mirror of https://go.googlesource.com/go
77 lines
2.1 KiB
ArmAsm
77 lines
2.1 KiB
ArmAsm
// Copyright 2021 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 asan
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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 RARG2 R2
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#define RARG3 R3
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#define FARG R4
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// Called from instrumented code.
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// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
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TEXT runtime·doasanread(SB), NOSPLIT, $0-32
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MOVD addr+0(FP), RARG0
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MOVD sz+8(FP), RARG1
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MOVD sp+16(FP), RARG2
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MOVD pc+24(FP), RARG3
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// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
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MOVD $__asan_read_go(SB), FARG
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JMP asancall<>(SB)
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// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
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TEXT runtime·doasanwrite(SB), NOSPLIT, $0-32
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MOVD addr+0(FP), RARG0
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MOVD sz+8(FP), RARG1
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MOVD sp+16(FP), RARG2
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MOVD pc+24(FP), RARG3
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// void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc);
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MOVD $__asan_write_go(SB), FARG
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JMP asancall<>(SB)
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// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
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TEXT runtime·asanunpoison(SB), NOSPLIT, $0-16
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MOVD addr+0(FP), RARG0
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MOVD sz+8(FP), RARG1
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// void __asan_unpoison_go(void *addr, uintptr_t sz);
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MOVD $__asan_unpoison_go(SB), FARG
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JMP asancall<>(SB)
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// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
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TEXT runtime·asanpoison(SB), NOSPLIT, $0-16
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MOVD addr+0(FP), RARG0
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MOVD sz+8(FP), RARG1
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// void __asan_poison_go(void *addr, uintptr_t sz);
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MOVD $__asan_poison_go(SB), FARG
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JMP asancall<>(SB)
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// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
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TEXT runtime·asanregisterglobals(SB), NOSPLIT, $0-16
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MOVD addr+0(FP), RARG0
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MOVD n+8(FP), RARG1
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// void __asan_register_globals_go(void *addr, uintptr_t n);
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MOVD $__asan_register_globals_go(SB), FARG
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JMP asancall<>(SB)
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// Switches SP to g0 stack and calls (FARG). Arguments already set.
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TEXT asancall<>(SB), NOSPLIT, $0-0
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MOVD RSP, R19 // callee-saved
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CBZ g, g0stack // no g, still on a system stack
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MOVD g_m(g), R10
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MOVD m_g0(R10), R11
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CMP R11, g
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BEQ g0stack
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MOVD (g_sched+gobuf_sp)(R11), R5
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MOVD R5, 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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