Sweden-Number/libs/wine/port.c

158 lines
6.4 KiB
C

/*
* Wine portability routines
*
* Copyright 2000 Alexandre Julliard
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
*/
#include "config.h"
#include "wine/port.h"
#include "wine/asm.h"
#ifdef __ASM_OBSOLETE
#include <stdlib.h>
#include <string.h>
#include <sys/types.h>
#define WINE_UNICODE_INLINE /* nothing */
#include "wine/unicode.h"
/* functions from libwine_port that are also exported from libwine for backwards compatibility,
* on platforms that require it */
const void *libwine_port_functions[] =
{
strtolW,
vsnprintfW,
};
/* no longer used, for backwards compatibility only */
struct wine_pthread_functions;
static void *pthread_functions[8];
/***********************************************************************
* wine_pthread_get_functions
*/
void wine_pthread_get_functions_obsolete( struct wine_pthread_functions *functions, size_t size )
{
memcpy( functions, &pthread_functions, min( size, sizeof(pthread_functions) ));
}
/***********************************************************************
* wine_pthread_set_functions
*/
void wine_pthread_set_functions_obsolete( const struct wine_pthread_functions *functions, size_t size )
{
memcpy( &pthread_functions, functions, min( size, sizeof(pthread_functions) ));
}
/***********************************************************************
* wine_call_on_stack
*
* Switch to the specified stack to call the function and return.
*/
extern int wine_call_on_stack_obsolete( int (*func)(void *), void *arg, void *stack );
#if defined(__i386__) && defined(__GNUC__)
__ASM_GLOBAL_FUNC( wine_call_on_stack_obsolete,
"pushl %ebp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %ebp,0\n\t")
"pushl %esi\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 4\n\t")
__ASM_CFI(".cfi_rel_offset %esi,0\n\t")
"movl %esp,%esi\n\t"
__ASM_CFI(".cfi_def_cfa_register %esi\n\t")
"movl 12(%esp),%ecx\n\t" /* func */
"movl 16(%esp),%edx\n\t" /* arg */
"movl 20(%esp),%eax\n\t" /* stack */
"andl $~15,%eax\n\t"
"subl $12,%eax\n\t"
"movl %eax,%esp\n\t"
"pushl %edx\n\t"
"xorl %ebp,%ebp\n\t"
"call *%ecx\n\t"
"movl %esi,%esp\n\t"
"popl %esi\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -4\n\t")
__ASM_CFI(".cfi_same_value %esi\n\t")
"popl %ebp\n\t"
__ASM_CFI(".cfi_def_cfa %esp,4\n\t")
__ASM_CFI(".cfi_same_value %ebp\n\t")
"ret" )
#elif defined(__x86_64__) && defined(__GNUC__)
__ASM_GLOBAL_FUNC( wine_call_on_stack_obsolete,
"pushq %rbp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset 8\n\t")
__ASM_CFI(".cfi_rel_offset %rbp,0\n\t")
"movq %rsp,%rbp\n\t"
__ASM_CFI(".cfi_def_cfa_register %rbp\n\t")
"movq %rdi,%rax\n\t" /* func */
"movq %rsi,%rdi\n\t" /* arg */
"andq $~15,%rdx\n\t" /* stack */
"movq %rdx,%rsp\n\t"
"callq *%rax\n\t" /* call func */
"movq %rbp,%rsp\n\t"
__ASM_CFI(".cfi_def_cfa_register %rsp\n\t")
"popq %rbp\n\t"
__ASM_CFI(".cfi_adjust_cfa_offset -8\n\t")
__ASM_CFI(".cfi_same_value %rbp\n\t")
"ret")
#elif defined(__arm__) && defined(__GNUC__)
__ASM_GLOBAL_FUNC( wine_call_on_stack_obsolete,
"push {r4,LR}\n\t" /* save return address on stack */
"mov r4, sp\n\t" /* store old sp in local var */
"mov sp, r2\n\t" /* stack */
"mov r2, r0\n\t" /* func -> scratch register */
"mov r0, r1\n\t" /* arg */
"blx r2\n\t" /* call func */
"mov sp, r4\n\t" /* restore old sp from local var */
"pop {r4,PC}") /* fetch return address into pc */
#elif defined(__aarch64__) && defined(__GNUC__)
__ASM_GLOBAL_FUNC( wine_call_on_stack_obsolete,
"stp x29, x30, [sp,#-32]!\n\t" /* save return address on stack */
"str x19, [sp,#16]\n\t" /* save register on stack */
"mov x19, sp\n\t" /* store old sp in local var */
"mov sp, x2\n\t" /* stack */
"mov x2, x0\n\t" /* func -> scratch register */
"mov x0, x1\n\t" /* arg */
"blr x2\n\t" /* call func */
"mov sp, x19\n\t" /* restore old sp from local var */
"ldr x19, [sp,#16]\n\t" /* restore register from stack */
"ldp x29, x30, [sp],#32\n\t" /* restore return address */
"ret") /* return */
#endif
/***********************************************************************
* wine_switch_to_stack
*
* Switch to the specified stack and call the function.
*/
void DECLSPEC_NORETURN wine_switch_to_stack_obsolete( void (*func)(void *), void *arg, void *stack )
{
wine_call_on_stack_obsolete( (int (*)(void *))func, arg, stack );
abort();
}
__ASM_OBSOLETE(wine_pthread_get_functions);
__ASM_OBSOLETE(wine_pthread_set_functions);
__ASM_OBSOLETE(wine_call_on_stack);
__ASM_OBSOLETE(wine_switch_to_stack);
#endif /* __ASM_OBSOLETE */