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-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S108
-rw-r--r--sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S108
-rw-r--r--sysdeps/unix/sysv/linux/s390/swapcontext.c39
3 files changed, 216 insertions, 39 deletions
diff --git a/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S
new file mode 100644
index 0000000000..d9abb62c0b
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-32/swapcontext.S
@@ -0,0 +1,108 @@
+/* Copyright (C) 2002 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 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>
+#include <features.h>
+
+#include "ucontext_i.h"
+
+/* __swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
+
+ Saves the machine context in oucp such that when it is activated,
+ it appears as if __swapcontextt() returned again, 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 save anything
+ other than the PRESERVED state. */
+
+ENTRY(__swapcontext)
+ lr %r1,%r2
+ lr %r5,%r3
+
+ /* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
+ la %r2,SIG_BLOCK
+ slr %r3,%r3
+ la %r4,SC_MASK(%r1)
+ svc SYS_ify(rt_sigprocmask)
+
+ /* Store fpu context. */
+ stfpc SC_FPC(%r1)
+ std %f0,SC_FPRS(%r1)
+ std %f1,SC_FPRS+8(%r1)
+ std %f2,SC_FPRS+16(%r1)
+ std %f3,SC_FPRS+24(%r1)
+ std %f4,SC_FPRS+32(%r1)
+ std %f5,SC_FPRS+40(%r1)
+ std %f6,SC_FPRS+48(%r1)
+ std %f7,SC_FPRS+56(%r1)
+ std %f8,SC_FPRS+64(%r1)
+ std %f9,SC_FPRS+72(%r1)
+ std %f10,SC_FPRS+80(%r1)
+ std %f11,SC_FPRS+88(%r1)
+ std %f12,SC_FPRS+96(%r1)
+ std %f13,SC_FPRS+104(%r1)
+ std %f14,SC_FPRS+112(%r1)
+ std %f15,SC_FPRS+120(%r1)
+
+ /* Set __swapcontext return value to 0. */
+ slr %r2,%r2
+
+ /* Store access registers. */
+ stam %a0,%a15,SC_ACRS(%r1)
+
+ /* Store general purpose registers. */
+ stm %r0,%r15,SC_GPRS(%r1)
+
+ /* 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)
+
+ /* Don't touch %a0, used for thread purposes. */
+ lam %a1,%a15,SC_ACRS+4(%r5)
+
+ /* Load general purpose registers. */
+ lm %r0,%r15,SC_GPRS(%r5)
+
+ /* Return. */
+ br %r14
+END(__swapcontext)
+weak_alias(__swapcontext, swapcontext)
diff --git a/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
new file mode 100644
index 0000000000..55a9aa135c
--- /dev/null
+++ b/sysdeps/unix/sysv/linux/s390/s390-64/swapcontext.S
@@ -0,0 +1,108 @@
+/* Copyright (C) 2002 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 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>
+#include <features.h>
+
+#include "ucontext_i.h"
+
+/* __swapcontext (ucontext_t *oucp, const ucontext_t *ucp)
+
+ Saves the machine context in oucp such that when it is activated,
+ it appears as if __swapcontextt() returned again, 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 save anything
+ other than the PRESERVED state. */
+
+ENTRY(__swapcontext)
+ lr %r1,%r2
+ lr %r5,%r3
+
+ /* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */
+ la %r2,SIG_BLOCK
+ slr %r3,%r3
+ la %r4,SC_MASK(%r1)
+ svc SYS_ify(rt_sigprocmask)
+
+ /* Store fpu context. */
+ stfpc SC_FPC(%r1)
+ std %f0,SC_FPRS(%r1)
+ std %f1,SC_FPRS+8(%r1)
+ std %f2,SC_FPRS+16(%r1)
+ std %f3,SC_FPRS+24(%r1)
+ std %f4,SC_FPRS+32(%r1)
+ std %f5,SC_FPRS+40(%r1)
+ std %f6,SC_FPRS+48(%r1)
+ std %f7,SC_FPRS+56(%r1)
+ std %f8,SC_FPRS+64(%r1)
+ std %f9,SC_FPRS+72(%r1)
+ std %f10,SC_FPRS+80(%r1)
+ std %f11,SC_FPRS+88(%r1)
+ std %f12,SC_FPRS+96(%r1)
+ std %f13,SC_FPRS+104(%r1)
+ std %f14,SC_FPRS+112(%r1)
+ std %f15,SC_FPRS+120(%r1)
+
+ /* Set __swapcontext return value to 0. */
+ slr %r2,%r2
+
+ /* Store access registers. */
+ stam %a0,%a15,SC_ACRS(%r1)
+
+ /* Store general purpose registers. */
+ stmg %r0,%r15,SC_GPRS(%r1)
+
+ /* 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)
+
+ /* Don't touch %a0 and %a1, used for thread purposes. */
+ lam %a2,%a15,SC_ACRS+8(%r5)
+
+ /* Load general purpose registers. */
+ lmg %r0,%r15,SC_GPRS(%r5)
+
+ /* Return. */
+ br %r14
+END(__swapcontext)
+weak_alias(__swapcontext, swapcontext)
diff --git a/sysdeps/unix/sysv/linux/s390/swapcontext.c b/sysdeps/unix/sysv/linux/s390/swapcontext.c
deleted file mode 100644
index 0c8d4c0f98..0000000000
--- a/sysdeps/unix/sysv/linux/s390/swapcontext.c
+++ /dev/null
@@ -1,39 +0,0 @@
-/* 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 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 <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)
-{
- /* Save the current machine context to oucp. */
- __getcontext (oucp);
- /* Modify oucp to skip the __setcontext call on reactivation. */
- oucp->uc_mcontext.gregs[14] = &&fake_return;
- /* Restore the machine context in ucp. */
- __setcontext (ucp);
-
-fake_return:
- return 0;
-}
-
-weak_alias (__swapcontext, swapcontext)
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-04 09:21:41 +0000