void hexprint(FILE *f, const struct msr val, const uint8_t bits) {
if (bits <= 4)
- fprintf(f, "0x%x", (uint8_t)(val.lo & 0x0f));
+ fprintf(f, "0x%01x", val.lo & 0xf);
else if (bits <= 8)
- fprintf(f, "0x%02x", (uint8_t)(val.lo & 0xff));
+ fprintf(f, "0x%02x", val.lo & 0xff);
+ else if (bits <= 12)
+ fprintf(f, "0x%03x", val.lo & 0xfff);
else if (bits <= 16)
- fprintf(f, "0x%04x", (uint16_t)(val.lo & 0xffff));
+ fprintf(f, "0x%04x", val.lo & 0xffff);
+ else if (bits <= 20)
+ fprintf(f, "0x%05x", val.lo & 0xfffff);
+ else if (bits <= 24)
+ fprintf(f, "0x%06x", val.lo & 0xffffff);
+ else if (bits <= 28)
+ fprintf(f, "0x%07x", val.lo & 0xfffffff);
else if (bits <= 32)
fprintf(f, "0x%08x", val.lo);
+ else if (bits <= 36)
+ fprintf(f, "0x%01x%08x", val.hi & 0xf, val.lo);
+ else if (bits <= 40)
+ fprintf(f, "0x%02x%08x", val.hi & 0xff, val.lo);
+ else if (bits <= 44)
+ fprintf(f, "0x%03x%08x", val.hi & 0xfff, val.lo);
+ else if (bits <= 48)
+ fprintf(f, "0x%04x%08x", val.hi & 0xffff, val.lo);
+ else if (bits <= 52)
+ fprintf(f, "0x%05x%08x", val.hi & 0xfffff, val.lo);
+ else if (bits <= 56)
+ fprintf(f, "0x%06x%08x", val.hi & 0xffffff, val.lo);
+ else if (bits <= 60)
+ fprintf(f, "0x%07x%08x", val.hi & 0xfffffff, val.lo);
else
fprintf(f, "0x%08x%08x", val.hi, val.lo);
}
* Parse a hexadecimal string into an MSR value.
*
* Leading 0x or 0X is optional, the string is always parsed as hexadecimal.
- * Any non-hexadecimal character can be used to separate the high 32 bits and
+ * Any non-hexadecimal character except ' ' can separate the high 32 bits and
* the low 32 bits. If there is such a separator, high and low values do not
* need to be zero padded. If there is no separator, the last <=8 digits are
* the low 32 bits and any characters before them are the high 32 bits.
* @param str The string to parse. The string must be writable but will be
* restored before return.
* @param msr Pointer to the struct msr where the value will be stored.
+ * @param endptr If endptr is not NULL, *endptr will point to after the MSR.
* @return 1 on success, 0 on parse failure. msr is unchanged on failure.
*/
-uint8_t str2msr(char *str, struct msr *msr) {
+uint8_t str2msr(char *str, struct msr *msr, char **endptr) {
char c;
size_t len, lo;
if (0 == strncmp(str, "0x", 2) || 0 == strncmp(str, "0X", 2))
str += 2;
len = strspn(str, HEXCHARS);
- if (len <= 8 && 0 == str[len]) {
+ if (len <= 8 && (0 == str[len] || ' ' == str[len])) {
msr->hi = 0;
lo = 0;
} else if (len <= 8) {
msr->hi = strtoul(str, NULL, 16);
str[lo] = c;
}
- msr->lo = strtoul(str + lo, NULL, 16);
+ msr->lo = strtoul(str + lo, endptr, 16);
return 1;
}