turnidge@google.com
0ddd4c04e9
This change hopefully takes care of the non-mac build issues. The checked mode failures are fixed in a separate cl. Review URL: https://chromiumcodereview.appspot.com//9316071 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@3863 260f80e4-7a28-3924-810f-c04153c831b5
132 lines
3.7 KiB
C++
132 lines
3.7 KiB
C++
// Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "vm/globals.h"
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#if defined(TARGET_ARCH_IA32)
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#include "vm/cpu.h"
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#include "vm/constants_ia32.h"
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#include "vm/heap.h"
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#include "vm/isolate.h"
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#include "vm/object.h"
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namespace dart {
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void CPU::FlushICache(uword start, uword size) {
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// Nothing to be done here.
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}
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void CPU::JumpToExceptionHandler(uword program_counter,
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uword stack_pointer,
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uword frame_pointer,
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const Instance& exception_object,
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const Instance& stacktrace_object) {
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// The no_gc StackResource is unwound through the tear down of
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// stack resources below.
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NoGCScope no_gc;
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RawInstance* exception = exception_object.raw();
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RawInstance* stacktrace = stacktrace_object.raw();
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// Prepare for unwinding frames by destroying all the stack resources
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// in the previous frames.
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Isolate* isolate = Isolate::Current();
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while (isolate->top_resource() != NULL &&
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(reinterpret_cast<uword>(isolate->top_resource()) < stack_pointer)) {
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isolate->top_resource()->~StackResource();
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}
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// Set up the appropriate register state and jump to the handler.
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ASSERT(kExceptionObjectReg == EAX);
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ASSERT(kStackTraceObjectReg == EDX);
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#if defined(TARGET_OS_WINDOWS)
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__asm {
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mov eax, exception
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mov edx, stacktrace
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mov ebx, program_counter
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mov ecx, frame_pointer
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mov edi, stack_pointer
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mov ebp, ecx
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mov esp, edi
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jmp ebx
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}
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#else
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asm volatile("mov %[exception], %%eax;"
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"mov %[stacktrace], %%edx;"
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"mov %[pc], %%ebx;"
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"mov %[fp], %%ecx;"
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"mov %[sp], %%edi;"
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"mov %%ecx, %%ebp;"
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"mov %%edi, %%esp;"
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"jmp *%%ebx;"
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:
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: [exception] "m" (exception),
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[stacktrace] "m" (stacktrace),
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[pc] "m" (program_counter),
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[sp] "m" (stack_pointer),
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[fp] "m" (frame_pointer));
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#endif
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UNREACHABLE();
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}
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void CPU::JumpToErrorHandler(
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uword program_counter,
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uword stack_pointer,
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uword frame_pointer,
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const Error& error) {
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// The no_gc StackResource is unwound through the tear down of
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// stack resources below.
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NoGCScope no_gc;
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ASSERT(!error.IsNull());
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RawError* raw_error = error.raw();
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// Prepare for unwinding frames by destroying all the stack resources
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// in the previous frames.
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Isolate* isolate = Isolate::Current();
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while (isolate->top_resource() != NULL &&
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(reinterpret_cast<uword>(isolate->top_resource()) < stack_pointer)) {
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isolate->top_resource()->~StackResource();
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}
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// Set up the error object as the return value in EAX and continue
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// from the invocation stub.
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#if defined(TARGET_OS_WINDOWS)
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__asm {
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mov eax, raw_error
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mov ebx, program_counter
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mov ecx, frame_pointer
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mov edi, stack_pointer
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mov ebp, ecx
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mov esp, edi
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jmp ebx
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}
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#else
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asm volatile("mov %[raw_error], %%eax;"
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"mov %[pc], %%ebx;"
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"mov %[fp], %%ecx;"
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"mov %[sp], %%edi;"
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"mov %%ecx, %%ebp;"
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"mov %%edi, %%esp;"
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"jmp *%%ebx;"
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:
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: [raw_error] "m" (raw_error),
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[pc] "m" (program_counter),
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[sp] "m" (stack_pointer),
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[fp] "m" (frame_pointer));
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#endif
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UNREACHABLE();
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}
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const char* CPU::Id() {
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return "ia32";
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}
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} // namespace dart
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#endif // defined TARGET_ARCH_IA32
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