Index: runtime/vm/code_patcher_x64.cc |
=================================================================== |
--- runtime/vm/code_patcher_x64.cc (revision 16874) |
+++ runtime/vm/code_patcher_x64.cc (working copy) |
@@ -144,69 +144,6 @@ |
} |
-static void SwapCode(intptr_t num_bytes, char* a, char* b) { |
- for (intptr_t i = 0; i < num_bytes; i++) { |
- char tmp = *a; |
- *a = *b; |
- *b = tmp; |
- a++; |
- b++; |
- } |
-} |
- |
- |
-// The patch code buffer contains the jump code sequence which will be inserted |
-// at entry point. |
-void CodePatcher::PatchEntry(const Code& code) { |
- JumpPattern jmp_entry(code.EntryPoint()); |
- ASSERT(!jmp_entry.IsValid()); |
- const uword patch_buffer = code.GetPatchCodePc(); |
- ASSERT(patch_buffer != 0); |
- JumpPattern jmp_patch(patch_buffer); |
- ASSERT(jmp_patch.IsValid()); |
- const uword jump_target = jmp_patch.TargetAddress(); |
- SwapCode(jmp_patch.pattern_length_in_bytes(), |
- reinterpret_cast<char*>(code.EntryPoint()), |
- reinterpret_cast<char*>(patch_buffer)); |
- jmp_entry.SetTargetAddress(jump_target); |
-} |
- |
- |
-// The entry point is a jump code sequence, the patch code buffer contains |
-// original code, the entry point contains the jump code sequence. |
-void CodePatcher::RestoreEntry(const Code& code) { |
- JumpPattern jmp_entry(code.EntryPoint()); |
- ASSERT(jmp_entry.IsValid()); |
- const uword jump_target = jmp_entry.TargetAddress(); |
- const uword patch_buffer = code.GetPatchCodePc(); |
- ASSERT(patch_buffer != 0); |
- // 'patch_buffer' contains original entry code. |
- JumpPattern jmp_patch(patch_buffer); |
- ASSERT(!jmp_patch.IsValid()); |
- SwapCode(jmp_patch.pattern_length_in_bytes(), |
- reinterpret_cast<char*>(code.EntryPoint()), |
- reinterpret_cast<char*>(patch_buffer)); |
- ASSERT(jmp_patch.IsValid()); |
- jmp_patch.SetTargetAddress(jump_target); |
-} |
- |
- |
-bool CodePatcher::CodeIsPatchable(const Code& code) { |
- JumpPattern jmp_entry(code.EntryPoint()); |
- if (code.Size() < (jmp_entry.pattern_length_in_bytes() * 2)) { |
- return false; |
- } |
- uword limit = code.EntryPoint() + jmp_entry.pattern_length_in_bytes(); |
- for (intptr_t i = 0; i < code.pointer_offsets_length(); i++) { |
- const uword addr = code.GetPointerOffsetAt(i) + code.EntryPoint(); |
- if (addr < limit) { |
- return false; |
- } |
- } |
- return true; |
-} |
- |
- |
bool CodePatcher::IsDartCall(uword return_address) { |
return DartCallPattern::IsValid(return_address); |
} |