asan_loong64.s

Documentation: runtime

     1// Copyright 2023 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#define RARG0 R4
    11#define RARG1 R5
    12#define RARG2 R6
    13#define RARG3 R7
    14#define FARG  R8
    15
    16// Called from instrumented code.
    17// func runtime·doasanread(addr unsafe.Pointer, sz, sp, pc uintptr)
    18TEXT	runtime·doasanread(SB), NOSPLIT, $0-32
    19	MOVV	addr+0(FP), RARG0
    20	MOVV	sz+8(FP), RARG1
    21	MOVV	sp+16(FP), RARG2
    22	MOVV	pc+24(FP), RARG3
    23	// void __asan_read_go(void *addr, uintptr_t sz, void *sp, void *pc);
    24	MOVV	$__asan_read_go(SB), FARG
    25	JMP	asancall<>(SB)
    26
    27// func runtime·doasanwrite(addr unsafe.Pointer, sz, sp, pc uintptr)
    28TEXT	runtime·doasanwrite(SB), NOSPLIT, $0-32
    29	MOVV	addr+0(FP), RARG0
    30	MOVV	sz+8(FP), RARG1
    31	MOVV	sp+16(FP), RARG2
    32	MOVV	pc+24(FP), RARG3
    33	// void __asan_write_go(void *addr, uintptr_t sz, void *sp, void *pc);
    34	MOVV	$__asan_write_go(SB), FARG
    35	JMP	asancall<>(SB)
    36
    37// func runtime·asanunpoison(addr unsafe.Pointer, sz uintptr)
    38TEXT	runtime·asanunpoison(SB), NOSPLIT, $0-16
    39	MOVV	addr+0(FP), RARG0
    40	MOVV	sz+8(FP), RARG1
    41	// void __asan_unpoison_go(void *addr, uintptr_t sz);
    42	MOVV	$__asan_unpoison_go(SB), FARG
    43	JMP	asancall<>(SB)
    44
    45// func runtime·asanpoison(addr unsafe.Pointer, sz uintptr)
    46TEXT	runtime·asanpoison(SB), NOSPLIT, $0-16
    47	MOVV	addr+0(FP), RARG0
    48	MOVV	sz+8(FP), RARG1
    49	// void __asan_poison_go(void *addr, uintptr_t sz);
    50	MOVV	$__asan_poison_go(SB), FARG
    51	JMP	asancall<>(SB)
    52
    53// func runtime·asanregisterglobals(addr unsafe.Pointer, n uintptr)
    54TEXT	runtime·asanregisterglobals(SB), NOSPLIT, $0-16
    55	MOVV	addr+0(FP), RARG0
    56	MOVV	n+8(FP), RARG1
    57	// void __asan_register_globals_go(void *addr, uintptr_t n);
    58	MOVV	$__asan_register_globals_go(SB), FARG
    59	JMP	asancall<>(SB)
    60
    61// Switches SP to g0 stack and calls (FARG). Arguments already set.
    62TEXT	asancall<>(SB), NOSPLIT, $0-0
    63	MOVV	R3, R23         // callee-saved
    64	BEQ	g, g0stack      // no g, still on a system stack
    65	MOVV	g_m(g), R14
    66	MOVV	m_g0(R14), R15
    67	BEQ	R15, g, g0stack
    68
    69	MOVV	(g_sched+gobuf_sp)(R15), R9
    70	MOVV	R9, R3
    71
    72g0stack:
    73	JAL	(FARG)
    74	MOVV	R23, R3
    75	RET
View as plain text