1 /* Save current context.
2 Copyright (C) 2009-2015 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 <http://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 NESTED (__getcontext, FRAMESZ, ra)
52 # if _MIPS_SIM != _ABIO32
57 PTR_ADDIU sp, -FRAMESZ
58 cfi_adjust_cfa_offset (FRAMESZ)
59 SETUP_GP64_STACK (GPOFF, __getcontext)
66 #endif /* ! __PIC__ */
75 /* Store a magic flag. */
77 REG_S v1, (0 * SZREG + MCONTEXT_GREGS)(a0) /* zero */
79 REG_S s0, (16 * SZREG + MCONTEXT_GREGS)(a0)
80 REG_S s1, (17 * SZREG + MCONTEXT_GREGS)(a0)
81 REG_S s2, (18 * SZREG + MCONTEXT_GREGS)(a0)
82 REG_S s3, (19 * SZREG + MCONTEXT_GREGS)(a0)
83 REG_S s4, (20 * SZREG + MCONTEXT_GREGS)(a0)
84 REG_S s5, (21 * SZREG + MCONTEXT_GREGS)(a0)
85 REG_S s6, (22 * SZREG + MCONTEXT_GREGS)(a0)
86 REG_S s7, (23 * SZREG + MCONTEXT_GREGS)(a0)
87 #if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
88 REG_S _GP, (28 * SZREG + MCONTEXT_GREGS)(a0)
90 REG_S _SP, (29 * SZREG + MCONTEXT_GREGS)(a0)
91 REG_S fp, (30 * SZREG + MCONTEXT_GREGS)(a0)
92 REG_S ra, (31 * SZREG + MCONTEXT_GREGS)(a0)
93 REG_S ra, MCONTEXT_PC(a0)
95 #ifdef __mips_hard_float
96 # if _MIPS_SIM == _ABI64
97 s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
98 s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
99 s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
100 s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
101 s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
102 s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
103 s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
104 s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
106 # else /* _MIPS_SIM != _ABI64 */
107 s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
108 s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
109 s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
110 s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
111 s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
112 s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
114 # endif /* _MIPS_SIM != _ABI64 */
117 sw v1, MCONTEXT_FPC_CSR(a0)
118 #endif /* __mips_hard_float */
120 /* rt_sigprocmask (SIG_BLOCK, NULL, &ucp->uc_sigmask, _NSIG8) */
122 PTR_ADDU a2, a0, UCONTEXT_SIGMASK
126 li v0, SYS_ify (rt_sigprocmask)
133 PTR_ADDIU sp, FRAMESZ
134 cfi_adjust_cfa_offset (-FRAMESZ)
142 PTR_LA t9, JUMPTARGET (__syscall_error)
144 PTR_ADDIU sp, FRAMESZ
145 cfi_adjust_cfa_offset (-FRAMESZ)
148 #else /* ! __PIC__ */
150 j JUMPTARGET (__syscall_error)
151 #endif /* ! __PIC__ */
152 PSEUDO_END (__getcontext)
154 weak_alias (__getcontext, getcontext)