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Fix LR update in bc instructions

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Only executes when the branch path is taken.
This commit is contained in:
dingusdev
2024-11-20 20:53:59 -07:00
parent 0835e6f9f4
commit 5a0a7b12e4
1 changed files with 13 additions and 12 deletions
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cpu/ppc/ppcopcodes.cpp
+13 -12
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@@ -1138,11 +1138,12 @@ void dppc_interpreter::ppc_bc() {
ppc_next_instruction_address = br_bd;
else
ppc_next_instruction_address = uint32_t(ppc_state.pc + br_bd);
exec_flags = EXEF_BRANCH;
}
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
exec_flags = EXEF_BRANCH;
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
}
}
template void dppc_interpreter::ppc_bc<LK0, AA0>();
@@ -1174,11 +1175,11 @@ void dppc_interpreter::ppc_bcctr() {
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ctr & ~3UL);
exec_flags = EXEF_BRANCH;
}
exec_flags = EXEF_BRANCH;
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
}
}
template void dppc_interpreter::ppc_bcctr<LK0, NOT601>();
@@ -1201,11 +1202,11 @@ void dppc_interpreter::ppc_bclr() {
if (ctr_ok && cnd_ok) {
ppc_next_instruction_address = (ppc_state.spr[SPR::LR] & ~3UL);
exec_flags = EXEF_BRANCH;
}
exec_flags = EXEF_BRANCH;
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
if (l)
ppc_state.spr[SPR::LR] = uint32_t(ppc_state.pc + 4);
}
}
template void dppc_interpreter::ppc_bclr<LK0>();