/* * 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 #include #include #include "wine/library.h" /* 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( 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( const struct wine_pthread_functions *functions, size_t size ) { memcpy( &pthread_functions, functions, min( size, sizeof(pthread_functions) )); } /*********************************************************************** * wine_switch_to_stack * * Switch to the specified stack and call the function. */ void DECLSPEC_NORETURN wine_switch_to_stack( void (*func)(void *), void *arg, void *stack ) { wine_call_on_stack( (int (*)(void *))func, arg, stack ); abort(); } /*********************************************************************** * wine_call_on_stack * * Switch to the specified stack to call the function and return. */ #if defined(__i386__) && defined(__GNUC__) __ASM_GLOBAL_FUNC( wine_call_on_stack, "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(__i386__) && defined(_MSC_VER) __declspec(naked) int wine_call_on_stack( int (*func)(void *), void *arg, void *stack ) { __asm push ebp; __asm push esi; __asm mov ecx, 12[esp]; __asm mov edx, 16[esp]; __asm mov esi, 20[esp]; __asm xchg esp, esi; __asm push edx; __asm xor ebp, ebp; __asm call [ecx]; __asm mov esp, esi; __asm pop esi; __asm pop ebp __asm ret; } #elif defined(__x86_64__) && defined(__GNUC__) __ASM_GLOBAL_FUNC( wine_call_on_stack, "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(__powerpc__) && defined(__GNUC__) __ASM_GLOBAL_FUNC( wine_call_on_stack, "mflr 0\n\t" /* get return address */ "stw 0, 4(1)\n\t" /* save return address */ "subi 5, 5, 16\n\t" /* reserve space on new stack */ "stw 1, 12(5)\n\t" /* store old sp */ "mtctr 3\n\t" /* func -> ctr */ "mr 3,4\n\t" /* args -> function param 1 (r3) */ "mr 1,5\n\t" /* stack */ "li 0, 0\n\t" /* zero */ "stw 0, 0(1)\n\t" /* bottom of stack */ "stwu 1, -16(1)\n\t" /* create a frame for this function */ "bctrl\n\t" /* call ctr */ "lwz 1, 28(1)\n\t" /* fetch old sp */ "lwz 0, 4(1)\n\t" /* fetch return address */ "mtlr 0\n\t" /* return address -> lr */ "blr") /* return */ #elif defined(__arm__) && defined(__GNUC__) __ASM_GLOBAL_FUNC( wine_call_on_stack, "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 */ #if defined(__thumb__) "blx r2\n\t" /* call func */ #else "mov LR, PC\n\t" /* return after branch */ "mov PC, r2\n\t" /* call func */ #endif "mov sp, r4\n\t" /* restore old sp from local var */ "pop {r4,PC}") /* fetch return address into pc */ #elif defined(__sparc__) && defined(__GNUC__) __ASM_GLOBAL_FUNC( wine_call_on_stack, "save %sp, -96, %sp\n\t" /* push: change register window */ "mov %sp, %l2\n\t" /* store old sp in local var */ "mov %i0, %l0\n\t" /* func */ "mov %i1, %l1\n\t" /* arg */ "sub %i2, 96, %sp\n\t" /* stack */ "call %l0, 0\n\t" /* call func */ "mov %l1, %o0\n\t" /* delay slot: arg for func */ "mov %l2, %sp\n\t" /* restore old sp from local var */ "mov %o0, %i0\n\t" /* move return value to right register window */ "ret\n\t" /* return */ "restore\n\t") /* delay slot: pop */ #else #error You must implement wine_call_on_stack for your platform #endif