| // Copyright 2023 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. |
| |
| //go:build msan |
| |
| #include "go_asm.h" |
| #include "textflag.h" |
| |
| #define RARG0 R4 |
| #define RARG1 R5 |
| #define RARG2 R6 |
| #define FARG R7 |
| |
| // func runtime·domsanread(addr unsafe.Pointer, sz uintptr) |
| // Called from msanread. |
| TEXT runtime·domsanread(SB), NOSPLIT, $0-16 |
| MOVV addr+0(FP), RARG0 |
| MOVV sz+8(FP), RARG1 |
| // void __msan_read_go(void *addr, uintptr_t sz); |
| MOVV $__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 |
| MOVV addr+0(FP), RARG0 |
| MOVV sz+8(FP), RARG1 |
| // void __msan_write_go(void *addr, uintptr_t sz); |
| MOVV $__msan_write_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanmalloc(addr unsafe.Pointer, sz uintptr) |
| TEXT runtime·msanmalloc(SB), NOSPLIT, $0-16 |
| MOVV addr+0(FP), RARG0 |
| MOVV sz+8(FP), RARG1 |
| // void __msan_malloc_go(void *addr, uintptr_t sz); |
| MOVV $__msan_malloc_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanfree(addr unsafe.Pointer, sz uintptr) |
| TEXT runtime·msanfree(SB), NOSPLIT, $0-16 |
| MOVV addr+0(FP), RARG0 |
| MOVV sz+8(FP), RARG1 |
| // void __msan_free_go(void *addr, uintptr_t sz); |
| MOVV $__msan_free_go(SB), FARG |
| JMP msancall<>(SB) |
| |
| // func runtime·msanmove(dst, src unsafe.Pointer, sz uintptr) |
| TEXT runtime·msanmove(SB), NOSPLIT, $0-24 |
| MOVV dst+0(FP), RARG0 |
| MOVV src+8(FP), RARG1 |
| MOVV sz+16(FP), RARG2 |
| // void __msan_memmove(void *dst, void *src, uintptr_t sz); |
| MOVV $__msan_memmove(SB), FARG |
| JMP msancall<>(SB) |
| |
| // Switches SP to g0 stack and calls (FARG). Arguments already set. |
| TEXT msancall<>(SB), NOSPLIT, $0-0 |
| MOVV R3, R23 // callee-saved |
| BEQ g, g0stack // no g, still on a system stack |
| MOVV g_m(g), R14 |
| MOVV m_g0(R14), R15 |
| BEQ R15, g, g0stack |
| |
| MOVV (g_sched+gobuf_sp)(R15), R9 |
| MOVV R9, R3 |
| |
| g0stack: |
| JAL (FARG) |
| MOVV R23, R3 |
| RET |
