| // Copyright 2015 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 "textflag.h" | |
| // Called by C code generated by cmd/cgo. | |
| // func crosscall2(fn func(a unsafe.Pointer, n int32, ctxt uintptr), a unsafe.Pointer, n int32, ctxt uintptr) | |
| // Saves C callee-saved registers and calls fn with three arguments. | |
| TEXT crosscall2(SB),NOSPLIT|NOFRAME,$0 | |
| /* | |
| * We still need to save all callee save register as before, and then | |
| * push 3 args for fn (R1, R2, R3). | |
| * Also note that at procedure entry in gc world, 8(RSP) will be the | |
| * first arg. | |
| * TODO(minux): use LDP/STP here if it matters. | |
| */ | |
| SUB $(8*24), RSP | |
| MOVD R1, (8*1)(RSP) | |
| MOVD R2, (8*2)(RSP) | |
| MOVD R3, (8*3)(RSP) | |
| MOVD R19, (8*4)(RSP) | |
| MOVD R20, (8*5)(RSP) | |
| MOVD R21, (8*6)(RSP) | |
| MOVD R22, (8*7)(RSP) | |
| MOVD R23, (8*8)(RSP) | |
| MOVD R24, (8*9)(RSP) | |
| MOVD R25, (8*10)(RSP) | |
| MOVD R26, (8*11)(RSP) | |
| MOVD R27, (8*12)(RSP) | |
| MOVD g, (8*13)(RSP) | |
| MOVD R29, (8*14)(RSP) | |
| MOVD R30, (8*15)(RSP) | |
| FMOVD F8, (8*16)(RSP) | |
| FMOVD F9, (8*17)(RSP) | |
| FMOVD F10, (8*18)(RSP) | |
| FMOVD F11, (8*19)(RSP) | |
| FMOVD F12, (8*20)(RSP) | |
| FMOVD F13, (8*21)(RSP) | |
| FMOVD F14, (8*22)(RSP) | |
| FMOVD F15, (8*23)(RSP) | |
| MOVD R0, R19 | |
| // Initialize Go ABI environment | |
| BL runtime·load_g(SB) | |
| BL (R19) | |
| MOVD (8*1)(RSP), R1 | |
| MOVD (8*2)(RSP), R2 | |
| MOVD (8*3)(RSP), R3 | |
| MOVD (8*4)(RSP), R19 | |
| MOVD (8*5)(RSP), R20 | |
| MOVD (8*6)(RSP), R21 | |
| MOVD (8*7)(RSP), R22 | |
| MOVD (8*8)(RSP), R23 | |
| MOVD (8*9)(RSP), R24 | |
| MOVD (8*10)(RSP), R25 | |
| MOVD (8*11)(RSP), R26 | |
| MOVD (8*12)(RSP), R27 | |
| MOVD (8*13)(RSP), g | |
| MOVD (8*14)(RSP), R29 | |
| MOVD (8*15)(RSP), R30 | |
| FMOVD (8*16)(RSP), F8 | |
| FMOVD (8*17)(RSP), F9 | |
| FMOVD (8*18)(RSP), F10 | |
| FMOVD (8*19)(RSP), F11 | |
| FMOVD (8*20)(RSP), F12 | |
| FMOVD (8*21)(RSP), F13 | |
| FMOVD (8*22)(RSP), F14 | |
| FMOVD (8*23)(RSP), F15 | |
| ADD $(8*24), RSP | |
| RET |