printf: Add format specifier %p

src/console.asm

@@ -69,6 +69,8 @@ puts:
 ;	%X	Unsigned integer, printed as hexadecimal number (uppercase)
 ;	%b	Unsigned integer, printed as binary number
 ;	%o	Unsigned integer, printed as octal number
+;	%p	Print pointer, but truly alias for %#x -- this printf/udec processes all arguments as qwords so both %x and %p (and other specifiers) will always print full true value.
+;		That is also why %l/%ll is not supported - it's not needed.
 ;	%s	String
 ;	%#{x}	Use prefix for printed number (non-decimal). Supported specifiers: x, X, b, o. Works in combination with width specifier (see below)
 ;	%[#]n*	Pad left, n chars (maximum 64). Supported specifiers: d, i, u, x, X, b, o
@@ -281,6 +283,8 @@ printf:
 		je	.rep_b
 		cmp	byte [rdi + 1], 'o'
 		je	.rep_o
+		cmp	byte [rdi + 1], 'p'
+		je	.rep_p
 		cmp	byte [rdi + 1], 's'
 		je	.rep_s
 
@@ -329,6 +333,11 @@ printf:
 		.rep_o:
 			process_arg 8, 0, utoa
 
+		;--- '%p' ---;
+		.rep_p:
+		mov	r15, 1 ;always force prefix, no matter if %p or %#p was used. Do not override padding though
+			process_arg 16, 0, utoa
+
 		;--- '%s' ---;
 		.rep_s:
 			load_arg rsi