Fast cross-module relative jumps on Intel

ifratric · ifratric · commit 4d8e6ee24b62 · 2025-03-25T18:36:25.000+01:00
diff --git a/tinyinst.cpp b/tinyinst.cpp
@@ -496,10 +496,14 @@ void TinyInst::InvalidInstruction(ModuleInfo *module) {
 }
 
 void TinyInst::OutsideJump(ModuleInfo* module, size_t address) {
+#ifdef ARM64
   size_t breakpoint_address = (size_t)module->instrumented_code_remote +
     module->instrumented_code_allocated;
   assembler_->Breakpoint(module);
   module->outside_jumps[breakpoint_address] = address;
+#else
+  assembler_->JmpAddress(module, address);
+#endif
 }
 
 void TinyInst::InstrumentIndirect(ModuleInfo *module,

Original file line number	Diff line number	Diff line change
`@@ -496,10 +496,14 @@ void TinyInst::InvalidInstruction(ModuleInfo *module) {`
`496`	`496`	`}`
`497`	`497`
`498`	`498`	`void TinyInst::OutsideJump(ModuleInfo* module, size_t address) {`
	`499`	`+#ifdef ARM64`
`499`	`500`	`size_t breakpoint_address = (size_t)module->instrumented_code_remote +`
`500`	`501`	`module->instrumented_code_allocated;`
`501`	`502`	`assembler_->Breakpoint(module);`
`502`	`503`	`module->outside_jumps[breakpoint_address] = address;`
	`504`	`+#else`
	`505`	`+ assembler_->JmpAddress(module, address);`
	`506`	`+#endif`
`503`	`507`	`}`
`504`	`508`
`505`	`509`	`void TinyInst::InstrumentIndirect(ModuleInfo *module,`