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getting floating point stuff now

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iris
2026-05-18 12:06:03 +02:00
parent b13161f9c2
commit aeb5094b05
8 changed files with 77 additions and 36 deletions
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core/broadway/instructions.cpp
+18 -5
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@@ -50,7 +50,7 @@ bool broadway::test_cond_and_ctr(ircolib::u32 instr) {
const ircolib::u8 bo = (instr >> 21) & 0x1f;
const ircolib::u8 bi = (instr >> 16) & 0x1f;
const bool ctr_ok = ircolib::is_bit_set(bo, 2) || ((--ctr == 0) == (ircolib::is_bit_set(bo, 1)));
const bool cond_ok = ircolib::is_bit_set(bo, 4) || (ircolib::is_bit_set(cr, 32 - bi) == ircolib::is_bit_set(bo, 3));
const bool cond_ok = ircolib::is_bit_set(bo, 4) || (get_cr_bit(0, bi) == ircolib::is_bit_set(bo, 3));
return cond_ok && ctr_ok;
}
@@ -175,6 +175,18 @@ void broadway::lwz(ircolib::u32 instr, mem &mem) {
gpr[utils::RD(instr)] = mem.read32(ea);
}
void broadway::lfd(ircolib::u32 instr, mem &mem) {
ircolib::u32 b = gpr[utils::RA(instr)];
if (utils::RA(instr) == 0)
b = 0;
ircolib::u32 ea = ircolib::s32(b) + utils::SIMM(instr);
double val;
ircolib::u64 read = mem.read64(ea);
memcpy(&val, &read, 8);
fpr[utils::RD(instr)] = val;
}
void broadway::bclrx(ircolib::u32 instr) {
const bool link = instr & 1;
@@ -195,9 +207,8 @@ void broadway::cmpi(ircolib::u32 instr) {
else
c = 0b100;
const ircolib::u32 result = ((xer.so << 3) | c) << (28 - 4 * utils::crfD(instr));
cr &= ~(0xffff << (28 - 4 * utils::crfD(instr)));
cr |= result;
const ircolib::u8 result = (xer.so << 3) | c;
set_cr(result, utils::crfD(instr));
}
void broadway::rlwinm(ircolib::u32 instr) {
@@ -222,6 +233,8 @@ void broadway::lwzu(ircolib::u32 instr, mem &mem) {
void broadway::rfi(ircolib::u32 instr) { pc = srr0; }
void broadway::andi(ircolib::u32 instr) {
gpr[utils::RA(instr)] = gpr[utils::RS(instr)] & (ircolib::u32(utils::UIMM(instr)) << 16);
const ircolib::s32 result = gpr[utils::RS(instr)] & utils::UIMM(instr);
gpr[utils::RA(instr)] = result;
cr0_update(true, result);
}
} // namespace weee::core