From: Dejan Latinovic <Dejan.Latinovic@imgtec.com>
Date: Thu, 5 Mar 2015 16:51:44 -0800
Subject: [PATCH 2/3] add-mips64-support-arch-mips32
Origin: https://git.kernel.org/cgit/libs/klibc/klibc.git/commit/?id=ccd50880175e79fb9bc544c96d72b8971303cc0a

Description: Add mips64 support, using existing mips32 code.
 - using mips32 assembler source files: pipe.S vfork.S syscall.S
 - sysstub.ph: copied over from klibc/arch/mips
---
 usr/klibc/arch/mips64/Kbuild     | 11 +++++++++++
 usr/klibc/arch/mips64/sysstub.ph | 29 +++++++++++++++++++++++++++++
 2 files changed, 40 insertions(+)
 create mode 100644 usr/klibc/arch/mips64/sysstub.ph

diff --git a/usr/klibc/arch/mips64/Kbuild b/usr/klibc/arch/mips64/Kbuild
index 970c0f8..6fe3b53 100644
--- a/usr/klibc/arch/mips64/Kbuild
+++ b/usr/klibc/arch/mips64/Kbuild
@@ -1,3 +1,14 @@
 #
 # klibc files for mips64
 #
+
+klib-y := ../mips/pipe.o ../mips/vfork.o setjmp.o ../mips/syscall.o
+
+klib-y += ../../libgcc/__clzsi2.o     ../../libgcc/__ashldi3.o
+klib-y += ../../libgcc/__ashrdi3.o    ../../libgcc/__lshrdi3.o
+klib-y += ../../libgcc/__divdi3.o     ../../libgcc/__moddi3.o
+klib-y += ../../libgcc/__udivdi3.o    ../../libgcc/__umoddi3.o
+klib-y += ../../libgcc/__udivmoddi4.o
+
+always  := crt0.o
+targets := crt0.o
diff --git a/usr/klibc/arch/mips64/sysstub.ph b/usr/klibc/arch/mips64/sysstub.ph
new file mode 100644
index 0000000..e8a0200
--- /dev/null
+++ b/usr/klibc/arch/mips64/sysstub.ph
@@ -0,0 +1,29 @@
+# -*- perl -*-
+#
+# arch/mips64/sysstub.ph
+#
+# Script to generate system call stubs
+#
+
+# On MIPS, most system calls follow the standard convention, with the
+# system call number in r0 (v0), return an error value in r19 (a3) as
+# well as the return value in r0 (v0).
+
+sub make_sysstub($$$$$@) {
+    my($outputdir, $fname, $type, $sname, $stype, @args) = @_;
+
+    $stype = $stype || 'common';
+    open(OUT, '>', "${outputdir}/${fname}.S");
+    print OUT "#include <machine/asm.h>\n";
+    print OUT "#include <asm/unistd.h>\n";
+    print OUT "\n";
+    print OUT "\t.set noreorder\n";
+    print OUT "\n";
+    print OUT "LEAF(${fname})\n";
+    print OUT "\tj\t__syscall_${stype}\n";
+    print OUT "\t  li\tv0, __NR_${sname}\n";
+    print OUT "\tEND(${fname})\n";
+    close(OUT);
+}
+
+1;
-- 
2.4.5