add librariesmips

2 files changed, 255 insertions, 0 deletions

diff --git a/lib.s b/lib.s
new file mode 100644
index 0000000..6e219b0
--- /dev/null
+++ b/lib.s
@@ -0,0 +1,223 @@
+_func_printf:
+	addiu $sp, $sp, -88
+	sw $31, 84($sp) #printf
+# load fmt_0
+# load arg_0
+# load len_0
+# load ch_0
+# load x_0
+# t0 = addr fmt_0
+	addiu $2, $sp, 88
+	sw $2, 80($sp)	#t0
+# arg_1 = t0 + 4
+	lw $2, 80($sp)	#t0
+	addiu $2, $2, 4
+	sw $2, 16($sp)	#arg
+# goto __L2
+	j __L2
+__L1:
+# t3 = ch_2 == 37
+	lb $2, 12($sp)	#ch
+	li $3, 37
+	seq $2, $2, $3
+	sw $2, 76($sp)	#t3
+# if not (t3) goto __L20
+	lw $2, 76($sp)	#t3
+	beqz $2, __L20
+# fmt_4 = fmt_1 + 1
+	lw $2, 88($sp)	#fmt
+	addiu $2, $2, 1
+	sw $2, 88($sp)	#fmt
+# ch_4 = fmt_4[0]
+	lw $2, 88($sp)	#fmt
+	lb $3, 0($2)
+	sb $3, 12($sp)	#ch
+# t5 = ch_4 == 100
+	lb $2, 12($sp)	#ch
+	li $3, 100
+	seq $2, $2, $3
+	sw $2, 72($sp)	#t5
+# if not (t5) goto __L6
+	lw $2, 72($sp)	#t5
+	beqz $2, __L6
+# t7 = arg_2[0]
+	lw $2, 16($sp)	#arg
+	lw $3, 0($2)
+	sw $3, 68($sp)	#t7
+# push t7
+	lw $2, 68($sp)	#t7
+	sw $2, 0($sp) # push
+# t6 = call __print_int
+	jal _func___print_int
+	sw $2, 64($sp)	#t6
+# goto __L19
+	j __L19
+__L6:
+# t8 = ch_4 == 99
+	lb $2, 12($sp)	#ch
+	li $3, 99
+	seq $2, $2, $3
+	sw $2, 60($sp)	#t8
+# if not (t8) goto __L8
+	lw $2, 60($sp)	#t8
+	beqz $2, __L8
+# t10 = arg_2[0]
+	lw $2, 16($sp)	#arg
+	lw $3, 0($2)
+	sb $3, 56($sp)	#t10
+# push t10
+	lb $2, 56($sp)	#t10
+	sw $2, 0($sp) # push
+# t9 = call __print_char
+	jal _func___print_char
+	sw $2, 52($sp)	#t9
+# goto __L19
+	j __L19
+__L8:
+# t11 = ch_4 == 115
+	lb $2, 12($sp)	#ch
+	li $3, 115
+	seq $2, $2, $3
+	sw $2, 48($sp)	#t11
+# if not (t11) goto __L10
+	lw $2, 48($sp)	#t11
+	beqz $2, __L10
+# t13 = arg_2[0]
+	lw $2, 16($sp)	#arg
+	lw $3, 0($2)
+	sw $3, 44($sp)	#t13
+# push t13
+	lw $2, 44($sp)	#t13
+	sw $2, 0($sp) # push
+# t12 = call __print_string
+	jal _func___print_string
+	sw $2, 40($sp)	#t12
+# goto __L19
+	j __L19
+__L10:
+# x_4 = arg_2[0]
+	lw $2, 16($sp)	#arg
+	lw $3, 0($2)
+	sw $3, 4($sp)	#x
+# t15 = x_4 == 0
+	lw $2, 4($sp)	#x
+	li $3, 0
+	seq $2, $2, $3
+	sw $2, 36($sp)	#t15
+# if not (t15) goto __L12
+	lw $2, 36($sp)	#t15
+	beqz $2, __L12
+# len_11 = 1
+	li $2, 1
+	sw $2, 8($sp)	#len
+# goto __L15
+	j __L15
+__L12:
+# len_8 = 0
+	li $2, 0
+	sw $2, 8($sp)	#len
+# goto __L14
+	j __L14
+__L13:
+# x_7 = x_6 / 10
+	lw $2, 4($sp)	#x
+	li $3, 10
+	divu $2, $2, $3
+	sw $2, 4($sp)	#x
+# len_10 = len_9 + 1
+	lw $2, 8($sp)	#len
+	addiu $2, $2, 1
+	sw $2, 8($sp)	#len
+__L14:
+# if (x_6) goto __L13
+	lw $2, 4($sp)	#x
+	bnez $2, __L13
+__L15:
+# len_5 = 4 - len_4
+	li $2, 4
+	lw $3, 8($sp)	#len
+	subu $2, $2, $3
+	sw $2, 8($sp)	#len
+# goto __L17
+	j __L17
+__L16:
+# push 48
+	li $2, 48
+	sw $2, 0($sp) # push
+# t17 = call __print_char
+	jal _func___print_char
+	sw $2, 32($sp)	#t17
+# len_7 = len_6 - 1
+	lw $2, 8($sp)	#len
+	li $3, 1
+	subu $2, $2, $3
+	sw $2, 8($sp)	#len
+__L17:
+# if (len_6) goto __L16
+	lw $2, 8($sp)	#len
+	bnez $2, __L16
+# t19 = arg_2[0]
+	lw $2, 16($sp)	#arg
+	lw $3, 0($2)
+	sw $3, 28($sp)	#t19
+# push t19
+	lw $2, 28($sp)	#t19
+	sw $2, 0($sp) # push
+# t18 = call __print_int
+	jal _func___print_int
+	sw $2, 24($sp)	#t18
+# fmt_6 = fmt_4 + 2
+	lw $2, 88($sp)	#fmt
+	addiu $2, $2, 2
+	sw $2, 88($sp)	#fmt
+__L19:
+# arg_4 = arg_2 + 4
+	lw $2, 16($sp)	#arg
+	addiu $2, $2, 4
+	sw $2, 16($sp)	#arg
+# goto __L21
+	j __L21
+__L20:
+# push ch_2
+	lb $2, 12($sp)	#ch
+	sw $2, 0($sp) # push
+# t20 = call __print_char
+	jal _func___print_char
+	sw $2, 20($sp)	#t20
+__L21:
+# fmt_3 = fmt_2 + 1
+	lw $2, 88($sp)	#fmt
+	addiu $2, $2, 1
+	sw $2, 88($sp)	#fmt
+__L2:
+# ch_2 = fmt_1[0]
+	lw $2, 88($sp)	#fmt
+	lb $3, 0($2)
+	sb $3, 12($sp)	#ch
+# if (ch_2) goto __L1
+	lb $2, 12($sp)	#ch
+	bnez $2, __L1
+_ret_printf:
+	lw $31, 84($sp)
+	addiu $sp, $sp, 88
+	jr $31
+_func___print_int:
+    lw $a0, 0($sp)
+    li $2, 1
+    syscall
+    jr $31
+_func___print_char:
+    lb $a0, 0($sp)
+    li $2, 11
+    syscall
+    jr $31
+_func___print_string:
+    lw $a0, 0($sp)
+    li $2, 4
+    syscall
+    jr $31
+_func_malloc:
+    lw $a0, 0($sp)
+    li $2, 9
+    syscall
+    jr $31
diff --git a/printf.c b/printf.c
new file mode 100644
index 0000000..7c9cf3a
--- /dev/null
+++ b/printf.c
@@ -0,0 +1,32 @@
+int printf(char *fmt) {
+    char *arg, ch;
+    arg = (int)&fmt + sizeof(char*);
+    while ((ch = *fmt))
+    {
+        if (ch == '%')
+        {
+            ch = *(++fmt);
+            if (ch == 'd')
+                __print_int(*(int *)arg);
+            else if (ch == 'c')
+                __print_char(*(char *)arg);
+            else if (ch == 's')
+                __print_string(*(char **)arg);
+            else
+            {
+                int len, x = *(int *)arg;
+                if (!x) len = 1;
+                else
+                    for (len = 0; x; x /= 10, len++);
+                len = 4 - len;
+                while (len) __print_char('0'), len--;
+                __print_int(*(int *)arg);
+                fmt += 2;
+            }
+            arg += 4;
+        }
+        else __print_char(ch);
+        fmt++;
+    }
+}
+