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Add cpu dump function after trigerring SEGV

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This commit is contained in:
rkx1209 2018-04-03 17:18:12 +09:00
parent 1e19f441d7
commit 34a21912ae
3 changed files with 27 additions and 8 deletions
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14
ARMv8/ARMv8.cpp
View file

@ -22,21 +22,21 @@ void RunLoop() {
void Dump() {
int cnt = 1;
debug_print ("CPU Dump:\n");
ns_print ("CPU Dump:\n");
for (int r = 0; r < GPR_DUMMY; r++) {
if (!X(r))
continue;
if (r == GPR_LR)
debug_print ("LR:\t");
ns_print ("LR:\t");
else if (r == GPR_SP)
debug_print ("SP:\t");
ns_print ("SP:\t");
else
debug_print ("X%d:\t", r);
debug_print ("0x%016lx%c", X(r), cnt % 3 == 0 ? '\n' : '\t');
ns_print ("X%d:\t", r);
ns_print ("0x%016lx%c", X(r), cnt % 3 == 0 ? '\n' : '\t');
cnt++;
}
debug_print ("PC:\t0x%016lx\n", PC);
debug_print ("NZCV:\t0x%016lx\n", NZCV);
ns_print ("PC:\t0x%016lx\n", PC);
ns_print ("NZCV:\t0x%016lx\n", NZCV);
}
static uint64_t counter;

2
Cpu.cpp
View file

@ -29,7 +29,7 @@ State GetState() {
}
void DumpMachine() {
ARMv8::Dump ();
//ARMv8::Dump ();
if (TraceOut)
ARMv8::DumpJson (TraceOut);
}

19
Main.cpp
View file

@ -1,5 +1,6 @@
/* nsemu - LGPL - Copyright 2017 rkx1209<rkx1209dev@gmail.com> */
#include "Nsemu.hpp"
#include <csignal>
#include "optionparser.h"
using namespace std;
struct Arg : public option::Arg {
@ -88,6 +89,14 @@ const option::Descriptor usage[] =
{ 0, 0, nullptr, nullptr, nullptr, nullptr }
};
static void SignalHandler(int sig, siginfo_t* sig_info, void* sig_data) {
if(sig == SIGSEGV) {
ns_print ("SEGV: %p\n", sig_info->si_addr );
ARMv8::Dump();
_Exit(-1);
}
}
int main(int argc, char **argv) {
Nsemu::create ();
Nsemu *nsemu = Nsemu::get_instance ();
@ -141,6 +150,16 @@ printUsage:
goto printUsage;
}
}
/* ### Register SEGV handler for debugging ### */
struct sigaction segv_act;
sigemptyset(&segv_act.sa_mask);
sigaddset(&segv_act.sa_mask, SIGSEGV);
segv_act.sa_sigaction = SignalHandler;
segv_act.sa_flags = SA_SIGINFO|SA_RESTART|SA_ONSTACK;
if( sigaction( SIGSEGV, &segv_act, NULL ) == -1 ){
ns_abort ("Failed to set my signal handler.\n");
}
Banner ();
nsemu->BootUp (parse.nonOption (0));
Nsemu::destroy ();