1 files changed, 23 insertions, 0 deletions
diff --git a/usr/klibc/arch/x86_64/sysstub.ph b/usr/klibc/arch/x86_64/sysstub.ph
new file mode 100644
index 0000000..e2d797b
--- /dev/null
+++ b/usr/klibc/arch/x86_64/sysstub.ph
@@ -0,0 +1,23 @@
+# -*- perl -*-
+#
+# arch/x86_64/sysstub.ph
+#
+# Script to generate system call stubs
+#
+
+sub make_sysstub($$$$$@) {
+    my($outputdir, $fname, $type, $sname, $stype, @args) = @_;
+
+    open(OUT, '>', "${outputdir}/${fname}.S");
+    print OUT "#include <asm/unistd.h>\n";
+    print OUT "\n";
+    print OUT "\t.type ${fname},\@function\n";
+    print OUT "\t.globl ${fname}\n";
+    print OUT "${fname}:\n";
+    print OUT "\tmovl \$__NR_${sname},%eax\n"; # Zero-extends to 64 bits
+    print OUT "\tjmp __syscall_common\n";
+    print OUT "\t.size ${fname},.-${fname}\n";
+    close(OUT);
+}
+
+1;