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add memory dump

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This commit is contained in:
Jorj Bauer 2022-01-10 08:43:13 -05:00
parent d75cb2f498
commit 9c4bcd1a3d
1 changed files with 49 additions and 0 deletions
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49
nix/debugger.cpp
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@ -102,6 +102,29 @@ bool getAddress(const char *buf, unsigned int *addrOut)
return false;
}
bool getTwoAddresses(const char *buf, unsigned int *addrOut1, unsigned int *addrOut2)
{
unsigned int val, val2;
if (sscanf(buf, " 0x%X 0x%X", &val, &val2) == 2 ||
sscanf(buf, " 0x%x 0x%X", &val, &val2) == 2
) {
*addrOut1 = val;
*addrOut2 = val2;
return true;
} else if (sscanf(buf, " $%X $%X", &val, &val2) == 2 ||
sscanf(buf, " $%x $%X", &val, &val2) == 2
) {
*addrOut1 = val;
*addrOut2 = val2;
return true;
} else if (sscanf(buf, " %d %d", &val, &val2) == 2) {
*addrOut1 = val;
*addrOut2 = val2;
return true;
}
return false;
}
#define GETCH { if ((read(cd,&b,1)) == -1) { close(cd); cd=-1; return; } }
#define GETLN { int ptr=0; while (((read(cd,&b,1)) != -1) && ptr < sizeof(buf) && b != 10 && b != 13) { if (b) {buf[ptr++] = b;} } buf[ptr]=0; }
@ -170,6 +193,7 @@ void Debugger::step()
b != 'b' && // set breakpoint
b != 'd' && // show disassembly
b != 'L' && // load memory (lines)
b != 'D' && // dump memory
b != 'h' && // show history
b != '*' // show memory (byte)
);
@ -276,6 +300,31 @@ void Debugger::step()
}
}
goto doover;
case 'D': // Dump memory. Use "D 0x<address> 0x<length>\n"
{
unsigned int val2;
GETLN;
if (getTwoAddresses(buf, &val, &val2)) {
sprintf(buf, "Memory dump at 0x%X, length 0x%X:\r\n", val, val2);
write(cd, buf, strlen(buf));
for (uint32_t i=val; i<val+val2; i+=16) {
sprintf(buf, "$%.4X ", i);
write(cd, buf, strlen(buf));
for (uint8_t j=0; j<16 && (i+j)<(val+val2); j++) {
uint8_t v = g_vm->getMMU()->read(i+j);
sprintf(buf, "%.2X ", v);
write(cd, buf, strlen(buf));
}
sprintf(buf, "\r\n");
write(cd, buf, strlen(buf));
}
} else {
sprintf(buf, "Syntax error\12\15");
write(cd, buf, strlen(buf));
}
}
goto doover;
case '*': // read 1 byte of memory. Use '* 0x<address>'
{