| // Copyright 2018 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. |
| |
| // +build msan |
| |
| #include "go_asm.h" |
| #include "textflag.h" |
| |
| #define RARG0 R0 |
| #define RARG1 R1 |
| #define FARG R3 |
| |
| // func runtime·domsanread(addr unsafe.Pointer, sz uintptr) |
| // Called from msanread. |
| TEXT runtime·domsanread(SB), NOSPLIT, $0-16 |
| MOVD addr+0(FP), RARG0 |
| MOVD size+8(FP), RARG1 |
| // void __msan_read_go(void *addr, uintptr_t sz); |
| MOVD $__msan_read_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanwrite(addr unsafe.Pointer, sz uintptr) |
| // Called from instrumented code. |
| TEXT runtime·msanwrite(SB), NOSPLIT, $0-16 |
| MOVD addr+0(FP), RARG0 |
| MOVD size+8(FP), RARG1 |
| // void __msan_write_go(void *addr, uintptr_t sz); |
| MOVD $__msan_write_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanmalloc(addr unsafe.Pointer, sz uintptr) |
| TEXT runtime·msanmalloc(SB), NOSPLIT, $0-16 |
| MOVD addr+0(FP), RARG0 |
| MOVD size+8(FP), RARG1 |
| // void __msan_malloc_go(void *addr, uintptr_t sz); |
| MOVD $__msan_malloc_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanfree(addr unsafe.Pointer, sz uintptr) |
| TEXT runtime·msanfree(SB), NOSPLIT, $0-16 |
| MOVD addr+0(FP), RARG0 |
| MOVD size+8(FP), RARG1 |
| // void __msan_free_go(void *addr, uintptr_t sz); |
| MOVD $__msan_free_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // Switches SP to g0 stack and calls (FARG). Arguments already set. |
| TEXT msancall<>(SB), NOSPLIT, $0-0 |
| MOVD RSP, R19 // callee-saved |
| CBZ g, g0stack // no g, still on a system stack |
| MOVD g_m(g), R10 |
| MOVD m_g0(R10), R11 |
| CMP R11, g |
| BEQ g0stack |
| |
| MOVD (g_sched+gobuf_sp)(R11), R4 |
| MOVD R4, RSP |
| |
| g0stack: |
| BL (FARG) |
| MOVD R19, RSP |
| RET |
