File 0002-kern-Add-X-option-to-printf-functions.patch of Package grub2.16181

From 8c2c35dcc027a77aee48de89093d8770de0a8cf8 Mon Sep 17 00:00:00 2001
From: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
Date: Wed, 22 Jan 2020 12:01:52 +0100
Subject: [PATCH] kern: Add %X option to printf functions

The printf(3) function has support for the %X format specifier, to output
an unsigned hexadecimal integer in uppercase.

This can be achived in GRUB using the %x format specifier in grub_printf()
and calling grub_toupper(), but it is more convenient if there is support
for %X in grub_printf().

Signed-off-by: Paulo Flabiano Smorigo <pfsmorigo@br.ibm.com>
Signed-off-by: Javier Martinez Canillas <javierm@redhat.com>
Reviewed-by: Daniel Kiper <daniel.kiper@oracle.com>
---
 grub-core/kern/misc.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

Index: grub-2.02/grub-core/kern/misc.c
===================================================================
--- grub-2.02.orig/grub-core/kern/misc.c
+++ grub-2.02/grub-core/kern/misc.c
@@ -591,7 +591,7 @@ grub_divmod64 (grub_uint64_t n, grub_uin
 static inline char *
 grub_lltoa (char *str, int c, unsigned long long n)
 {
-  unsigned base = (c == 'x') ? 16 : 10;
+  unsigned base = ((c == 'x') || (c == 'X')) ? 16 : 10;
   char *p;
 
   if ((long long) n < 0 && c == 'd')
@@ -606,7 +606,7 @@ grub_lltoa (char *str, int c, unsigned l
     do
       {
 	unsigned d = (unsigned) (n & 0xf);
-	*p++ = (d > 9) ? d + 'a' - 10 : d + '0';
+	*p++ = (d > 9) ? d + ((c == 'x') ? 'a' : 'A') - 10 : d + '0';
       }
     while (n >>= 4);
   else
@@ -679,6 +679,7 @@ parse_printf_args (const char *fmt0, str
 	{
 	case 'p':
 	case 'x':
+	case 'X':
 	case 'u':
 	case 'd':
 	case 'c':
@@ -765,6 +766,7 @@ parse_printf_args (const char *fmt0, str
       switch (c)
 	{
 	case 'x':
+	case 'X':
 	case 'u':
 	  args->ptr[curn].type = UNSIGNED_INT + longfmt;
 	  break;
@@ -903,6 +905,7 @@ grub_vsnprintf_real (char *str, grub_siz
 	  c = 'x';
 	  /* Fall through. */
 	case 'x':
+	case 'X':
 	case 'u':
 	case 'd':
 	  {