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Fix external exception processing.

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This commit is contained in:
Maxim Poliakovski
2022-01-10 17:27:27 +01:00
parent d4ecb77b24
commit aefc66d118
3 changed files with 13 additions and 5 deletions
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cpu/ppc/ppcexceptions.cpp
+5 -4
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@@ -29,8 +29,7 @@ along with this program. If not, see <https://www.gnu.org/licenses/>.
jmp_buf exc_env; /* Global exception environment. */
[[noreturn]] void ppc_exception_handler(Except_Type exception_type, uint32_t srr1_bits) {
grab_exception = true;
void ppc_exception_handler(Except_Type exception_type, uint32_t srr1_bits) {
#ifdef CPU_PROFILING
exceptions_processed++;
#endif
@@ -61,7 +60,7 @@ jmp_buf exc_env; /* Global exception environment. */
break;
case Except_Type::EXC_EXT_INT:
ppc_state.spr[SPR::SRR0] = ppc_next_instruction_address;
ppc_state.spr[SPR::SRR0] = ppc_state.pc & 0xFFFFFFFC;
ppc_next_instruction_address = 0x0500;
break;
@@ -118,7 +117,9 @@ jmp_buf exc_env; /* Global exception environment. */
mmu_change_mode();
longjmp(exc_env, 2); /* return to the main execution loop. */
if (exception_type != Except_Type::EXC_EXT_INT) {
longjmp(exc_env, 2); /* return to the main execution loop. */
}
}