https://sourceware.org/bugzilla/show_bug.cgi?id=25616
Bug ID: 25616
Summary: --fix-v4bx does not work
Product: binutils
Version: 2.31
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: ld
Assignee: unassigned at sourceware dot org
Reporter: gary at partis dot co.uk
Target Milestone: ---
Created attachment 12327
--> https://sourceware.org/bugzilla/attachment.cgi?id=12327&action=edit
Tar file containing object and library files to be linked
Hi
I am using GNU ld version 2.31.1 to target ARMv3 (ARM610/710) processors.
Primarily, GCC's libgcc contains "BX LR" instructions which we want changed to
"MOV PC,LR" so to be compatible with older processors, but after running the
linker with the "--fix-vxb4" directive the BX instructions are still there (we
use objdump to disassemble the resultant ELF file to check).
Attached is a tar containing some object and library files. They are linked
thus :
arm-eabi-ld --fix-v4bx -static -nostdlib --format elf32-littlearm --relocatable
OS_FuncMain.o StringUtils.o --start-group StringUtils.a ANSIC.a OS.a libgcc.a
--end-group -o StringUtils.elf
Then a check is made :
arm-eabi-objdump StringUtils.elf --disassemble-all --all-headers | grep -i bx
...and the "bx lr" instructions are still there instead of the "mov pc,lr".
Kind regards
Gary Partis
--
You are receiving this mail because:
You are on the CC list for the bug.
