From baa67289df42b1b994092b8312148a6f9e172274 Mon Sep 17 00:00:00 2001
From: Eric Andersen <andersen@codepoet.org>
Date: Wed, 18 Feb 2004 08:04:51 +0000
Subject: Alexandre Oliva writes:
This patch adds code to uClibc to support a new ABI designed for the
FR-V architecture, that enables text segments of executables and
shared libraries to be shared by multiple processes on an OS such as
uClinux, that can run on FR-V processors without an MMU.
Patches for binutils and GCC have just been posted in the
corresponding mailing lists. The binutils patch was approved,
but there's one additional patch pending review, that I posted
this week. An updated GCC patch will be posted to
gcc-patches@gcc.gnu.org as soon as I complete testing (I used a
known-good compiler to test the uClibc patch below).
Since the existing dynamic loader code didn't support independent
relocation of segments, it required changes that were somewhat
extensive. I've added a number of new machine-specific macros to try
to keep the platform and ABI-specific details outside the generic
code. I hope this is not a problem.
---
include/elf.h | 16 +++++++++++++++-
1 file changed, 15 insertions(+), 1 deletion(-)
(limited to 'include')
diff --git a/include/elf.h b/include/elf.h
index b4de42e0d..e2264bd6c 100644
--- a/include/elf.h
+++ b/include/elf.h
@@ -1,5 +1,5 @@
/* This file defines standard ELF types, structures, and macros.
- Copyright (C) 1995-1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ Copyright (C) 1995-1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
This file is part of the GNU C Library.
The GNU C Library is free software; you can redistribute it and/or
@@ -254,6 +254,9 @@ typedef struct
pick large random numbers (0x8523, 0xa7f2, etc.) to minimize the
chances of collision with official or non-GNU unofficial values. */
+/* Fujitsu FR-V. */
+#define EM_CYGNUS_FRV 0x5441
+
#define EM_ALPHA 0x9026
/* V850 backend magic number. Written in the absense of an ABI. */
@@ -1116,6 +1119,17 @@ typedef struct
/* Keep this the last entry. */
#define R_386_NUM 38
+/* FR-V specific definitions. */
+#define R_FRV_NONE 0 /* No reloc. */
+#define R_FRV_32 1 /* Direct 32 bit. */
+/* Canonical function descriptor address. */
+#define R_FRV_FUNCDESC 14
+/* Private function descriptor initialization. */
+#define R_FRV_FUNCDESC_VALUE 18
+
+#define EF_FRV_PIC 0x00000100
+#define EF_FRV_FDPIC 0x00008000
+
/* SUN SPARC specific definitions. */
/* Legal values for ST_TYPE subfield of st_info (symbol type). */
--
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