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
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
|
/* Copyright (C) 1997-2021 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Richard Henderson <richard@gnu.ai.mit.edu>, 1997.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
The GNU C Library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with the GNU C Library; if not, see
<https://www.gnu.org/licenses/>. */
#ifndef _LINUX_SPARC64_SYSDEP_H
#define _LINUX_SPARC64_SYSDEP_H 1
#include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
#if IS_IN (rtld)
# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
#endif
#include <tls.h>
#undef SYS_ify
#define SYS_ify(syscall_name) __NR_##syscall_name
#ifdef __ASSEMBLER__
#define LOADSYSCALL(x) mov __NR_##x, %g1
#undef PSEUDO
#define PSEUDO(name, syscall_name, args) \
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d; \
bcc,pt %xcc, 1f; \
nop; \
SYSCALL_ERROR_HANDLER \
1:
#undef PSEUDO_NOERRNO
#define PSEUDO_NOERRNO(name, syscall_name, args)\
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d;
#undef PSEUDO_ERRVAL
#define PSEUDO_ERRVAL(name, syscall_name, args) \
.text; \
ENTRY(name); \
LOADSYSCALL(syscall_name); \
ta 0x6d;
#undef PSEUDO_END
#define PSEUDO_END(name) \
END(name)
#ifndef PIC
# define SYSCALL_ERROR_HANDLER \
mov %o7, %g1; \
call __syscall_error; \
mov %g1, %o7;
#else
# if RTLD_PRIVATE_ERRNO
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %gdop_hix22(rtld_errno), %g1; \
xor %g1, %gdop_lox10(rtld_errno), %g1;\
ldx [%o2 + %g1], %g1, %gdop(rtld_errno); \
st %o0, [%g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# elif defined _LIBC_REENTRANT
# if IS_IN (libc)
# define SYSCALL_ERROR_ERRNO __libc_errno
# else
# define SYSCALL_ERROR_ERRNO errno
# endif
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
ldx [%o2 + %g1], %g1, %tie_ldx(SYSCALL_ERROR_ERRNO);\
st %o0, [%g7 + %g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# else
# define SYSCALL_ERROR_HANDLER \
0: SETUP_PIC_REG_LEAF(o2,g1) \
sethi %gdop_hix22(errno), %g1;\
xor %g1, %gdop_lox10(errno), %g1;\
ldx [%o2 + %g1], %g1, %gdop(errno);\
st %o0, [%g1]; \
jmp %o7 + 8; \
mov -1, %o0;
# endif /* _LIBC_REENTRANT */
#endif /* PIC */
#else /* __ASSEMBLER__ */
#define __SYSCALL_STRING \
"ta 0x6d;" \
"bcc,pt %%xcc, 1f;" \
" nop;" \
"sub %%g0, %%o0, %%o0;" \
"1:"
#define __SYSCALL_CLOBBERS \
"f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
"f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
"f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
"f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
"f32", "f34", "f36", "f38", "f40", "f42", "f44", "f46", \
"f48", "f50", "f52", "f54", "f56", "f58", "f60", "f62", \
"cc", "memory"
#endif /* __ASSEMBLER__ */
/* This is the offset from the %sp to the backing store above the
register windows. So if you poke stack memory directly you add this. */
#define STACK_BIAS 2047
/* Pointer mangling support. */
#if IS_IN (rtld)
/* We cannot use the thread descriptor because in ld.so we use setjmp
earlier than the descriptor is initialized. */
#else
# ifdef __ASSEMBLER__
# define PTR_MANGLE(dreg, reg, tmpreg) \
ldx [%g7 + POINTER_GUARD], tmpreg; \
xor reg, tmpreg, dreg
# define PTR_DEMANGLE(dreg, reg, tmpreg) PTR_MANGLE (dreg, reg, tmpreg)
# define PTR_MANGLE2(dreg, reg, tmpreg) \
xor reg, tmpreg, dreg
# define PTR_DEMANGLE2(dreg, reg, tmpreg) PTR_MANGLE2 (dreg, reg, tmpreg)
# else
# define PTR_MANGLE(var) \
(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
# define PTR_DEMANGLE(var) PTR_MANGLE (var)
# endif
#endif
#endif /* linux/sparc64/sysdep.h */
|
