[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / mips / swapcontext.S

/* Save and set current context.
   Copyright (C) 2009-2019 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Maciej W. Rozycki <macro@codesourcery.com>.

   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/>.  */

#include <sysdep.h>
#include <sys/asm.h>
#include <sys/fpregdef.h>
#include <sys/regdef.h>

#include "ucontext_i.h"

/* int swapcontext (ucontext_t *oucp, const ucontext_t *ucp) */

	.text
	.set	nomips16
LOCALSZ = 0
ARGSZ = 0
MASK = 0x00000000
#ifdef __PIC__
LOCALSZ = 1						/* save gp */
#endif
#if _MIPS_SIM != _ABIO32
ARGSZ = 1						/* save a1 */
# ifdef __PIC__
MASK = 0x10000000
# endif
#endif
FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK
GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG)
#if _MIPS_SIM != _ABIO32
A1OFF = FRAMESZ - (1 * SZREG)				/* callee-allocated */
#else
A1OFF = FRAMESZ + (1 * SZREG)				/* caller-allocated */
#endif
MCONTEXT_GREGSZ = 8
#if _MIPS_SIM == _ABIO32 && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
MCONTEXT_GREGOFF = 4
#else
MCONTEXT_GREGOFF = 0
#endif

NESTED (__swapcontext, FRAMESZ, ra)
	.mask	MASK, -(ARGSZ * SZREG)
	.fmask	0x00000000, 0

#ifdef __PIC__
	SETUP_GP

	move	a2, sp
# define _SP a2

# if _MIPS_SIM != _ABIO32
	move	a3, gp
#  define _GP a3
# endif

	PTR_ADDIU sp, -FRAMESZ
	cfi_adjust_cfa_offset (FRAMESZ)
	SETUP_GP64_STACK (GPOFF, __swapcontext)
	SAVE_GP (GPOFF)

#else  /* ! __PIC__ */
# define _SP sp
# define _GP gp

#endif /* ! __PIC__ */

#ifdef PROF
	.set	noat
	move	AT, ra
	jal	_mcount
	.set	at
#endif

	REG_S	s0, (MCONTEXT_GREGOFF + 16 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s1, (MCONTEXT_GREGOFF + 17 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s2, (MCONTEXT_GREGOFF + 18 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s3, (MCONTEXT_GREGOFF + 19 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s4, (MCONTEXT_GREGOFF + 20 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s5, (MCONTEXT_GREGOFF + 21 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s6, (MCONTEXT_GREGOFF + 22 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	s7, (MCONTEXT_GREGOFF + 23 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
	REG_S	_GP, (MCONTEXT_GREGOFF + 28 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
#endif
	REG_S	_SP, (MCONTEXT_GREGOFF + 29 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	fp, (MCONTEXT_GREGOFF + 30 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	ra, (MCONTEXT_GREGOFF + 31 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	REG_S	ra, (MCONTEXT_GREGOFF + MCONTEXT_PC)(a0)

#ifdef __mips_hard_float
# if _MIPS_SIM == _ABI64
	s.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)

# else  /* _MIPS_SIM != _ABI64 */
	s.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
	s.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)

# endif /* _MIPS_SIM != _ABI64 */

	cfc1	v1, fcr31
	sw	v1, MCONTEXT_FPC_CSR(a0)
#endif /* __mips_hard_float */

	REG_S	a1, A1OFF(sp)

/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
	li	a3, _NSIG8
	PTR_ADDU a2, a0, UCONTEXT_SIGMASK
	PTR_ADDU a1, a1, UCONTEXT_SIGMASK
	li	a0, SIG_SETMASK

	li	v0, SYS_ify (rt_sigprocmask)
	syscall
	bnez	a3, 99f

	REG_L	v0, A1OFF(sp)

#ifdef __mips_hard_float
# if _MIPS_SIM == _ABI64
	l.d	fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0)

# else  /* _MIPS_SIM != _ABI64 */
	l.d	fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
	l.d	fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0)

# endif /* _MIPS_SIM != _ABI64 */

	lw	v1, MCONTEXT_FPC_CSR(v0)
	ctc1	v1, fcr31
#endif /* __mips_hard_float */

	/* Note the contents of argument registers will be random
	   unless makecontext() has been called.  */
	REG_L	a0, (MCONTEXT_GREGOFF + 4 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a1, (MCONTEXT_GREGOFF + 5 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a2, (MCONTEXT_GREGOFF + 6 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a3, (MCONTEXT_GREGOFF + 7 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
#if _MIPS_SIM != _ABIO32
	REG_L	a4, (MCONTEXT_GREGOFF + 8 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a5, (MCONTEXT_GREGOFF + 9 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a6, (MCONTEXT_GREGOFF + 10 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	a7, (MCONTEXT_GREGOFF + 11 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
#endif

	REG_L	s0, (MCONTEXT_GREGOFF + 16 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s1, (MCONTEXT_GREGOFF + 17 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s2, (MCONTEXT_GREGOFF + 18 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s3, (MCONTEXT_GREGOFF + 19 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s4, (MCONTEXT_GREGOFF + 20 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s5, (MCONTEXT_GREGOFF + 21 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s6, (MCONTEXT_GREGOFF + 22 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	s7, (MCONTEXT_GREGOFF + 23 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
#if ! defined (__PIC__) || _MIPS_SIM != _ABIO32
	REG_L	gp, (MCONTEXT_GREGOFF + 28 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
#endif
	REG_L	sp, (MCONTEXT_GREGOFF + 29 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	fp, (MCONTEXT_GREGOFF + 30 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	ra, (MCONTEXT_GREGOFF + 31 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	REG_L	t9, (MCONTEXT_GREGOFF + MCONTEXT_PC)(v0)

	move	v0, zero
	jr	t9

99:
#ifdef __PIC__
	PTR_LA	t9, JUMPTARGET (__syscall_error)
	RESTORE_GP64_STACK
	PTR_ADDIU sp, FRAMESZ
	cfi_adjust_cfa_offset (-FRAMESZ)
	jr	t9

#else  /* ! __PIC__ */

	j	JUMPTARGET (__syscall_error)
#endif /* ! __PIC__ */
PSEUDO_END (__swapcontext)

weak_alias (__swapcontext, swapcontext)
Commit	Line	Data
ff347533	1	/* Save and set current context.
04277e02	2	Copyright (C) 2009-2019 Free Software Foundation, Inc.
ff347533 JM	3	This file is part of the GNU C Library.
	4	Contributed by Maciej W. Rozycki <macro@codesourcery.com>.
	5
	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.
	10
	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.
	15
	16	You should have received a copy of the GNU Lesser General Public
ab84e3ff	17	License along with the GNU C Library. If not, see
5a82c748	18	<https://www.gnu.org/licenses/>. */
ff347533 JM	19
	20	#include <sysdep.h>
	21	#include <sys/asm.h>
	22	#include <sys/fpregdef.h>
	23	#include <sys/regdef.h>
	24
	25	#include "ucontext_i.h"
	26
	27	/* int swapcontext (ucontext_t oucp, const ucontext_t ucp) */
	28
	29	.text
43301bd3	30	.set nomips16
ff347533 JM	31	LOCALSZ = 0
	32	ARGSZ = 0
	33	MASK = 0x00000000
	34	#ifdef __PIC__
	35	LOCALSZ = 1 /* save gp */
	36	#endif
	37	#if _MIPS_SIM != _ABIO32
	38	ARGSZ = 1 /* save a1 */
	39	# ifdef __PIC__
	40	MASK = 0x10000000
	41	# endif
	42	#endif
	43	FRAMESZ = (((ARGSZ + LOCALSZ) * SZREG) + ALSZ) & ALMASK
	44	GPOFF = FRAMESZ - ((ARGSZ + 1) * SZREG)
	45	#if _MIPS_SIM != _ABIO32
	46	A1OFF = FRAMESZ - (1 * SZREG) /* callee-allocated */
	47	#else
	48	A1OFF = FRAMESZ + (1 * SZREG) /* caller-allocated */
	49	#endif
b309f058 GC	50	MCONTEXT_GREGSZ = 8
	51	#if _MIPS_SIM == _ABIO32 && __BYTE_ORDER__ == __ORDER_BIG_ENDIAN__
	52	MCONTEXT_GREGOFF = 4
	53	#else
	54	MCONTEXT_GREGOFF = 0
	55	#endif
ff347533 JM	56
	57	NESTED (__swapcontext, FRAMESZ, ra)
	58	.mask MASK, -(ARGSZ * SZREG)
	59	.fmask 0x00000000, 0
	60
	61	#ifdef __PIC__
	62	SETUP_GP
	63
	64	move a2, sp
	65	# define _SP a2
	66
	67	# if _MIPS_SIM != _ABIO32
	68	move a3, gp
	69	# define _GP a3
	70	# endif
	71
	72	PTR_ADDIU sp, -FRAMESZ
aea7a9b9 JM	73	cfi_adjust_cfa_offset (FRAMESZ)
aea7a9b9 JM	74	SETUP_GP64_STACK (GPOFF, __swapcontext)
ff347533 JM	75	SAVE_GP (GPOFF)
	76
	77	#else /* ! __PIC__ */
	78	# define _SP sp
	79	# define _GP gp
	80
	81	#endif /* ! __PIC__ */
	82
	83	#ifdef PROF
	84	.set noat
	85	move AT, ra
	86	jal _mcount
	87	.set at
	88	#endif
	89
b309f058 GC	90	REG_S s0, (MCONTEXT_GREGOFF + 16 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	91	REG_S s1, (MCONTEXT_GREGOFF + 17 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	92	REG_S s2, (MCONTEXT_GREGOFF + 18 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	93	REG_S s3, (MCONTEXT_GREGOFF + 19 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	94	REG_S s4, (MCONTEXT_GREGOFF + 20 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	95	REG_S s5, (MCONTEXT_GREGOFF + 21 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	96	REG_S s6, (MCONTEXT_GREGOFF + 22 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	97	REG_S s7, (MCONTEXT_GREGOFF + 23 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
ff347533	98	#if ! defined (__PIC__) \|\| _MIPS_SIM != _ABIO32
b309f058	99	REG_S _GP, (MCONTEXT_GREGOFF + 28 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
ff347533	100	#endif
b309f058 GC	101	REG_S _SP, (MCONTEXT_GREGOFF + 29 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	102	REG_S fp, (MCONTEXT_GREGOFF + 30 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	103	REG_S ra, (MCONTEXT_GREGOFF + 31 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(a0)
	104	REG_S ra, (MCONTEXT_GREGOFF + MCONTEXT_PC)(a0)
ff347533 JM	105
	106	#ifdef __mips_hard_float
	107	# if _MIPS_SIM == _ABI64
	108	s.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(a0)
	109	s.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(a0)
	110	s.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(a0)
	111	s.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(a0)
	112	s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
	113	s.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(a0)
	114	s.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(a0)
	115	s.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(a0)
	116
	117	# else /* _MIPS_SIM != _ABI64 */
	118	s.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(a0)
	119	s.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(a0)
	120	s.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(a0)
	121	s.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(a0)
	122	s.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(a0)
	123	s.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(a0)
	124
	125	# endif /* _MIPS_SIM != _ABI64 */
	126
	127	cfc1 v1, fcr31
	128	sw v1, MCONTEXT_FPC_CSR(a0)
	129	#endif /* __mips_hard_float */
	130
	131	REG_S a1, A1OFF(sp)
	132
	133	/* rt_sigprocmask (SIG_SETMASK, &ucp->uc_sigmask, &oucp->uc_sigmask, _NSIG8) */
	134	li a3, _NSIG8
	135	PTR_ADDU a2, a0, UCONTEXT_SIGMASK
	136	PTR_ADDU a1, a1, UCONTEXT_SIGMASK
	137	li a0, SIG_SETMASK
	138
	139	li v0, SYS_ify (rt_sigprocmask)
	140	syscall
	141	bnez a3, 99f
	142
	143	REG_L v0, A1OFF(sp)
	144
	145	#ifdef __mips_hard_float
	146	# if _MIPS_SIM == _ABI64
	147	l.d fs0, (24 * SZREG + MCONTEXT_FPREGS)(v0)
	148	l.d fs1, (25 * SZREG + MCONTEXT_FPREGS)(v0)
	149	l.d fs2, (26 * SZREG + MCONTEXT_FPREGS)(v0)
	150	l.d fs3, (27 * SZREG + MCONTEXT_FPREGS)(v0)
	151	l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
	152	l.d fs5, (29 * SZREG + MCONTEXT_FPREGS)(v0)
	153	l.d fs6, (30 * SZREG + MCONTEXT_FPREGS)(v0)
	154	l.d fs7, (31 * SZREG + MCONTEXT_FPREGS)(v0)
	155
	156	# else /* _MIPS_SIM != _ABI64 */
	157	l.d fs0, (20 * SZREG + MCONTEXT_FPREGS)(v0)
	158	l.d fs1, (22 * SZREG + MCONTEXT_FPREGS)(v0)
	159	l.d fs2, (24 * SZREG + MCONTEXT_FPREGS)(v0)
	160	l.d fs3, (26 * SZREG + MCONTEXT_FPREGS)(v0)
	161	l.d fs4, (28 * SZREG + MCONTEXT_FPREGS)(v0)
	162	l.d fs5, (30 * SZREG + MCONTEXT_FPREGS)(v0)
	163
	164	# endif /* _MIPS_SIM != _ABI64 */
	165
	166	lw v1, MCONTEXT_FPC_CSR(v0)
	167	ctc1 v1, fcr31
	168	#endif /* __mips_hard_float */
169
170	/* Note the contents of argument registers will be random
171	unless makecontext() has been called. */
b309f058 GC	172	REG_L a0, (MCONTEXT_GREGOFF + 4 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	173	REG_L a1, (MCONTEXT_GREGOFF + 5 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	174	REG_L a2, (MCONTEXT_GREGOFF + 6 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	175	REG_L a3, (MCONTEXT_GREGOFF + 7 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
ff347533	176	#if _MIPS_SIM != _ABIO32
b309f058 GC	177	REG_L a4, (MCONTEXT_GREGOFF + 8 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	178	REG_L a5, (MCONTEXT_GREGOFF + 9 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	179	REG_L a6, (MCONTEXT_GREGOFF + 10 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	180	REG_L a7, (MCONTEXT_GREGOFF + 11 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
ff347533 JM	181	#endif
ff347533 JM	182
b309f058 GC	183	REG_L s0, (MCONTEXT_GREGOFF + 16 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	184	REG_L s1, (MCONTEXT_GREGOFF + 17 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	185	REG_L s2, (MCONTEXT_GREGOFF + 18 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	186	REG_L s3, (MCONTEXT_GREGOFF + 19 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	187	REG_L s4, (MCONTEXT_GREGOFF + 20 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	188	REG_L s5, (MCONTEXT_GREGOFF + 21 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	189	REG_L s6, (MCONTEXT_GREGOFF + 22 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	190	REG_L s7, (MCONTEXT_GREGOFF + 23 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
ff347533	191	#if ! defined (__PIC__) \|\| _MIPS_SIM != _ABIO32
b309f058	192	REG_L gp, (MCONTEXT_GREGOFF + 28 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
ff347533	193	#endif
b309f058 GC	194	REG_L sp, (MCONTEXT_GREGOFF + 29 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	195	REG_L fp, (MCONTEXT_GREGOFF + 30 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	196	REG_L ra, (MCONTEXT_GREGOFF + 31 * MCONTEXT_GREGSZ + MCONTEXT_GREGS)(v0)
	197	REG_L t9, (MCONTEXT_GREGOFF + MCONTEXT_PC)(v0)
ff347533 JM	198
	199	move v0, zero
	200	jr t9
	201
	202	99:
	203	#ifdef __PIC__
	204	PTR_LA t9, JUMPTARGET (__syscall_error)
aea7a9b9	205	RESTORE_GP64_STACK
ff347533	206	PTR_ADDIU sp, FRAMESZ
aea7a9b9	207	cfi_adjust_cfa_offset (-FRAMESZ)
ff347533 JM	208	jr t9
	209
	210	#else /* ! __PIC__ */
	211
	212	j JUMPTARGET (__syscall_error)
	213	#endif /* ! __PIC__ */
	214	PSEUDO_END (__swapcontext)
	215
	216	weak_alias (__swapcontext, swapcontext)