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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::execute(emulator & emulator)
{
unsigned int i;
for (i = 0; i < m_dst.size(); i++) {
value * l = NULL;
value * r = NULL;
switch(m_src_regs.size()) {
case 2:
r = emulator.get_value(m_src_regs[1][i]);
/* Fall trough */
case 1:
l = emulator.get_value(m_src_regs[0][i]);
break;
}
emulator.queue_write(m_dst[i],
new tree_value(m_evaluator, l, r));
}
}
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);
}
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.queue_write(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.queue_write(m_dst[i],
emulator.get_value(m_src_regs[0][i]));
}
}
mul_instruction::mul_instruction(std::vector<register_address> dst) :
instruction("MUL", new mul_evaluator(), dst, 2)
{ }
void
mul_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.queue_write(m_dst[i], val);
}
}
mad_instruction::mad_instruction(std::vector<register_address> dst) :
instruction("MAD", NULL, dst, 3)
{ }
void
mad_instruction::execute(emulator & emulator)
{
unsigned int i;
for(i = 0; i < m_dst.size(); i++) {
tree_value * mul = new tree_value(new mul_evaluator(),
emulator.get_value(m_src_regs[0][i]),
emulator.get_value(m_src_regs[1][i]));
tree_value * mad = new tree_value(new add_evaluator(),
mul, emulator.get_value(m_src_regs[2][i]));
emulator.queue_write(m_dst[i], mad);
}
}
abs_instruction::abs_instruction(std::vector<register_address> dst) :
instruction("ABS", new abs_evaluator(), dst, 1)
{ }
sub_instruction::sub_instruction(std::vector<register_address> dst) :
instruction("SUB", new sub_evaluator(), dst, 2)
{ }
sat_instruction::sat_instruction(std::vector<register_address> dst) :
instruction("SAT", new sat_evaluator(), dst, 1)
{ }
rcp_instruction::rcp_instruction(std::vector<register_address> dst) :
instruction("RCP", new rcp_evaluator(), dst, 1)
{ }
min_instruction::min_instruction(std::vector<register_address> dst) :
instruction("MIN", new min_evaluator(), dst, 2)
{ }
max_instruction::max_instruction(std::vector<register_address> dst) :
instruction("MAX", new max_evaluator(), dst, 2)
{ }
dp_instruction::dp_instruction(
unsigned int components,
std::vector<register_address> dst)
:
instruction("DP", NULL, dst, 2),
m_components(components)
{ }
void
dp_instruction::execute(emulator & emulator)
{
std::vector<tree_value *> mul;
tree_value * dp;
unsigned int i;
int j;
for (i = 0; i < m_components; i++) {
mul.push_back(new tree_value(
new mul_evaluator(),
emulator.get_value(m_src_regs[0][i]),
emulator.get_value(m_src_regs[1][i])));
}
dp = new tree_value(new add_evaluator(), mul[mul.size() -1],
mul[mul.size() -2]);
for (j = mul.size() - 3; j >= 0; j--) {
dp = new tree_value(new add_evaluator(), mul[j], dp);
}
for (i = 0; i < m_dst.size(); i++) {
emulator.queue_write(m_dst[i], dp->clone());
}
delete dp;
}
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