[Feature] add GA346 baseline version
Change-Id: Ic62933698569507dcf98240cdf5d9931ae34348f
diff --git a/src/kernel/linux/v4.19/arch/sparc/lib/fls64.S b/src/kernel/linux/v4.19/arch/sparc/lib/fls64.S
new file mode 100644
index 0000000..c83e22a
--- /dev/null
+++ b/src/kernel/linux/v4.19/arch/sparc/lib/fls64.S
@@ -0,0 +1,61 @@
+/* fls64.S: SPARC default __fls definition.
+ *
+ * SPARC default __fls definition, which follows the same algorithm as
+ * in generic __fls(). This function will be boot time patched on T4
+ * and onward.
+ */
+
+#include <linux/linkage.h>
+#include <asm/export.h>
+
+ .text
+ .register %g2, #scratch
+ .register %g3, #scratch
+ENTRY(__fls)
+ mov -1, %g2
+ sllx %g2, 32, %g2
+ and %o0, %g2, %g2
+ brnz,pt %g2, 1f
+ mov 63, %g1
+ sllx %o0, 32, %o0
+ mov 31, %g1
+1:
+ mov -1, %g2
+ sllx %g2, 48, %g2
+ and %o0, %g2, %g2
+ brnz,pt %g2, 2f
+ mov -1, %g2
+ sllx %o0, 16, %o0
+ add %g1, -16, %g1
+2:
+ mov -1, %g2
+ sllx %g2, 56, %g2
+ and %o0, %g2, %g2
+ brnz,pt %g2, 3f
+ mov -1, %g2
+ sllx %o0, 8, %o0
+ add %g1, -8, %g1
+3:
+ sllx %g2, 60, %g2
+ and %o0, %g2, %g2
+ brnz,pt %g2, 4f
+ mov -1, %g2
+ sllx %o0, 4, %o0
+ add %g1, -4, %g1
+4:
+ sllx %g2, 62, %g2
+ and %o0, %g2, %g2
+ brnz,pt %g2, 5f
+ mov -1, %g3
+ sllx %o0, 2, %o0
+ add %g1, -2, %g1
+5:
+ mov 0, %g2
+ sllx %g3, 63, %g3
+ and %o0, %g3, %o0
+ movre %o0, 1, %g2
+ sub %g1, %g2, %g1
+ jmp %o7+8
+ sra %g1, 0, %o0
+ENDPROC(__fls)
+EXPORT_SYMBOL(__fls)