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ppcfpopcodes: Fix fdiv for MPC601.

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joevt 2024-12-02 00:57:43 -08:00 committed by dingusdev
parent b45b0a8df4
commit bce4c98475
1 changed files with 9 additions and 1 deletions
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10
cpu/ppc/ppcfpopcodes.cpp
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@ -232,7 +232,15 @@ template <field_rc rec>
void dppc_interpreter::ppc_fdiv(uint32_t opcode) {
ppc_grab_regsfpdab(opcode);
double ppc_dblresult64_d = val_reg_a / val_reg_b;
double ppc_dblresult64_d;
if (is_601 && FPR_INT(reg_b) == 0x8000000000000000 && val_reg_a > 0) {
ppc_dblresult64_d = val_reg_b;
fpresult_update(ppc_dblresult64_d);
return;
}
ppc_dblresult64_d = val_reg_a / val_reg_b;
if (val_reg_b == 0.0) {
ppc_state.fpscr |= 0xa0000000;