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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.cvs/glibc-2-2-branch
Ulrich Drepper
25 years ago
14 changed files with 621 additions and 0 deletions
@ -0,0 +1,72 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
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|
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The GNU C Library is free software; you can redistribute it and/or |
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modify it under the terms of the GNU Library General Public License as |
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published by the Free Software Foundation; either version 2 of the |
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License, or (at your option) any later version. |
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|
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The GNU C Library is distributed in the hope that it will be useful, |
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but WITHOUT ANY WARRANTY; without even the implied warranty of |
|||
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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Library General Public License for more details. |
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|
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You should have received a copy of the GNU Library General Public |
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License along with the GNU C Library; see the file COPYING.LIB. If |
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not, write to the Free Software Foundation, Inc., |
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59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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|
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#include <sysdep.h> |
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#include <features.h> |
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|
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#include "ucontext_i.h" |
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|
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/* __getcontext (const ucontext_t *ucp) |
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|
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Saves the machine context in UCP such that when it is activated, |
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it appears as if __getcontext() returned again. The only difference |
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is that on a first return, %r2 contains 1 and on a subsequent |
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return, it contains 0. |
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|
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This implementation is intended to be used for *synchronous* context |
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switches only. Therefore, it does not have to save anything |
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other than the PRESERVED state. */ |
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|
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ENTRY(__getcontext) |
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lr %r5,%r2 |
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|
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/* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */ |
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la %r2,SIG_BLOCK |
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slr %r3,%r3 |
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la %r4,SC_MASK(%r5) |
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svc SYS_ify(rt_sigprocmask) |
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|
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/* Store fpu context. */ |
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stfpc SC_FPC(%r5) |
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std %f0,SC_FPRS(%r5) |
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std %f1,SC_FPRS+8(%r5) |
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std %f2,SC_FPRS+16(%r5) |
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std %f3,SC_FPRS+24(%r5) |
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std %f4,SC_FPRS+32(%r5) |
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std %f5,SC_FPRS+40(%r5) |
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std %f6,SC_FPRS+48(%r5) |
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std %f7,SC_FPRS+56(%r5) |
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std %f8,SC_FPRS+64(%r5) |
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std %f9,SC_FPRS+72(%r5) |
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std %f10,SC_FPRS+80(%r5) |
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std %f11,SC_FPRS+88(%r5) |
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std %f12,SC_FPRS+96(%r5) |
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std %f13,SC_FPRS+104(%r5) |
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std %f14,SC_FPRS+112(%r5) |
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std %f15,SC_FPRS+120(%r5) |
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|
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/* Store general purpose registers. */ |
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stm %r0,%r15,SC_GPRS(%r5) |
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|
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/* Return 0. */ |
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slr %r2,%r2 |
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br %r14 |
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END(__getcontext) |
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|
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weak_alias(__getcontext, getcontext) |
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@ -0,0 +1,101 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library. |
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
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|
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The GNU C Library is free software; you can redistribute it and/or |
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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. |
|||
|
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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, |
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write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, |
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Boston, MA 02111-1307, USA. */ |
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|
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#include <libintl.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <ucontext.h> |
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|
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/* This implementation can handle any ARGC value but only
|
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normal integer type parameters. Parameters of type float, |
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double, complex and structure with sizes 0, 2, 4 or 8 |
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won't work. |
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makecontext sets up a stack and the registers for the |
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context. The stack looks like this: |
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size offset |
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%r15 -> +-----------------------+ |
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4 | back chain (zero) | 0 |
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4 | reserved | 4 |
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88 | save area for (*func) | 8 |
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+-----------------------+ |
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n | overflow parameters | 96 |
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+-----------------------+ |
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8 | trampoline | 96+n |
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+-----------------------+ |
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The registers are set up like this: |
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%r2-%r6: parameters 1 to 5 |
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%r7 : (*func) pointer |
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%r8 : uc_link from ucontext structure |
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%r9 : address of setcontext |
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%r14 : return address to uc_link trampoline |
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%r15 : stack pointer. |
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|
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The trampoline looks like this: |
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basr %r14,%r7 |
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lr %r2,%r8 |
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br %r9. */ |
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|
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void |
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__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) |
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{ |
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unsigned long *sp; |
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va_list ap; |
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int i; |
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|
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sp = (long *) (((long) ucp->uc_stack.ss_sp + ucp->uc_stack.ss_size) & -8L); |
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|
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/* Setup the trampoline. */ |
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*--sp = 0x07f90000; |
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*--sp = 0x0de71828; |
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|
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/* Set the return address to trampoline. */ |
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ucp->uc_mcontext.gregs[14] = (long) sp; |
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|
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/* Set register parameters. */ |
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va_start (ap, argc); |
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for (i = 0; (i < argc) && (i < 5); i++) |
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ucp->uc_mcontext.gregs[2+i] = va_arg (ap, long); |
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|
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/* The remaining arguments go to the overflow area. */ |
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if (argc > 5) { |
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sp -= argc - 5; |
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for (i = 5; i < argc; i++) |
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sp[i] = va_arg(ap, long); |
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} |
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va_end (ap); |
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|
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/* Make room for the save area and set the backchain. */ |
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sp -= 24; |
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*sp = 0; |
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|
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/* Pass (*func) to __start_context in %r7. */ |
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ucp->uc_mcontext.gregs[7] = (long) func; |
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|
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/* Pass ucp->uc_link to __start_context in %r8. */ |
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ucp->uc_mcontext.gregs[8] = (long) ucp->uc_link; |
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|
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/* Pass address of setcontext in %r9. */ |
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ucp->uc_mcontext.gregs[9] = (long) &setcontext; |
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|
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/* Set stack pointer. */ |
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ucp->uc_mcontext.gregs[15] = (long) sp; |
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} |
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|
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weak_alias (__makecontext, makecontext) |
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@ -0,0 +1,70 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
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|
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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. |
|||
|
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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. */ |
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|
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#include <sysdep.h> |
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#include <features.h> |
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|
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#include "ucontext_i.h" |
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|
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/* __setcontext (const ucontext_t *ucp) |
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|
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Restores the machine context in UCP and thereby resumes execution |
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in that context. |
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|
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This implementation is intended to be used for *synchronous* context |
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switches only. Therefore, it does not have to restore anything |
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other than the PRESERVED state. */ |
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|
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ENTRY(__setcontext) |
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lr %r5,%r2 |
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|
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/* sigprocmask (SIG_SETMASK, &sc->sc_mask, NULL). */ |
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la %r2,SIG_BLOCK |
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la %r3,SC_MASK(%r5) |
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slr %r4,%r4 |
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svc SYS_ify(rt_sigprocmask) |
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|
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/* Load fpu context. */ |
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lfpc SC_FPC(%r5) |
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ld %f0,SC_FPRS(%r5) |
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ld %f1,SC_FPRS+8(%r5) |
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ld %f2,SC_FPRS+16(%r5) |
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ld %f3,SC_FPRS+24(%r5) |
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ld %f4,SC_FPRS+32(%r5) |
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ld %f5,SC_FPRS+40(%r5) |
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ld %f6,SC_FPRS+48(%r5) |
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ld %f7,SC_FPRS+56(%r5) |
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ld %f8,SC_FPRS+64(%r5) |
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ld %f9,SC_FPRS+72(%r5) |
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ld %f10,SC_FPRS+80(%r5) |
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ld %f11,SC_FPRS+88(%r5) |
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ld %f12,SC_FPRS+96(%r5) |
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ld %f13,SC_FPRS+104(%r5) |
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ld %f14,SC_FPRS+112(%r5) |
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ld %f15,SC_FPRS+120(%r5) |
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|
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/* Load general purpose registers. */ |
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lm %r0,%r15,SC_GPRS(%r5) |
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|
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/* Return 1. */ |
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la %r2,1 |
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br %r14 |
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END(__setcontext) |
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|
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weak_alias(__setcontext, setcontext) |
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@ -0,0 +1,34 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc.
|
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Contributed by David Mosberger-Tang <davidm@hpl.hp.com>. |
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|
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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. |
|||
|
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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. |
|||
|
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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 |
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not, write to the Free Software Foundation, Inc., |
|||
59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
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|
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/* Constants shared between setcontext() and getcontext(). Don't
|
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install this header file. */ |
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|
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#define SIG_BLOCK 0 |
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#define SIG_UNBLOCK 1 |
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#define SIG_SETMASK 2 |
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|
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#define SC_FLGS 0x000 |
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#define SC_LINK 0x004 |
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#define SC_MASK 0x008 |
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#define SC_STCK 0x088 |
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#define SC_VERS 0x098 |
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#define SC_GPRS 0x09c |
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#define SC_FPC 0x130 |
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#define SC_FPRS 0x138 |
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|
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@ -1,3 +1,4 @@ |
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clone.S |
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kernel_stat.h |
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sys/procfs.h |
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ucontext_i.h |
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|
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@ -0,0 +1,72 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc. |
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This file is part of the GNU C Library. |
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Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
|||
|
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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. */ |
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|
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#include <sysdep.h> |
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#include <features.h> |
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|
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#include "ucontext_i.h" |
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|
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/* __getcontext (const ucontext_t *ucp) |
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|
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Saves the machine context in UCP such that when it is activated, |
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it appears as if __getcontext() returned again. The only difference |
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is that on a first return, %r2 contains 1 and on a subsequent |
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return, it contains 0. |
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|
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This implementation is intended to be used for *synchronous* context |
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switches only. Therefore, it does not have to save anything |
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other than the PRESERVED state. */ |
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|
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ENTRY(__getcontext) |
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lgr %r5,%r2 |
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|
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/* sigprocmask (SIG_BLOCK, NULL, &sc->sc_mask). */ |
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la %r2,SIG_BLOCK |
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slr %r3,%r3 |
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la %r4,SC_MASK(%r5) |
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svc SYS_ify(rt_sigprocmask) |
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|
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/* Store fpu context. */ |
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stfpc SC_FPC(%r5) |
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std %f0,SC_FPRS(%r5) |
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std %f1,SC_FPRS+8(%r5) |
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std %f2,SC_FPRS+16(%r5) |
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std %f3,SC_FPRS+24(%r5) |
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std %f4,SC_FPRS+32(%r5) |
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std %f5,SC_FPRS+40(%r5) |
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std %f6,SC_FPRS+48(%r5) |
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std %f7,SC_FPRS+56(%r5) |
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std %f8,SC_FPRS+64(%r5) |
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std %f9,SC_FPRS+72(%r5) |
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std %f10,SC_FPRS+80(%r5) |
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std %f11,SC_FPRS+88(%r5) |
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std %f12,SC_FPRS+96(%r5) |
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std %f13,SC_FPRS+104(%r5) |
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std %f14,SC_FPRS+112(%r5) |
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std %f15,SC_FPRS+120(%r5) |
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|
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/* Store general purpose registers. */ |
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stmg %r0,%r15,SC_GPRS(%r5) |
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|
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/* Return 0. */ |
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slgr %r2,%r2 |
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br %r14 |
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END(__getcontext) |
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|
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weak_alias(__getcontext, getcontext) |
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@ -0,0 +1,100 @@ |
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/* Copyright (C) 2001 Free Software Foundation, Inc.
|
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This file is part of the GNU C Library. |
|||
Contributed by Martin Schwidefsky (schwidefsky@de.ibm.com). |
|||
|
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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. */ |
|||
|
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#include <libintl.h> |
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#include <stdarg.h> |
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#include <stdio.h> |
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#include <stdlib.h> |
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#include <ucontext.h> |
|||
|
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/* 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 |
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__makecontext (ucontext_t *ucp, void (*func) (void), int argc, ...) |
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{ |
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unsigned long *sp; |
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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) |
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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) |
|||
@ -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 |
|||
|
|||
@ -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) |
|||
Loading…
Reference in new issue