Given the following c code from sysvinit's init.c:
if (ch->action == SYSINIT) strcpy(ch->rlevel, "#");
gcc is producing the correct set of instructions for little endian arm, but
incorrect set of instructions for big endian arm.
That line when compiled with -mlittle-endian (correct):
ldr r1, [r5, #40]
cmp r1, #13
moveq r3, #35
moveq r2, #0
streqb r3, [r5, #28]
streqb r2, [r5, #29]
That line when compiled with -mbig-endian (wrong):
ldr r1, [r5, #40]
cmp r1, #13
moveq r3, #0
streqb r3, [r5, #29]
streqb r3, [r5, #28]
This results in ch->rlevel[0] set to zero instead of '#'.
Offsets/enums are correct (40 for action, 28 for start of rlevel, and 13 for
SYSINIT).
I can post entire preprocessed and compiled output if needed.
compile line is:
arm-linux-gcc -c -mlong-calls -fPIC -mbig-endian -Wall -O2 -D_GNU_SOURCE init.c
gcc version 3.3.6
--
Summary: [ARM EB] strcpy() of small string constant produces
wrong instructions
Product: gcc
Version: 3.3.6
Status: UNCONFIRMED
Severity: normal
Priority: P2
Component: c
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: djohnson+gcc at sw dot starentnetworks dot com
GCC build triplet: i686-linux
GCC host triplet: i686-linux
GCC target triplet: arm-linux
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24528
