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* [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions
@ 2005-10-25 20:49 djohnson+gcc at sw dot starentnetworks dot com
2005-10-25 21:40 ` [Bug target/24528] " pinskia at gcc dot gnu dot org
` (3 more replies)
0 siblings, 4 replies; 5+ messages in thread
From: djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-25 20:49 UTC (permalink / raw)
To: gcc-bugs
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
^ permalink raw reply [flat|nested] 5+ messages in thread* [Bug target/24528] [ARM EB] strcpy() of small string constant produces wrong instructions 2005-10-25 20:49 [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-25 21:40 ` pinskia at gcc dot gnu dot org 2005-10-25 21:43 ` djohnson+gcc at sw dot starentnetworks dot com ` (2 subsequent siblings) 3 siblings, 0 replies; 5+ messages in thread From: pinskia at gcc dot gnu dot org @ 2005-10-25 21:40 UTC (permalink / raw) To: gcc-bugs ------- Comment #1 from pinskia at gcc dot gnu dot org 2005-10-25 21:40 ------- Can you attach the preprocessed source for the code you have? -- pinskia at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |WAITING Keywords| |wrong-code http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24528 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/24528] [ARM EB] strcpy() of small string constant produces wrong instructions 2005-10-25 20:49 [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 21:40 ` [Bug target/24528] " pinskia at gcc dot gnu dot org @ 2005-10-25 21:43 ` djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 22:05 ` djohnson+gcc at sw dot starentnetworks dot com 2005-10-26 12:33 ` rearnsha at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-25 21:43 UTC (permalink / raw) To: gcc-bugs ------- Comment #2 from djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 21:43 ------- Created an attachment (id=10057) --> (http://gcc.gnu.org/bugzilla/attachment.cgi?id=10057&action=view) preprocessed file -- http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24528 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/24528] [ARM EB] strcpy() of small string constant produces wrong instructions 2005-10-25 20:49 [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 21:40 ` [Bug target/24528] " pinskia at gcc dot gnu dot org 2005-10-25 21:43 ` djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-25 22:05 ` djohnson+gcc at sw dot starentnetworks dot com 2005-10-26 12:33 ` rearnsha at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-25 22:05 UTC (permalink / raw) To: gcc-bugs -- djohnson+gcc at sw dot starentnetworks dot com changed: What |Removed |Added ---------------------------------------------------------------------------- Status|WAITING |UNCONFIRMED http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24528 ^ permalink raw reply [flat|nested] 5+ messages in thread
* [Bug target/24528] [ARM EB] strcpy() of small string constant produces wrong instructions 2005-10-25 20:49 [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions djohnson+gcc at sw dot starentnetworks dot com ` (2 preceding siblings ...) 2005-10-25 22:05 ` djohnson+gcc at sw dot starentnetworks dot com @ 2005-10-26 12:33 ` rearnsha at gcc dot gnu dot org 3 siblings, 0 replies; 5+ messages in thread From: rearnsha at gcc dot gnu dot org @ 2005-10-26 12:33 UTC (permalink / raw) To: gcc-bugs ------- Comment #3 from rearnsha at gcc dot gnu dot org 2005-10-26 12:33 ------- If you can't upgrade to gcc-3.4, see the patch link in the bug this is a duplicate of *** This bug has been marked as a duplicate of 22528 *** -- rearnsha at gcc dot gnu dot org changed: What |Removed |Added ---------------------------------------------------------------------------- Status|UNCONFIRMED |RESOLVED Resolution| |DUPLICATE http://gcc.gnu.org/bugzilla/show_bug.cgi?id=24528 ^ permalink raw reply [flat|nested] 5+ messages in thread
end of thread, other threads:[~2005-10-26 12:33 UTC | newest] Thread overview: 5+ messages (download: mbox.gz / follow: Atom feed) -- links below jump to the message on this page -- 2005-10-25 20:49 [Bug c/24528] New: [ARM EB] strcpy() of small string constant produces wrong instructions djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 21:40 ` [Bug target/24528] " pinskia at gcc dot gnu dot org 2005-10-25 21:43 ` djohnson+gcc at sw dot starentnetworks dot com 2005-10-25 22:05 ` djohnson+gcc at sw dot starentnetworks dot com 2005-10-26 12:33 ` rearnsha at gcc dot gnu dot org
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