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60 lines
1.6 KiB
C++
60 lines
1.6 KiB
C++
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#include "platform_macro.h"
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#if defined(TARGET_ARCH_ARM)
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#include "core/modules/assembler/assembler-arm.h"
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#include "core/modules/codegen/codegen-arm.h"
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#include "InstructionRelocation/arm/ARMInstructionRelocation.h"
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#include "MemoryAllocator/NearMemoryArena.h"
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#include "InterceptRouting/RoutingPlugin/RoutingPlugin.h"
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using namespace zz::arm;
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static CodeBufferBase *generate_arm_trampoline(addr32_t from, addr32_t to) {
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TurboAssembler turbo_assembler_((void *)from);
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#define _ turbo_assembler_.
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CodeGen codegen(&turbo_assembler_);
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codegen.LiteralLdrBranch(to);
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return turbo_assembler_.GetCodeBuffer()->Copy();
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}
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CodeBufferBase *generate_thumb_trampoline(addr32_t from, addr32_t to) {
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ThumbTurboAssembler thumb_turbo_assembler_((void *)from);
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#undef _
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#define _ thumb_turbo_assembler_.
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_ AlignThumbNop();
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_ t2_ldr(pc, MemOperand(pc, 0));
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_ EmitAddress(to);
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return thumb_turbo_assembler_.GetCodeBuffer()->Copy();
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}
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CodeBufferBase *GenerateNormalTrampolineBuffer(addr_t from, addr_t to) {
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enum ExecuteState { ARMExecuteState, ThumbExecuteState };
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// set instruction running state
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ExecuteState execute_state_;
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execute_state_ = ARMExecuteState;
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if ((addr_t)from % 2) {
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execute_state_ = ThumbExecuteState;
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}
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if (execute_state_ == ARMExecuteState) {
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return generate_arm_trampoline(from, to);
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} else {
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// Check if needed pc align, (relative pc instructions needed 4 align)
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from = ALIGN(from, 2);
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return generate_thumb_trampoline(from, to);
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}
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return NULL;
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}
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CodeBufferBase *GenerateNearTrampolineBuffer(InterceptRouting *routing, addr_t src, addr_t dst) {
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return NULL;
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}
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#endif
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