Move string.S to the lib directory

It was weird enough to have it in the 'kernel' directory, as it's way
more fitting to have it on 'lib'.

Signed-off-by: Miquel Sabaté Solà <mikisabate@gmail.com>

1 files changed, 0 insertions, 97 deletions

diff --git a/kernel/string.S b/kernel/string.S
deleted file mode 100644
index 271e8f3..0000000
--- a/kernel/string.S
+++ /dev/null
@@ -1,97 +0,0 @@
-/*
- * Defined in include/fbos/string.h
- *
- *     size_t strlen(const char *str)
- *
- * Returns (a0): string length.
- * Parameter (a0): string to measure.
- * Clobbers: t0, t1.
- */
-.globl strlen
-.type strlen, @function
-strlen:
-	mv t1, a0
-1:
-	lbu t0, 0(t1)
-	beqz t0, 2f
-	addi t1, t1, 1
-	j 1b
-2:
-	sub a0, t1, a0
-	ret
-
-/*
- * Defined in include/fbos/string.h
- *
- *     int strcmp(const char *s1, const char *s2)
- *
- * Returns (a0): comparison result as in stdlib.
- * Parameter (a0, a1): strings to compare.
- * Clobbers: t0, t1.
- */
-.globl strcmp
-.type strcmp, @function
-strcmp:
-1:
-	lbu t0, 0(a0)
-	lbu t1, 0(a1)
-	addi a0, a0, 1
-	addi a1, a1, 1
-	bne t0, t1, 2f
-	bnez t0, 1b
-	li a0, 0
-	ret
-2:
-	sub a0, t0, t1
-	ret
-
-/*
- * Defined in include/fbos/string.h
- *
- *     int memcmp(const void *ptr1, const void *ptr2, size_t n)
- *
- * Returns (a0): comparison result as in stdlib.
- * Parameters (a0, a1): strings to compare.
- * Clobbers: t0, t1.
- */
-.global memcmp
-.type memcmp, @function
-memcmp:
-1:
-	lbu t0, 0(a0)
-	lbu t1, 0(a1)
-	bne t0, t1, 2f
-	addi a0, a0, 1
-	addi a1, a1, 1
-	addi a2, a2, -1
-	bnez a2, 1b
-	li a0, 0
-	ret
-2:
-	sub a0, t0, t1
-	ret
-
-/*
- * Defined in include/fbos/string.h
- *
- *     void memcpy(const void *dest, const void *src, size_t count)
- *
- * Parameter a0: destination string.
- * Parameter a1: source string.
- * Parameter a2: number of bytes to copy.
- * Clobbers: t0.
- */
-.global memcpy
-.type memcpy, @function
-memcpy:
-1:
-	beqz a2, 3f
-2:
-	lbu t0, 0(a1)
-	sb t0, 0(a0)
-	addi a0, a0, 1
-	addi a1, a1, 1
-	addi a2, a2, -1
-	bnez a2, 2b
-3:
-	ret