Editando: asan_arm64.s
// Copyright 2021 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 asan #include "go_asm.h" #include "textflag.h" #define RARG0 R0 #define RARG1 R1 #define RARG2 R2 #define RARG3 R3 #define FARG R4 // Called from instrumented code. // func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr) TEXT runtime·doasanread(SB), NOSPLIT, $0-32 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 MOVD sp+16(FP), RARG2 MOVD pc+24(FP), RARG3 // void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc); MOVD $__asan_read_go(SB), FARG JMP asancall<>(SB) // func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr) TEXT runtime·doasanwrite(SB), NOSPLIT, $0-32 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 MOVD sp+16(FP), RARG2 MOVD pc+24(FP), RARG3 // void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc); MOVD $__asan_write_go(SB), FARG JMP asancall<>(SB) // func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr) TEXT runtime·asanunpoison(SB), NOSPLIT, $0-16 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 // void __asan_unpoison_go(void *addr, uintptr_t sz); MOVD $__asan_unpoison_go(SB), FARG JMP asancall<>(SB) // func runtime·asanpoison(addr unsafe.Pointer, sz uintptr) TEXT runtime·asanpoison(SB), NOSPLIT, $0-16 MOVD addr+0(FP), RARG0 MOVD sz+8(FP), RARG1 // void __asan_poison_go(void *addr, uintptr_t sz); MOVD $__asan_poison_go(SB), FARG JMP asancall<>(SB) // func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr) TEXT runtime·asanregisterglobals(SB), NOSPLIT, $0-16 MOVD addr+0(FP), RARG0 MOVD n+8(FP), RARG1 // void __asan_register_globals_go(void *addr, uintptr_t n); MOVD $__asan_register_globals_go(SB), FARG JMP asancall<>(SB) // Switches SP to g0 stack and calls (FARG). Arguments already set. TEXT asancall<>(SB), NOSPLIT, $0-0 MOVD RSP, R19 // callee-saved CBZ g, g0stack // no g, still on a system stack MOVD g_m(g), R10 MOVD m_g0(R10), R11 CMP R11, g BEQ g0stack MOVD (g_sched+gobuf_sp)(R11), R5 MOVD R5, RSP g0stack: BL (FARG) MOVD R19, RSP RET
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