winxp SP2 running cygwin.
Upgrading binutils from 2.16.1 to 2.17 (and cvs head) the following problem has
appeared.
when using a startup file that uses variables from the linker script, the values
passed to the final binary are incorrect if the section is empty, data section
is used for this example.
In the example below the value for __data_start is incorrect if the data section
is empty, if the var is uncommented then the value for __data_start is correct.
Built with command line:
arm-elf-as --gdwarf-2 test.s -o test.o
arm-elf-ld -Ttext 0x00000000 -Tdata 0x20000000 -Map=test.map -o test.elf test.o
test.s dump:
.data
#var1: .long 0x10
.text
.arm
.global _start
_start:
/* Relocate .data section (Copy from ROM to RAM) */
LDR r1, =_etext
LDR r2, =__data_start
LDR r3, =_edata
LoopRel:
CMP r2, r3
LDRLO r0, [r1], #4
STRLO r0, [r2], #4
BLO LoopRel
main:
B main
.end
--
Summary: ld fails to link correct variables from linker script.
Product: binutils
Version: 2.18 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: ld
AssignedTo: unassigned at sources dot redhat dot com
ReportedBy: sjo at anglia dot com
CC: bug-binutils at gnu dot org
GCC build triplet: i686-pc-cygwin
GCC host triplet: i686-pc-cygwin
GCC target triplet: arm-elf
http://sourceware.org/bugzilla/show_bug.cgi?id=3223
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