Index: runtime/vm/debugger_ia32.cc |
=================================================================== |
--- runtime/vm/debugger_ia32.cc (revision 4191) |
+++ runtime/vm/debugger_ia32.cc (working copy) |
@@ -8,6 +8,8 @@ |
#include "vm/debugger.h" |
#include "vm/code_patcher.h" |
+#include "vm/cpu.h" |
+#include "vm/disassembler.h" |
#include "vm/object.h" |
#include "vm/os.h" |
#include "vm/stack_frame.h" |
@@ -22,6 +24,45 @@ |
*reinterpret_cast<uword*>(var_address)); |
regis
2012/02/24 23:32:37
strange indentation
hausner
2012/02/27 22:03:57
Done.
|
} |
+ |
+RawInstance* ActivationFrame::GetInstanceCallReceiver( |
+ intptr_t num_actual_args) { |
regis
2012/02/24 23:32:37
strange indentation
hausner
2012/02/27 22:03:57
4 character indent from the function name is stran
|
+ ASSERT(num_actual_args > 0); // At minimum we have a receiver on the stack. |
+ // Stack pointer points to last argument that was pushed on the stack. |
+ uword receiver_addr = sp() + ((num_actual_args - 1) * kWordSize); |
+ return reinterpret_cast<RawInstance*>( |
+ *reinterpret_cast<uword*>(receiver_addr)); |
regis
2012/02/24 23:32:37
ditto
hausner
2012/02/27 22:03:57
Done.
|
+} |
+ |
+ |
+void Breakpoint::PatchFunctionReturn() { |
+ uint8_t* code = reinterpret_cast<uint8_t*>(pc_ - 5); |
+ ASSERT((code[0] == 0x89) && (code[1] == 0xEC)); // mov esp,ebp |
+ ASSERT(code[2] == 0x5D); // pop ebp |
+ ASSERT(code[3] == 0xC3); // ret |
+ ASSERT(code[4] == 0x90); // nop |
+ |
+ // Smash code with call instruction and relative target address. |
+ uword stub_addr = StubCode::BreakpointReturnEntryPoint(); |
+ code[0] = 0xE8; |
+ *reinterpret_cast<uword*>(&code[1]) = stub_addr - pc_; |
+ CPU::FlushICache(pc_, 5); |
+} |
+ |
+ |
+void Breakpoint::RestoreFunctionReturn() { |
+ uint8_t* code = reinterpret_cast<uint8_t*>(pc_ - 5); |
+ ASSERT(code[0] == 0xE8); |
+ code[0] = 0x89; |
+ code[1] = 0xEC; // mov esp,ebp |
+ code[2] = 0x5D; // pop ebp |
+ code[3] = 0xC3; // ret |
+ code[4] = 0x90; // nop |
+ CPU::FlushICache(pc_, 5); |
+} |
+ |
+ |
+ |
} // namespace dart |
#endif // defined TARGET_ARCH_IA32 |