Adds basic printf() (currently only support '%%')

src/tests.asm

@@ -5,6 +5,7 @@ extern	exit
 ; console.asm
 extern	print
 extern	puts
+extern	printf
 ; string.asm
 extern	strlen
 extern	strcpy
@@ -14,6 +15,7 @@ extern	strcat
 section .rodata
 	TEST_print		equ	1
 	TEST_puts		equ	1
+	TEST_printf		equ	1
 	TEST_strlen		equ	1
 	TEST_strcpy		equ	1
 	TEST_strcat		equ	1
@@ -30,6 +32,11 @@ section .rodata
 	; puts()
 	msgPuts			db	"TEST puts()",EOS
 
+	; printf()
+	msgPrintf		db	"TEST printf()",NL,EOS
+	printf1			db	TAB,"printf(",DQUO,"He%ll%o there%%%%%!%s%!%\n",DQUO,"): ",NL,TAB,TAB,EOS
+	printf1Str		db	"He%ll%o there%%%%%!%s%!%",NL,EOS
+
 	; strlen()
 	strlenStr1		db	"Hello",EOS
 	strlenStr2		db	"Hello, world!",NL,EOS
@@ -75,6 +82,20 @@ _start:
 	call	puts
 %endif
 
+;---
+;--- printf()
+;---
+%if TEST_printf
+	lea	rdi, [rel msgPrintf]
+	call	printf
+
+	; TEST 1
+	lea	rdi, [rel printf1]
+	call	print
+	lea	rdi, [rel printf1Str]
+	call	printf
+%endif
+
 ;---
 ;--- strlen()
 ;---