printf: Add padding support for %d, %i, %u, %x, %X

src/console.asm

@@ -71,6 +71,8 @@ puts:
 ;	%X	Unsigned integer, printed as hexadecimal number (uppercase)
 ;	%b	Unsigned integer, printed as binary number
 ;	%s	String
+;	%N*	Pad left, N chars (maximum 64). Supported *: d, i, u, x, X, b
+;	*0N*	Pad left with zeroes, N chars (maximum 64). Supported *: d, i, u, x, X, b
 ; <!> Unsupported specifiers are printed as-is
 ; <!> For all specifiers (except %%) an argument is expected. Mismatch between arguments given and specifiers provided will lead to issues
 ; Used registers:
@@ -236,13 +238,16 @@ printf:
 		.rep_d:
 			load_arg rsi
 			push_regs
+		mov	rdx, r13
 		cmp	byte [rdi + 1], 'u'
 		je	.callUINT2STR
 		mov	rdi, rsi
+		mov	rsi, r12
 		call	dec2str
 		jmp	.loadConvertedStr
 		.callUINT2STR:
 		mov	rdi, rsi
+		mov	rsi, r12
 		call	udec2str
 		.loadConvertedStr:
 		mov	rsi, rax
@@ -261,8 +266,12 @@ printf:
 		push	rax
 		push	rdx
 		push	r9
+		push	r10
+		mov	rdx, r12
+		mov	rcx, r13
 		call	hex2str
 		mov	rsi, rax
+		pop	r10
 		pop	r9
 		pop	rdx
 		pop	rax