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-rw-r--r--sysdeps/unix/sysv/linux/i386/brk.c10
-rw-r--r--sysdeps/unix/sysv/linux/i386/mmap.S4
-rw-r--r--sysdeps/unix/sysv/linux/i386/mmap64.S6
-rw-r--r--sysdeps/unix/sysv/linux/i386/sigaction.c6
-rw-r--r--sysdeps/unix/sysv/linux/i386/socket.S4
-rw-r--r--sysdeps/unix/sysv/linux/i386/syscall.S4
-rw-r--r--sysdeps/unix/sysv/linux/i386/sysdep.h13
7 files changed, 28 insertions, 19 deletions
diff --git a/sysdeps/unix/sysv/linux/i386/brk.c b/sysdeps/unix/sysv/linux/i386/brk.c
index 09af9b9f7e..950144d41a 100644
--- a/sysdeps/unix/sysv/linux/i386/brk.c
+++ b/sysdeps/unix/sysv/linux/i386/brk.c
@@ -1,5 +1,5 @@
/* 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.
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;
- asm ("movl %%ebx, %1\n" /* Save %ebx in scratch register. */
- "movl %3, %%ebx\n" /* Put ADDR in %ebx to be syscall arg. */
- "int $0x80 # %2\n" /* Perform the system call. */
- "movl %1, %%ebx\n" /* Restore %ebx from scratch register. */
+ asm ("movl %%ebx, %1\n\t" /* Save %ebx in scratch register. */
+ "movl %3, %%ebx\n\t" /* Put ADDR in %ebx to be syscall arg. */
+ ENTER_KERNEL "\n\t" /* Perform the system call. */
+ "movl %1, %%ebx" /* Restore %ebx from scratch register. */
: "=a" (newbrk), "=r" (scratch)
: "0" (SYS_ify (brk)), "g" (__ptrvalue (addr)));
diff --git a/sysdeps/unix/sysv/linux/i386/mmap.S b/sysdeps/unix/sysv/linux/i386/mmap.S
index c63a49bcd4..ebb21f3d32 100644
--- a/sysdeps/unix/sysv/linux/i386/mmap.S
+++ b/sysdeps/unix/sysv/linux/i386/mmap.S
@@ -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.
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. */
/* Do the system call trap. */
- int $0x80
+ ENTER_KERNEL
L(skip):
/* Restore registers. */
popl %edi
diff --git a/sysdeps/unix/sysv/linux/i386/mmap64.S b/sysdeps/unix/sysv/linux/i386/mmap64.S
index df32998134..3a03335814 100644
--- a/sysdeps/unix/sysv/linux/i386/mmap64.S
+++ b/sysdeps/unix/sysv/linux/i386/mmap64.S
@@ -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.
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. */
L(do_syscall):
- int $0x80
+ ENTER_KERNEL
/* Restore registers. */
popl %edi
@@ -110,7 +110,7 @@ L(einval):
lea ADDR-SVRSP(%esp), %ebx /* Address of args is 1st arg. */
/* Do the system call trap. */
- int $0x80
+ ENTER_KERNEL
/* Restore registers. */
movl %edx, %ebx
diff --git a/sysdeps/unix/sysv/linux/i386/sigaction.c b/sysdeps/unix/sysv/linux/i386/sigaction.c
index 813c9bab77..bfc8b2c2e2 100644
--- a/sysdeps/unix/sysv/linux/i386/sigaction.c
+++ b/sysdeps/unix/sysv/linux/i386/sigaction.c
@@ -131,9 +131,9 @@ __libc_sigaction (int sig, const struct sigaction *act, struct sigaction *oact)
k_newact.sa_restorer = &restore;
}
- asm volatile ("pushl %%ebx\n"
- "movl %2, %%ebx\n"
- "int $0x80\n"
+ asm volatile ("pushl %%ebx\n\t"
+ "movl %2, %%ebx\n\t"
+ ENTER_KERNEL_STR "\n\t"
"popl %%ebx"
: "=a" (result)
: "0" (SYS_ify (sigaction)), "mr" (sig),
diff --git a/sysdeps/unix/sysv/linux/i386/socket.S b/sysdeps/unix/sysv/linux/i386/socket.S
index 53f1be61ea..a5af6b2907 100644
--- a/sysdeps/unix/sysv/linux/i386/socket.S
+++ b/sysdeps/unix/sysv/linux/i386/socket.S
@@ -57,7 +57,7 @@ ENTRY (__socket)
lea 4(%esp), %ecx /* Address of args is 2nd arg. */
/* Do the system call trap. */
- int $0x80
+ ENTER_KERNEL
/* Restore registers. */
movl %edx, %ebx
@@ -89,7 +89,7 @@ L(pseudo_end):
lea 8(%esp), %ecx /* Address of args is 2nd arg. */
/* Do the system call trap. */
- int $0x80
+ ENTER_KERNEL
/* Restore registers. */
movl %edx, %ebx
diff --git a/sysdeps/unix/sysv/linux/i386/syscall.S b/sysdeps/unix/sysv/linux/i386/syscall.S
index 355be5a58a..cd7dc65a5f 100644
--- a/sysdeps/unix/sysv/linux/i386/syscall.S
+++ b/sysdeps/unix/sysv/linux/i386/syscall.S
@@ -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.
The GNU C Library is free software; you can redistribute it and/or
@@ -27,7 +27,7 @@ ENTRY (syscall)
PUSHARGS_5 /* Save register contents. */
_DOARGS_5(36) /* Load arguments. */
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. */
cmpl $-4095, %eax /* Check %eax for error. */
jae SYSCALL_ERROR_LABEL /* Jump to error handler if error. */
diff --git a/sysdeps/unix/sysv/linux/i386/sysdep.h b/sysdeps/unix/sysv/linux/i386/sysdep.h
index 7bf146e8be..5275ebaf57 100644
--- a/sysdeps/unix/sysv/linux/i386/sysdep.h
+++ b/sysdeps/unix/sysv/linux/i386/sysdep.h
@@ -159,6 +159,11 @@ __i686.get_pc_thunk.reg: \
# endif /* _LIBC_REENTRANT */
#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:
syscall number %eax call-clobbered
@@ -208,7 +213,7 @@ __i686.get_pc_thunk.reg: \
PUSHARGS_##args \
DOARGS_##args \
movl $SYS_ify (syscall_name), %eax; \
- int $0x80 \
+ ENTER_KERNEL \
POPARGS_##args
#define PUSHARGS_0 /* No arguments to push. */
@@ -255,6 +260,10 @@ __i686.get_pc_thunk.reg: \
#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
define some macros here which later will be used. */
asm (".L__X'%ebx = 1\n\t"
@@ -315,7 +324,7 @@ asm (".L__X'%ebx = 1\n\t"
asm volatile ( \
LOADARGS_##nr \
"movl %1, %%eax\n\t" \
- "int $0x80\n\t" \
+ ENTER_KERNEL "\n\t" \
RESTOREARGS_##nr \
: "=a" (resultvar) \
: "i" (__NR_##name) ASMFMT_##nr(args) : "memory", "cc"); \
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-15 18:26:23 +0000