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ppcmmu: fix calculation for BAT access_bits.

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This commit is contained in:
Maxim Poliakovski 2021-04-10 23:43:54 +02:00
parent e7e28b4497
commit d545780071
1 changed files with 2 additions and 2 deletions
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4
cpu/ppc/ppcmmu.cpp
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@ -304,7 +304,7 @@ static uint32_t ppc_mmu_instr_translate(uint32_t la) {
// Format: %XY
// X - supervisor access bit, Y - problem/user access bit
// Those bits are mutually exclusive
unsigned access_bits = (~msr_pr << 1) | msr_pr;
unsigned access_bits = ((msr_pr ^ 1) << 1) | msr_pr;
for (int bat_index = 0; bat_index < 4; bat_index++) {
PPC_BAT_entry* bat_entry = &ibat_array[bat_index];
@ -344,7 +344,7 @@ static uint32_t ppc_mmu_addr_translate(uint32_t la, int is_write) {
// Format: %XY
// X - supervisor access bit, Y - problem/user access bit
// Those bits are mutually exclusive
unsigned access_bits = (~msr_pr << 1) | msr_pr;
unsigned access_bits = ((msr_pr ^ 1) << 1) | msr_pr;
for (int bat_index = 0; bat_index < 4; bat_index++) {
PPC_BAT_entry* bat_entry = &dbat_array[bat_index];