From 40bda56596d46c65d3d2a37e96f1b5313ad9fe57 Mon Sep 17 00:00:00 2001
From: Teddy <ted.sybil@gmail.com>
Date: Sun, 4 May 2014 12:25:38 +0800
Subject: ...

---
 lib.s    | 145 ++++++++++++++++++++++++++++-----------------------------------
 printf.c |   4 +-
 2 files changed, 66 insertions(+), 83 deletions(-)

diff --git a/lib.s b/lib.s
index f97ebc9..7c025b5 100644
--- a/lib.s
+++ b/lib.s
@@ -1,149 +1,132 @@
 _func_printf:
 	addiu $sp, $sp, -64
 	sw $31, 60($sp) #printf
-# load fmt_0
+# load pos_0
 # load arg_0
 # load ch_0
 	lb $8, 12($sp)	#ch
+# load fmt_0
+	lw $9, 64($sp)	#fmt
 # load x_0
-	lw $9, 4($sp)	#x
+	lw $10, 4($sp)	#x
 # load len_0
-	lw $10, 8($sp)	#len
-# t0 = addr fmt_0
-	addiu $11, $sp, 64
-# arg_1 = t0 + 4
-	addiu $11, $11, 4
+	lw $11, 8($sp)	#len
+# arg_1 = addr pos_0
+	addiu $12, $sp, 68
 # goto __L2
 	j __L2
 __L1:
-# t3 = ch_2 == 37
+# t2 = ch_2 == 37
 	li $3, 37
-	seq $12, $8, $3
-# if not (t3) goto __L20
-	beqz $12, __L20
+	seq $13, $8, $3
+# if not (t2) goto __L20
+	beqz $13, __L20
 # fmt_4 = fmt_1 + 1
-	lw $2, 64($sp)	#fmt
-	addiu $2, $2, 1
-	sw $2, 64($sp)	#fmt
+	addiu $9, $9, 1
 # ch_4 = fmt_4[0]
-	lw $2, 64($sp)	#fmt
-	lb $8, 0($2)
-# t5 = ch_4 == 100
+	lb $8, 0($9)
+# t4 = ch_4 == 100
 	li $3, 100
-	seq $12, $8, $3
-# if not (t5) goto __L6
-	beqz $12, __L6
-# t7 = arg_2[0]
-	lw $12, 0($11)
-# push t7
-	sw $12, 0($sp) # push
-# t6 = call __print_int
-	jal _func___print_int
+	seq $13, $8, $3
+# if not (t4) goto __L6
+	beqz $13, __L6
+# t6 = arg_2[0]
+	lw $a0, 0($12)
+    li $2, 1
+    syscall
 # goto __L19
 	j __L19
 __L6:
-# t8 = ch_4 == 99
+# t7 = ch_4 == 99
 	li $3, 99
-	seq $12, $8, $3
-# if not (t8) goto __L8
-	beqz $12, __L8
-# t10 = arg_2[0]
-	lw $12, 0($11)
-# push t10
-	sw $12, 0($sp) # push
-# t9 = call __print_char
-	jal _func___print_char
+	seq $13, $8, $3
+# if not (t7) goto __L8
+	beqz $13, __L8
+# t9 = arg_2[0]
+	lw $a0, 0($12)
+    li $2, 11
+    syscall
 # goto __L19
 	j __L19
 __L8:
-# t11 = ch_4 == 115
+# t10 = ch_4 == 115
 	li $3, 115
-	seq $12, $8, $3
-# if not (t11) goto __L10
-	beqz $12, __L10
-# t13 = arg_2[0]
-	lw $12, 0($11)
-# push t13
-	sw $12, 0($sp) # push
-# t12 = call __print_string
-	jal _func___print_string
+	seq $13, $8, $3
+# if not (t10) goto __L10
+	beqz $13, __L10
+# t12 = arg_2[0]
+	lw $a0, 0($12)
+    li $2, 4
+    syscall
 # goto __L19
 	j __L19
 __L10:
 # x_4 = arg_2[0]
-	lw $9, 0($11)
-# t15 = x_4 == 0
+	lw $10, 0($12)
+# t14 = x_4 == 0
 	li $3, 0
-	seq $10, $9, $3
-# if not (t15) goto __L12
-	beqz $10, __L12
+	seq $11, $10, $3
+# if not (t14) goto __L12
+	beqz $11, __L12
 # len_11 = 1
 	li $2, 1
-	move $10 $2
+	move $11 $2
 # goto __L15
 	j __L15
 __L12:
 # len_8 = 0
 	li $2, 0
-	move $10 $2
+	move $11 $2
 # goto __L14
 	j __L14
 __L13:
 # x_7 = x_6 / 10
 	li $3, 10
-	divu $9, $9, $3
+	divu $10, $10, $3
 # len_10 = len_9 + 1
-	addiu $10, $10, 1
+	addiu $11, $11, 1
 __L14:
 # if (x_6) goto __L13
-	bnez $9, __L13
+	bnez $10, __L13
 __L15:
 # len_5 = 4 - len_4
 	li $2, 4
-	subu $10, $2, $10
+	subu $11, $2, $11
 # goto __L17
 	j __L17
 __L16:
 # push 48
-	li $2, 48
-	sw $2, 0($sp) # push
-# t17 = call __print_char
-	jal _func___print_char
+	li $a0 48
+    li $2, 11
+    syscall
 # len_7 = len_6 - 1
 	li $3, 1
-	subu $10, $10, $3
+	subu $11, $11, $3
 __L17:
 # if (len_6) goto __L16
-	bnez $10, __L16
-# t19 = arg_2[0]
-	lw $12, 0($11)
-# push t19
-	sw $12, 0($sp) # push
-# t18 = call __print_int
-	jal _func___print_int
+	bnez $11, __L16
+# t18 = arg_2[0]
+	lw $a0, 0($12)
+    li $2, 1
+    syscall
 # fmt_6 = fmt_4 + 2
-	lw $2, 64($sp)	#fmt
-	addiu $2, $2, 2
-	sw $2, 64($sp)	#fmt
+	addiu $9, $9, 2
 __L19:
 # arg_4 = arg_2 + 4
-	addiu $11, $11, 4
+	addiu $12, $12, 4
 # goto __L21
 	j __L21
 __L20:
 # push ch_2
-	sw $8, 0($sp) # push
-# t20 = call __print_char
-	jal _func___print_char
+    move $a0, $8
+    li $2, 11
+    syscall
 __L21:
 # fmt_3 = fmt_2 + 1
-	lw $2, 64($sp)	#fmt
-	addiu $2, $2, 1
-	sw $2, 64($sp)	#fmt
+	addiu $9, $9, 1
 __L2:
 # ch_2 = fmt_1[0]
-	lw $2, 64($sp)	#fmt
-	lb $8, 0($2)
+	lb $8, 0($9)
 # if (ch_2) goto __L1
 	bnez $8, __L1
 _ret_printf:
diff --git a/printf.c b/printf.c
index 6d3330b..b34ade1 100644
--- a/printf.c
+++ b/printf.c
@@ -1,7 +1,7 @@
-int printf(char *fmt) {
+int printf(char *fmt, int pos) {
     char *arg, ch;
     int len, x;
-    arg = (int)&fmt + sizeof(char*);
+    arg = (int)&pos;
     while ((ch = *fmt))
     {
         if (ch == '%')
-- 
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