1/* Copyright (C) 1997-2026 Free Software Foundation, Inc.
2 This file is part of the GNU C Library.
3
4 The GNU C Library is free software; you can redistribute it and/or
5 modify it under the terms of the GNU Lesser General Public
6 License as published by the Free Software Foundation; either
7 version 2.1 of the License, or (at your option) any later version.
8
9 The GNU C Library is distributed in the hope that it will be useful,
10 but WITHOUT ANY WARRANTY; without even the implied warranty of
11 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
12 Lesser General Public License for more details.
13
14 You should have received a copy of the GNU Lesser General Public
15 License along with the GNU C Library; if not, see
16 <https://www.gnu.org/licenses/>. */
17
18#ifndef _LINUX_SPARC32_SYSDEP_H
19#define _LINUX_SPARC32_SYSDEP_H 1
20
21#include <sysdeps/unix/sysv/linux/sparc/sysdep.h>
22
23#if IS_IN (rtld)
24# include <dl-sysdep.h> /* Defines RTLD_PRIVATE_ERRNO. */
25#endif
26#include <tls.h>
27
28#undef SYS_ify
29#define SYS_ify(syscall_name) __NR_##syscall_name
30
31#ifdef __ASSEMBLER__
32
33#define LOADSYSCALL(x) mov __NR_##x, %g1
34
35#undef PSEUDO
36#define PSEUDO(name, syscall_name, args) \
37 .text; \
38ENTRY(name); \
39 LOADSYSCALL(syscall_name); \
40 ta 0x10; \
41 bcc 1f; \
42 nop; \
43 SYSCALL_ERROR_HANDLER \
441:
45
46#undef PSEUDO_NOERRNO
47#define PSEUDO_NOERRNO(name, syscall_name, args)\
48 .text; \
49ENTRY(name); \
50 LOADSYSCALL(syscall_name); \
51 ta 0x10;
52
53#undef PSEUDO_ERRVAL
54#define PSEUDO_ERRVAL(name, syscall_name, args) \
55 .text; \
56ENTRY(name); \
57 LOADSYSCALL(syscall_name); \
58 ta 0x10;
59
60#undef PSEUDO_END
61#define PSEUDO_END(name) \
62 END(name)
63
64#ifndef PIC
65# define SYSCALL_ERROR_HANDLER \
66 mov %o7, %g1; \
67 call __syscall_error; \
68 mov %g1, %o7;
69#else
70# if RTLD_PRIVATE_ERRNO
71# define SYSCALL_ERROR_HANDLER \
720: SETUP_PIC_REG_LEAF(o2,g1) \
73 sethi %gdop_hix22(rtld_errno), %g1; \
74 xor %g1, %gdop_lox10(rtld_errno), %g1;\
75 ld [%o2 + %g1], %g1, %gdop(rtld_errno); \
76 st %o0, [%g1]; \
77 jmp %o7 + 8; \
78 mov -1, %o0;
79# elif defined _LIBC_REENTRANT
80
81# if IS_IN (libc)
82# define SYSCALL_ERROR_ERRNO __libc_errno
83# else
84# define SYSCALL_ERROR_ERRNO errno
85# endif
86# define SYSCALL_ERROR_HANDLER \
870: SETUP_PIC_REG_LEAF(o2,g1) \
88 sethi %tie_hi22(SYSCALL_ERROR_ERRNO), %g1; \
89 add %g1, %tie_lo10(SYSCALL_ERROR_ERRNO), %g1; \
90 ld [%o2 + %g1], %g1, %tie_ld(SYSCALL_ERROR_ERRNO); \
91 st %o0, [%g7 + %g1]; \
92 jmp %o7 + 8; \
93 mov -1, %o0;
94# else
95# define SYSCALL_ERROR_HANDLER \
960: SETUP_PIC_REG_LEAF(o2,g1) \
97 sethi %gdop_hix22(errno), %g1;\
98 xor %g1, %gdop_lox10(errno), %g1;\
99 ld [%o2 + %g1], %g1, %gdop(errno);\
100 st %o0, [%g1]; \
101 jmp %o7 + 8; \
102 mov -1, %o0;
103# endif /* _LIBC_REENTRANT */
104#endif /* PIC */
105
106
107#else /* __ASSEMBLER__ */
108
109#define __SYSCALL_STRING \
110 "mov %[scn], %%g1;" \
111 "ta 0x10;" \
112 "bcc 1f;" \
113 " nop;" \
114 "sub %%g0, %%o0, %%o0;" \
115 "1:"
116
117#define __SYSCALL_CLOBBERS \
118 "g1", "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7", \
119 "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15", \
120 "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23", \
121 "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31", \
122 "cc", "memory"
123
124#undef HAVE_INTERNAL_BRK_ADDR_SYMBOL
125#define HAVE_INTERNAL_BRK_ADDR_SYMBOL 1
126
127#endif /* __ASSEMBLER__ */
128
129#endif /* linux/sparc/sysdep.h */