6502/CLK
1
0
Fork 0
mirror of https://github.com/TomHarte/CLK.git synced 2024-12-25 18:30:21 +00:00
Code Issues Projects Releases Wiki Activity

Add a specific shout-out on prefetch abort, for debugging.

Browse Source
This commit is contained in:
Thomas Harte 2024-03-07 10:23:46 -05:00
parent 38b5624639
commit 7cdceb7b4f
1 changed files with 9 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
Machines/Acorn/Archimedes/Archimedes.cpp
View File

@ -554,18 +554,26 @@ class ConcreteMachine:
// MARK: - TimedMachine.
void run_for(Cycles cycles) override {
static uint32_t last_pc = 0;
auto instructions = cycles.as<int>();
while(instructions--) {
uint32_t instruction;
if(!executor_.bus.read(executor_.pc(), instruction, executor_.registers().mode(), false)) {
logger.info().append("Prefetch abort at %08x; last good was at %08x", executor_.pc(), last_pc);
executor_.prefetch_abort();
// TODO: does a double abort cause a reset?
executor_.bus.read(executor_.pc(), instruction, executor_.registers().mode(), false);
} else {
last_pc = executor_.pc();
}
// TODO: pipeline prefetch?
// logger.info().append("%08x: %08x", executor_.pc(), instruction);
// static bool log = false;
// if(log) {
// logger.info().append("%08x: %08x", executor_.pc(), instruction);
// }
InstructionSet::ARM::execute<arm_model>(instruction, executor_);
}
}