Add bin/true and bin/false implementations

- Added assembly implementations for `true` and `false` commands.
- Updated Kbuild files to include new binaries.
- Removed unused libraries and headers.
- Cleaned up makefile and unused code.

5 files changed, 20 insertions, 8 deletions

diff --git a/lib/libc/strings/Kbuild b/lib/libc/strings/Kbuild
new file mode 100644
index 00000000..0f22da20
--- /dev/null
+++ b/lib/libc/strings/Kbuild
@@ -0,0 +1,5 @@
+obj-y += ffs.o
+obj-y += ffsl.o
+obj-y += ffsll.o
+obj-y += strcasecmp.o
+obj-y += strncasecmp.o
diff --git a/lib/libc/strings/ffs.c b/lib/libc/strings/ffs.c
index 3b836021..2c49cf4d 100644
--- a/lib/libc/strings/ffs.c
+++ b/lib/libc/strings/ffs.c
@@ -1,7 +1,8 @@
 int ffs(int i)
 {
-	if (i == 0)
+	if (i == 0) {
 		return 0;
+	}
 
 	int pos = 1;
 	unsigned int u = (unsigned int)i;
@@ -10,5 +11,6 @@ int ffs(int i)
 		u >>= 1;
 		pos++;
 	}
+
 	return pos;
 }
diff --git a/lib/libc/strings/ffsl.c b/lib/libc/strings/ffsl.c
index 2f2e7d44..c84a2905 100644
--- a/lib/libc/strings/ffsl.c
+++ b/lib/libc/strings/ffsl.c
@@ -1,14 +1,18 @@
 int ffsl(long i)
 {
-	if (i == 0)
-		return 0;
+	int pos;
+	unsigned long u;
 
-	int pos = 1;
-	unsigned long u = (unsigned long)i;
+	if (i == 0) {
+		return 0;
+	}
 
+	pos = 1;
+	u = (unsigned long)i;
 	while ((u & 1UL) == 0UL) {
 		u >>= 1;
 		pos++;
 	}
+
 	return pos;
 }
diff --git a/lib/libc/strings/strcasecmp.c b/lib/libc/strings/strcasecmp.c
index 90ccc59b..e96f059a 100644
--- a/lib/libc/strings/strcasecmp.c
+++ b/lib/libc/strings/strcasecmp.c
@@ -18,7 +18,8 @@ int strcasecmp(const char *s1, const char *s2)
 	       (unsigned char)tolower((unsigned char)*s2);
 }
 
-weak int strcasecmp_l(const char *s1, const char *s2, locale_t unused locale)
+__weak int strcasecmp_l(const char *s1, const char *s2,
+			locale_t __unused locale)
 {
 	return strcasecmp(s1, s2);
 }
diff --git a/lib/libc/strings/strncasecmp.c b/lib/libc/strings/strncasecmp.c
index 679cf245..f2f4c22c 100644
--- a/lib/libc/strings/strncasecmp.c
+++ b/lib/libc/strings/strncasecmp.c
@@ -25,8 +25,8 @@ int strncasecmp(const char *s1, const char *s2, size_t n)
 	       (unsigned char)tolower((unsigned char)*s2);
 }
 
-weak int strncasecmp_l(const char *s1, const char *s2, size_t n,
-		       locale_t unused locale)
+__weak int strncasecmp_l(const char *s1, const char *s2, size_t n,
+		       locale_t __unused locale)
 {
 	return strncasecmp(s1, s2, n);
 }