http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #22 from hjl at gcc dot gnu.org 2011-07-29
16:00:48 UTC ---
Author: hjl
Date: Fri Jul 29 16:00:41 2011
New Revision: 176932
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176932
Log:
Rewrite x86 lea support for x32.
2011-07-2
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
Uros Bizjak changed:
What|Removed |Added
Status|UNCONFIRMED |RESOLVED
URL|
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #20 from uros at gcc dot gnu.org 2011-07-26 12:00:36 UTC ---
Author: uros
Date: Tue Jul 26 12:00:33 2011
New Revision: 176788
URL: http://gcc.gnu.org/viewcvs?root=gcc&view=rev&rev=176788
Log:
PR target/47381
PR target/49832
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #19 from H.J. Lu 2011-07-25 20:13:13
UTC ---
(In reply to comment #18)
> (In reply to comment #14)
> > Another problem:
> >
> > [hjl@gnu-6 gcc]$ cat /tmp/bar.c
> > typedef unsigned int Elf32_Addr;
> > extern void _start (void);
> > i
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #18 from H.J. Lu 2011-07-25 20:10:27
UTC ---
(In reply to comment #14)
> Another problem:
>
> [hjl@gnu-6 gcc]$ cat /tmp/bar.c
> typedef unsigned int Elf32_Addr;
> extern void _start (void);
> int
> dl_main ( Elf32_Addr *user_entry)
>
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #17 from H.J. Lu 2011-07-25 20:00:45
UTC ---
(In reply to comment #16)
> (In reply to comment #15)
> > (In reply to comment #14)
> > > Another problem:
> >
> > > /tmp/bar.c:10:1: error: unrecognizable insn:
> > > (insn 6 5 7 3 (set (
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #16 from H.J. Lu 2011-07-25 19:59:00
UTC ---
(In reply to comment #15)
> (In reply to comment #14)
> > Another problem:
>
> > /tmp/bar.c:10:1: error: unrecognizable insn:
> > (insn 6 5 7 3 (set (reg:SI 67)
> > (symbol_ref:SI
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #15 from Uros Bizjak 2011-07-25 19:51:52
UTC ---
(In reply to comment #14)
> Another problem:
> /tmp/bar.c:10:1: error: unrecognizable insn:
> (insn 6 5 7 3 (set (reg:SI 67)
> (symbol_ref:SI ("_start") [flags 0x41] _start>))
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #14 from H.J. Lu 2011-07-25 19:39:27
UTC ---
Another problem:
[hjl@gnu-6 gcc]$ cat /tmp/bar.c
typedef unsigned int Elf32_Addr;
extern void _start (void);
int
dl_main ( Elf32_Addr *user_entry)
{
if (*user_entry == (Elf32_Addr) _star
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
Pawel Sikora changed:
What|Removed |Added
CC||pluto at agmk dot net
--- Comment #13 from
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #12 from H.J. Lu 2011-07-25 18:29:08
UTC ---
Working x32 GCC generates:
[hjl@gnu-6 gcc]$ cat foo.s
.file"foo.c"
.text
.p2align 4,,15
.globldl_main
.typedl_main, @function
dl_main:
.LFB0:
.cfi_start
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #11 from H.J. Lu 2011-07-25 18:28:22
UTC ---
[hjl@gnu-6 gcc]$ cat /tmp/foo.c
typedef unsigned int Elf32_Addr;
extern void _start (void) __attribute__ ((visibility ("hidden")));
int
dl_main ( Elf32_Addr *user_entry)
{
if (*user_entry
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #10 from H.J. Lu 2011-07-25 18:03:51
UTC ---
(In reply to comment #5)
> Created attachment 24831 [details]
> A testcase
>
> elf/rtld.c in glibc is miscompiled by
>
> -std=gnu99 -fgnu89-inline -O2 -fPIC
GCC generates many relocation
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #9 from Uros Bizjak 2011-07-25 16:58:49
UTC ---
(In reply to comment #8)
> Working ld.so sets EDX properly with:
Sorry, I need a testcase to debug this...
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #8 from H.J. Lu 2011-07-25 16:41:36
UTC ---
(In reply to comment #7)
> (In reply to comment #1)
> > X32 dynamic linker is miscompiled:
>
> BTW: These two functions look the same to me.
>
> "lea(%rsi,%rdx,1),%edx" is the same as
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #7 from Uros Bizjak 2011-07-25 16:24:03
UTC ---
(In reply to comment #1)
> X32 dynamic linker is miscompiled:
BTW: These two functions look the same to me.
"lea(%rsi,%rdx,1),%edx" is the same as "add%esi,%edx".
Can you plea
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #6 from H.J. Lu 2011-07-25 16:15:31
UTC ---
(In reply to comment #4)
> A shot-in-the-dark change:
>
> (define_insn "*add_1"
> [(set (match_operand:SWI48 0 "nonimmediate_operand" "=r,rm,r,r")
> (plus:SWI48
> (match_operand
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #5 from H.J. Lu 2011-07-25 16:15:10
UTC ---
Created attachment 24831
--> http://gcc.gnu.org/bugzilla/attachment.cgi?id=24831
A testcase
elf/rtld.c in glibc is miscompiled by
-std=gnu99 -fgnu89-inline -O2 -fPIC
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #4 from Uros Bizjak 2011-07-25 15:20:42
UTC ---
A shot-in-the-dark change:
(define_insn "*add_1"
[(set (match_operand:SWI48 0 "nonimmediate_operand" "=r,rm,r,r")
(plus:SWI48
(match_operand:SWI48 1 "nonimmediate_operand" "
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #3 from Uros Bizjak 2011-07-25 14:52:12
UTC ---
(In reply to comment #2)
> The miscompiled function is
Er, not a testcase ...
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #2 from H.J. Lu 2011-07-25 14:36:23
UTC ---
The miscompiled function is
auto inline void
__attribute ((always_inline))
elf_machine_rela_relative (ElfW(Addr) l_addr, const ElfW(Rela) *reloc,
void *const relo
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=49833
--- Comment #1 from H.J. Lu 2011-07-25 13:59:10
UTC ---
X32 dynamic linker is miscompiled:
Program received signal SIGSEGV, Segmentation fault.
0x00114821 in elf_machine_rela_relative (reloc_addr_arg=,
l_addr=1114112, reloc=)
at ../sysd
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