/* * Support functions for Wine exception handling * * Copyright (c) 1999, 2010 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 #include "winternl.h" #include "wine/exception.h" #include "wine/asm.h" #if defined(__GNUC__) && defined(__i386__) __ASM_GLOBAL_FUNC( __wine_setjmpex, "movl 4(%esp),%ecx\n\t" /* jmp_buf */ "movl %ebp,0(%ecx)\n\t" /* jmp_buf.Ebp */ "movl %ebx,4(%ecx)\n\t" /* jmp_buf.Ebx */ "movl %edi,8(%ecx)\n\t" /* jmp_buf.Edi */ "movl %esi,12(%ecx)\n\t" /* jmp_buf.Esi */ "movl %esp,16(%ecx)\n\t" /* jmp_buf.Esp */ "movl 0(%esp),%eax\n\t" "movl %eax,20(%ecx)\n\t" /* jmp_buf.Eip */ "xorl %eax,%eax\n\t" "ret" ) __ASM_GLOBAL_FUNC( __wine_longjmp, "movl 4(%esp),%ecx\n\t" /* jmp_buf */ "movl 8(%esp),%eax\n\t" /* retval */ "movl 0(%ecx),%ebp\n\t" /* jmp_buf.Ebp */ "movl 4(%ecx),%ebx\n\t" /* jmp_buf.Ebx */ "movl 8(%ecx),%edi\n\t" /* jmp_buf.Edi */ "movl 12(%ecx),%esi\n\t" /* jmp_buf.Esi */ "movl 16(%ecx),%esp\n\t" /* jmp_buf.Esp */ "addl $4,%esp\n\t" /* get rid of return address */ "jmp *20(%ecx)\n\t" /* jmp_buf.Eip */ ) __ASM_GLOBAL_FUNC( __wine_rtl_unwind, "pushl %ebp\n\t" __ASM_CFI(".cfi_adjust_cfa_offset 4\n\t") __ASM_CFI(".cfi_rel_offset %ebp,0\n\t") "movl %esp,%ebp\n\t" __ASM_CFI(".cfi_def_cfa_register %ebp\n\t") "subl $8,%esp\n\t" "pushl $0\n\t" /* retval */ "pushl 12(%ebp)\n\t" /* record */ "pushl 16(%ebp)\n\t" /* target */ "pushl 8(%ebp)\n\t" /* frame */ "call " __ASM_STDCALL("RtlUnwind",16) "\n\t" "call *16(%ebp)" ) #elif defined(__GNUC__) && defined(__x86_64__) __ASM_GLOBAL_FUNC( __wine_setjmpex, "movq %rdx,(%rcx)\n\t" /* jmp_buf->Frame */ "movq %rbx,0x8(%rcx)\n\t" /* jmp_buf->Rbx */ "leaq 0x8(%rsp),%rax\n\t" "movq %rax,0x10(%rcx)\n\t" /* jmp_buf->Rsp */ "movq %rbp,0x18(%rcx)\n\t" /* jmp_buf->Rbp */ "movq %rsi,0x20(%rcx)\n\t" /* jmp_buf->Rsi */ "movq %rdi,0x28(%rcx)\n\t" /* jmp_buf->Rdi */ "movq %r12,0x30(%rcx)\n\t" /* jmp_buf->R12 */ "movq %r13,0x38(%rcx)\n\t" /* jmp_buf->R13 */ "movq %r14,0x40(%rcx)\n\t" /* jmp_buf->R14 */ "movq %r15,0x48(%rcx)\n\t" /* jmp_buf->R15 */ "movq (%rsp),%rax\n\t" "movq %rax,0x50(%rcx)\n\t" /* jmp_buf->Rip */ "movdqa %xmm6,0x60(%rcx)\n\t" /* jmp_buf->Xmm6 */ "movdqa %xmm7,0x70(%rcx)\n\t" /* jmp_buf->Xmm7 */ "movdqa %xmm8,0x80(%rcx)\n\t" /* jmp_buf->Xmm8 */ "movdqa %xmm9,0x90(%rcx)\n\t" /* jmp_buf->Xmm9 */ "movdqa %xmm10,0xa0(%rcx)\n\t" /* jmp_buf->Xmm10 */ "movdqa %xmm11,0xb0(%rcx)\n\t" /* jmp_buf->Xmm11 */ "movdqa %xmm12,0xc0(%rcx)\n\t" /* jmp_buf->Xmm12 */ "movdqa %xmm13,0xd0(%rcx)\n\t" /* jmp_buf->Xmm13 */ "movdqa %xmm14,0xe0(%rcx)\n\t" /* jmp_buf->Xmm14 */ "movdqa %xmm15,0xf0(%rcx)\n\t" /* jmp_buf->Xmm15 */ "xorq %rax,%rax\n\t" "retq" ) __ASM_GLOBAL_FUNC( __wine_longjmp, "movq %rdx,%rax\n\t" /* retval */ "movq 0x8(%rcx),%rbx\n\t" /* jmp_buf->Rbx */ "movq 0x18(%rcx),%rbp\n\t" /* jmp_buf->Rbp */ "movq 0x20(%rcx),%rsi\n\t" /* jmp_buf->Rsi */ "movq 0x28(%rcx),%rdi\n\t" /* jmp_buf->Rdi */ "movq 0x30(%rcx),%r12\n\t" /* jmp_buf->R12 */ "movq 0x38(%rcx),%r13\n\t" /* jmp_buf->R13 */ "movq 0x40(%rcx),%r14\n\t" /* jmp_buf->R14 */ "movq 0x48(%rcx),%r15\n\t" /* jmp_buf->R15 */ "movdqa 0x60(%rcx),%xmm6\n\t" /* jmp_buf->Xmm6 */ "movdqa 0x70(%rcx),%xmm7\n\t" /* jmp_buf->Xmm7 */ "movdqa 0x80(%rcx),%xmm8\n\t" /* jmp_buf->Xmm8 */ "movdqa 0x90(%rcx),%xmm9\n\t" /* jmp_buf->Xmm9 */ "movdqa 0xa0(%rcx),%xmm10\n\t" /* jmp_buf->Xmm10 */ "movdqa 0xb0(%rcx),%xmm11\n\t" /* jmp_buf->Xmm11 */ "movdqa 0xc0(%rcx),%xmm12\n\t" /* jmp_buf->Xmm12 */ "movdqa 0xd0(%rcx),%xmm13\n\t" /* jmp_buf->Xmm13 */ "movdqa 0xe0(%rcx),%xmm14\n\t" /* jmp_buf->Xmm14 */ "movdqa 0xf0(%rcx),%xmm15\n\t" /* jmp_buf->Xmm15 */ "movq 0x50(%rcx),%rdx\n\t" /* jmp_buf->Rip */ "movq 0x10(%rcx),%rsp\n\t" /* jmp_buf->Rsp */ "jmp *%rdx" ) __ASM_GLOBAL_FUNC( __wine_rtl_unwind, "pushq %rbp\n\t" __ASM_SEH(".seh_pushreg %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_SEH(".seh_setframe %rbp,0\n\t") __ASM_CFI(".cfi_def_cfa_register %rbp\n\t") "subq $0x20,%rsp\n\t" __ASM_SEH(".seh_stackalloc 0x20\n\t") __ASM_SEH(".seh_endprologue\n\t") "movq %r8,%r9\n\t" /* retval = final target */ "movq %rdx,%r8\n\t" /* record */ "leaq __wine_unwind_trampoline(%rip),%rdx\n\t" /* target = trampoline */ "call " __ASM_NAME("RtlUnwind") "\n" "__wine_unwind_trampoline:\n\t" /* we need an extra call to make sure the stack is correctly aligned */ "callq *%rax" ) #elif defined(__GNUC__) && defined(__arm__) __ASM_GLOBAL_FUNC( __wine_setjmpex, "str r1, [r0]\n\t" /* jmp_buf->Frame */ "str r4, [r0, #0x4]\n\t" /* jmp_buf->R4 */ "str r5, [r0, #0x8]\n\t" /* jmp_buf->R5 */ "str r6, [r0, #0xc]\n\t" /* jmp_buf->R6 */ "str r7, [r0, #0x10]\n\t" /* jmp_buf->R7 */ "str r8, [r0, #0x14]\n\t" /* jmp_buf->R8 */ "str r9, [r0, #0x18]\n\t" /* jmp_buf->R9 */ "str r10, [r0, #0x1c]\n\t" /* jmp_buf->R10 */ "str r11, [r0, #0x20]\n\t" /* jmp_buf->R11 */ "str sp, [r0, #0x24]\n\t" /* jmp_buf->Sp */ "str lr, [r0, #0x28]\n\t" /* jmp_buf->Pc */ #ifndef __SOFTFP__ "vmrs r2, fpscr\n\t" "str r2, [r0, #0x2c]\n\t" /* jmp_buf->Fpscr */ "vstr d8, [r0, #0x30]\n\t" /* jmp_buf->D[0] */ "vstr d9, [r0, #0x38]\n\t" /* jmp_buf->D[1] */ "vstr d10, [r0, #0x40]\n\t" /* jmp_buf->D[2] */ "vstr d11, [r0, #0x48]\n\t" /* jmp_buf->D[3] */ "vstr d12, [r0, #0x50]\n\t" /* jmp_buf->D[4] */ "vstr d13, [r0, #0x58]\n\t" /* jmp_buf->D[5] */ "vstr d14, [r0, #0x60]\n\t" /* jmp_buf->D[6] */ "vstr d15, [r0, #0x68]\n\t" /* jmp_buf->D[7] */ #endif "mov r0, #0\n\t" "bx lr" ) __ASM_GLOBAL_FUNC( __wine_longjmp, "ldr r4, [r0, #0x4]\n\t" /* jmp_buf->R4 */ "ldr r5, [r0, #0x8]\n\t" /* jmp_buf->R5 */ "ldr r6, [r0, #0xc]\n\t" /* jmp_buf->R6 */ "ldr r7, [r0, #0x10]\n\t" /* jmp_buf->R7 */ "ldr r8, [r0, #0x14]\n\t" /* jmp_buf->R8 */ "ldr r9, [r0, #0x18]\n\t" /* jmp_buf->R9 */ "ldr r10, [r0, #0x1c]\n\t" /* jmp_buf->R10 */ "ldr r11, [r0, #0x20]\n\t" /* jmp_buf->R11 */ "ldr sp, [r0, #0x24]\n\t" /* jmp_buf->Sp */ "ldr r2, [r0, #0x28]\n\t" /* jmp_buf->Pc */ #ifndef __SOFTFP__ "ldr r3, [r0, #0x2c]\n\t" /* jmp_buf->Fpscr */ "vmsr fpscr, r3\n\t" "vldr d8, [r0, #0x30]\n\t" /* jmp_buf->D[0] */ "vldr d9, [r0, #0x38]\n\t" /* jmp_buf->D[1] */ "vldr d10, [r0, #0x40]\n\t" /* jmp_buf->D[2] */ "vldr d11, [r0, #0x48]\n\t" /* jmp_buf->D[3] */ "vldr d12, [r0, #0x50]\n\t" /* jmp_buf->D[4] */ "vldr d13, [r0, #0x58]\n\t" /* jmp_buf->D[5] */ "vldr d14, [r0, #0x60]\n\t" /* jmp_buf->D[6] */ "vldr d15, [r0, #0x68]\n\t" /* jmp_buf->D[7] */ #endif "mov r0, r1\n\t" /* retval */ "bx r2" ) void __cdecl __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record, void (*target)(void) ) { RtlUnwind( frame, target, record, 0 ); for (;;) target(); } #elif defined(__GNUC__) && defined(__aarch64__) __ASM_GLOBAL_FUNC( __wine_setjmpex, "str x1, [x0]\n\t" /* jmp_buf->Frame */ "stp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */ "stp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */ "stp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */ "stp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */ "stp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */ "stp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */ "mov x2, sp\n\t" "str x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ "mrs x2, fpcr\n\t" "str w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ "mrs x2, fpsr\n\t" "str w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ "stp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */ "stp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */ "stp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */ "stp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */ "mov x0, #0\n\t" "ret" ) __ASM_GLOBAL_FUNC( __wine_longjmp, "ldp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */ "ldp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */ "ldp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */ "ldp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */ "ldp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */ "ldp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */ "ldr x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ "mov sp, x2\n\t" "ldr w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ "msr fpcr, x2\n\t" "ldr w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ "msr fpsr, x2\n\t" "ldp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */ "ldp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */ "ldp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */ "ldp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */ "mov x0, x1\n\t" /* retval */ "ret" ) void __cdecl __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record, void (*target)(void) ) { RtlUnwind( frame, target, record, 0 ); for (;;) target(); } #else int __cdecl __wine_setjmpex( __wine_jmp_buf *buf, EXCEPTION_REGISTRATION_RECORD *frame ) { return setjmp( buf ); } void __cdecl __wine_longjmp( __wine_jmp_buf *buf, int retval ) { for (;;) longjmp( buf, retval ); } void __cdecl __wine_rtl_unwind( EXCEPTION_REGISTRATION_RECORD* frame, EXCEPTION_RECORD *record, void (*target)(void) ) { RtlUnwind( frame, target, record, 0 ); for (;;) target(); } #endif static void DECLSPEC_NORETURN unwind_target(void) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)__wine_get_frame(); __wine_pop_frame( &wine_frame->frame ); for (;;) __wine_longjmp( &wine_frame->jmp, 1 ); } static void DECLSPEC_NORETURN unwind_frame( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame ) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame; /* hack to make GetExceptionCode() work in handler */ wine_frame->ExceptionCode = record->ExceptionCode; wine_frame->ExceptionRecord = wine_frame; __wine_rtl_unwind( frame, record, unwind_target ); } DWORD __cdecl __wine_exception_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame; EXCEPTION_POINTERS ptrs; if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND | EH_NESTED_CALL)) return ExceptionContinueSearch; ptrs.ExceptionRecord = record; ptrs.ContextRecord = context; switch(wine_frame->u.filter( &ptrs )) { case EXCEPTION_CONTINUE_SEARCH: return ExceptionContinueSearch; case EXCEPTION_CONTINUE_EXECUTION: return ExceptionContinueExecution; case EXCEPTION_EXECUTE_HANDLER: break; } unwind_frame( record, frame ); } DWORD __cdecl __wine_exception_ctx_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame; EXCEPTION_POINTERS ptrs; if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND | EH_NESTED_CALL)) return ExceptionContinueSearch; ptrs.ExceptionRecord = record; ptrs.ContextRecord = context; switch(wine_frame->u.filter_ctx( &ptrs, wine_frame->ctx )) { case EXCEPTION_CONTINUE_SEARCH: return ExceptionContinueSearch; case EXCEPTION_CONTINUE_EXECUTION: return ExceptionContinueExecution; case EXCEPTION_EXECUTE_HANDLER: break; } unwind_frame( record, frame ); } DWORD __cdecl __wine_exception_handler_page_fault( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND | EH_NESTED_CALL)) return ExceptionContinueSearch; if (record->ExceptionCode != STATUS_ACCESS_VIOLATION) return ExceptionContinueSearch; unwind_frame( record, frame ); } DWORD __cdecl __wine_exception_handler_all( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND | EH_NESTED_CALL)) return ExceptionContinueSearch; unwind_frame( record, frame ); } DWORD __cdecl __wine_finally_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame; wine_frame->u.finally_func( FALSE ); } return ExceptionContinueSearch; } DWORD __cdecl __wine_finally_ctx_handler( EXCEPTION_RECORD *record, EXCEPTION_REGISTRATION_RECORD *frame, CONTEXT *context, EXCEPTION_REGISTRATION_RECORD **pdispatcher ) { if (record->ExceptionFlags & (EH_UNWINDING | EH_EXIT_UNWIND)) { __WINE_FRAME *wine_frame = (__WINE_FRAME *)frame; wine_frame->u.finally_func_ctx( FALSE, wine_frame->ctx ); } return ExceptionContinueSearch; }