asan_riscv64.s

Documentation: runtime

     1// Copyright 2022 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.
     4
     5//go:build asan
     6
     7#include "go_asm.h"
     8#include "textflag.h"
     9
    10// Called from instrumented code.
    11// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
    12TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
    13	MOV	addr+0(FP), X10
    14	MOV	sz+8(FP), X11
    15	MOV	sp+16(FP), X12
    16	MOV	pc+24(FP), X13
    17	// void __asan_read_go(void *addr, uintptr_t sz);
    18	MOV	$__asan_read_go(SB), X14
    19	JMP	asancall<>(SB)
    20
    21// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
    22TEXT	runtime·doasanwrite(SB), NOSPLIT, $0-32
    23	MOV	addr+0(FP), X10
    24	MOV	sz+8(FP), X11
    25	MOV	sp+16(FP), X12
    26	MOV	pc+24(FP), X13
    27	// void __asan_write_go(void *addr, uintptr_t sz);
    28	MOV	$__asan_write_go(SB), X14
    29	JMP	asancall<>(SB)
    30
    31// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
    32TEXT	runtime·asanunpoison(SB), NOSPLIT, $0-16
    33	MOV	addr+0(FP), X10
    34	MOV	sz+8(FP), X11
    35	// void __asan_unpoison_go(void *addr, uintptr_t sz);
    36	MOV	$__asan_unpoison_go(SB), X14
    37	JMP	asancall<>(SB)
    38
    39// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
    40TEXT	runtime·asanpoison(SB), NOSPLIT, $0-16
    41	MOV	addr+0(FP), X10
    42	MOV	sz+8(FP), X11
    43	// void __asan_poison_go(void *addr, uintptr_t sz);
    44	MOV	$__asan_poison_go(SB), X14
    45	JMP	asancall<>(SB)
    46
    47// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
    48TEXT	runtime·asanregisterglobals(SB), NOSPLIT, $0-16
    49	MOV	addr+0(FP), X10
    50	MOV	n+8(FP), X11
    51	// void __asan_register_globals_go(void *addr, uintptr_t n);
    52	MOV	$__asan_register_globals_go(SB), X14
    53	JMP	asancall<>(SB)
    54
    55// Switches SP to g0 stack and calls (X14). Arguments already set.
    56TEXT	asancall<>(SB), NOSPLIT, $0-0
    57	MOV	X2, X8		// callee-saved
    58	BEQZ	g, g0stack	// no g, still on a system stack
    59	MOV	g_m(g), X21
    60	MOV	m_g0(X21), X21
    61	BEQ	X21, g, g0stack
    62
    63	MOV	(g_sched+gobuf_sp)(X21), X2
    64
    65g0stack:
    66	JALR	RA, X14
    67	MOV	X8, X2
    68	RET
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