diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/arm')
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/Makefile | 3 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/ioperm.c | 11 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/sigaction.c | 21 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/sigrestorer.S | 33 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/sysdep.h | 2 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/arm/vfork.S | 50 |
6 files changed, 92 insertions, 28 deletions
diff --git a/sysdeps/unix/sysv/linux/arm/Makefile b/sysdeps/unix/sysv/linux/arm/Makefile index d76698b405..99a560c859 100644 --- a/sysdeps/unix/sysv/linux/arm/Makefile +++ b/sysdeps/unix/sysv/linux/arm/Makefile @@ -4,5 +4,6 @@ endif ifeq ($(subdir),signal) sysdep_routines += rt_sigsuspend rt_sigprocmask rt_sigtimedwait \ - rt_sigqueueinfo rt_sigaction rt_sigpending + rt_sigqueueinfo rt_sigaction rt_sigpending \ + sigrestorer endif diff --git a/sysdeps/unix/sysv/linux/arm/ioperm.c b/sysdeps/unix/sysv/linux/arm/ioperm.c index 551fc97d0c..260226d9f3 100644 --- a/sysdeps/unix/sysv/linux/arm/ioperm.c +++ b/sysdeps/unix/sysv/linux/arm/ioperm.c @@ -1,4 +1,4 @@ -/* Copyright (C) 1998 Free Software Foundation, Inc. +/* Copyright (C) 1998, 1999 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Phil Blundell, based on the Alpha version by David Mosberger. @@ -214,9 +214,6 @@ _iopl (unsigned int level) void _outb (unsigned char b, unsigned long int port) { - if (port >= MAX_PORT) - return; - *((volatile unsigned char *)(IO_ADDR (port))) = b; } @@ -224,9 +221,6 @@ _outb (unsigned char b, unsigned long int port) void _outw (unsigned short b, unsigned long int port) { - if (port >= MAX_PORT) - return; - *((volatile unsigned short *)(IO_ADDR (port))) = b; } @@ -234,9 +228,6 @@ _outw (unsigned short b, unsigned long int port) void _outl (unsigned int b, unsigned long int port) { - if (port >= MAX_PORT) - return; - *((volatile unsigned long *)(IO_ADDR (port))) = b; } diff --git a/sysdeps/unix/sysv/linux/arm/sigaction.c b/sysdeps/unix/sysv/linux/arm/sigaction.c index 76399a2b7a..102d66595b 100644 --- a/sysdeps/unix/sysv/linux/arm/sigaction.c +++ b/sysdeps/unix/sysv/linux/arm/sigaction.c @@ -39,11 +39,14 @@ int __libc_missing_rt_sigs; #define SA_RESTORER 0x04000000 +extern void __default_sa_restorer(void); +extern void __default_rt_sa_restorer(void); + /* When RT signals are in use we need to use a different return stub. */ #ifdef __NR_rt_sigreturn #define choose_restorer(flags) \ - (flags & SA_SIGINFO) ? &&__default_rt_sa_restorer \ - : &&__default_sa_restorer + (flags & SA_SIGINFO) ? __default_rt_sa_restorer \ + : __default_sa_restorer #else #define choose_restorer(flags) \ &&__default_sa_restorer @@ -142,20 +145,6 @@ __sigaction (sig, act, oact) #endif } return result; - - /* If no SA_RESTORER function was specified by the application we use - this one. This avoids the need for the kernel to synthesise a return - instruction on the stack, which would involve expensive cache flushes. */ - __default_sa_restorer: - asm volatile ("swi %0" : : "i" (__NR_sigreturn)); - -#ifdef __NR_rt_sigreturn - __default_rt_sa_restorer: - asm volatile ("swi %0" : : "i" (__NR_rt_sigreturn)); -#endif - - /* NOTREACHED */ - return -1; } weak_alias (__sigaction, sigaction) diff --git a/sysdeps/unix/sysv/linux/arm/sigrestorer.S b/sysdeps/unix/sysv/linux/arm/sigrestorer.S new file mode 100644 index 0000000000..8d32e4ce9c --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/sigrestorer.S @@ -0,0 +1,33 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + 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> + +/* If no SA_RESTORER function was specified by the application we use + one of these. This avoids the need for the kernel to synthesise a return + instruction on the stack, which would involve expensive cache flushes. */ + +ENTRY(__default_sa_restorer) + swi SYS_ify(sigreturn) + +#ifdef __NR_rt_sigreturn + +ENTRY(__default_rt_sa_restorer) + swi SYS_ify(rt_sigreturn) + +#endif diff --git a/sysdeps/unix/sysv/linux/arm/sysdep.h b/sysdeps/unix/sysv/linux/arm/sysdep.h index d7e28220a7..7812e99075 100644 --- a/sysdeps/unix/sysv/linux/arm/sysdep.h +++ b/sysdeps/unix/sysv/linux/arm/sysdep.h @@ -114,7 +114,7 @@ { \ register int _a1 asm ("a1"); \ LOAD_ARGS_##nr (args) \ - asm volatile ("swi %1" \ + asm volatile ("swi %1 @ syscall " #name \ : "=r" (_a1) \ : "i" (SYS_ify(name)) ASM_ARGS_##nr \ : "a1"); \ diff --git a/sysdeps/unix/sysv/linux/arm/vfork.S b/sysdeps/unix/sysv/linux/arm/vfork.S new file mode 100644 index 0000000000..3d5bd95300 --- /dev/null +++ b/sysdeps/unix/sysv/linux/arm/vfork.S @@ -0,0 +1,50 @@ +/* Copyright (C) 1999 Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Philip Blundell <philb@gnu.org>. + + 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> +#define _ERRNO_H 1 +#include <bits/errno.h> + +/* Clone the calling process, but without copying the whole address space. + The calling process is suspended until the new process exits or is + replaced by a call to `execve'. Return -1 for errors, 0 to the new process, + and the process ID of the new process to the old process. */ + +ENTRY (__vfork) + +#ifdef __NR_vfork + swi __NR_vfork + cmn a1, #4096 + RETINSTR(movcc, pc, lr) + + /* Check if vfork syscall is known at all. */ + ldr a2, =-ENOSYS + teq a1, a2 + bne PLTJMP(C_SYMBOL_NAME(__syscall_error)) +#endif + + /* If we don't have vfork, fork is close enough. */ + swi __NR_fork + cmn a1, #4096 + RETINSTR(movcc, pc, lr) + b PLTJMP(C_SYMBOL_NAME(__syscall_error)) + +PSEUDO_END (__vfork) + +weak_alias (__vfork, vfork) |