llvm passes act
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@ -99,16 +99,11 @@ protected:
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std::tuple<continuation_e, BasicBlock *> gen_single_inst_behavior(virt_addr_t &, unsigned int &, BasicBlock *) override;
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void gen_leave_behavior(BasicBlock *leave_blk) override;
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void gen_raise_trap(uint16_t trap_id, uint16_t cause);
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void gen_leave_trap(unsigned lvl);
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void gen_wait(unsigned type);
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void gen_trap_behavior(BasicBlock *) override;
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void gen_trap_check(BasicBlock *bb);
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void gen_instr_epilogue(BasicBlock *bb);
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inline Value *gen_reg_load(unsigned i, unsigned level = 0) {
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return this->builder.CreateLoad(this->get_typeptr(i), get_reg_ptr(i), false);
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@ -162,20 +157,22 @@ private:
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/* instruction definitions */<%instructions.eachWithIndex{instr, idx -> %>
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/* instruction ${idx}: ${instr.name} */
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std::tuple<continuation_e, BasicBlock*> __${generator.functionName(instr.name)}(virt_addr_t& pc, code_word_t instr, BasicBlock* bb){
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bb->setName(fmt::format("${instr.name}_0x{:X}",pc.val));
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this->gen_sync(PRE_SYNC,${idx});
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uint64_t PC = pc.val;
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<%instr.fields.eachLine{%>${it}
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<%}%>if(this->disass_enabled){
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/* generate console output when executing the command */<%instr.disass.eachLine{%>
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${it}<%}%>
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}
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bb->setName(fmt::format("${instr.name}_0x{:X}",pc.val));
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this->gen_sync(PRE_SYNC,${idx});
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auto cur_pc_val = this->gen_const(32,pc.val);
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pc=pc+ ${instr.length/8};
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this->gen_set_pc(pc, traits::NEXT_PC);
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/*generate behavior*/
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<%instr.behavior.eachLine{%>${it}
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<%}%>
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this->gen_trap_check(bb);
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this->gen_instr_epilogue(bb);
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this->gen_sync(POST_SYNC, ${idx});
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this->builder.CreateBr(bb);
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return returnValue;
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@ -195,7 +192,7 @@ private:
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pc = pc + ((instr & 3) == 3 ? 4 : 2);
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this->gen_raise_trap(0, 2); // illegal instruction trap
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this->gen_sync(iss::POST_SYNC, instr_descr.size());
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this->gen_trap_check(this->leave_blk);
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this->gen_instr_epilogue(this->leave_blk);
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return std::make_tuple(BRANCH, nullptr);
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}
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//decoding functionality
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@ -301,18 +298,21 @@ vm_impl<ARCH>::gen_single_inst_behavior(virt_addr_t &pc, unsigned int &inst_cnt,
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return (this->*f)(pc, instr, this_block);
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}
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template <typename ARCH> void vm_impl<ARCH>::gen_leave_behavior(BasicBlock *leave_blk) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_leave_behavior(BasicBlock *leave_blk) {
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this->builder.SetInsertPoint(leave_blk);
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this->builder.CreateRet(this->builder.CreateLoad(this->get_typeptr(traits::NEXT_PC),get_reg_ptr(traits::NEXT_PC), false));
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}
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template <typename ARCH> void vm_impl<ARCH>::gen_raise_trap(uint16_t trap_id, uint16_t cause) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_raise_trap(uint16_t trap_id, uint16_t cause) {
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auto *TRAP_val = this->gen_const(32, 0x80 << 24 | (cause << 16) | trap_id);
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this->builder.CreateStore(TRAP_val, get_reg_ptr(traits::TRAP_STATE), true);
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this->builder.CreateStore(this->gen_const(32U, std::numeric_limits<uint32_t>::max()), get_reg_ptr(traits::LAST_BRANCH), false);
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}
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template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(unsigned lvl) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_leave_trap(unsigned lvl) {
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std::vector<Value *> args{ this->core_ptr, ConstantInt::get(getContext(), APInt(64, lvl)) };
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this->builder.CreateCall(this->mod->getFunction("leave_trap"), args);
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auto *PC_val = this->gen_read_mem(traits::CSR, (lvl << 8) + 0x41, traits::XLEN / 8);
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@ -320,12 +320,14 @@ template <typename ARCH> void vm_impl<ARCH>::gen_leave_trap(unsigned lvl) {
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this->builder.CreateStore(this->gen_const(32U, std::numeric_limits<uint32_t>::max()), get_reg_ptr(traits::LAST_BRANCH), false);
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}
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template <typename ARCH> void vm_impl<ARCH>::gen_wait(unsigned type) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_wait(unsigned type) {
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std::vector<Value *> args{ this->core_ptr, ConstantInt::get(getContext(), APInt(64, type)) };
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this->builder.CreateCall(this->mod->getFunction("wait"), args);
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}
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template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(BasicBlock *trap_blk) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_trap_behavior(BasicBlock *trap_blk) {
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this->builder.SetInsertPoint(trap_blk);
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this->gen_sync(POST_SYNC, -1); //TODO get right InstrId
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auto *trap_state_val = this->builder.CreateLoad(this->get_typeptr(traits::TRAP_STATE), get_reg_ptr(traits::TRAP_STATE), true);
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@ -338,7 +340,8 @@ template <typename ARCH> void vm_impl<ARCH>::gen_trap_behavior(BasicBlock *trap_
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this->builder.CreateRet(trap_addr_val);
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}
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template <typename ARCH> inline void vm_impl<ARCH>::gen_trap_check(BasicBlock *bb) {
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template <typename ARCH>
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void vm_impl<ARCH>::gen_instr_epilogue(BasicBlock *bb) {
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auto* target_bb = BasicBlock::Create(this->mod->getContext(), "", this->func, bb);
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auto *v = this->builder.CreateLoad(this->get_typeptr(traits::TRAP_STATE), get_reg_ptr(traits::TRAP_STATE), true);
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this->gen_cond_branch(this->builder.CreateICmp(
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