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-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/Dist1
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S72
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c101
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S70
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h34
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/Dist1
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S72
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c100
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S70
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h34
-rw-r--r--sysdeps/unix/sysv/linux/s390/swapcontext.c33
11 files changed, 588 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/Dist b/sysdeps/unix/sysv/linux/s390/s390-32/Dist
index 8023618720..beebff1d92 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-32/Dist
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/Dist
@@ -5,3 +5,4 @@ setresgid.c
setfsuid.c
setfsgid.c
sys/procfs.h
+ucontext_i.h
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S
new file mode 100644
index 0000000000..e64cc8588c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c b/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
new file mode 100644
index 0000000000..41ae5ad602
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
new file mode 100644
index 0000000000..40adc8574a
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h b/sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h
new file mode 100644
index 0000000000..926a805dd0
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h
@@ -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
+
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/Dist b/sysdeps/unix/sysv/linux/s390/s390-64/Dist
index 35d4f03c97..38ff6d7daa 100644
--- a/sysdeps/unix/sysv/linux/s390/s390-64/Dist
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/Dist
@@ -1,3 +1,4 @@
clone.S
kernel_stat.h
sys/procfs.h
+ucontext_i.h
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
new file mode 100644
index 0000000000..2fc21e2b60
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
new file mode 100644
index 0000000000..6e0478cf0e
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S
new file mode 100644
index 0000000000..b3a9fea405
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S
@@ -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)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h b/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h
new file mode 100644
index 0000000000..a7081141bd
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h
@@ -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
+
diff --git a/sysdeps/unix/sysv/linux/s390/swapcontext.c b/sysdeps/unix/sysv/linux/s390/swapcontext.c
new file mode 100644
index 0000000000..9f1be058db
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/swapcontext.c
@@ -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)
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-31 10:36:16 +0000