[PATCH] sh: Add PIC implementation for crt1.S

[Peter Griffin]

>From 90f15ce7cd344183086d4d6bf4e406cc06af71f5 Mon Sep 17 00:00:00 2001
From: Peter Griffin <pgriffin at mpc-data.co.uk>
Date: Wed, 29 Apr 2009 11:52:37 +0100
Subject: [PATCH] sh: Add PIC implementation for crt1.S

---
 libc/sysdeps/linux/sh/crt1.S |   45
++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 45 insertions(+), 0 deletions(-)

diff --git a/libc/sysdeps/linux/sh/crt1.S b/libc/sysdeps/linux/sh/crt1.S
index 1c3c544..a68cf8f 100644
--- a/libc/sysdeps/linux/sh/crt1.S
+++ b/libc/sysdeps/linux/sh/crt1.S
@@ -56,6 +56,35 @@ _start:
 	/* Push the stack_end, rtld_fini and fini func onto the stack */
 	mov.l r6, at -r15
 	mov.l r4, at -r15
+
+#ifdef __PIC__
+	mova  L_got, r0
+	mov.l L_got, r12
+	add r0, r12
+
+	mov.l L_fini,r0
+	add r12, r0
+	mov.l r0, at -r15
+
+	/* Set up the main/init funcs that go in registers */
+	mov.l L_main, r4
+	add r12, r4
+	mov.l L_init, r7
+	add r12, r7
+
+	/* __uClibc_main (main, argc, argv, init, fini, rtld_fini, stack_end)
*/
+
+	/* Let the libc call main and exit with its return code.  */
+	mov.l L_uClibc_main,r1
+	add r12, r1
+	jsr @r1
+	nop
+	/* We should not get here. */
+	mov.l L_abort,r1
+	add r12, r1
+	jmp @r1
+	nop
+#else
 	mov.l L_fini,r0
 	mov.l r0, at -r15
 
@@ -73,10 +102,25 @@ _start:
 	mov.l L_abort,r1
 	jmp @r1
 	nop
+#endif
 
 	.size _start,.-_start
 	.align	2
 
+#ifdef __PIC__
+L_got:
+	.long	_GLOBAL_OFFSET_TABLE_
+L_main:
+	.long	main at GOTOFF
+L_init:
+	.long   _init at GOTOFF
+L_fini:
+	.long   _fini at GOTOFF
+L_uClibc_main:
+	.long   __uClibc_main at GOTOFF
+L_abort:
+	.long   abort at GOTOFF
+#else
 L_main:
 	.long   main
 L_init:
@@ -87,6 +131,7 @@ L_uClibc_main:
 	.long   __uClibc_main
 L_abort:
 	.long   abort
+#endif
 
 /* Define a symbol for the first piece of initialized data.  */
 	.data
-- 
1.5.6.3