This is the mail archive of the crossgcc@sourceware.org mailing list for the crossgcc project.
See the CrossGCC FAQ for lots more information.
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |
Other format: | [Raw text] |
On Sun, 2005-08-14 at 20:40, Dan Kegel wrote: > Lennert Buytenhek wrote: > > Dan, would you consider adding the attached patch to crosstool? > > Can we get another ARM user to confirm the problem > and that this fixes it? Then I'd be happy to. > It'll be in contrib until then. > Anybody suffering from problems on big-endian builds of gcc-3.3 for arm should check out the patch I recently attached to PR 22528: http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22528 This would almost certainly match the evidence reported here (fails on arm6 but works for arm7tdmi). R. > > $ cat crosstool-0.38/patches/gcc-3.3.4/gcc-3.3.4-pr23256.patch > > On big-endian ARM platforms, gcc 3.3.x miscompiles itself, glibc, > > and potentially other programs as well, when SUBTARGET_CPU_DEFAULT > > is TARGET_CPU_arm6. > > > > As gcc 3.3.4 switched the default to TARGET_CPU_arm6, this causes gcc > > 3.3.[456] to fail to compile itself on armeb. gcc 3.3.3 and earlier > > (inadvertently, see PR12527) defaulted to TARGET_CPU_arm7tdmi, which > > prevents this miscompilation from occuring. > > > > We don't know what exactly goes wrong when TARGET_CPU_arm6 is used, but > > we do know for sure that it's this hunk that triggers the miscompilation, > > so let's just change the default back to arm7tdmi so that everyone can > > be happy once again. > > > > Signed-off-by: Lennert Buytenhek <buytenh@wantstofly.org> > > > > > > --- gcc-3.3.4/gcc/config/arm/linux-elf.h.orig 2005-08-14 20:58:17.000000000 +0200 > > +++ gcc-3.3.4/gcc/config/arm/linux-elf.h 2005-08-14 20:58:24.000000000 +0200 > > @@ -48,7 +48,7 @@ > > #undef TARGET_DEFAULT > > #define TARGET_DEFAULT (ARM_FLAG_APCS_32 | ARM_FLAG_MMU_TRAPS | TARGET_ENDIAN_DEFAULT) > > > > -#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm6 > > +#define SUBTARGET_CPU_DEFAULT TARGET_CPU_arm7tdmi > > > > #define SUBTARGET_EXTRA_LINK_SPEC " -m " TARGET_LINKER_EMULATION " -p" > > > > ------ Want more information? See the CrossGCC FAQ, http://www.objsw.com/CrossGCC/ Want to unsubscribe? Send a note to crossgcc-unsubscribe@sources.redhat.com
Index Nav: | [Date Index] [Subject Index] [Author Index] [Thread Index] | |
---|---|---|
Message Nav: | [Date Prev] [Date Next] | [Thread Prev] [Thread Next] |