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ppcopcodes: fix TWI emulation.

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This commit is contained in:
Maxim Poliakovski 2020-04-21 04:47:08 +02:00
parent 7154e51d86
commit 3d13bc1ca6
1 changed files with 10 additions and 9 deletions
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19
cpu/ppc/ppcopcodes.cpp
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@ -1786,15 +1786,16 @@ void ppc_tw() {
}
}
void ppc_twi() {
simm = (int32_t)((int16_t)((ppc_cur_instruction) & 65535));
reg_b = (ppc_cur_instruction >> 16) & 31;
ppc_to = (ppc_cur_instruction >> 21) & 31;
if ((((int32_t)ppc_state.gpr[reg_a] < simm) & (ppc_to & 0x10)) || \
(((int32_t)ppc_state.gpr[reg_a] > simm)& (ppc_to & 0x08)) || \
(((int32_t)ppc_state.gpr[reg_a] == simm) & (ppc_to & 0x04)) || \
((ppc_state.gpr[reg_a] < (uint32_t)simm) & (ppc_to & 0x02)) || \
((ppc_state.gpr[reg_a] > (uint32_t)simm)& (ppc_to & 0x01))) {
void ppc_twi()
{
simm = (int32_t)((int16_t)((ppc_cur_instruction) & 0xFFFF));
reg_a = (ppc_cur_instruction >> 16) & 0x1F;
ppc_to = (ppc_cur_instruction >> 21) & 0x1F;
if ((((int32_t)ppc_state.gpr[reg_a] < simm) && (ppc_to & 0x10)) ||
(((int32_t)ppc_state.gpr[reg_a] > simm) && (ppc_to & 0x08)) ||
(((int32_t)ppc_state.gpr[reg_a] == simm) && (ppc_to & 0x04)) ||
((ppc_state.gpr[reg_a] < (uint32_t)simm) && (ppc_to & 0x02)) ||
((ppc_state.gpr[reg_a] > (uint32_t)simm) && (ppc_to & 0x01))) {
ppc_exception_handler(Except_Type::EXC_PROGRAM, 0x20000);
}
}