diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/i386')
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/syscall.S | 30 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.S | 32 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/i386/sysdep.h | 9 |
3 files changed, 37 insertions, 34 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/syscall.S b/sysdeps/unix/sysv/linux/i386/syscall.S index 018a86ee39..6a020e0d0e 100644 --- a/sysdeps/unix/sysv/linux/i386/syscall.S +++ b/sysdeps/unix/sysv/linux/i386/syscall.S @@ -1,25 +1,25 @@ /* Copyright (C) 1995, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + 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 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. + 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. */ + 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> /* Please consult the file sysdeps/unix/sysv/linux/i386/sysdep.h for - more information about the value -125 used below.*/ + more information about the value -4095 used below.*/ .text ENTRY (syscall) @@ -29,7 +29,7 @@ ENTRY (syscall) movl 16(%esp), %eax /* Load syscall number into %eax. */ int $0x80 /* Do the system call. */ POPARGS_5 /* Restore register contents. */ - cmpl $-125, %eax /* Check %eax for error. */ + cmpl $-4095, %eax /* Check %eax for error. */ jae syscall_error /* Jump to error handler if error. */ ret /* Return to caller. */ diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.S b/sysdeps/unix/sysv/linux/i386/sysdep.S index c9c78842d8..d676004084 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.S +++ b/sysdeps/unix/sysv/linux/i386/sysdep.S @@ -1,20 +1,20 @@ /* Copyright (C) 1995, 1996 Free Software Foundation, Inc. -This file is part of the GNU C Library. + 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 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. + 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. */ + 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> @@ -54,7 +54,11 @@ ENTRY (__syscall_error) #endif /* !PIC */ -ENTRY (__errno_location) + .weak __errno_location + .type __errno_location,@function + .align 16 +__errno_location: + CALL_MCOUNT #ifdef PIC call .L2 .L2: popl %ecx diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h index 5d378fd179..7418982c2a 100644 --- a/sysdeps/unix/sysv/linux/i386/sysdep.h +++ b/sysdeps/unix/sysv/linux/i386/sysdep.h @@ -40,16 +40,15 @@ Cambridge, MA 02139, USA. */ 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 %eax - is a real error number. For now (as of 2.1.1) 122 is the largest - defined error number. Given a bit room for development, Linus - chose in <asm/unistd.h> to use the values -125 to -1 for error - values. We follow him here. */ + 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; \ ENTRY (name) \ DO_CALL (args, syscall_name); \ - cmpl $-125, %eax; \ + cmpl $-4095, %eax; \ jae syscall_error; #undef PSEUDO_END |