summaryrefslogtreecommitdiff
path: root/sysdeps/unix/sysv/linux/alpha/wait4.S
blob: 634993deb82799f61a71d6affd6d32db3fec2471 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
/* Copyright (C) 1998, 2003, 2006 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#include <sysdep.h>
#define _ERRNO_H        1
#include <bits/errno.h>
#include <kernel-features.h>

.text

#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
#define WAIT4	__wait4_tv64
#else
#define WAIT4	__wait4
#endif

#if defined __ASSUME_TIMEVAL64
PSEUDO(WAIT4, wait4, 4)
	ret
PSEUDO_END(WAIT4)
#else
/* The problem here is that initially we made struct timeval compatible with
   OSF/1, using int32.  But we defined time_t with uint64, and later found
   that POSIX requires tv_sec to be time_t.

   So now we have to do compatibility stuff.  */

/* The variable is shared between all wrappers around signal handling
   functions which have RT equivalents.  */
.comm __libc_missing_axp_tv64, 4

LEAF(WAIT4, 32)
	ldgp	gp, 0(pv)
	subq	sp, 32, sp
#ifdef PROF
	.set noat
	lda	AT, _mcount
	jsr	AT, (AT), _mcount
	.set at
#endif
	.prologue 1

	ldl	t0, __libc_missing_axp_tv64

	/* Save arguments in case we do need to fall back.  */
	stq	a0, 0(sp)
	stq	a1, 8(sp)
	stq	a2, 16(sp)
	stq	a3, 24(sp)

	bne	t0, $do32

	ldi	v0, SYS_ify(wait4)
	callsys
	bne	a3, $err64

	/* Everything ok.  */
	addq	sp, 32, sp
	ret

	/* If we didn't get ENOSYS, it is a real error.  */
	.align 3
$err64:	cmpeq	v0, ENOSYS, t0
	beq	t0, $error
	stl	t0, __libc_missing_axp_tv64

	/* Recover the saved arguments.  */
	ldq	a3, 24(sp)
	ldq	a2, 16(sp)
	ldq	a1, 8(sp)
	ldq	a0, 0(sp)

	.align 3
$do32:	ldi	v0, SYS_ify(osf_wait4)
	callsys
	bne	a3, $error

	/* Copy back to proper format.  */
	ldq	a3, 24(sp)
	beq	a3, 2f
	ldl	t0, 0(a3)		# ru_utime.tv_sec
	ldl	t1, 4(a3)		# ru_utime.tv_usec
	ldl	t2, 8(a3)		# ru_stime.tv_sec
	ldl	t3, 12(a3)		# ru_stime.tv_usec
	ldt	$f15, 16(a3)		# ru_maxrss
	ldt	$f16, 24(a3)		# ru_ixrss
	ldt	$f17, 32(a3)		# ru_idrss
	ldt	$f18, 40(a3)		# ru_isrss
	ldt	$f19, 48(a3)		# ru_minflt
	ldt	$f20, 56(a3)		# ru_majflt
	ldt	$f21, 64(a3)		# ru_nswap
	ldt	$f22, 72(a3)		# ru_inblock
	ldt	$f23, 80(a3)		# ru_oublock
	ldt	$f24, 88(a3)		# ru_msgsend
	ldt	$f25, 96(a3)		# ru_msgrcv
	ldt	$f26, 104(a3)		# ru_nsignals
	ldt	$f27, 112(a3)		# ru_nvcsw
	.set noat
	ldt	$f28, 120(a3)		# ru_nivcsw
	stq	t0, 0(a3)
	stq	t1, 8(a3)
	stq	t2, 16(a3)
	stq	t3, 24(a3)
	stt	$f15, 32(a3)
	stt	$f16, 40(a3)
	stt	$f17, 48(a3)
	stt	$f18, 56(a3)
	stt	$f19, 64(a3)
	stt	$f20, 72(a3)
	stt	$f21, 80(a3)
	stt	$f22, 88(a3)
	stt	$f23, 96(a3)
	stt	$f24, 104(a3)
	stt	$f25, 112(a3)
	stt	$f26, 120(a3)
	stt	$f27, 128(a3)
	stt	$f28, 136(a3)
	.set at

2:	addq	sp, 32, sp
	ret

	.align 3
$error:
	addq	sp, 32, sp
	SYSCALL_ERROR_HANDLER

END(WAIT4)
#endif /* __ASSUME_TIMEVAL64 */

#if defined HAVE_ELF && defined PIC && defined DO_VERSIONING
default_symbol_version (__wait4_tv64, __wait4, GLIBC_2.1)

/* It seems to me to be a misfeature of the assembler that we can only
   have one version-alias per symbol.  So create an alias ourselves.
   The 'p' is for 'public'.  *Shrug*  */
strong_alias (__wait4_tv64, __wait4_tv64p)
default_symbol_version (__wait4_tv64p, wait4, GLIBC_2.1)
#else
weak_alias (__wait4, wait4)
#endif