| // Copyright 2009 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| #include "zasm_GOOS_GOARCH.h" |
| #include "funcdata.h" |
| #include "textflag.h" |
| |
| TEXT runtime·rt0_go(SB),NOSPLIT,$0 |
| // copy arguments forward on an even stack |
| MOVQ DI, AX // argc |
| MOVQ SI, BX // argv |
| SUBQ $(4*8+7), SP // 2args 2auto |
| ANDQ $~15, SP |
| MOVQ AX, 16(SP) |
| MOVQ BX, 24(SP) |
| |
| // create istack out of the given (operating system) stack. |
| // _cgo_init may update stackguard. |
| MOVQ $runtime·g0(SB), DI |
| LEAQ (-64*1024+104)(SP), BX |
| MOVQ BX, g_stackguard0(DI) |
| MOVQ BX, g_stackguard1(DI) |
| MOVQ BX, (g_stack+stack_lo)(DI) |
| MOVQ SP, (g_stack+stack_hi)(DI) |
| |
| // find out information about the processor we're on |
| MOVQ $0, AX |
| CPUID |
| CMPQ AX, $0 |
| JE nocpuinfo |
| MOVQ $1, AX |
| CPUID |
| MOVL CX, runtime·cpuid_ecx(SB) |
| MOVL DX, runtime·cpuid_edx(SB) |
| nocpuinfo: |
| |
| // if there is an _cgo_init, call it. |
| MOVQ _cgo_init(SB), AX |
| TESTQ AX, AX |
| JZ needtls |
| // g0 already in DI |
| MOVQ DI, CX // Win64 uses CX for first parameter |
| MOVQ $setg_gcc<>(SB), SI |
| CALL AX |
| |
| // update stackguard after _cgo_init |
| MOVQ $runtime·g0(SB), CX |
| MOVQ (g_stack+stack_lo)(CX), AX |
| ADDQ $const_StackGuard, AX |
| MOVQ AX, g_stackguard0(CX) |
| MOVQ AX, g_stackguard1(CX) |
| |
| CMPL runtime·iswindows(SB), $0 |
| JEQ ok |
| needtls: |
| // skip TLS setup on Plan 9 |
| CMPL runtime·isplan9(SB), $1 |
| JEQ ok |
| // skip TLS setup on Solaris |
| CMPL runtime·issolaris(SB), $1 |
| JEQ ok |
| |
| LEAQ runtime·tls0(SB), DI |
| CALL runtime·settls(SB) |
| |
| // store through it, to make sure it works |
| get_tls(BX) |
| MOVQ $0x123, g(BX) |
| MOVQ runtime·tls0(SB), AX |
| CMPQ AX, $0x123 |
| JEQ 2(PC) |
| MOVL AX, 0 // abort |
| ok: |
| // set the per-goroutine and per-mach "registers" |
| get_tls(BX) |
| LEAQ runtime·g0(SB), CX |
| MOVQ CX, g(BX) |
| LEAQ runtime·m0(SB), AX |
| |
| // save m->g0 = g0 |
| MOVQ CX, m_g0(AX) |
| // save m0 to g0->m |
| MOVQ AX, g_m(CX) |
| |
| CLD // convention is D is always left cleared |
| CALL runtime·check(SB) |
| |
| MOVL 16(SP), AX // copy argc |
| MOVL AX, 0(SP) |
| MOVQ 24(SP), AX // copy argv |
| MOVQ AX, 8(SP) |
| CALL runtime·args(SB) |
| CALL runtime·osinit(SB) |
| CALL runtime·schedinit(SB) |
| |
| // create a new goroutine to start program |
| MOVQ $runtime·main·f(SB), BP // entry |
| PUSHQ BP |
| PUSHQ $0 // arg size |
| CALL runtime·newproc(SB) |
| POPQ AX |
| POPQ AX |
| |
| // start this M |
| CALL runtime·mstart(SB) |
| |
| MOVL $0xf1, 0xf1 // crash |
| RET |
| |
| DATA runtime·main·f+0(SB)/8,$runtime·main(SB) |
| GLOBL runtime·main·f(SB),RODATA,$8 |
| |
| TEXT runtime·breakpoint(SB),NOSPLIT,$0-0 |
| BYTE $0xcc |
| RET |
| |
| TEXT runtime·asminit(SB),NOSPLIT,$0-0 |
| // No per-thread init. |
| RET |
| |
| /* |
| * go-routine |
| */ |
| |
| // void gosave(Gobuf*) |
| // save state in Gobuf; setjmp |
| TEXT runtime·gosave(SB), NOSPLIT, $0-8 |
| MOVQ buf+0(FP), AX // gobuf |
| LEAQ buf+0(FP), BX // caller's SP |
| MOVQ BX, gobuf_sp(AX) |
| MOVQ 0(SP), BX // caller's PC |
| MOVQ BX, gobuf_pc(AX) |
| MOVQ $0, gobuf_ret(AX) |
| MOVQ $0, gobuf_ctxt(AX) |
| get_tls(CX) |
| MOVQ g(CX), BX |
| MOVQ BX, gobuf_g(AX) |
| RET |
| |
| // void gogo(Gobuf*) |
| // restore state from Gobuf; longjmp |
| TEXT runtime·gogo(SB), NOSPLIT, $0-8 |
| MOVQ buf+0(FP), BX // gobuf |
| MOVQ gobuf_g(BX), DX |
| MOVQ 0(DX), CX // make sure g != nil |
| get_tls(CX) |
| MOVQ DX, g(CX) |
| MOVQ gobuf_sp(BX), SP // restore SP |
| MOVQ gobuf_ret(BX), AX |
| MOVQ gobuf_ctxt(BX), DX |
| MOVQ $0, gobuf_sp(BX) // clear to help garbage collector |
| MOVQ $0, gobuf_ret(BX) |
| MOVQ $0, gobuf_ctxt(BX) |
| MOVQ gobuf_pc(BX), BX |
| JMP BX |
| |
| // func mcall(fn func(*g)) |
| // Switch to m->g0's stack, call fn(g). |
| // Fn must never return. It should gogo(&g->sched) |
| // to keep running g. |
| TEXT runtime·mcall(SB), NOSPLIT, $0-8 |
| MOVQ fn+0(FP), DI |
| |
| get_tls(CX) |
| MOVQ g(CX), AX // save state in g->sched |
| MOVQ 0(SP), BX // caller's PC |
| MOVQ BX, (g_sched+gobuf_pc)(AX) |
| LEAQ fn+0(FP), BX // caller's SP |
| MOVQ BX, (g_sched+gobuf_sp)(AX) |
| MOVQ AX, (g_sched+gobuf_g)(AX) |
| |
| // switch to m->g0 & its stack, call fn |
| MOVQ g(CX), BX |
| MOVQ g_m(BX), BX |
| MOVQ m_g0(BX), SI |
| CMPQ SI, AX // if g == m->g0 call badmcall |
| JNE 3(PC) |
| MOVQ $runtime·badmcall(SB), AX |
| JMP AX |
| MOVQ SI, g(CX) // g = m->g0 |
| MOVQ (g_sched+gobuf_sp)(SI), SP // sp = m->g0->sched.sp |
| PUSHQ AX |
| MOVQ DI, DX |
| MOVQ 0(DI), DI |
| CALL DI |
| POPQ AX |
| MOVQ $runtime·badmcall2(SB), AX |
| JMP AX |
| RET |
| |
| // switchtoM is a dummy routine that onM leaves at the bottom |
| // of the G stack. We need to distinguish the routine that |
| // lives at the bottom of the G stack from the one that lives |
| // at the top of the M stack because the one at the top of |
| // the M stack terminates the stack walk (see topofstack()). |
| TEXT runtime·switchtoM(SB), NOSPLIT, $0-0 |
| RET |
| |
| // func onM_signalok(fn func()) |
| TEXT runtime·onM_signalok(SB), NOSPLIT, $0-8 |
| get_tls(CX) |
| MOVQ g(CX), AX // AX = g |
| MOVQ g_m(AX), BX // BX = m |
| MOVQ m_gsignal(BX), DX // DX = gsignal |
| CMPQ AX, DX |
| JEQ ongsignal |
| JMP runtime·onM(SB) |
| |
| ongsignal: |
| MOVQ fn+0(FP), DI // DI = fn |
| MOVQ DI, DX |
| MOVQ 0(DI), DI |
| CALL DI |
| RET |
| |
| // func onM(fn func()) |
| TEXT runtime·onM(SB), NOSPLIT, $0-8 |
| MOVQ fn+0(FP), DI // DI = fn |
| get_tls(CX) |
| MOVQ g(CX), AX // AX = g |
| MOVQ g_m(AX), BX // BX = m |
| |
| MOVQ m_g0(BX), DX // DX = g0 |
| CMPQ AX, DX |
| JEQ onm |
| |
| MOVQ m_curg(BX), BP |
| CMPQ AX, BP |
| JEQ oncurg |
| |
| // Not g0, not curg. Must be gsignal, but that's not allowed. |
| // Hide call from linker nosplit analysis. |
| MOVQ $runtime·badonm(SB), AX |
| CALL AX |
| |
| oncurg: |
| // save our state in g->sched. Pretend to |
| // be switchtoM if the G stack is scanned. |
| MOVQ $runtime·switchtoM(SB), BP |
| MOVQ BP, (g_sched+gobuf_pc)(AX) |
| MOVQ SP, (g_sched+gobuf_sp)(AX) |
| MOVQ AX, (g_sched+gobuf_g)(AX) |
| |
| // switch to g0 |
| MOVQ DX, g(CX) |
| MOVQ (g_sched+gobuf_sp)(DX), BX |
| // make it look like mstart called onM on g0, to stop traceback |
| SUBQ $8, BX |
| MOVQ $runtime·mstart(SB), DX |
| MOVQ DX, 0(BX) |
| MOVQ BX, SP |
| |
| // call target function |
| MOVQ DI, DX |
| MOVQ 0(DI), DI |
| CALL DI |
| |
| // switch back to g |
| get_tls(CX) |
| MOVQ g(CX), AX |
| MOVQ g_m(AX), BX |
| MOVQ m_curg(BX), AX |
| MOVQ AX, g(CX) |
| MOVQ (g_sched+gobuf_sp)(AX), SP |
| MOVQ $0, (g_sched+gobuf_sp)(AX) |
| RET |
| |
| onm: |
| // already on m stack, just call directly |
| MOVQ DI, DX |
| MOVQ 0(DI), DI |
| CALL DI |
| RET |
| |
| /* |
| * support for morestack |
| */ |
| |
| // Called during function prolog when more stack is needed. |
| // |
| // The traceback routines see morestack on a g0 as being |
| // the top of a stack (for example, morestack calling newstack |
| // calling the scheduler calling newm calling gc), so we must |
| // record an argument size. For that purpose, it has no arguments. |
| TEXT runtime·morestack(SB),NOSPLIT,$0-0 |
| // Cannot grow scheduler stack (m->g0). |
| get_tls(CX) |
| MOVQ g(CX), BX |
| MOVQ g_m(BX), BX |
| MOVQ m_g0(BX), SI |
| CMPQ g(CX), SI |
| JNE 2(PC) |
| INT $3 |
| |
| // Cannot grow signal stack (m->gsignal). |
| MOVQ m_gsignal(BX), SI |
| CMPQ g(CX), SI |
| JNE 2(PC) |
| INT $3 |
| |
| // Called from f. |
| // Set m->morebuf to f's caller. |
| MOVQ 8(SP), AX // f's caller's PC |
| MOVQ AX, (m_morebuf+gobuf_pc)(BX) |
| LEAQ 16(SP), AX // f's caller's SP |
| MOVQ AX, (m_morebuf+gobuf_sp)(BX) |
| get_tls(CX) |
| MOVQ g(CX), SI |
| MOVQ SI, (m_morebuf+gobuf_g)(BX) |
| |
| // Set g->sched to context in f. |
| MOVQ 0(SP), AX // f's PC |
| MOVQ AX, (g_sched+gobuf_pc)(SI) |
| MOVQ SI, (g_sched+gobuf_g)(SI) |
| LEAQ 8(SP), AX // f's SP |
| MOVQ AX, (g_sched+gobuf_sp)(SI) |
| MOVQ DX, (g_sched+gobuf_ctxt)(SI) |
| |
| // Call newstack on m->g0's stack. |
| MOVQ m_g0(BX), BP |
| MOVQ BP, g(CX) |
| MOVQ (g_sched+gobuf_sp)(BP), SP |
| CALL runtime·newstack(SB) |
| MOVQ $0, 0x1003 // crash if newstack returns |
| RET |
| |
| // morestack but not preserving ctxt. |
| TEXT runtime·morestack_noctxt(SB),NOSPLIT,$0 |
| MOVL $0, DX |
| JMP runtime·morestack(SB) |
| |
| // reflectcall: call a function with the given argument list |
| // func call(f *FuncVal, arg *byte, argsize, retoffset uint32). |
| // we don't have variable-sized frames, so we use a small number |
| // of constant-sized-frame functions to encode a few bits of size in the pc. |
| // Caution: ugly multiline assembly macros in your future! |
| |
| #define DISPATCH(NAME,MAXSIZE) \ |
| CMPQ CX, $MAXSIZE; \ |
| JA 3(PC); \ |
| MOVQ $NAME(SB), AX; \ |
| JMP AX |
| // Note: can't just "JMP NAME(SB)" - bad inlining results. |
| |
| TEXT ·reflectcall(SB), NOSPLIT, $0-24 |
| MOVLQZX argsize+16(FP), CX |
| DISPATCH(runtime·call16, 16) |
| DISPATCH(runtime·call32, 32) |
| DISPATCH(runtime·call64, 64) |
| DISPATCH(runtime·call128, 128) |
| DISPATCH(runtime·call256, 256) |
| DISPATCH(runtime·call512, 512) |
| DISPATCH(runtime·call1024, 1024) |
| DISPATCH(runtime·call2048, 2048) |
| DISPATCH(runtime·call4096, 4096) |
| DISPATCH(runtime·call8192, 8192) |
| DISPATCH(runtime·call16384, 16384) |
| DISPATCH(runtime·call32768, 32768) |
| DISPATCH(runtime·call65536, 65536) |
| DISPATCH(runtime·call131072, 131072) |
| DISPATCH(runtime·call262144, 262144) |
| DISPATCH(runtime·call524288, 524288) |
| DISPATCH(runtime·call1048576, 1048576) |
| DISPATCH(runtime·call2097152, 2097152) |
| DISPATCH(runtime·call4194304, 4194304) |
| DISPATCH(runtime·call8388608, 8388608) |
| DISPATCH(runtime·call16777216, 16777216) |
| DISPATCH(runtime·call33554432, 33554432) |
| DISPATCH(runtime·call67108864, 67108864) |
| DISPATCH(runtime·call134217728, 134217728) |
| DISPATCH(runtime·call268435456, 268435456) |
| DISPATCH(runtime·call536870912, 536870912) |
| DISPATCH(runtime·call1073741824, 1073741824) |
| MOVQ $runtime·badreflectcall(SB), AX |
| JMP AX |
| |
| #define CALLFN(NAME,MAXSIZE) \ |
| TEXT NAME(SB), WRAPPER, $MAXSIZE-24; \ |
| NO_LOCAL_POINTERS; \ |
| /* copy arguments to stack */ \ |
| MOVQ argptr+8(FP), SI; \ |
| MOVLQZX argsize+16(FP), CX; \ |
| MOVQ SP, DI; \ |
| REP;MOVSB; \ |
| /* call function */ \ |
| MOVQ f+0(FP), DX; \ |
| PCDATA $PCDATA_StackMapIndex, $0; \ |
| CALL (DX); \ |
| /* copy return values back */ \ |
| MOVQ argptr+8(FP), DI; \ |
| MOVLQZX argsize+16(FP), CX; \ |
| MOVLQZX retoffset+20(FP), BX; \ |
| MOVQ SP, SI; \ |
| ADDQ BX, DI; \ |
| ADDQ BX, SI; \ |
| SUBQ BX, CX; \ |
| REP;MOVSB; \ |
| RET |
| |
| CALLFN(·call16, 16) |
| CALLFN(·call32, 32) |
| CALLFN(·call64, 64) |
| CALLFN(·call128, 128) |
| CALLFN(·call256, 256) |
| CALLFN(·call512, 512) |
| CALLFN(·call1024, 1024) |
| CALLFN(·call2048, 2048) |
| CALLFN(·call4096, 4096) |
| CALLFN(·call8192, 8192) |
| CALLFN(·call16384, 16384) |
| CALLFN(·call32768, 32768) |
| CALLFN(·call65536, 65536) |
| CALLFN(·call131072, 131072) |
| CALLFN(·call262144, 262144) |
| CALLFN(·call524288, 524288) |
| CALLFN(·call1048576, 1048576) |
| CALLFN(·call2097152, 2097152) |
| CALLFN(·call4194304, 4194304) |
| CALLFN(·call8388608, 8388608) |
| CALLFN(·call16777216, 16777216) |
| CALLFN(·call33554432, 33554432) |
| CALLFN(·call67108864, 67108864) |
| CALLFN(·call134217728, 134217728) |
| CALLFN(·call268435456, 268435456) |
| CALLFN(·call536870912, 536870912) |
| CALLFN(·call1073741824, 1073741824) |
| |
| // bool cas(int32 *val, int32 old, int32 new) |
| // Atomically: |
| // if(*val == old){ |
| // *val = new; |
| // return 1; |
| // } else |
| // return 0; |
| TEXT runtime·cas(SB), NOSPLIT, $0-17 |
| MOVQ ptr+0(FP), BX |
| MOVL old+8(FP), AX |
| MOVL new+12(FP), CX |
| LOCK |
| CMPXCHGL CX, 0(BX) |
| JZ 4(PC) |
| MOVL $0, AX |
| MOVB AX, ret+16(FP) |
| RET |
| MOVL $1, AX |
| MOVB AX, ret+16(FP) |
| RET |
| |
| // bool runtime·cas64(uint64 *val, uint64 old, uint64 new) |
| // Atomically: |
| // if(*val == *old){ |
| // *val = new; |
| // return 1; |
| // } else { |
| // return 0; |
| // } |
| TEXT runtime·cas64(SB), NOSPLIT, $0-25 |
| MOVQ ptr+0(FP), BX |
| MOVQ old+8(FP), AX |
| MOVQ new+16(FP), CX |
| LOCK |
| CMPXCHGQ CX, 0(BX) |
| JNZ fail |
| MOVL $1, AX |
| MOVB AX, ret+24(FP) |
| RET |
| fail: |
| MOVL $0, AX |
| MOVB AX, ret+24(FP) |
| RET |
| |
| TEXT runtime·casuintptr(SB), NOSPLIT, $0-25 |
| JMP runtime·cas64(SB) |
| |
| TEXT runtime·atomicloaduintptr(SB), NOSPLIT, $0-16 |
| JMP runtime·atomicload64(SB) |
| |
| TEXT runtime·atomicloaduint(SB), NOSPLIT, $0-16 |
| JMP runtime·atomicload64(SB) |
| |
| TEXT runtime·atomicstoreuintptr(SB), NOSPLIT, $0-16 |
| JMP runtime·atomicstore64(SB) |
| |
| // bool casp(void **val, void *old, void *new) |
| // Atomically: |
| // if(*val == old){ |
| // *val = new; |
| // return 1; |
| // } else |
| // return 0; |
| TEXT runtime·casp(SB), NOSPLIT, $0-25 |
| MOVQ ptr+0(FP), BX |
| MOVQ old+8(FP), AX |
| MOVQ new+16(FP), CX |
| LOCK |
| CMPXCHGQ CX, 0(BX) |
| JZ 4(PC) |
| MOVL $0, AX |
| MOVB AX, ret+24(FP) |
| RET |
| MOVL $1, AX |
| MOVB AX, ret+24(FP) |
| RET |
| |
| // uint32 xadd(uint32 volatile *val, int32 delta) |
| // Atomically: |
| // *val += delta; |
| // return *val; |
| TEXT runtime·xadd(SB), NOSPLIT, $0-20 |
| MOVQ ptr+0(FP), BX |
| MOVL delta+8(FP), AX |
| MOVL AX, CX |
| LOCK |
| XADDL AX, 0(BX) |
| ADDL CX, AX |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·xadd64(SB), NOSPLIT, $0-24 |
| MOVQ ptr+0(FP), BX |
| MOVQ delta+8(FP), AX |
| MOVQ AX, CX |
| LOCK |
| XADDQ AX, 0(BX) |
| ADDQ CX, AX |
| MOVQ AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·xchg(SB), NOSPLIT, $0-20 |
| MOVQ ptr+0(FP), BX |
| MOVL new+8(FP), AX |
| XCHGL AX, 0(BX) |
| MOVL AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·xchg64(SB), NOSPLIT, $0-24 |
| MOVQ ptr+0(FP), BX |
| MOVQ new+8(FP), AX |
| XCHGQ AX, 0(BX) |
| MOVQ AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·xchgp(SB), NOSPLIT, $0-24 |
| MOVQ ptr+0(FP), BX |
| MOVQ new+8(FP), AX |
| XCHGQ AX, 0(BX) |
| MOVQ AX, ret+16(FP) |
| RET |
| |
| TEXT runtime·xchguintptr(SB), NOSPLIT, $0-24 |
| JMP runtime·xchg64(SB) |
| |
| TEXT runtime·procyield(SB),NOSPLIT,$0-0 |
| MOVL cycles+0(FP), AX |
| again: |
| PAUSE |
| SUBL $1, AX |
| JNZ again |
| RET |
| |
| TEXT runtime·atomicstorep(SB), NOSPLIT, $0-16 |
| MOVQ ptr+0(FP), BX |
| MOVQ val+8(FP), AX |
| XCHGQ AX, 0(BX) |
| RET |
| |
| TEXT runtime·atomicstore(SB), NOSPLIT, $0-12 |
| MOVQ ptr+0(FP), BX |
| MOVL val+8(FP), AX |
| XCHGL AX, 0(BX) |
| RET |
| |
| TEXT runtime·atomicstore64(SB), NOSPLIT, $0-16 |
| MOVQ ptr+0(FP), BX |
| MOVQ val+8(FP), AX |
| XCHGQ AX, 0(BX) |
| RET |
| |
| // void runtime·atomicor8(byte volatile*, byte); |
| TEXT runtime·atomicor8(SB), NOSPLIT, $0-9 |
| MOVQ ptr+0(FP), AX |
| MOVB val+8(FP), BX |
| LOCK |
| ORB BX, (AX) |
| RET |
| |
| // void jmpdefer(fn, sp); |
| // called from deferreturn. |
| // 1. pop the caller |
| // 2. sub 5 bytes from the callers return |
| // 3. jmp to the argument |
| TEXT runtime·jmpdefer(SB), NOSPLIT, $0-16 |
| MOVQ fv+0(FP), DX // fn |
| MOVQ argp+8(FP), BX // caller sp |
| LEAQ -8(BX), SP // caller sp after CALL |
| SUBQ $5, (SP) // return to CALL again |
| MOVQ 0(DX), BX |
| JMP BX // but first run the deferred function |
| |
| // Save state of caller into g->sched. Smashes R8, R9. |
| TEXT gosave<>(SB),NOSPLIT,$0 |
| get_tls(R8) |
| MOVQ g(R8), R8 |
| MOVQ 0(SP), R9 |
| MOVQ R9, (g_sched+gobuf_pc)(R8) |
| LEAQ 8(SP), R9 |
| MOVQ R9, (g_sched+gobuf_sp)(R8) |
| MOVQ $0, (g_sched+gobuf_ret)(R8) |
| MOVQ $0, (g_sched+gobuf_ctxt)(R8) |
| RET |
| |
| // asmcgocall(void(*fn)(void*), void *arg) |
| // Call fn(arg) on the scheduler stack, |
| // aligned appropriately for the gcc ABI. |
| // See cgocall.c for more details. |
| TEXT ·asmcgocall(SB),NOSPLIT,$0-16 |
| MOVQ fn+0(FP), AX |
| MOVQ arg+8(FP), BX |
| CALL asmcgocall<>(SB) |
| RET |
| |
| TEXT ·asmcgocall_errno(SB),NOSPLIT,$0-20 |
| MOVQ fn+0(FP), AX |
| MOVQ arg+8(FP), BX |
| CALL asmcgocall<>(SB) |
| MOVL AX, ret+16(FP) |
| RET |
| |
| // asmcgocall common code. fn in AX, arg in BX. returns errno in AX. |
| TEXT asmcgocall<>(SB),NOSPLIT,$0-0 |
| MOVQ SP, DX |
| |
| // Figure out if we need to switch to m->g0 stack. |
| // We get called to create new OS threads too, and those |
| // come in on the m->g0 stack already. |
| get_tls(CX) |
| MOVQ g(CX), BP |
| MOVQ g_m(BP), BP |
| MOVQ m_g0(BP), SI |
| MOVQ g(CX), DI |
| CMPQ SI, DI |
| JEQ nosave |
| MOVQ m_gsignal(BP), SI |
| CMPQ SI, DI |
| JEQ nosave |
| |
| MOVQ m_g0(BP), SI |
| CALL gosave<>(SB) |
| MOVQ SI, g(CX) |
| MOVQ (g_sched+gobuf_sp)(SI), SP |
| nosave: |
| |
| // Now on a scheduling stack (a pthread-created stack). |
| // Make sure we have enough room for 4 stack-backed fast-call |
| // registers as per windows amd64 calling convention. |
| SUBQ $64, SP |
| ANDQ $~15, SP // alignment for gcc ABI |
| MOVQ DI, 48(SP) // save g |
| MOVQ (g_stack+stack_hi)(DI), DI |
| SUBQ DX, DI |
| MOVQ DI, 40(SP) // save depth in stack (can't just save SP, as stack might be copied during a callback) |
| MOVQ BX, DI // DI = first argument in AMD64 ABI |
| MOVQ BX, CX // CX = first argument in Win64 |
| CALL AX |
| |
| // Restore registers, g, stack pointer. |
| get_tls(CX) |
| MOVQ 48(SP), DI |
| MOVQ (g_stack+stack_hi)(DI), SI |
| SUBQ 40(SP), SI |
| MOVQ DI, g(CX) |
| MOVQ SI, SP |
| RET |
| |
| // cgocallback(void (*fn)(void*), void *frame, uintptr framesize) |
| // Turn the fn into a Go func (by taking its address) and call |
| // cgocallback_gofunc. |
| TEXT runtime·cgocallback(SB),NOSPLIT,$24-24 |
| LEAQ fn+0(FP), AX |
| MOVQ AX, 0(SP) |
| MOVQ frame+8(FP), AX |
| MOVQ AX, 8(SP) |
| MOVQ framesize+16(FP), AX |
| MOVQ AX, 16(SP) |
| MOVQ $runtime·cgocallback_gofunc(SB), AX |
| CALL AX |
| RET |
| |
| // cgocallback_gofunc(FuncVal*, void *frame, uintptr framesize) |
| // See cgocall.c for more details. |
| TEXT ·cgocallback_gofunc(SB),NOSPLIT,$8-24 |
| NO_LOCAL_POINTERS |
| |
| // If g is nil, Go did not create the current thread. |
| // Call needm to obtain one m for temporary use. |
| // In this case, we're running on the thread stack, so there's |
| // lots of space, but the linker doesn't know. Hide the call from |
| // the linker analysis by using an indirect call through AX. |
| get_tls(CX) |
| #ifdef GOOS_windows |
| MOVL $0, BP |
| CMPQ CX, $0 |
| JEQ 2(PC) |
| #endif |
| MOVQ g(CX), BP |
| CMPQ BP, $0 |
| JEQ needm |
| MOVQ g_m(BP), BP |
| MOVQ BP, R8 // holds oldm until end of function |
| JMP havem |
| needm: |
| MOVQ $0, 0(SP) |
| MOVQ $runtime·needm(SB), AX |
| CALL AX |
| MOVQ 0(SP), R8 |
| get_tls(CX) |
| MOVQ g(CX), BP |
| MOVQ g_m(BP), BP |
| |
| // Set m->sched.sp = SP, so that if a panic happens |
| // during the function we are about to execute, it will |
| // have a valid SP to run on the g0 stack. |
| // The next few lines (after the havem label) |
| // will save this SP onto the stack and then write |
| // the same SP back to m->sched.sp. That seems redundant, |
| // but if an unrecovered panic happens, unwindm will |
| // restore the g->sched.sp from the stack location |
| // and then onM will try to use it. If we don't set it here, |
| // that restored SP will be uninitialized (typically 0) and |
| // will not be usable. |
| MOVQ m_g0(BP), SI |
| MOVQ SP, (g_sched+gobuf_sp)(SI) |
| |
| havem: |
| // Now there's a valid m, and we're running on its m->g0. |
| // Save current m->g0->sched.sp on stack and then set it to SP. |
| // Save current sp in m->g0->sched.sp in preparation for |
| // switch back to m->curg stack. |
| // NOTE: unwindm knows that the saved g->sched.sp is at 0(SP). |
| MOVQ m_g0(BP), SI |
| MOVQ (g_sched+gobuf_sp)(SI), AX |
| MOVQ AX, 0(SP) |
| MOVQ SP, (g_sched+gobuf_sp)(SI) |
| |
| // Switch to m->curg stack and call runtime.cgocallbackg. |
| // Because we are taking over the execution of m->curg |
| // but *not* resuming what had been running, we need to |
| // save that information (m->curg->sched) so we can restore it. |
| // We can restore m->curg->sched.sp easily, because calling |
| // runtime.cgocallbackg leaves SP unchanged upon return. |
| // To save m->curg->sched.pc, we push it onto the stack. |
| // This has the added benefit that it looks to the traceback |
| // routine like cgocallbackg is going to return to that |
| // PC (because the frame we allocate below has the same |
| // size as cgocallback_gofunc's frame declared above) |
| // so that the traceback will seamlessly trace back into |
| // the earlier calls. |
| // |
| // In the new goroutine, 0(SP) holds the saved R8. |
| MOVQ m_curg(BP), SI |
| MOVQ SI, g(CX) |
| MOVQ (g_sched+gobuf_sp)(SI), DI // prepare stack as DI |
| MOVQ (g_sched+gobuf_pc)(SI), BP |
| MOVQ BP, -8(DI) |
| LEAQ -(8+8)(DI), SP |
| MOVQ R8, 0(SP) |
| CALL runtime·cgocallbackg(SB) |
| MOVQ 0(SP), R8 |
| |
| // Restore g->sched (== m->curg->sched) from saved values. |
| get_tls(CX) |
| MOVQ g(CX), SI |
| MOVQ 8(SP), BP |
| MOVQ BP, (g_sched+gobuf_pc)(SI) |
| LEAQ (8+8)(SP), DI |
| MOVQ DI, (g_sched+gobuf_sp)(SI) |
| |
| // Switch back to m->g0's stack and restore m->g0->sched.sp. |
| // (Unlike m->curg, the g0 goroutine never uses sched.pc, |
| // so we do not have to restore it.) |
| MOVQ g(CX), BP |
| MOVQ g_m(BP), BP |
| MOVQ m_g0(BP), SI |
| MOVQ SI, g(CX) |
| MOVQ (g_sched+gobuf_sp)(SI), SP |
| MOVQ 0(SP), AX |
| MOVQ AX, (g_sched+gobuf_sp)(SI) |
| |
| // If the m on entry was nil, we called needm above to borrow an m |
| // for the duration of the call. Since the call is over, return it with dropm. |
| CMPQ R8, $0 |
| JNE 3(PC) |
| MOVQ $runtime·dropm(SB), AX |
| CALL AX |
| |
| // Done! |
| RET |
| |
| // void setg(G*); set g. for use by needm. |
| TEXT runtime·setg(SB), NOSPLIT, $0-8 |
| MOVQ gg+0(FP), BX |
| #ifdef GOOS_windows |
| CMPQ BX, $0 |
| JNE settls |
| MOVQ $0, 0x28(GS) |
| RET |
| settls: |
| MOVQ g_m(BX), AX |
| LEAQ m_tls(AX), AX |
| MOVQ AX, 0x28(GS) |
| #endif |
| get_tls(CX) |
| MOVQ BX, g(CX) |
| RET |
| |
| // void setg_gcc(G*); set g called from gcc. |
| TEXT setg_gcc<>(SB),NOSPLIT,$0 |
| get_tls(AX) |
| MOVQ DI, g(AX) |
| RET |
| |
| // check that SP is in range [g->stack.lo, g->stack.hi) |
| TEXT runtime·stackcheck(SB), NOSPLIT, $0-0 |
| get_tls(CX) |
| MOVQ g(CX), AX |
| CMPQ (g_stack+stack_hi)(AX), SP |
| JHI 2(PC) |
| INT $3 |
| CMPQ SP, (g_stack+stack_lo)(AX) |
| JHI 2(PC) |
| INT $3 |
| RET |
| |
| TEXT runtime·getcallerpc(SB),NOSPLIT,$0-16 |
| MOVQ argp+0(FP),AX // addr of first arg |
| MOVQ -8(AX),AX // get calling pc |
| MOVQ AX, ret+8(FP) |
| RET |
| |
| TEXT runtime·gogetcallerpc(SB),NOSPLIT,$0-16 |
| MOVQ p+0(FP),AX // addr of first arg |
| MOVQ -8(AX),AX // get calling pc |
| MOVQ AX,ret+8(FP) |
| RET |
| |
| TEXT runtime·setcallerpc(SB),NOSPLIT,$0-16 |
| MOVQ argp+0(FP),AX // addr of first arg |
| MOVQ pc+8(FP), BX |
| MOVQ BX, -8(AX) // set calling pc |
| RET |
| |
| TEXT runtime·getcallersp(SB),NOSPLIT,$0-16 |
| MOVQ argp+0(FP), AX |
| MOVQ AX, ret+8(FP) |
| RET |
| |
| // func gogetcallersp(p unsafe.Pointer) uintptr |
| TEXT runtime·gogetcallersp(SB),NOSPLIT,$0-16 |
| MOVQ p+0(FP),AX // addr of first arg |
| MOVQ AX, ret+8(FP) |
| RET |
| |
| // int64 runtime·cputicks(void) |
| TEXT runtime·cputicks(SB),NOSPLIT,$0-0 |
| RDTSC |
| SHLQ $32, DX |
| ADDQ DX, AX |
| MOVQ AX, ret+0(FP) |
| RET |
| |
| // hash function using AES hardware instructions |
| TEXT runtime·aeshash(SB),NOSPLIT,$0-32 |
| MOVQ p+0(FP), AX // ptr to data |
| MOVQ s+8(FP), CX // size |
| JMP runtime·aeshashbody(SB) |
| |
| TEXT runtime·aeshashstr(SB),NOSPLIT,$0-32 |
| MOVQ p+0(FP), AX // ptr to string struct |
| // s+8(FP) is ignored, it is always sizeof(String) |
| MOVQ 8(AX), CX // length of string |
| MOVQ (AX), AX // string data |
| JMP runtime·aeshashbody(SB) |
| |
| // AX: data |
| // CX: length |
| TEXT runtime·aeshashbody(SB),NOSPLIT,$0-32 |
| MOVQ h+16(FP), X0 // seed to low 64 bits of xmm0 |
| PINSRQ $1, CX, X0 // size to high 64 bits of xmm0 |
| MOVO runtime·aeskeysched+0(SB), X2 |
| MOVO runtime·aeskeysched+16(SB), X3 |
| CMPQ CX, $16 |
| JB small |
| loop: |
| CMPQ CX, $16 |
| JBE loopend |
| MOVOU (AX), X1 |
| AESENC X2, X0 |
| AESENC X1, X0 |
| SUBQ $16, CX |
| ADDQ $16, AX |
| JMP loop |
| // 1-16 bytes remaining |
| loopend: |
| // This load may overlap with the previous load above. |
| // We'll hash some bytes twice, but that's ok. |
| MOVOU -16(AX)(CX*1), X1 |
| JMP partial |
| // 0-15 bytes |
| small: |
| TESTQ CX, CX |
| JE finalize // 0 bytes |
| |
| CMPB AX, $0xf0 |
| JA highpartial |
| |
| // 16 bytes loaded at this address won't cross |
| // a page boundary, so we can load it directly. |
| MOVOU (AX), X1 |
| ADDQ CX, CX |
| MOVQ $masks<>(SB), BP |
| PAND (BP)(CX*8), X1 |
| JMP partial |
| highpartial: |
| // address ends in 1111xxxx. Might be up against |
| // a page boundary, so load ending at last byte. |
| // Then shift bytes down using pshufb. |
| MOVOU -16(AX)(CX*1), X1 |
| ADDQ CX, CX |
| MOVQ $shifts<>(SB), BP |
| PSHUFB (BP)(CX*8), X1 |
| partial: |
| // incorporate partial block into hash |
| AESENC X3, X0 |
| AESENC X1, X0 |
| finalize: |
| // finalize hash |
| AESENC X2, X0 |
| AESENC X3, X0 |
| AESENC X2, X0 |
| MOVQ X0, res+24(FP) |
| RET |
| |
| TEXT runtime·aeshash32(SB),NOSPLIT,$0-32 |
| MOVQ p+0(FP), AX // ptr to data |
| // s+8(FP) is ignored, it is always sizeof(int32) |
| MOVQ h+16(FP), X0 // seed |
| PINSRD $2, (AX), X0 // data |
| AESENC runtime·aeskeysched+0(SB), X0 |
| AESENC runtime·aeskeysched+16(SB), X0 |
| AESENC runtime·aeskeysched+0(SB), X0 |
| MOVQ X0, ret+24(FP) |
| RET |
| |
| TEXT runtime·aeshash64(SB),NOSPLIT,$0-32 |
| MOVQ p+0(FP), AX // ptr to data |
| // s+8(FP) is ignored, it is always sizeof(int64) |
| MOVQ h+16(FP), X0 // seed |
| PINSRQ $1, (AX), X0 // data |
| AESENC runtime·aeskeysched+0(SB), X0 |
| AESENC runtime·aeskeysched+16(SB), X0 |
| AESENC runtime·aeskeysched+0(SB), X0 |
| MOVQ X0, ret+24(FP) |
| RET |
| |
| // simple mask to get rid of data in the high part of the register. |
| DATA masks<>+0x00(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x08(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x10(SB)/8, $0x00000000000000ff |
| DATA masks<>+0x18(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x20(SB)/8, $0x000000000000ffff |
| DATA masks<>+0x28(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x30(SB)/8, $0x0000000000ffffff |
| DATA masks<>+0x38(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x40(SB)/8, $0x00000000ffffffff |
| DATA masks<>+0x48(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x50(SB)/8, $0x000000ffffffffff |
| DATA masks<>+0x58(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x60(SB)/8, $0x0000ffffffffffff |
| DATA masks<>+0x68(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x70(SB)/8, $0x00ffffffffffffff |
| DATA masks<>+0x78(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x80(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0x88(SB)/8, $0x0000000000000000 |
| DATA masks<>+0x90(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0x98(SB)/8, $0x00000000000000ff |
| DATA masks<>+0xa0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xa8(SB)/8, $0x000000000000ffff |
| DATA masks<>+0xb0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xb8(SB)/8, $0x0000000000ffffff |
| DATA masks<>+0xc0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xc8(SB)/8, $0x00000000ffffffff |
| DATA masks<>+0xd0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xd8(SB)/8, $0x000000ffffffffff |
| DATA masks<>+0xe0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xe8(SB)/8, $0x0000ffffffffffff |
| DATA masks<>+0xf0(SB)/8, $0xffffffffffffffff |
| DATA masks<>+0xf8(SB)/8, $0x00ffffffffffffff |
| GLOBL masks<>(SB),RODATA,$256 |
| |
| // these are arguments to pshufb. They move data down from |
| // the high bytes of the register to the low bytes of the register. |
| // index is how many bytes to move. |
| DATA shifts<>+0x00(SB)/8, $0x0000000000000000 |
| DATA shifts<>+0x08(SB)/8, $0x0000000000000000 |
| DATA shifts<>+0x10(SB)/8, $0xffffffffffffff0f |
| DATA shifts<>+0x18(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x20(SB)/8, $0xffffffffffff0f0e |
| DATA shifts<>+0x28(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x30(SB)/8, $0xffffffffff0f0e0d |
| DATA shifts<>+0x38(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x40(SB)/8, $0xffffffff0f0e0d0c |
| DATA shifts<>+0x48(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x50(SB)/8, $0xffffff0f0e0d0c0b |
| DATA shifts<>+0x58(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x60(SB)/8, $0xffff0f0e0d0c0b0a |
| DATA shifts<>+0x68(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x70(SB)/8, $0xff0f0e0d0c0b0a09 |
| DATA shifts<>+0x78(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x80(SB)/8, $0x0f0e0d0c0b0a0908 |
| DATA shifts<>+0x88(SB)/8, $0xffffffffffffffff |
| DATA shifts<>+0x90(SB)/8, $0x0e0d0c0b0a090807 |
| DATA shifts<>+0x98(SB)/8, $0xffffffffffffff0f |
| DATA shifts<>+0xa0(SB)/8, $0x0d0c0b0a09080706 |
| DATA shifts<>+0xa8(SB)/8, $0xffffffffffff0f0e |
| DATA shifts<>+0xb0(SB)/8, $0x0c0b0a0908070605 |
| DATA shifts<>+0xb8(SB)/8, $0xffffffffff0f0e0d |
| DATA shifts<>+0xc0(SB)/8, $0x0b0a090807060504 |
| DATA shifts<>+0xc8(SB)/8, $0xffffffff0f0e0d0c |
| DATA shifts<>+0xd0(SB)/8, $0x0a09080706050403 |
| DATA shifts<>+0xd8(SB)/8, $0xffffff0f0e0d0c0b |
| DATA shifts<>+0xe0(SB)/8, $0x0908070605040302 |
| DATA shifts<>+0xe8(SB)/8, $0xffff0f0e0d0c0b0a |
| DATA shifts<>+0xf0(SB)/8, $0x0807060504030201 |
| DATA shifts<>+0xf8(SB)/8, $0xff0f0e0d0c0b0a09 |
| GLOBL shifts<>(SB),RODATA,$256 |
| |
| TEXT runtime·memeq(SB),NOSPLIT,$0-25 |
| MOVQ a+0(FP), SI |
| MOVQ b+8(FP), DI |
| MOVQ size+16(FP), BX |
| CALL runtime·memeqbody(SB) |
| MOVB AX, ret+24(FP) |
| RET |
| |
| // eqstring tests whether two strings are equal. |
| // See runtime_test.go:eqstring_generic for |
| // equivalent Go code. |
| TEXT runtime·eqstring(SB),NOSPLIT,$0-33 |
| MOVQ s1len+8(FP), AX |
| MOVQ s2len+24(FP), BX |
| CMPQ AX, BX |
| JNE noteq |
| MOVQ s1str+0(FP), SI |
| MOVQ s2str+16(FP), DI |
| CMPQ SI, DI |
| JEQ eq |
| CALL runtime·memeqbody(SB) |
| MOVB AX, v+32(FP) |
| RET |
| eq: |
| MOVB $1, v+32(FP) |
| RET |
| noteq: |
| MOVB $0, v+32(FP) |
| RET |
| |
| // a in SI |
| // b in DI |
| // count in BX |
| TEXT runtime·memeqbody(SB),NOSPLIT,$0-0 |
| XORQ AX, AX |
| |
| CMPQ BX, $8 |
| JB small |
| |
| // 64 bytes at a time using xmm registers |
| hugeloop: |
| CMPQ BX, $64 |
| JB bigloop |
| MOVOU (SI), X0 |
| MOVOU (DI), X1 |
| MOVOU 16(SI), X2 |
| MOVOU 16(DI), X3 |
| MOVOU 32(SI), X4 |
| MOVOU 32(DI), X5 |
| MOVOU 48(SI), X6 |
| MOVOU 48(DI), X7 |
| PCMPEQB X1, X0 |
| PCMPEQB X3, X2 |
| PCMPEQB X5, X4 |
| PCMPEQB X7, X6 |
| PAND X2, X0 |
| PAND X6, X4 |
| PAND X4, X0 |
| PMOVMSKB X0, DX |
| ADDQ $64, SI |
| ADDQ $64, DI |
| SUBQ $64, BX |
| CMPL DX, $0xffff |
| JEQ hugeloop |
| RET |
| |
| // 8 bytes at a time using 64-bit register |
| bigloop: |
| CMPQ BX, $8 |
| JBE leftover |
| MOVQ (SI), CX |
| MOVQ (DI), DX |
| ADDQ $8, SI |
| ADDQ $8, DI |
| SUBQ $8, BX |
| CMPQ CX, DX |
| JEQ bigloop |
| RET |
| |
| // remaining 0-8 bytes |
| leftover: |
| MOVQ -8(SI)(BX*1), CX |
| MOVQ -8(DI)(BX*1), DX |
| CMPQ CX, DX |
| SETEQ AX |
| RET |
| |
| small: |
| CMPQ BX, $0 |
| JEQ equal |
| |
| LEAQ 0(BX*8), CX |
| NEGQ CX |
| |
| CMPB SI, $0xf8 |
| JA si_high |
| |
| // load at SI won't cross a page boundary. |
| MOVQ (SI), SI |
| JMP si_finish |
| si_high: |
| // address ends in 11111xxx. Load up to bytes we want, move to correct position. |
| MOVQ -8(SI)(BX*1), SI |
| SHRQ CX, SI |
| si_finish: |
| |
| // same for DI. |
| CMPB DI, $0xf8 |
| JA di_high |
| MOVQ (DI), DI |
| JMP di_finish |
| di_high: |
| MOVQ -8(DI)(BX*1), DI |
| SHRQ CX, DI |
| di_finish: |
| |
| SUBQ SI, DI |
| SHLQ CX, DI |
| equal: |
| SETEQ AX |
| RET |
| |
| TEXT runtime·cmpstring(SB),NOSPLIT,$0-40 |
| MOVQ s1_base+0(FP), SI |
| MOVQ s1_len+8(FP), BX |
| MOVQ s2_base+16(FP), DI |
| MOVQ s2_len+24(FP), DX |
| CALL runtime·cmpbody(SB) |
| MOVQ AX, ret+32(FP) |
| RET |
| |
| TEXT runtime·cmpbytes(SB),NOSPLIT,$0-56 |
| MOVQ s1+0(FP), SI |
| MOVQ s1+8(FP), BX |
| MOVQ s2+24(FP), DI |
| MOVQ s2+32(FP), DX |
| CALL runtime·cmpbody(SB) |
| MOVQ AX, res+48(FP) |
| RET |
| |
| // input: |
| // SI = a |
| // DI = b |
| // BX = alen |
| // DX = blen |
| // output: |
| // AX = 1/0/-1 |
| TEXT runtime·cmpbody(SB),NOSPLIT,$0-0 |
| CMPQ SI, DI |
| JEQ allsame |
| CMPQ BX, DX |
| MOVQ DX, BP |
| CMOVQLT BX, BP // BP = min(alen, blen) = # of bytes to compare |
| CMPQ BP, $8 |
| JB small |
| |
| loop: |
| CMPQ BP, $16 |
| JBE _0through16 |
| MOVOU (SI), X0 |
| MOVOU (DI), X1 |
| PCMPEQB X0, X1 |
| PMOVMSKB X1, AX |
| XORQ $0xffff, AX // convert EQ to NE |
| JNE diff16 // branch if at least one byte is not equal |
| ADDQ $16, SI |
| ADDQ $16, DI |
| SUBQ $16, BP |
| JMP loop |
| |
| // AX = bit mask of differences |
| diff16: |
| BSFQ AX, BX // index of first byte that differs |
| XORQ AX, AX |
| MOVB (SI)(BX*1), CX |
| CMPB CX, (DI)(BX*1) |
| SETHI AX |
| LEAQ -1(AX*2), AX // convert 1/0 to +1/-1 |
| RET |
| |
| // 0 through 16 bytes left, alen>=8, blen>=8 |
| _0through16: |
| CMPQ BP, $8 |
| JBE _0through8 |
| MOVQ (SI), AX |
| MOVQ (DI), CX |
| CMPQ AX, CX |
| JNE diff8 |
| _0through8: |
| MOVQ -8(SI)(BP*1), AX |
| MOVQ -8(DI)(BP*1), CX |
| CMPQ AX, CX |
| JEQ allsame |
| |
| // AX and CX contain parts of a and b that differ. |
| diff8: |
| BSWAPQ AX // reverse order of bytes |
| BSWAPQ CX |
| XORQ AX, CX |
| BSRQ CX, CX // index of highest bit difference |
| SHRQ CX, AX // move a's bit to bottom |
| ANDQ $1, AX // mask bit |
| LEAQ -1(AX*2), AX // 1/0 => +1/-1 |
| RET |
| |
| // 0-7 bytes in common |
| small: |
| LEAQ (BP*8), CX // bytes left -> bits left |
| NEGQ CX // - bits lift (== 64 - bits left mod 64) |
| JEQ allsame |
| |
| // load bytes of a into high bytes of AX |
| CMPB SI, $0xf8 |
| JA si_high |
| MOVQ (SI), SI |
| JMP si_finish |
| si_high: |
| MOVQ -8(SI)(BP*1), SI |
| SHRQ CX, SI |
| si_finish: |
| SHLQ CX, SI |
| |
| // load bytes of b in to high bytes of BX |
| CMPB DI, $0xf8 |
| JA di_high |
| MOVQ (DI), DI |
| JMP di_finish |
| di_high: |
| MOVQ -8(DI)(BP*1), DI |
| SHRQ CX, DI |
| di_finish: |
| SHLQ CX, DI |
| |
| BSWAPQ SI // reverse order of bytes |
| BSWAPQ DI |
| XORQ SI, DI // find bit differences |
| JEQ allsame |
| BSRQ DI, CX // index of highest bit difference |
| SHRQ CX, SI // move a's bit to bottom |
| ANDQ $1, SI // mask bit |
| LEAQ -1(SI*2), AX // 1/0 => +1/-1 |
| RET |
| |
| allsame: |
| XORQ AX, AX |
| XORQ CX, CX |
| CMPQ BX, DX |
| SETGT AX // 1 if alen > blen |
| SETEQ CX // 1 if alen == blen |
| LEAQ -1(CX)(AX*2), AX // 1,0,-1 result |
| RET |
| |
| TEXT bytes·IndexByte(SB),NOSPLIT,$0 |
| MOVQ s+0(FP), SI |
| MOVQ s_len+8(FP), BX |
| MOVB c+24(FP), AL |
| CALL runtime·indexbytebody(SB) |
| MOVQ AX, ret+32(FP) |
| RET |
| |
| TEXT strings·IndexByte(SB),NOSPLIT,$0 |
| MOVQ s+0(FP), SI |
| MOVQ s_len+8(FP), BX |
| MOVB c+16(FP), AL |
| CALL runtime·indexbytebody(SB) |
| MOVQ AX, ret+24(FP) |
| RET |
| |
| // input: |
| // SI: data |
| // BX: data len |
| // AL: byte sought |
| // output: |
| // AX |
| TEXT runtime·indexbytebody(SB),NOSPLIT,$0 |
| MOVQ SI, DI |
| |
| CMPQ BX, $16 |
| JLT small |
| |
| // round up to first 16-byte boundary |
| TESTQ $15, SI |
| JZ aligned |
| MOVQ SI, CX |
| ANDQ $~15, CX |
| ADDQ $16, CX |
| |
| // search the beginning |
| SUBQ SI, CX |
| REPN; SCASB |
| JZ success |
| |
| // DI is 16-byte aligned; get ready to search using SSE instructions |
| aligned: |
| // round down to last 16-byte boundary |
| MOVQ BX, R11 |
| ADDQ SI, R11 |
| ANDQ $~15, R11 |
| |
| // shuffle X0 around so that each byte contains c |
| MOVD AX, X0 |
| PUNPCKLBW X0, X0 |
| PUNPCKLBW X0, X0 |
| PSHUFL $0, X0, X0 |
| JMP condition |
| |
| sse: |
| // move the next 16-byte chunk of the buffer into X1 |
| MOVO (DI), X1 |
| // compare bytes in X0 to X1 |
| PCMPEQB X0, X1 |
| // take the top bit of each byte in X1 and put the result in DX |
| PMOVMSKB X1, DX |
| TESTL DX, DX |
| JNZ ssesuccess |
| ADDQ $16, DI |
| |
| condition: |
| CMPQ DI, R11 |
| JLT sse |
| |
| // search the end |
| MOVQ SI, CX |
| ADDQ BX, CX |
| SUBQ R11, CX |
| // if CX == 0, the zero flag will be set and we'll end up |
| // returning a false success |
| JZ failure |
| REPN; SCASB |
| JZ success |
| |
| failure: |
| MOVQ $-1, AX |
| RET |
| |
| // handle for lengths < 16 |
| small: |
| MOVQ BX, CX |
| REPN; SCASB |
| JZ success |
| MOVQ $-1, AX |
| RET |
| |
| // we've found the chunk containing the byte |
| // now just figure out which specific byte it is |
| ssesuccess: |
| // get the index of the least significant set bit |
| BSFW DX, DX |
| SUBQ SI, DI |
| ADDQ DI, DX |
| MOVQ DX, AX |
| RET |
| |
| success: |
| SUBQ SI, DI |
| SUBL $1, DI |
| MOVQ DI, AX |
| RET |
| |
| TEXT bytes·Equal(SB),NOSPLIT,$0-49 |
| MOVQ a_len+8(FP), BX |
| MOVQ b_len+32(FP), CX |
| XORQ AX, AX |
| CMPQ BX, CX |
| JNE eqret |
| MOVQ a+0(FP), SI |
| MOVQ b+24(FP), DI |
| CALL runtime·memeqbody(SB) |
| eqret: |
| MOVB AX, ret+48(FP) |
| RET |
| |
| // A Duff's device for zeroing memory. |
| // The compiler jumps to computed addresses within |
| // this routine to zero chunks of memory. Do not |
| // change this code without also changing the code |
| // in ../../cmd/6g/ggen.c:clearfat. |
| // AX: zero |
| // DI: ptr to memory to be zeroed |
| // DI is updated as a side effect. |
| TEXT runtime·duffzero(SB), NOSPLIT, $0-0 |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| STOSQ |
| RET |
| |
| // A Duff's device for copying memory. |
| // The compiler jumps to computed addresses within |
| // this routine to copy chunks of memory. Source |
| // and destination must not overlap. Do not |
| // change this code without also changing the code |
| // in ../../cmd/6g/cgen.c:sgen. |
| // SI: ptr to source memory |
| // DI: ptr to destination memory |
| // SI and DI are updated as a side effect. |
| |
| // NOTE: this is equivalent to a sequence of MOVSQ but |
| // for some reason that is 3.5x slower than this code. |
| // The STOSQ above seem fine, though. |
| TEXT runtime·duffcopy(SB), NOSPLIT, $0-0 |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| MOVQ (SI),CX |
| ADDQ $8,SI |
| MOVQ CX,(DI) |
| ADDQ $8,DI |
| |
| RET |
| |
| TEXT runtime·fastrand1(SB), NOSPLIT, $0-4 |
| get_tls(CX) |
| MOVQ g(CX), AX |
| MOVQ g_m(AX), AX |
| MOVL m_fastrand(AX), DX |
| ADDL DX, DX |
| MOVL DX, BX |
| XORL $0x88888eef, DX |
| CMOVLMI BX, DX |
| MOVL DX, m_fastrand(AX) |
| MOVL DX, ret+0(FP) |
| RET |
| |
| TEXT runtime·return0(SB), NOSPLIT, $0 |
| MOVL $0, AX |
| RET |
| |
| |
| // Called from cgo wrappers, this function returns g->m->curg.stack.hi. |
| // Must obey the gcc calling convention. |
| TEXT _cgo_topofstack(SB),NOSPLIT,$0 |
| get_tls(CX) |
| MOVQ g(CX), AX |
| MOVQ g_m(AX), AX |
| MOVQ m_curg(AX), AX |
| MOVQ (g_stack+stack_hi)(AX), AX |
| RET |
| |
| // The top-most function running on a goroutine |
| // returns to goexit+PCQuantum. |
| TEXT runtime·goexit(SB),NOSPLIT,$0-0 |
| BYTE $0x90 // NOP |
| CALL runtime·goexit1(SB) // does not return |
