qemu
130 строк · 3.1 Кб
1/*
2* Loongarch64 linux replacement vdso.
3*
4* Copyright 2023 Linaro, Ltd.
5*
6* SPDX-License-Identifier: GPL-2.0-or-later
7*/
8
9#include <asm/unistd.h>
10#include <asm/errno.h>
11#include "vdso-asmoffset.h"
12
13
14.text
15
16.macro endf name
17.globl \name
18.type \name, @function
19.size \name, . - \name
20.endm
21
22.macro vdso_syscall name, nr
23\name:
24li.w $a7, \nr
25syscall 0
26jr $ra
27endf \name
28.endm
29
30.cfi_startproc
31
32vdso_syscall __vdso_gettimeofday, __NR_gettimeofday
33vdso_syscall __vdso_clock_gettime, __NR_clock_gettime
34vdso_syscall __vdso_clock_getres, __NR_clock_getres
35vdso_syscall __vdso_getcpu, __NR_getcpu
36
37.cfi_endproc
38
39/*
40* Start the unwind info at least one instruction before the signal
41* trampoline, because the unwinder will assume we are returning
42* after a call site.
43*/
44
45.cfi_startproc simple
46.cfi_signal_frame
47
48#define B_GR offsetof_sigcontext_gr
49#define B_FR sizeof_sigcontext + sizeof_sctx_info + offsetof_fpucontext_fr
50
51.cfi_def_cfa 2, offsetof_sigcontext
52
53/* Return address */
54.cfi_return_column 64
55.cfi_offset 64, offsetof_sigcontext_pc /* pc */
56
57/* Integer registers */
58.cfi_offset 1, B_GR + 1 * 8
59.cfi_offset 2, B_GR + 2 * 8
60.cfi_offset 3, B_GR + 3 * 8
61.cfi_offset 4, B_GR + 4 * 8
62.cfi_offset 5, B_GR + 5 * 8
63.cfi_offset 6, B_GR + 6 * 8
64.cfi_offset 7, B_GR + 7 * 8
65.cfi_offset 8, B_GR + 8 * 8
66.cfi_offset 9, B_GR + 9 * 8
67.cfi_offset 10, B_GR + 10 * 8
68.cfi_offset 11, B_GR + 11 * 8
69.cfi_offset 12, B_GR + 12 * 8
70.cfi_offset 13, B_GR + 13 * 8
71.cfi_offset 14, B_GR + 14 * 8
72.cfi_offset 15, B_GR + 15 * 8
73.cfi_offset 16, B_GR + 16 * 8
74.cfi_offset 17, B_GR + 17 * 8
75.cfi_offset 18, B_GR + 18 * 8
76.cfi_offset 19, B_GR + 19 * 8
77.cfi_offset 20, B_GR + 20 * 8
78.cfi_offset 21, B_GR + 21 * 8
79.cfi_offset 22, B_GR + 22 * 8
80.cfi_offset 23, B_GR + 23 * 8
81.cfi_offset 24, B_GR + 24 * 8
82.cfi_offset 25, B_GR + 25 * 8
83.cfi_offset 26, B_GR + 26 * 8
84.cfi_offset 27, B_GR + 27 * 8
85.cfi_offset 28, B_GR + 28 * 8
86.cfi_offset 29, B_GR + 29 * 8
87.cfi_offset 30, B_GR + 30 * 8
88.cfi_offset 31, B_GR + 31 * 8
89
90/* Floating point registers */
91.cfi_offset 32, B_FR + 0
92.cfi_offset 33, B_FR + 1 * 8
93.cfi_offset 34, B_FR + 2 * 8
94.cfi_offset 35, B_FR + 3 * 8
95.cfi_offset 36, B_FR + 4 * 8
96.cfi_offset 37, B_FR + 5 * 8
97.cfi_offset 38, B_FR + 6 * 8
98.cfi_offset 39, B_FR + 7 * 8
99.cfi_offset 40, B_FR + 8 * 8
100.cfi_offset 41, B_FR + 9 * 8
101.cfi_offset 42, B_FR + 10 * 8
102.cfi_offset 43, B_FR + 11 * 8
103.cfi_offset 44, B_FR + 12 * 8
104.cfi_offset 45, B_FR + 13 * 8
105.cfi_offset 46, B_FR + 14 * 8
106.cfi_offset 47, B_FR + 15 * 8
107.cfi_offset 48, B_FR + 16 * 8
108.cfi_offset 49, B_FR + 17 * 8
109.cfi_offset 50, B_FR + 18 * 8
110.cfi_offset 51, B_FR + 19 * 8
111.cfi_offset 52, B_FR + 20 * 8
112.cfi_offset 53, B_FR + 21 * 8
113.cfi_offset 54, B_FR + 22 * 8
114.cfi_offset 55, B_FR + 23 * 8
115.cfi_offset 56, B_FR + 24 * 8
116.cfi_offset 57, B_FR + 25 * 8
117.cfi_offset 58, B_FR + 26 * 8
118.cfi_offset 59, B_FR + 27 * 8
119.cfi_offset 60, B_FR + 28 * 8
120.cfi_offset 61, B_FR + 29 * 8
121.cfi_offset 62, B_FR + 30 * 8
122.cfi_offset 63, B_FR + 31 * 8
123
124nop
125
126__vdso_rt_sigreturn:
127li.w $a7, __NR_rt_sigreturn
128syscall 0
129.cfi_endproc
130endf __vdso_rt_sigreturn
131