121 lines
2.5 KiB
C++
121 lines
2.5 KiB
C++
/**
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******************************************************************************
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* Xenia : Xbox 360 Emulator Research Project *
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******************************************************************************
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* Copyright 2013 Ben Vanik. All rights reserved. *
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* Released under the BSD license - see LICENSE in the root for more details. *
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******************************************************************************
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*/
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#include "xenia/cpu/hir/instr.h"
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#include "xenia/cpu/hir/block.h"
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namespace xe {
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namespace cpu {
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namespace hir {
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void Instr::set_src1(Value* value) {
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if (src1.value == value) {
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return;
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}
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if (src1_use) {
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src1.value->RemoveUse(src1_use);
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}
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src1.value = value;
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src1_use = value ? value->AddUse(block->arena, this) : NULL;
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}
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void Instr::set_src2(Value* value) {
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if (src2.value == value) {
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return;
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}
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if (src2_use) {
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src2.value->RemoveUse(src2_use);
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}
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src2.value = value;
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src2_use = value ? value->AddUse(block->arena, this) : NULL;
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}
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void Instr::set_src3(Value* value) {
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if (src3.value == value) {
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return;
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}
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if (src3_use) {
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src3.value->RemoveUse(src3_use);
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}
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src3.value = value;
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src3_use = value ? value->AddUse(block->arena, this) : NULL;
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}
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void Instr::MoveBefore(Instr* other) {
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if (next == other) {
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return;
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}
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// Remove from current location.
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if (prev) {
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prev->next = next;
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} else {
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block->instr_head = next;
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}
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if (next) {
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next->prev = prev;
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} else {
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block->instr_tail = prev;
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}
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// Insert into new location.
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block = other->block;
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next = other;
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prev = other->prev;
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other->prev = this;
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if (prev) {
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prev->next = this;
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}
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if (other == block->instr_head) {
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block->instr_head = this;
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}
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}
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void Instr::Replace(const OpcodeInfo* opcode, uint16_t flags) {
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this->opcode = opcode;
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this->flags = flags;
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if (src1_use) {
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src1.value->RemoveUse(src1_use);
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src1.value = NULL;
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src1_use = NULL;
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}
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if (src2_use) {
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src2.value->RemoveUse(src2_use);
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src2.value = NULL;
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src2_use = NULL;
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}
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if (src3_use) {
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src3.value->RemoveUse(src3_use);
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src3.value = NULL;
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src3_use = NULL;
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}
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}
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void Instr::Remove() {
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// Remove all srcs/dest.
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Replace(&OPCODE_NOP_info, 0);
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if (prev) {
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prev->next = next;
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} else {
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block->instr_head = next;
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}
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if (next) {
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next->prev = prev;
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} else {
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block->instr_tail = prev;
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}
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}
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} // namespace hir
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} // namespace cpu
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} // namespace xe
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