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Diffstat (limited to '')
| -rw-r--r-- | src/runtime/msan_loong64.s | 72 |
1 files changed, 72 insertions, 0 deletions
diff --git a/src/runtime/msan_loong64.s b/src/runtime/msan_loong64.s new file mode 100644 index 0000000..b9fa5fd --- /dev/null +++ b/src/runtime/msan_loong64.s @@ -0,0 +1,72 @@ +// 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 |