2002-05-30 23:35:59 +00:00
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/* Copyright (C) 1998, 2000, 2002 Free Software Foundation, Inc.
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1998-04-02 17:42:53 +00:00
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This file is part of the GNU C Library.
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Contributed by Ulrich Drepper, <drepper@cygnus.com>, 1998.
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The GNU C Library is free software; you can redistribute it and/or
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2001-07-06 04:58:11 +00:00
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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1998-04-02 17:42:53 +00:00
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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
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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2001-07-06 04:58:11 +00:00
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Lesser General Public License for more details.
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1998-04-02 17:42:53 +00:00
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2001-07-06 04:58:11 +00:00
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, write to the Free
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Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
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02111-1307 USA. */
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1998-04-02 17:42:53 +00:00
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#ifndef _LINUX_I386_I686_SYSDEP_H
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#define _LINUX_I386_I686_SYSDEP_H 1
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/* There is some commonality. */
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#include <sysdeps/unix/sysv/linux/i386/sysdep.h>
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2000-06-27 01:52:26 +00:00
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#include <bp-sym.h>
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#include <bp-asm.h>
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1998-04-02 17:42:53 +00:00
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/* We define special versions of the error handler code to match the i686's
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deep branch prediction mechanism. */
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#ifdef PIC
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# undef SYSCALL_ERROR_HANDLER
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2002-07-20 01:14:41 +00:00
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# undef SETUP_PIC_REG
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# ifndef HAVE_HIDDEN
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# define SETUP_PIC_REG(reg) \
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2002-05-30 23:35:59 +00:00
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call 1f; \
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.subsection 1; \
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2002-07-20 01:14:41 +00:00
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1:movl (%esp), %e##reg; \
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2002-05-30 23:35:59 +00:00
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ret; \
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.previous
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2002-07-20 01:14:41 +00:00
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# else
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# define SETUP_PIC_REG(reg) \
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.section .gnu.linkonce.t.__i686.get_pc_thunk.reg,"ax",@progbits; \
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.globl __i686.get_pc_thunk.reg; \
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.hidden __i686.get_pc_thunk.reg; \
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.type __i686.get_pc_thunk.reg,@function; \
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__i686.get_pc_thunk.reg: \
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movl (%esp), %e##reg; \
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1998-04-02 17:42:53 +00:00
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ret; \
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2002-05-30 23:35:59 +00:00
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.previous; \
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2002-07-20 01:14:41 +00:00
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call __i686.get_pc_thunk.reg
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# endif
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2002-05-30 23:35:59 +00:00
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2002-07-20 01:14:41 +00:00
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/* Store (- %eax) into errno through the GOT. */
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# ifdef _LIBC_REENTRANT
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# if USE_TLS && HAVE___THREAD
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# define SYSCALL_ERROR_HANDLER \
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0:SETUP_PIC_REG (cx); \
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addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
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xorl %edx, %edx; \
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subl %eax, %edx; \
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movl %gs:0, %eax; \
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subl errno@gottpoff(%ecx), %eax; \
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movl %edx, (%eax); \
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orl $-1, %eax; \
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jmp L(pseudo_end);
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# else
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# define SYSCALL_ERROR_HANDLER \
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1998-06-07 14:06:56 +00:00
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0:pushl %ebx; \
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2002-07-20 01:14:41 +00:00
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SETUP_PIC_REG(bx); \
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1998-04-02 17:42:53 +00:00
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addl $_GLOBAL_OFFSET_TABLE_, %ebx; \
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xorl %edx, %edx; \
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subl %eax, %edx; \
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pushl %edx; \
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2000-06-27 01:52:26 +00:00
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PUSH_ERRNO_LOCATION_RETURN; \
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call BP_SYM (__errno_location)@PLT; \
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POP_ERRNO_LOCATION_RETURN; \
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1998-04-02 17:42:53 +00:00
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popl %ecx; \
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popl %ebx; \
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movl %ecx, (%eax); \
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Update.
1998-08-23 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/Versions [GLIBC_2.1]: Add
__modify_ldt and modify_ldt.
* sysdeps/unix/sysv/linux/i386/syscalls.list: Add modify_ldt.
* sysdeps/unix/sysv/linux/i386/sysdep.h (SYSCALL_ERROR_HANDLER):
Use orl $-1 instead of movl $-1 to save two bytes.
* sysdeps/unix/sysv/linux/i386/i686/sysdep.h (SYSCALL_ERROR_HANDLER):
Likewise.
1998-08-17 H.J. Lu <hjl@gnu.org>
* libio/Versions (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.1.
* libio/fileops.c (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Change the prefix to
"_IO_new_". Added to GLIBC_2.1.
* libio/libioP.h (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Add prototypes for the prefix
"_IO_new_".
* libio/oldfileops.c (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.0.
1998-08-23 Richard Henderson <rth@cygnus.com>
* Makeconfig (LDFLAGS): Remove.
* csu/initfini.c: Return to .text before __gmon_start__.
* elf/elf.h (EM_FAKE_ALPHA): Rename from EM_OLD_ALPHA.
(STO_MIPS_*): Rename from STO_*.
(STB_MIPS_SPLIT_COMMON): Rename from STB_SPLIT_COMMON.
(STO_ALPHA_NOPV, STO_ALPHA_STD_GPLOAD): New.
* math/atest-exp.c (mpn_bitsize): Fix bit location calculation.
(main): e3s is negative on zero.
* math/atest-exp2.c: Likewise.
* math/atest-sincos.c: Likewise.
1998-08-23 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* Makerules (install): Add comment about absolute paths.
1998-08-23 Ulrich Drepper <drepper@cygnus.com>
* libio/vsnprintf.c (_IO_vsnprintf): Set first byte of destination
array to NUL to handle maxlen==1 case correctly.
Patch by HJ Lu.
1998-08-23 Richard Henderson <rth@cygnus.com>
1998-08-23 18:23:26 +00:00
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orl $-1, %eax; \
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1998-06-07 14:06:56 +00:00
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jmp L(pseudo_end);
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1998-04-02 17:42:53 +00:00
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/* A quick note: it is assumed that the call to `__errno_location' does
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not modify the stack! */
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2002-05-30 23:35:59 +00:00
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# endif
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2002-07-20 01:14:41 +00:00
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# else
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2002-05-30 23:35:59 +00:00
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# define SYSCALL_ERROR_HANDLER \
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2002-07-20 01:14:41 +00:00
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0:SETUP_PIC_REG(cx); \
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1998-04-02 17:42:53 +00:00
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addl $_GLOBAL_OFFSET_TABLE_, %ecx; \
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xorl %edx, %edx; \
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subl %eax, %edx; \
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movl errno@GOT(%ecx), %ecx; \
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movl %edx, (%ecx); \
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Update.
1998-08-23 Ulrich Drepper <drepper@cygnus.com>
* sysdeps/unix/sysv/linux/i386/Versions [GLIBC_2.1]: Add
__modify_ldt and modify_ldt.
* sysdeps/unix/sysv/linux/i386/syscalls.list: Add modify_ldt.
* sysdeps/unix/sysv/linux/i386/sysdep.h (SYSCALL_ERROR_HANDLER):
Use orl $-1 instead of movl $-1 to save two bytes.
* sysdeps/unix/sysv/linux/i386/i686/sysdep.h (SYSCALL_ERROR_HANDLER):
Likewise.
1998-08-17 H.J. Lu <hjl@gnu.org>
* libio/Versions (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.1.
* libio/fileops.c (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Change the prefix to
"_IO_new_". Added to GLIBC_2.1.
* libio/libioP.h (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Add prototypes for the prefix
"_IO_new_".
* libio/oldfileops.c (_IO_do_write, _IO_file_attach,
_IO_file_close_it, _IO_file_finish, _IO_file_fopen,
_IO_file_init, _IO_file_overflow, _IO_file_seekoff,
_IO_file_setbuf, _IO_file_sync, _IO_file_underflow,
_IO_file_write, _IO_file_xsputn): Added to GLIBC_2.0.
1998-08-23 Richard Henderson <rth@cygnus.com>
* Makeconfig (LDFLAGS): Remove.
* csu/initfini.c: Return to .text before __gmon_start__.
* elf/elf.h (EM_FAKE_ALPHA): Rename from EM_OLD_ALPHA.
(STO_MIPS_*): Rename from STO_*.
(STB_MIPS_SPLIT_COMMON): Rename from STB_SPLIT_COMMON.
(STO_ALPHA_NOPV, STO_ALPHA_STD_GPLOAD): New.
* math/atest-exp.c (mpn_bitsize): Fix bit location calculation.
(main): e3s is negative on zero.
* math/atest-exp2.c: Likewise.
* math/atest-sincos.c: Likewise.
1998-08-23 Andreas Jaeger <aj@arthur.rhein-neckar.de>
* Makerules (install): Add comment about absolute paths.
1998-08-23 Ulrich Drepper <drepper@cygnus.com>
* libio/vsnprintf.c (_IO_vsnprintf): Set first byte of destination
array to NUL to handle maxlen==1 case correctly.
Patch by HJ Lu.
1998-08-23 Richard Henderson <rth@cygnus.com>
1998-08-23 18:23:26 +00:00
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orl $-1, %eax; \
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1998-06-07 14:06:56 +00:00
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jmp L(pseudo_end);
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1998-04-02 17:42:53 +00:00
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# endif /* _LIBC_REENTRANT */
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#endif /* PIC */
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#endif /* linux/i386/i686/sysdep.h */
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