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ppcopcodes: fix dcbz.

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This commit is contained in:
Maxim Poliakovski
2021-01-07 04:25:27 +01:00
parent dbbaf13a78
commit 2f3938c23f
1 changed files with 7 additions and 10 deletions
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9
cpu/ppc/ppcopcodes.cpp
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@@ -1355,16 +1355,13 @@ void dppc_interpreter::ppc_dcbtst() {
void dppc_interpreter::ppc_dcbz() { void dppc_interpreter::ppc_dcbz() {
ppc_grab_regsdab(); ppc_grab_regsdab();
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b); ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
if (!(ppc_state.pc & 32) && (ppc_state.pc < 0xFFFFFFE0UL)) {
ppc_grab_regsdab(); ppc_effective_address &= 0xFFFFFFE0; // align EA on a 32-byte boundary
ppc_effective_address = (reg_a == 0) ? ppc_result_b : (ppc_result_a + ppc_result_b);
mem_write_qword(ppc_effective_address, 0); mem_write_qword(ppc_effective_address, 0);
mem_write_qword((ppc_effective_address + 8), 0); mem_write_qword((ppc_effective_address + 8), 0);
mem_write_qword((ppc_effective_address + 16), 0); mem_write_qword((ppc_effective_address + 16), 0);
mem_write_qword((ppc_effective_address + 24), 0); mem_write_qword((ppc_effective_address + 24), 0);
} else {
ppc_exception_handler(Except_Type::EXC_ALIGNMENT, 0x00000);
}
} }