diff options
Diffstat (limited to 'sysdeps/unix')
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/Dist | 1 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/getcontext.S | 72 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/makecontext.c | 101 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/setcontext.S | 70 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-32/ucontext_i.h | 34 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/Dist | 1 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/getcontext.S | 72 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/makecontext.c | 100 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/setcontext.S | 70 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/s390-64/ucontext_i.h | 34 | ||||
-rw-r--r-- | sysdeps/unix/sysv/linux/s390/swapcontext.c | 33 |
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) |