mirror of
https://github.com/golang/go
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63 lines
1.6 KiB
ArmAsm
63 lines
1.6 KiB
ArmAsm
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// Copyright 2018 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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// +build msan
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#include "go_asm.h"
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#include "textflag.h"
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#define RARG0 R0
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#define RARG1 R1
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#define FARG R3
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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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MOVD addr+0(FP), RARG0
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MOVD size+8(FP), RARG1
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// void __msan_read_go(void *addr, uintptr_t sz);
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MOVD $__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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MOVD addr+0(FP), RARG0
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MOVD size+8(FP), RARG1
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// void __msan_write_go(void *addr, uintptr_t sz);
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MOVD $__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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MOVD addr+0(FP), RARG0
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MOVD size+8(FP), RARG1
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// void __msan_malloc_go(void *addr, uintptr_t sz);
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MOVD $__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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MOVD addr+0(FP), RARG0
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MOVD size+8(FP), RARG1
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// void __msan_free_go(void *addr, uintptr_t sz);
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MOVD $__msan_free_go(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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MOVD g_m(g), R10
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MOVD m_g0(R10), R11
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MOVD RSP, R19 // callee-saved
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CMP R11, g
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BEQ g0stack
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MOVD (g_sched+gobuf_sp)(R11), R4
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MOVD R4, RSP
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g0stack:
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BL (FARG)
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MOVD R19, RSP
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RET
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