https://sourceware.org/bugzilla/show_bug.cgi?id=16949
Bug ID: 16949
Summary: arm-none-eabi-objdump segfaults when disassembling ARM
BE elf file
Product: binutils
Version: 2.25 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
Assignee: unassigned at sourceware dot org
Reporter: andrew.smirnov at gmail dot com
Created attachment 7601
--> https://sourceware.org/bugzilla/attachment.cgi?id=7601&action=edit
ARMBE ELF file causing the segfault
Hi,
I am compiling a very simplistic firmware for TI TMS570, which is a Cortex-R4
MCU that operates in Big-Endian mode. The firmware I am trying to write needs
to be linked against binary-only library provided by TI which I believe was
built using TI CodeComplser toolchain(non GCC)
Host machine is:
$ uname -a
Linux charmander 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014
x86_64 x86_64 x86_64 GNU/Linux
$ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 14.04 LTS
Release: 14.04
Codename: trusty
The code of the example is:
#include <F021.h>
int start(void)
{
return Fapi_issueAsyncCommandWithAddress(1, (uint32_t *)0);
}
And I am building it as follows:
arm-none-eabi-gcc -Wall -std=gnu99 -O0 -flto -fshort-wchar -g -DTMS570LS31
-mthumb -march=armv7-r -mtune=cortex-r4 -mbig-endian -nostdlib
-I~/ti/hercules/F021FlashApi-02.00.01/include -c main.c
arm-none-eabi-gcc main.o
~/ti/hercules/F021FlashApi-02.00.01/F021_API_CortexR4_BE.lib -mthumb
-march=armv7-r -mtune=cortex-r4 -mbig-endian -nostdlib -g -gdwarf-2
-Ttms570ls31.ld -Tsections.ld -Wl,-Map=tms570ls31-helper.map -o
tms570ls31-helper.elf
Linker scripts used in this example are as follows:
$ cat sections.ld
ENTRY(start)
SECTIONS
{
.text :
{
*(.text*)
*(.rodata*)
} > RAM
__etext = .;
.data : AT (__etext)
{
__data_start__ = .;
*(.data*)
} > RAM
.bss :
{
. = ALIGN(4);
__bss_start__ = .;
*(.bss*)
*(COMMON)
. = ALIGN(4);
__bss_end__ = .;
} > RAM
}
$ cat tms570ls31.ld
MEMORY
{
RAM (rwx) : ORIGIN = 0x08000000, LENGTH = 256K
}
So when I try to do
arm-none-eabi-objdump -S tms570ls31-helper.elf
It segfaults as soon as it starts disassembling the function from proprietary
library(Fapi_issueAsyncCommandWithAddress).
I tried both objdump from https://launchpad.net/gcc-arm-embedded and built form
the latest master of binutils-gdb.git repository and both behaved exactly the
same.
I attached the elf file causing the problem. Let me know if I can provide any
more additional information/assistance that would help.
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