1/* $NetBSD: setjmp.S,v 1.17 2005/09/17 11:49:39 tsutsui Exp $ */
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
--- 19 unchanged lines hidden (view full) ---
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/setjmp.S 209231 2010-06-16 12:55:14Z jchandra $");
37#include <machine/regnum.h>
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93")
41 ASMSTR("$NetBSD: setjmp.S,v 1.17 2005/09/17 11:49:39 tsutsui Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44#include "SYS.h"
45
46#ifdef __ABICALLS__
47 .abicalls
48#endif
49
50/*
51 * C library -- setjmp, longjmp
52 *
53 * longjmp(a,v)
--- 4 unchanged lines hidden (view full) ---
58 * and a struct sigcontext, see <signal.h>
59 */
60
61#define SETJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
62
63
64NESTED(setjmp, SETJMP_FRAME_SIZE, ra)
65 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
66 SETUP_GP
67 PTR_SUBU sp, sp, SETJMP_FRAME_SIZE # allocate stack frame
68 SAVE_GP(CALLFRAME_GP)
69 SETUP_GP64(CALLFRAME_GP, setjmp)
70
71 REG_S ra, CALLFRAME_RA(sp) # save RA
72 REG_S a0, CALLFRAME_SIZ(sp) # store env
73
74 /* Get the signal mask. */
75 PTR_ADDU a2, a0, _JB_SIGMASK * SZREG # &oenv
76 li a0, 1 # SIG_SETBLOCK
77 move a1, zero # &env == 0
78 PTR_LA t9, _C_LABEL(sigprocmask) # get current signal mask
79 jalr t9
80
81 RESTORE_GP64
82 REG_L a0, CALLFRAME_SIZ(sp) # restore env pointer
83 REG_L ra, CALLFRAME_RA(sp) # restore RA
84 PTR_ADDU sp, sp, SETJMP_FRAME_SIZE # pop stack frame
85
86 REG_LI v0, _JB_MAGIC_SETJMP
87 REG_S v0, (_JB_MAGIC * SZREG)(a0)
88 REG_S ra, (_JB_REG_RA * SZREG)(a0)
89 REG_S s0, (_JB_REG_S0 * SZREG)(a0)
90 REG_S s1, (_JB_REG_S1 * SZREG)(a0)
91 REG_S s2, (_JB_REG_S2 * SZREG)(a0)
92 REG_S s3, (_JB_REG_S3 * SZREG)(a0)
93 REG_S s4, (_JB_REG_S4 * SZREG)(a0)
94 REG_S s5, (_JB_REG_S5 * SZREG)(a0)
95 REG_S s6, (_JB_REG_S6 * SZREG)(a0)
96 REG_S s7, (_JB_REG_S7 * SZREG)(a0)
97 REG_S sp, (_JB_REG_SP * SZREG)(a0)
98 REG_S s8, (_JB_REG_S8 * SZREG)(a0)
99#if defined(__mips_n32) || defined(__mips_n64)
100 REG_S gp, (_JB_REG_GP * SZREG)(a0)
101#endif
102
103 move v0, zero
104 jr ra
105END(setjmp)
106
107#define LONGJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
108
109NESTED(longjmp, LONGJMP_FRAME_SIZE, ra)
110 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
111 PIC_PROLOGUE(longjmp)
112 PTR_SUBU sp, sp, LONGJMP_FRAME_SIZE # allocate stack frame
113 SAVE_GP(CALLFRAME_GP)
114
115 REG_S ra, CALLFRAME_RA(sp) # save RA
116 REG_L v0, (_JB_MAGIC * SZREG)(a0)
117 REG_LI t0, _JB_MAGIC_SETJMP
118 bne v0, t0, botch # jump if error
119 nop
120
121 REG_S a0, CALLFRAME_SIZ(sp) # save env
122 REG_S a1, (CALLFRAME_SIZ + SZREG)(sp) # save return value
123
124 # set sigmask
125 PTR_ADDU a1, a0, _JB_SIGMASK * SZREG # &set
126 move a2, zero # &oset == NULL
127 li a0, 3 # SIG_SETMASK
128 PTR_LA t9,_C_LABEL(sigprocmask) # set current signal mask
129 jal t9
130 nop
131
132 REG_L a0, CALLFRAME_SIZ(sp) # restore env
133 REG_L a1, (CALLFRAME_SIZ + SZREG)(sp) # restore return value
134
135 REG_L ra, (_JB_REG_RA * SZREG)(a0)
136 REG_L s0, (_JB_REG_S0 * SZREG)(a0)
137 REG_L s1, (_JB_REG_S1 * SZREG)(a0)
138 REG_L s2, (_JB_REG_S2 * SZREG)(a0)
139 REG_L s3, (_JB_REG_S3 * SZREG)(a0)
140 REG_L s4, (_JB_REG_S4 * SZREG)(a0)
141 REG_L s5, (_JB_REG_S5 * SZREG)(a0)
142 REG_L s6, (_JB_REG_S6 * SZREG)(a0)
143 REG_L s7, (_JB_REG_S7 * SZREG)(a0)
144 REG_L sp, (_JB_REG_SP * SZREG)(a0)
145 REG_L s8, (_JB_REG_S8 * SZREG)(a0)
146#if defined(__mips_n32) || defined(__mips_n64)
147 REG_L gp, (_JB_REG_GP * SZREG)(a0)
148#endif
149
150 move v0, a1
151 j ra
152 nop
153
154botch:
155 /*
156 * We know we aren't returning so we don't care about restoring
157 * our caller's GP.
158 */
159 PTR_LA t9, _C_LABEL(longjmperror)
160 jalr t9
161 nop
162
163 PIC_TAILCALL(abort)
164END(longjmp)
2
3/*-
4 * Copyright (c) 1991, 1993
5 * The Regents of the University of California. All rights reserved.
6 *
7 * This code is derived from software contributed to Berkeley by
8 * Ralph Campbell.
--- 19 unchanged lines hidden (view full) ---
28 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
29 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
30 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
31 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
32 * SUCH DAMAGE.
33 */
34
35#include <machine/asm.h>
36__FBSDID("$FreeBSD: head/lib/libc/mips/gen/setjmp.S 209231 2010-06-16 12:55:14Z jchandra $");
37#include <machine/regnum.h>
38
39#if defined(LIBC_SCCS) && !defined(lint)
40 ASMSTR("from: @(#)setjmp.s 8.1 (Berkeley) 6/4/93")
41 ASMSTR("$NetBSD: setjmp.S,v 1.17 2005/09/17 11:49:39 tsutsui Exp $")
42#endif /* LIBC_SCCS and not lint */
43
44#include "SYS.h"
45
46#ifdef __ABICALLS__
47 .abicalls
48#endif
49
50/*
51 * C library -- setjmp, longjmp
52 *
53 * longjmp(a,v)
--- 4 unchanged lines hidden (view full) ---
58 * and a struct sigcontext, see <signal.h>
59 */
60
61#define SETJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
62
63
64NESTED(setjmp, SETJMP_FRAME_SIZE, ra)
65 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
66 SETUP_GP
67 PTR_SUBU sp, sp, SETJMP_FRAME_SIZE # allocate stack frame
68 SAVE_GP(CALLFRAME_GP)
69 SETUP_GP64(CALLFRAME_GP, setjmp)
70
71 REG_S ra, CALLFRAME_RA(sp) # save RA
72 REG_S a0, CALLFRAME_SIZ(sp) # store env
73
74 /* Get the signal mask. */
75 PTR_ADDU a2, a0, _JB_SIGMASK * SZREG # &oenv
76 li a0, 1 # SIG_SETBLOCK
77 move a1, zero # &env == 0
78 PTR_LA t9, _C_LABEL(sigprocmask) # get current signal mask
79 jalr t9
80
81 RESTORE_GP64
82 REG_L a0, CALLFRAME_SIZ(sp) # restore env pointer
83 REG_L ra, CALLFRAME_RA(sp) # restore RA
84 PTR_ADDU sp, sp, SETJMP_FRAME_SIZE # pop stack frame
85
86 REG_LI v0, _JB_MAGIC_SETJMP
87 REG_S v0, (_JB_MAGIC * SZREG)(a0)
88 REG_S ra, (_JB_REG_RA * SZREG)(a0)
89 REG_S s0, (_JB_REG_S0 * SZREG)(a0)
90 REG_S s1, (_JB_REG_S1 * SZREG)(a0)
91 REG_S s2, (_JB_REG_S2 * SZREG)(a0)
92 REG_S s3, (_JB_REG_S3 * SZREG)(a0)
93 REG_S s4, (_JB_REG_S4 * SZREG)(a0)
94 REG_S s5, (_JB_REG_S5 * SZREG)(a0)
95 REG_S s6, (_JB_REG_S6 * SZREG)(a0)
96 REG_S s7, (_JB_REG_S7 * SZREG)(a0)
97 REG_S sp, (_JB_REG_SP * SZREG)(a0)
98 REG_S s8, (_JB_REG_S8 * SZREG)(a0)
99#if defined(__mips_n32) || defined(__mips_n64)
100 REG_S gp, (_JB_REG_GP * SZREG)(a0)
101#endif
102
103 move v0, zero
104 jr ra
105END(setjmp)
106
107#define LONGJMP_FRAME_SIZE (CALLFRAME_SIZ + (SZREG * 2))
108
109NESTED(longjmp, LONGJMP_FRAME_SIZE, ra)
110 .mask 0x80000000, (CALLFRAME_RA - CALLFRAME_SIZ)
111 PIC_PROLOGUE(longjmp)
112 PTR_SUBU sp, sp, LONGJMP_FRAME_SIZE # allocate stack frame
113 SAVE_GP(CALLFRAME_GP)
114
115 REG_S ra, CALLFRAME_RA(sp) # save RA
116 REG_L v0, (_JB_MAGIC * SZREG)(a0)
117 REG_LI t0, _JB_MAGIC_SETJMP
118 bne v0, t0, botch # jump if error
119 nop
120
121 REG_S a0, CALLFRAME_SIZ(sp) # save env
122 REG_S a1, (CALLFRAME_SIZ + SZREG)(sp) # save return value
123
124 # set sigmask
125 PTR_ADDU a1, a0, _JB_SIGMASK * SZREG # &set
126 move a2, zero # &oset == NULL
127 li a0, 3 # SIG_SETMASK
128 PTR_LA t9,_C_LABEL(sigprocmask) # set current signal mask
129 jal t9
130 nop
131
132 REG_L a0, CALLFRAME_SIZ(sp) # restore env
133 REG_L a1, (CALLFRAME_SIZ + SZREG)(sp) # restore return value
134
135 REG_L ra, (_JB_REG_RA * SZREG)(a0)
136 REG_L s0, (_JB_REG_S0 * SZREG)(a0)
137 REG_L s1, (_JB_REG_S1 * SZREG)(a0)
138 REG_L s2, (_JB_REG_S2 * SZREG)(a0)
139 REG_L s3, (_JB_REG_S3 * SZREG)(a0)
140 REG_L s4, (_JB_REG_S4 * SZREG)(a0)
141 REG_L s5, (_JB_REG_S5 * SZREG)(a0)
142 REG_L s6, (_JB_REG_S6 * SZREG)(a0)
143 REG_L s7, (_JB_REG_S7 * SZREG)(a0)
144 REG_L sp, (_JB_REG_SP * SZREG)(a0)
145 REG_L s8, (_JB_REG_S8 * SZREG)(a0)
146#if defined(__mips_n32) || defined(__mips_n64)
147 REG_L gp, (_JB_REG_GP * SZREG)(a0)
148#endif
149
150 move v0, a1
151 j ra
152 nop
153
154botch:
155 /*
156 * We know we aren't returning so we don't care about restoring
157 * our caller's GP.
158 */
159 PTR_LA t9, _C_LABEL(longjmperror)
160 jalr t9
161 nop
162
163 PIC_TAILCALL(abort)
164END(longjmp)