mirror of
https://sourceware.org/git/glibc.git
synced 2025-06-05 00:22:17 +03:00
69f155d4fc
1998-04-30 16:45 Ulrich Drepper <drepper@cygnus.com> * inet/ether_aton.c: Including netinet/if_ether.h is not necessary. * locale/Makefile (distribute): Add programs/repertoire.h. (localedef-modules): Add repertoire. (CPPFLAGS): Define REPERTOIREMAP_PATH. * locale/programs/repertoire.c: New file. * locale/programs/repertoire.h: New file. * locale/programs/charmap.c: Starting fixing character set handling to handle multi-byte encodings. * locale/programs/charset.c: Likewise. * locale/programs/charset.h: Likewise. * locale/programs/ld-collate.c: Likewise. * locale/programs/ld-ctype.c: Likewise. * locale/programs/linereader.c: Likewise. * locale/programs/localedef.c: Likewise. * locale/programs/locfile-kw.gperf: Likewise. * locale/programs/locfile-kw.h: Likewise. * locale/programs/locfile-token.h: Likewise. * locale/programs/locfile.h: Likewise. * locale/programs/stringtrans.c: Likewise. 1998-04-18 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/arm/memset.S: Fix off by one error. * sysdeps/unix/sysv/linux/arm/sysdep.h (PSEUDO): On error, call __syscall_error rather than syscall_error directly. 1998-04-17 Philip Blundell <Philip.Blundell@pobox.com> * sysdeps/unix/sysv/linux/arm/mmap.S: New file; implementation of mmap() syscall for ARM. * sysdeps/unix/arm/start.c: New file; startup code for ARM a.out binaries.
110 lines
3.6 KiB
C
110 lines
3.6 KiB
C
/* Copyright (C) 1992, 93, 95, 96, 97, 98 Free Software Foundation, Inc.
|
|
This file is part of the GNU C Library.
|
|
Contributed by Ulrich Drepper, <drepper@gnu.ai.mit.edu>, August 1995.
|
|
ARM changes by Philip Blundell, <pjb27@cam.ac.uk>, May 1997.
|
|
|
|
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 _LINUX_ARM_SYSDEP_H
|
|
#define _LINUX_ARM_SYSDEP_H 1
|
|
|
|
/* There is some commonality. */
|
|
#include <sysdeps/unix/arm/sysdep.h>
|
|
|
|
/* For Linux we can use the system call table in the header file
|
|
/usr/include/asm/unistd.h
|
|
of the kernel. But these symbols do not follow the SYS_* syntax
|
|
so we have to redefine the `SYS_ify' macro here. */
|
|
#undef SYS_ify
|
|
#define SWI_BASE (0x900000)
|
|
#define SYS_ify(syscall_name) (__NR_##syscall_name)
|
|
|
|
|
|
#ifdef ASSEMBLER
|
|
|
|
/* Linux uses a negative return value to indicate syscall errors,
|
|
unlike most Unices, which use the condition codes' carry flag.
|
|
|
|
Since version 2.1 the return value of a system call might be
|
|
negative even if the call succeeded. E.g., the `lseek' system call
|
|
might return a large offset. Therefore we must not anymore test
|
|
for < 0, but test for a real error by making sure the value in R0
|
|
is a real error number. Linus said he will make sure the no syscall
|
|
returns a value in -1 .. -4095 as a valid result so we can savely
|
|
test with -4095. */
|
|
|
|
#undef PSEUDO
|
|
#define PSEUDO(name, syscall_name, args) \
|
|
.text; \
|
|
.type syscall_error,%function ; \
|
|
ENTRY (name) \
|
|
DO_CALL (args, syscall_name); \
|
|
cmn r0, $4096; \
|
|
bhs PLTJMP(C_SYMBOL_NAME(__syscall_error));
|
|
|
|
#undef PSEUDO_END
|
|
#define PSEUDO_END(name) \
|
|
SYSCALL_ERROR_HANDLER \
|
|
END (name)
|
|
|
|
#define SYSCALL_ERROR_HANDLER /* Nothing here; code in sysdep.S is used. */
|
|
|
|
/* Linux takes system call args in registers:
|
|
syscall number in the SWI instruction
|
|
arg 1 r0
|
|
arg 2 r1
|
|
arg 3 r2
|
|
arg 4 r3
|
|
arg 5 r4 (this is different from the APCS convention)
|
|
|
|
The compiler is going to form a call by coming here, through PSEUDO, with
|
|
arguments
|
|
syscall number in the DO_CALL macro
|
|
arg 1 r0
|
|
arg 2 r1
|
|
arg 3 r2
|
|
arg 4 r3
|
|
arg 5 [sp]
|
|
|
|
We need to shuffle values between R4 and the stack so that the caller's
|
|
R4 is not corrupted, and the kernel sees the right argument there.
|
|
|
|
*/
|
|
|
|
#undef DO_CALL
|
|
#define DO_CALL(args, syscall_name) \
|
|
DOARGS_##args \
|
|
swi SYS_ify (syscall_name); \
|
|
UNDOARGS_##args
|
|
|
|
#define DOARGS_0 /* nothing */
|
|
#define DOARGS_1 /* nothing */
|
|
#define DOARGS_2 /* nothing */
|
|
#define DOARGS_3 /* nothing */
|
|
#define DOARGS_4 /* nothing */
|
|
#define DOARGS_5 ldr ip, [sp]; str r4, [sp]; mov r4, ip;
|
|
|
|
#define UNDOARGS_0 /* nothing */
|
|
#define UNDOARGS_1 /* nothing */
|
|
#define UNDOARGS_2 /* nothing */
|
|
#define UNDOARGS_3 /* nothing */
|
|
#define UNDOARGS_4 /* nothing */
|
|
#define UNDOARGS_5 ldr r4, [sp];
|
|
|
|
#endif /* ASSEMBLER */
|
|
|
|
#endif /* linux/arm/sysdep.h */
|