Subversion Repositories HelenOS

Compare Revisions

Ignore whitespace Rev 2612 → Rev 2613

/trunk/uspace/lib/libc/arch/ia32/Makefile.inc
32,7 → 32,7
TARGET = i686-pc-linux-gnu
TOOLCHAIN_DIR = /usr/local/i686/bin
 
ARCH_SOURCES += arch/$(ARCH)/src/syscall.c \
ARCH_SOURCES += arch/$(ARCH)/src/syscall.S \
arch/$(ARCH)/src/fibril.S \
arch/$(ARCH)/src/tls.c
 
/trunk/uspace/lib/libc/arch/ia32/src/syscall.c
File deleted
/trunk/uspace/lib/libc/arch/ia32/src/fibril.S
74,11 → 74,11
movl %edx,0(%esp) # ctx->pc -> saver's return %eip
 
# Set thread local storage
pushl %edi
movl 24(%eax), %eax # Set arg1 to TLS addr
movl $1, %edi # Syscall 1
pushl %edx
movl 24(%eax), %edx # Set arg1 to TLS addr
movl $1, %eax # Syscall SYS_TLS_SET
int $0x30
popl %edi
popl %edx
xorl %eax,%eax # context_restore returns 0
ret
/trunk/uspace/lib/libc/arch/ia32/src/syscall.S
0,0 → 1,56
#
# Copyright (c) 2007 Jakub Jermar
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# - Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# - Redistributions in binary form must reproduce the above copyright
# notice, this list of conditions and the following disclaimer in the
# documentation and/or other materials provided with the distribution.
# - The name of the author may not be used to endorse or promote products
# derived from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#
 
.text
 
/** Syscall wrapper.
*
* Mind the order of arguments. First two arguments and the syscall number go to
* scratch registers. An optimized version of this wrapper for fewer arguments
* could benefit from this and not save unused registers on the stack.
*/
.global __syscall
__syscall:
pushl %ebx
pushl %esi
pushl %edi
pushl %ebp
movl 20(%esp), %edx # First argument.
movl 24(%esp), %ecx # Second argument.
movl 28(%esp), %ebx # Third argument.
movl 32(%esp), %esi # Fourth argument.
movl 36(%esp), %edi # Fifth argument.
movl 40(%esp), %ebp # Sixth argument.
movl 44(%esp), %eax # Syscall number.
int $0x30
popl %ebp
popl %edi
popl %esi
popl %ebx
ret