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| // 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 g_m(g), R10
| MOVD m_g0(R10), R11
| MOVD RSP, R19 // callee-saved
| CMP R11, g
| BEQ g0stack
|
| MOVD (g_sched+gobuf_sp)(R11), R4
| MOVD R4, RSP
|
| g0stack:
| BL (FARG)
| MOVD R19, RSP
| RET
|
|
