1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
|
// Copyright 2023 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 R4
#define RARG1 R5
#define RARG2 R6
#define RARG3 R7
#define FARG R8
// Called from instrumented code.
// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
TEXT runtime·doasanread(SB), NOSPLIT, $0-32
MOVV addr+0(FP), RARG0
MOVV sz+8(FP), RARG1
MOVV sp+16(FP), RARG2
MOVV pc+24(FP), RARG3
// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
MOVV $__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
MOVV addr+0(FP), RARG0
MOVV sz+8(FP), RARG1
MOVV sp+16(FP), RARG2
MOVV pc+24(FP), RARG3
// void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc);
MOVV $__asan_write_go(SB), FARG
JMP asancall<>(SB)
// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
TEXT runtime·asanunpoison(SB), NOSPLIT, $0-16
MOVV addr+0(FP), RARG0
MOVV sz+8(FP), RARG1
// void __asan_unpoison_go(void *addr, uintptr_t sz);
MOVV $__asan_unpoison_go(SB), FARG
JMP asancall<>(SB)
// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
TEXT runtime·asanpoison(SB), NOSPLIT, $0-16
MOVV addr+0(FP), RARG0
MOVV sz+8(FP), RARG1
// void __asan_poison_go(void *addr, uintptr_t sz);
MOVV $__asan_poison_go(SB), FARG
JMP asancall<>(SB)
// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
TEXT runtime·asanregisterglobals(SB), NOSPLIT, $0-16
MOVV addr+0(FP), RARG0
MOVV n+8(FP), RARG1
// void __asan_register_globals_go(void *addr, uintptr_t n);
MOVV $__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
MOVV R3, R23 // callee-saved
BEQ g, g0stack // no g, still on a system stack
MOVV g_m(g), R14
MOVV m_g0(R14), R15
BEQ R15, g, g0stack
MOVV (g_sched+gobuf_sp)(R15), R9
MOVV R9, R3
g0stack:
JAL (FARG)
MOVV R23, R3
RET
|
