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debugger: mmudump

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folkert van heusden 2022-06-12 15:46:43 +02:00
parent 5fe319c316
commit 70543edbb8
2 changed files with 45 additions and 0 deletions
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2
bus.h
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@ -78,6 +78,8 @@ public:
uint16_t getMMR0() { return MMR0; }
uint16_t getMMR1() { return MMR1; }
uint16_t getMMR2() { return MMR2; }
uint16_t getMMR3() { return MMR3; }
void clearMMR1();
void addToMMR1(const int8_t delta, const uint8_t reg);
void setMMR2(const uint16_t value) { MMR2 = value; } // address

43
debugger.cpp
View file

@ -71,6 +71,43 @@ std::map<std::string, std::string> split(const std::vector<std::string> & kv_arr
return out;
}
void dump_par_pdr(console *const cnsl, bus *const b, const uint16_t pdrs, const uint16_t pars, const std::string & name, const int state)
{
if (state == 0 || state == 2)
cnsl->put_string_lf(name);
else
cnsl->put_string_lf(format("%s DISABLED", name.c_str()));
cnsl->put_string_lf(" PAR PDR");
for(int i=0; i<8; i++) {
uint16_t par_value = b->read(pars + i * 2, false, false, true);
uint16_t pdr_value = b->read(pdrs + i * 2, false, false, true);
uint16_t pdr_len = (((pdr_value >> 8) & 127) + 1) * 64;
cnsl->put_string_lf(format("%d] %06o %08o %06o %04o D%d A%d", i, par_value, par_value * 64, pdr_value, pdr_len, !!(pdr_value & 8), pdr_value & 7));
}
}
void mmu_dump(console *const cnsl, bus *const b)
{
uint16_t mmr0 = b->getMMR0();
cnsl->put_string_lf(mmr0 & 1 ? "MMU enabled" : "MMU NOT enabled");
uint16_t mmr3 = b->getMMR3();
dump_par_pdr(cnsl, b, 0172200, 0172240, "supervisor i-space", 0);
dump_par_pdr(cnsl, b, 0172220, 0172260, "supervisor d-space", 1 + (!!(mmr3 & 2)));
dump_par_pdr(cnsl, b, 0172300, 0172340, "kernel i-space", 0);
dump_par_pdr(cnsl, b, 0172320, 0172360, "kernel d-space", 1 + (!!(mmr3 & 4)));
dump_par_pdr(cnsl, b, 0177600, 0177640, "user i-space", 0);
dump_par_pdr(cnsl, b, 0177620, 0177660, "user d-space", 1 + (!!(mmr3 & 1)));
}
void debugger(console *const cnsl, bus *const b, std::atomic_uint32_t *const stop_event, const bool tracing_in)
{
int32_t trace_start_addr = -1;
@ -146,6 +183,11 @@ void debugger(console *const cnsl, bus *const b, std::atomic_uint32_t *const sto
continue;
}
else if (parts[0] == "mmudump") {
mmu_dump(cnsl, b);
continue;
}
else if (parts[0] == "strace") {
if (parts.size() != 2) {
trace_start_addr = -1;
@ -206,6 +248,7 @@ void debugger(console *const cnsl, bus *const b, std::atomic_uint32_t *const sto
cnsl->put_string_lf("sbp/cbp/lbp - set/clear/list breakpoint(s)");
cnsl->put_string_lf("trace/t - toggle tracing");
cnsl->put_string_lf("strace - start tracing from address - invoke without address to disable");
cnsl->put_string_lf("mmudump - dump MMU settings (PARs/PDRs)");
continue;
}