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#include <assert.h>
#include "instruction.h"
#include "emulator.h"
instruction::instruction(
const char * name,
evaluator * evaluator,
std::vector<register_address> dst,
unsigned int src_reg_count) :
m_name(name),
m_evaluator(evaluator),
m_dst(dst),
m_src_reg_count(src_reg_count)
{ }
void instruction::add_src_reg(std::vector<register_address> src_reg)
{
assert(m_src_regs.size() < m_src_reg_count);
m_src_regs.push_back(src_reg);
}
void instruction::trim_dst_regs()
{
unsigned int i;
for (i = 0; i < m_src_regs.size(); i++){
while (m_dst.size() > m_src_regs[i].size()) {
m_dst.pop_back();
}
}
}
add_instruction::add_instruction(
std::vector<register_address> dst,
std::vector<register_address> src0,
std::vector<register_address> src1)
:
/*XXX: Can we call our own constructor here? */
instruction("ADD", new add_evaluator(), dst, 2)
{
m_src_regs.push_back(src0);
m_src_regs.push_back(src1);
}
add_instruction::add_instruction(std::vector<register_address> dst) :
instruction("ADD", new add_evaluator(), dst, 2)
{ }
void
add_instruction::execute(emulator & emulator)
{
unsigned int i;
for (i = 0; i < m_dst.size(); i++) {
tree_value * val = new tree_value(this->m_evaluator,
emulator.get_value(m_src_regs[0][i]),
emulator.get_value(m_src_regs[1][i]));
emulator.set_value(m_dst[i], val);
}
}
mov_instruction::mov_instruction(std::vector<register_address> dst) :
instruction("MOV", NULL, dst, 1)
{ }
void
mov_instruction::execute(emulator & emulator)
{
unsigned int i;
for (i = 0; i < m_dst.size(); i++) {
emulator.set_value(m_dst[i],
emulator.get_value(m_src_regs[0][i]));
}
}
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