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efi_selftest: enable printing hexadecimal numbers

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Add code to use %x in efi_st_print().

Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
This commit is contained in:
Heinrich Schuchardt 2020-10-03 13:12:03 +02:00
parent e2aff337ed
commit 9487683821
1 changed files with 22 additions and 13 deletions
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23
lib/efi_selftest/efi_selftest_console.c
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@ -44,26 +44,29 @@ static void mac(void *pointer, u16 **buf)
}
/*
* Print a pointer to an u16 string
* printx() - print hexadecimal number to an u16 string
*
* @pointer: pointer
* @buf: pointer to buffer address
* @prec: minimum number of digits to print
* @buf: pointer to buffer address,
* on return position of terminating zero word
* @size: size of value to be printed in bytes
*/
static void pointer(void *pointer, u16 **buf)
static void printx(u64 p, int prec, u16 **buf)
{
int i;
u16 c;
uintptr_t p = (uintptr_t)pointer;
u16 *pos = *buf;
for (i = 8 * sizeof(p) - 4; i >= 0; i -= 4) {
c = (p >> i) & 0x0f;
for (i = 2 * sizeof(p) - 1; i >= 0; --i) {
c = (p >> (4 * i)) & 0x0f;
if (c || pos != *buf || !i || i < prec) {
c += '0';
if (c > '9')
c += 'a' - '9' - 1;
*pos++ = c;
}
}
*pos = 0;
*buf = pos;
}
@ -212,7 +215,9 @@ void efi_st_printc(int color, const char *fmt, ...)
break;
default:
--c;
pointer(va_arg(args, void*), &pos);
printx((uintptr_t)va_arg(args, void *),
2 * sizeof(void *), &pos);
break;
}
break;
case 's':
@ -223,6 +228,10 @@ void efi_st_printc(int color, const char *fmt, ...)
case 'u':
uint2dec(va_arg(args, u32), prec, &pos);
break;
case 'x':
printx((u64)va_arg(args, unsigned int),
prec, &pos);
break;
default:
break;
}