From 9cba52f0aedbb95671e8a14e3fd5ff98381ff2b0 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Thu, 8 Aug 2002 14:35:49 +0000
Subject: Patch from Stefan Allius and Edie C. Dost to add SuperH shared
 library support.  This also adds some cleaner error handling, which I (Erik)
 then ported over to x86 and arm. In addition Stefan added the following
 fixes:

- in hash.c was the lvalue handling of global library functions wrong.
   To fix this I had to change the prototype of _dl_find_hash. (==> TIS and
   ELF spec. Vers. 1.2)

- in ldso.c was the order of the .init sections calls wrong. Before we call
  the initialization code of a library we have to check that all dependend
  libraries are already initialized. This can easily made by calling it in the
  revers loading order. For this I added a previous pointer chain.

- in ldso.c the ELF magics wasn't checked fo PPC, MIPS and SH architecture
---
 ldso/ldso/sh/resolve.S | 69 ++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 69 insertions(+)
 create mode 100644 ldso/ldso/sh/resolve.S

(limited to 'ldso/ldso/sh/resolve.S')

diff --git a/ldso/ldso/sh/resolve.S b/ldso/ldso/sh/resolve.S
new file mode 100644
index 000000000..4d8eee6c2
--- /dev/null
+++ b/ldso/ldso/sh/resolve.S
@@ -0,0 +1,69 @@
+/*
+ * Stolen from glibc-2.2.2 by Eddie C. Dost <ecd@atecom.com>
+ */
+
+	.text
+	.globl	_dl_linux_resolve
+	.type	_dl_linux_resolve, @function
+	.balign	16
+_dl_linux_resolve:
+	mov.l	r3, @-r15
+	mov.l	r4, @-r15
+	mov.l	r5, @-r15
+	mov.l	r6, @-r15
+	mov.l	r7, @-r15
+	mov.l	r12, @-r15
+	movt	r3		! Save T flag
+	mov.l	r3, @-r15
+
+#ifdef HAVE_FPU
+	sts.l	fpscr, @-r15
+	mov	#8,r3
+	swap.w	r3, r3
+	lds	r3, fpscr
+	fmov.s	fr11, @-r15
+	fmov.s	fr10, @-r15
+	fmov.s	fr9, @-r15
+	fmov.s	fr8, @-r15
+	fmov.s	fr7, @-r15
+	fmov.s	fr6, @-r15
+	fmov.s	fr5, @-r15
+	fmov.s	fr4, @-r15
+#endif
+	sts.l	pr, @-r15
+
+	mov	r2, r4		! link map address
+
+	mov.l	3f, r0
+	jsr	@r0		! Call resolver
+	 mov	r1, r5		! Reloc offset
+
+	lds.l	@r15+, pr	! Get register content back
+
+#ifdef HAVE_FPU
+	fmov.s	@r15+, fr4
+	fmov.s	@r15+, fr5
+	fmov.s	@r15+, fr6
+	fmov.s	@r15+, fr7
+	fmov.s	@r15+, fr8
+	fmov.s	@r15+, fr9
+	fmov.s	@r15+, fr10
+	fmov.s	@r15+, fr11
+	lds.l	@r15+, fpscr
+#endif
+
+	mov.l	@r15+, r3
+	shal	r3		! Load T flag
+	mov.l	@r15+, r12
+	mov.l	@r15+, r7
+	mov.l	@r15+, r6
+	mov.l	@r15+, r5
+	mov.l	@r15+, r4
+	jmp	@r0		! Jump to function address
+	 mov.l	@r15+, r3
+
+	.balign	4
+3:
+	.long	_dl_linux_resolver
+	.size	_dl_linux_resolve, . - _dl_linux_resolve
+
-- 
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