mirror of
https://github.com/geode-sdk/geode.git
synced 2024-12-20 21:02:26 -05:00
60 lines
No EOL
1.6 KiB
C++
60 lines
No EOL
1.6 KiB
C++
#include "platform_macro.h"
|
|
#if defined(TARGET_ARCH_ARM)
|
|
|
|
#include "core/modules/assembler/assembler-arm.h"
|
|
#include "core/modules/codegen/codegen-arm.h"
|
|
|
|
#include "InstructionRelocation/arm/ARMInstructionRelocation.h"
|
|
|
|
#include "MemoryAllocator/NearMemoryArena.h"
|
|
#include "InterceptRouting/RoutingPlugin/RoutingPlugin.h"
|
|
|
|
using namespace zz::arm;
|
|
|
|
static CodeBufferBase *generate_arm_trampoline(addr32_t from, addr32_t to) {
|
|
TurboAssembler turbo_assembler_((void *)from);
|
|
#define _ turbo_assembler_.
|
|
|
|
CodeGen codegen(&turbo_assembler_);
|
|
codegen.LiteralLdrBranch(to);
|
|
|
|
return turbo_assembler_.GetCodeBuffer()->Copy();
|
|
}
|
|
|
|
CodeBufferBase *generate_thumb_trampoline(addr32_t from, addr32_t to) {
|
|
ThumbTurboAssembler thumb_turbo_assembler_((void *)from);
|
|
#undef _
|
|
#define _ thumb_turbo_assembler_.
|
|
|
|
_ AlignThumbNop();
|
|
_ t2_ldr(pc, MemOperand(pc, 0));
|
|
_ EmitAddress(to);
|
|
|
|
return thumb_turbo_assembler_.GetCodeBuffer()->Copy();
|
|
}
|
|
|
|
CodeBufferBase *GenerateNormalTrampolineBuffer(addr_t from, addr_t to) {
|
|
enum ExecuteState { ARMExecuteState, ThumbExecuteState };
|
|
|
|
// set instruction running state
|
|
ExecuteState execute_state_;
|
|
execute_state_ = ARMExecuteState;
|
|
if ((addr_t)from % 2) {
|
|
execute_state_ = ThumbExecuteState;
|
|
}
|
|
|
|
if (execute_state_ == ARMExecuteState) {
|
|
return generate_arm_trampoline(from, to);
|
|
} else {
|
|
// Check if needed pc align, (relative pc instructions needed 4 align)
|
|
from = ALIGN(from, 2);
|
|
return generate_thumb_trampoline(from, to);
|
|
}
|
|
return NULL;
|
|
}
|
|
|
|
CodeBufferBase *GenerateNearTrampolineBuffer(InterceptRouting *routing, addr_t src, addr_t dst) {
|
|
return NULL;
|
|
}
|
|
|
|
#endif |