diff options
Diffstat (limited to 'sysdeps/unix/sysv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/errnos.h | 32 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/gnu/types.h | 4 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.S | 32 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 31 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/schedbits.h | 51 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/waitflags.h | 30 |
6 files changed, 170 insertions, 10 deletions
diff --git a/sysdeps/unix/sysv/linux/errnos.h b/sysdeps/unix/sysv/linux/errnos.h index be1e4d3feb..868819e6b3 100644 --- a/sysdeps/unix/sysv/linux/errnos.h +++ b/sysdeps/unix/sysv/linux/errnos.h @@ -1 +1,33 @@ +/* errnos.h - error constants. Linux specific version. +Copyright (C) 1996 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 <linux/errno.h> + +#ifndef __ASSEMBLER__ +#if defined __USE_REENTRANT && (!defined _LIBC || defined _LIBC_REENTRANT) +/* Declare alias of `errno' variable so it is accessible even if macro + with name `errno' is defined. */ +extern int __errno; + +/* When using threads, errno is a per-thread value. */ +extern int *__errno_location __P ((void)) __attribute__ ((__const__)); +#define errno (*__errno_location ()) + +#endif +#endif diff --git a/sysdeps/unix/sysv/linux/gnu/types.h b/sysdeps/unix/sysv/linux/gnu/types.h index abfcb6e9c9..745d2d8e2e 100644 --- a/sysdeps/unix/sysv/linux/gnu/types.h +++ b/sysdeps/unix/sysv/linux/gnu/types.h @@ -70,4 +70,8 @@ typedef __kernel_clock_t __clock_t; XPG4 seems to require `unsigned long'. */ typedef unsigned long __fd_mask; +#ifdef __USE_SVID +typedef int key_t; +#endif + #endif /* gnu/types.h */ diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.S b/sysdeps/unix/sysv/linux/i386/sysdep.S index 0130ad02a9..7d5444d6a6 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.S +++ b/sysdeps/unix/sysv/linux/i386/sysdep.S @@ -1,4 +1,4 @@ -/* Copyright (C) 1995 Free Software Foundation, Inc. +/* Copyright (C) 1995, 1996 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 @@ -27,26 +27,46 @@ Cambridge, MA 02139, USA. */ .globl errno .type errno,@object .size errno,4 -errno: .space 4 +errno: .zero 4 .globl _errno .type _errno,@object _errno = errno /* This name is expected by hj libc.so.5 startup code. */ .text -/* The following code is not used at all in the shared library. - The PIC system call stubs set errno themselves. */ +/* The following code is only used in the shared library when we + compile the reentrant version. Otherwise each system call defines + each own version. */ -#ifndef PIC +#ifndef PIC /* The syscall stubs jump here when they detect an error. The code for Linux is almost identical to the canonical Unix/i386 code, except that the error number in %eax is negated. */ -.globl __syscall_error + .globl __syscall_error + .type __syscall_error,@function __syscall_error: negl %eax #define __syscall_error __syscall_error_1 #include <sysdeps/unix/i386/sysdep.S> +#endif /* !PIC */ + + +#ifdef _LIBC_REENTRANT + .globl __errno_location + .type __errno_location,@function +__errno_location: +#ifdef PIC + call .L2 +.L2: popl %ecx + addl $_GLOBAL_OFFSET_TABLE_+[.-.L2], %ecx + movl errno@GOT(%ecx), %eax +#else + movl $errno, %eax +#endif + ret +.Lfe1: + .size __errno_location, .Lfe1-__errno_location #endif diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index c77bbbbf86..96470a19b9 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -45,21 +45,44 @@ Cambridge, MA 02139, USA. */ testl %eax, %eax; \ jl syscall_error; -#ifndef PIC +#ifndef PIC #define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */ #else /* Store (- %eax) into errno through the GOT. */ +#ifdef _LIBC_REENTRANT #define SYSCALL_ERROR_HANDLER \ + .type syscall_error,@function; \ +syscall_error: \ + pushl %ebx; \ + call 0f; \ +0:popl %ebx; \ + xorl %edx, %edx; \ + addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %ebx; \ + subl %eax, %edx; \ + movl errno@GOT(%ebx), %ecx; \ + movl %edx, (%ecx); \ + pushl %edx; \ + call __errno_location@PLT; \ + popl %ecx; \ + popl %ebx; \ + movl %ecx, (%eax); \ + movl $-1, %eax; \ + ret; +#else +#define SYSCALL_ERROR_HANDLER \ + .type syscall_error,@function; \ syscall_error: \ call 0f; \ 0:popl %ecx; \ - negl %eax; \ + xorl %edx, %edx; \ addl $_GLOBAL_OFFSET_TABLE_+[.-0b], %ecx; \ + subl %eax, %edx; \ movl errno@GOT(%ecx), %ecx; \ - movl %eax, (%ecx); \ + movl %edx, (%ecx); \ movl $-1, %eax; \ ret; -#endif +#endif /* _LIBC_REENTRANT */ +#endif /* PIC */ /* Linux takes system call arguments in registers: diff --git a/sysdeps/unix/sysv/linux/schedbits.h b/sysdeps/unix/sysv/linux/schedbits.h new file mode 100644 index 0000000000..ac27b9e2d2 --- /dev/null +++ b/sysdeps/unix/sysv/linux/schedbits.h @@ -0,0 +1,51 @@ +/* Definitions of constants and data structure for POSIX 1003.1b-1993 + scheduling interface. +Copyright (C) 1996 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. */ + +#ifndef _SCHEDBITS_H +#define _SCHEDBITS_H 1 + +/* Scheduling algorithms. */ +#define SCHED_OTHER 0 +#define SCHED_FIFO 1 +#define SCHED_RR 2 + +/* Data structure to describe a process' schedulability. */ +struct sched_params +{ + int sched_priority; +}; + +/* Cloning flags. */ +#define CSIGNAL 0x000000ff /* Signal mask to be sent at exit. */ +#define CLONE_VM 0x00000100 /* Set if VM shared between processes. */ +#define CLONE_FS 0x00000200 /* Set if fs info shared between processes.*/ +#define CLONE_FILES 0x00000400 /* Set if open files shared between processes*/ +#define CLONE_SIGHAND 0x00000800 /* Set if signal handlers shared. */ +#define CLONE_PID 0x00001000 /* Set if pid shared. */ + + +/* Clone current process. The parameter list of FN is not for true. Only + dots is not allowed by ISO C and without argument the compiler would + complain about a missing parameter list. */ +extern int clone __P ((int (*__fn) (void *, ...), void *__child_stack, + int __flags, int __nargs, ...)); + + +#endif /* schedbits.h */ diff --git a/sysdeps/unix/sysv/linux/waitflags.h b/sysdeps/unix/sysv/linux/waitflags.h new file mode 100644 index 0000000000..0be2825159 --- /dev/null +++ b/sysdeps/unix/sysv/linux/waitflags.h @@ -0,0 +1,30 @@ +/* Definitions of flag bits for `waitpid' et al. +Copyright (C) 1992, 1996 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., 675 Mass Ave, +Cambridge, MA 02139, USA. */ + +#ifndef _WAITFLAGS_H + +#define _WAITFLAGS_H 1 + +/* Bits in the third argument to `waitpid'. */ +#define WNOHANG 1 /* Don't block waiting. */ +#define WUNTRACED 2 /* Report status of stopped children. */ + +#define __WCLONE 0x80000000 /* Wait for cloned process. */ + +#endif /* waitflags.h */ |