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EE.cpp
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#include <EE.hpp>
#include <cstring>
static inline float overflow_check(uint32_t value)
{
if ((value & 0x7F800000) == 0x7F800000)
value = (value & 0x80000000) | 0x7F7FFFFF;
return *(float*)&value;
}
void EE_COP1::execute(Instruction instr)
{
uint16_t function = instr.r_type.funct;
switch (function)
{
case 0x18: op_adda(instr); break;
case 0x1C: op_madd(instr); break;
}
}
void EE_COP1::op_adda(Instruction instr)
{
uint16_t fs = instr.r_type.rd;
uint16_t ft = instr.r_type.rt;
acc.fint = fpr[fs].fint + fpr[ft].fint;
}
void EE_COP1::op_madd(Instruction instr)
{
uint16_t fs = instr.r_type.rd;
uint16_t ft = instr.r_type.rt;
uint16_t fd = instr.r_type.sa;
float reg1 = overflow_check(fpr[fs].uint);
float reg2 = overflow_check(fpr[ft].uint);
float accumulator = overflow_check(acc.uint);
fpr[fs].fint = accumulator + (reg1 * reg2);
}
EmotionEngine::EmotionEngine(Bus* _bus)
: bus(_bus),
intc(INTC(this)),
timers(Timers(&intc))
{
pc = 0xBFC00000;
std::memset(regs, 0, sizeof(regs));
cop0.prid = 0x2E20;
next_instr = {};
next_instr.value = bus->Read32(pc, true);
next_instr.pc = pc;
regs[0].ud[0] = 0;
}
std::string regNames[] =
{
"$zero",
"$at",
"$v0",
"$v1",
"$a0",
"$a1",
"$a2",
"$a3",
"$t0",
"$t1",
"$t2",
"$t3",
"$t4",
"$t5",
"$t6",
"$t7",
"$s0",
"$s1",
"$s2",
"$s3",
"$s4",
"$s5",
"$s6",
"$s7",
"$t8",
"$t9",
"$k0",
"$k1",
"$gp",
"$sp",
"$fp",
"$ra"
};
void EmotionEngine::Clock(uint32_t cycles)
{
cycles_to_execute = cycles;
for (int cycle = cycles; cycle > 0; cycle--)
{
instr = next_instr;
if (pc == 0x80001000)
printf("[EE]: Entering Kernel\n");
if (pc == 0x00081FC0)
printf("[EE]: Entering EENULL\n");
fetch_next();
skip_branch_delay = false;
branch_taken = false;
if (instr.value == 0)
{
//printf("[EE]: NOP\n");
continue;
}
switch (instr.opcode)
{
case 0x00: special(); break;
case 0x01: regimm(); break;
case 0x02: j(); break;
case 0x03: jal(); break;
case 0x04: beq(); break;
case 0x05: bne(); break;
case 0x06: blez(); break;
case 0x07: bgtz(); break;
case 0x09: addiu(); break;
case 0x0A: slti(); break;
case 0x0B: sltiu(); break;
case 0x0C: andi(); break;
case 0x0D: ori(); break;
case 0x0E: xori(); break;
case 0x0F: lui(); break;
case 0x10: op_cop0(); break;
case 0x11: op_cop1(); break;
case 0x12: op_cop2(); break;
case 0x14: beql(); break;
case 0x15: bnel(); break;
case 0x19: daddiu(); break;
case 0x1A: ldl(); break;
case 0x1B: ldr(); break;
case 0x1C: mmi(); break;
case 0x1E: lq(); break;
case 0x1F: sq(); break;
case 0x20: lb(); break;
case 0x21: lh(); break;
case 0x23: lw(); break;
case 0x24: lbu(); break;
case 0x25: lhu(); break;
case 0x27: lwu(); break;
case 0x28: sb(); break;
case 0x29: sh(); break;
case 0x2B: sw(); break;
case 0x2C: sdl(); break;
case 0x2D: sdr(); break;
case 0x2F: cache(); break;
case 0x37: ld(); break;
case 0x39: swc1(); break;
case 0x3F: sd(); break;
default:
printf("[EE]: Unimplemented 0x%02X\n", instr.opcode);
exit(1);
}
regs[0].ud[0] = 0;
cycles_to_execute--;
cop0.count += 1;
}
timers.tick(cycles / 2);
if (intc.int_pending())
{
//printf("[EE] Interrupt!\n");
exception(Exception::Interrupt, true);
}
}
void EmotionEngine::special()
{
switch (instr.r_type.funct)
{
case 0x00:
sll();
break;
case 0x02:
srl();
break;
case 0x03:
sra();
break;
case 0x04:
sllv();
break;
case 0x06:
srlv();
break;
case 0x07:
srav();
break;
case 0x08:
jr();
break;
case 0x09:
jalr();
break;
case 0x0A:
movz();
break;
case 0x0B:
movn();
break;
case 0x0F:
sync();
break;
case 0x10:
mfhi();
break;
case 0x12:
mflo();
break;
case 0x14:
dsllv();
break;
case 0x17:
dsrav();
break;
case 0x18:
mult();
break;
case 0x1A:
div();
break;
case 0x1B:
divu();
break;
case 0x21:
addu();
break;
case 0x23:
subu();
break;
case 0x24:
op_and();
break;
case 0x25:
op_or();
break;
case 0x27:
nor();
break;
case 0x2A:
slt();
break;
case 0x2B:
sltu();
break;
case 0x2D:
daddu();
break;
case 0x38:
dsll();
break;
case 0x3A:
dsrl();
break;
case 0x3C:
dsll32();
break;
case 0x3E:
dsrl32();
break;
case 0x3F:
dsra32();
break;
default:
printf("[EE]: Unimplemented special opcode 0x%02X\n", instr.r_type.funct);
exit(1);
}
}
void EmotionEngine::regimm()
{
uint16_t type = (instr.value >> 16) & 0x1F;
switch (type)
{
case 0x00:
bltz();
break;
case 0x01:
bgez();
break;
default:
printf("[EE]: Unimplemented regimm opcode 0x%02X\n", type);
exit(1);
}
}
void EmotionEngine::bltz()
{
int32_t imm = (int16_t)instr.i_type.immediate;
uint16_t rs = instr.i_type.rs;
int32_t offset = imm << 2;
int64_t reg = regs[rs].ud[0];
//printf("[EE]: BLTZ %s, 0x%08X\n", regNames[rs].c_str(), instr.pc + 4 + offset);
if (reg < 0)
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
next_instr.is_delay_slot = true;
}
void EmotionEngine::bgez()
{
int32_t imm = (int16_t)instr.i_type.immediate;
uint16_t rs = instr.i_type.rs;
int32_t offset = imm << 2;
int64_t reg = (int64_t)regs[rs].ud[0];
next_instr.is_delay_slot = true;
//printf("[EE]: BGEZ %s, 0x%08X\n", regNames[rs].c_str(), instr.pc + 4 + offset);
if (reg >= 0)
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
}
void EmotionEngine::j()
{
uint32_t instr_index = instr.j_type.target;
pc = ((instr.pc + 4) & 0xF0000000) | (instr_index << 2);
next_instr.is_delay_slot = true;
branch_taken = true;
//printf("[EE]: J 0x%08X\n", pc);
}
void EmotionEngine::jal()
{
uint32_t instr_index = instr.j_type.target;
regs[31].ud[0] = instr.pc + 8;
pc = ((instr.pc + 4) & 0xF0000000) | (instr_index << 2);
next_instr.is_delay_slot = true;
branch_taken = true;
//printf("[EE]: JAL 0x%08X\n", pc);
}
void EmotionEngine::beq()
{
uint8_t rs = instr.i_type.rs;
uint8_t rt = instr.i_type.rt;
int64_t imm = (int16_t)instr.i_type.immediate;
int32_t offset = imm << 2;
//printf("[EE]: BEQ %s (0x%08lX), %s, 0x%08X\n", regNames[rs].c_str(), regs[rs].ud[0], regNames[rt].c_str(), instr.pc + offset + 4);
if (regs[rs].ud[0] == regs[rt].ud[0])
{
pc = instr.pc + offset + 4;
branch_taken = true;
}
next_instr.is_delay_slot = true;
}
void EmotionEngine::bne()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int32_t imm = (int16_t)instr.i_type.immediate;
//printf("[EE]: BNE %s, %s, 0x%08X (%s)\n", regNames[rt].c_str(), regNames[rs].c_str(), instr.pc + 4 + (imm << 2), regs[rs].ud[0] != regs[rt].ud[0] ? "taken" : "ignored");
int32_t offset = imm << 2;
if (regs[rs].ud[0] != regs[rt].ud[0])
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
next_instr.is_delay_slot = true;
}
void EmotionEngine::blez()
{
int32_t imm = (int16_t)instr.i_type.immediate;
uint16_t rs = instr.i_type.rs;
int32_t offset = imm << 2;
//printf("[EE]: BLEZ 0x%08X\n", instr.pc + 4 + offset);
int64_t reg = regs[rs].ud[0];
if (reg <= 0)
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
next_instr.is_delay_slot = true;
}
void EmotionEngine::bgtz()
{
int32_t imm = (int16_t)instr.i_type.immediate;
uint16_t rs = instr.i_type.rs;
int32_t offset = imm << 2;
//printf("[EE]: BGTZ 0x%08X\n", instr.pc + 4 + offset);
int64_t reg = regs[rs].ud[0];
if (reg > 0)
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
next_instr.is_delay_slot = true;
}
void EmotionEngine::addiu()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int16_t imm = (int16_t)instr.i_type.immediate;
int32_t result = regs[rs].ud[0] + imm;
regs[rt].ud[0] = result;
//printf("[EE]: ADDIU %s, %s, 0x%08X\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
}
void EmotionEngine::slti()
{
uint8_t rs = instr.i_type.rs;
uint8_t rt = instr.i_type.rt;
int64_t imm = (int16_t)instr.i_type.immediate;
int64_t reg = regs[rs].ud[0];
regs[rt].ud[0] = reg < imm;
//printf("[EE]: SLTI %s, %s, 0x%08lX\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
}
void EmotionEngine::sltiu()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
uint64_t imm = (int16_t)instr.i_type.immediate;
regs[rt].ud[0] = regs[rs].ud[0] < imm;
//printf("[EE]: SLTIU %s, %s, 0x%08lX\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
}
void EmotionEngine::andi()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
uint64_t imm = instr.i_type.immediate;
regs[rt].ud[0] = regs[rs].ud[0] & imm;
//printf("[EE]: ANDI %s, %s, 0x%08lX\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
}
void EmotionEngine::ori()
{
uint16_t rs = instr.i_type.rs;
uint16_t rt = instr.i_type.rt;
uint16_t imm = instr.i_type.immediate;
//printf("[EE]: ORI %s, %s, 0x%08X\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
regs[rt].ud[0] = regs[rs].ud[0] | (uint64_t)imm;
}
void EmotionEngine::xori()
{
uint16_t rs = instr.i_type.rs;
uint16_t rt = instr.i_type.rt;
uint16_t imm = instr.i_type.immediate;
//printf("[EE]: XORI %s, %s, 0x%08X\n", regNames[rt].c_str(), regNames[rs].c_str(), imm);
regs[rt].ud[0] = regs[rs].ud[0] ^ (uint64_t)imm;
}
void EmotionEngine::lui()
{
uint16_t rt = instr.i_type.rt;
uint32_t imm = instr.i_type.immediate;
regs[rt].ud[0] = (int32_t)(imm << 16);
//printf("[EE]: LUI %s, 0x%08X\n", regNames[rt].c_str(), imm << 16);
}
void EmotionEngine::op_cop0()
{
uint8_t fmt = instr.value >> 21 & 0x1F;
switch (fmt)
{
case 0:
{
switch (instr.value & 0x7)
{
case 0:
{
uint16_t rd = (instr.value >> 11) & 0x1F;
uint16_t rt = (instr.value >> 16) & 0x1F;
regs[rt].ud[0] = cop0.regs[rd];
//printf("[EE]: MFC0 %s, $%d (0x%08X)\n", regNames[rt].c_str(), rd, cop0.regs[rd]);
break;
}
default:
printf("[EE]: Unimplemented MT0 opcode\n");
exit(1);
}
break;
}
case 4:
{
uint16_t rt = (instr.value >> 16) & 0x1F;
uint16_t rd = (instr.value >> 11) & 0x1F;
cop0.regs[rd] = regs[rt].uw[0];
//printf("[EE]: MTC0 $%d, %s\n", rd, regNames[rt].c_str());
break;
}
case 0x10:
{
uint8_t fmt = instr.value & 0x3f;
switch (fmt)
{
case 0x02:
//printf("[EE]: TLBWI\n");
break;
default:
printf("[EE]: Unknown COP0 TLB opcode 0x%02X\n", fmt);
exit(1);
}
break;
}
default:
printf("[EE]: Unknown cop0 opcode 0x%02X\n", fmt);
exit(1);
}
}
void EmotionEngine::op_cop1()
{
uint32_t fmt = (instr.value >> 21) & 0x1F;
switch (fmt)
{
case 0x04:
mtc1();
break;
case 0x06:
ctc1();
break;
case 0x10:
cop1.execute(instr);
break;
default:
printf("[EE]: Unimplemented COP1 0x%X\n", fmt);
exit(1);
}
}
void EmotionEngine::mtc1()
{
uint16_t fs = instr.r_type.rd;
uint16_t rt = instr.r_type.rt;
cop1.fpr[fs].uint = regs[rt].uw[0];
}
void EmotionEngine::ctc1()
{
uint16_t fs = instr.r_type.rd;
uint16_t rt = instr.r_type.rt;
switch (fs)
{
case 0: cop1.fcr0.value = regs[rt].uw[0]; break;
case 31: cop1.fcr31.value = regs[rt].uw[0]; break;
}
}
void EmotionEngine::op_cop2()
{
uint32_t fmt = (instr.value >> 21) & 0x1F;
auto& vu0 = bus->vu[0];
switch (fmt)
{
case 0x02:
vu0->cfc2(instr);
break;
case 0x05:
vu0->qmtc2(instr);
break;
case 0x06:
vu0->ctc2(instr);
break;
case 0x10 ... 0x1F:
vu0->special1(instr);
break;
case 0x01:
vu0->qmfc2(instr);
break;
default:
printf("[EE]: Unimplemented COP2 0x%X\n", fmt);
exit(1);
}
}
void EmotionEngine::beql()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int32_t imm = (int16_t)instr.i_type.immediate;
int32_t offset = imm << 2;
//printf("[EE]: BEQL %s, %s, 0x%08X\n", regNames[rs].c_str(), regNames[rt].c_str(), instr.pc + 4 + offset);
if (regs[rs].ud[0] == regs[rt].ud[0])
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
else
{
fetch_next();
skip_branch_delay = 1;
}
}
void EmotionEngine::bnel()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int32_t imm = (int16_t)instr.i_type.immediate;
int32_t offset = imm << 2;
//printf("[EE]: BNEL %s, %s, 0x%08X\n", regNames[rs].c_str(), regNames[rt].c_str(), instr.pc + 4 + offset);
if (regs[rs].ud[0] != regs[rt].ud[0])
{
pc = instr.pc + 4 + offset;
branch_taken = true;
}
else
{
fetch_next();
skip_branch_delay = 1;
}
}
void EmotionEngine::daddiu()
{
uint16_t rs = instr.i_type.rs;
uint16_t rt = instr.i_type.rt;
int16_t offset = (int16_t)instr.i_type.immediate;
int64_t reg = regs[rs].ud[0];
regs[rt].ud[0] = reg + offset;
}
void EmotionEngine::ldl()
{
static const uint64_t LDL_MASK[8] =
{
0x00ffffffffffffffULL, 0x0000ffffffffffffULL, 0x000000ffffffffffULL, 0x00000000ffffffffULL,
0x0000000000ffffffULL, 0x000000000000ffffULL, 0x00000000000000ffULL, 0x0000000000000000ULL
};
static const uint8_t LDL_SHIFT[8] = { 56, 48, 40, 32, 24, 16, 8, 0 };
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t addr = offset + regs[base].uw[0];
uint32_t aligned_addr = addr & ~0x7;
uint32_t shift = addr & 0x7;
auto dword = bus->Read64(aligned_addr, true);
uint64_t result = (regs[rt].ud[0] & LDL_MASK[shift]) | (dword << LDL_SHIFT[shift]);
regs[rt].ud[0] = result;
}
void EmotionEngine::ldr()
{
static const uint64_t LDR_MASK[8] =
{
0x0000000000000000ULL, 0xff00000000000000ULL, 0xffff000000000000ULL, 0xffffff0000000000ULL,
0xffffffff00000000ULL, 0xffffffffff000000ULL, 0xffffffffffff0000ULL, 0xffffffffffffff00ULL
};
static const uint8_t LDR_SHIFT[8] = { 0, 8, 16, 24, 32, 40, 48, 56 };
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t addr = offset + regs[base].uw[0];
uint32_t aligned_addr = addr & ~0x7;
uint32_t shift = addr & 0x7;
auto dword = bus->Read64(aligned_addr, true);
uint64_t result = (regs[rt].ud[0] & LDR_MASK[shift]) | (dword << LDR_SHIFT[shift]);
regs[rt].ud[0] = result;
}
void EmotionEngine::div()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int32_t reg1 = regs[rs].uw[0];
int32_t reg2 = regs[rt].uw[0];
if (reg2 == 0)
{
hi0 = reg1;
lo0 = reg1 >= 0 ? (int32_t)0xFFFFFFFF : 1;
}
else if (reg1 == 0x80000000 && reg2 == -1)
{
hi0 = 0;
lo0 = (int32_t)0x80000000;
}
else
{
hi0 = (int32_t)(reg1 % reg2);
lo0 = (int32_t)(reg1 / reg2);
}
//printf("[EE]: DIV %s, %s\n", regNames[rs].c_str(), regNames[rt].c_str());
}
void EmotionEngine::mmi()
{
uint16_t type = instr.value & 0x1F;
switch (type)
{
case 0x08:
{
uint8_t subtype = (instr.value >> 6) & 0x1F;
switch (subtype)
{
default:
printf("[EE]: Unknown MMI0 opcode 0x%02X\n", subtype);
exit(1);
}
break;
}
case 0x09:
mmi2();
break;
case 0x12:
mflo1();
break;
case 0x18:
mult1();
break;
case 0x1A:
div1();
break;
case 0x1B:
divu1();
break;
default:
printf("[EE]: Unimplemented MMI opcode 0x%02X\n", type);
exit(1);
}
}
void EmotionEngine::mmi2()
{
switch (instr.r_type.sa)
{
case 0x12:
pand();
break;
default:
printf("[EE]: Unimplemented MMI2 opcode 0x%02X\n", instr.r_type.sa);
exit(1);
}
}
void EmotionEngine::pand()
{
uint16_t rs = instr.r_type.rs;
uint16_t rd = instr.r_type.rd;
uint16_t rt = instr.r_type.rt;
regs[rd].ud[0] = regs[rs].ud[0] & regs[rt].ud[0];
regs[rd].ud[1] = regs[rs].ud[1] & regs[rt].ud[1];
}
void EmotionEngine::mflo1()
{
uint16_t rd = instr.r_type.rd;
regs[rd].ud[0] = lo1;
//printf("[EE]: MFLO1 %s\n", regNames[rd].c_str());
}
void EmotionEngine::mult1()
{
uint16_t rt = instr.r_type.rt;
uint16_t rs = instr.r_type.rs;
uint16_t rd = instr.r_type.rd;
int64_t reg1 = (int64_t)regs[rs].ud[0];
int64_t reg2 = (int64_t)regs[rt].ud[0];
int64_t result = reg1 * reg2;
regs[rd].ud[0] = lo1 = (int32_t)(result & 0xFFFFFFFF);
hi1 = (int32_t)(result >> 32);
//printf("[EE]: MULT1 %s, %s, %s\n", regNames[rd].c_str(), regNames[rs].c_str(), regNames[rt].c_str());
}
void EmotionEngine::div1()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
int32_t reg1 = regs[rs].uw[0];
int32_t reg2 = regs[rt].uw[0];
if (reg2 == 0)
{
hi0 = reg1;
lo0 = reg1 >= 0 ? (int32_t)0xFFFFFFFF : 1;
}
else if (reg1 == 0x80000000 && reg2 == -1)
{
hi1 = 0;
lo1 = (int32_t)0x80000000;
}
else
{
hi1 = (int32_t)(reg1 % reg2);
lo1 = (int32_t)(reg1 / reg2);
}
//printf("[EE]: DIV1 %s, %s\n", regNames[rs].c_str(), regNames[rt].c_str());
}
void EmotionEngine::divu1()
{
uint16_t rt = instr.i_type.rt;
uint16_t rs = instr.i_type.rs;
if (regs[rt].uw[0] != 0)
{
lo1 = (int64_t)(int32_t)(regs[rs].uw[0] / regs[rt].uw[0]);
hi1 = (int64_t)(int32_t)(regs[rs].uw[0] % regs[rt].uw[0]);
//printf("[EE]: DIVU1 %s, %s\n", regNames[rs].c_str(), regNames[rt].c_str());
}
}
void EmotionEngine::lq()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t imm = (int16_t)instr.i_type.immediate;
uint32_t vaddr = regs[base].uw[0] + imm;
regs[rt] = bus->Read128(vaddr);
}
void EmotionEngine::sq()
{
uint16_t base = instr.i_type.rs;
uint16_t rt = instr.i_type.rt;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
if ((vaddr & 0xF) != 0)
{
printf("[ERROR] SQ: Address 0x%08X is not aligned\n", vaddr);
exception(Exception::AddrErrorStore, true);
}
else
bus->Write128(vaddr, regs[rt]);
}
void EmotionEngine::lb()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
regs[rt].ud[0] = bus->Read8(vaddr, true);
//printf("[EE]: LB %s, 0x%04X(%s) 0x%08X\n", regNames[rt].c_str(), offset, regNames[base].c_str(), vaddr);
}
void EmotionEngine::lh()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
if (vaddr & 0x1)
{
printf("[EE]: LH: Address 0x%08X is not aligned\n", vaddr);
exception(Exception::AddrErrorLoad, true);
}
else
regs[rt].ud[0] = (int16_t)bus->Read16(vaddr, true);
}
void EmotionEngine::lw()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
if (vaddr & 0x3)
{
//printf("[EE]: LW: Address 0x%08X is not aligned\n", vaddr);
exception(Exception::AddrErrorLoad, true);
}
else
{
regs[rt].ud[0] = (int32_t)bus->Read32(vaddr, true);
//printf("[EE]: LW %s, 0x%X(%s) 0x%08X\n", regNames[rt].c_str(), offset, regNames[base].c_str(), vaddr);
}
}
void EmotionEngine::lbu()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
regs[rt].ud[0] = bus->Read8(vaddr, true);
//printf("[EE]: LBU %s, 0x%X(%s)\n", regNames[rt].c_str(), offset, regNames[base].c_str());
}
void EmotionEngine::lhu()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
if (vaddr & 0x1)
{
//printf("[EE]: LHU: Address 0x%08X is not aligned\n", vaddr);
exception(Exception::AddrErrorLoad, true);
}
else
regs[rt].ud[0] = bus->Read16(vaddr, true);
//printf("[EE]: LHU %s, 0x%02X(%s)\n", regNames[rt].c_str(), offset, regNames[base].c_str());
}
void EmotionEngine::lwu()
{
uint16_t rt = instr.i_type.rt;
uint16_t base = instr.i_type.rs;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
if (vaddr & 0x3)
{
exception(Exception::AddrErrorLoad, true);
}
else
regs[rt].ud[0] = bus->Read32(vaddr, true);
}
void EmotionEngine::sb()
{
uint16_t base = instr.i_type.rs;
uint16_t rt = instr.i_type.rt;
int16_t offset = (int16_t)instr.i_type.immediate;
uint32_t vaddr = offset + regs[base].uw[0];
uint16_t data = regs[rt].uw[0] & 0xFF;
//printf("[EE]: SB %s, 0x%02X(%s)\n", regNames[rt].c_str(), offset, regNames[base].c_str());