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Add pve command to print values on any endianness ##print

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This commit is contained in:
pancake 2021-09-27 16:29:01 +02:00
parent e3e64df6f3
commit adbb29f9c2
1 changed files with 47 additions and 1 deletions
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48
libr/core/cmd_print.c
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@ -159,7 +159,7 @@ static const char *help_msg_p[] = {
"ps", "[?][pwz] [len]", "print pascal/wide/zero-terminated strings",
"pt", "[?][dn] [len]", "print different timestamps",
"pu", "[?][w] [len]", "print N url encoded bytes (w=wide)",
"pv", "[?][jh] [mode]", "show variable/pointer/value in memory",
"pv", "[?][ejh] [mode]", "show value of given size (1, 2, 4, 8)",
"pwd", "", "display current working directory",
"px", "[?][owq] [len]", "hexdump of N bytes (o=octal, w=32bit, q=64bit)",
"pz", "[?] [len]", "print zoom view (see pz? for help)",
@ -457,6 +457,7 @@ static const char *help_msg_pv[] = {
"pv2", "", "print 2 bytes in memory",
"pv4", "", "print 4 bytes in memory",
"pv8", "", "print 8 bytes in memory",
"pve", " [1234] ([bsize])", "print value with any endian (1234, ",
"pvz", "", "print value as string (alias for ps)",
NULL
};
@ -2943,6 +2944,20 @@ static bool cmd_print_ph(RCore *core, const char *input) {
return handled_cmd;
}
static ut32 convert(ut8 *data, const char *bo) {
ut32 n = 0;
while (*bo) {
int i = *bo - '0';
if (i < 1 || i > 4) {
break;
}
n <<= 8;
n |= (data[i - 1] & 0xff);
bo++;
}
return n;
}
// XXX blocksize is missing
static void cmd_print_pv(RCore *core, const char *input, bool useBytes) {
const char *stack[] = {
@ -3091,6 +3106,37 @@ static void cmd_print_pv(RCore *core, const char *input, bool useBytes) {
r_core_seek (core, oldAt, false);
break;
}
case 'e': // "pve"
{
ut32 n = 0;
ut8 *p = (ut8*)(ut32*)(n);
int size = 4; // default is 4.. or asm.bits?
const char *byteorder = r_config_get_b (core->config, "cfg.bigendian")
? "1234": "4321";
if (strchr (input, ' ')) {
size = atoi (input + 1);
byteorder = r_str_trim_head_ro (input + 2);
} else {
size = strlen (byteorder);
}
int length = size;
char *space = strchr (byteorder, ' ');
if (space) {
length = atoi (space + 1);
}
int i = 0;
ut8 * data = malloc (length + size);
if (data) {
r_io_read_at (core->io, core->offset, data, length + size);
while (i < length) {
ut32 n = convert (data + i, byteorder);
r_cons_printf ("0x%08"PFMT64x" %d (0x%08x)\n", core->offset + i, n, n);
i += size;
}
free (data);
}
}
break;
case '?': // "pv?"
r_core_cmd_help (core, help_msg_pv);
break;