1 // Copyright 2021 The Go Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style
3 // license that can be found in the LICENSE file.
12 // This is like race_amd64.s, but for the asan calls.
13 // See race_amd64.s for detailed comments.
27 // Called from instrumented code.
28 // func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
29 TEXT runtime·doasanread(SB), NOSPLIT, $0-32
30 MOVQ addr+0(FP), RARG0
31 MOVQ size+8(FP), RARG1
34 // void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
35 MOVQ $__asan_read_go(SB), AX
38 // func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
39 TEXT runtime·doasanwrite(SB), NOSPLIT, $0-32
40 MOVQ addr+0(FP), RARG0
41 MOVQ size+8(FP), RARG1
44 // void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc);
45 MOVQ $__asan_write_go(SB), AX
48 // func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
49 TEXT runtime·asanunpoison(SB), NOSPLIT, $0-16
50 MOVQ addr+0(FP), RARG0
51 MOVQ size+8(FP), RARG1
52 // void __asan_unpoison_go(void *addr, uintptr_t sz);
53 MOVQ $__asan_unpoison_go(SB), AX
56 // func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
57 TEXT runtime·asanpoison(SB), NOSPLIT, $0-16
58 MOVQ addr+0(FP), RARG0
59 MOVQ size+8(FP), RARG1
60 // void __asan_poison_go(void *addr, uintptr_t sz);
61 MOVQ $__asan_poison_go(SB), AX
64 // func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
65 TEXT runtime·asanregisterglobals(SB), NOSPLIT, $0-16
66 MOVQ addr+0(FP), RARG0
67 MOVQ size+8(FP), RARG1
68 // void __asan_register_globals_go(void *addr, uintptr_t n);
69 MOVQ $__asan_register_globals_go(SB), AX
72 // Switches SP to g0 stack and calls (AX). Arguments already set.
73 TEXT asancall<>(SB), NOSPLIT, $0-0
76 MOVQ SP, R12 // callee-saved, preserved across the CALL
78 JE call // no g; still on a system stack
81 // Switch to g0 stack.
84 JE call // already on g0
86 MOVQ (g_sched+gobuf_sp)(R10), SP
88 ANDQ $~15, SP // alignment for gcc ABI