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Update.
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.
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Ulrich Drepper
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11
ChangeLog
11
ChangeLog
@ -1,3 +1,14 @@
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2002-12-18 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/i386/sysdep.h: Define ENTER_KERNEL macro.
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Use it instead of directly int $0x80.
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* sysdeps/unix/sysv/linux/i386/brk.c: Use ENTER_KERNEL.
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* sysdeps/unix/sysv/linux/i386/mmap64.S: Likewise.
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* sysdeps/unix/sysv/linux/i386/mmap.S: Likewise.
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* sysdeps/unix/sysv/linux/i386/sigaction.c: Likewise.
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* sysdeps/unix/sysv/linux/i386/socket.S: Likewise.
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* sysdeps/unix/sysv/linux/i386/syscall.S: Likewise.
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2002-12-17 Ulrich Drepper <drepper@redhat.com>
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* malloc/malloc.c (mALLOPt): Make sure malloc is initialized.
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@ -1,5 +1,8 @@
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2002-12-18 Ulrich Drepper <drepper@redhat.com>
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* sysdeps/unix/sysv/linux/i386/sysdep-cancel.h: Use ENTER_KERNEL
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macro instead of using int $0x80 directly.
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* sysdeps/pthread/bits/stdio-lock.h: New file.
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* sysdeps/unix/sysv/linux/i386/i486/libc-lowlevelmutex.S: New file.
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* sysdeps/unix/sysv/linux/i386/i586/libc-lowlevelmutex.S: New file.
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@ -41,7 +41,7 @@
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PUSHARGS_##args \
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DOCARGS_##args \
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movl $SYS_ify (syscall_name), %eax; \
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int $0x80 \
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ENTER_KERNEL \
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POPARGS_##args; \
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POPCARGS_##args \
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cmpl $-4095, %eax; \
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@ -1,5 +1,5 @@
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/* brk system call for Linux/i386.
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Copyright (C) 1995, 1996, 2000 Free Software Foundation, Inc.
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Copyright (C) 1995, 1996, 2000, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -36,10 +36,10 @@ __brk (void *addr)
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{
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void *__unbounded newbrk, *__unbounded scratch;
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asm ("movl %%ebx, %1\n" /* Save %ebx in scratch register. */
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"movl %3, %%ebx\n" /* Put ADDR in %ebx to be syscall arg. */
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"int $0x80 # %2\n" /* Perform the system call. */
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"movl %1, %%ebx\n" /* Restore %ebx from scratch register. */
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asm ("movl %%ebx, %1\n\t" /* Save %ebx in scratch register. */
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"movl %3, %%ebx\n\t" /* Put ADDR in %ebx to be syscall arg. */
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ENTER_KERNEL "\n\t" /* Perform the system call. */
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"movl %1, %%ebx" /* Restore %ebx from scratch register. */
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: "=a" (newbrk), "=r" (scratch)
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: "0" (SYS_ify (brk)), "g" (__ptrvalue (addr)));
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@ -1,4 +1,4 @@
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/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
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/* Copyright (C) 1995,96,97,98,99,2000,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -50,7 +50,7 @@ ENTRY (__mmap)
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movl $SYS_ify(mmap2), %eax /* System call number in %eax. */
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/* Do the system call trap. */
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int $0x80
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ENTER_KERNEL
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L(skip):
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/* Restore registers. */
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popl %edi
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@ -1,4 +1,4 @@
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/* Copyright (C) 1995, 96, 97, 98, 99, 2000 Free Software Foundation, Inc.
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/* Copyright (C) 1995,96,97,98,99,2000,2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -65,7 +65,7 @@ ENTRY (BP_SYM (__mmap64))
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/* Do the system call trap. */
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L(do_syscall):
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int $0x80
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ENTER_KERNEL
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/* Restore registers. */
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popl %edi
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@ -110,7 +110,7 @@ L(einval):
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lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */
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/* Do the system call trap. */
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int $0x80
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ENTER_KERNEL
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/* Restore registers. */
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movl %edx, %ebx
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@ -131,9 +131,9 @@ __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
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k_newact.sa_restorer = &restore;
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}
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asm volatile ("pushl %%ebx\n"
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"movl %2, %%ebx\n"
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"int $0x80\n"
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asm volatile ("pushl %%ebx\n\t"
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"movl %2, %%ebx\n\t"
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ENTER_KERNEL_STR "\n\t"
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"popl %%ebx"
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: "=a" (result)
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: "0" (SYS_ify (sigaction)), "mr" (sig),
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@ -57,7 +57,7 @@ ENTRY (__socket)
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lea 4(%esp), %ecx /* Address of args is 2nd arg. */
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/* Do the system call trap. */
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int $0x80
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ENTER_KERNEL
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/* Restore registers. */
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movl %edx, %ebx
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@ -89,7 +89,7 @@ L(pseudo_end):
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lea 8(%esp), %ecx /* Address of args is 2nd arg. */
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/* Do the system call trap. */
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int $0x80
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ENTER_KERNEL
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/* Restore registers. */
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movl %edx, %ebx
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@ -1,4 +1,4 @@
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/* Copyright (C) 1995, 1996, 1998 Free Software Foundation, Inc.
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/* Copyright (C) 1995, 1996, 1998, 2002 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -27,7 +27,7 @@ ENTRY (syscall)
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PUSHARGS_5 /* Save register contents. */
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_DOARGS_5(36) /* Load arguments. */
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movl 16(%esp), %eax /* Load syscall number into %eax. */
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int $0x80 /* Do the system call. */
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ENTER_KERNEL /* Do the system call. */
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POPARGS_5 /* Restore register contents. */
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cmpl $-4095, %eax /* Check %eax for error. */
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jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */
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@ -159,6 +159,11 @@ __i686.get_pc_thunk.reg: \
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# endif /* _LIBC_REENTRANT */
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#endif /* PIC */
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/* The original calling convention for system calls on Linux/i386 is
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to use int $0x80. */
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#define ENTER_KERNEL int $0x80
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/* Linux takes system call arguments in registers:
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syscall number %eax call-clobbered
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@ -208,7 +213,7 @@ __i686.get_pc_thunk.reg: \
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PUSHARGS_##args \
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DOARGS_##args \
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movl $SYS_ify (syscall_name), %eax; \
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int $0x80 \
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ENTER_KERNEL \
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POPARGS_##args
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#define PUSHARGS_0 /* No arguments to push. */
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@ -255,6 +260,10 @@ __i686.get_pc_thunk.reg: \
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#else /* !__ASSEMBLER__ */
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/* The original calling convention for system calls on Linux/i386 is
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to use int $0x80. */
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#define ENTER_KERNEL "int $0x80"
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/* We need some help from the assembler to generate optimal code. We
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define some macros here which later will be used. */
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asm (".L__X'%ebx = 1\n\t"
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@ -315,7 +324,7 @@ asm (".L__X'%ebx = 1\n\t"
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asm volatile ( \
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LOADARGS_##nr \
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"movl %1, %%eax\n\t" \
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"int $0x80\n\t" \
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ENTER_KERNEL "\n\t" \
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RESTOREARGS_##nr \
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: "=a" (resultvar) \
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: "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \
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