Zmax |
| ) |
| |
| const ( |
| Px = 0 |
| Px1 = 1 // symbolic; exact value doesn't matter |
| P32 = 0x32 // 32-bit only |
| Pe = 0x66 // operand escape |
| Pm = 0x0f // 2byte opcode escape |
| Pq = 0xff // both escapes: 66 0f |
| Pb = 0xfe // byte operands |
| Pf2 = 0xf2 // xmm escape 1: f2 0f |
| Pf3 = 0xf3 // xmm escape 2: f3 0f |
| Pef3 = 0xf5 // xmm escape 2 with 16-bit prefix: 66 f3 0f |
| Pq3 = 0x67 // xmm escape 3: 66 48 0f |
| Pq4 = 0x68 // xmm escape 4: 66 0F 38 |
| Pq4w = 0x69 // Pq4 with Rex.w 66 0F 38 |
| Pq5 = 0x6a // xmm escape 5: F3 0F 38 |
| Pq5w = 0x6b // Pq5 with Rex.w F3 0F 38 |
| Pfw = 0xf4 // Pf3 with Rex.w: f3 48 0f |
| Pw = 0x48 // Rex.w |
| Pw8 = 0x90 // symbolic; exact value doesn't matter |
| Py = 0x80 // defaults to 64-bit mode |
| Py1 = 0x81 // symbolic; exact value doesn't matter |
| Py3 = 0x83 // symbolic; exact value doesn't matter |
| Pavx = 0x84 // symbolic: exact value doesn't matter |
| |
| RxrEvex = 1 << 4 // AVX512 extension to REX.R/VEX.R |
| Rxw = 1 << 3 // =1, 64-bit operand size |
| Rxr = 1 << 2 // extend modrm reg |
| Rxx = 1 << 1 // extend sib index |
| Rxb = 1 << 0 // extend modrm r/m, sib base, or opcode reg |
| ) |
| |
| const ( |
| // Encoding for VEX prefix in tables. |
| // The P, L, and W fields are chosen to match |
| // their eventual locations in the VEX prefix bytes. |
| |
| // Encoding for VEX prefix in tables. |
| // The P, L, and W fields are chosen to match |
| // their eventual locations in the VEX prefix bytes. |
| |
| // Using spare bit to make leading [E]VEX encoding byte different from |
| // 0x0f even if all other VEX fields are 0. |
| avxEscape = 1 << 6 |
| |
| // P field - 2 bits |
| vex66 = 1 << 0 |
| vexF3 = 2 << 0 |
| vexF2 = 3 << 0 |
| // L field - 1 bit |
| vexLZ = 0 << 2 |
| vexLIG = 0 << 2 |
| vex128 = 0 << 2 |
| vex256 = 1 << 2 |
| // W field - 1 bit |
| vexWIG = 0 << 7 |
| vexW0 = 0 << 7 |
| vexW1 = 1 << 7 |
| // M field - 5 bits, but mostly reserved; we can store up to 3 |
| vex0F = 1 << 3 |
| vex0F38 = 2 << 3 |
| vex0F3A = 3 << 3 |
| ) |
| |
| var ycover [Ymax * Ymax]uint8 |
| |
| var reg [MAXREG]int |
| |
| var regrex [MAXREG + 1]int |
| |
| var ynone = []ytab{ |
| {Zlit, 1, argList{}}, |
| } |
| |
| var ytext = []ytab{ |
| {Zpseudo, 0, argList{Ymb, Ytextsize}}, |
| {Zpseudo, 1, argList{Ymb, Yi32, Ytextsize}}, |
| } |
| |
| var ynop = []ytab{ |
| {Zpseudo, 0, argList{}}, |
| {Zpseudo, 0, argList{Yiauto}}, |
| {Zpseudo, 0, argList{Yml}}, |
| {Zpseudo, 0, argList{Yrf}}, |
| {Zpseudo, 0, argList{Yxr}}, |
| {Zpseudo, 0, argList{Yiauto}}, |
| {Zpseudo, 0, argList{Yml}}, |
| {Zpseudo, 0, argList{Yrf}}, |
| {Zpseudo, 1, argList{Yxr}}, |
| } |
| |
| var yfuncdata = []ytab{ |
| {Zpseudo, 0, argList{Yi32, Ym}}, |
| } |
| |
| var ypcdata = []ytab{ |
| {Zpseudo, 0, argList{Yi32, Yi32}}, |
| } |
| |
| var yxorb = []ytab{ |
| {Zib_, 1, argList{Yi32, Yal}}, |
| {Zibo_m, 2, argList{Yi32, Ymb}}, |
| {Zr_m, 1, argList{Yrb, Ymb}}, |
| {Zm_r, 1, argList{Ymb, Yrb}}, |
| } |
| |
| var yaddl = []ytab{ |
| {Zibo_m, 2, argList{Yi8, Yml}}, |
| {Zil_, 1, argList{Yi32, Yax}}, |
| {Zilo_m, 2, argList{Yi32, Yml}}, |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| } |
| |
| var yincl = []ytab{ |
| {Z_rp, 1, argList{Yrl}}, |
| {Zo_m, 2, argList{Yml}}, |
| } |
| |
| var yincq = []ytab{ |
| {Zo_m, 2, argList{Yml}}, |
| } |
| |
| var ycmpb = []ytab{ |
| {Z_ib, 1, argList{Yal, Yi32}}, |
| {Zm_ibo, 2, argList{Ymb, Yi32}}, |
| {Zm_r, 1, argList{Ymb, Yrb}}, |
| {Zr_m, 1, argList{Yrb, Ymb}}, |
| } |
| |
| var ycmpl = []ytab{ |
| {Zm_ibo, 2, argList{Yml, Yi8}}, |
| {Z_il, 1, argList{Yax, Yi32}}, |
| {Zm_ilo, 2, argList{Yml, Yi32}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| } |
| |
| var yshb = []ytab{ |
| {Zo_m, 2, argList{Yi1, Ymb}}, |
| {Zibo_m, 2, argList{Yu8, Ymb}}, |
| {Zo_m, 2, argList{Ycx, Ymb}}, |
| } |
| |
| var yshl = []ytab{ |
| {Zo_m, 2, argList{Yi1, Yml}}, |
| {Zibo_m, 2, argList{Yu8, Yml}}, |
| {Zo_m, 2, argList{Ycl, Yml}}, |
| {Zo_m, 2, argList{Ycx, Yml}}, |
| } |
| |
| var ytestl = []ytab{ |
| {Zil_, 1, argList{Yi32, Yax}}, |
| {Zilo_m, 2, argList{Yi32, Yml}}, |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| } |
| |
| var ymovb = []ytab{ |
| {Zr_m, 1, argList{Yrb, Ymb}}, |
| {Zm_r, 1, argList{Ymb, Yrb}}, |
| {Zib_rp, 1, argList{Yi32, Yrb}}, |
| {Zibo_m, 2, argList{Yi32, Ymb}}, |
| } |
| |
| var ybtl = []ytab{ |
| {Zibo_m, 2, argList{Yi8, Yml}}, |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| } |
| |
| var ymovw = []ytab{ |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| {Zil_rp, 1, argList{Yi32, Yrl}}, |
| {Zilo_m, 2, argList{Yi32, Yml}}, |
| {Zaut_r, 2, argList{Yiauto, Yrl}}, |
| } |
| |
| var ymovl = []ytab{ |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| {Zil_rp, 1, argList{Yi32, Yrl}}, |
| {Zilo_m, 2, argList{Yi32, Yml}}, |
| {Zm_r_xm, 1, argList{Yml, Ymr}}, // MMX MOVD |
| {Zr_m_xm, 1, argList{Ymr, Yml}}, // MMX MOVD |
| {Zm_r_xm, 2, argList{Yml, Yxr}}, // XMM MOVD (32 bit) |
| {Zr_m_xm, 2, argList{Yxr, Yml}}, // XMM MOVD (32 bit) |
| {Zaut_r, 2, argList{Yiauto, Yrl}}, |
| } |
| |
| var yret = []ytab{ |
| {Zo_iw, 1, argList{}}, |
| {Zo_iw, 1, argList{Yi32}}, |
| } |
| |
| var ymovq = []ytab{ |
| // valid in 32-bit mode |
| {Zm_r_xm_nr, 1, argList{Ym, Ymr}}, // 0x6f MMX MOVQ (shorter encoding) |
| {Zr_m_xm_nr, 1, argList{Ymr, Ym}}, // 0x7f MMX MOVQ |
| {Zm_r_xm_nr, 2, argList{Yxr, Ymr}}, // Pf2, 0xd6 MOVDQ2Q |
| {Zm_r_xm_nr, 2, argList{Yxm, Yxr}}, // Pf3, 0x7e MOVQ xmm1/m64 -> xmm2 |
| {Zr_m_xm_nr, 2, argList{Yxr, Yxm}}, // Pe, 0xd6 MOVQ xmm1 -> xmm2/m64 |
| |
| // valid only in 64-bit mode, usually with 64-bit prefix |
| {Zr_m, 1, argList{Yrl, Yml}}, // 0x89 |
| {Zm_r, 1, argList{Yml, Yrl}}, // 0x8b |
| {Zilo_m, 2, argList{Ys32, Yrl}}, // 32 bit signed 0xc7,(0) |
| {Ziq_rp, 1, argList{Yi64, Yrl}}, // 0xb8 -- 32/64 bit immediate |
| {Zilo_m, 2, argList{Yi32, Yml}}, // 0xc7,(0) |
| {Zm_r_xm, 1, argList{Ymm, Ymr}}, // 0x6e MMX MOVD |
| {Zr_m_xm, 1, argList{Ymr, Ymm}}, // 0x7e MMX MOVD |
| {Zm_r_xm, 2, argList{Yml, Yxr}}, // Pe, 0x6e MOVD xmm load |
| {Zr_m_xm, 2, argList{Yxr, Yml}}, // Pe, 0x7e MOVD xmm store |
| {Zaut_r, 1, argList{Yiauto, Yrl}}, // 0 built-in LEAQ |
| } |
| |
| var ymovbe = []ytab{ |
| {Zlitm_r, 3, argList{Ym, Yrl}}, |
| {Zlitr_m, 3, argList{Yrl, Ym}}, |
| } |
| |
| var ym_rl = []ytab{ |
| {Zm_r, 1, argList{Ym, Yrl}}, |
| } |
| |
| var yrl_m = []ytab{ |
| {Zr_m, 1, argList{Yrl, Ym}}, |
| } |
| |
| var ymb_rl = []ytab{ |
| {Zmb_r, 1, argList{Ymb, Yrl}}, |
| } |
| |
| var yml_rl = []ytab{ |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| } |
| |
| var yrl_ml = []ytab{ |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| } |
| |
| var yml_mb = []ytab{ |
| {Zr_m, 1, argList{Yrb, Ymb}}, |
| {Zm_r, 1, argList{Ymb, Yrb}}, |
| } |
| |
| var yrb_mb = []ytab{ |
| {Zr_m, 1, argList{Yrb, Ymb}}, |
| } |
| |
| var yxchg = []ytab{ |
| {Z_rp, 1, argList{Yax, Yrl}}, |
| {Zrp_, 1, argList{Yrl, Yax}}, |
| {Zr_m, 1, argList{Yrl, Yml}}, |
| {Zm_r, 1, argList{Yml, Yrl}}, |
| } |
| |
| var ydivl = []ytab{ |
| {Zm_o, 2, argList{Yml}}, |
| } |
| |
| var ydivb = []ytab{ |
| {Zm_o, 2, argList{Ymb}}, |
| } |
| |
| var yimul = []ytab{ |
| {Zm_o, 2, argList{Yml}}, |
| {Zib_rr, 1, argList{Yi8, Yrl}}, |
| {Zil_rr, 1, argList{Yi32, Yrl}}, |
| {Zm_r, 2, argList{Yml, Yrl}}, |
| } |
| |
| var yimul3 = []ytab{ |
| {Zibm_r, 2, argList{Yi8, Yml, Yrl}}, |
| {Zibm_r, 2, argList{Yi32, Yml, Yrl}}, |
| } |
| |
| var ybyte = []ytab{ |
| {Zbyte, 1, argList{Yi64}}, |
| } |
| |
| var yin = []ytab{ |
| {Zib_, 1, argList{Yi32}}, |
| {Zlit, 1, argList{}}, |
| } |
| |
| var yint = []ytab{ |
| {Zib_, 1, argList{Yi32}}, |
| } |
| |
| var ypushl = []ytab{ |
| {Zrp_, 1, argList{Yrl}}, |
| {Zm_o, 2, argList{Ym}}, |
| {Zib_, 1, argList{Yi8}}, |
| {Zil_, 1, argList{Yi32}}, |
| } |
| |
| var ypopl = []ytab{ |
| {Z_rp, 1, argList{Yrl}}, |
| {Zo_m, 2, argList{Ym}}, |
| } |
| |
| var ywrfsbase = []ytab{ |
| {Zm_o, 2, argList{Yrl}}, |
| } |
| |
| var yrdrand = []ytab{ |
| {Zo_m, 2, argList{Yrl}}, |
| } |
| |
| var yclflush = []ytab{ |
| {Zo_m, 2, argList{Ym}}, |
| } |
| |
| var ybswap = []ytab{ |
| {Z_rp, 2, argList{Yrl}}, |
| } |
| |
| var yscond = []ytab{ |
| {Zo_m, 2, argList{Ymb}}, |
| } |
| |
| var yjcond = []ytab{ |
| {Zbr, 0, argList{Ybr}}, |
| {Zbr, 0, argList{Yi0, Ybr}}, |
| {Zbr, 1, argList{Yi1, Ybr}}, |
| } |
| |
| var yloop = []ytab{ |
| {Zloop, 1, argList{Ybr}}, |
| } |
| |
| var ycall = []ytab{ |
| {Zcallindreg, 0, argList{Yml}}, |
| {Zcallindreg, 2, argList{Yrx, Yrx}}, |
| {Zcallind, 2, argList{Yindir}}, |
| {Zcall, 0, argList{Ybr}}, |
| {Zcallcon, 1, argList{Yi32}}, |
| } |
| |
| var yduff = []ytab{ |
| {Zcallduff, 1, argList{Yi32}}, |
| } |
| |
| var yjmp = []ytab{ |
| {Zo_m64, 2, argList{Yml}}, |
| {Zjmp, 0, argList{Ybr}}, |
| {Zjmpcon, 1, argList{Yi32}}, |
| } |
| |
| var yfmvd = []ytab{ |
| {Zm_o, 2, argList{Ym, Yf0}}, |
| {Zo_m, 2, argList{Yf0, Ym}}, |
| {Zm_o, 2, argList{Yrf, Yf0}}, |
| {Zo_m, 2, argList{Yf0, Yrf}}, |
| } |
| |
| var yfmvdp = []ytab{ |
| {Zo_m, 2, argList{Yf0, Ym}}, |
| {Zo_m, 2, argList{Yf0, Yrf}}, |
| } |
| |
| var yfmvf = []ytab{ |
| {Zm_o, 2, argList{Ym, Yf0}}, |
| {Zo_m, 2, argList{Yf0, Ym}}, |
| } |
| |
| var yfmvx = []ytab{ |
| {Zm_o, 2, argList{Ym, Yf0}}, |
| } |
| |
| var yfmvp = []ytab{ |
| {Zo_m, 2, argList{Yf0, Ym}}, |
| } |
| |
| var yfcmv = []ytab{ |
| {Zm_o, 2, argList{Yrf, Yf0}}, |
| } |
| |
| var yfadd = []ytab{ |
| {Zm_o, 2, argList{Ym, Yf0}}, |
| {Zm_o, 2, argList{Yrf, Yf0}}, |
| {Zo_m, 2, argList{Yf0, Yrf}}, |
| } |
| |
| var yfxch = []ytab{ |
| {Zo_m, 2, argList{Yf0, Yrf}}, |
| {Zm_o, 2, argList{Yrf, Yf0}}, |
| } |
| |
| var ycompp = []ytab{ |
| {Zo_m, 2, argList{Yf0, Yrf}}, // botch is really f0,f1 |
| } |
| |
| var ystsw = []ytab{ |
| {Zo_m, 2, argList{Ym}}, |
| {Zlit, 1, argList{Yax}}, |
| } |
| |
| var ysvrs_mo = []ytab{ |
| {Zm_o, 2, argList{Ym}}, |
| } |
| |
| // unaryDst version of "ysvrs_mo". |
| var ysvrs_om = []ytab{ |
| {Zo_m, 2, argList{Ym}}, |
| } |
| |
| var ymm = []ytab{ |
| {Zm_r_xm, 1, argList{Ymm, Ymr}}, |
| {Zm_r_xm, 2, argList{Yxm, Yxr}}, |
| } |
| |
| var yxm = []ytab{ |
| {Zm_r_xm, 1, argList{Yxm, Yxr}}, |
| } |
| |
| var yxm_q4 = []ytab{ |
| {Zm_r, 1, argList{Yxm, Yxr}}, |
| } |
| |
| var yxcvm1 = []ytab{ |
| {Zm_r_xm, 2, argList{Yxm, Yxr}}, |
| {Zm_r_xm, 2, argList{Yxm, Ymr}}, |
| } |
| |
| var yxcvm2 = []ytab{ |
| {Zm_r_xm, 2, argList{Yxm, Yxr}}, |
| {Zm_r_xm, 2, argList{Ymm, Yxr}}, |
| } |
| |
| var yxr = []ytab{ |
| {Zm_r_xm, 1, argList{Yxr, Yxr}}, |
| } |
| |
| var yxr_ml = []ytab{ |
| {Zr_m_xm, 1, argList{Yxr, Yml}}, |
| } |
| |
| var ymr = []ytab{ |
| {Zm_r, 1, argList{Ymr, Ymr}}, |
| } |
| |
| var ymr_ml = []ytab{ |
| {Zr_m_xm, 1, argList{Ymr, Yml}}, |
| } |
| |
| var yxcmpi = []ytab{ |
| {Zm_r_i_xm, 2, argList{Yxm, Yxr, Yi8}}, |
| } |
| |
| var yxmov = []ytab{ |
| {Zm_r_xm, 1, argList{Yxm, Yxr}}, |
| {Zr_m_xm, 1, argList{Yxr, Yxm}}, |
| } |
| |
| var yxcvfl = []ytab{ |
| {Zm_r_xm, 1, argList{Yxm, Yrl}}, |
| } |
| |
| var yxcvlf = []ytab{ |
| {Zm_r_xm, 1, argList{Yml, Yxr}}, |
| } |
| |
| var yxcvfq = []ytab{ |
| {Zm_r_xm, 2, argList{Yxm, Yrl}}, |
| } |
| |
| var yxcvqf = []ytab{ |
| {Zm_r_xm, 2, argList{Yml, Yxr}}, |
| } |
| |
| var yps = []ytab{ |
| {Zm_r_xm, 1, argList{Ymm, Ymr}}, |
| {Zibo_m_xm, 2, argList{Yi8, Ymr}}, |
| {Zm_r_xm, 2, argList{Yxm, Yxr}}, |
| {Zibo_m_xm, 3, argList{Yi8, Yxr}}, |
| } |
| |
| var yxrrl = []ytab{ |
| {Zm_r, 1, argList{Yxr, Yrl}}, |
| } |
| |
| var ymrxr = []ytab{ |
| {Zm_r, 1, argList{Ymr, Yxr}}, |
| {Zm_r_xm, 1, argList{Yxm, Yxr}}, |
| } |
| |
| var ymshuf = []ytab{ |
| {Zibm_r, 2, argList{Yi8, Ymm, Ymr}}, |
| } |
| |
| var ymshufb = []ytab{ |
| {Zm2_r, 2, argList{Yxm, Yxr}}, |
| } |
| |
| // It should never have more than 1 entry, |
| // because some optab entries you opcode secuences that |
| // are longer than 2 bytes (zoffset=2 here), |
| // ROUNDPD and ROUNDPS and recently added BLENDPD, |
| // to name a few. |
| var yxshuf = []ytab{ |
| {Zibm_r, 2, argList{Yu8, Yxm, Yxr}}, |
| } |
| |
| var yextrw = []ytab{ |
| {Zibm_r, 2, argList{Yu8, Yxr, Yrl}}, |
| {Zibr_m, 2, argList{Yu8, Yxr, Yml}}, |
| } |
| |
| var yextr = []ytab{ |
| {Zibr_m, 3, argList{Yu8, Yxr, Ymm}}, |
| } |
| |
| var yinsrw = []ytab{ |
| {Zibm_r, 2, argList{Yu8, Yml, Yxr}}, |
| } |
| |
| var yinsr = []ytab{ |
| {Zibm_r, 3, argList{Yu8, Ymm, Yxr}}, |
| } |
| |
| var ypsdq = []ytab{ |
| {Zibo_m, 2, argList{Yi8, Yxr}}, |
| } |
| |
| var ymskb = []ytab{ |
| {Zm_r_xm, 2, argList{Yxr, Yrl}}, |
| {Zm_r_xm, 1, argList{Ymr, Yrl}}, |
| } |
| |
| var ycrc32l = []ytab{ |
| {Zlitm_r, 0, argList{Yml, Yrl}}, |
| } |
| |
| var ycrc32b = []ytab{ |
| {Zlitm_r, 0, argList{Ymb, Yrl}}, |
| } |
| |
| var yprefetch = []ytab{ |
| {Zm_o, 2, argList{Ym}}, |
| } |
| |
| var yaes = []ytab{ |
| {Zlitm_r, 2, argList{Yxm, Yxr}}, |
| } |
| |
| var yxbegin = []ytab{ |
| {Zjmp, 1, argList{Ybr}}, |
| } |
| |
| var yxabort = []ytab{ |
| {Zib_, 1, argList{Yu8}}, |
| } |
| |
| var ylddqu = []ytab{ |
| {Zm_r, 1, argList{Ym, Yxr}}, |
| } |
| |
| var ypalignr = []ytab{ |
| {Zibm_r, 2, argList{Yu8, Yxm, Yxr}}, |
| } |
| |
| var ysha256rnds2 = []ytab{ |
| {Zlit_m_r, 0, argList{Yxr0, Yxm, Yxr}}, |
| } |
| |
| var yblendvpd = []ytab{ |
| {Z_m_r, 1, argList{Yxr0, Yxm, Yxr}}, |
| } |
| |
| var ymmxmm0f38 = []ytab{ |
| {Zlitm_r, 3, argList{Ymm, Ymr}}, |
| {Zlitm_r, 5, argList{Yxm, Yxr}}, |
| } |
| |
| var yextractps = []ytab{ |
| {Zibr_m, 2, argList{Yu2, Yxr, Yml}}, |
| } |
| |
| var ysha1rnds4 = []ytab{ |
| {Zibm_r, 2, argList{Yu2, Yxm, Yxr}}, |
| } |
| |
| // You are doasm, holding in your hand a *obj.Prog with p.As set to, say, |
| // ACRC32, and p.From and p.To as operands (obj.Addr). The linker scans optab |
| // to find the entry with the given p.As and then looks through the ytable for |
| // that instruction (the second field in the optab struct) for a line whose |
| // first two values match the Ytypes of the p.From and p.To operands. The |
| // function oclass computes the specific Ytype of an operand and then the set |
| // of more general Ytypes that it satisfies is implied by the ycover table, set |
| // up in instinit. For example, oclass distinguishes the constants 0 and 1 |
| // from the more general 8-bit constants, but instinit says |
| // |
| // ycover[Yi0*Ymax+Ys32] = 1 |
| // ycover[Yi1*Ymax+Ys32] = 1 |
| // ycover[Yi8*Ymax+Ys32] = 1 |
| // |
| // which means that Yi0, Yi1, and Yi8 all count as Ys32 (signed 32) |
| // if that's what an instruction can handle. |
| // |
| // In parallel with the scan through the ytable for the appropriate line, there |
| // is a z pointer that starts out pointing at the strange magic byte list in |
| // the Optab struct. With each step past a non-matching ytable line, z |
| // advances by the 4th entry in the line. When a matching line is found, that |
| // z pointer has the extra data to use in laying down the instruction bytes. |
| // The actual bytes laid down are a function of the 3rd entry in the line (that |
| // is, the Ztype) and the z bytes. |
| // |
| // For example, let's look at AADDL. The optab line says: |
| // {AADDL, yaddl, Px, opBytes{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}}, |
| // |
| // and yaddl says |
| // var yaddl = []ytab{ |
| // {Yi8, Ynone, Yml, Zibo_m, 2}, |
| // {Yi32, Ynone, Yax, Zil_, 1}, |
| // {Yi32, Ynone, Yml, Zilo_m, 2}, |
| // {Yrl, Ynone, Yml, Zr_m, 1}, |
| // {Yml, Ynone, Yrl, Zm_r, 1}, |
| // } |
| // |
| // so there are 5 possible types of ADDL instruction that can be laid down, and |
| // possible states used to lay them down (Ztype and z pointer, assuming z |
| // points at opBytes{0x83, 00, 0x05,0x81, 00, 0x01, 0x03}) are: |
| // |
| // Yi8, Yml -> Zibo_m, z (0x83, 00) |
| // Yi32, Yax -> Zil_, z+2 (0x05) |
| // Yi32, Yml -> Zilo_m, z+2+1 (0x81, 0x00) |
| // Yrl, Yml -> Zr_m, z+2+1+2 (0x01) |
| // Yml, Yrl -> Zm_r, z+2+1+2+1 (0x03) |
| // |
| // The Pconstant in the optab line controls the prefix bytes to emit. That's |
| // relatively straightforward as this program goes. |
| // |
| // The switch on yt.zcase in doasm implements the various Z cases. Zibo_m, for |
| // example, is an opcode byte (z[0]) then an asmando (which is some kind of |
| // encoded addressing mode for the Yml arg), and then a single immediate byte. |
| // Zilo_m is the same but a long (32-bit) immediate. |
| var optab = |
| // as, ytab, andproto, opcode |
| [...]Optab{ |
| {obj.AXXX, nil, 0, opBytes{}}, |
| {AAAA, ynone, P32, opBytes{0x37}}, |
| {AAAD, ynone, P32, opBytes{0xd5, 0x0a}}, |
| {AAAM, ynone, P32, opBytes{0xd4, 0x0a}}, |
| {AAAS, ynone, P32, opBytes{0x3f}}, |
| {AADCB, yxorb, Pb, opBytes{0x14, 0x80, 02, 0x10, 0x12}}, |
| {AADCL, yaddl, Px, opBytes{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}}, |
| {AADCQ, yaddl, Pw, opBytes{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}}, |
| {AADCW, yaddl, Pe, opBytes{0x83, 02, 0x15, 0x81, 02, 0x11, 0x13}}, |
| {AADCXL, yml_rl, Pq4, opBytes{0xf6}}, |
| {AADCXQ, yml_rl, Pq4w, opBytes{0xf6}}, |
| {AADDB, yxorb, Pb, opBytes{0x04, 0x80, 00, 0x00, 0x02}}, |
| {AADDL, yaddl, Px, opBytes{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}}, |
| {AADDPD, yxm, Pq, opBytes{0x58}}, |
| {AADDPS, yxm, Pm, opBytes{0x58}}, |
| {AADDQ, yaddl, Pw, opBytes{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}}, |
| {AADDSD, yxm, Pf2, opBytes{0x58}}, |
| {AADDSS, yxm, Pf3, opBytes{0x58}}, |
| {AADDSUBPD, yxm, Pq, opBytes{0xd0}}, |
| {AADDSUBPS, yxm, Pf2, opBytes{0xd0}}, |
| {AADDW, yaddl, Pe, opBytes{0x83, 00, 0x05, 0x81, 00, 0x01, 0x03}}, |
| {AADOXL, yml_rl, Pq5, opBytes{0xf6}}, |
| {AADOXQ, yml_rl, Pq5w, opBytes{0xf6}}, |
| {AADJSP, nil, 0, opBytes{}}, |
| {AANDB, yxorb, Pb, opBytes{0x24, 0x80, 04, 0x20, 0x22}}, |
| {AANDL, yaddl, Px, opBytes{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}}, |
| {AANDNPD, yxm, Pq, opBytes{0x55}}, |
| {AANDNPS, yxm, Pm, opBytes{0x55}}, |
| {AANDPD, yxm, Pq, opBytes{0x54}}, |
| {AANDPS, yxm, Pm, opBytes{0x54}}, |
| {AANDQ, yaddl, Pw, opBytes{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}}, |
| {AANDW, yaddl, Pe, opBytes{0x83, 04, 0x25, 0x81, 04, 0x21, 0x23}}, |
| {AARPL, yrl_ml, P32, opBytes{0x63}}, |
| {ABOUNDL, yrl_m, P32, opBytes{0x62}}, |
| {ABOUNDW, yrl_m, Pe, opBytes{0x62}}, |
| {ABSFL, yml_rl, Pm, opBytes{0xbc}}, |
| {ABSFQ, yml_rl, Pw, opBytes{0x0f, 0xbc}}, |
| {ABSFW, yml_rl, Pq, opBytes{0xbc}}, |
| {ABSRL, yml_rl, Pm, opBytes{0xbd}}, |
| {ABSRQ, yml_rl, Pw, opBytes{0x0f, 0xbd}}, |
| {ABSRW, yml_rl, Pq, opBytes{0xbd}}, |
| {ABSWAPL, ybswap, Px, opBytes{0x0f, 0xc8}}, |
| {ABSWAPQ, ybswap, Pw, opBytes{0x0f, 0xc8}}, |
| {ABTCL, ybtl, Pm, opBytes{0xba, 07, 0xbb}}, |
| {ABTCQ, ybtl, Pw, opBytes{0x0f, 0xba, 07, 0x0f, 0xbb}}, |
| {ABTCW, ybtl, Pq, opBytes{0xba, 07, 0xbb}}, |
| {ABTL, ybtl, Pm, opBytes{0xba, 04, 0xa3}}, |
| {ABTQ, ybtl, Pw, opBytes{0x0f, 0xba, 04, 0x0f, 0xa3}}, |
| {ABTRL, ybtl, Pm, opBytes{0xba, 06, 0xb3}}, |
| {ABTRQ, ybtl, Pw, opBytes{0x0f, 0xba, 06, 0x0f, 0xb3}}, |
| {ABTRW, ybtl, Pq, opBytes{0xba, 06, 0xb3}}, |
| {ABTSL, ybtl, Pm, opBytes{0xba, 05, 0xab}}, |
| {ABTSQ, ybtl, Pw, opBytes{0x0f, 0xba, 05, 0x0f, 0xab}}, |
| {ABTSW, ybtl, Pq, opBytes{0xba, 05, 0xab}}, |
| {ABTW, ybtl, Pq, opBytes{0xba, 04, 0xa3}}, |
| {ABYTE, ybyte, Px, opBytes{1}}, |
| {obj.ACALL, ycall, Px, opBytes{0xff, 02, 0xff, 0x15, 0xe8}}, |
| {ACBW, ynone, Pe, opBytes{0x98}}, |
| {ACDQ, ynone, Px, opBytes{0x99}}, |
| {ACDQE, ynone, Pw, opBytes{0x98}}, |
| {ACLAC, ynone, Pm, opBytes{01, 0xca}}, |
| {ACLC, ynone, Px, opBytes{0xf8}}, |
| {ACLD, ynone, Px, opBytes{0xfc}}, |
| {ACLDEMOTE, yclflush, Pm, opBytes{0x1c, 00}}, |
| {ACLFLUSH, yclflush, Pm, opBytes{0xae, 07}}, |
| {ACLFLUSHOPT, yclflush, Pq, opBytes{0xae, 07}}, |
| {ACLI, ynone, Px, opBytes{0xfa}}, |
| {ACLTS, ynone, Pm, opBytes{0x06}}, |
| {ACLWB, yclflush, Pq, opBytes{0xae, 06}}, |
| {ACMC, ynone, Px, opBytes{0xf5}}, |
| {ACMOVLCC, yml_rl, Pm, opBytes{0x43}}, |
| {ACMOVLCS, yml_rl, Pm, opBytes{0x42}}, |
| {ACMOVLEQ, yml_rl, Pm, opBytes{0x44}}, |
| {ACMOVLGE, yml_rl, Pm, opBytes{0x4d}}, |
| {ACMOVLGT, yml_rl, Pm, opBytes{0x4f}}, |
| {ACMOVLHI, yml_rl, Pm, opBytes{0x47}}, |
| {ACMOVLLE, yml_rl, Pm, opBytes{0x4e}}, |
| {ACMOVLLS, yml_rl, Pm, opBytes{0x46}}, |
| {ACMOVLLT, yml_rl, Pm, opBytes{0x4c}}, |
| {ACMOVLMI, yml_rl, Pm, opBytes{0x48}}, |
| {ACMOVLNE, yml_rl, Pm, opBytes{0x45}}, |
| {ACMOVLOC, yml_rl, Pm, opBytes{0x41}}, |
| {ACMOVLOS, yml_rl, Pm, opBytes{0x40}}, |
| {ACMOVLPC, yml_rl, Pm, opBytes{0x4b}}, |
| {ACMOVLPL, yml_rl, Pm, opBytes{0x49}}, |
| {ACMOVLPS, yml_rl, Pm, opBytes{0x4a}}, |
| {ACMOVQCC, yml_rl, Pw, opBytes{0x0f, 0x43}}, |
| {ACMOVQCS, yml_rl, Pw, opBytes{0x0f, 0x42}}, |
| {ACMOVQEQ, yml_rl, Pw, opBytes{0x0f, 0x44}}, |
| {ACMOVQGE, yml_rl, Pw, opBytes{0x0f, 0x4d}}, |
| {ACMOVQGT, yml_rl, Pw, opBytes{0x0f, 0x4f}}, |
| {ACMOVQHI, yml_rl, Pw, opBytes{0x0f, 0x47}}, |
| {ACMOVQLE, yml_rl, Pw, opBytes{0x0f, 0x4e}}, |
| {ACMOVQLS, yml_rl, Pw, opBytes{0x0f, 0x46}}, |
| {ACMOVQLT, yml_rl, Pw, opBytes{0x0f, 0x4c}}, |
| {ACMOVQMI, yml_rl, Pw, opBytes{0x0f, 0x48}}, |
| {ACMOVQNE, yml_rl, Pw, opBytes{0x0f, 0x45}}, |
| {ACMOVQOC, yml_rl, Pw, opBytes{0x0f, 0x41}}, |
| {ACMOVQOS, yml_rl, Pw, opBytes{0x0f, 0x40}}, |
| {ACMOVQPC, yml_rl, Pw, opBytes{0x0f, 0x4b}}, |
| {ACMOVQPL, yml_rl, Pw, opBytes{0x0f, 0x49}}, |
| {ACMOVQPS, yml_rl, Pw, opBytes{0x0f, 0x4a}}, |
| {ACMOVWCC, yml_rl, Pq, opBytes{0x43}}, |
| {ACMOVWCS, yml_rl, Pq, opBytes{0x42}}, |
| {ACMOVWEQ, yml_rl, Pq, opBytes{0x44}}, |
| {ACMOVWGE, yml_rl, Pq, opBytes{0x4d}}, |
| {ACMOVWGT, yml_rl, Pq, opBytes{0x4f}}, |
| {ACMOVWHI, yml_rl, Pq, opBytes{0x47}}, |
| {ACMOVWLE, yml_rl, Pq, opBytes{0x4e}}, |
| {ACMOVWLS, yml_rl, Pq, opBytes{0x46}}, |
| {ACMOVWLT, yml_rl, Pq, opBytes{0x4c}}, |
| {ACMOVWMI, yml_rl, Pq, opBytes{0x48}}, |
| {ACMOVWNE, yml_rl, Pq, opBytes{0x45}}, |
| {ACMOVWOC, yml_rl, Pq, opBytes{0x41}}, |
| {ACMOVWOS, yml_rl, Pq, opBytes{0x40}}, |
| {ACMOVWPC, yml_rl, Pq, opBytes{0x4b}}, |
| {ACMOVWPL, yml_rl, Pq, opBytes{0x49}}, |
| {ACMOVWPS, yml_rl, Pq, opBytes{0x4a}}, |
| {ACMPB, ycmpb, Pb, opBytes{0x3c, 0x80, 07, 0x38, 0x3a}}, |
| {ACMPL, ycmpl, Px, opBytes{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}}, |
| {ACMPPD, yxcmpi, Px, opBytes{Pe, 0xc2}}, |
| {ACMPPS, yxcmpi, Pm, opBytes{0xc2, 0}}, |
| {ACMPQ, ycmpl, Pw, opBytes{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}}, |
| {ACMPSB, ynone, Pb, opBytes{0xa6}}, |
| {ACMPSD, yxcmpi, Px, opBytes{Pf2, 0xc2}}, |
| {ACMPSL, ynone, Px, opBytes{0xa7}}, |
| {ACMPSQ, ynone, Pw, opBytes{0xa7}}, |
| {ACMPSS, yxcmpi, Px, opBytes{Pf3, 0xc2}}, |
| {ACMPSW, ynone, Pe, opBytes{0xa7}}, |
| {ACMPW, ycmpl, Pe, opBytes{0x83, 07, 0x3d, 0x81, 07, 0x39, 0x3b}}, |
| {ACOMISD, yxm, Pe, opBytes{0x2f}}, |
| {ACOMISS, yxm, Pm, opBytes{0x2f}}, |
| {ACPUID, ynone, Pm, opBytes{0xa2}}, |
| {ACVTPL2PD, yxcvm2, Px, opBytes{Pf3, 0xe6, Pe, 0x2a}}, |
| {ACVTPL2PS, yxcvm2, Pm, opBytes{0x5b, 0, 0x2a, 0}}, |
| {ACVTPD2PL, yxcvm1, Px, opBytes{Pf2, 0xe6, Pe, 0x2d}}, |
| {ACVTPD2PS, yxm, Pe, opBytes{0x5a}}, |
| {ACVTPS2PL, yxcvm1, Px, opBytes{Pe, 0x5b, Pm, 0x2d}}, |
| {ACVTPS2PD, yxm, Pm, opBytes{0x5a}}, |
| {ACVTSD2SL, yxcvfl, Pf2, opBytes{0x2d}}, |
| {ACVTSD2SQ, yxcvfq, Pw, opBytes{Pf2, 0x2d}}, |
| {ACVTSD2SS, yxm, Pf2, opBytes{0x5a}}, |
| {ACVTSL2SD, yxcvlf, Pf2, opBytes{0x2a}}, |
| {ACVTSQ2SD, yxcvqf, Pw, opBytes{Pf2, 0x2a}}, |
| {ACVTSL2SS, yxcvlf, Pf3, opBytes{0x2a}}, |
| {ACVTSQ2SS, yxcvqf, Pw, opBytes{Pf3, 0x2a}}, |
| {ACVTSS2SD, yxm, Pf3, opBytes{0x5a}}, |
| {ACVTSS2SL, yxcvfl, Pf3, opBytes{0x2d}}, |
| {ACVTSS2SQ, yxcvfq, Pw, opBytes{Pf3, 0x2d}}, |
| {ACVTTPD2PL, yxcvm1, Px, opBytes{Pe, 0xe6, Pe, 0x2c}}, |
| {ACVTTPS2PL, yxcvm1, Px, opBytes{Pf3, 0x5b, Pm, 0x2c}}, |
| {ACVTTSD2SL, yxcvfl, Pf2, opBytes{0x2c}}, |
| {ACVTTSD2SQ, yxcvfq, Pw, opBytes{Pf2, 0x2c}}, |
| {ACVTTSS2SL, yxcvfl, Pf3, opBytes{0x2c}}, |
| {ACVTTSS2SQ, yxcvfq, Pw, opBytes{Pf3, 0x2c}}, |
| {ACWD, ynone, Pe, opBytes{0x99}}, |
| {ACWDE, ynone, Px, opBytes{0x98}}, |
| {ACQO, ynone, Pw, opBytes{0x99}}, |
| {ADAA, ynone, P32, opBytes{0x27}}, |
| {ADAS, ynone, P32, opBytes{0x2f}}, |
| {ADECB, yscond, Pb, opBytes{0xfe, 01}}, |
| {ADECL, yincl, Px1, opBytes{0x48, 0xff, 01}}, |
| {ADECQ, yincq, Pw, opBytes{0xff, 01}}, |
| {ADECW, yincq, Pe, opBytes{0xff, 01}}, |
| {ADIVB, ydivb, Pb, opBytes{0xf6, 06}}, |
| {ADIVL, ydivl, Px, opBytes{0xf7, 06}}, |
| {ADIVPD, yxm, Pe, opBytes{0x5e}}, |
| {ADIVPS, yxm, Pm, opBytes{0x5e}}, |
| {ADIVQ, ydivl, Pw, opBytes{0xf7, 06}}, |
| {ADIVSD, yxm, Pf2, opBytes{0x5e}}, |
| {ADIVSS, yxm, Pf3, opBytes{0x5e}}, |
| {ADIVW, ydivl, Pe, opBytes{0xf7, 06}}, |
| {ADPPD, yxshuf, Pq, opBytes{0x3a, 0x41, 0}}, |
| {ADPPS, yxshuf, Pq, opBytes{0x3a, 0x40, 0}}, |
| {AEMMS, ynone, Pm, opBytes{0x77}}, |
| {AEXTRACTPS, yextractps, Pq, opBytes{0x3a, 0x17, 0}}, |
| {AENTER, nil, 0, opBytes{}}, // botch |
| {AFXRSTOR, ysvrs_mo, Pm, opBytes{0xae, 01, 0xae, 01}}, |
| {AFXSAVE, ysvrs_om, Pm, opBytes{0xae, 00, 0xae, 00}}, |
| {AFXRSTOR64, ysvrs_mo, Pw, opBytes{0x0f, 0xae, 01, 0x0f, 0xae, 01}}, |
| {AFXSAVE64, ysvrs_om, Pw, opBytes{0x0f, 0xae, 00, 0x0f, 0xae, 00}}, |
| {AHLT, ynone, Px, opBytes{0xf4}}, |
| {AIDIVB, ydivb, Pb, opBytes{0xf6, 07}}, |
| {AIDIVL, ydivl, Px, opBytes{0xf7, 07}}, |
| {AIDIVQ, ydivl, Pw, opBytes{0xf7, 07}}, |
| {AIDIVW, ydivl, Pe, opBytes{0xf7, 07}}, |
| {AIMULB, ydivb, Pb, opBytes{0xf6, 05}}, |
| {AIMULL, yimul, Px, opBytes{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}}, |
| {AIMULQ, yimul, Pw, opBytes{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}}, |
| {AIMULW, yimul, Pe, opBytes{0xf7, 05, 0x6b, 0x69, Pm, 0xaf}}, |
| {AIMUL3W, yimul3, Pe, opBytes{0x6b, 00, 0x69, 00}}, |
| {AIMUL3L, yimul3, Px, opBytes{0x6b, 00, 0x69, 00}}, |
| {AIMUL3Q, yimul3, Pw, opBytes{0x6b, 00, 0x69, 00}}, |
| {AINB, yin, Pb, opBytes{0xe4, 0xec}}, |
| {AINW, yin, Pe, opBytes{0xe5, 0xed}}, |
| {AINL, yin, Px, opBytes{0xe5, 0xed}}, |
| {AINCB, yscond, Pb, opBytes{0xfe, 00}}, |
| {AINCL, yincl, Px1, opBytes{0x40, 0xff, 00}}, |
| {AINCQ, yincq, Pw, opBytes{0xff, 00}}, |
| {AINCW, yincq, Pe, opBytes{0xff, 00}}, |
| {AINSB, ynone, Pb, opBytes{0x6c}}, |
| {AINSL, ynone, Px, opBytes{0x6d}}, |
| {AINSERTPS, yxshuf, Pq, opBytes{0x3a, 0x21, 0}}, |
| {AINSW, ynone, Pe, opBytes{0x6d}}, |
| {AICEBP, ynone, Px, opBytes{0xf1}}, |
| {AINT, yint, Px, opBytes{0xcd}}, |
| {AINTO, ynone, P32, opBytes{0xce}}, |
| {AIRETL, ynone, Px, opBytes{0xcf}}, |
| {AIRETQ, ynone, Pw, opBytes{0xcf}}, |
| {AIRETW, ynone, Pe, opBytes{0xcf}}, |
| {AJCC, yjcond, Px, opBytes{0x73, 0x83, 00}}, |
| {AJCS, yjcond, Px, opBytes{0x72, 0x82}}, |
| {AJCXZL, yloop, Px, opBytes{0xe3}}, |
| {AJCXZW, yloop, Px, opBytes{0xe3}}, |
| {AJCXZQ, yloop, Px, opBytes{0xe3}}, |
| {AJEQ, yjcond, Px, opBytes{0x74, 0x84}}, |
| {AJGE, yjcond, Px, opBytes{0x7d, 0x8d}}, |
| {AJGT, yjcond, Px, opBytes{0x7f, 0x8f}}, |
| {AJHI, yjcond, Px, opBytes{0x77, 0x87}}, |
| {AJLE, yjcond, Px, opBytes{0x7e, 0x8e}}, |
| {AJLS, yjcond, Px, opBytes{0x76, 0x86}}, |
| {AJLT, yjcond, Px, opBytes{0x7c, 0x8c}}, |
| {AJMI, yjcond, Px, opBytes{0x78, 0x88}}, |
| {obj.AJMP, yjmp, Px, opBytes{0xff, 04, 0xeb, 0xe9}}, |
| {AJNE, yjcond, Px, opBytes{0x75, 0x85}}, |
| {AJOC, yjcond, Px, opBytes{0x71, 0x81, 00}}, |
| {AJOS, yjcond, Px, opBytes{0x70, 0x80, 00}}, |
| {AJPC, yjcond, Px, opBytes{0x7b, 0x8b}}, |
| {AJPL, yjcond, Px, opBytes{0x79, 0x89}}, |
| {AJPS, yjcond, Px, opBytes{0x7a, 0x8a}}, |
| {AHADDPD, yxm, Pq, opBytes{0x7c}}, |
| {AHADDPS, yxm, Pf2, opBytes{0x7c}}, |
| {AHSUBPD, yxm, Pq, opBytes{0x7d}}, |
| {AHSUBPS, yxm, Pf2, opBytes{0x7d}}, |
| {ALAHF, ynone, Px, opBytes{0x9f}}, |
| {ALARL, yml_rl, Pm, opBytes{0x02}}, |
| {ALARQ, yml_rl, Pw, opBytes{0x0f, 0x02}}, |
| {ALARW, yml_rl, Pq, opBytes{0x02}}, |
| {ALDDQU, ylddqu, Pf2, opBytes{0xf0}}, |
| {ALDMXCSR, ysvrs_mo, Pm, opBytes{0xae, 02, 0xae, 02}}, |
| {ALEAL, ym_rl, Px, opBytes{0x8d}}, |
| {ALEAQ, ym_rl, Pw, opBytes{0x8d}}, |
| {ALEAVEL, ynone, P32, opBytes{0xc9}}, |
| {ALEAVEQ, ynone, Py, opBytes{0xc9}}, |
| {ALEAVEW, ynone, Pe, opBytes{0xc9}}, |
| {ALEAW, ym_rl, Pe, opBytes{0x8d}}, |
| {ALOCK, ynone, Px, opBytes{0xf0}}, |
| {ALODSB, ynone, Pb, opBytes{0xac}}, |
| {ALODSL, ynone, Px, opBytes{0xad}}, |
| {ALODSQ, ynone, Pw, opBytes{0xad}}, |
| {ALODSW, ynone, Pe, opBytes{0xad}}, |
| {ALONG, ybyte, Px, opBytes{4}}, |
| {ALOOP, yloop, Px, opBytes{0xe2}}, |
| {ALOOPEQ, yloop, Px, opBytes{0xe1}}, |
| {ALOOPNE, yloop, Px, opBytes{0xe0}}, |
| {ALTR, ydivl, Pm, opBytes{0x00, 03}}, |
| {ALZCNTL, yml_rl, Pf3, opBytes{0xbd}}, |
| {ALZCNTQ, yml_rl, Pfw, opBytes{0xbd}}, |
| {ALZCNTW, yml_rl, Pef3, opBytes{0xbd}}, |
| {ALSLL, yml_rl, Pm, opBytes{0x03}}, |
| {ALSLW, yml_rl, Pq, opBytes{0x03}}, |
| {ALSLQ, yml_rl, Pw, opBytes{0x0f, 0x03}}, |
| {AMASKMOVOU, yxr, Pe, opBytes{0xf7}}, |
| {AMASKMOVQ, ymr, Pm, opBytes{0xf7}}, |
| {AMAXPD, yxm, Pe, opBytes{0x5f}}, |
| {AMAXPS, yxm, Pm, opBytes{0x5f}}, |
| {AMAXSD, yxm, Pf2, opBytes{0x5f}}, |
| {AMAXSS, yxm, Pf3, opBytes{0x5f}}, |
| {AMINPD, yxm, Pe, opBytes{0x5d}}, |
| {AMINPS, yxm, Pm, opBytes{0x5d}}, |
| {AMINSD, yxm, Pf2, opBytes{0x5d}}, |
| {AMINSS, yxm, Pf3, opBytes{0x5d}}, |
| {AMONITOR, ynone, Px, opBytes{0x0f, 0x01, 0xc8, 0}}, |
| {AMWAIT, ynone, Px, opBytes{0x0f, 0x01, 0xc9, 0}}, |
| {AMOVAPD, yxmov, Pe, opBytes{0x28, 0x29}}, |
| {AMOVAPS, yxmov, Pm, opBytes{0x28, 0x29}}, |
| {AMOVB, ymovb, Pb, opBytes{0x88, 0x8a, 0xb0, 0xc6, 00}}, |
| {AMOVBLSX, ymb_rl, Pm, opBytes{0xbe}}, |
| {AMOVBLZX, ymb_rl, Pm, opBytes{0xb6}}, |
| {AMOVBQSX, ymb_rl, Pw, opBytes{0x0f, 0xbe}}, |
| {AMOVBQZX, ymb_rl, Pw, opBytes{0x0f, 0xb6}}, |
| {AMOVBWSX, ymb_rl, Pq, opBytes{0xbe}}, |
| {AMOVSWW, ymb_rl, Pe, opBytes{0x0f, 0xbf}}, |
| {AMOVBWZX, ymb_rl, Pq, opBytes{0xb6}}, |
| {AMOVZWW, ymb_rl, Pe, opBytes{0x0f, 0xb7}}, |
| {AMOVO, yxmov, Pe, opBytes{0x6f, 0x7f}}, |
| {AMOVOU, yxmov, Pf3, opBytes{0x6f, 0x7f}}, |
| {AMOVHLPS, yxr, Pm, opBytes{0x12}}, |
| {AMOVHPD, yxmov, Pe, opBytes{0x16, 0x17}}, |
| {AMOVHPS, yxmov, Pm, opBytes{0x16, 0x17}}, |
| {AMOVL, ymovl, Px, opBytes{0x89, 0x8b, 0xb8, 0xc7, 00, 0x6e, 0x7e, Pe, 0x6e, Pe, 0x7e, 0}}, |
| {AMOVLHPS, yxr, Pm, opBytes{0x16}}, |
| {AMOVLPD, yxmov, Pe, opBytes{0x12, 0x13}}, |
| {AMOVLPS, yxmov, Pm, opBytes{0x12, 0x13}}, |
| {AMOVLQSX, yml_rl, Pw, opBytes{0x63}}, |
| {AMOVLQZX, yml_rl, Px, opBytes{0x8b}}, |
| {AMOVMSKPD, yxrrl, Pq, opBytes{0x50}}, |
| {AMOVMSKPS, yxrrl, Pm, opBytes{0x50}}, |
| {AMOVNTO, yxr_ml, Pe, opBytes{0xe7}}, |
| {AMOVNTDQA, ylddqu, Pq4, opBytes{0x2a}}, |
| {AMOVNTPD, yxr_ml, Pe, opBytes{0x2b}}, |
| {AMOVNTPS, yxr_ml, Pm, opBytes{0x2b}}, |
| {AMOVNTQ, ymr_ml, Pm, opBytes{0xe7}}, |
| {AMOVQ, ymovq, Pw8, opBytes{0x6f, 0x7f, Pf2, 0xd6, Pf3, 0x7e, Pe, 0xd6, 0x89, 0x8b, 0xc7, 00, 0xb8, 0xc7, 00, 0x6e, 0x7e, Pe, 0x6e, Pe, 0x7e, 0}}, |
| {AMOVQOZX, ymrxr, Pf3, opBytes{0xd6, 0x7e}}, |
| {AMOVSB, ynone, Pb, opBytes{0xa4}}, |
| {AMOVSD, yxmov, Pf2, opBytes{0x10, 0x11}}, |
| {AMOVSL, ynone, Px, opBytes{0xa5}}, |
| {AMOVSQ, ynone, Pw, opBytes{0xa5}}, |
| {AMOVSS, yxmov, Pf3, opBytes{0x10, 0x11}}, |
| {AMOVSW, ynone, Pe, opBytes{0xa5}}, |
| {AMOVUPD, yxmov, Pe, opBytes{0x10, 0x11}}, |
| {AMOVUPS, yxmov, Pm, opBytes{0x10, 0x11}}, |
| {AMOVW, ymovw, Pe, opBytes{0x89, 0x8b, 0xb8, 0xc7, 00, 0}}, |
| {AMOVWLSX, yml_rl, Pm, opBytes{0xbf}}, |
| {AMOVWLZX, yml_rl, Pm, opBytes{0xb7}}, |
| {AMOVWQSX, yml_rl, Pw, opBytes{0x0f, 0xbf}}, |
| {AMOVWQZX, yml_rl, Pw, opBytes{0x0f, 0xb7}}, |
| {AMPSADBW, yxshuf, Pq, opBytes{0x3a, 0x42, 0}}, |
| {AMULB, ydivb, Pb, opBytes{0xf6, 04}}, |
| {AMULL, ydivl, Px, opBytes{0xf7, 04}}, |
| {AMULPD, yxm, Pe, opBytes{0x59}}, |
| {AMULPS, yxm, Ym, opBytes{0x59}}, |
| {AMULQ, ydivl, Pw, opBytes{0xf7, 04}}, |
| {AMULSD, yxm, Pf2, opBytes{0x59}}, |
| {AMULSS, yxm, Pf3, opBytes{0x59}}, |
| {AMULW, ydivl, Pe, opBytes{0xf7, 04}}, |
| {ANEGB, yscond, Pb, opBytes{0xf6, 03}}, |
| {ANEGL, yscond, Px, opBytes{0xf7, 03}}, |
| {ANEGQ, yscond, Pw, opBytes{0xf7, 03}}, |
| {ANEGW, yscond, Pe, opBytes{0xf7, 03}}, |
| {obj.ANOP, ynop, Px, opBytes{0, 0}}, |
| {ANOTB, yscond, Pb, opBytes{0xf6, 02}}, |
| {ANOTL, yscond, Px, opBytes{0xf7, 02}}, // TODO(rsc): yscond is wrong here. |
| {ANOTQ, yscond, Pw, opBytes{0xf7, 02}}, |
| {ANOTW, yscond, Pe, opBytes{0xf7, 02}}, |
| {AORB, yxorb, Pb, opBytes{0x0c, 0x80, 01, 0x08, 0x0a}}, |
| {AORL, yaddl, Px, opBytes{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}}, |
| {AORPD, yxm, Pq, opBytes{0x56}}, |
| {AORPS, yxm, Pm, opBytes{0x56}}, |
| {AORQ, yaddl, Pw, opBytes{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}}, |
| {AORW, yaddl, Pe, opBytes{0x83, 01, 0x0d, 0x81, 01, 0x09, 0x0b}}, |
| {AOUTB, yin, Pb, opBytes{0xe6, 0xee}}, |
| {AOUTL, yin, Px, opBytes{0xe7, 0xef}}, |
| {AOUTW, yin, Pe, opBytes{0xe7, 0xef}}, |
| {AOUTSB, ynone, Pb, opBytes{0x6e}}, |
| {AOUTSL, ynone, Px, opBytes{0x6f}}, |
| {AOUTSW, ynone, Pe, opBytes{0x6f}}, |
| {APABSB, yxm_q4, Pq4, opBytes{0x1c}}, |
| {APABSD, yxm_q4, Pq4, opBytes{0x1e}}, |
| {APABSW, yxm_q4, Pq4, opBytes{0x1d}}, |
| {APACKSSLW, ymm, Py1, opBytes{0x6b, Pe, 0x6b}}, |
| {APACKSSWB, ymm, Py1, opBytes{0x63, Pe, 0x63}}, |
| {APACKUSDW, yxm_q4, Pq4, opBytes{0x2b}}, |
| {APACKUSWB, ymm, Py1, opBytes{0x67, Pe, 0x67}}, |
| {APADDB, ymm, Py1, opBytes{0xfc, Pe, 0xfc}}, |
| {APADDL, ymm, Py1, opBytes{0xfe, Pe, 0xfe}}, |
| {APADDQ, yxm, Pe, opBytes{0xd4}}, |
| {APADDSB, ymm, Py1, opBytes{0xec, Pe, 0xec}}, |
| {APADDSW, ymm, Py1, opBytes{0xed, Pe, 0xed}}, |
| {APADDUSB, ymm, Py1, opBytes{0xdc, Pe, 0xdc}}, |
| {APADDUSW, ymm, Py1, opBytes{0xdd, Pe, 0xdd}}, |
| {APADDW, ymm, Py1, opBytes{0xfd, Pe, 0xfd}}, |
| {APALIGNR, ypalignr, Pq, opBytes{0x3a, 0x0f}}, |
| {APAND, ymm, Py1, opBytes{0xdb, Pe, 0xdb}}, |
| {APANDN, ymm, Py1, opBytes{0xdf, Pe, 0xdf}}, |
| {APAUSE, ynone, Px, opBytes{0xf3, 0x90}}, |
| {APAVGB, ymm, Py1, opBytes{0xe0, Pe, 0xe0}}, |
| {APAVGW, ymm, Py1, opBytes{0xe3, Pe, 0xe3}}, |
| {APBLENDW, yxshuf, Pq, opBytes{0x3a, 0x0e, 0}}, |
| {APCMPEQB, ymm, Py1, opBytes{0x74, Pe, 0x74}}, |
| {APCMPEQL, ymm, Py1, opBytes{0x76, Pe, 0x76}}, |
| {APCMPEQQ, yxm_q4, Pq4, opBytes{0x29}}, |
| {APCMPEQW, ymm, Py1, opBytes{0x75, Pe, 0x75}}, |
| {APCMPGTB, ymm, Py1, opBytes{0x64, Pe, 0x64}}, |
| {APCMPGTL, ymm, Py1, opBytes{0x66, Pe, 0x66}}, |
| {APCMPGTQ, yxm_q4, Pq4, opBytes{0x37}}, |
| {APCMPGTW, ymm, Py1, opBytes{0x65, Pe, 0x65}}, |
| {APCMPISTRI, yxshuf, Pq, opBytes{0x3a, 0x63, 0}}, |
| {APCMPISTRM, yxshuf, Pq, opBytes{0x3a, 0x62, 0}}, |
| {APEXTRW, yextrw, Pq, opBytes{0xc5, 0, 0x3a, 0x15, 0}}, |
| {APEXTRB, yextr, Pq, opBytes{0x3a, 0x14, 00}}, |
| {APEXTRD, yextr, Pq, opBytes{0x3a, 0x16, 00}}, |
| {APEXTRQ, yextr, Pq3, opBytes{0x3a, 0x16, 00}}, |
| {APHADDD, ymmxmm0f38, Px, opBytes{0x0F, 0x38, 0x02, 0, 0x66, 0x0F, 0x38, 0x02, 0}}, |
| {APHADDSW, yxm_q4, Pq4, opBytes{0x03}}, |
| {APHADDW, yxm_q4, Pq4, opBytes{0x01}}, |
| {APHMINPOSUW, yxm_q4, Pq4, opBytes{0x41}}, |
| {APHSUBD, yxm_q4, Pq4, opBytes{0x06}}, |
| {APHSUBSW, yxm_q4, Pq4, opBytes{0x07}}, |
| {APHSUBW, yxm_q4, Pq4, opBytes{0x05}}, |
| {APINSRW, yinsrw, Pq, opBytes{0xc4, 00}}, |
| {APINSRB, yinsr, Pq, opBytes{0x3a, 0x20, 00}}, |
| {APINSRD, yinsr, Pq, opBytes{0x3a, 0x22, 00}}, |
| {APINSRQ, yinsr, Pq3, opBytes{0x3a, 0x22, 00}}, |
| {APMADDUBSW, yxm_q4, Pq4, opBytes{0x04}}, |
| {APMADDWL, ymm, Py1, opBytes{0xf5, Pe, 0xf5}}, |
| {APMAXSB, yxm_q4, Pq4, opBytes{0x3c}}, |
| {APMAXSD, yxm_q4, Pq4, opBytes{0x3d}}, |
| {APMAXSW, yxm, Pe, opBytes{0xee}}, |
| {APMAXUB, yxm, Pe, opBytes{0xde}}, |
| {APMAXUD, yxm_q4, Pq4, opBytes{0x3f}}, |
| {APMAXUW, yxm_q4, Pq4, opBytes{0x3e}}, |
| {APMINSB, yxm_q4, Pq4, opBytes{0x38}}, |
| {APMINSD, yxm_q4, Pq4, opBytes{0x39}}, |
| {APMINSW, yxm, Pe, opBytes{0xea}}, |
| {APMINUB, yxm, Pe, opBytes{0xda}}, |
| {APMINUD, yxm_q4, Pq4, opBytes{0x3b}}, |
| {APMINUW, yxm_q4, Pq4, opBytes{0x3a}}, |
| {APMOVMSKB, ymskb, Px, opBytes{Pe, 0xd7, 0xd7}}, |
| {APMOVSXBD, yxm_q4, Pq4, opBytes{0x21}}, |
| {APMOVSXBQ, yxm_q4, Pq4, opBytes{0x22}}, |
| {APMOVSXBW, yxm_q4, Pq4, opBytes{0x20}}, |
| {APMOVSXDQ, yxm_q4, Pq4, opBytes{0x25}}, |
| {APMOVSXWD, yxm_q4, Pq4, opBytes{0x23}}, |
| {APMOVSXWQ, yxm_q4, Pq4, opBytes{0x24}}, |
| {APMOVZXBD, yxm_q4, Pq4, opBytes{0x31}}, |
| {APMOVZXBQ, yxm_q4, Pq4, opBytes{0x32}}, |
| {APMOVZXBW, yxm_q4, Pq4, opBytes{0x30}}, |
| {APMOVZXDQ, yxm_q4, Pq4, opBytes{0x35}}, |
| {APMOVZXWD, yxm_q4, Pq4, opBytes{0x33}}, |
| {APMOVZXWQ, yxm_q4, Pq4, opBytes{0x34}}, |
| {APMULDQ, yxm_q4, Pq4, opBytes{0x28}}, |
| {APMULHRSW, yxm_q4, Pq4, opBytes{0x0b}}, |
| {APMULHUW, ymm, Py1, opBytes{0xe4, Pe, 0xe4}}, |
| {APMULHW, ymm, Py1, opBytes{0xe5, Pe, 0xe5}}, |
| {APMULLD, yxm_q4, Pq4, opBytes{0x40}}, |
| {APMULLW, ymm, Py1, opBytes{0xd5, Pe, 0xd5}}, |
| {APMULULQ, ymm, Py1, opBytes{0xf4, Pe, 0xf4}}, |
| {APOPAL, ynone, P32, opBytes{0x61}}, |
| {APOPAW, ynone, Pe, opBytes{0x61}}, |
| {APOPCNTW, yml_rl, Pef3, opBytes{0xb8}}, |
| {APOPCNTL, yml_rl, Pf3, opBytes{0xb8}}, |
| {APOPCNTQ, yml_rl, Pfw, opBytes{0xb8}}, |
| {APOPFL, ynone, P32, opBytes{0x9d}}, |
| {APOPFQ, ynone, Py, opBytes{0x9d}}, |
| {APOPFW, ynone, Pe, opBytes{0x9d}}, |
| {APOPL, ypopl, P32, opBytes{0x58, 0x8f, 00}}, |
| {APOPQ, ypopl, Py, opBytes{0x58, 0x8f, 00}}, |
| {APOPW, ypopl, Pe, opBytes{0x58, 0x8f, 00}}, |
| {APOR, ymm, Py1, opBytes{0xeb, Pe, 0xeb}}, |
| {APSADBW, yxm, Pq, opBytes{0xf6}}, |
| {APSHUFHW, yxshuf, Pf3, opBytes{0x70, 00}}, |
| {APSHUFL, yxshuf, Pq, opBytes{0x70, 00}}, |
| {APSHUFLW, yxshuf, Pf2, opBytes{0x70, 00}}, |
| {APSHUFW, ymshuf, Pm, opBytes{0x70, 00}}, |
| {APSHUFB, ymshufb, Pq, opBytes{0x38, 0x00}}, |
| {APSIGNB, yxm_q4, Pq4, opBytes{0x08}}, |
| {APSIGND, yxm_q4, Pq4, opBytes{0x0a}}, |
| {APSIGNW, yxm_q4, Pq4, opBytes{0x09}}, |
| {APSLLO, ypsdq, Pq, opBytes{0x73, 07}}, |
| {APSLLL, yps, Py3, opBytes{0xf2, 0x72, 06, Pe, 0xf2, Pe, 0x72, 06}}, |
| {APSLLQ, yps, Py3, opBytes{0xf3, 0x73, 06, Pe, 0xf3, Pe, 0x73, 06}}, |
| {APSLLW, yps, Py3, opBytes{0xf1, 0x71, 06, Pe, 0xf1, Pe, 0x71, 06}}, |
| {APSRAL, yps, Py3, opBytes{0xe2, 0x72, 04, Pe, 0xe2, Pe, 0x72, 04}}, |
| {APSRAW, yps, Py3, opBytes{0xe1, 0x71, 04, Pe, 0xe1, Pe, 0x71, 04}}, |
| {APSRLO, ypsdq, Pq, opBytes{0x73, 03}}, |
| {APSRLL, yps, Py3, opBytes{0xd2, 0x72, 02, Pe, 0xd2, Pe, 0x72, 02}}, |
| {APSRLQ, yps, Py3, opBytes{0xd3, 0x73, 02, Pe, 0xd3, Pe, 0x73, 02}}, |
| {APSRLW, yps, Py3, opBytes{0xd1, 0x71, 02, Pe, 0xd1, Pe, 0x71, 02}}, |
| {APSUBB, yxm, Pe, opBytes{0xf8}}, |
| {APSUBL, yxm, Pe, opBytes{0xfa}}, |
| {APSUBQ, yxm, Pe, opBytes{0xfb}}, |
| {APSUBSB, yxm, Pe, opBytes{0xe8}}, |
| {APSUBSW, yxm, Pe, opBytes{0xe9}}, |
| {APSUBUSB, yxm, Pe, opBytes{0xd8}}, |
| {APSUBUSW, yxm, Pe, opBytes{0xd9}}, |
| {APSUBW, yxm, Pe, opBytes{0xf9}}, |
| {APTEST, yxm_q4, Pq4, opBytes{0x17}}, |
| {APUNPCKHBW, ymm, Py1, opBytes{0x68, Pe, 0x68}}, |
| {APUNPCKHLQ, ymm, Py1, opBytes{0x6a, Pe, 0x6a}}, |
| {APUNPCKHQDQ, yxm, Pe, opBytes{0x6d}}, |
| {APUNPCKHWL, ymm, Py1, opBytes{0x69, Pe, 0x69}}, |
| {APUNPCKLBW, ymm, Py1, opBytes{0x60, Pe, 0x60}}, |
| {APUNPCKLLQ, ymm, Py1, opBytes{0x62, Pe, 0x62}}, |
| {APUNPCKLQDQ, yxm, Pe, opBytes{0x6c}}, |
| {APUNPCKLWL, ymm, Py1, opBytes{0x61, Pe, 0x61}}, |
| {APUSHAL, ynone, P32, opBytes{0x60}}, |
| {APUSHAW, ynone, Pe, opBytes{0x60}}, |
| {APUSHFL, ynone, P32, opBytes{0x9c}}, |
| {APUSHFQ, ynone, Py, opBytes{0x9c}}, |
| {APUSHFW, ynone, Pe, opBytes{0x9c}}, |
| {APUSHL, ypushl, P32, opBytes{0x50, 0xff, 06, 0x6a, 0x68}}, |
| {APUSHQ, ypushl, Py, opBytes{0x50, 0xff, 06, 0x6a, 0x68}}, |
| {APUSHW, ypushl, Pe, opBytes{0x50, 0xff, 06, 0x6a, 0x68}}, |
| {APXOR, ymm, Py1, opBytes{0xef, Pe, 0xef}}, |
| {AQUAD, ybyte, Px, opBytes{8}}, |
| {ARCLB, yshb, Pb, opBytes{0xd0, 02, 0xc0, 02, 0xd2, 02}}, |
| {ARCLL, yshl, Px, opBytes{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}}, |
| {ARCLQ, yshl, Pw, opBytes{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}}, |
| {ARCLW, yshl, Pe, opBytes{0xd1, 02, 0xc1, 02, 0xd3, 02, 0xd3, 02}}, |
| {ARCPPS, yxm, Pm, opBytes{0x53}}, |
| {ARCPSS, yxm, Pf3, opBytes{0x53}}, |
| {ARCRB, yshb, Pb, opBytes{0xd0, 03, 0xc0, 03, 0xd2, 03}}, |
| {ARCRL, yshl, Px, opBytes{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}}, |
| {ARCRQ, yshl, Pw, opBytes{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}}, |
| {ARCRW, yshl, Pe, opBytes{0xd1, 03, 0xc1, 03, 0xd3, 03, 0xd3, 03}}, |
| {AREP, ynone, Px, opBytes{0xf3}}, |
| {AREPN, ynone, Px, opBytes{0xf2}}, |
| {obj.ARET, ynone, Px, opBytes{0xc3}}, |
| {ARETFW, yret, Pe, opBytes{0xcb, 0xca}}, |
| {ARETFL, yret, Px, opBytes{0xcb, 0xca}}, |
| {ARETFQ, yret, Pw, opBytes{0xcb, 0xca}}, |
| {AROLB, yshb, Pb, opBytes{0xd0, 00, 0xc0, 00, 0xd2, 00}}, |
| {AROLL, yshl, Px, opBytes{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}}, |
| {AROLQ, yshl, Pw, opBytes{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}}, |
| {AROLW, yshl, Pe, opBytes{0xd1, 00, 0xc1, 00, 0xd3, 00, 0xd3, 00}}, |
| {ARORB, yshb, Pb, opBytes{0xd0, 01, 0xc0, 01, 0xd2, 01}}, |
| {ARORL, yshl, Px, opBytes{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}}, |
| {ARORQ, yshl, Pw, opBytes{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}}, |
| {ARORW, yshl, Pe, opBytes{0xd1, 01, 0xc1, 01, 0xd3, 01, 0xd3, 01}}, |
| {ARSQRTPS, yxm, Pm, opBytes{0x52}}, |
| {ARSQRTSS, yxm, Pf3, opBytes{0x52}}, |
| {ASAHF, ynone, Px, opBytes{0x9e, 00, 0x86, 0xe0, 0x50, 0x9d}}, // XCHGB AH,AL; PUSH AX; POPFL |
| {ASALB, yshb, Pb, opBytes{0xd0, 04, 0xc0, 04, 0xd2, 04}}, |
| {ASALL, yshl, Px, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASALQ, yshl, Pw, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASALW, yshl, Pe, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASARB, yshb, Pb, opBytes{0xd0, 07, 0xc0, 07, 0xd2, 07}}, |
| {ASARL, yshl, Px, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}}, |
| {ASARQ, yshl, Pw, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}}, |
| {ASARW, yshl, Pe, opBytes{0xd1, 07, 0xc1, 07, 0xd3, 07, 0xd3, 07}}, |
| {ASBBB, yxorb, Pb, opBytes{0x1c, 0x80, 03, 0x18, 0x1a}}, |
| {ASBBL, yaddl, Px, opBytes{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}}, |
| {ASBBQ, yaddl, Pw, opBytes{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}}, |
| {ASBBW, yaddl, Pe, opBytes{0x83, 03, 0x1d, 0x81, 03, 0x19, 0x1b}}, |
| {ASCASB, ynone, Pb, opBytes{0xae}}, |
| {ASCASL, ynone, Px, opBytes{0xaf}}, |
| {ASCASQ, ynone, Pw, opBytes{0xaf}}, |
| {ASCASW, ynone, Pe, opBytes{0xaf}}, |
| {ASETCC, yscond, Pb, opBytes{0x0f, 0x93, 00}}, |
| {ASETCS, yscond, Pb, opBytes{0x0f, 0x92, 00}}, |
| {ASETEQ, yscond, Pb, opBytes{0x0f, 0x94, 00}}, |
| {ASETGE, yscond, Pb, opBytes{0x0f, 0x9d, 00}}, |
| {ASETGT, yscond, Pb, opBytes{0x0f, 0x9f, 00}}, |
| {ASETHI, yscond, Pb, opBytes{0x0f, 0x97, 00}}, |
| {ASETLE, yscond, Pb, opBytes{0x0f, 0x9e, 00}}, |
| {ASETLS, yscond, Pb, opBytes{0x0f, 0x96, 00}}, |
| {ASETLT, yscond, Pb, opBytes{0x0f, 0x9c, 00}}, |
| {ASETMI, yscond, Pb, opBytes{0x0f, 0x98, 00}}, |
| {ASETNE, yscond, Pb, opBytes{0x0f, 0x95, 00}}, |
| {ASETOC, yscond, Pb, opBytes{0x0f, 0x91, 00}}, |
| {ASETOS, yscond, Pb, opBytes{0x0f, 0x90, 00}}, |
| {ASETPC, yscond, Pb, opBytes{0x0f, 0x9b, 00}}, |
| {ASETPL, yscond, Pb, opBytes{0x0f, 0x99, 00}}, |
| {ASETPS, yscond, Pb, opBytes{0x0f, 0x9a, 00}}, |
| {ASHLB, yshb, Pb, opBytes{0xd0, 04, 0xc0, 04, 0xd2, 04}}, |
| {ASHLL, yshl, Px, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASHLQ, yshl, Pw, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASHLW, yshl, Pe, opBytes{0xd1, 04, 0xc1, 04, 0xd3, 04, 0xd3, 04}}, |
| {ASHRB, yshb, Pb, opBytes{0xd0, 05, 0xc0, 05, 0xd2, 05}}, |
| {ASHRL, yshl, Px, opBytes{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}}, |
| {ASHRQ, yshl, Pw, opBytes{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}}, |
| {ASHRW, yshl, Pe, opBytes{0xd1, 05, 0xc1, 05, 0xd3, 05, 0xd3, 05}}, |
| {ASHUFPD, yxshuf, Pq, opBytes{0xc6, 00}}, |
| {ASHUFPS, yxshuf, Pm, opBytes{0xc6, 00}}, |
| {ASQRTPD, yxm, Pe, opBytes{0x51}}, |
| {ASQRTPS, yxm, Pm, opBytes{0x51}}, |
| {ASQRTSD, yxm, Pf2, opBytes{0x51}}, |
| {ASQRTSS, yxm, Pf3, opBytes{0x51}}, |
| {ASTC, ynone, Px, opBytes{0xf9}}, |
| {ASTD, ynone, Px, opBytes{0xfd}}, |
| {ASTI, ynone, Px, opBytes{0xfb}}, |
| {ASTMXCSR, ysvrs_om, Pm, opBytes{0xae, 03, 0xae, 03}}, |
| {ASTOSB, ynone, Pb, opBytes{0xaa}}, |
| {ASTOSL, ynone, Px, opBytes{0xab}}, |
| {ASTOSQ, ynone, Pw, opBytes{0xab}}, |
| {ASTOSW, ynone, Pe, opBytes{0xab}}, |
| {ASUBB, yxorb, Pb, opBytes{0x2c, 0x80, 05, 0x28, 0x2a}}, |
| {ASUBL, yaddl, Px, opBytes{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}}, |
| {ASUBPD, yxm, Pe, opBytes{0x5c}}, |
| {ASUBPS, yxm, Pm, opBytes{0x5c}}, |
| {ASUBQ, yaddl, Pw, opBytes{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}}, |
| {ASUBSD, yxm, Pf2, opBytes{0x5c}}, |
| {ASUBSS, yxm, Pf3, opBytes{0x5c}}, |
| {ASUBW, yaddl, Pe, opBytes{0x83, 05, 0x2d, 0x81, 05, 0x29, 0x2b}}, |
| {ASWAPGS, ynone, Pm, opBytes{0x01, 0xf8}}, |
| {ASYSCALL, ynone, Px, opBytes{0x0f, 0x05}}, // fast syscall |
| {ATESTB, yxorb, Pb, opBytes{0xa8, 0xf6, 00, 0x84, 0x84}}, |
| {ATESTL, ytestl, Px, opBytes{0xa9, 0xf7, 00, 0x85, 0x85}}, |
| {ATESTQ, ytestl, Pw, opBytes{0xa9, 0xf7, 00, 0x85, 0x85}}, |
| {ATESTW, ytestl, Pe, opBytes{0xa9, 0xf7, 00, 0x85, 0x85}}, |
| {ATPAUSE, ywrfsbase, Pq, opBytes{0xae, 06}}, |
| {obj.ATEXT, ytext, Px, opBytes{}}, |
| {AUCOMISD, yxm, Pe, opBytes{0x2e}}, |
| {AUCOMISS, yxm, Pm, opBytes{0x2e}}, |
| {AUNPCKHPD, yxm, Pe, opBytes{0x15}}, |
| {AUNPCKHPS, yxm, Pm, opBytes{0x15}}, |
| {AUNPCKLPD, yxm, Pe, opBytes{0x14}}, |
| {AUNPCKLPS, yxm, Pm, opBytes{0x14}}, |
| {AUMONITOR, ywrfsbase, Pf3, opBytes{0xae, 06}}, |
| {AVERR, ydivl, Pm, opBytes{0x00, 04}}, |
| {AVERW, ydivl, Pm, opBytes{0x00, 05}}, |
| {AWAIT, ynone, Px, opBytes{0x9b}}, |
| {AWORD, ybyte, Px, opBytes{2}}, |
| {AXCHGB, yml_mb, Pb, opBytes{0x86, 0x86}}, |
| {AXCHGL, yxchg, Px, opBytes{0x90, 0x90, 0x87, 0x87}}, |
| {AXCHGQ, yxchg, Pw, opBytes{0x90, 0x90, 0x87, 0x87}}, |
| {AXCHGW, yxchg, Pe, opBytes{0x90, 0x90, 0x87, 0x87}}, |
| {AXLAT, ynone, Px, opBytes{0xd7}}, |
| {AXORB, yxorb, Pb, opBytes{0x34, 0x80, 06, 0x30, 0x32}}, |
| {AXORL, yaddl, Px, opBytes{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}}, |
| {AXORPD, yxm, Pe, opBytes{0x57}}, |
| {AXORPS, yxm, Pm, opBytes{0x57}}, |
| {AXORQ, yaddl, Pw, opBytes{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}}, |
| {AXORW, yaddl, Pe, opBytes{0x83, 06, 0x35, 0x81, 06, 0x31, 0x33}}, |
| {AFMOVB, yfmvx, Px, opBytes{0xdf, 04}}, |
| {AFMOVBP, yfmvp, Px, opBytes{0xdf, 06}}, |
| {AFMOVD, yfmvd, Px, opBytes{0xdd, 00, 0xdd, 02, 0xd9, 00, 0xdd, 02}}, |
| {AFMOVDP, yfmvdp, Px, opBytes{0xdd, 03, 0xdd, 03}}, |
| {AFMOVF, yfmvf, Px, opBytes{0xd9, 00, 0xd9, 02}}, |
| {AFMOVFP, yfmvp, Px, opBytes{0xd9, 03}}, |
| {AFMOVL, yfmvf, Px, opBytes{0xdb, 00, 0xdb, 02}}, |
| {AFMOVLP, yfmvp, Px, opBytes{0xdb, 03}}, |
| {AFMOVV, yfmvx, Px, opBytes{0xdf, 05}}, |
| {AFMOVVP, yfmvp, Px, opBytes{0xdf, 07}}, |
| {AFMOVW, yfmvf, Px, opBytes{0xdf, 00, 0xdf, 02}}, |
| {AFMOVWP, yfmvp, Px, opBytes{0xdf, 03}}, |
| {AFMOVX, yfmvx, Px, opBytes{0xdb, 05}}, |
| {AFMOVXP, yfmvp, Px, opBytes{0xdb, 07}}, |
| {AFCMOVCC, yfcmv, Px, opBytes{0xdb, 00}}, |
| {AFCMOVCS, yfcmv, Px, opBytes{0xda, 00}}, |
| {AFCMOVEQ, yfcmv, Px, opBytes{0xda, 01}}, |
| {AFCMOVHI, yfcmv, Px, opBytes{0xdb, 02}}, |
| {AFCMOVLS, yfcmv, Px, opBytes{0xda, 02}}, |
| {AFCMOVB, yfcmv, Px, opBytes{0xda, 00}}, |
| {AFCMOVBE, yfcmv, Px, opBytes{0xda, 02}}, |
| {AFCMOVNB, yfcmv, Px, opBytes{0xdb, 00}}, |
| {AFCMOVNBE, yfcmv, Px, opBytes{0xdb, 02}}, |
| {AFCMOVE, yfcmv, Px, opBytes{0xda, 01}}, |
| {AFCMOVNE, yfcmv, Px, opBytes{0xdb, 01}}, |
| {AFCMOVNU, yfcmv, Px, opBytes{0xdb, 03}}, |
| {AFCMOVU, yfcmv, Px, opBytes{0xda, 03}}, |
| {AFCMOVUN, yfcmv, Px, opBytes{0xda, 03}}, |
| {AFCOMD, yfadd, Px, opBytes{0xdc, 02, 0xd8, 02, 0xdc, 02}}, // botch |
| {AFCOMDP, yfadd, Px, opBytes{0xdc, 03, 0xd8, 03, 0xdc, 03}}, // botch |
| {AFCOMDPP, ycompp, Px, opBytes{0xde, 03}}, |
| {AFCOMF, yfmvx, Px, opBytes{0xd8, 02}}, |
| {AFCOMFP, yfmvx, Px, opBytes{0xd8, 03}}, |
| {AFCOMI, yfcmv, Px, opBytes{0xdb, 06}}, |
| {AFCOMIP, yfcmv, Px, opBytes{0xdf, 06}}, |
| {AFCOML, yfmvx, Px, opBytes{0xda, 02}}, |
| {AFCOMLP, yfmvx, Px, opBytes{0xda, 03}}, |
| {AFCOMW, yfmvx, Px, opBytes{0xde, 02}}, |
| {AFCOMWP, yfmvx, Px, opBytes{0xde, 03}}, |
| {AFUCOM, ycompp, Px, opBytes{0xdd, 04}}, |
| {AFUCOMI, ycompp, Px, opBytes{0xdb, 05}}, |
| {AFUCOMIP, ycompp, Px, opBytes{0xdf, 05}}, |
| {AFUCOMP, ycompp, Px, opBytes{0xdd, 05}}, |
| {AFUCOMPP, ycompp, Px, opBytes{0xda, 13}}, |
| {AFADDDP, ycompp, Px, opBytes{0xde, 00}}, |
| {AFADDW, yfmvx, Px, opBytes{0xde, 00}}, |
| {AFADDL, yfmvx, Px, opBytes{0xda, 00}}, |
| {AFADDF, yfmvx, Px, opBytes{0xd8, 00}}, |
| {AFADDD, yfadd, Px, opBytes{0xdc, 00, 0xd8, 00, 0xdc, 00}}, |
| {AFMULDP, ycompp, Px, opBytes{0xde, 01}}, |
| {AFMULW, yfmvx, Px, opBytes{0xde, 01}}, |
| {AFMULL, yfmvx, Px, opBytes{0xda, 01}}, |
| {AFMULF, yfmvx, Px, opBytes{0xd8, 01}}, |
| {AFMULD, yfadd, Px, opBytes{0xdc, 01, 0xd8, 01, 0xdc, 01}}, |
| {AFSUBDP, ycompp, Px, opBytes{0xde, 05}}, |
| {AFSUBW, yfmvx, Px, opBytes{0xde, 04}}, |
| {AFSUBL, yfmvx, Px, opBytes{0xda, 04}}, |
| {AFSUBF, yfmvx, Px, opBytes{0xd8, 04}}, |
| {AFSUBD, yfadd, Px, opBytes{0xdc, 04, 0xd8, 04, 0xdc, 05}}, |
| {AFSUBRDP, ycompp, Px, opBytes{0xde, 04}}, |
| {AFSUBRW, yfmvx, Px, opBytes{0xde, 05}}, |
| {AFSUBRL, yfmvx, Px, opBytes{0xda, 05}}, |
| {AFSUBRF, yfmvx, Px, opBytes{0xd8, 05}}, |
| {AFSUBRD, yfadd, Px, opBytes{0xdc, 05, 0xd8, 05, 0xdc, 04}}, |
| {AFDIVDP, ycompp, Px, opBytes{0xde, 07}}, |
| {AFDIVW, yfmvx, Px, opBytes{0xde, 06}}, |
| {AFDIVL, yfmvx, Px, opBytes{0xda, 06}}, |
| {AFDIVF, yfmvx, Px, opBytes{0xd8, 06}}, |
| {AFDIVD, yfadd, Px, opBytes{0xdc, 06, 0xd8, 06, 0xdc, 07}}, |
| {AFDIVRDP, ycompp, Px, opBytes{0xde, 06}}, |
| {AFDIVRW, yfmvx, Px, opBytes{0xde, 07}}, |
| {AFDIVRL, yfmvx, Px, opBytes{0xda, 07}}, |
| {AFDIVRF, yfmvx, Px, opBytes{0xd8, 07}}, |
| {AFDIVRD, yfadd, Px, opBytes{0xdc, 07, 0xd8, 07, 0xdc, 06}}, |
| {AFXCHD, yfxch, Px, opBytes{0xd9, 01, 0xd9, 01}}, |
| {AFFREE, nil, 0, opBytes{}}, |
| {AFLDCW, ysvrs_mo, Px, opBytes{0xd9, 05, 0xd9, 05}}, |
| {AFLDENV, ysvrs_mo, Px, opBytes{0xd9, 04, 0xd9, 04}}, |
| {AFRSTOR, ysvrs_mo, Px, opBytes{0xdd, 04, 0xdd, 04}}, |
| {AFSAVE, ysvrs_om, Px, opBytes{0xdd, 06, 0xdd, 06}}, |
| {AFSTCW, ysvrs_om, Px, opBytes{0xd9, 07, 0xd9, 07}}, |
| {AFSTENV, ysvrs_om, Px, opBytes{0xd9, 06, 0xd9, 06}}, |
| {AFSTSW, ystsw, Px, opBytes{0xdd, 07, 0xdf, 0xe0}}, |
| {AF2XM1, ynone, Px, opBytes{0xd9, 0xf0}}, |
| {AFABS, ynone, Px, opBytes{0xd9, 0xe1}}, |
| {AFBLD, ysvrs_mo, Px, opBytes{0xdf, 04}}, |
| {AFBSTP, yclflush, Px, opBytes{0xdf, 06}}, |
| {AFCHS, ynone, Px, opBytes{0xd9, 0xe0}}, |
| {AFCLEX, ynone, Px, opBytes{0xdb, 0xe2}}, |
| {AFCOS, ynone, Px, opBytes{0xd9, 0xff}}, |
| {AFDECSTP, ynone, Px, opBytes{0xd9, 0xf6}}, |
| {AFINCSTP, ynone, Px, opBytes{0xd9, 0xf7}}, |
| {AFINIT, ynone, Px, opBytes{0xdb, 0xe3}}, |
| {AFLD1, ynone, Px, opBytes{0xd9, 0xe8}}, |
| {AFLDL2E, ynone, Px, opBytes{0xd9, 0xea}}, |
| {AFLDL2T, ynone, Px, opBytes{0xd9, 0xe9}}, |
| {AFLDLG2, ynone, Px, opBytes{0xd9, 0xec}}, |
| {AFLDLN2, ynone, Px, opBytes{0xd9, 0xed}}, |
| {AFLDPI, ynone, Px, opBytes{0xd9, 0xeb}}, |
| {AFLDZ, ynone, Px, opBytes{0xd9, 0xee}}, |
| {AFNOP, ynone, Px, opBytes{0xd9, 0xd0}}, |
| {AFPATAN, ynone, Px, opBytes{0xd9, 0xf3}}, |
| {AFPREM, ynone, Px, opBytes{0xd9, 0xf8}}, |
| {AFPREM1, ynone, Px, opBytes{0xd9, 0xf5}}, |
| {AFPTAN, ynone, Px, opBytes{0xd9, 0xf2}}, |
| {AFRNDINT, ynone, Px, opBytes{0xd9, 0xfc}}, |
| {AFSCALE, ynone, Px, opBytes{0xd9, 0xfd}}, |
| {AFSIN, ynone, Px, opBytes{0xd9, 0xfe}}, |
| {AFSINCOS, ynone, Px, opBytes{0xd9, 0xfb}}, |
| {AFSQRT, ynone, Px, opBytes{0xd9, 0xfa}}, |
| {AFTST, ynone, Px, opBytes{0xd9, 0xe4}}, |
| {AFXAM, ynone, Px, opBytes{0xd9, 0xe5}}, |
| {AFXTRACT, ynone, Px, opBytes{0xd9, 0xf4}}, |
| {AFYL2X, ynone, Px, opBytes{0xd9, 0xf1}}, |
| {AFYL2XP1, ynone, Px, opBytes{0xd9, 0xf9}}, |
| {ACMPXCHGB, yrb_mb, Pb, opBytes{0x0f, 0xb0}}, |
| {ACMPXCHGL, yrl_ml, Px, opBytes{0x0f, 0xb1}}, |
| {ACMPXCHGW, yrl_ml, Pe, opBytes{0x0f, 0xb1}}, |
| {ACMPXCHGQ, yrl_ml, Pw, opBytes{0x0f, 0xb1}}, |
| {ACMPXCHG8B, yscond, Pm, opBytes{0xc7, 01}}, |
| {ACMPXCHG16B, yscond, Pw, opBytes{0x0f, 0xc7, 01}}, |
| {AINVD, ynone, Pm, opBytes{0x08}}, |
| {AINVLPG, ydivb, Pm, opBytes{0x01, 07}}, |
| {AINVPCID, ycrc32l, Pe, opBytes{0x0f, 0x38, 0x82, 0}}, |
| {ALFENCE, ynone, Pm, opBytes{0xae, 0xe8}}, |
| {AMFENCE, ynone, Pm, opBytes{0xae, 0xf0}}, |
| {AMOVNTIL, yrl_ml, Pm, opBytes{0xc3}}, |
| {AMOVNTIQ, yrl_ml, Pw, opBytes{0x0f, 0xc3}}, |
| {ARDPKRU, ynone, Pm, opBytes{0x01, 0xee, 0}}, |
| {ARDMSR, ynone, Pm, opBytes{0x32}}, |
| {ARDPMC, ynone, Pm, opBytes{0x33}}, |
| {ARDTSC, ynone, Pm, opBytes{0x31}}, |
| {ARSM, ynone, Pm, opBytes{0xaa}}, |
| {ASFENCE, ynone, Pm, opBytes{0xae, 0xf8}}, |
| {ASYSRET, ynone, Pm, opBytes{0x07}}, |
| {AWBINVD, ynone, Pm, opBytes{0x09}}, |
| {AWRMSR, ynone, Pm, opBytes{0x30}}, |
| {AWRPKRU, ynone, Pm, opBytes{0x01, 0xef, 0}}, |
| {AXADDB, yrb_mb, Pb, opBytes{0x0f, 0xc0}}, |
| {AXADDL, yrl_ml, Px, opBytes{0x0f, 0xc1}}, |
| {AXADDQ, yrl_ml, Pw, opBytes{0x0f, 0xc1}}, |
| {AXADDW, yrl_ml, Pe, opBytes{0x0f, 0xc1}}, |
| {ACRC32B, ycrc32b, Px, opBytes{0xf2, 0x0f, 0x38, 0xf0, 0}}, |
| {ACRC32L, ycrc32l, Px, opBytes{0xf2, 0x0f, 0x38, 0xf1, 0}}, |
| {ACRC32Q, ycrc32l, Pw, opBytes{0xf2, 0x0f, 0x38, 0xf1, 0}}, |
| {ACRC32W, ycrc32l, Pe, opBytes{0xf2, 0x0f, 0x38, 0xf1, 0}}, |
| {APREFETCHT0, yprefetch, Pm, opBytes{0x18, 01}}, |
| {APREFETCHT1, yprefetch, Pm, opBytes{0x18, 02}}, |
| {APREFETCHT2, yprefetch, Pm, opBytes{0x18, 03}}, |
| {APREFETCHNTA, yprefetch, Pm, opBytes{0x18, 00}}, |
| {AMOVQL, yrl_ml, Px, opBytes{0x89}}, |
| {obj.AUNDEF, ynone, Px, opBytes{0x0f, 0x0b}}, |
| {AAESENC, yaes, Pq, opBytes{0x38, 0xdc, 0}}, |
| {AAESENCLAST, yaes, Pq, opBytes{0x38, 0xdd, 0}}, |
| {AAESDEC, yaes, Pq, opBytes{0x38, 0xde, 0}}, |
| {AAESDECLAST, yaes, Pq, opBytes{0x38, 0xdf, 0}}, |
| {AAESIMC, yaes, Pq, opBytes{0x38, 0xdb, 0}}, |
| {AAESKEYGENASSIST, yxshuf, Pq, opBytes{0x3a, 0xdf, 0}}, |
| {AROUNDPD, yxshuf, Pq, opBytes{0x3a, 0x09, 0}}, |
| {AROUNDPS, yxshuf, Pq, opBytes{0x3a, 0x08, 0}}, |
| {AROUNDSD, yxshuf, Pq, opBytes{0x3a, 0x0b, 0}}, |
| {AROUNDSS, yxshuf, Pq, opBytes{0x3a, 0x0a, 0}}, |
| {APSHUFD, yxshuf, Pq, opBytes{0x70, 0}}, |
| {APCLMULQDQ, yxshuf, Pq, opBytes{0x3a, 0x44, 0}}, |
| {APCMPESTRI, yxshuf, Pq, opBytes{0x3a, 0x61, 0}}, |
| {APCMPESTRM, yxshuf, Pq, opBytes{0x3a, 0x60, 0}}, |
| {AMOVDDUP, yxm, Pf2, opBytes{0x12}}, |
| {AMOVSHDUP, yxm, Pf3, opBytes{0x16}}, |
| {AMOVSLDUP, yxm, Pf3, opBytes{0x12}}, |
| {ARDTSCP, ynone, Pm, opBytes{0x01, 0xf9, 0}}, |
| {ASTAC, ynone, Pm, opBytes{0x01, 0xcb, 0}}, |
| {AUD1, ynone, Pm, opBytes{0xb9, 0}}, |
| {AUD2, ynone, Pm, opBytes{0x0b, 0}}, |
| {AUMWAIT, ywrfsbase, Pf2, opBytes{0xae, 06}}, |
| {ASYSENTER, ynone, Px, opBytes{0x0f, 0x34, 0}}, |
| {ASYSENTER64, ynone, Pw, opBytes{0x0f, 0x34, 0}}, |
| {ASYSEXIT, ynone, Px, opBytes{0x0f, 0x35, 0}}, |
| {ASYSEXIT64, ynone, Pw, opBytes{0x0f, 0x35, 0}}, |
| {ALMSW, ydivl, Pm, opBytes{0x01, 06}}, |
| {ALLDT, ydivl, Pm, opBytes{0x00, 02}}, |
| {ALIDT, ysvrs_mo, Pm, opBytes{0x01, 03}}, |
| {ALGDT, ysvrs_mo, Pm, opBytes{0x01, 02}}, |
| {ATZCNTW, ycrc32l, Pe, opBytes{0xf3, 0x0f, 0xbc, 0}}, |
| {ATZCNTL, ycrc32l, Px, opBytes{0xf3, 0x0f, 0xbc, 0}}, |
| {ATZCNTQ, ycrc32l, Pw, opBytes{0xf3, 0x0f, 0xbc, 0}}, |
| {AXRSTOR, ydivl, Px, opBytes{0x0f, 0xae, 05}}, |
| {AXRSTOR64, ydivl, Pw, opBytes{0x0f, 0xae, 05}}, |
| {AXRSTORS, ydivl, Px, opBytes{0x0f, 0xc7, 03}}, |
| {AXRSTORS64, ydivl, Pw, opBytes{0x0f, 0xc7, 03}}, |
| {AXSAVE, yclflush, Px, opBytes{0x0f, 0xae, 04}}, |
| {AXSAVE64, yclflush, Pw, opBytes{0x0f, 0xae, 04}}, |
| {AXSAVEOPT, yclflush, Px, opBytes{0x0f, 0xae, 06}}, |
| {AXSAVEOPT64, yclflush, Pw, opBytes{0x0f, 0xae, 06}}, |
| {AXSAVEC, yclflush, Px, opBytes{0x0f, 0xc7, 04}}, |
| {AXSAVEC64, yclflush, Pw, opBytes{0x0f, 0xc7, 04}}, |
| {AXSAVES, yclflush, Px, opBytes{0x0f, 0xc7, 05}}, |
| {AXSAVES64, yclflush, Pw, opBytes{0x0f, 0xc7, 05}}, |
| {ASGDT, yclflush, Pm, opBytes{0x01, 00}}, |
| {ASIDT, yclflush, Pm, opBytes{0x01, 01}}, |
| {ARDRANDW, yrdrand, Pe, opBytes{0x0f, 0xc7, 06}}, |
| {ARDRANDL, yrdrand, Px, opBytes{0x0f, 0xc7, 06}}, |
| {ARDRANDQ, yrdrand, Pw, opBytes{0x0f, 0xc7, 06}}, |
| {ARDSEEDW, yrdrand, Pe, opBytes{0x0f, 0xc7, 07}}, |
| {ARDSEEDL, yrdrand, Px, opBytes{0x0f, 0xc7, 07}}, |
| {ARDSEEDQ, yrdrand, Pw, opBytes{0x0f, 0xc7, 07}}, |
| {ASTRW, yincq, Pe, opBytes{0x0f, 0x00, 01}}, |
| {ASTRL, yincq, Px, opBytes{0x0f, 0x00, 01}}, |
| {ASTRQ, yincq, Pw, opBytes{0x0f, 0x00, 01}}, |
| {AXSETBV, ynone, Pm, opBytes{0x01, 0xd1, 0}}, |
| {AMOVBEWW, ymovbe, Pq, opBytes{0x38, 0xf0, 0, 0x38, 0xf1, 0}}, |
| {AMOVBELL, ymovbe, Pm, opBytes{0x38, 0xf0, 0, 0x38, 0xf1, 0}}, |
| {AMOVBEQQ, ymovbe, Pw, opBytes{0x0f, 0x38, 0xf0, 0, 0x0f, 0x38, 0xf1, 0}}, |
| {ANOPW, ydivl, Pe, opBytes{0x0f, 0x1f, 00}}, |
| {ANOPL, ydivl, Px, opBytes{0x0f, 0x1f, 00}}, |
| {ASLDTW, yincq, Pe, opBytes{0x0f, 0x00, 00}}, |
| {ASLDTL, yincq, Px, opBytes{0x0f, 0x00, 00}}, |
| {ASLDTQ, yincq, Pw, opBytes{0x0f, 0x00, 00}}, |
| {ASMSWW, yincq, Pe, opBytes{0x0f, 0x01, 04}}, |
| {ASMSWL, yincq, Px, opBytes{0x0f, 0x01, 04}}, |
| {ASMSWQ, yincq, Pw, opBytes{0x0f, 0x01, 04}}, |
| {ABLENDVPS, yblendvpd, Pq4, opBytes{0x14}}, |
| {ABLENDVPD, yblendvpd, Pq4, opBytes{0x15}}, |
| {APBLENDVB, yblendvpd, Pq4, opBytes{0x10}}, |
| {ASHA1MSG1, yaes, Px, opBytes{0x0f, 0x38, 0xc9, 0}}, |
| {ASHA1MSG2, yaes, Px, opBytes{0x0f, 0x38, 0xca, 0}}, |
| {ASHA1NEXTE, yaes, Px, opBytes{0x0f, 0x38, 0xc8, 0}}, |
| {ASHA256MSG1, yaes, Px, opBytes{0x0f, 0x38, 0xcc, 0}}, |
| {ASHA256MSG2, yaes, Px, opBytes{0x0f, 0x38, 0xcd, 0}}, |
| {ASHA1RNDS4, ysha1rnds4, Pm, opBytes{0x3a, 0xcc, 0}}, |
| {ASHA256RNDS2, ysha256rnds2, Px, opBytes{0x0f, 0x38, 0xcb, 0}}, |
| {ARDFSBASEL, yrdrand, Pf3, opBytes{0xae, 00}}, |
| {ARDFSBASEQ, yrdrand, Pfw, opBytes{0xae, 00}}, |
| {ARDGSBASEL, yrdrand, Pf3, opBytes{0xae, 01}}, |
| {ARDGSBASEQ, yrdrand, Pfw, opBytes{0xae, 01}}, |
| {AWRFSBASEL, ywrfsbase, Pf3, opBytes{0xae, 02}}, |
| {AWRFSBASEQ, ywrfsbase, Pfw, opBytes{0xae, 02}}, |
| {AWRGSBASEL, ywrfsbase, Pf3, opBytes{0xae, 03}}, |
| {AWRGSBASEQ, ywrfsbase, Pfw, opBytes{0xae, 03}}, |
| {ALFSW, ym_rl, Pe, opBytes{0x0f, 0xb4}}, |
| {ALFSL, ym_rl, Px, opBytes{0x0f, 0xb4}}, |
| {ALFSQ, ym_rl, Pw, opBytes{0x0f, 0xb4}}, |
| {ALGSW, ym_rl, Pe, opBytes{0x0f, 0xb5}}, |
| {ALGSL, ym_rl, Px, opBytes{0x0f, 0xb5}}, |
| {ALGSQ, ym_rl, Pw, opBytes{0x0f, 0xb5}}, |
| {ALSSW, ym_rl, Pe, opBytes{0x0f, 0xb2}}, |
| {ALSSL, ym_rl, Px, opBytes{0x0f, 0xb2}}, |
| {ALSSQ, ym_rl, Pw, opBytes{0x0f, 0xb2}}, |
| |
| {ABLENDPD, yxshuf, Pq, opBytes{0x3a, 0x0d, 0}}, |
| {ABLENDPS, yxshuf, Pq, opBytes{0x3a, 0x0c, 0}}, |
| {AXACQUIRE, ynone, Px, opBytes{0xf2}}, |
| {AXRELEASE, ynone, Px, opBytes{0xf3}}, |
| {AXBEGIN, yxbegin, Px, opBytes{0xc7, 0xf8}}, |
| {AXABORT, yxabort, Px, opBytes{0xc6, 0xf8}}, |
| {AXEND, ynone, Px, opBytes{0x0f, 01, 0xd5}}, |
| {AXTEST, ynone, Px, opBytes{0x0f, 01, 0xd6}}, |
| {AXGETBV, ynone, Pm, opBytes{01, 0xd0}}, |
| {obj.AFUNCDATA, yfuncdata, Px, opBytes{0, 0}}, |
| {obj.APCDATA, ypcdata, Px, opBytes{0, 0}}, |
| {obj.ADUFFCOPY, yduff, Px, opBytes{0xe8}}, |
| {obj.ADUFFZERO, yduff, Px, opBytes{0xe8}}, |
| |
| {obj.AEND, nil, 0, opBytes{}}, |
| {0, nil, 0, opBytes{}}, |
| } |
| |
| var opindex [(ALAST + 1) & obj.AMask]*Optab |
| |
| // useAbs reports whether s describes a symbol that must avoid pc-relative addressing. |
| // This happens on systems like Solaris that call .so functions instead of system calls. |
| // It does not seem to be necessary for any other systems. This is probably working |
| // around a Solaris-specific bug that should be fixed differently, but we don't know |
| // what that bug is. And this does fix it. |
| func useAbs(ctxt *obj.Link, s *obj.LSym) bool { |
| if ctxt.Headtype == objabi.Hsolaris { |
| // All the Solaris dynamic imports from libc.so begin with "libc_". |
| return strings.HasPrefix(s.Name, "libc_") |
| } |
| return ctxt.Arch.Family == sys.I386 && !ctxt.Flag_shared |
| } |
| |
| // single-instruction no-ops of various lengths. |
| // constructed by hand and disassembled with gdb to verify. |
| // see http://www.agner.org/optimize/optimizing_assembly.pdf for discussion. |
| var nop = [][16]uint8{ |
| {0x90}, |
| {0x66, 0x90}, |
| {0x0F, 0x1F, 0x00}, |
| {0x0F, 0x1F, 0x40, 0x00}, |
| {0x0F, 0x1F, 0x44, 0x00, 0x00}, |
| {0x66, 0x0F, 0x1F, 0x44, 0x00, 0x00}, |
| {0x0F, 0x1F, 0x80, 0x00, 0x00, 0x00, 0x00}, |
| {0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, |
| {0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, |
| } |
| |
| // Native Client rejects the repeated 0x66 prefix. |
| // {0x66, 0x66, 0x0F, 0x1F, 0x84, 0x00, 0x00, 0x00, 0x00, 0x00}, |
| func fillnop(p []byte, n int) { |
| var m int |
| |
| for n > 0 { |
| m = n |
| if m > len(nop) { |
| m = len(nop) |
| } |
| copy(p[:m], nop[m-1][:m]) |
| p = p[m:] |
| n -= m |
| } |
| } |
| |
| func noppad(ctxt *obj.Link, s *obj.LSym, c int32, pad int32) int32 { |
| s.Grow(int64(c) + int64(pad)) |
| fillnop(s.P[c:], int(pad)) |
| return c + pad |
| } |
| |
| func spadjop(ctxt *obj.Link, l, q obj.As) obj.As { |
| if ctxt.Arch.Family != sys.AMD64 || ctxt.Arch.PtrSize == 4 { |
| return l |
| } |
| return q |
| } |
| |
| // If the environment variable GOAMD64=alignedjumps the assembler will ensure that |
| // no standalone or macro-fused jump will straddle or end on a 32 byte boundary |
| // by inserting NOPs before the jumps |
| func isJump(p *obj.Prog) bool { |
| return p.Pcond != nil || p.As == obj.AJMP || p.As == obj.ACALL || |
| p.As == obj.ARET || p.As == obj.ADUFFCOPY || p.As == obj.ADUFFZERO |
| } |
| |
| // lookForJCC returns the first real instruction starting from p, if that instruction is a conditional |
| // jump. Otherwise, nil is returned. |
| func lookForJCC(p *obj.Prog) *obj.Prog { |
| // Skip any PCDATA, FUNCDATA or NOP instructions |
| var q *obj.Prog |
| for q = p.Link; q != nil && (q.As == obj.APCDATA || q.As == obj.AFUNCDATA || q.As == obj.ANOP); q = q.Link { |
| } |
| |
| if q == nil || q.Pcond == nil || p.As == obj.AJMP || p.As == obj.ACALL { |
| return nil |
| } |
| |
| switch q.As { |
| case AJOS, AJOC, AJCS, AJCC, AJEQ, AJNE, AJLS, AJHI, |
| AJMI, AJPL, AJPS, AJPC, AJLT, AJGE, AJLE, AJGT: |
| default: |
| return nil |
| } |
| |
| return q |
| } |
| |
| // fusedJump determines whether p can be fused with a subsequent conditional jump instruction. |
| // If it can, we return true followed by the total size of the fused jump. If it can't, we return false. |
| // Macro fusion rules are derived from the Intel Optimization Manual (April 2019) section 3.4.2.2. |
| func fusedJump(p *obj.Prog) (bool, uint8) { |
| var fusedSize uint8 |
| |
| // The first instruction in a macro fused pair may be preceeded by the LOCK prefix, |
| // or possibly an XACQUIRE/XRELEASE prefix followed by a LOCK prefix. If it is, we |
| // need to be careful to insert any padding before the locks rather than directly after them. |
| |
| if p.As == AXRELEASE || p.As == AXACQUIRE { |
| fusedSize += p.Isize |
| for p = p.Link; p != nil && (p.As == obj.APCDATA || p.As == obj.AFUNCDATA); p = p.Link { |
| } |
| if p == nil { |
| return false, 0 |
| } |
| } |
| if p.As == ALOCK { |
| fusedSize += p.Isize |
| for p = p.Link; p != nil && (p.As == obj.APCDATA || p.As == obj.AFUNCDATA); p = p.Link { |
| } |
| if p == nil { |
| return false, 0 |
| } |
| } |
| cmp := p.As == ACMPB || p.As == ACMPL || p.As == ACMPQ || p.As == ACMPW |
| |
| cmpAddSub := p.As == AADDB || p.As == AADDL || p.As == AADDW || p.As == AADDQ || |
| p.As == ASUBB || p.As == ASUBL || p.As == ASUBW || p.As == ASUBQ || cmp |
| |
| testAnd := p.As == ATESTB || p.As == ATESTL || p.As == ATESTQ || p.As == ATESTW || |
| p.As == AANDB || p.As == AANDL || p.As == AANDQ || p.As == AANDW |
| |
| incDec := p.As == AINCB || p.As == AINCL || p.As == AINCQ || p.As == AINCW || |
| p.As == ADECB || p.As == ADECL || p.As == ADECQ || p.As == ADECW |
| |
| if !cmpAddSub && !testAnd && !incDec { |
| return false, 0 |
| } |
| |
| if !incDec { |
| var argOne obj.AddrType |
| var argTwo obj.AddrType |
| if cmp { |
| argOne = p.From.Type |
| argTwo = p.To.Type |
| } else { |
| argOne = p.To.Type |
| argTwo = p.From.Type |
| } |
| if argOne == obj.TYPE_REG { |
| if argTwo != obj.TYPE_REG && argTwo != obj.TYPE_CONST && argTwo != obj.TYPE_MEM { |
| return false, 0 |
| } |
| } else if argOne == obj.TYPE_MEM { |
| if argTwo != obj.TYPE_REG { |
| return false, 0 |
| } |
| } else { |
| return false, 0 |
| } |
| } |
| |
| fusedSize += p.Isize |
| jmp := lookForJCC(p) |
| if jmp == nil { |
| return false, 0 |
| } |
| |
| fusedSize += jmp.Isize |
| |
| if testAnd { |
| return true, fusedSize |
| } |
| |
| if jmp.As == AJOC || jmp.As == AJOS || jmp.As == AJMI || |
| jmp.As == AJPL || jmp.As == AJPS || jmp.As == AJPC { |
| return false, 0 |
| } |
| |
| if cmpAddSub { |
| return true, fusedSize |
| } |
| |
| if jmp.As == AJCS || jmp.As == AJCC || jmp.As == AJHI || jmp.As == AJLS { |
| return false, 0 |
| } |
| |
| return true, fusedSize |
| } |
| |
| type padJumpsCtx int32 |
| |
| func makePjcCtx(ctxt *obj.Link) padJumpsCtx { |
| // Disable jump padding on 32 bit builds by settting |
| // padJumps to 0. |
| if ctxt.Arch.Family == sys.I386 { |
| return padJumpsCtx(0) |
| } |
| |
| // Disable jump padding for hand written assembly code. |
| if ctxt.IsAsm { |
| return padJumpsCtx(0) |
| } |
| |
| if objabi.GOAMD64 != "alignedjumps" { |
| return padJumpsCtx(0) |
| |
| } |
| |
| return padJumpsCtx(32) |
| } |
| |
| // padJump detects whether the instruction being assembled is a standalone or a macro-fused |
| // jump that needs to be padded. If it is, NOPs are inserted to ensure that the jump does |
| // not cross or end on a 32 byte boundary. |
| func (pjc padJumpsCtx) padJump(ctxt *obj.Link, s *obj.LSym, p *obj.Prog, c int32) int32 { |
| if pjc == 0 { |
| return c |
| } |
| |
| var toPad int32 |
| fj, fjSize := fusedJump(p) |
| mask := int32(pjc - 1) |
| if fj { |
| if (c&mask)+int32(fjSize) >= int32(pjc) { |
| toPad = int32(pjc) - (c & mask) |
| } |
| } else if isJump(p) { |
| if (c&mask)+int32(p.Isize) >= int32(pjc) { |
| toPad = int32(pjc) - (c & mask) |
| } |
| } |
| if toPad <= 0 { |
| return c |
| } |
| |
| return noppad(ctxt, s, c, toPad) |
| } |
| |
| // reAssemble is called if an instruction's size changes during assembly. If |
| // it does and the instruction is a standalone or a macro-fused jump we need to |
| // reassemble. |
| func (pjc padJumpsCtx) reAssemble(p *obj.Prog) bool { |
| if pjc == 0 { |
| return false |
| } |
| |
| fj, _ := fusedJump(p) |
| return fj || isJump(p) |
| } |
| |
| type nopPad struct { |
| p *obj.Prog // Instruction before the pad |
| n int32 // Size of the pad |
| } |
| |
| func span6(ctxt *obj.Link, s *obj.LSym, newprog obj.ProgAlloc) { |
| pjc := makePjcCtx(ctxt) |
| |
| if s.P != nil { |
| return |
| } |
| |
| if ycover[0] == 0 { |
| ctxt.Diag("x86 tables not initialized, call x86.instinit first") |
| } |
| |
| for p := s.Func.Text; p != nil; p = p.Link { |
| if p.To.Type == obj.TYPE_BRANCH && p.Pcond == nil { |
| p.Pcond = p |
| } |
| if p.As == AADJSP { |
| p.To.Type = obj.TYPE_REG |
| p.To.Reg = REG_SP |
| // Generate 'ADDQ $x, SP' or 'SUBQ $x, SP', with x positive. |
| // One exception: It is smaller to encode $-0x80 than $0x80. |
| // For that case, flip the sign and the op: |
| // Instead of 'ADDQ $0x80, SP', generate 'SUBQ $-0x80, SP'. |
| switch v := p.From.Offset; { |
| case v == 0: |
| p.As = obj.ANOP |
| case v == 0x80 || (v < 0 && v != -0x80): |
| p.As = spadjop(ctxt, AADDL, AADDQ) |
| p.From.Offset *= -1 |
| default: |
| p.As = spadjop(ctxt, ASUBL, ASUBQ) |
| } |
| } |
| if ctxt.Retpoline && (p.As == obj.ACALL || p.As == obj.AJMP) && (p.To.Type == obj.TYPE_REG || p.To.Type == obj.TYPE_MEM) { |
| if p.To.Type != obj.TYPE_REG { |
| ctxt.Diag("non-retpoline-compatible: %v", p) |
| continue |
| } |
| p.To.Type = obj.TYPE_BRANCH |
| p.To.Name = obj.NAME_EXTERN |
| p.To.Sym = ctxt.Lookup("runtime.retpoline" + obj.Rconv(int(p.To.Reg))) |
| p.To.Reg = 0 |
| p.To.Offset = 0 |
| } |
| } |
| |
| var count int64 // rough count of number of instructions |
| for p := s.Func.Text; p != nil; p = p.Link { |
| count++ |
| p.Back = branchShort // use short branches first time through |
| if q := p.Pcond; q != nil && (q.Back&branchShort != 0) { |
| p.Back |= branchBackwards |
| q.Back |= branchLoopHead |
| } |
| } |
| s.GrowCap(count * 5) // preallocate roughly 5 bytes per instruction |
| |
| var ab AsmBuf |
| var n int |
| var c int32 |
| errors := ctxt.Errors |
| var nops []nopPad // Padding for a particular assembly (reuse slice storage if multiple assemblies) |
| for { |
| // This loop continues while there are reasons to re-assemble |
| // whole block, like the presence of long forward jumps. |
| reAssemble := false |
| for i := range s.R { |
| s.R[i] = obj.Reloc{} |
| } |
| s.R = s.R[:0] |
| s.P = s.P[:0] |
| c = 0 |
| var pPrev *obj.Prog |
| nops = nops[:0] |
| for p := s.Func.Text; p != nil; p = p.Link { |
| c0 := c |
| c = pjc.padJump(ctxt, s, p, c) |
| |
| if maxLoopPad > 0 && p.Back&branchLoopHead != 0 && c&(loopAlign-1) != 0 { |
| // pad with NOPs |
| v := -c & (loopAlign - 1) |
| |
| if v <= maxLoopPad { |
| s.Grow(int64(c) + int64(v)) |
| fillnop(s.P[c:], int(v)) |
| c += v |
| } |
| } |
| |
| p.Pc = int64(c) |
| |
| // process forward jumps to p |
| for q := p.Rel; q != nil; q = q.Forwd { |
| v := int32(p.Pc - (q.Pc + int64(q.Isize))) |
| if q.Back&branchShort != 0 { |
| if v > 127 { |
| reAssemble = true |
| q.Back ^= branchShort |
| } |
| |
| if q.As == AJCXZL || q.As == AXBEGIN { |
| s.P[q.Pc+2] = byte(v) |
| } else { |
| s.P[q.Pc+1] = byte(v) |
| } |
| } else { |
| binary.LittleEndian.PutUint32(s.P[q.Pc+int64(q.Isize)-4:], uint32(v)) |
| } |
| } |
| |
| p.Rel = nil |
| |
| p.Pc = int64(c) |
| ab.asmins(ctxt, s, p) |
| m := ab.Len() |
| if int(p.Isize) != m { |
| p.Isize = uint8(m) |
| if pjc.reAssemble(p) { |
| // We need to re-assemble here to check for jumps and fused jumps |
| // that span or end on 32 byte boundaries. |
| reAssemble = true |
| } |
| } |
| |
| s.Grow(p.Pc + int64(m)) |
| copy(s.P[p.Pc:], ab.Bytes()) |
| // If there was padding, remember it. |
| if pPrev != nil && !ctxt.IsAsm && c > c0 { |
| nops = append(nops, nopPad{p: pPrev, n: c - c0}) |
| } |
| c += int32(m) |
| pPrev = p |
| } |
| |
| n++ |
| if n > 20 { |
| ctxt.Diag("span must be looping") |
| log.Fatalf("loop") |
| } |
| if !reAssemble { |
| break |
| } |
| if ctxt.Errors > errors { |
| return |
| } |
| } |
| // splice padding nops into Progs |
| for _, n := range nops { |
| pp := n.p |
| np := &obj.Prog{Link: pp.Link, Ctxt: pp.Ctxt, As: obj.ANOP, Pos: pp.Pos.WithNotStmt(), Pc: pp.Pc + int64(pp.Isize), Isize: uint8(n.n)} |
| pp.Link = np |
| } |
| |
| s.Size = int64(c) |
| |
| if false { /* debug['a'] > 1 */ |
| fmt.Printf("span1 %s %d (%d tries)\n %.6x", s.Name, s.Size, n, 0) |
| var i int |
| for i = 0; i < len(s.P); i++ { |
| fmt.Printf(" %.2x", s.P[i]) |
| if i%16 == 15 { |
| fmt.Printf("\n %.6x", uint(i+1)) |
| } |
| } |
| |
| if i%16 != 0 { |
| fmt.Printf("\n") |
| } |
| |
| for i := 0; i < len(s.R); i++ { |
| r := &s.R[i] |
| fmt.Printf(" rel %#.4x/%d %s%+d\n", uint32(r.Off), r.Siz, r.Sym.Name, r.Add) |
| } |
| } |
| |
| // Mark nonpreemptible instruction sequences. |
| // The 2-instruction TLS access sequence |
| // MOVQ TLS, BX |
| // MOVQ 0(BX)(TLS*1), BX |
| // is not async preemptible, as if it is preempted and resumed on |
| // a different thread, the TLS address may become invalid. |
| if !CanUse1InsnTLS(ctxt) { |
| useTLS := func(p *obj.Prog) bool { |
| // Only need to mark the second instruction, which has |
| // REG_TLS as Index. (It is okay to interrupt and restart |
| // the first instruction.) |
| return p.From.Index == REG_TLS |
| } |
| obj.MarkUnsafePoints(ctxt, s.Func.Text, newprog, useTLS, nil) |
| } |
| } |
| |
| func instinit(ctxt *obj.Link) { |
| if ycover[0] != 0 { |
| // Already initialized; stop now. |
| // This happens in the cmd/asm tests, |
| // each of which re-initializes the arch. |
| return |
| } |
| |
| switch ctxt.Headtype { |
| case objabi.Hplan9: |
| plan9privates = ctxt.Lookup("_privates") |
| } |
| |
| for i := range avxOptab { |
| c := avxOptab[i].as |
| if opindex[c&obj.AMask] != nil { |
| ctxt.Diag("phase error in avxOptab: %d (%v)", i, c) |
| } |
| opindex[c&obj.AMask] = &avxOptab[i] |
| } |
| for i := 1; optab[i].as != 0; i++ { |
| c := optab[i].as |
| if opindex[c&obj.AMask] != nil { |
| ctxt.Diag("phase error in optab: %d (%v)", i, c) |
| } |
| opindex[c&obj.AMask] = &optab[i] |
| } |
| |
| for i := 0; i < Ymax; i++ { |
| ycover[i*Ymax+i] = 1 |
| } |
| |
| ycover[Yi0*Ymax+Yu2] = 1 |
| ycover[Yi1*Ymax+Yu2] = 1 |
| |
| ycover[Yi0*Ymax+Yi8] = 1 |
| ycover[Yi1*Ymax+Yi8] = 1 |
| ycover[Yu2*Ymax+Yi8] = 1 |
| ycover[Yu7*Ymax+Yi8] = 1 |
| |
| ycover[Yi0*Ymax+Yu7] = 1 |
| ycover[Yi1*Ymax+Yu7] = 1 |
| ycover[Yu2*Ymax+Yu7] = 1 |
| |
| ycover[Yi0*Ymax+Yu8] = 1 |
| ycover[Yi1*Ymax+Yu8] = 1 |
| ycover[Yu2*Ymax+Yu8] = 1 |
| ycover[Yu7*Ymax+Yu8] = 1 |
| |
| ycover[Yi0*Ymax+Ys32] = 1 |
| ycover[Yi1*Ymax+Ys32] = 1 |
| ycover[Yu2*Ymax+Ys32] = 1 |
| ycover[Yu7*Ymax+Ys32] = 1 |
| ycover[Yu8*Ymax+Ys32] = 1 |
| ycover[Yi8*Ymax+Ys32] = 1 |
| |
| ycover[Yi0*Ymax+Yi32] = 1 |
| ycover[Yi1*Ymax+Yi32] = 1 |
| ycover[Yu2*Ymax+Yi32] = 1 |
| ycover[Yu7*Ymax+Yi32] = 1 |
| ycover[Yu8*Ymax+Yi32] = 1 |
| ycover[Yi8*Ymax+Yi32] = 1 |
| ycover[Ys32*Ymax+Yi32] = 1 |
| |
| ycover[Yi0*Ymax+Yi64] = 1 |
| ycover[Yi1*Ymax+Yi64] = 1 |
| ycover[Yu7*Ymax+Yi64] = 1 |
| ycover[Yu2*Ymax+Yi64] = 1 |
| ycover[Yu8*Ymax+Yi64] = 1 |
| ycover[Yi8*Ymax+Yi64] = 1 |
| ycover[Ys32*Ymax+Yi64] = 1 |
| ycover[Yi32*Ymax+Yi64] = 1 |
| |
| ycover[Yal*Ymax+Yrb] = 1 |
| ycover[Ycl*Ymax+Yrb] = 1 |
| ycover[Yax*Ymax+Yrb] = 1 |
| ycover[Ycx*Ymax+Yrb] = 1 |
| ycover[Yrx*Ymax+Yrb] = 1 |
| ycover[Yrl*Ymax+Yrb] = 1 // but not Yrl32 |
| |
| ycover[Ycl*Ymax+Ycx] = 1 |
| |
| ycover[Yax*Ymax+Yrx] = 1 |
| ycover[Ycx*Ymax+Yrx] = 1 |
| |
| ycover[Yax*Ymax+Yrl] = 1 |
| ycover[Ycx*Ymax+Yrl] = 1 |
| ycover[Yrx*Ymax+Yrl] = 1 |
| ycover[Yrl32*Ymax+Yrl] = 1 |
| |
| ycover[Yf0*Ymax+Yrf] = 1 |
| |
| ycover[Yal*Ymax+Ymb] = 1 |
| ycover[Ycl*Ymax+Ymb] = 1 |
| ycover[Yax*Ymax+Ymb] = 1 |
| ycover[Ycx*Ymax+Ymb] = 1 |
| ycover[Yrx*Ymax+Ymb] = 1 |
| ycover[Yrb*Ymax+Ymb] = 1 |
| ycover[Yrl*Ymax+Ymb] = 1 // but not Yrl32 |
| ycover[Ym*Ymax+Ymb] = 1 |
| |
| ycover[Yax*Ymax+Yml] = 1 |
| ycover[Ycx*Ymax+Yml] = 1 |
| ycover[Yrx*Ymax+Yml] = 1 |
| ycover[Yrl*Ymax+Yml] = 1 |
| ycover[Yrl32*Ymax+Yml] = 1 |
| ycover[Ym*Ymax+Yml] = 1 |
| |
| ycover[Yax*Ymax+Ymm] = 1 |
| ycover[Ycx*Ymax+Ymm] = 1 |
| ycover[Yrx*Ymax+Ymm] = 1 |
| ycover[Yrl*Ymax+Ymm] = 1 |
| ycover[Yrl32*Ymax+Ymm] = 1 |
| ycover[Ym*Ymax+Ymm] = 1 |
| ycover[Ymr*Ymax+Ymm] = 1 |
| |
| ycover[Yxr0*Ymax+Yxr] = 1 |
| |
| ycover[Ym*Ymax+Yxm] = 1 |
| ycover[Yxr0*Ymax+Yxm] = 1 |
| ycover[Yxr*Ymax+Yxm] = 1 |
| |
| ycover[Ym*Ymax+Yym] = 1 |
| ycover[Yyr*Ymax+Yym] = 1 |
| |
| ycover[Yxr0*Ymax+YxrEvex] = 1 |
| ycover[Yxr*Ymax+YxrEvex] = 1 |
| |
| ycover[Ym*Ymax+YxmEvex] = 1 |
| ycover[Yxr0*Ymax+YxmEvex] = 1 |
| ycover[Yxr*Ymax+YxmEvex] = 1 |
| ycover[YxrEvex*Ymax+YxmEvex] = 1 |
| |
| ycover[Yyr*Ymax+YyrEvex] = 1 |
| |
| ycover[Ym*Ymax+YymEvex] = 1 |
| ycover[Yyr*Ymax+YymEvex] = 1 |
| ycover[YyrEvex*Ymax+YymEvex] = 1 |
| |
| ycover[Ym*Ymax+Yzm] = 1 |
| ycover[Yzr*Ymax+Yzm] = 1 |
| |
| ycover[Yk0*Ymax+Yk] = 1 |
| ycover[Yknot0*Ymax+Yk] = 1 |
| |
| ycover[Yk0*Ymax+Ykm] = 1 |
| ycover[Yknot0*Ymax+Ykm] = 1 |
| ycover[Yk*Ymax+Ykm] = 1 |
| ycover[Ym*Ymax+Ykm] = 1 |
| |
| ycover[Yxvm*Ymax+YxvmEvex] = 1 |
| |
| ycover[Yyvm*Ymax+YyvmEvex] = 1 |
| |
| for i := 0; i < MAXREG; i++ { |
| reg[i] = -1 |
| if i >= REG_AL && i <= REG_R15B { |
| reg[i] = (i - REG_AL) & 7 |
| if i >= REG_SPB && i <= REG_DIB { |
| regrex[i] = 0x40 |
| } |
| if i >= REG_R8B && i <= REG_R15B { |
| regrex[i] = Rxr | Rxx | Rxb |
| } |
| } |
| |
| if i >= REG_AH && i <= REG_BH { |
| reg[i] = 4 + ((i - REG_AH) & 7) |
| } |
| if i >= REG_AX && i <= REG_R15 { |
| reg[i] = (i - REG_AX) & 7 |
| if i >= REG_R8 { |
| regrex[i] = Rxr | Rxx | Rxb |
| } |
| } |
| |
| if i >= REG_F0 && i <= REG_F0+7 { |
| reg[i] = (i - REG_F0) & 7 |
| } |
| if i >= REG_M0 && i <= REG_M0+7 { |
| reg[i] = (i - REG_M0) & 7 |
| } |
| if i >= REG_K0 && i <= REG_K0+7 { |
| reg[i] = (i - REG_K0) & 7 |
| } |
| if i >= REG_X0 && i <= REG_X0+15 { |
| reg[i] = (i - REG_X0) & 7 |
| if i >= REG_X0+8 { |
| regrex[i] = Rxr | Rxx | Rxb |
| } |
| } |
| if i >= REG_X16 && i <= REG_X16+15 { |
| reg[i] = (i - REG_X16) & 7 |
| if i >= REG_X16+8 { |
| regrex[i] = Rxr | Rxx | Rxb | RxrEvex |
| } else { |
| regrex[i] = RxrEvex |
| } |
| } |
| if i >= REG_Y0 && i <= REG_Y0+15 { |
| reg[i] = (i - REG_Y0) & 7 |
| if i >= REG_Y0+8 { |
| regrex[i] = Rxr | Rxx | Rxb |
| } |
| } |
| if i >= REG_Y16 && i <= REG_Y16+15 { |
| reg[i] = (i - REG_Y16) & 7 |
| if i >= REG_Y16+8 { |
| regrex[i] = Rxr | Rxx | Rxb | RxrEvex |
| } else { |
| regrex[i] = RxrEvex |
| } |
| } |
| if i >= REG_Z0 && i <= REG_Z0+15 { |
| reg[i] = (i - REG_Z0) & 7 |
| if i > REG_Z0+7 { |
| regrex[i] = Rxr | Rxx | Rxb |
| } |
| } |
| if i >= REG_Z16 && i <= REG_Z16+15 { |
| reg[i] = (i - REG_Z16) & 7 |
| if i >= REG_Z16+8 { |
| regrex[i] = Rxr | Rxx | Rxb | RxrEvex |
| } else { |
| regrex[i] = RxrEvex |
| } |
| } |
| |
| if i >= REG_CR+8 && i <= REG_CR+15 { |
| regrex[i] = Rxr |
| } |
| } |
| } |
| |
| var isAndroid = objabi.GOOS == "android" |
| |
| func prefixof(ctxt *obj.Link, a *obj.Addr) int { |
| if a.Reg < REG_CS && a.Index < REG_CS { // fast path |
| return 0 |
| } |
| if a.Type == obj.TYPE_MEM && a.Name == obj.NAME_NONE { |
| switch a.Reg { |
| case REG_CS: |
| return 0x2e |
| |
| case REG_DS: |
| return 0x3e |
| |
| case REG_ES: |
| return 0x26 |
| |
| case REG_FS: |
| return 0x64 |
| |
| case REG_GS: |
| return 0x65 |
| |
| case REG_TLS: |
| // NOTE: Systems listed here should be only systems that |
| // support direct TLS references like 8(TLS) implemented as |
| // direct references from FS or GS. Systems that require |
| // the initial-exec model, where you load the TLS base into |
| // a register and then index from that register, do not reach |
| // this code and should not be listed. |
| if ctxt.Arch.Family == sys.I386 { |
| switch ctxt.Headtype { |
| default: |
| if isAndroid { |
| return 0x65 // GS |
| } |
| log.Fatalf("unknown TLS base register for %v", ctxt.Headtype) |
| |
| case objabi.Hdarwin, |
| objabi.Hdragonfly, |
| objabi.Hfreebsd, |
| objabi.Hnetbsd, |
| objabi.Hopenbsd: |
| return 0x65 // GS |
| } |
| } |
| |
| switch ctxt.Headtype { |
| default: |
| log.Fatalf("unknown TLS base register for %v", ctxt.Headtype) |
| |
| case objabi.Hlinux: |
| if isAndroid { |
| return 0x64 // FS |
| } |
| |
| if ctxt.Flag_shared { |
| log.Fatalf("unknown TLS base register for linux with -shared") |
| } else { |
| return 0x64 // FS |
| } |
| |
| case objabi.Hdragonfly, |
| objabi.Hfreebsd, |
| objabi.Hnetbsd, |
| objabi.Hopenbsd, |
| objabi.Hsolaris: |
| return 0x64 // FS |
| |
| case objabi.Hdarwin: |
| return 0x65 // GS |
| } |
| } |
| } |
| |
| if ctxt.Arch.Family == sys.I386 { |
| if a.Index == REG_TLS && ctxt.Flag_shared { |
| // When building for inclusion into a shared library, an instruction of the form |
| // MOVL off(CX)(TLS*1), AX |
| // becomes |
| // mov %gs:off(%ecx), %eax |
| // which assumes that the correct TLS offset has been loaded into %ecx (today |
| // there is only one TLS variable -- g -- so this is OK). When not building for |
| // a shared library the instruction it becomes |
| // mov 0x0(%ecx), %eax |
| // and a R_TLS_LE relocation, and so does not require a prefix. |
| return 0x65 // GS |
| } |
| return 0 |
| } |
| |
| switch a.Index { |
| case REG_CS: |
| return 0x2e |
| |
| case REG_DS: |
| return 0x3e |
| |
| case REG_ES: |
| return 0x26 |
| |
| case REG_TLS: |
| if ctxt.Flag_shared && ctxt.Headtype != objabi.Hwindows { |
| // When building for inclusion into a shared library, an instruction of the form |
| // MOV off(CX)(TLS*1), AX |
| // becomes |
| // mov %fs:off(%rcx), %rax |
| // which assumes that the correct TLS offset has been loaded into %rcx (today |
| // there is only one TLS variable -- g -- so this is OK). When not building for |
| // a shared library the instruction does not require a prefix. |
| return 0x64 |
| } |
| |
| case REG_FS: |
| return 0x64 |
| |
| case REG_GS: |
| return 0x65 |
| } |
| |
| return 0 |
| } |
| |
| // oclassRegList returns multisource operand class for addr. |
| func oclassRegList(ctxt *obj.Link, addr *obj.Addr) int { |
| // TODO(quasilyte): when oclass register case is refactored into |
| // lookup table, use it here to get register kind more easily. |
| // Helper functions like regIsXmm should go away too (they will become redundant). |
| |
| regIsXmm := func(r int) bool { return r >= REG_X0 && r <= REG_X31 } |
| regIsYmm := func(r int) bool { return r >= REG_Y0 && r <= REG_Y31 } |
| regIsZmm := func(r int) bool { return r >= REG_Z0 && r <= REG_Z31 } |
| |
| reg0, reg1 := decodeRegisterRange(addr.Offset) |
| low := regIndex(int16(reg0)) |
| high := regIndex(int16(reg1)) |
| |
| if ctxt.Arch.Family == sys.I386 { |
| if low >= 8 || high >= 8 { |
| return Yxxx |
| } |
| } |
| |
| switch high - low { |
| case 3: |
| switch { |
| case regIsXmm(reg0) && regIsXmm(reg1): |
| return YxrEvexMulti4 |
| case regIsYmm(reg0) && regIsYmm(reg1): |
| return YyrEvexMulti4 |
| case regIsZmm(reg0) && regIsZmm(reg1): |
| return YzrMulti4 |
| default: |
| return Yxxx |
| } |
| default: |
| return Yxxx |
| } |
| } |
| |
| // oclassVMem returns V-mem (vector memory with VSIB) operand class. |
| // For addr that is not V-mem returns (Yxxx, false). |
| func oclassVMem(ctxt *obj.Link, addr *obj.Addr) (int, bool) { |
| switch addr.Index { |
| case REG_X0 + 0, |
| REG_X0 + 1, |
| REG_X0 + 2, |
| REG_X0 + 3, |
| REG_X0 + 4, |
| REG_X0 + 5, |
| REG_X0 + 6, |
| REG_X0 + 7: |
| return Yxvm, true |
| case REG_X8 + 0, |
| REG_X8 + 1, |
| REG_X8 + 2, |
| REG_X8 + 3, |
| REG_X8 + 4, |
| REG_X8 + 5, |
| REG_X8 + 6, |
| REG_X8 + 7: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx, true |
| } |
| return Yxvm, true |
| case REG_X16 + 0, |
| REG_X16 + 1, |
| REG_X16 + 2, |
| REG_X16 + 3, |
| REG_X16 + 4, |
| REG_X16 + 5, |
| REG_X16 + 6, |
| REG_X16 + 7, |
| REG_X16 + 8, |
| REG_X16 + 9, |
| REG_X16 + 10, |
| REG_X16 + 11, |
| REG_X16 + 12, |
| REG_X16 + 13, |
| REG_X16 + 14, |
| REG_X16 + 15: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx, true |
| } |
| return YxvmEvex, true |
| |
| case REG_Y0 + 0, |
| REG_Y0 + 1, |
| REG_Y0 + 2, |
| REG_Y0 + 3, |
| REG_Y0 + 4, |
| REG_Y0 + 5, |
| REG_Y0 + 6, |
| REG_Y0 + 7: |
| return Yyvm, true |
| case REG_Y8 + 0, |
| REG_Y8 + 1, |
| REG_Y8 + 2, |
| REG_Y8 + 3, |
| REG_Y8 + 4, |
| REG_Y8 + 5, |
| REG_Y8 + 6, |
| REG_Y8 + 7: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx, true |
| } |
| return Yyvm, true |
| case REG_Y16 + 0, |
| REG_Y16 + 1, |
| REG_Y16 + 2, |
| REG_Y16 + 3, |
| REG_Y16 + 4, |
| REG_Y16 + 5, |
| REG_Y16 + 6, |
| REG_Y16 + 7, |
| REG_Y16 + 8, |
| REG_Y16 + 9, |
| REG_Y16 + 10, |
| REG_Y16 + 11, |
| REG_Y16 + 12, |
| REG_Y16 + 13, |
| REG_Y16 + 14, |
| REG_Y16 + 15: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx, true |
| } |
| return YyvmEvex, true |
| |
| case REG_Z0 + 0, |
| REG_Z0 + 1, |
| REG_Z0 + 2, |
| REG_Z0 + 3, |
| REG_Z0 + 4, |
| REG_Z0 + 5, |
| REG_Z0 + 6, |
| REG_Z0 + 7: |
| return Yzvm, true |
| case REG_Z8 + 0, |
| REG_Z8 + 1, |
| REG_Z8 + 2, |
| REG_Z8 + 3, |
| REG_Z8 + 4, |
| REG_Z8 + 5, |
| REG_Z8 + 6, |
| REG_Z8 + 7, |
| REG_Z8 + 8, |
| REG_Z8 + 9, |
| REG_Z8 + 10, |
| REG_Z8 + 11, |
| REG_Z8 + 12, |
| REG_Z8 + 13, |
| REG_Z8 + 14, |
| REG_Z8 + 15, |
| REG_Z8 + 16, |
| REG_Z8 + 17, |
| REG_Z8 + 18, |
| REG_Z8 + 19, |
| REG_Z8 + 20, |
| REG_Z8 + 21, |
| REG_Z8 + 22, |
| REG_Z8 + 23: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx, true |
| } |
| return Yzvm, true |
| } |
| |
| return Yxxx, false |
| } |
| |
| func oclass(ctxt *obj.Link, p *obj.Prog, a *obj.Addr) int { |
| switch a.Type { |
| case obj.TYPE_REGLIST: |
| return oclassRegList(ctxt, a) |
| |
| case obj.TYPE_NONE: |
| return Ynone |
| |
| case obj.TYPE_BRANCH: |
| return Ybr |
| |
| case obj.TYPE_INDIR: |
| if a.Name != obj.NAME_NONE && a.Reg == REG_NONE && a.Index == REG_NONE && a.Scale == 0 { |
| return Yindir |
| } |
| return Yxxx |
| |
| case obj.TYPE_MEM: |
| // Pseudo registers have negative index, but SP is |
| // not pseudo on x86, hence REG_SP check is not redundant. |
| if a.Index == REG_SP || a.Index < 0 { |
| // Can't use FP/SB/PC/SP as the index register. |
| return Yxxx |
| } |
| |
| if vmem, ok := oclassVMem(ctxt, a); ok { |
| return vmem |
| } |
| |
| if ctxt.Arch.Family == sys.AMD64 { |
| switch a.Name { |
| case obj.NAME_EXTERN, obj.NAME_STATIC, obj.NAME_GOTREF: |
| // Global variables can't use index registers and their |
| // base register is %rip (%rip is encoded as REG_NONE). |
| if a.Reg != REG_NONE || a.Index != REG_NONE || a.Scale != 0 { |
| return Yxxx |
| } |
| case obj.NAME_AUTO, obj.NAME_PARAM: |
| // These names must have a base of SP. The old compiler |
| // uses 0 for the base register. SSA uses REG_SP. |
| if a.Reg != REG_SP && a.Reg != 0 { |
| return Yxxx |
| } |
| case obj.NAME_NONE: |
| // everything is ok |
| default: |
| // unknown name |
| return Yxxx |
| } |
| } |
| return Ym |
| |
| case obj.TYPE_ADDR: |
| switch a.Name { |
| case obj.NAME_GOTREF: |
| ctxt.Diag("unexpected TYPE_ADDR with NAME_GOTREF") |
| return Yxxx |
| |
| case obj.NAME_EXTERN, |
| obj.NAME_STATIC: |
| if a.Sym != nil && useAbs(ctxt, a.Sym) { |
| return Yi32 |
| } |
| return Yiauto // use pc-relative addressing |
| |
| case obj.NAME_AUTO, |
| obj.NAME_PARAM: |
| return Yiauto |
| } |
| |
| // TODO(rsc): DUFFZERO/DUFFCOPY encoding forgot to set a->index |
| // and got Yi32 in an earlier version of this code. |
| // Keep doing that until we fix yduff etc. |
| if a.Sym != nil && strings.HasPrefix(a.Sym.Name, "runtime.duff") { |
| return Yi32 |
| } |
| |
| if a.Sym != nil || a.Name != obj.NAME_NONE { |
| ctxt.Diag("unexpected addr: %v", obj.Dconv(p, a)) |
| } |
| fallthrough |
| |
| case obj.TYPE_CONST: |
| if a.Sym != nil { |
| ctxt.Diag("TYPE_CONST with symbol: %v", obj.Dconv(p, a)) |
| } |
| |
| v := a.Offset |
| if ctxt.Arch.Family == sys.I386 { |
| v = int64(int32(v)) |
| } |
| switch { |
| case v == 0: |
| return Yi0 |
| case v == 1: |
| return Yi1 |
| case v >= 0 && v <= 3: |
| return Yu2 |
| case v >= 0 && v <= 127: |
| return Yu7 |
| case v >= 0 && v <= 255: |
| return Yu8 |
| case v >= -128 && v <= 127: |
| return Yi8 |
| } |
| if ctxt.Arch.Family == sys.I386 { |
| return Yi32 |
| } |
| l := int32(v) |
| if int64(l) == v { |
| return Ys32 // can sign extend |
| } |
| if v>>32 == 0 { |
| return Yi32 // unsigned |
| } |
| return Yi64 |
| |
| case obj.TYPE_TEXTSIZE: |
| return Ytextsize |
| } |
| |
| if a.Type != obj.TYPE_REG { |
| ctxt.Diag("unexpected addr1: type=%d %v", a.Type, obj.Dconv(p, a)) |
| return Yxxx |
| } |
| |
| switch a.Reg { |
| case REG_AL: |
| return Yal |
| |
| case REG_AX: |
| return Yax |
| |
| /* |
| case REG_SPB: |
| */ |
| case REG_BPB, |
| REG_SIB, |
| REG_DIB, |
| REG_R8B, |
| REG_R9B, |
| REG_R10B, |
| REG_R11B, |
| REG_R12B, |
| REG_R13B, |
| REG_R14B, |
| REG_R15B: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx |
| } |
| fallthrough |
| |
| case REG_DL, |
| REG_BL, |
| REG_AH, |
| REG_CH, |
| REG_DH, |
| REG_BH: |
| return Yrb |
| |
| case REG_CL: |
| return Ycl |
| |
| case REG_CX: |
| return Ycx |
| |
| case REG_DX, REG_BX: |
| return Yrx |
| |
| case REG_R8, // not really Yrl |
| REG_R9, |
| REG_R10, |
| REG_R11, |
| REG_R12, |
| REG_R13, |
| REG_R14, |
| REG_R15: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx |
| } |
| fallthrough |
| |
| case REG_SP, REG_BP, REG_SI, REG_DI: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yrl32 |
| } |
| return Yrl |
| |
| case REG_F0 + 0: |
| return Yf0 |
| |
| case REG_F0 + 1, |
| REG_F0 + 2, |
| REG_F0 + 3, |
| REG_F0 + 4, |
| REG_F0 + 5, |
| REG_F0 + 6, |
| REG_F0 + 7: |
| return Yrf |
| |
| case REG_M0 + 0, |
| REG_M0 + 1, |
| REG_M0 + 2, |
| REG_M0 + 3, |
| REG_M0 + 4, |
| REG_M0 + 5, |
| REG_M0 + 6, |
| REG_M0 + 7: |
| return Ymr |
| |
| case REG_X0: |
| return Yxr0 |
| |
| case REG_X0 + 1, |
| REG_X0 + 2, |
| REG_X0 + 3, |
| REG_X0 + 4, |
| REG_X0 + 5, |
| REG_X0 + 6, |
| REG_X0 + 7, |
| REG_X0 + 8, |
| REG_X0 + 9, |
| REG_X0 + 10, |
| REG_X0 + 11, |
| REG_X0 + 12, |
| REG_X0 + 13, |
| REG_X0 + 14, |
| REG_X0 + 15: |
| return Yxr |
| |
| case REG_X0 + 16, |
| REG_X0 + 17, |
| REG_X0 + 18, |
| REG_X0 + 19, |
| REG_X0 + 20, |
| REG_X0 + 21, |
| REG_X0 + 22, |
| REG_X0 + 23, |
| REG_X0 + 24, |
| REG_X0 + 25, |
| REG_X0 + 26, |
| REG_X0 + 27, |
| REG_X0 + 28, |
| REG_X0 + 29, |
| REG_X0 + 30, |
| REG_X0 + 31: |
| return YxrEvex |
| |
| case REG_Y0 + 0, |
| REG_Y0 + 1, |
| REG_Y0 + 2, |
| REG_Y0 + 3, |
| REG_Y0 + 4, |
| REG_Y0 + 5, |
| REG_Y0 + 6, |
| REG_Y0 + 7, |
| REG_Y0 + 8, |
| REG_Y0 + 9, |
| REG_Y0 + 10, |
| REG_Y0 + 11, |
| REG_Y0 + 12, |
| REG_Y0 + 13, |
| REG_Y0 + 14, |
| REG_Y0 + 15: |
| return Yyr |
| |
| case REG_Y0 + 16, |
| REG_Y0 + 17, |
| REG_Y0 + 18, |
| REG_Y0 + 19, |
| REG_Y0 + 20, |
| REG_Y0 + 21, |
| REG_Y0 + 22, |
| REG_Y0 + 23, |
| REG_Y0 + 24, |
| REG_Y0 + 25, |
| REG_Y0 + 26, |
| REG_Y0 + 27, |
| REG_Y0 + 28, |
| REG_Y0 + 29, |
| REG_Y0 + 30, |
| REG_Y0 + 31: |
| return YyrEvex |
| |
| case REG_Z0 + 0, |
| REG_Z0 + 1, |
| REG_Z0 + 2, |
| REG_Z0 + 3, |
| REG_Z0 + 4, |
| REG_Z0 + 5, |
| REG_Z0 + 6, |
| REG_Z0 + 7: |
| return Yzr |
| |
| case REG_Z0 + 8, |
| REG_Z0 + 9, |
| REG_Z0 + 10, |
| REG_Z0 + 11, |
| REG_Z0 + 12, |
| REG_Z0 + 13, |
| REG_Z0 + 14, |
| REG_Z0 + 15, |
| REG_Z0 + 16, |
| REG_Z0 + 17, |
| REG_Z0 + 18, |
| REG_Z0 + 19, |
| REG_Z0 + 20, |
| REG_Z0 + 21, |
| REG_Z0 + 22, |
| REG_Z0 + 23, |
| REG_Z0 + 24, |
| REG_Z0 + 25, |
| REG_Z0 + 26, |
| REG_Z0 + 27, |
| REG_Z0 + 28, |
| REG_Z0 + 29, |
| REG_Z0 + 30, |
| REG_Z0 + 31: |
| if ctxt.Arch.Family == sys.I386 { |
| return Yxxx |
| } |
| return Yzr |
| |
| case REG_K0: |
| return Yk0 |
| |
| case REG_K0 + 1, |
| REG_K0 + 2, |
| REG_K0 + 3, |
| REG_K0 + 4, |
| REG_K0 + 5, |
| REG_K0 + 6, |
| REG_K0 + 7: |
| return Yknot0 |
| |
| case REG_CS: |
| return Ycs |
| case REG_SS: |
| return Yss |
| case REG_DS: |
| return Yds |
| case REG_ES: |
| return Yes |
| case REG_FS: |
| return Yfs |
| case REG_GS: |
| return Ygs |
| case REG_TLS: |
| return Ytls |
| |
| case REG_GDTR: |
| return Ygdtr |
| case REG_IDTR: |
| return Yidtr |
| case REG_LDTR: |
| return Yldtr |
| case REG_MSW: |
| return Ymsw |
| case REG_TASK: |
| return Ytask |
| |
| case REG_CR + 0: |
| return Ycr0 |
| case REG_CR + 1: |
| return Ycr1 |
| case REG_CR + 2: |
| return Ycr2 |
| case REG_CR + 3: |
| return Ycr3 |
| case REG_CR + 4: |
| return Ycr4 |
| case REG_CR + 5: |
| return Ycr5 |
| case REG_CR + 6: |
| return Ycr6 |
| case REG_CR + 7: |
| return Ycr7 |
| case REG_CR + 8: |
| return Ycr8 |
| |
| case REG_DR + 0: |
| return Ydr0 |
| case REG_DR + 1: |
| return Ydr1 |
| case REG_DR + 2: |
| return Ydr2 |
| case REG_DR + 3: |
| return Ydr3 |
| case REG_DR + 4: |
| return Ydr4 |
| case REG_DR + 5: |
| return Ydr5 |
| case REG_DR + 6: |
| return Ydr6 |
| case REG_DR + 7: |
| return Ydr7 |
| |
| case REG_TR + 0: |
| return Ytr0 |
| case REG_TR + 1: |
| return Ytr1 |
| case REG_TR + 2: |
| return Ytr2 |
| case REG_TR + 3: |
| return Ytr3 |
| case REG_TR + 4: |
| return Ytr4 |
| case REG_TR + 5: |
| return Ytr5 |
| case REG_TR + 6: |
| return Ytr6 |
| case REG_TR + 7: |
| return Ytr7 |
| } |
| |
| return Yxxx |
| } |
| |
| // AsmBuf is a simple buffer to assemble variable-length x86 instructions into |
| // and hold assembly state. |
| type AsmBuf struct { |
| buf [100]byte |
| off int |
| rexflag int |
| vexflag bool // Per inst: true for VEX-encoded |
| evexflag bool // Per inst: true for EVEX-encoded |
| rep bool |
| repn bool |
| lock bool |
| |
| evex evexBits // Initialized when evexflag is true |
| } |
| |
| // Put1 appends one byte to the end of the buffer. |
| func (ab *AsmBuf) Put1(x byte) { |
| ab.buf[ab.off] = x |
| ab.off++ |
| } |
| |
| // Put2 appends two bytes to the end of the buffer. |
| func (ab *AsmBuf) Put2(x, y byte) { |
| ab.buf[ab.off+0] = x |
| ab.buf[ab.off+1] = y |
| ab.off += 2 |
| } |
| |
| // Put3 appends three bytes to the end of the buffer. |
| func (ab *AsmBuf) Put3(x, y, z byte) { |
| ab.buf[ab.off+0] = x |
| ab.buf[ab.off+1] = y |
| ab.buf[ab.off+2] = z |
| ab.off += 3 |
| } |
| |
| // Put4 appends four bytes to the end of the buffer. |
| func (ab *AsmBuf) Put4(x, y, z, w byte) { |
| ab.buf[ab.off+0] = x |
| ab.buf[ab.off+1] = y |
| ab.buf[ab.off+2] = z |
| ab.buf[ab.off+3] = w |
| ab.off += 4 |
| } |
| |
| // PutInt16 writes v into the buffer using little-endian encoding. |
| func (ab *AsmBuf) PutInt16(v int16) { |
| ab.buf[ab.off+0] = byte(v) |
| ab.buf[ab.off+1] = byte(v >> 8) |
| ab.off += 2 |
| } |
| |
| // PutInt32 writes v into the buffer using little-endian encoding. |
| func (ab *AsmBuf) PutInt32(v int32) { |
| ab.buf[ab.off+0] = byte(v) |
| ab.buf[ab.off+1] = byte(v >> 8) |
| ab.buf[ab.off+2] = byte(v >> 16) |
| ab.buf[ab.off+3] = byte(v >> 24) |
| ab.off += 4 |
| } |
| |
| // PutInt64 writes v into the buffer using little-endian encoding. |
| func (ab *AsmBuf) PutInt64(v int64) { |
| ab.buf[ab.off+0] = byte(v) |
| ab.buf[ab.off+1] = byte(v >> 8) |
| ab.buf[ab.off+2] = byte(v >> 16) |
| ab.buf[ab.off+3] = byte(v >> 24) |
| ab.buf[ab.off+4] = byte(v >> 32) |
| ab.buf[ab.off+5] = byte(v >> 40) |
| ab.buf[ab.off+6] = byte(v >> 48) |
| ab.buf[ab.off+7] = byte(v >> 56) |
| ab.off += 8 |
| } |
| |
| // Put copies b into the buffer. |
| func (ab *AsmBuf) Put(b []byte) { |
| copy(ab.buf[ab.off:], b) |
| ab.off += len(b) |
| } |
| |
| // PutOpBytesLit writes zero terminated sequence of bytes from op, |
| // starting at specified offset (e.g. z counter value). |
| // Trailing 0 is not written. |
| // |
| // Intended to be used for literal Z cases. |
| // Literal Z cases usually have "Zlit" in their name (Zlit, Zlitr_m, Zlitm_r). |
| func (ab *AsmBuf) PutOpBytesLit(offset int, op *opBytes) { |
| for int(op[offset]) != 0 { |
| ab.Put1(byte(op[offset])) |
| offset++ |
| } |
| } |
| |
| // Insert inserts b at offset i. |
| func (ab *AsmBuf) Insert(i int, b byte) { |
| ab.off++ |
| copy(ab.buf[i+1:ab.off], ab.buf[i:ab.off-1]) |
| ab.buf[i] = b |
| } |
| |
| // Last returns the byte at the end of the buffer. |
| func (ab *AsmBuf) Last() byte { return ab.buf[ab.off-1] } |
| |
| // Len returns the length of the buffer. |
| func (ab *AsmBuf) Len() int { return ab.off } |
| |
| // Bytes returns the contents of the buffer. |
| func (ab *AsmBuf) Bytes() []byte { return ab.buf[:ab.off] } |
| |
| // Reset empties the buffer. |
| func (ab *AsmBuf) Reset() { ab.off = 0 } |
| |
| // At returns the byte at offset i. |
| func (ab *AsmBuf) At(i int) byte { return ab.buf[i] } |
| |
| // asmidx emits SIB byte. |
| func (ab *AsmBuf) asmidx(ctxt *obj.Link, scale int, index int, base int) { |
| var i int |
| |
| // X/Y index register is used in VSIB. |
| switch index { |
| default: |
| goto bad |
| |
| case REG_NONE: |
| i = 4 << 3 |
| goto bas |
| |
| case REG_R8, |
| REG_R9, |
| REG_R10, |
| REG_R11, |
| REG_R12, |
| REG_R13, |
| REG_R14, |
| REG_R15, |
| REG_X8, |
| REG_X9, |
| REG_X10, |
| REG_X11, |
| REG_X12, |
| REG_X13, |
| REG_X14, |
| REG_X15, |
| REG_X16, |
| REG_X17, |
| REG_X18, |
| REG_X19, |
| REG_X20, |
| REG_X21, |
| REG_X22, |
| REG_X23, |
| REG_X24, |
| REG_X25, |
| REG_X26, |
| REG_X27, |
| REG_X28, |
| REG_X29, |
| REG_X30, |
| REG_X31, |
| REG_Y8, |
| REG_Y9, |
| REG_Y10, |
| REG_Y11, |
| REG_Y12, |
| REG_Y13, |
| REG_Y14, |
| REG_Y15, |
| REG_Y16, |
| REG_Y17, |
| REG_Y18, |
| REG_Y19, |
| REG_Y20, |
| REG_Y21, |
| REG_Y22, |
| REG_Y23, |
| REG_Y24, |
| REG_Y25, |
| REG_Y26, |
| REG_Y27, |
| REG_Y28, |
| REG_Y29, |
| REG_Y30, |
| REG_Y31, |
| REG_Z8, |
| REG_Z9, |
| REG_Z10, |
| REG_Z11, |
| REG_Z12, |
| REG_Z13, |
| REG_Z14, |
| REG_Z15, |
| REG_Z16, |
| REG_Z17, |
| REG_Z18, |
| REG_Z19, |
| REG_Z20, |
| REG_Z21, |
| REG_Z22, |
| REG_Z23, |
| REG_Z24, |
| REG_Z25, |
| REG_Z26, |
| REG_Z27, |
| REG_Z28, |
| REG_Z29, |
| REG_Z30, |
| REG_Z31: |
| if ctxt.Arch.Family == sys.I386 { |
| goto bad |
| } |
| fallthrough |
| |
| case REG_AX, |
| REG_CX, |
| REG_DX, |
| REG_BX, |
| REG_BP, |
| REG_SI, |
| REG_DI, |
| REG_X0, |
| REG_X1, |
| REG_X2, |
| REG_X3, |
| REG_X4, |
| REG_X5, |
| REG_X6, |
| REG_X7, |
| REG_Y0, |
| REG_Y1, |
| REG_Y2, |
| REG_Y3, |
| REG_Y4, |
| REG_Y5, |
| REG_Y6, |
| REG_Y7, |
| REG_Z0, |
| REG_Z1, |
| REG_Z2, |
| REG_Z3, |
| REG_Z4, |
| REG_Z5, |
| REG_Z6, |
| REG_Z7: |
| i = reg[index] << 3 |
| } |
| |
| switch scale { |
| default: |
| goto bad |
| |
| case 1: |
| break |
| |
| case 2: |
| i |= 1 << 6 |
| |
| case 4: |
| i |= 2 << 6 |
| |
| case 8: |
| i |= 3 << 6 |
| } |
| |
| bas: |
| switch base { |
| default: |
| goto bad |
| |
| case REG_NONE: // must be mod=00 |
| i |= 5 |
| |
| case REG_R8, |
| REG_R9, |
| REG_R10, |
| REG_R11, |
| REG_R12, |
| REG_R13, |
| REG_R14, |
| REG_R15: |
| if ctxt.Arch.Family == sys.I386 { |
| goto bad |
| } |
| fallthrough |
| |
| case REG_AX, |
| REG_CX, |
| REG_DX, |
| REG_BX, |
| REG_SP, |
| REG_BP, |
| REG_SI, |
| REG_DI: |
| i |= reg[base] |
| } |
| |
| ab.Put1(byte(i)) |
| return |
| |
| bad: |
| ctxt.Diag("asmidx: bad address %d/%d/%d", scale, index, base) |
| ab.Put1(0) |
| } |
| |
| func (ab *AsmBuf) relput4(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, a *obj.Addr) { |
| var rel obj.Reloc |
| |
| v := vaddr(ctxt, p, a, &rel) |
| if rel.Siz != 0 { |
| if rel.Siz != 4 { |
| ctxt.Diag("bad reloc") |
| } |
| r := obj.Addrel(cursym) |
| *r = rel |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| } |
| |
| ab.PutInt32(int32(v)) |
| } |
| |
| func vaddr(ctxt *obj.Link, p *obj.Prog, a *obj.Addr, r *obj.Reloc) int64 { |
| if r != nil { |
| *r = obj.Reloc{} |
| } |
| |
| switch a.Name { |
| case obj.NAME_STATIC, |
| obj.NAME_GOTREF, |
| obj.NAME_EXTERN: |
| s := a.Sym |
| if r == nil { |
| ctxt.Diag("need reloc for %v", obj.Dconv(p, a)) |
| log.Fatalf("reloc") |
| } |
| |
| if a.Name == obj.NAME_GOTREF { |
| r.Siz = 4 |
| r.Type = objabi.R_GOTPCREL |
| } else if useAbs(ctxt, s) { |
| r.Siz = 4 |
| r.Type = objabi.R_ADDR |
| } else { |
| r.Siz = 4 |
| r.Type = objabi.R_PCREL |
| } |
| |
| r.Off = -1 // caller must fill in |
| r.Sym = s |
| r.Add = a.Offset |
| |
| return 0 |
| } |
| |
| if (a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR) && a.Reg == REG_TLS { |
| if r == nil { |
| ctxt.Diag("need reloc for %v", obj.Dconv(p, a)) |
| log.Fatalf("reloc") |
| } |
| |
| if !ctxt.Flag_shared || isAndroid || ctxt.Headtype == objabi.Hdarwin { |
| r.Type = objabi.R_TLS_LE |
| r.Siz = 4 |
| r.Off = -1 // caller must fill in |
| r.Add = a.Offset |
| } |
| return 0 |
| } |
| |
| return a.Offset |
| } |
| |
| func (ab *AsmBuf) asmandsz(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, a *obj.Addr, r int, rex int, m64 int) { |
| var base int |
| var rel obj.Reloc |
| |
| rex &= 0x40 | Rxr |
| if a.Offset != int64(int32(a.Offset)) { |
| // The rules are slightly different for 386 and AMD64, |
| // mostly for historical reasons. We may unify them later, |
| // but it must be discussed beforehand. |
| // |
| // For 64bit mode only LEAL is allowed to overflow. |
| // It's how https://golang.org/cl/59630 made it. |
| // crypto/sha1/sha1block_amd64.s depends on this feature. |
| // |
| // For 32bit mode rules are more permissive. |
| // If offset fits uint32, it's permitted. |
| // This is allowed for assembly that wants to use 32-bit hex |
| // constants, e.g. LEAL 0x99999999(AX), AX. |
| overflowOK := (ctxt.Arch.Family == sys.AMD64 && p.As == ALEAL) || |
| (ctxt.Arch.Family != sys.AMD64 && |
| int64(uint32(a.Offset)) == a.Offset && |
| ab.rexflag&Rxw == 0) |
| if !overflowOK { |
| ctxt.Diag("offset too large in %s", p) |
| } |
| } |
| v := int32(a.Offset) |
| rel.Siz = 0 |
| |
| switch a.Type { |
| case obj.TYPE_ADDR: |
| if a.Name == obj.NAME_NONE { |
| ctxt.Diag("unexpected TYPE_ADDR with NAME_NONE") |
| } |
| if a.Index == REG_TLS { |
| ctxt.Diag("unexpected TYPE_ADDR with index==REG_TLS") |
| } |
| goto bad |
| |
| case obj.TYPE_REG: |
| const regFirst = REG_AL |
| const regLast = REG_Z31 |
| if a.Reg < regFirst || regLast < a.Reg { |
| goto bad |
| } |
| if v != 0 { |
| goto bad |
| } |
| ab.Put1(byte(3<<6 | reg[a.Reg]<<0 | r<<3)) |
| ab.rexflag |= regrex[a.Reg]&(0x40|Rxb) | rex |
| return |
| } |
| |
| if a.Type != obj.TYPE_MEM { |
| goto bad |
| } |
| |
| if a.Index != REG_NONE && a.Index != REG_TLS { |
| base := int(a.Reg) |
| switch a.Name { |
| case obj.NAME_EXTERN, |
| obj.NAME_GOTREF, |
| obj.NAME_STATIC: |
| if !useAbs(ctxt, a.Sym) && ctxt.Arch.Family == sys.AMD64 { |
| goto bad |
| } |
| if ctxt.Arch.Family == sys.I386 && ctxt.Flag_shared { |
| // The base register has already been set. It holds the PC |
| // of this instruction returned by a PC-reading thunk. |
| // See obj6.go:rewriteToPcrel. |
| } else { |
| base = REG_NONE |
| } |
| v = int32(vaddr(ctxt, p, a, &rel)) |
| |
| case obj.NAME_AUTO, |
| obj.NAME_PARAM: |
| base = REG_SP |
| } |
| |
| ab.rexflag |= regrex[int(a.Index)]&Rxx | regrex[base]&Rxb | rex |
| if base == REG_NONE { |
| ab.Put1(byte(0<<6 | 4<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), int(a.Index), base) |
| goto putrelv |
| } |
| |
| if v == 0 && rel.Siz == 0 && base != REG_BP && base != REG_R13 { |
| ab.Put1(byte(0<<6 | 4<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), int(a.Index), base) |
| return |
| } |
| |
| if disp8, ok := toDisp8(v, p, ab); ok && rel.Siz == 0 { |
| ab.Put1(byte(1<<6 | 4<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), int(a.Index), base) |
| ab.Put1(disp8) |
| return |
| } |
| |
| ab.Put1(byte(2<<6 | 4<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), int(a.Index), base) |
| goto putrelv |
| } |
| |
| base = int(a.Reg) |
| switch a.Name { |
| case obj.NAME_STATIC, |
| obj.NAME_GOTREF, |
| obj.NAME_EXTERN: |
| if a.Sym == nil { |
| ctxt.Diag("bad addr: %v", p) |
| } |
| if ctxt.Arch.Family == sys.I386 && ctxt.Flag_shared { |
| // The base register has already been set. It holds the PC |
| // of this instruction returned by a PC-reading thunk. |
| // See obj6.go:rewriteToPcrel. |
| } else { |
| base = REG_NONE |
| } |
| v = int32(vaddr(ctxt, p, a, &rel)) |
| |
| case obj.NAME_AUTO, |
| obj.NAME_PARAM: |
| base = REG_SP |
| } |
| |
| if base == REG_TLS { |
| v = int32(vaddr(ctxt, p, a, &rel)) |
| } |
| |
| ab.rexflag |= regrex[base]&Rxb | rex |
| if base == REG_NONE || (REG_CS <= base && base <= REG_GS) || base == REG_TLS { |
| if (a.Sym == nil || !useAbs(ctxt, a.Sym)) && base == REG_NONE && (a.Name == obj.NAME_STATIC || a.Name == obj.NAME_EXTERN || a.Name == obj.NAME_GOTREF) || ctxt.Arch.Family != sys.AMD64 { |
| if a.Name == obj.NAME_GOTREF && (a.Offset != 0 || a.Index != 0 || a.Scale != 0) { |
| ctxt.Diag("%v has offset against gotref", p) |
| } |
| ab.Put1(byte(0<<6 | 5<<0 | r<<3)) |
| goto putrelv |
| } |
| |
| // temporary |
| ab.Put2( |
| byte(0<<6|4<<0|r<<3), // sib present |
| 0<<6|4<<3|5<<0, // DS:d32 |
| ) |
| goto putrelv |
| } |
| |
| if base == REG_SP || base == REG_R12 { |
| if v == 0 { |
| ab.Put1(byte(0<<6 | reg[base]<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), REG_NONE, base) |
| return |
| } |
| |
| if disp8, ok := toDisp8(v, p, ab); ok { |
| ab.Put1(byte(1<<6 | reg[base]<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), REG_NONE, base) |
| ab.Put1(disp8) |
| return |
| } |
| |
| ab.Put1(byte(2<<6 | reg[base]<<0 | r<<3)) |
| ab.asmidx(ctxt, int(a.Scale), REG_NONE, base) |
| goto putrelv |
| } |
| |
| if REG_AX <= base && base <= REG_R15 { |
| if a.Index == REG_TLS && !ctxt.Flag_shared && !isAndroid { |
| rel = obj.Reloc{} |
| rel.Type = objabi.R_TLS_LE |
| rel.Siz = 4 |
| rel.Sym = nil |
| rel.Add = int64(v) |
| v = 0 |
| } |
| |
| if v == 0 && rel.Siz == 0 && base != REG_BP && base != REG_R13 { |
| ab.Put1(byte(0<<6 | reg[base]<<0 | r<<3)) |
| return |
| } |
| |
| if disp8, ok := toDisp8(v, p, ab); ok && rel.Siz == 0 { |
| ab.Put2(byte(1<<6|reg[base]<<0|r<<3), disp8) |
| return |
| } |
| |
| ab.Put1(byte(2<<6 | reg[base]<<0 | r<<3)) |
| goto putrelv |
| } |
| |
| goto bad |
| |
| putrelv: |
| if rel.Siz != 0 { |
| if rel.Siz != 4 { |
| ctxt.Diag("bad rel") |
| goto bad |
| } |
| |
| r := obj.Addrel(cursym) |
| *r = rel |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| } |
| |
| ab.PutInt32(v) |
| return |
| |
| bad: |
| ctxt.Diag("asmand: bad address %v", obj.Dconv(p, a)) |
| } |
| |
| func (ab *AsmBuf) asmand(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, a *obj.Addr, ra *obj.Addr) { |
| ab.asmandsz(ctxt, cursym, p, a, reg[ra.Reg], regrex[ra.Reg], 0) |
| } |
| |
| func (ab *AsmBuf) asmando(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog, a *obj.Addr, o int) { |
| ab.asmandsz(ctxt, cursym, p, a, o, 0, 0) |
| } |
| |
| func bytereg(a *obj.Addr, t *uint8) { |
| if a.Type == obj.TYPE_REG && a.Index == REG_NONE && (REG_AX <= a.Reg && a.Reg <= REG_R15) { |
| a.Reg += REG_AL - REG_AX |
| *t = 0 |
| } |
| } |
| |
| func unbytereg(a *obj.Addr, t *uint8) { |
| if a.Type == obj.TYPE_REG && a.Index == REG_NONE && (REG_AL <= a.Reg && a.Reg <= REG_R15B) { |
| a.Reg += REG_AX - REG_AL |
| *t = 0 |
| } |
| } |
| |
| const ( |
| movLit uint8 = iota // Like Zlit |
| movRegMem |
| movMemReg |
| movRegMem2op |
| movMemReg2op |
| movFullPtr // Load full pointer, trash heap (unsupported) |
| movDoubleShift |
| movTLSReg |
| ) |
| |
| var ymovtab = []movtab{ |
| // push |
| {APUSHL, Ycs, Ynone, Ynone, movLit, [4]uint8{0x0e, 0}}, |
| {APUSHL, Yss, Ynone, Ynone, movLit, [4]uint8{0x16, 0}}, |
| {APUSHL, Yds, Ynone, Ynone, movLit, [4]uint8{0x1e, 0}}, |
| {APUSHL, Yes, Ynone, Ynone, movLit, [4]uint8{0x06, 0}}, |
| {APUSHL, Yfs, Ynone, Ynone, movLit, [4]uint8{0x0f, 0xa0, 0}}, |
| {APUSHL, Ygs, Ynone, Ynone, movLit, [4]uint8{0x0f, 0xa8, 0}}, |
| {APUSHQ, Yfs, Ynone, Ynone, movLit, [4]uint8{0x0f, 0xa0, 0}}, |
| {APUSHQ, Ygs, Ynone, Ynone, movLit, [4]uint8{0x0f, 0xa8, 0}}, |
| {APUSHW, Ycs, Ynone, Ynone, movLit, [4]uint8{Pe, 0x0e, 0}}, |
| {APUSHW, Yss, Ynone, Ynone, movLit, [4]uint8{Pe, 0x16, 0}}, |
| {APUSHW, Yds, Ynone, Ynone, movLit, [4]uint8{Pe, 0x1e, 0}}, |
| {APUSHW, Yes, Ynone, Ynone, movLit, [4]uint8{Pe, 0x06, 0}}, |
| {APUSHW, Yfs, Ynone, Ynone, movLit, [4]uint8{Pe, 0x0f, 0xa0, 0}}, |
| {APUSHW, Ygs, Ynone, Ynone, movLit, [4]uint8{Pe, 0x0f, 0xa8, 0}}, |
| |
| // pop |
| {APOPL, Ynone, Ynone, Yds, movLit, [4]uint8{0x1f, 0}}, |
| {APOPL, Ynone, Ynone, Yes, movLit, [4]uint8{0x07, 0}}, |
| {APOPL, Ynone, Ynone, Yss, movLit, [4]uint8{0x17, 0}}, |
| {APOPL, Ynone, Ynone, Yfs, movLit, [4]uint8{0x0f, 0xa1, 0}}, |
| {APOPL, Ynone, Ynone, Ygs, movLit, [4]uint8{0x0f, 0xa9, 0}}, |
| {APOPQ, Ynone, Ynone, Yfs, movLit, [4]uint8{0x0f, 0xa1, 0}}, |
| {APOPQ, Ynone, Ynone, Ygs, movLit, [4]uint8{0x0f, 0xa9, 0}}, |
| {APOPW, Ynone, Ynone, Yds, movLit, [4]uint8{Pe, 0x1f, 0}}, |
| {APOPW, Ynone, Ynone, Yes, movLit, [4]uint8{Pe, 0x07, 0}}, |
| {APOPW, Ynone, Ynone, Yss, movLit, [4]uint8{Pe, 0x17, 0}}, |
| {APOPW, Ynone, Ynone, Yfs, movLit, [4]uint8{Pe, 0x0f, 0xa1, 0}}, |
| {APOPW, Ynone, Ynone, Ygs, movLit, [4]uint8{Pe, 0x0f, 0xa9, 0}}, |
| |
| // mov seg |
| {AMOVW, Yes, Ynone, Yml, movRegMem, [4]uint8{0x8c, 0, 0, 0}}, |
| {AMOVW, Ycs, Ynone, Yml, movRegMem, [4]uint8{0x8c, 1, 0, 0}}, |
| {AMOVW, Yss, Ynone, Yml, movRegMem, [4]uint8{0x8c, 2, 0, 0}}, |
| {AMOVW, Yds, Ynone, Yml, movRegMem, [4]uint8{0x8c, 3, 0, 0}}, |
| {AMOVW, Yfs, Ynone, Yml, movRegMem, [4]uint8{0x8c, 4, 0, 0}}, |
| {AMOVW, Ygs, Ynone, Yml, movRegMem, [4]uint8{0x8c, 5, 0, 0}}, |
| {AMOVW, Yml, Ynone, Yes, movMemReg, [4]uint8{0x8e, 0, 0, 0}}, |
| {AMOVW, Yml, Ynone, Ycs, movMemReg, [4]uint8{0x8e, 1, 0, 0}}, |
| {AMOVW, Yml, Ynone, Yss, movMemReg, [4]uint8{0x8e, 2, 0, 0}}, |
| {AMOVW, Yml, Ynone, Yds, movMemReg, [4]uint8{0x8e, 3, 0, 0}}, |
| {AMOVW, Yml, Ynone, Yfs, movMemReg, [4]uint8{0x8e, 4, 0, 0}}, |
| {AMOVW, Yml, Ynone, Ygs, movMemReg, [4]uint8{0x8e, 5, 0, 0}}, |
| |
| // mov cr |
| {AMOVL, Ycr0, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 0, 0}}, |
| {AMOVL, Ycr2, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 2, 0}}, |
| {AMOVL, Ycr3, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 3, 0}}, |
| {AMOVL, Ycr4, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 4, 0}}, |
| {AMOVL, Ycr8, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 8, 0}}, |
| {AMOVQ, Ycr0, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 0, 0}}, |
| {AMOVQ, Ycr2, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 2, 0}}, |
| {AMOVQ, Ycr3, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 3, 0}}, |
| {AMOVQ, Ycr4, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 4, 0}}, |
| {AMOVQ, Ycr8, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x20, 8, 0}}, |
| {AMOVL, Yrl, Ynone, Ycr0, movMemReg2op, [4]uint8{0x0f, 0x22, 0, 0}}, |
| {AMOVL, Yrl, Ynone, Ycr2, movMemReg2op, [4]uint8{0x0f, 0x22, 2, 0}}, |
| {AMOVL, Yrl, Ynone, Ycr3, movMemReg2op, [4]uint8{0x0f, 0x22, 3, 0}}, |
| {AMOVL, Yrl, Ynone, Ycr4, movMemReg2op, [4]uint8{0x0f, 0x22, 4, 0}}, |
| {AMOVL, Yrl, Ynone, Ycr8, movMemReg2op, [4]uint8{0x0f, 0x22, 8, 0}}, |
| {AMOVQ, Yrl, Ynone, Ycr0, movMemReg2op, [4]uint8{0x0f, 0x22, 0, 0}}, |
| {AMOVQ, Yrl, Ynone, Ycr2, movMemReg2op, [4]uint8{0x0f, 0x22, 2, 0}}, |
| {AMOVQ, Yrl, Ynone, Ycr3, movMemReg2op, [4]uint8{0x0f, 0x22, 3, 0}}, |
| {AMOVQ, Yrl, Ynone, Ycr4, movMemReg2op, [4]uint8{0x0f, 0x22, 4, 0}}, |
| {AMOVQ, Yrl, Ynone, Ycr8, movMemReg2op, [4]uint8{0x0f, 0x22, 8, 0}}, |
| |
| // mov dr |
| {AMOVL, Ydr0, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 0, 0}}, |
| {AMOVL, Ydr6, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 6, 0}}, |
| {AMOVL, Ydr7, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 7, 0}}, |
| {AMOVQ, Ydr0, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 0, 0}}, |
| {AMOVQ, Ydr2, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 2, 0}}, |
| {AMOVQ, Ydr3, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 3, 0}}, |
| {AMOVQ, Ydr6, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 6, 0}}, |
| {AMOVQ, Ydr7, Ynone, Yrl, movRegMem2op, [4]uint8{0x0f, 0x21, 7, 0}}, |
| {AMOVL, Yrl, Ynone, Ydr0, movMemReg2op, [4]uint8{0x0f, 0x23, 0, 0}}, |
| {AMOVL, Yrl, Ynone, Ydr6, movMemReg2op, [4]uint8{0x0f, 0x23, 6, 0}}, |
| {AMOVL, Yrl, Ynone, Ydr7, movMemReg2op, [4]uint8{0x0f, 0x23, 7, 0}}, |
| {AMOVQ, Yrl, Ynone, Ydr0, movMemReg2op, [4]uint8{0x0f, 0x23, 0, 0}}, |
| {AMOVQ, Yrl, Ynone, Ydr2, movMemReg2op, [4]uint8{0x0f, 0x23, 2, 0}}, |
| {AMOVQ, Yrl, Ynone, Ydr3, movMemReg2op, [4]uint8{0x0f, 0x23, 3, 0}}, |
| {AMOVQ, Yrl, Ynone, Ydr6, movMemReg2op, [4]uint8{0x0f, 0x23, 6, 0}}, |
| {AMOVQ, Yrl, Ynone, Ydr7, movMemReg2op, [4]uint8{0x0f, 0x23, 7, 0}}, |
| |
| // mov tr |
| {AMOVL, Ytr6, Ynone, Yml, movRegMem2op, [4]uint8{0x0f, 0x24, 6, 0}}, |
| {AMOVL, Ytr7, Ynone, Yml, movRegMem2op, [4]uint8{0x0f, 0x24, 7, 0}}, |
| {AMOVL, Yml, Ynone, Ytr6, movMemReg2op, [4]uint8{0x0f, 0x26, 6, 0xff}}, |
| {AMOVL, Yml, Ynone, Ytr7, movMemReg2op, [4]uint8{0x0f, 0x26, 7, 0xff}}, |
| |
| // lgdt, sgdt, lidt, sidt |
| {AMOVL, Ym, Ynone, Ygdtr, movMemReg2op, [4]uint8{0x0f, 0x01, 2, 0}}, |
| {AMOVL, Ygdtr, Ynone, Ym, movRegMem2op, [4]uint8{0x0f, 0x01, 0, 0}}, |
| {AMOVL, Ym, Ynone, Yidtr, movMemReg2op, [4]uint8{0x0f, 0x01, 3, 0}}, |
| {AMOVL, Yidtr, Ynone, Ym, movRegMem2op, [4]uint8{0x0f, 0x01, 1, 0}}, |
| {AMOVQ, Ym, Ynone, Ygdtr, movMemReg2op, [4]uint8{0x0f, 0x01, 2, 0}}, |
| {AMOVQ, Ygdtr, Ynone, Ym, movRegMem2op, [4]uint8{0x0f, 0x01, 0, 0}}, |
| {AMOVQ, Ym, Ynone, Yidtr, movMemReg2op, [4]uint8{0x0f, 0x01, 3, 0}}, |
| {AMOVQ, Yidtr, Ynone, Ym, movRegMem2op, [4]uint8{0x0f, 0x01, 1, 0}}, |
| |
| // lldt, sldt |
| {AMOVW, Yml, Ynone, Yldtr, movMemReg2op, [4]uint8{0x0f, 0x00, 2, 0}}, |
| {AMOVW, Yldtr, Ynone, Yml, movRegMem2op, [4]uint8{0x0f, 0x00, 0, 0}}, |
| |
| // lmsw, smsw |
| {AMOVW, Yml, Ynone, Ymsw, movMemReg2op, [4]uint8{0x0f, 0x01, 6, 0}}, |
| {AMOVW, Ymsw, Ynone, Yml, movRegMem2op, [4]uint8{0x0f, 0x01, 4, 0}}, |
| |
| // ltr, str |
| {AMOVW, Yml, Ynone, Ytask, movMemReg2op, [4]uint8{0x0f, 0x00, 3, 0}}, |
| {AMOVW, Ytask, Ynone, Yml, movRegMem2op, [4]uint8{0x0f, 0x00, 1, 0}}, |
| |
| /* load full pointer - unsupported |
| {AMOVL, Yml, Ycol, movFullPtr, [4]uint8{0, 0, 0, 0}}, |
| {AMOVW, Yml, Ycol, movFullPtr, [4]uint8{Pe, 0, 0, 0}}, |
| */ |
| |
| // double shift |
| {ASHLL, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{0xa4, 0xa5, 0, 0}}, |
| {ASHLL, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{0xa4, 0xa5, 0, 0}}, |
| {ASHLL, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{0xa4, 0xa5, 0, 0}}, |
| {ASHRL, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{0xac, 0xad, 0, 0}}, |
| {ASHRL, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{0xac, 0xad, 0, 0}}, |
| {ASHRL, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{0xac, 0xad, 0, 0}}, |
| {ASHLQ, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xa4, 0xa5, 0}}, |
| {ASHLQ, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xa4, 0xa5, 0}}, |
| {ASHLQ, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xa4, 0xa5, 0}}, |
| {ASHRQ, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xac, 0xad, 0}}, |
| {ASHRQ, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xac, 0xad, 0}}, |
| {ASHRQ, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{Pw, 0xac, 0xad, 0}}, |
| {ASHLW, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xa4, 0xa5, 0}}, |
| {ASHLW, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xa4, 0xa5, 0}}, |
| {ASHLW, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xa4, 0xa5, 0}}, |
| {ASHRW, Yi8, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xac, 0xad, 0}}, |
| {ASHRW, Ycl, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xac, 0xad, 0}}, |
| {ASHRW, Ycx, Yrl, Yml, movDoubleShift, [4]uint8{Pe, 0xac, 0xad, 0}}, |
| |
| // load TLS base |
| {AMOVL, Ytls, Ynone, Yrl, movTLSReg, [4]uint8{0, 0, 0, 0}}, |
| {AMOVQ, Ytls, Ynone, Yrl, movTLSReg, [4]uint8{0, 0, 0, 0}}, |
| {0, 0, 0, 0, 0, [4]uint8{}}, |
| } |
| |
| func isax(a *obj.Addr) bool { |
| switch a.Reg { |
| case REG_AX, REG_AL, REG_AH: |
| return true |
| } |
| |
| if a.Index == REG_AX { |
| return true |
| } |
| return false |
| } |
| |
| func subreg(p *obj.Prog, from int, to int) { |
| if false { /* debug['Q'] */ |
| fmt.Printf("\n%v\ts/%v/%v/\n", p, rconv(from), rconv(to)) |
| } |
| |
| if int(p.From.Reg) == from { |
| p.From.Reg = int16(to) |
| p.Ft = 0 |
| } |
| |
| if int(p.To.Reg) == from { |
| p.To.Reg = int16(to) |
| p.Tt = 0 |
| } |
| |
| if int(p.From.Index) == from { |
| p.From.Index = int16(to) |
| p.Ft = 0 |
| } |
| |
| if int(p.To.Index) == from { |
| p.To.Index = int16(to) |
| p.Tt = 0 |
| } |
| |
| if false { /* debug['Q'] */ |
| fmt.Printf("%v\n", p) |
| } |
| } |
| |
| func (ab *AsmBuf) mediaop(ctxt *obj.Link, o *Optab, op int, osize int, z int) int { |
| switch op { |
| case Pm, Pe, Pf2, Pf3: |
| if osize != 1 { |
| if op != Pm { |
| ab.Put1(byte(op)) |
| } |
| ab.Put1(Pm) |
| z++ |
| op = int(o.op[z]) |
| break |
| } |
| fallthrough |
| |
| default: |
| if ab.Len() == 0 || ab.Last() != Pm { |
| ab.Put1(Pm) |
| } |
| } |
| |
| ab.Put1(byte(op)) |
| return z |
| } |
| |
| var bpduff1 = []byte{ |
| 0x48, 0x89, 0x6c, 0x24, 0xf0, // MOVQ BP, -16(SP) |
| 0x48, 0x8d, 0x6c, 0x24, 0xf0, // LEAQ -16(SP), BP |
| } |
| |
| var bpduff2 = []byte{ |
| 0x48, 0x8b, 0x6d, 0x00, // MOVQ 0(BP), BP |
| } |
| |
| // asmevex emits EVEX pregis and opcode byte. |
| // In addition to asmvex r/m, vvvv and reg fields also requires optional |
| // K-masking register. |
| // |
| // Expects asmbuf.evex to be properly initialized. |
| func (ab *AsmBuf) asmevex(ctxt *obj.Link, p *obj.Prog, rm, v, r, k *obj.Addr) { |
| ab.evexflag = true |
| evex := ab.evex |
| |
| rexR := byte(1) |
| evexR := byte(1) |
| rexX := byte(1) |
| rexB := byte(1) |
| if r != nil { |
| if regrex[r.Reg]&Rxr != 0 { |
| rexR = 0 // "ModR/M.reg" selector 4th bit. |
| } |
| if regrex[r.Reg]&RxrEvex != 0 { |
| evexR = 0 // "ModR/M.reg" selector 5th bit. |
| } |
| } |
| if rm != nil { |
| if rm.Index == REG_NONE && regrex[rm.Reg]&RxrEvex != 0 { |
| rexX = 0 |
| } else if regrex[rm.Index]&Rxx != 0 { |
| rexX = 0 |
| } |
| if regrex[rm.Reg]&Rxb != 0 { |
| rexB = 0 |
| } |
| } |
| // P0 = [R][X][B][R'][00][mm] |
| p0 := (rexR << 7) | |
| (rexX << 6) | |
| (rexB << 5) | |
| (evexR << 4) | |
| (0 << 2) | |
| (evex.M() << 0) |
| |
| vexV := byte(0) |
| if v != nil { |
| // 4bit-wide reg index. |
| vexV = byte(reg[v.Reg]|(regrex[v.Reg]&Rxr)<<1) & 0xF |
| } |
| vexV ^= 0x0F |
| // P1 = [W][vvvv][1][pp] |
| p1 := (evex.W() << 7) | |
| (vexV << 3) | |
| (1 << 2) | |
| (evex.P() << 0) |
| |
| suffix := evexSuffixMap[p.Scond] |
| evexZ := byte(0) |
| evexLL := evex.L() |
| evexB := byte(0) |
| evexV := byte(1) |
| evexA := byte(0) |
| if suffix.zeroing { |
| if !evex.ZeroingEnabled() { |
| ctxt.Diag("unsupported zeroing: %v", p) |
| } |
| evexZ = 1 |
| } |
| switch { |
| case suffix.rounding != rcUnset: |
| if rm != nil && rm.Type == obj.TYPE_MEM { |
| ctxt.Diag("illegal rounding with memory argument: %v", p) |
| } else if !evex.RoundingEnabled() { |
| ctxt.Diag("unsupported rounding: %v", p) |
| } |
| evexB = 1 |
| evexLL = suffix.rounding |
| case suffix.broadcast: |
| if rm == nil || rm.Type != obj.TYPE_MEM { |
| ctxt.Diag("illegal broadcast without memory argument: %v", p) |
| } else if !evex.BroadcastEnabled() { |
| ctxt.Diag("unsupported broadcast: %v", p) |
| } |
| evexB = 1 |
| case suffix.sae: |
| if rm != nil && rm.Type == obj.TYPE_MEM { |
| ctxt.Diag("illegal SAE with memory argument: %v", p) |
| } else if !evex.SaeEnabled() { |
| ctxt.Diag("unsupported SAE: %v", p) |
| } |
| evexB = 1 |
| } |
| if rm != nil && regrex[rm.Index]&RxrEvex != 0 { |
| evexV = 0 |
| } else if v != nil && regrex[v.Reg]&RxrEvex != 0 { |
| evexV = 0 // VSR selector 5th bit. |
| } |
| if k != nil { |
| evexA = byte(reg[k.Reg]) |
| } |
| // P2 = [z][L'L][b][V'][aaa] |
| p2 := (evexZ << 7) | |
| (evexLL << 5) | |
| (evexB << 4) | |
| (evexV << 3) | |
| (evexA << 0) |
| |
| const evexEscapeByte = 0x62 |
| ab.Put4(evexEscapeByte, p0, p1, p2) |
| ab.Put1(evex.opcode) |
| } |
| |
| // Emit VEX prefix and opcode byte. |
| // The three addresses are the r/m, vvvv, and reg fields. |
| // The reg and rm arguments appear in the same order as the |
| // arguments to asmand, which typically follows the call to asmvex. |
| // The final two arguments are the VEX prefix (see encoding above) |
| // and the opcode byte. |
| // For details about vex prefix see: |
| // https://en.wikipedia.org/wiki/VEX_prefix#Technical_description |
| func (ab *AsmBuf) asmvex(ctxt *obj.Link, rm, v, r *obj.Addr, vex, opcode uint8) { |
| ab.vexflag = true |
| rexR := 0 |
| if r != nil { |
| rexR = regrex[r.Reg] & Rxr |
| } |
| rexB := 0 |
| rexX := 0 |
| if rm != nil { |
| rexB = regrex[rm.Reg] & Rxb |
| rexX = regrex[rm.Index] & Rxx |
| } |
| vexM := (vex >> 3) & 0x7 |
| vexWLP := vex & 0x87 |
| vexV := byte(0) |
| if v != nil { |
| vexV = byte(reg[v.Reg]|(regrex[v.Reg]&Rxr)<<1) & 0xF |
| } |
| vexV ^= 0xF |
| if vexM == 1 && (rexX|rexB) == 0 && vex&vexW1 == 0 { |
| // Can use 2-byte encoding. |
| ab.Put2(0xc5, byte(rexR<<5)^0x80|vexV<<3|vexWLP) |
| } else { |
| // Must use 3-byte encoding. |
| ab.Put3(0xc4, |
| (byte(rexR|rexX|rexB)<<5)^0xE0|vexM, |
| vexV<<3|vexWLP, |
| ) |
| } |
| ab.Put1(opcode) |
| } |
| |
| // regIndex returns register index that fits in 5 bits. |
| // |
| // R : 3 bit | legacy instructions | N/A |
| // [R/V]EX.R : 1 bit | REX / VEX extension bit | Rxr |
| // EVEX.R : 1 bit | EVEX extension bit | RxrEvex |
| // |
| // Examples: |
| // REG_Z30 => 30 |
| // REG_X15 => 15 |
| // REG_R9 => 9 |
| // REG_AX => 0 |
| // |
| func regIndex(r int16) int { |
| lower3bits := reg[r] |
| high4bit := regrex[r] & Rxr << 1 |
| high5bit := regrex[r] & RxrEvex << 0 |
| return lower3bits | high4bit | high5bit |
| } |
| |
| // avx2gatherValid reports whether p satisfies AVX2 gather constraints. |
| // Reports errors via ctxt. |
| func avx2gatherValid(ctxt *obj.Link, p *obj.Prog) bool { |
| // If any pair of the index, mask, or destination registers |
| // are the same, illegal instruction trap (#UD) is triggered. |
| index := regIndex(p.GetFrom3().Index) |
| mask := regIndex(p.From.Reg) |
| dest := regIndex(p.To.Reg) |
| if dest == mask || dest == index || mask == index { |
| ctxt.Diag("mask, index, and destination registers should be distinct: %v", p) |
| return false |
| } |
| |
| return true |
| } |
| |
| // avx512gatherValid reports whether p satisfies AVX512 gather constraints. |
| // Reports errors via ctxt. |
| func avx512gatherValid(ctxt *obj.Link, p *obj.Prog) bool { |
| // Illegal instruction trap (#UD) is triggered if the destination vector |
| // register is the same as index vector in VSIB. |
| index := regIndex(p.From.Index) |
| dest := regIndex(p.To.Reg) |
| if dest == index { |
| ctxt.Diag("index and destination registers should be distinct: %v", p) |
| return false |
| } |
| |
| return true |
| } |
| |
| func (ab *AsmBuf) doasm(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) { |
| o := opindex[p.As&obj.AMask] |
| |
| if o == nil { |
| ctxt.Diag("asmins: missing op %v", p) |
| return |
| } |
| |
| if pre := prefixof(ctxt, &p.From); pre != 0 { |
| ab.Put1(byte(pre)) |
| } |
| if pre := prefixof(ctxt, &p.To); pre != 0 { |
| ab.Put1(byte(pre)) |
| } |
| |
| // Checks to warn about instruction/arguments combinations that |
| // will unconditionally trigger illegal instruction trap (#UD). |
| switch p.As { |
| case AVGATHERDPD, |
| AVGATHERQPD, |
| AVGATHERDPS, |
| AVGATHERQPS, |
| AVPGATHERDD, |
| AVPGATHERQD, |
| AVPGATHERDQ, |
| AVPGATHERQQ: |
| // AVX512 gather requires explicit K mask. |
| if p.GetFrom3().Reg >= REG_K0 && p.GetFrom3().Reg <= REG_K7 { |
| if !avx512gatherValid(ctxt, p) { |
| return |
| } |
| } else { |
| if !avx2gatherValid(ctxt, p) { |
| return |
| } |
| } |
| } |
| |
| if p.Ft == 0 { |
| p.Ft = uint8(oclass(ctxt, p, &p.From)) |
| } |
| if p.Tt == 0 { |
| p.Tt = uint8(oclass(ctxt, p, &p.To)) |
| } |
| |
| ft := int(p.Ft) * Ymax |
| var f3t int |
| tt := int(p.Tt) * Ymax |
| |
| xo := obj.Bool2int(o.op[0] == 0x0f) |
| z := 0 |
| var a *obj.Addr |
| var l int |
| var op int |
| var q *obj.Prog |
| var r *obj.Reloc |
| var rel obj.Reloc |
| var v int64 |
| |
| args := make([]int, 0, argListMax) |
| if ft != Ynone*Ymax { |
| args = append(args, ft) |
| } |
| for i := range p.RestArgs { |
| args = append(args, oclass(ctxt, p, &p.RestArgs[i])*Ymax) |
| } |
| if tt != Ynone*Ymax { |
| args = append(args, tt) |
| } |
| |
| for _, yt := range o.ytab { |
| // ytab matching is purely args-based, |
| // but AVX512 suffixes like "Z" or "RU_SAE" will |
| // add EVEX-only filter that will reject non-EVEX matches. |
| // |
| // Consider "VADDPD.BCST 2032(DX), X0, X0". |
| // Without this rule, operands will lead to VEX-encoded form |
| // and produce "c5b15813" encoding. |
| if !yt.match(args) { |
| // "xo" is always zero for VEX/EVEX encoded insts. |
| z += int(yt.zoffset) + xo |
| } else { |
| if p.Scond != 0 && !evexZcase(yt.zcase) { |
| // Do not signal error and continue to search |
| // for matching EVEX-encoded form. |
| z += int(yt.zoffset) |
| continue |
| } |
| |
| switch o.prefix { |
| case Px1: // first option valid only in 32-bit mode |
| if ctxt.Arch.Family == sys.AMD64 && z == 0 { |
| z += int(yt.zoffset) + xo |
| continue |
| } |
| case Pq: // 16 bit escape and opcode escape |
| ab.Put2(Pe, Pm) |
| |
| case Pq3: // 16 bit escape and opcode escape + REX.W |
| ab.rexflag |= Pw |
| ab.Put2(Pe, Pm) |
| |
| case Pq4: // 66 0F 38 |
| ab.Put3(0x66, 0x0F, 0x38) |
| |
| case Pq4w: // 66 0F 38 + REX.W |
| ab.rexflag |= Pw |
| ab.Put3(0x66, 0x0F, 0x38) |
| |
| case Pq5: // F3 0F 38 |
| ab.Put3(0xF3, 0x0F, 0x38) |
| |
| case Pq5w: // F3 0F 38 + REX.W |
| ab.rexflag |= Pw |
| ab.Put3(0xF3, 0x0F, 0x38) |
| |
| case Pf2, // xmm opcode escape |
| Pf3: |
| ab.Put2(o.prefix, Pm) |
| |
| case Pef3: |
| ab.Put3(Pe, Pf3, Pm) |
| |
| case Pfw: // xmm opcode escape + REX.W |
| ab.rexflag |= Pw |
| ab.Put2(Pf3, Pm) |
| |
| case Pm: // opcode escape |
| ab.Put1(Pm) |
| |
| case Pe: // 16 bit escape |
| ab.Put1(Pe) |
| |
| case Pw: // 64-bit escape |
| if ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal 64: %v", p) |
| } |
| ab.rexflag |= Pw |
| |
| case Pw8: // 64-bit escape if z >= 8 |
| if z >= 8 { |
| if ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal 64: %v", p) |
| } |
| ab.rexflag |= Pw |
| } |
| |
| case Pb: // botch |
| if ctxt.Arch.Family != sys.AMD64 && (isbadbyte(&p.From) || isbadbyte(&p.To)) { |
| goto bad |
| } |
| // NOTE(rsc): This is probably safe to do always, |
| // but when enabled it chooses different encodings |
| // than the old cmd/internal/obj/i386 code did, |
| // which breaks our "same bits out" checks. |
| // In particular, CMPB AX, $0 encodes as 80 f8 00 |
| // in the original obj/i386, and it would encode |
| // (using a valid, shorter form) as 3c 00 if we enabled |
| // the call to bytereg here. |
| if ctxt.Arch.Family == sys.AMD64 { |
| bytereg(&p.From, &p.Ft) |
| bytereg(&p.To, &p.Tt) |
| } |
| |
| case P32: // 32 bit but illegal if 64-bit mode |
| if ctxt.Arch.Family == sys.AMD64 { |
| ctxt.Diag("asmins: illegal in 64-bit mode: %v", p) |
| } |
| |
| case Py: // 64-bit only, no prefix |
| if ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal in %d-bit mode: %v", ctxt.Arch.RegSize*8, p) |
| } |
| |
| case Py1: // 64-bit only if z < 1, no prefix |
| if z < 1 && ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal in %d-bit mode: %v", ctxt.Arch.RegSize*8, p) |
| } |
| |
| case Py3: // 64-bit only if z < 3, no prefix |
| if z < 3 && ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal in %d-bit mode: %v", ctxt.Arch.RegSize*8, p) |
| } |
| } |
| |
| if z >= len(o.op) { |
| log.Fatalf("asmins bad table %v", p) |
| } |
| op = int(o.op[z]) |
| if op == 0x0f { |
| ab.Put1(byte(op)) |
| z++ |
| op = int(o.op[z]) |
| } |
| |
| switch yt.zcase { |
| default: |
| ctxt.Diag("asmins: unknown z %d %v", yt.zcase, p) |
| return |
| |
| case Zpseudo: |
| break |
| |
| case Zlit: |
| ab.PutOpBytesLit(z, &o.op) |
| |
| case Zlitr_m: |
| ab.PutOpBytesLit(z, &o.op) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zlitm_r: |
| ab.PutOpBytesLit(z, &o.op) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zlit_m_r: |
| ab.PutOpBytesLit(z, &o.op) |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| |
| case Zmb_r: |
| bytereg(&p.From, &p.Ft) |
| fallthrough |
| |
| case Zm_r: |
| ab.Put1(byte(op)) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Z_m_r: |
| ab.Put1(byte(op)) |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| |
| case Zm2_r: |
| ab.Put2(byte(op), o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zm_r_xm: |
| ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zm_r_xm_nr: |
| ab.rexflag = 0 |
| ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zm_r_i_xm: |
| ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmand(ctxt, cursym, p, &p.From, p.GetFrom3()) |
| ab.Put1(byte(p.To.Offset)) |
| |
| case Zibm_r, Zibr_m: |
| ab.PutOpBytesLit(z, &o.op) |
| if yt.zcase == Zibr_m { |
| ab.asmand(ctxt, cursym, p, &p.To, p.GetFrom3()) |
| } else { |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| } |
| switch { |
| default: |
| ab.Put1(byte(p.From.Offset)) |
| case yt.args[0] == Yi32 && o.prefix == Pe: |
| ab.PutInt16(int16(p.From.Offset)) |
| case yt.args[0] == Yi32: |
| ab.PutInt32(int32(p.From.Offset)) |
| } |
| |
| case Zaut_r: |
| ab.Put1(0x8d) // leal |
| if p.From.Type != obj.TYPE_ADDR { |
| ctxt.Diag("asmins: Zaut sb type ADDR") |
| } |
| p.From.Type = obj.TYPE_MEM |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| p.From.Type = obj.TYPE_ADDR |
| |
| case Zm_o: |
| ab.Put1(byte(op)) |
| ab.asmando(ctxt, cursym, p, &p.From, int(o.op[z+1])) |
| |
| case Zr_m: |
| ab.Put1(byte(op)) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zvex: |
| ab.asmvex(ctxt, &p.From, p.GetFrom3(), &p.To, o.op[z], o.op[z+1]) |
| |
| case Zvex_rm_v_r: |
| ab.asmvex(ctxt, &p.From, p.GetFrom3(), &p.To, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zvex_rm_v_ro: |
| ab.asmvex(ctxt, &p.From, p.GetFrom3(), &p.To, o.op[z], o.op[z+1]) |
| ab.asmando(ctxt, cursym, p, &p.From, int(o.op[z+2])) |
| |
| case Zvex_i_rm_vo: |
| ab.asmvex(ctxt, p.GetFrom3(), &p.To, nil, o.op[z], o.op[z+1]) |
| ab.asmando(ctxt, cursym, p, p.GetFrom3(), int(o.op[z+2])) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zvex_i_r_v: |
| ab.asmvex(ctxt, p.GetFrom3(), &p.To, nil, o.op[z], o.op[z+1]) |
| regnum := byte(0x7) |
| if p.GetFrom3().Reg >= REG_X0 && p.GetFrom3().Reg <= REG_X15 { |
| regnum &= byte(p.GetFrom3().Reg - REG_X0) |
| } else { |
| regnum &= byte(p.GetFrom3().Reg - REG_Y0) |
| } |
| ab.Put1(o.op[z+2] | regnum) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zvex_i_rm_v_r: |
| imm, from, from3, to := unpackOps4(p) |
| ab.asmvex(ctxt, from, from3, to, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, from, to) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zvex_i_rm_r: |
| ab.asmvex(ctxt, p.GetFrom3(), nil, &p.To, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zvex_v_rm_r: |
| ab.asmvex(ctxt, p.GetFrom3(), &p.From, &p.To, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| |
| case Zvex_r_v_rm: |
| ab.asmvex(ctxt, &p.To, p.GetFrom3(), &p.From, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zvex_rm_r_vo: |
| ab.asmvex(ctxt, &p.From, &p.To, p.GetFrom3(), o.op[z], o.op[z+1]) |
| ab.asmando(ctxt, cursym, p, &p.From, int(o.op[z+2])) |
| |
| case Zvex_i_r_rm: |
| ab.asmvex(ctxt, &p.To, nil, p.GetFrom3(), o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, &p.To, p.GetFrom3()) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zvex_hr_rm_v_r: |
| hr, from, from3, to := unpackOps4(p) |
| ab.asmvex(ctxt, from, from3, to, o.op[z], o.op[z+1]) |
| ab.asmand(ctxt, cursym, p, from, to) |
| ab.Put1(byte(regIndex(hr.Reg) << 4)) |
| |
| case Zevex_k_rmo: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.To, nil, nil, &p.From) |
| ab.asmando(ctxt, cursym, p, &p.To, int(o.op[z+3])) |
| |
| case Zevex_i_rm_vo: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, p.GetFrom3(), &p.To, nil, nil) |
| ab.asmando(ctxt, cursym, p, p.GetFrom3(), int(o.op[z+3])) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zevex_i_rm_k_vo: |
| imm, from, kmask, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, from, to, nil, kmask) |
| ab.asmando(ctxt, cursym, p, from, int(o.op[z+3])) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zevex_i_r_rm: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.To, nil, p.GetFrom3(), nil) |
| ab.asmand(ctxt, cursym, p, &p.To, p.GetFrom3()) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zevex_i_r_k_rm: |
| imm, from, kmask, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, to, nil, from, kmask) |
| ab.asmand(ctxt, cursym, p, to, from) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zevex_i_rm_r: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, p.GetFrom3(), nil, &p.To, nil) |
| ab.asmand(ctxt, cursym, p, p.GetFrom3(), &p.To) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case Zevex_i_rm_k_r: |
| imm, from, kmask, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, from, nil, to, kmask) |
| ab.asmand(ctxt, cursym, p, from, to) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zevex_i_rm_v_r: |
| imm, from, from3, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, from, from3, to, nil) |
| ab.asmand(ctxt, cursym, p, from, to) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zevex_i_rm_v_k_r: |
| imm, from, from3, kmask, to := unpackOps5(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, from, from3, to, kmask) |
| ab.asmand(ctxt, cursym, p, from, to) |
| ab.Put1(byte(imm.Offset)) |
| |
| case Zevex_r_v_rm: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.To, p.GetFrom3(), &p.From, nil) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zevex_rm_v_r: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.From, p.GetFrom3(), &p.To, nil) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zevex_rm_k_r: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.From, nil, &p.To, p.GetFrom3()) |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case Zevex_r_k_rm: |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, &p.To, nil, &p.From, p.GetFrom3()) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zevex_rm_v_k_r: |
| from, from3, kmask, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, from, from3, to, kmask) |
| ab.asmand(ctxt, cursym, p, from, to) |
| |
| case Zevex_r_v_k_rm: |
| from, from3, kmask, to := unpackOps4(p) |
| ab.evex = newEVEXBits(z, &o.op) |
| ab.asmevex(ctxt, p, to, from3, from, kmask) |
| ab.asmand(ctxt, cursym, p, to, from) |
| |
| case Zr_m_xm: |
| ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zr_m_xm_nr: |
| ab.rexflag = 0 |
| ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.From) |
| |
| case Zo_m: |
| ab.Put1(byte(op)) |
| ab.asmando(ctxt, cursym, p, &p.To, int(o.op[z+1])) |
| |
| case Zcallindreg: |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc) |
| r.Type = objabi.R_CALLIND |
| r.Siz = 0 |
| fallthrough |
| |
| case Zo_m64: |
| ab.Put1(byte(op)) |
| ab.asmandsz(ctxt, cursym, p, &p.To, int(o.op[z+1]), 0, 1) |
| |
| case Zm_ibo: |
| ab.Put1(byte(op)) |
| ab.asmando(ctxt, cursym, p, &p.From, int(o.op[z+1])) |
| ab.Put1(byte(vaddr(ctxt, p, &p.To, nil))) |
| |
| case Zibo_m: |
| ab.Put1(byte(op)) |
| ab.asmando(ctxt, cursym, p, &p.To, int(o.op[z+1])) |
| ab.Put1(byte(vaddr(ctxt, p, &p.From, nil))) |
| |
| case Zibo_m_xm: |
| z = ab.mediaop(ctxt, o, op, int(yt.zoffset), z) |
| ab.asmando(ctxt, cursym, p, &p.To, int(o.op[z+1])) |
| ab.Put1(byte(vaddr(ctxt, p, &p.From, nil))) |
| |
| case Z_ib, Zib_: |
| if yt.zcase == Zib_ { |
| a = &p.From |
| } else { |
| a = &p.To |
| } |
| ab.Put1(byte(op)) |
| if p.As == AXABORT { |
| ab.Put1(o.op[z+1]) |
| } |
| ab.Put1(byte(vaddr(ctxt, p, a, nil))) |
| |
| case Zib_rp: |
| ab.rexflag |= regrex[p.To.Reg] & (Rxb | 0x40) |
| ab.Put2(byte(op+reg[p.To.Reg]), byte(vaddr(ctxt, p, &p.From, nil))) |
| |
| case Zil_rp: |
| ab.rexflag |= regrex[p.To.Reg] & Rxb |
| ab.Put1(byte(op + reg[p.To.Reg])) |
| if o.prefix == Pe { |
| v = vaddr(ctxt, p, &p.From, nil) |
| ab.PutInt16(int16(v)) |
| } else { |
| ab.relput4(ctxt, cursym, p, &p.From) |
| } |
| |
| case Zo_iw: |
| ab.Put1(byte(op)) |
| if p.From.Type != obj.TYPE_NONE { |
| v = vaddr(ctxt, p, &p.From, nil) |
| ab.PutInt16(int16(v)) |
| } |
| |
| case Ziq_rp: |
| v = vaddr(ctxt, p, &p.From, &rel) |
| l = int(v >> 32) |
| if l == 0 && rel.Siz != 8 { |
| ab.rexflag &^= (0x40 | Rxw) |
| |
| ab.rexflag |= regrex[p.To.Reg] & Rxb |
| ab.Put1(byte(0xb8 + reg[p.To.Reg])) |
| if rel.Type != 0 { |
| r = obj.Addrel(cursym) |
| *r = rel |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| } |
| |
| ab.PutInt32(int32(v)) |
| } else if l == -1 && uint64(v)&(uint64(1)<<31) != 0 { // sign extend |
| ab.Put1(0xc7) |
| ab.asmando(ctxt, cursym, p, &p.To, 0) |
| |
| ab.PutInt32(int32(v)) // need all 8 |
| } else { |
| ab.rexflag |= regrex[p.To.Reg] & Rxb |
| ab.Put1(byte(op + reg[p.To.Reg])) |
| if rel.Type != 0 { |
| r = obj.Addrel(cursym) |
| *r = rel |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| } |
| |
| ab.PutInt64(v) |
| } |
| |
| case Zib_rr: |
| ab.Put1(byte(op)) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.To) |
| ab.Put1(byte(vaddr(ctxt, p, &p.From, nil))) |
| |
| case Z_il, Zil_: |
| if yt.zcase == Zil_ { |
| a = &p.From |
| } else { |
| a = &p.To |
| } |
| ab.Put1(byte(op)) |
| if o.prefix == Pe { |
| v = vaddr(ctxt, p, a, nil) |
| ab.PutInt16(int16(v)) |
| } else { |
| ab.relput4(ctxt, cursym, p, a) |
| } |
| |
| case Zm_ilo, Zilo_m: |
| ab.Put1(byte(op)) |
| if yt.zcase == Zilo_m { |
| a = &p.From |
| ab.asmando(ctxt, cursym, p, &p.To, int(o.op[z+1])) |
| } else { |
| a = &p.To |
| ab.asmando(ctxt, cursym, p, &p.From, int(o.op[z+1])) |
| } |
| |
| if o.prefix == Pe { |
| v = vaddr(ctxt, p, a, nil) |
| ab.PutInt16(int16(v)) |
| } else { |
| ab.relput4(ctxt, cursym, p, a) |
| } |
| |
| case Zil_rr: |
| ab.Put1(byte(op)) |
| ab.asmand(ctxt, cursym, p, &p.To, &p.To) |
| if o.prefix == Pe { |
| v = vaddr(ctxt, p, &p.From, nil) |
| ab.PutInt16(int16(v)) |
| } else { |
| ab.relput4(ctxt, cursym, p, &p.From) |
| } |
| |
| case Z_rp: |
| ab.rexflag |= regrex[p.To.Reg] & (Rxb | 0x40) |
| ab.Put1(byte(op + reg[p.To.Reg])) |
| |
| case Zrp_: |
| ab.rexflag |= regrex[p.From.Reg] & (Rxb | 0x40) |
| ab.Put1(byte(op + reg[p.From.Reg])) |
| |
| case Zcallcon, Zjmpcon: |
| if yt.zcase == Zcallcon { |
| ab.Put1(byte(op)) |
| } else { |
| ab.Put1(o.op[z+1]) |
| } |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Type = objabi.R_PCREL |
| r.Siz = 4 |
| r.Add = p.To.Offset |
| ab.PutInt32(0) |
| |
| case Zcallind: |
| ab.Put2(byte(op), o.op[z+1]) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| if ctxt.Arch.Family == sys.AMD64 { |
| r.Type = objabi.R_PCREL |
| } else { |
| r.Type = objabi.R_ADDR |
| } |
| r.Siz = 4 |
| r.Add = p.To.Offset |
| r.Sym = p.To.Sym |
| ab.PutInt32(0) |
| |
| case Zcall, Zcallduff: |
| if p.To.Sym == nil { |
| ctxt.Diag("call without target") |
| ctxt.DiagFlush() |
| log.Fatalf("bad code") |
| } |
| |
| if yt.zcase == Zcallduff && ctxt.Flag_dynlink { |
| ctxt.Diag("directly calling duff when dynamically linking Go") |
| } |
| |
| if ctxt.Framepointer_enabled && yt.zcase == Zcallduff && ctxt.Arch.Family == sys.AMD64 { |
| // Maintain BP around call, since duffcopy/duffzero can't do it |
| // (the call jumps into the middle of the function). |
| // This makes it possible to see call sites for duffcopy/duffzero in |
| // BP-based profiling tools like Linux perf (which is the |
| // whole point of obj.Framepointer_enabled). |
| // MOVQ BP, -16(SP) |
| // LEAQ -16(SP), BP |
| ab.Put(bpduff1) |
| } |
| ab.Put1(byte(op)) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Sym = p.To.Sym |
| r.Add = p.To.Offset |
| r.Type = objabi.R_CALL |
| r.Siz = 4 |
| ab.PutInt32(0) |
| |
| if ctxt.Framepointer_enabled && yt.zcase == Zcallduff && ctxt.Arch.Family == sys.AMD64 { |
| // Pop BP pushed above. |
| // MOVQ 0(BP), BP |
| ab.Put(bpduff2) |
| } |
| |
| // TODO: jump across functions needs reloc |
| case Zbr, Zjmp, Zloop: |
| if p.As == AXBEGIN { |
| ab.Put1(byte(op)) |
| } |
| if p.To.Sym != nil { |
| if yt.zcase != Zjmp { |
| ctxt.Diag("branch to ATEXT") |
| ctxt.DiagFlush() |
| log.Fatalf("bad code") |
| } |
| |
| ab.Put1(o.op[z+1]) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Sym = p.To.Sym |
| // Note: R_CALL instead of R_PCREL. R_CALL is more permissive in that |
| // it can point to a trampoline instead of the destination itself. |
| r.Type = objabi.R_CALL |
| r.Siz = 4 |
| ab.PutInt32(0) |
| break |
| } |
| |
| // Assumes q is in this function. |
| // TODO: Check in input, preserve in brchain. |
| |
| // Fill in backward jump now. |
| q = p.Pcond |
| |
| if q == nil { |
| ctxt.Diag("jmp/branch/loop without target") |
| ctxt.DiagFlush() |
| log.Fatalf("bad code") |
| } |
| |
| if p.Back&branchBackwards != 0 { |
| v = q.Pc - (p.Pc + 2) |
| if v >= -128 && p.As != AXBEGIN { |
| if p.As == AJCXZL { |
| ab.Put1(0x67) |
| } |
| ab.Put2(byte(op), byte(v)) |
| } else if yt.zcase == Zloop { |
| ctxt.Diag("loop too far: %v", p) |
| } else { |
| v -= 5 - 2 |
| if p.As == AXBEGIN { |
| v-- |
| } |
| if yt.zcase == Zbr { |
| ab.Put1(0x0f) |
| v-- |
| } |
| |
| ab.Put1(o.op[z+1]) |
| ab.PutInt32(int32(v)) |
| } |
| |
| break |
| } |
| |
| // Annotate target; will fill in later. |
| p.Forwd = q.Rel |
| |
| q.Rel = p |
| if p.Back&branchShort != 0 && p.As != AXBEGIN { |
| if p.As == AJCXZL { |
| ab.Put1(0x67) |
| } |
| ab.Put2(byte(op), 0) |
| } else if yt.zcase == Zloop { |
| ctxt.Diag("loop too far: %v", p) |
| } else { |
| if yt.zcase == Zbr { |
| ab.Put1(0x0f) |
| } |
| ab.Put1(o.op[z+1]) |
| ab.PutInt32(0) |
| } |
| |
| case Zbyte: |
| v = vaddr(ctxt, p, &p.From, &rel) |
| if rel.Siz != 0 { |
| rel.Siz = uint8(op) |
| r = obj.Addrel(cursym) |
| *r = rel |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| } |
| |
| ab.Put1(byte(v)) |
| if op > 1 { |
| ab.Put1(byte(v >> 8)) |
| if op > 2 { |
| ab.PutInt16(int16(v >> 16)) |
| if op > 4 { |
| ab.PutInt32(int32(v >> 32)) |
| } |
| } |
| } |
| } |
| |
| return |
| } |
| } |
| f3t = Ynone * Ymax |
| if p.GetFrom3() != nil { |
| f3t = oclass(ctxt, p, p.GetFrom3()) * Ymax |
| } |
| for mo := ymovtab; mo[0].as != 0; mo = mo[1:] { |
| var pp obj.Prog |
| var t []byte |
| if p.As == mo[0].as { |
| if ycover[ft+int(mo[0].ft)] != 0 && ycover[f3t+int(mo[0].f3t)] != 0 && ycover[tt+int(mo[0].tt)] != 0 { |
| t = mo[0].op[:] |
| switch mo[0].code { |
| default: |
| ctxt.Diag("asmins: unknown mov %d %v", mo[0].code, p) |
| |
| case movLit: |
| for z = 0; t[z] != 0; z++ { |
| ab.Put1(t[z]) |
| } |
| |
| case movRegMem: |
| ab.Put1(t[0]) |
| ab.asmando(ctxt, cursym, p, &p.To, int(t[1])) |
| |
| case movMemReg: |
| ab.Put1(t[0]) |
| ab.asmando(ctxt, cursym, p, &p.From, int(t[1])) |
| |
| case movRegMem2op: // r,m - 2op |
| ab.Put2(t[0], t[1]) |
| ab.asmando(ctxt, cursym, p, &p.To, int(t[2])) |
| ab.rexflag |= regrex[p.From.Reg] & (Rxr | 0x40) |
| |
| case movMemReg2op: |
| ab.Put2(t[0], t[1]) |
| ab.asmando(ctxt, cursym, p, &p.From, int(t[2])) |
| ab.rexflag |= regrex[p.To.Reg] & (Rxr | 0x40) |
| |
| case movFullPtr: |
| if t[0] != 0 { |
| ab.Put1(t[0]) |
| } |
| switch p.To.Index { |
| default: |
| goto bad |
| |
| case REG_DS: |
| ab.Put1(0xc5) |
| |
| case REG_SS: |
| ab.Put2(0x0f, 0xb2) |
| |
| case REG_ES: |
| ab.Put1(0xc4) |
| |
| case REG_FS: |
| ab.Put2(0x0f, 0xb4) |
| |
| case REG_GS: |
| ab.Put2(0x0f, 0xb5) |
| } |
| |
| ab.asmand(ctxt, cursym, p, &p.From, &p.To) |
| |
| case movDoubleShift: |
| if t[0] == Pw { |
| if ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal 64: %v", p) |
| } |
| ab.rexflag |= Pw |
| t = t[1:] |
| } else if t[0] == Pe { |
| ab.Put1(Pe) |
| t = t[1:] |
| } |
| |
| switch p.From.Type { |
| default: |
| goto bad |
| |
| case obj.TYPE_CONST: |
| ab.Put2(0x0f, t[0]) |
| ab.asmandsz(ctxt, cursym, p, &p.To, reg[p.GetFrom3().Reg], regrex[p.GetFrom3().Reg], 0) |
| ab.Put1(byte(p.From.Offset)) |
| |
| case obj.TYPE_REG: |
| switch p.From.Reg { |
| default: |
| goto bad |
| |
| case REG_CL, REG_CX: |
| ab.Put2(0x0f, t[1]) |
| ab.asmandsz(ctxt, cursym, p, &p.To, reg[p.GetFrom3().Reg], regrex[p.GetFrom3().Reg], 0) |
| } |
| } |
| |
| // NOTE: The systems listed here are the ones that use the "TLS initial exec" model, |
| // where you load the TLS base register into a register and then index off that |
| // register to access the actual TLS variables. Systems that allow direct TLS access |
| // are handled in prefixof above and should not be listed here. |
| case movTLSReg: |
| if ctxt.Arch.Family == sys.AMD64 && p.As != AMOVQ || ctxt.Arch.Family == sys.I386 && p.As != AMOVL { |
| ctxt.Diag("invalid load of TLS: %v", p) |
| } |
| |
| if ctxt.Arch.Family == sys.I386 { |
| // NOTE: The systems listed here are the ones that use the "TLS initial exec" model, |
| // where you load the TLS base register into a register and then index off that |
| // register to access the actual TLS variables. Systems that allow direct TLS access |
| // are handled in prefixof above and should not be listed here. |
| switch ctxt.Headtype { |
| default: |
| log.Fatalf("unknown TLS base location for %v", ctxt.Headtype) |
| |
| case objabi.Hlinux, objabi.Hfreebsd: |
| if ctxt.Flag_shared { |
| // Note that this is not generating the same insns as the other cases. |
| // MOV TLS, dst |
| // becomes |
| // call __x86.get_pc_thunk.dst |
| // movl (gotpc + g@gotntpoff)(dst), dst |
| // which is encoded as |
| // call __x86.get_pc_thunk.dst |
| // movq 0(dst), dst |
| // and R_CALL & R_TLS_IE relocs. This all assumes the only tls variable we access |
| // is g, which we can't check here, but will when we assemble the second |
| // instruction. |
| dst := p.To.Reg |
| ab.Put1(0xe8) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Type = objabi.R_CALL |
| r.Siz = 4 |
| r.Sym = ctxt.Lookup("__x86.get_pc_thunk." + strings.ToLower(rconv(int(dst)))) |
| ab.PutInt32(0) |
| |
| ab.Put2(0x8B, byte(2<<6|reg[dst]|(reg[dst]<<3))) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Type = objabi.R_TLS_IE |
| r.Siz = 4 |
| r.Add = 2 |
| ab.PutInt32(0) |
| } else { |
| // ELF TLS base is 0(GS). |
| pp.From = p.From |
| |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Reg = REG_GS |
| pp.From.Offset = 0 |
| pp.From.Index = REG_NONE |
| pp.From.Scale = 0 |
| ab.Put2(0x65, // GS |
| 0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| } |
| case objabi.Hplan9: |
| pp.From = obj.Addr{} |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Name = obj.NAME_EXTERN |
| pp.From.Sym = plan9privates |
| pp.From.Offset = 0 |
| pp.From.Index = REG_NONE |
| ab.Put1(0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| |
| case objabi.Hwindows: |
| // Windows TLS base is always 0x14(FS). |
| pp.From = p.From |
| |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Reg = REG_FS |
| pp.From.Offset = 0x14 |
| pp.From.Index = REG_NONE |
| pp.From.Scale = 0 |
| ab.Put2(0x64, // FS |
| 0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| } |
| break |
| } |
| |
| switch ctxt.Headtype { |
| default: |
| log.Fatalf("unknown TLS base location for %v", ctxt.Headtype) |
| |
| case objabi.Hlinux, objabi.Hfreebsd: |
| if !ctxt.Flag_shared { |
| log.Fatalf("unknown TLS base location for linux/freebsd without -shared") |
| } |
| // Note that this is not generating the same insn as the other cases. |
| // MOV TLS, R_to |
| // becomes |
| // movq g@gottpoff(%rip), R_to |
| // which is encoded as |
| // movq 0(%rip), R_to |
| // and a R_TLS_IE reloc. This all assumes the only tls variable we access |
| // is g, which we can't check here, but will when we assemble the second |
| // instruction. |
| ab.rexflag = Pw | (regrex[p.To.Reg] & Rxr) |
| |
| ab.Put2(0x8B, byte(0x05|(reg[p.To.Reg]<<3))) |
| r = obj.Addrel(cursym) |
| r.Off = int32(p.Pc + int64(ab.Len())) |
| r.Type = objabi.R_TLS_IE |
| r.Siz = 4 |
| r.Add = -4 |
| ab.PutInt32(0) |
| |
| case objabi.Hplan9: |
| pp.From = obj.Addr{} |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Name = obj.NAME_EXTERN |
| pp.From.Sym = plan9privates |
| pp.From.Offset = 0 |
| pp.From.Index = REG_NONE |
| ab.rexflag |= Pw |
| ab.Put1(0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| |
| case objabi.Hsolaris: // TODO(rsc): Delete Hsolaris from list. Should not use this code. See progedit in obj6.c. |
| // TLS base is 0(FS). |
| pp.From = p.From |
| |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Name = obj.NAME_NONE |
| pp.From.Reg = REG_NONE |
| pp.From.Offset = 0 |
| pp.From.Index = REG_NONE |
| pp.From.Scale = 0 |
| ab.rexflag |= Pw |
| ab.Put2(0x64, // FS |
| 0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| |
| case objabi.Hwindows: |
| // Windows TLS base is always 0x28(GS). |
| pp.From = p.From |
| |
| pp.From.Type = obj.TYPE_MEM |
| pp.From.Name = obj.NAME_NONE |
| pp.From.Reg = REG_GS |
| pp.From.Offset = 0x28 |
| pp.From.Index = REG_NONE |
| pp.From.Scale = 0 |
| ab.rexflag |= Pw |
| ab.Put2(0x65, // GS |
| 0x8B) |
| ab.asmand(ctxt, cursym, p, &pp.From, &p.To) |
| } |
| } |
| return |
| } |
| } |
| } |
| goto bad |
| |
| bad: |
| if ctxt.Arch.Family != sys.AMD64 { |
| // here, the assembly has failed. |
| // if it's a byte instruction that has |
| // unaddressable registers, try to |
| // exchange registers and reissue the |
| // instruction with the operands renamed. |
| pp := *p |
| |
| unbytereg(&pp.From, &pp.Ft) |
| unbytereg(&pp.To, &pp.Tt) |
| |
| z := int(p.From.Reg) |
| if p.From.Type == obj.TYPE_REG && z >= REG_BP && z <= REG_DI { |
| // TODO(rsc): Use this code for x86-64 too. It has bug fixes not present in the amd64 code base. |
| // For now, different to keep bit-for-bit compatibility. |
| if ctxt.Arch.Family == sys.I386 { |
| breg := byteswapreg(ctxt, &p.To) |
| if breg != REG_AX { |
| ab.Put1(0x87) // xchg lhs,bx |
| ab.asmando(ctxt, cursym, p, &p.From, reg[breg]) |
| subreg(&pp, z, breg) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(0x87) // xchg lhs,bx |
| ab.asmando(ctxt, cursym, p, &p.From, reg[breg]) |
| } else { |
| ab.Put1(byte(0x90 + reg[z])) // xchg lsh,ax |
| subreg(&pp, z, REG_AX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(byte(0x90 + reg[z])) // xchg lsh,ax |
| } |
| return |
| } |
| |
| if isax(&p.To) || p.To.Type == obj.TYPE_NONE { |
| // We certainly don't want to exchange |
| // with AX if the op is MUL or DIV. |
| ab.Put1(0x87) // xchg lhs,bx |
| ab.asmando(ctxt, cursym, p, &p.From, reg[REG_BX]) |
| subreg(&pp, z, REG_BX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(0x87) // xchg lhs,bx |
| ab.asmando(ctxt, cursym, p, &p.From, reg[REG_BX]) |
| } else { |
| ab.Put1(byte(0x90 + reg[z])) // xchg lsh,ax |
| subreg(&pp, z, REG_AX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(byte(0x90 + reg[z])) // xchg lsh,ax |
| } |
| return |
| } |
| |
| z = int(p.To.Reg) |
| if p.To.Type == obj.TYPE_REG && z >= REG_BP && z <= REG_DI { |
| // TODO(rsc): Use this code for x86-64 too. It has bug fixes not present in the amd64 code base. |
| // For now, different to keep bit-for-bit compatibility. |
| if ctxt.Arch.Family == sys.I386 { |
| breg := byteswapreg(ctxt, &p.From) |
| if breg != REG_AX { |
| ab.Put1(0x87) //xchg rhs,bx |
| ab.asmando(ctxt, cursym, p, &p.To, reg[breg]) |
| subreg(&pp, z, breg) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(0x87) // xchg rhs,bx |
| ab.asmando(ctxt, cursym, p, &p.To, reg[breg]) |
| } else { |
| ab.Put1(byte(0x90 + reg[z])) // xchg rsh,ax |
| subreg(&pp, z, REG_AX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(byte(0x90 + reg[z])) // xchg rsh,ax |
| } |
| return |
| } |
| |
| if isax(&p.From) { |
| ab.Put1(0x87) // xchg rhs,bx |
| ab.asmando(ctxt, cursym, p, &p.To, reg[REG_BX]) |
| subreg(&pp, z, REG_BX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(0x87) // xchg rhs,bx |
| ab.asmando(ctxt, cursym, p, &p.To, reg[REG_BX]) |
| } else { |
| ab.Put1(byte(0x90 + reg[z])) // xchg rsh,ax |
| subreg(&pp, z, REG_AX) |
| ab.doasm(ctxt, cursym, &pp) |
| ab.Put1(byte(0x90 + reg[z])) // xchg rsh,ax |
| } |
| return |
| } |
| } |
| |
| ctxt.Diag("invalid instruction: %v", p) |
| } |
| |
| // byteswapreg returns a byte-addressable register (AX, BX, CX, DX) |
| // which is not referenced in a. |
| // If a is empty, it returns BX to account for MULB-like instructions |
| // that might use DX and AX. |
| func byteswapreg(ctxt *obj.Link, a *obj.Addr) int { |
| cana, canb, canc, cand := true, true, true, true |
| if a.Type == obj.TYPE_NONE { |
| cana, cand = false, false |
| } |
| |
| if a.Type == obj.TYPE_REG || ((a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR) && a.Name == obj.NAME_NONE) { |
| switch a.Reg { |
| case REG_NONE: |
| cana, cand = false, false |
| case REG_AX, REG_AL, REG_AH: |
| cana = false |
| case REG_BX, REG_BL, REG_BH: |
| canb = false |
| case REG_CX, REG_CL, REG_CH: |
| canc = false |
| case REG_DX, REG_DL, REG_DH: |
| cand = false |
| } |
| } |
| |
| if a.Type == obj.TYPE_MEM || a.Type == obj.TYPE_ADDR { |
| switch a.Index { |
| case REG_AX: |
| cana = false |
| case REG_BX: |
| canb = false |
| case REG_CX: |
| canc = false |
| case REG_DX: |
| cand = false |
| } |
| } |
| |
| switch { |
| case cana: |
| return REG_AX |
| case canb: |
| return REG_BX |
| case canc: |
| return REG_CX |
| case cand: |
| return REG_DX |
| default: |
| ctxt.Diag("impossible byte register") |
| ctxt.DiagFlush() |
| log.Fatalf("bad code") |
| return 0 |
| } |
| } |
| |
| func isbadbyte(a *obj.Addr) bool { |
| return a.Type == obj.TYPE_REG && (REG_BP <= a.Reg && a.Reg <= REG_DI || REG_BPB <= a.Reg && a.Reg <= REG_DIB) |
| } |
| |
| func (ab *AsmBuf) asmins(ctxt *obj.Link, cursym *obj.LSym, p *obj.Prog) { |
| ab.Reset() |
| |
| ab.rexflag = 0 |
| ab.vexflag = false |
| ab.evexflag = false |
| mark := ab.Len() |
| ab.doasm(ctxt, cursym, p) |
| if ab.rexflag != 0 && !ab.vexflag && !ab.evexflag { |
| // as befits the whole approach of the architecture, |
| // the rex prefix must appear before the first opcode byte |
| // (and thus after any 66/67/f2/f3/26/2e/3e prefix bytes, but |
| // before the 0f opcode escape!), or it might be ignored. |
| // note that the handbook often misleadingly shows 66/f2/f3 in `opcode'. |
| if ctxt.Arch.Family != sys.AMD64 { |
| ctxt.Diag("asmins: illegal in mode %d: %v (%d %d)", ctxt.Arch.RegSize*8, p, p.Ft, p.Tt) |
| } |
| n := ab.Len() |
| var np int |
| for np = mark; np < n; np++ { |
| c := ab.At(np) |
| if c != 0xf2 && c != 0xf3 && (c < 0x64 || c > 0x67) && c != 0x2e && c != 0x3e && c != 0x26 { |
| break |
| } |
| } |
| ab.Insert(np, byte(0x40|ab.rexflag)) |
| } |
| |
| n := ab.Len() |
| for i := len(cursym.R) - 1; i >= 0; i-- { |
| r := &cursym.R[i] |
| if int64(r.Off) < p.Pc { |
| break |
| } |
| if ab.rexflag != 0 && !ab.vexflag && !ab.evexflag { |
| r.Off++ |
| } |
| if r.Type == objabi.R_PCREL { |
| if ctxt.Arch.Family == sys.AMD64 || p.As == obj.AJMP || p.As == obj.ACALL { |
| // PC-relative addressing is relative to the end of the instruction, |
| // but the relocations applied by the linker are relative to the end |
| // of the relocation. Because immediate instruction |
| // arguments can follow the PC-relative memory reference in the |
| // instruction encoding, the two may not coincide. In this case, |
| // adjust addend so that linker can keep relocating relative to the |
| // end of the relocation. |
| r.Add -= p.Pc + int64(n) - (int64(r.Off) + int64(r.Siz)) |
| } else if ctxt.Arch.Family == sys.I386 { |
| // On 386 PC-relative addressing (for non-call/jmp instructions) |
| // assumes that the previous instruction loaded the PC of the end |
| // of that instruction into CX, so the adjustment is relative to |
| // that. |
| r.Add += int64(r.Off) - p.Pc + int64(r.Siz) |
| } |
| } |
| if r.Type == objabi.R_GOTPCREL && ctxt.Arch.Family == sys.I386 { |
| // On 386, R_GOTPCREL makes the same assumptions as R_PCREL. |
| r.Add += int64(r.Off) - p.Pc + int64(r.Siz) |
| } |
| |
| } |
| } |
| |
| // unpackOps4 extracts 4 operands from p. |
| func unpackOps4(p *obj.Prog) (arg0, arg1, arg2, dst *obj.Addr) { |
| return &p.From, &p.RestArgs[0], &p.RestArgs[1], &p.To |
| } |
| |
| // unpackOps5 extracts 5 operands from p. |
| func unpackOps5(p *obj.Prog) (arg0, arg1, arg2, arg3, dst *obj.Addr) { |
| return &p.From, &p.RestArgs[0], &p.RestArgs[1], &p.RestArgs[2], &p.To |
| } |
