mirror of https://go.googlesource.com/go
73 lines
2.0 KiB
ArmAsm
73 lines
2.0 KiB
ArmAsm
// Copyright 2023 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build msan
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#include "go_asm.h"
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#include "textflag.h"
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#define RARG0 R4
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#define RARG1 R5
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#define RARG2 R6
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#define FARG R7
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// func runtime·domsanread(addr unsafe.Pointer, sz uintptr)
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// Called from msanread.
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TEXT runtime·domsanread(SB), NOSPLIT, $0-16
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MOVV addr+0(FP), RARG0
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MOVV sz+8(FP), RARG1
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// void __msan_read_go(void *addr, uintptr_t sz);
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MOVV $__msan_read_go(SB), FARG
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JMP msancall<>(SB)
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// func runtime·msanwrite(addr unsafe.Pointer, sz uintptr)
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// Called from instrumented code.
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TEXT runtime·msanwrite(SB), NOSPLIT, $0-16
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MOVV addr+0(FP), RARG0
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MOVV sz+8(FP), RARG1
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// void __msan_write_go(void *addr, uintptr_t sz);
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MOVV $__msan_write_go(SB), FARG
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JMP msancall<>(SB)
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// func runtime·msanmalloc(addr unsafe.Pointer, sz uintptr)
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TEXT runtime·msanmalloc(SB), NOSPLIT, $0-16
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MOVV addr+0(FP), RARG0
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MOVV sz+8(FP), RARG1
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// void __msan_malloc_go(void *addr, uintptr_t sz);
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MOVV $__msan_malloc_go(SB), FARG
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JMP msancall<>(SB)
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// func runtime·msanfree(addr unsafe.Pointer, sz uintptr)
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TEXT runtime·msanfree(SB), NOSPLIT, $0-16
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MOVV addr+0(FP), RARG0
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MOVV sz+8(FP), RARG1
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// void __msan_free_go(void *addr, uintptr_t sz);
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MOVV $__msan_free_go(SB), FARG
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JMP msancall<>(SB)
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// func runtime·msanmove(dst, src unsafe.Pointer, sz uintptr)
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TEXT runtime·msanmove(SB), NOSPLIT, $0-24
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MOVV dst+0(FP), RARG0
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MOVV src+8(FP), RARG1
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MOVV sz+16(FP), RARG2
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// void __msan_memmove(void *dst, void *src, uintptr_t sz);
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MOVV $__msan_memmove(SB), FARG
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JMP msancall<>(SB)
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// Switches SP to g0 stack and calls (FARG). Arguments already set.
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TEXT msancall<>(SB), NOSPLIT, $0-0
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MOVV R3, R23 // callee-saved
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BEQ g, g0stack // no g, still on a system stack
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MOVV g_m(g), R14
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MOVV m_g0(R14), R15
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BEQ R15, g, g0stack
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MOVV (g_sched+gobuf_sp)(R15), R9
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MOVV R9, R3
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g0stack:
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JAL (FARG)
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MOVV R23, R3
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RET
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