mirrors/glibc
1
0
Fork 0
mirror of https://sourceware.org/git/glibc.git synced 2024-11-24 10:22:41 +08:00
Code Issues Actions Packages Projects Releases Wiki Activity

Update.

Browse Source 
2002-12-18  Ulrich Drepper  <drepper@redhat.com>

	* sysdeps/unix/sysv/linux/i386/sysdep.h: Define ENTER_KERNEL macro.
	Use it instead of directly int $0x80.
	* sysdeps/unix/sysv/linux/i386/brk.c: Use ENTER_KERNEL.
	* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
	* sysdeps/unix/sysv/linux/i386/socket.S: Likewise.
	* sysdeps/unix/sysv/linux/i386/syscall.S: Likewise.
This commit is contained in:
Ulrich Drepper 2002-12-18 11:56:21 +00:00
parent d7913e0e25
commit f051627fad
10 changed files with 43 additions and 20 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

11
ChangeLog
View File

@ -1,3 +1,14 @@
2002-12-18 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/sysdep.h: Define ENTER_KERNEL macro.
Use it instead of directly int $0x80.
* sysdeps/unix/sysv/linux/i386/brk.c: Use ENTER_KERNEL.
* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
* sysdeps/unix/sysv/linux/i386/socket.S: Likewise.
* sysdeps/unix/sysv/linux/i386/syscall.S: Likewise.
2002-12-17 Ulrich Drepper <drepper@redhat.com> 2002-12-17 Ulrich Drepper <drepper@redhat.com>
* malloc/malloc.c (mALLOPt): Make sure malloc is initialized. * malloc/malloc.c (mALLOPt): Make sure malloc is initialized.

3
nptl/ChangeLog
View File

@ -1,5 +1,8 @@
2002-12-18 Ulrich Drepper <drepper@redhat.com> 2002-12-18 Ulrich Drepper <drepper@redhat.com>
* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Use ENTER_KERNEL
macro instead of using int $0x80 directly.
* sysdeps/pthread/bits/stdio-lock.h: New file. * sysdeps/pthread/bits/stdio-lock.h: New file.
* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: New file. * sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: New file.
* sysdeps/unix/sysv/linux/i386/i586/libc-lowlevelmutex.S: New file. * sysdeps/unix/sysv/linux/i386/i586/libc-lowlevelmutex.S: New file.

2
nptl/sysdeps/unix/sysv/linux/i386/sysdep-cancel.h
View File

@ -41,7 +41,7 @@
PUSHARGS_##args \ PUSHARGS_##args \
DOCARGS_##args \ DOCARGS_##args \
movl $SYS_ify (syscall_name), %eax; \ movl $SYS_ify (syscall_name), %eax; \
int $0x80 \ ENTER_KERNEL \
POPARGS_##args; \ POPARGS_##args; \
POPCARGS_##args \ POPCARGS_##args \
cmpl $-4095, %eax; \ cmpl $-4095, %eax; \

10
sysdeps/unix/sysv/linux/i386/brk.c
View File

@ -1,5 +1,5 @@
/* brk system call for Linux/i386. /* brk system call for Linux/i386.
Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc. Copyright (C) 1995, 1996, 2000, 2002 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 The GNU C Library is free software; you can redistribute it and/or
@ -36,10 +36,10 @@ __brk (void *addr)
{ {
void *__unbounded newbrk, *__unbounded scratch; void *__unbounded newbrk, *__unbounded scratch;
asm ("movl %%ebx, %1\n" /* Save %ebx in scratch register. */ asm ("movl %%ebx, %1\n\t" /* Save %ebx in scratch register. */
"movl %3, %%ebx\n" /* Put ADDR in %ebx to be syscall arg. */ "movl %3, %%ebx\n\t" /* Put ADDR in %ebx to be syscall arg. */
"int $0x80 # %2\n" /* Perform the system call. */ ENTER_KERNEL "\n\t" /* Perform the system call. */
"movl %1, %%ebx\n" /* Restore %ebx from scratch register. */ "movl %1, %%ebx" /* Restore %ebx from scratch register. */
: "=a" (newbrk), "=r" (scratch) : "=a" (newbrk), "=r" (scratch)
: "0" (SYS_ify (brk)), "g" (__ptrvalue (addr))); : "0" (SYS_ify (brk)), "g" (__ptrvalue (addr)));

4
sysdeps/unix/sysv/linux/i386/mmap.S
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. /* Copyright (C) 1995,96,97,98,99,2000,2002 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 The GNU C Library is free software; you can redistribute it and/or
@ -50,7 +50,7 @@ ENTRY (__mmap)
movl $SYS_ify(mmap2), %eax /* System call number in %eax. */ movl $SYS_ify(mmap2), %eax /* System call number in %eax. */
/* Do the system call trap. */ /* Do the system call trap. */
int $0x80 ENTER_KERNEL
L(skip): L(skip):
/* Restore registers. */ /* Restore registers. */
popl %edi popl %edi

6
sysdeps/unix/sysv/linux/i386/mmap64.S
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. /* Copyright (C) 1995,96,97,98,99,2000,2002 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 The GNU C Library is free software; you can redistribute it and/or
@ -65,7 +65,7 @@ ENTRY (BP_SYM (__mmap64))
/* Do the system call trap. */ /* Do the system call trap. */
L(do_syscall): L(do_syscall):
int $0x80 ENTER_KERNEL
/* Restore registers. */ /* Restore registers. */
popl %edi popl %edi
@ -110,7 +110,7 @@ L(einval):
lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */ lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */
/* Do the system call trap. */ /* Do the system call trap. */
int $0x80 ENTER_KERNEL
/* Restore registers. */ /* Restore registers. */
movl %edx, %ebx movl %edx, %ebx

6
sysdeps/unix/sysv/linux/i386/sigaction.c
View File

@ -131,9 +131,9 @@ __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
k_newact.sa_restorer = &restore; k_newact.sa_restorer = &restore;
} }
asm volatile ("pushl %%ebx\n" asm volatile ("pushl %%ebx\n\t"
"movl %2, %%ebx\n" "movl %2, %%ebx\n\t"
"int $0x80\n" ENTER_KERNEL_STR "\n\t"
"popl %%ebx" "popl %%ebx"
: "=a" (result) : "=a" (result)
: "0" (SYS_ify (sigaction)), "mr" (sig), : "0" (SYS_ify (sigaction)), "mr" (sig),

4
sysdeps/unix/sysv/linux/i386/socket.S
View File

@ -57,7 +57,7 @@ ENTRY (__socket)
lea 4(%esp), %ecx /* Address of args is 2nd arg. */ lea 4(%esp), %ecx /* Address of args is 2nd arg. */
/* Do the system call trap. */ /* Do the system call trap. */
int $0x80 ENTER_KERNEL
/* Restore registers. */ /* Restore registers. */
movl %edx, %ebx movl %edx, %ebx
@ -89,7 +89,7 @@ L(pseudo_end):
lea 8(%esp), %ecx /* Address of args is 2nd arg. */ lea 8(%esp), %ecx /* Address of args is 2nd arg. */
/* Do the system call trap. */ /* Do the system call trap. */
int $0x80 ENTER_KERNEL
/* Restore registers. */ /* Restore registers. */
movl %edx, %ebx movl %edx, %ebx

4
sysdeps/unix/sysv/linux/i386/syscall.S
View File

@ -1,4 +1,4 @@
/* Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc. /* Copyright (C) 1995, 1996, 1998, 2002 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 The GNU C Library is free software; you can redistribute it and/or
@ -27,7 +27,7 @@ ENTRY (syscall)
PUSHARGS_5 /* Save register contents. */ PUSHARGS_5 /* Save register contents. */
_DOARGS_5(36) /* Load arguments. */ _DOARGS_5(36) /* Load arguments. */
movl 16(%esp), %eax /* Load syscall number into %eax. */ movl 16(%esp), %eax /* Load syscall number into %eax. */
int $0x80 /* Do the system call. */ ENTER_KERNEL /* Do the system call. */
POPARGS_5 /* Restore register contents. */ POPARGS_5 /* Restore register contents. */
cmpl $-4095, %eax /* Check %eax for error. */ cmpl $-4095, %eax /* Check %eax for error. */
jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */ jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */

13
sysdeps/unix/sysv/linux/i386/sysdep.h
View File

@ -159,6 +159,11 @@ __i686.get_pc_thunk.reg: \
# endif /* _LIBC_REENTRANT */ # endif /* _LIBC_REENTRANT */
#endif /* PIC */ #endif /* PIC */
/* The original calling convention for system calls on Linux/i386 is
to use int $0x80. */
#define ENTER_KERNEL int $0x80
/* Linux takes system call arguments in registers: /* Linux takes system call arguments in registers:
syscall number %eax call-clobbered syscall number %eax call-clobbered
@ -208,7 +213,7 @@ __i686.get_pc_thunk.reg: \
PUSHARGS_##args \ PUSHARGS_##args \
DOARGS_##args \ DOARGS_##args \
movl $SYS_ify (syscall_name), %eax; \ movl $SYS_ify (syscall_name), %eax; \
int $0x80 \ ENTER_KERNEL \
POPARGS_##args POPARGS_##args
#define PUSHARGS_0 /* No arguments to push. */ #define PUSHARGS_0 /* No arguments to push. */
@ -255,6 +260,10 @@ __i686.get_pc_thunk.reg: \
#else /* !__ASSEMBLER__ */ #else /* !__ASSEMBLER__ */
/* The original calling convention for system calls on Linux/i386 is
to use int $0x80. */
#define ENTER_KERNEL "int $0x80"
/* We need some help from the assembler to generate optimal code. We /* We need some help from the assembler to generate optimal code. We
define some macros here which later will be used. */ define some macros here which later will be used. */
asm (".L__X'%ebx = 1\n\t" asm (".L__X'%ebx = 1\n\t"
@ -315,7 +324,7 @@ asm (".L__X'%ebx = 1\n\t"
asm volatile ( \ asm volatile ( \
LOADARGS_##nr \ LOADARGS_##nr \
"movl %1, %%eax\n\t" \ "movl %1, %%eax\n\t" \
"int $0x80\n\t" \ ENTER_KERNEL "\n\t" \
RESTOREARGS_##nr \ RESTOREARGS_##nr \
: "=a" (resultvar) \ : "=a" (resultvar) \
: "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \ : "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \