Hello Pankaj
I've successfully built a toolchain for an arm926ejs that allow me to build an
simple c hello world (i haven't tested multithread, c++, or complex project
with lot of dependancies, ...)
I used the git://sources.blackfin.uclinux.org/git/users/vapier/elf2flt.git
sources with the attached patch.
The script used for compiling the toolchain is
https://gitorious.org/bif/bif/blobs/master/framework/packages/toolchain-uclinux_uclibc/toolchain-uclinux_uclibc.sh
It's a personal job that should not be taken as a reference... and perhaps you
could also see the sources of busybox, crosstools-ng or openembedded ...
Regards.
Paul.
Le 07/20/2012 05:43 AM, Pankaj DEV a écrit :
Hello,
I am using ARM-Versatile Cortex-R4 platform and I have toolchain build with
following components' versions :
1. GNU GCC : 4.6.3 20120301
2. GNU Binutils - 2.20.51.20100809
3. uClibc-nptl-0.9.33-66
To build the user application binary (FLAT), I downloaded the following(latest)
version of ELF2FLT package from
http://blackfin.uclinux.org/git/?p=users/vapier/elf2flt.git;a=summary
2011-04-04
David
McCullough<http://blackfin.uclinux.org/git/?p=users/vapier/elf2flt.git;a=search;s=David+McCullough;st=author>
The GNU linker uses -v as a shortcut to --version,...
<http://blackfin.uclinux.org/git/?p=users/vapier/elf2flt.git;a=commit;h=40f0d175e0847d922faa85cc18ec01f2129bb2b9>
I was able to build the package properly and install it in my existing (above)
toolchain, but now when I try to build a simple (hello) C user program using
-Wl,-elf2flt options, I am getting following errors :
a.
/root/distro-armv7r/STLinux-2.4/devkit/armv7r_uclibc/arm-cortex-linux-uclibcgnueabi/bin/ld.real:
section .junk loaded at [00000000,0000001f] overlaps section .text loaded at
[00000000,0000011f]
b.
/root/distro-armv7r/STLinux-2.4/devkit/armv7r_uclibc/arm-cortex-linux-uclibcgnueabi/bin/ld.real:
BFD (GNU Binutils - STMicroelectronics/Linux Base) 2.20.51.20100809 assertion
fail ../../bfd/elf32-arm.c:13377
Any Idea ?
My doubt :
Is ELF2FLT package compatible with the above mentioned versions of
GCC/Binutils/uClibc for ARM-R4 used ?
If anybody has tried to build a toolchain for ARM with this ELF2FLT package,
can u help us with the versions of GCC/Binutils/uClibc ?
Or may be if anyone knows any working ARM-CortexR4 working toolchain containing
ELF2FLT ?
Regards
Pankaj Dev
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>From eca469f6946f92035f1ba4463829eb1f0e0fd98d Mon Sep 17 00:00:00 2001
From: Paul Chavent <paul.chav...@fnac.net>
Date: Thu, 17 May 2012 08:10:44 +0200
Subject: [PATCH] Arm support update (exidx sections).
---
.gitignore | 1 +
elf2flt.c | 27 +++++++++++++++++++++++++++
elf2flt.ld.in | 17 ++++++++++++++---
3 files changed, 42 insertions(+), 3 deletions(-)
diff --git a/.gitignore b/.gitignore
index 92ff5f6..e0e0bd5 100644
--- a/.gitignore
+++ b/.gitignore
@@ -22,3 +22,4 @@ elf2flt
elf2flt.ld
flthdr
ld-elf2flt
+ld-elf2flt.sh
\ No newline at end of file
diff --git a/elf2flt.c b/elf2flt.c
index 2fea9b5..1a7ef88 100644
--- a/elf2flt.c
+++ b/elf2flt.c
@@ -54,6 +54,8 @@ const char *elf2flt_progname;
#if defined(TARGET_h8300)
#include <elf/h8.h> /* TARGET_* ELF support for the BFD library
*/
+#elif defined(TARGET_arm)
+#include "elf/arm.h"
#elif defined(__CYGWIN__) || defined(__MINGW32__) || defined(TARGET_nios) ||
defined(TARGET_nios2)
#include "cygwin-elf.h" /* Cygwin uses a local copy */
#elif defined(TARGET_microblaze)
@@ -639,12 +641,16 @@ dump_symbols(symbols, number_of_symbols);
relocation_needed = 1;
break;
case R_ARM_REL32:
+ case R_ARM_JUMP24:
+ case R_ARM_CALL:
case R_ARM_THM_PC11:
case R_ARM_THM_PC22:
case R_ARM_PC24:
case R_ARM_PLT32:
case R_ARM_GOTPC:
case R_ARM_GOT32:
+ case R_ARM_PREL31:
+ case R_ARM_NONE:
relocation_needed = 0;
break;
default:
@@ -1702,6 +1708,27 @@ int main(int argc, char *argv[])
}
}
+ if (verbose) {
+ printf(" verbose = %d\n"
+ " load_to_ram = %d\n"
+ " ktrace = %d\n"
+ " docompress = %d\n"
+ " pfile = \"%s\"\n"
+ " ofile = \"%s\"\n"
+ " use_resolved = %d\n"
+ " stack = %d\n"
+ " rel_file = \"%s\\n",
+ verbose ,
+ load_to_ram ,
+ ktrace ,
+ docompress ,
+ pfile ,
+ ofile ,
+ use_resolved,
+ stack ,
+ rel_file );
+ }
+
/*
* if neither the -r or -p options was given, default to
* a RAM load as that is the only option that makes sense.
diff --git a/elf2flt.ld.in b/elf2flt.ld.in
index c7e01a6..56b8f96 100644
--- a/elf2flt.ld.in
+++ b/elf2flt.ld.in
@@ -32,6 +32,8 @@ W_RODAT *(.rodata1)
W_RODAT *(.rodata.*)
W_RODAT *(.gnu.linkonce.r*)
+ /* .ARM.extab name sections containing exception unwinding
information */
+ *(.ARM.extab* .gnu.linkonce.armextab.*)
/* This is special code area at the end of the normal
text section. It contains a small lookup table at
the start followed by the code pointed to by entries
@@ -40,11 +42,20 @@ W_RODAT *(.gnu.linkonce.r*)
PROVIDE(@SYMBOL_PREFIX@__ctbp = .);
*(.call_table_data)
*(.call_table_text)
-
- . = ALIGN(0x20) ;
- @SYMBOL_PREFIX@_etext = . ;
} > flatmem :text
+ /* .ARM.exidx name sections containing index entries for section
unwinding */
+ /* .ARM.exidx is sorted, so has to go in its own output section. */
+ @SYMBOL_PREFIX@__exidx_start = .;
+ .ARM.exidx :
+ {
+ *(.ARM.exidx* .gnu.linkonce.armexidx.*)
+ } > flatmem
+ @SYMBOL_PREFIX@__exidx_end = .;
+
+ . = ALIGN(0x20) ;
+ @SYMBOL_PREFIX@_etext = . ;
+
.data : {
. = ALIGN(0x4) ;
@SYMBOL_PREFIX@_sdata = . ;
--
1.7.4.4
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