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2001-04-04  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/s390/s390-64/Dist: Add ucontext_i.h.
	* sysdeps/unix/sysv/linux/s390/s390-32/Dist: Likewise.

2001-04-04  Martin Schwidefsky  <schwidefsky@de.ibm.com>

	* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S: New file.
	* sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h: New file.
	* sysdeps/unix/sysv/linux/s390/swapcontext.c: New file.

	* sunrpc/rpc_scan.c (symbols): Add entry for HYPER.
	* sunrpc/rpc_scan.h (enum tok_kind): Add TOK_HYPER.
	* sunrpc/rpc_parse.c (get_type): Handle TOK_HYPER.
	(unsigned_dec): Likewise.
	Patch by atai@jezebel.dreamhost.com.
This commit is contained in:
Ulrich Drepper 2001-04-04 17:39:59 +00:00
parent ce64ae6baa
commit 816fc1ed2e
14 changed files with 621 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
ChangeLog
View File

@ -1,3 +1,20 @@
2001-04-04 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/s390/s390-64/Dist: Add ucontext_i.h.
* sysdeps/unix/sysv/linux/s390/s390-32/Dist: Likewise.
2001-04-04 Martin Schwidefsky <schwidefsky@de.ibm.com>
* sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S: New file.
* sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c: New file.
* sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S: New file.
* sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S: New file.
* sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h: New file.
* sysdeps/unix/sysv/linux/s390/swapcontext.c: New file.
2001-04-04 Andreas Jaeger <aj@suse.de>
* sysdeps/powerpc/dl-machine.h (ELF_MACHINE_NO_REL): Move to right
@ -5,6 +22,12 @@
2001-04-04 Ulrich Drepper <drepper@redhat.com>
* sunrpc/rpc_scan.c (symbols): Add entry for HYPER.
* sunrpc/rpc_scan.h (enum tok_kind): Add TOK_HYPER.
* sunrpc/rpc_parse.c (get_type): Handle TOK_HYPER.
(unsigned_dec): Likewise.
Patch by atai@jezebel.dreamhost.com.
* nis/nss_nis/nis-service.c (_nss_nis_getservbyname_r): Pass
pointer to int as last parameter of yp_match.
Patch by kanazawa@flab.fujitsu.co.jp.

9
sunrpc/rpc_parse.c
View File

@ -621,6 +621,10 @@ get_type (const char **prefixp, const char **typep, defkind dkind)
*typep = "long";
(void) peekscan (TOK_INT, &tok);
break;
case TOK_HYPER:
*typep = "int64_t";
(void) peekscan(TOK_INT, &tok);
break;
case TOK_VOID:
if (dkind != DEF_UNION && dkind != DEF_PROGRAM)
{
@ -664,6 +668,11 @@ unsigned_dec (const char **typep)
*typep = "u_long";
(void) peekscan (TOK_INT, &tok);
break;
case TOK_HYPER:
get_token (&tok);
*typep = "uint64_t";
(void) peekscan(TOK_INT, &tok);
break;
case TOK_INT:
get_token (&tok);
*typep = "u_int";

1
sunrpc/rpc_scan.h
View File

@ -65,6 +65,7 @@ enum tok_kind {
TOK_INT,
TOK_SHORT,
TOK_LONG,
TOK_HYPER,
TOK_UNSIGNED,
TOK_FLOAT,
TOK_DOUBLE,

1
sysdeps/unix/sysv/linux/s390/s390-32/Dist
View File

@ -5,3 +5,4 @@ setresgid.c
setfsuid.c
setfsgid.c
sys/procfs.h
ucontext_i.h

72
sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S Normal file
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@ -0,0 +1,72 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __getcontext (const ucontext_t *ucp)
Saves the machine context in UCP such that when it is activated,
it appears as if __getcontext() returned again. The only difference
is that on a first return, %r2 contains 1 and on a subsequent
return, it contains 0.
This implementation is intended to be used for *synchronous* context
switches only. Therefore, it does not have to save anything
other than the PRESERVED state. */
ENTRY(__getcontext)
lr %r5,%r2
/* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
la %r2,SIG_BLOCK
slr %r3,%r3
la %r4,SC_MASK(%r5)
svc SYS_ify(rt_sigprocmask)
/* Store fpu context. */
stfpc SC_FPC(%r5)
std %f0,SC_FPRS(%r5)
std %f1,SC_FPRS+8(%r5)
std %f2,SC_FPRS+16(%r5)
std %f3,SC_FPRS+24(%r5)
std %f4,SC_FPRS+32(%r5)
std %f5,SC_FPRS+40(%r5)
std %f6,SC_FPRS+48(%r5)
std %f7,SC_FPRS+56(%r5)
std %f8,SC_FPRS+64(%r5)
std %f9,SC_FPRS+72(%r5)
std %f10,SC_FPRS+80(%r5)
std %f11,SC_FPRS+88(%r5)
std %f12,SC_FPRS+96(%r5)
std %f13,SC_FPRS+104(%r5)
std %f14,SC_FPRS+112(%r5)
std %f15,SC_FPRS+120(%r5)
/* Store general purpose registers. */
stm %r0,%r15,SC_GPRS(%r5)
/* Return 0. */
slr %r2,%r2
br %r14
END(__getcontext)
weak_alias(__getcontext, getcontext)

101
sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c Normal file
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@ -0,0 +1,101 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <libintl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <ucontext.h>
/* This implementation can handle any ARGC value but only
normal integer type parameters. Parameters of type float,
double, complex and structure with sizes 0, 2, 4 or 8
won't work.
makecontext sets up a stack and the registers for the
context. The stack looks like this:
size offset
%r15 -> +-----------------------+
4 | back chain (zero) | 0
4 | reserved | 4
88 | save area for (*func) | 8
+-----------------------+
n | overflow parameters | 96
+-----------------------+
8 | trampoline | 96+n
+-----------------------+
The registers are set up like this:
%r2-%r6: parameters 1 to 5
%r7 : (*func) pointer
%r8 : uc_link from ucontext structure
%r9 : address of setcontext
%r14 : return address to uc_link trampoline
%r15 : stack pointer.
The trampoline looks like this:
basr %r14,%r7
lr %r2,%r8
br %r9. */
void
__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
{
unsigned long *sp;
va_list ap;
int i;
sp = (long *) (((long) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & -8L);
/* Setup the trampoline. */
*--sp = 0x07f90000;
*--sp = 0x0de71828;
/* Set the return address to trampoline. */
ucp->uc_mcontext.gregs[14] = (long) sp;
/* Set register parameters. */
va_start (ap, argc);
for (i = 0; (i < argc) && (i < 5); i++)
ucp->uc_mcontext.gregs[2+i] = va_arg (ap, long);
/* The remaining arguments go to the overflow area. */
if (argc > 5) {
sp -= argc - 5;
for (i = 5; i < argc; i++)
sp[i] = va_arg(ap, long);
}
va_end (ap);
/* Make room for the save area and set the backchain. */
sp -= 24;
*sp = 0;
/* Pass (*func) to __start_context in %r7. */
ucp->uc_mcontext.gregs[7] = (long) func;
/* Pass ucp->uc_link to __start_context in %r8. */
ucp->uc_mcontext.gregs[8] = (long) ucp->uc_link;
/* Pass address of setcontext in %r9. */
ucp->uc_mcontext.gregs[9] = (long) &setcontext;
/* Set stack pointer. */
ucp->uc_mcontext.gregs[15] = (long) sp;
}
weak_alias (__makecontext, makecontext)

70
sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S Normal file
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@ -0,0 +1,70 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __setcontext (const ucontext_t *ucp)
Restores the machine context in UCP and thereby resumes execution
in that context.
This implementation is intended to be used for *synchronous* context
switches only. Therefore, it does not have to restore anything
other than the PRESERVED state. */
ENTRY(__setcontext)
lr %r5,%r2
/* sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL). */
la %r2,SIG_BLOCK
la %r3,SC_MASK(%r5)
slr %r4,%r4
svc SYS_ify(rt_sigprocmask)
/* Load fpu context. */
lfpc SC_FPC(%r5)
ld %f0,SC_FPRS(%r5)
ld %f1,SC_FPRS+8(%r5)
ld %f2,SC_FPRS+16(%r5)
ld %f3,SC_FPRS+24(%r5)
ld %f4,SC_FPRS+32(%r5)
ld %f5,SC_FPRS+40(%r5)
ld %f6,SC_FPRS+48(%r5)
ld %f7,SC_FPRS+56(%r5)
ld %f8,SC_FPRS+64(%r5)
ld %f9,SC_FPRS+72(%r5)
ld %f10,SC_FPRS+80(%r5)
ld %f11,SC_FPRS+88(%r5)
ld %f12,SC_FPRS+96(%r5)
ld %f13,SC_FPRS+104(%r5)
ld %f14,SC_FPRS+112(%r5)
ld %f15,SC_FPRS+120(%r5)
/* Load general purpose registers. */
lm %r0,%r15,SC_GPRS(%r5)
/* Return 1. */
la %r2,1
br %r14
END(__setcontext)
weak_alias(__setcontext, setcontext)

34
sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h Normal file
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@ -0,0 +1,34 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Constants shared between setcontext() and getcontext(). Don't
install this header file. */
#define SIG_BLOCK 0
#define SIG_UNBLOCK 1
#define SIG_SETMASK 2
#define SC_FLGS 0x000
#define SC_LINK 0x004
#define SC_MASK 0x008
#define SC_STCK 0x088
#define SC_VERS 0x098
#define SC_GPRS 0x09c
#define SC_FPC 0x130
#define SC_FPRS 0x138

1
sysdeps/unix/sysv/linux/s390/s390-64/Dist
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@ -1,3 +1,4 @@
clone.S
kernel_stat.h
sys/procfs.h
ucontext_i.h

72
sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S Normal file
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@ -0,0 +1,72 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __getcontext (const ucontext_t *ucp)
Saves the machine context in UCP such that when it is activated,
it appears as if __getcontext() returned again. The only difference
is that on a first return, %r2 contains 1 and on a subsequent
return, it contains 0.
This implementation is intended to be used for *synchronous* context
switches only. Therefore, it does not have to save anything
other than the PRESERVED state. */
ENTRY(__getcontext)
lgr %r5,%r2
/* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
la %r2,SIG_BLOCK
slr %r3,%r3
la %r4,SC_MASK(%r5)
svc SYS_ify(rt_sigprocmask)
/* Store fpu context. */
stfpc SC_FPC(%r5)
std %f0,SC_FPRS(%r5)
std %f1,SC_FPRS+8(%r5)
std %f2,SC_FPRS+16(%r5)
std %f3,SC_FPRS+24(%r5)
std %f4,SC_FPRS+32(%r5)
std %f5,SC_FPRS+40(%r5)
std %f6,SC_FPRS+48(%r5)
std %f7,SC_FPRS+56(%r5)
std %f8,SC_FPRS+64(%r5)
std %f9,SC_FPRS+72(%r5)
std %f10,SC_FPRS+80(%r5)
std %f11,SC_FPRS+88(%r5)
std %f12,SC_FPRS+96(%r5)
std %f13,SC_FPRS+104(%r5)
std %f14,SC_FPRS+112(%r5)
std %f15,SC_FPRS+120(%r5)
/* Store general purpose registers. */
stmg %r0,%r15,SC_GPRS(%r5)
/* Return 0. */
slgr %r2,%r2
br %r14
END(__getcontext)
weak_alias(__getcontext, getcontext)

100
sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c Normal file
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@ -0,0 +1,100 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <libintl.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <ucontext.h>
/* This implementation can handle any ARGC value but only
normal integer type parameters. Parameters of type float,
double, complex and structure with sizes 0, 2, 4 or 8
won't work.
makecontext sets up a stack and the registers for the
user context. The stack looks like this:
size offset
%r15 -> +-----------------------+
8 | back chain (zero) | 0
8 | reserved | 8
144 | save area for (*func) | 16
+-----------------------+
n | overflow parameters | 160
+-----------------------+
8 | trampoline | 160+n
+-----------------------+
The registers are set up like this:
%r2-%r6: parameters 1 to 5
%r7 : (*func) pointer
%r8 : uc_link from ucontext structure
%r9 : address of setcontext
%r14 : return address to uc_link trampoline
%r15 : stack pointer.
The trampoline looks like this:
basr %r14,%r7
lgr %r2,%r8
br %r9. */
void
__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...)
{
unsigned long *sp;
va_list ap;
int i;
sp = (long *) (((long) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & -8L);
/* Setup the trampoline. */
*--sp = 0x0de7b904002807f9;
/* Set the return address to trampoline. */
ucp->uc_mcontext.gregs[14] = (long) sp;
/* Set register parameters. */
va_start (ap, argc);
for (i = 0; (i < argc) && (i < 5); i++)
ucp->uc_mcontext.gregs[2+i] = va_arg (ap, long);
/* The remaining arguments go to the overflow area. */
if (argc > 5) {
sp -= argc - 5;
for (i = 5; i < argc; i++)
sp[i] = va_arg(ap, long);
}
va_end (ap);
/* Make room for the save area and set the backchain. */
sp -= 20;
*sp = 0;
/* Pass (*func) to __start_context in %r7. */
ucp->uc_mcontext.gregs[7] = (long) func;
/* Pass ucp->uc_link to __start_context in %r8. */
ucp->uc_mcontext.gregs[8] = (long) ucp->uc_link;
/* Pass address of setcontext in %r9. */
ucp->uc_mcontext.gregs[9] = (long) &setcontext;
/* Set stack pointer. */
ucp->uc_mcontext.gregs[15] = (long) sp;
}
weak_alias (__makecontext, makecontext)

70
sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S Normal file
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@ -0,0 +1,70 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include <sysdep.h>
#include <features.h>
#include "ucontext_i.h"
/* __setcontext (const ucontext_t *ucp)
Restores the machine context in UCP and thereby resumes execution
in that context.
This implementation is intended to be used for *synchronous* context
switches only. Therefore, it does not have to restore anything
other than the PRESERVED state. */
ENTRY(__setcontext)
lgr %r5,%r2
/* sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL). */
la %r2,SIG_BLOCK
la %r3,SC_MASK(%r5)
slgr %r4,%r4
svc SYS_ify(rt_sigprocmask)
/* Load fpu context. */
lfpc SC_FPC(%r5)
ld %f0,SC_FPRS(%r5)
ld %f1,SC_FPRS+8(%r5)
ld %f2,SC_FPRS+16(%r5)
ld %f3,SC_FPRS+24(%r5)
ld %f4,SC_FPRS+32(%r5)
ld %f5,SC_FPRS+40(%r5)
ld %f6,SC_FPRS+48(%r5)
ld %f7,SC_FPRS+56(%r5)
ld %f8,SC_FPRS+64(%r5)
ld %f9,SC_FPRS+72(%r5)
ld %f10,SC_FPRS+80(%r5)
ld %f11,SC_FPRS+88(%r5)
ld %f12,SC_FPRS+96(%r5)
ld %f13,SC_FPRS+104(%r5)
ld %f14,SC_FPRS+112(%r5)
ld %f15,SC_FPRS+120(%r5)
/* Load general purpose registers. */
lmg %r0,%r15,SC_GPRS(%r5)
/* Return 1. */
la %r2,1
br %r14
END(__setcontext)
weak_alias(__setcontext, setcontext)

34
sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h Normal file
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@ -0,0 +1,34 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>.
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If
not, write to the Free Software Foundation, Inc.,
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Constants shared between setcontext() and getcontext(). Don't
install this header file. */
#define SIG_BLOCK 0
#define SIG_UNBLOCK 1
#define SIG_SETMASK 2
#define SC_FLGS 0x000
#define SC_LINK 0x008
#define SC_MASK 0x010
#define SC_STCK 0x090
#define SC_VERS 0x0a8
#define SC_GPRS 0x0b0
#define SC_FPC 0x188
#define SC_FPRS 0x190

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sysdeps/unix/sysv/linux/s390/swapcontext.c Normal file
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@ -0,0 +1,33 @@
/* Copyright (C) 2001 Free Software Foundation, Inc.
This file is part of the GNU C Library.
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com).
The GNU C Library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public License as
published by the Free Software Foundation; either version 2 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
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with the GNU C Library; see the file COPYING.LIB. If not,
write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
Boston, MA 02111-1307, USA. */
#include <ucontext.h>
extern int __getcontext (ucontext_t *__ucp) __THROW;
extern int __setcontext (__const ucontext_t *__ucp) __THROW;
int
__swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
{
if (__getcontext (oucp) == 0)
__setcontext (ucp);
return 0;
}
weak_alias (__swapcontext, swapcontext)