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lib/vsprintf: Deduplicate special hex number specifier data 

Two functions use the same specifier data for the special hex number.
Almost the same as the field width is calculated on the size of the
given type. Due to that, make a compound literal macro in order to
deduplicate the rest.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Tested-by: Petr Mladek <pmladek@suse.com>
Link: https://patch.msgid.link/20251113150313.3030700-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Petr Mladek <pmladek@suse.com>
This commit is contained in:
Andy Shevchenko 2025-11-13 16:02:59 +01:00 committed by Petr Mladek
parent 372a12bd5d
commit 376c18f30e
1 changed files with 10 additions and 16 deletions
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26
lib/vsprintf.c
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@ -582,17 +582,18 @@ char *number(char *buf, char *end, unsigned long long num,
return buf;
}
#define special_hex_spec(size) \
(struct printf_spec) { \
.field_width = 2 + 2 * (size), /* 0x + hex */ \
.flags = SPECIAL | SMALL | ZEROPAD, \
.base = 16, \
.precision = -1, \
}
static noinline_for_stack
char *special_hex_number(char *buf, char *end, unsigned long long num, int size)
{
struct printf_spec spec;
spec.field_width = 2 + 2 * size; /* 0x + hex */
spec.flags = SPECIAL | SMALL | ZEROPAD;
spec.base = 16;
spec.precision = -1;
return number(buf, end, num, spec);
return number(buf, end, num, special_hex_spec(size));
}
static void move_right(char *buf, char *end, unsigned len, unsigned spaces)
@ -1164,18 +1165,11 @@ char *range_string(char *buf, char *end, const struct range *range,
char sym[sizeof("[range 0x0123456789abcdef-0x0123456789abcdef]")];
char *p = sym, *pend = sym + sizeof(sym);
struct printf_spec range_spec = {
.field_width = 2 + 2 * sizeof(range->start), /* 0x + 2 * 8 */
.flags = SPECIAL | SMALL | ZEROPAD,
.base = 16,
.precision = -1,
};
if (check_pointer(&buf, end, range, spec))
return buf;
p = string_nocheck(p, pend, "[range ", default_str_spec);
p = hex_range(p, pend, range->start, range->end, range_spec);
p = hex_range(p, pend, range->start, range->end, special_hex_spec(sizeof(range->start)));
*p++ = ']';
*p = '\0';