From 041cdc2769407c4d3869b218ad7ee7638e1c306e Mon Sep 17 00:00:00 2001
From: Waldemar Brodkorb <wbx@openadk.org>
Date: Wed, 24 May 2017 20:49:02 +0200
Subject: sparc64: add basic support

No NPTL, no LDSO support.
Bootup with Busybox Ash in Qemu working.
Testuite shows only two failures, but mksh continue/break
support doesn't work.
---
 libc/sysdeps/linux/sparc64/fork.S | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 libc/sysdeps/linux/sparc64/fork.S

(limited to 'libc/sysdeps/linux/sparc64/fork.S')

diff --git a/libc/sysdeps/linux/sparc64/fork.S b/libc/sysdeps/linux/sparc64/fork.S
new file mode 100644
index 000000000..55c5e8d5c
--- /dev/null
+++ b/libc/sysdeps/linux/sparc64/fork.S
@@ -0,0 +1,32 @@
+/*
+ * The fork and vfork system calls are special on sparc64:
+ * they return the "other process" pid in %o0 and the
+ * "is child" flag in %o1
+ */
+
+#include <features.h>
+#include <sys/syscall.h>
+
+.text
+.global	fork
+.type 	fork, @function
+.align 4
+
+fork:
+	mov	__NR_fork, %g1
+	ta	0x6d
+	sub	%o1, 1, %o1
+	bcc,pt	%xcc, 1f
+	  and	%o0, %o1, %o0
+	sethi	%hi(errno), %g4
+	or	%g4, %lo(errno), %g4
+	st	%o0, [%g4]
+	retl
+	  mov	-1, %o0
+1:
+       	retl
+	  nop
+
+.size fork, . - fork
+
+libc_hidden_def(fork)
-- 
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