import different optimized versions of div funcs based upon target sparc arch

5 files changed, 77 insertions, 0 deletions

diff --git a/libc/sysdeps/linux/sparc/sparcv8/rem.S b/libc/sysdeps/linux/sparc/sparcv8/rem.S
new file mode 100644
index 000000000..c4faebe88
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv8/rem.S
@@ -0,0 +1,19 @@
+/*
+ * Sparc v8 has divide.
+ */
+
+ENTRY(.rem)
+
+	sra	%o0, 31, %o2
+	wr	%o2, 0, %y
+	nop
+	nop
+	nop
+	sdivcc	%o0, %o1, %o2
+	bvs,a	1f
+	 xnor	%o2, %g0, %o2
+1:	smul	%o2, %o1, %o2
+	retl
+	 sub	%o0, %o2, %o0
+
+END(.rem)
diff --git a/libc/sysdeps/linux/sparc/sparcv8/sdiv.S b/libc/sysdeps/linux/sparc/sparcv8/sdiv.S
new file mode 100644
index 000000000..4ac901a77
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv8/sdiv.S
@@ -0,0 +1,18 @@
+/*
+ * Sparc v8 has divide.
+ */
+
+ENTRY(.div)
+
+	sra	%o0, 31, %o2
+	wr	%o2, 0, %y
+	nop
+	nop
+	nop
+	sdivcc	%o0, %o1, %o0
+	bvs,a	1f
+	 xnor	%o0, %g0, %o0
+1:	retl
+	 nop
+
+END(.div)
diff --git a/libc/sysdeps/linux/sparc/sparcv8/udiv.S b/libc/sysdeps/linux/sparc/sparcv8/udiv.S
new file mode 100644
index 000000000..d5d93bb8f
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv8/udiv.S
@@ -0,0 +1,13 @@
+/*
+ * Sparc v8 has divide.
+ */
+
+ENTRY(.udiv)
+
+	wr	%g0, 0, %y
+	nop
+	nop
+	retl
+	 udiv	%o0, %o1, %o0
+
+END(.udiv)
diff --git a/libc/sysdeps/linux/sparc/sparcv8/umul.S b/libc/sysdeps/linux/sparc/sparcv8/umul.S
new file mode 100644
index 000000000..47b98e9ca
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv8/umul.S
@@ -0,0 +1,11 @@
+/*
+ * Sparc v8 has multiply.
+ */
+
+ENTRY(.umul)
+
+	umul	%o0, %o1, %o0
+	retl
+	 rd	%y, %o1
+
+END(.umul)
diff --git a/libc/sysdeps/linux/sparc/sparcv8/urem.S b/libc/sysdeps/linux/sparc/sparcv8/urem.S
new file mode 100644
index 000000000..0e96246f5
--- /dev/null
+++ b/libc/sysdeps/linux/sparc/sparcv8/urem.S
@@ -0,0 +1,16 @@
+/*
+ * Sparc v8 has divide.
+ */
+
+ENTRY(.urem)
+
+	wr	%g0, 0, %y
+	nop
+	nop
+	nop
+	udiv	%o0, %o1, %o2
+	umul	%o2, %o1, %o2
+	retl
+	 sub	%o0, %o2, %o0
+
+END(.urem)