1 /* Save current context.
2 Copyright (C) 2009-2019 Free Software Foundation, Inc.
3 This file is part of the GNU C Library.
4 Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
6 The GNU C Library is free software; you can redistribute it and/or
7 modify it under the terms of the GNU Lesser General Public
8 License as published by the Free Software Foundation; either
9 version 2.1 of the License, or (at your option) any later version.
11 The GNU C Library is distributed in the hope that it will be useful,
12 but WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 Lesser General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public
17 License along with the GNU C Library. If not, see
18 <https://www.gnu.org/licenses/>. */
22 #include <sys/fpregdef.h>
23 #include <sys/regdef.h>
25 #include "ucontext_i.h"
27 /* int getcontext (ucontext_t *ucp) */
34 LOCALSZ = 1 /* save gp */
35 # if _MIPS_SIM != _ABIO32
39 FRAMESZ = ((LOCALSZ * SZREG) + ALSZ) & ALMASK
40 GPOFF = FRAMESZ - (1 * SZREG)
42 #if _MIPS_SIM == _ABIO32 && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
48 NESTED (__getcontext, FRAMESZ, ra)
58 # if _MIPS_SIM != _ABIO32
63 PTR_ADDIU sp, -FRAMESZ
64 cfi_adjust_cfa_offset (FRAMESZ)
65 SETUP_GP64_STACK (GPOFF, __getcontext)
72 #endif /* ! __PIC__ */
81 REG_S s0, (MCONTEXT_GREGOFF + 16 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
82 REG_S s1, (MCONTEXT_GREGOFF + 17 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
83 REG_S s2, (MCONTEXT_GREGOFF + 18 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
84 REG_S s3, (MCONTEXT_GREGOFF + 19 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
85 REG_S s4, (MCONTEXT_GREGOFF + 20 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
86 REG_S s5, (MCONTEXT_GREGOFF + 21 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
87 REG_S s6, (MCONTEXT_GREGOFF + 22 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
88 REG_S s7, (MCONTEXT_GREGOFF + 23 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
89 #if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
90 REG_S _GP, (MCONTEXT_GREGOFF + 28 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
92 REG_S _SP, (MCONTEXT_GREGOFF + 29 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
93 REG_S fp, (MCONTEXT_GREGOFF + 30 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
94 REG_S ra, (MCONTEXT_GREGOFF + 31 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
95 REG_S ra, (MCONTEXT_GREGOFF + MCONTEXT_PC)(a0)
97 #ifdef __mips_hard_float
98 # if _MIPS_SIM == _ABI64
99 s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
100 s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
101 s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
102 s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
103 s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
104 s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
105 s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
106 s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
108 # else /* _MIPS_SIM != _ABI64 */
109 s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
110 s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
111 s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
112 s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
113 s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
114 s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
116 # endif /* _MIPS_SIM != _ABI64 */
119 sw v1, MCONTEXT_FPC_CSR(a0)
120 #endif /* __mips_hard_float */
122 /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
124 PTR_ADDU a2, a0, UCONTEXT_SIGMASK
128 li v0, SYS_ify (rt_sigprocmask)
135 PTR_ADDIU sp, FRAMESZ
136 cfi_adjust_cfa_offset (-FRAMESZ)
144 PTR_LA t9, JUMPTARGET (__syscall_error)
146 PTR_ADDIU sp, FRAMESZ
147 cfi_adjust_cfa_offset (-FRAMESZ)
150 #else /* ! __PIC__ */
152 j JUMPTARGET (__syscall_error)
153 #endif /* ! __PIC__ */
154 PSEUDO_END (__getcontext)
156 weak_alias (__getcontext, getcontext)