* Re: [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
[not found] <413B222D.8040601@tiscali.be>
@ 2004-09-06 2:47 ` John David Anglin
2004-09-06 19:57 ` Carlos O'Donell
2004-09-06 3:02 ` John David Anglin
1 sibling, 1 reply; 10+ messages in thread
From: John David Anglin @ 2004-09-06 2:47 UTC (permalink / raw)
To: Joel Soete; +Cc: parisc-linux
> > ../sysdeps/generic/unwind-dw2.c:1021: warning:
> > 'fallback_frame_state_for' defined but not used
> > rtld.c:730: warning: implicit declaration of function
This problem in serious and needs to be fixed. The function
fallback_frame_state_for is needed. It is only called from an asm and
gcc doesn't know about calls from asm's.
Dave
--
J. David Anglin dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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* Re: [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
[not found] <413B222D.8040601@tiscali.be>
2004-09-06 2:47 ` [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb John David Anglin
@ 2004-09-06 3:02 ` John David Anglin
1 sibling, 0 replies; 10+ messages in thread
From: John David Anglin @ 2004-09-06 3:02 UTC (permalink / raw)
To: Joel Soete; +Cc: parisc-linux
> > the weird in this last warning is that it's a very small fnct:
> > [...]
> > static inline void
> > __set_cr27(struct _pthread_descr_struct * cr27)
> > {
> > asm(
> > "ble 0xe0(%%sr2, %%r0)\n\t"
> > "copy %0, %%r26"
> > : : "r" (cr27) : "r26" );
> > }
> > [...]
There might be a bug in gcc's size estimate for asm's. See the
subsection "Size of an @code{asm}" in the gcc manual. This could be
checked with a small test program that tries to inline the above.
> 244 static inline pthread_descr thread_self (void) __attribute__
> ((const,always_inline));
This is correct.
Dave
--
J. David Anglin dave.anglin@nrc-cnrc.gc.ca
National Research Council of Canada (613) 990-0752 (FAX: 952-6602)
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^ permalink raw reply [flat|nested] 10+ messages in thread
* Re: [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
2004-09-06 2:47 ` [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb John David Anglin
@ 2004-09-06 19:57 ` Carlos O'Donell
0 siblings, 0 replies; 10+ messages in thread
From: Carlos O'Donell @ 2004-09-06 19:57 UTC (permalink / raw)
To: John David Anglin; +Cc: parisc-linux
On Sun, Sep 05, 2004 at 10:47:57PM -0400, John David Anglin wrote:
> > > ../sysdeps/generic/unwind-dw2.c:1021: warning:
> > > 'fallback_frame_state_for' defined but not used
> > > rtld.c:730: warning: implicit declaration of function
>
> This problem in serious and needs to be fixed. The function
> fallback_frame_state_for is needed. It is only called from an asm and
> gcc doesn't know about calls from asm's.
It will only become important the day we need dwarf2 compat.
That function is used as a fallback if 'frame_state_for' doesn't exist,
and if libgcc_s.so.1 doesn't include '__frame_state_for', in which case
we use a fallback onto the dwarf2 compat code in glibc.
In an sjlj environment fallback_frame_state_for just becomes abort if
the above tests fail, and hence there is an extra
fallback_frame_state_for that doesn't get used in the glibc build with
an sjlj compiler.
See libc/sysdeps/generic/framestate.c for the fixes I made to this file.
c.
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* Re: [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
[not found] ` <200409060239.i862dAh2001466@hiauly1.hia.nrc.ca>
@ 2004-09-06 19:58 ` Carlos O'Donell
2004-09-06 21:49 ` Joel Soete
1 sibling, 0 replies; 10+ messages in thread
From: Carlos O'Donell @ 2004-09-06 19:58 UTC (permalink / raw)
To: John David Anglin; +Cc: parisc-linux
On Sun, Sep 05, 2004 at 10:39:10PM -0400, John David Anglin wrote:
> > 0x411cc740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
> > in:
> > r7 == 0x7c4
> > r6 == 0x0
>
> r6 is wrong. Find out why it is zero.
Agreed. It's crashing because it has bogus input in my opinion.
c.
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* [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
[not found] ` <413AFB1F.7010407@tiscali.be>
@ 2004-09-06 20:03 ` Carlos O'Donell
2004-09-06 20:26 ` Joel Soete
0 siblings, 1 reply; 10+ messages in thread
From: Carlos O'Donell @ 2004-09-06 20:03 UTC (permalink / raw)
To: Joel Soete; +Cc: parisc-linux
Joel,
> make[2]: *** [/space/jrso/parisc-linux/build/glibc/libio/tst-atime.out]
This is new. Could you see why this is failing?
> make[2]: *** [/space/jrso/parisc-linux/build/glibc/posix/tst-waitid.out]
This is a new one I'm working to fix.
c.
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* [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
2004-09-06 20:03 ` [parisc-linux] " Carlos O'Donell
@ 2004-09-06 20:26 ` Joel Soete
2004-09-06 22:02 ` Carlos O'Donell
0 siblings, 1 reply; 10+ messages in thread
From: Joel Soete @ 2004-09-06 20:26 UTC (permalink / raw)
To: Carlos O'Donell; +Cc: parisc-linux
Carlos O'Donell wrote:
> Joel,
>
>
>>make[2]: *** [/space/jrso/parisc-linux/build/glibc/libio/tst-atime.out]
>
>
> This is new. Could you see why this is failing?
>
"atime has not changed"
mmm may be that's logical:
/dev/sda3 / xfs noatime
hth,
Joel
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* Re: [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
[not found] ` <200409060239.i862dAh2001466@hiauly1.hia.nrc.ca>
2004-09-06 19:58 ` [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb Carlos O'Donell
@ 2004-09-06 21:49 ` Joel Soete
2004-09-11 18:22 ` [parisc-linux] stay the same with gcc-3.4.2 :( [was: back to glibc-2.3.3 & gcc-3.4.1 pb] Joel Soete
1 sibling, 1 reply; 10+ messages in thread
From: Joel Soete @ 2004-09-06 21:49 UTC (permalink / raw)
To: John David Anglin; +Cc: parisc-linux
Hello Dave,
John David Anglin wrote:
>> 0x411cc740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
>>in:
>>r7 == 0x7c4
>>r6 == 0x0
>
>
> r6 is wrong. Find out why it is zero.
>
Far from being an expert, with help of ddd it seems that:
ElfW(Addr)
_dl_make_fptr (struct link_map *map, const ElfW(Sym) *sym,
ElfW(Addr) ip)
{
ElfW(Addr) *ftab = map->l_mach.fptr_table; <====[2]
(Elf32_Addr *)fptr_table == (Elf32_Addr *) 0x0
(the same for gcc-3.3 ;) )
is:
Dump of assembler code from 0x411e371c to 0x411e381c:
0x411e371c <_dl_make_fptr+76>: ldw 1fc(,r26),r6 (r6 == 0x0)
the weird stuff his in fact here:
if (__builtin_expect (ftab == NULL, 0))
ftab = make_fptr_table (map);
with gcc-3.3 the register (r7) (which seems to me contains the value pointed by ftab) is well the one addressed by
map->l_mach.fptr_table ie map->l_mach.fptr_table == 0x40001000 (and btw map->l_mach.fptr_table_len == 2067)
OTC with gcc-3.4 the register (r6) after the 'call' of the inlined make_fptr_table() is restored to its starting value i.e.: 0x0
eventhought that map->l_mach.fptr_table == 0x40001000 (and btw map->l_mach.fptr_table_len == 2067) exactly the same as gcc-3.3.
duno if it could help:
for gcc-3.3 the text is:
Dump of assembler code from 0x412630d0 to 0x412631d0:
0x412630d0 <_dl_make_fptr+44>: ldw 1fc(,r26),r7 <====[2]
0x412630d4 <_dl_make_fptr+48>: copy r26,r8
0x412630d8 <_dl_make_fptr+52>: cmpib,= 0,r7,0x412631a0 <_dl_make_fptr+252> <===='call' make_fptr_table()
0x412630dc <_dl_make_fptr+56>: copy r25,r3
0x412630e0 <_dl_make_fptr+60>: ldw 30(,r8),r20
0x412630e4 <_dl_make_fptr+64>: ldw 1f8(,r8),r22
0x412630e8 <_dl_make_fptr+68>: ldw 4(,r20),r21
0x412630ec <_dl_make_fptr+72>: sub r3,r21,r21
0x412630f0 <_dl_make_fptr+76>: extrw,s r21,27,28,r21
0x412630f4 <_dl_make_fptr+80>: cmpb,<<= r22,r21,0x41263184 <_dl_make_fptr+224>
0x412630f8 <_dl_make_fptr+84>: depw,z r21,29,30,r9
0x412630fc <_dl_make_fptr+88>: add,l r9,r7,r21
0x41263100 <_dl_make_fptr+92>: ldw 0(,r21),r20
0x41263104 <_dl_make_fptr+96>: cmpib,<> 0,r20,0x41263150 <_dl_make_fptr+172>
0x41263108 <_dl_make_fptr+100>: copy r21,r3
0x4126310c <_dl_make_fptr+104>: copy r21,r6
0x41263110 <_dl_make_fptr+108>: addil 0,r19,%r1
0x41263114 <_dl_make_fptr+112>: ldw 5dc(,r1),r5
0x41263118 <_dl_make_fptr+116>: ldw 24(,r8),r20
0x4126311c <_dl_make_fptr+120>: copy r19,r4
0x41263120 <_dl_make_fptr+124>: copy r10,r26
0x41263124 <_dl_make_fptr+128>: b,l 0x41262fc4 <make_fdesc>,rp
0x41263128 <_dl_make_fptr+132>: ldw 4(,r20),r25
0x4126312c <_dl_make_fptr+136>: ldw 0(,r3),r20
0x41263130 <_dl_make_fptr+140>: cmpib,= 0,r20,0x4126317c <_dl_make_fptr+216>
0x41263134 <_dl_make_fptr+144>: copy r4,r19
0x41263138 <_dl_make_fptr+148>: ldw 4(,r5),r20
0x4126313c <_dl_make_fptr+152>: stw r20,0(,ret0)
0x41263140 <_dl_make_fptr+156>: stw ret0,4(,r5)
0x41263144 <_dl_make_fptr+160>: ldw 0(,r6),r20
0x41263148 <_dl_make_fptr+164>: cmpib,=,n 0,r20,0x4126311c <_dl_make_fptr+120>
0x4126314c <_dl_make_fptr+168>: ldw 24(,r8),r20
0x41263150 <_dl_make_fptr+172>: ldw r7(,r9),ret0
0x41263154 <_dl_make_fptr+176>: ldw -94(,sp),rp
0x41263158 <_dl_make_fptr+180>: ldw -7c(,sp),r9
0x4126315c <_dl_make_fptr+184>: ldw -78(,sp),r8
0x41263160 <_dl_make_fptr+188>: ldw -74(,sp),r7
0x41263164 <_dl_make_fptr+192>: ldw -70(,sp),r6
0x41263168 <_dl_make_fptr+196>: ldw -6c(,sp),r5
0x4126316c <_dl_make_fptr+200>: ldw -68(,sp),r4
0x41263170 <_dl_make_fptr+204>: ldw -64(,sp),r3
0x41263174 <_dl_make_fptr+208>: bv r0(rp)
0x41263178 <_dl_make_fptr+212>: ldw,mb -80(,sp),r10
0x4126317c <_dl_make_fptr+216>: b,l 0x41263150 <_dl_make_fptr+172>,r0
0x41263180 <_dl_make_fptr+220>: stw ret0,0(,r3)
0x41263184 <_dl_make_fptr+224>: addil 0,r19,%r1
0x41263188 <_dl_make_fptr+228>: ldi 0,r26
0x4126318c <_dl_make_fptr+232>: ldw 5e4(,r1),r1
0x41263190 <_dl_make_fptr+236>: copy r1,r23
0x41263194 <_dl_make_fptr+240>: ldi 0,r25
0x41263198 <_dl_make_fptr+244>: b,l 0x4125e4f8 <_dl_signal_error>,rp
0x4126319c <_dl_make_fptr+248>: ldi 0,r24
0x412631a0 <_dl_make_fptr+252>: ldw 2c(,r26),r21 <==== map->l_mach.fptr_table()
0x412631a4 <_dl_make_fptr+256>: ldw 30(,r26),r20
0x412631a8 <_dl_make_fptr+260>: addil 0,r19,%r1
0x412631ac <_dl_make_fptr+264>: copy r19,r4
0x412631b0 <_dl_make_fptr+268>: ldw 4(,r20),r22
0x412631b4 <_dl_make_fptr+272>: ldw 4(,r21),r26
0x412631b8 <_dl_make_fptr+276>: ldi 3,r24
0x412631bc <_dl_make_fptr+280>: ldi 12,r23
0x412631c0 <_dl_make_fptr+284>: ldw 44(,r8),r21
0x412631c4 <_dl_make_fptr+288>: sub r26,r22,r26
0x412631c8 <_dl_make_fptr+292>: ldw 654(,r1),r1
0x412631cc <_dl_make_fptr+296>: ldw 4(,r21),r25
0x412631d0 <_dl_make_fptr+300>: ldw 4(,r1),r20
0x412631d4 <_dl_make_fptr+304>: ldi -1,r21
0x412631d8 <_dl_make_fptr+308>: b,l 0x41265570 <$$divU>,r31
0x412631dc <_dl_make_fptr+312>: sub r0,r20,r22
0x412631e0 <_dl_make_fptr+316>: stw r21,-34(,sp)
0x412631e4 <_dl_make_fptr+320>: ldi 0,r26
0x412631e8 <_dl_make_fptr+324>: depw,z ret1,29,30,r5
0x412631ec <_dl_make_fptr+328>: stw r0,-38(,sp)
0x412631f0 <_dl_make_fptr+332>: copy ret1,r6
0x412631f4 <_dl_make_fptr+336>: add,l r5,r20,r20
0x412631f8 <_dl_make_fptr+340>: add,l r20,r21,r20
0x412631fc <_dl_make_fptr+344>: and r20,r22,r20
0x41263200 <_dl_make_fptr+348>: b,l 0x412641bc <__mmap>,rp
0x41263204 <_dl_make_fptr+352>: copy r20,r25
0x41263208 <_dl_make_fptr+356>: copy r4,r19
0x4126320c <_dl_make_fptr+360>: cmpib,= -1,ret0,0x4126323c <_dl_make_fptr+408>
0x41263210 <_dl_make_fptr+364>: copy ret0,r26
0x41263214 <_dl_make_fptr+368>: ldw 1fc(,r8),r20
0x41263218 <_dl_make_fptr+372>: cmpib,<>,n 0,r20,0x4126322c <_dl_make_fptr+392>
0x4126321c <_dl_make_fptr+376>: stw ret0,1fc(,r8)
0x41263220 <_dl_make_fptr+380>: stw r6,1f8(,r8)
0x41263224 <_dl_make_fptr+384>: b,l 0x412630e0 <_dl_make_fptr+60>,r0
0x41263228 <_dl_make_fptr+388>: ldw 1fc(,r8),r7 <==== return map->l_mach.fptr_table;
0x4126322c <_dl_make_fptr+392>: b,l 0x4126421c <munmap>,rp
0x41263230 <_dl_make_fptr+396>: copy r5,r25
0x41263234 <_dl_make_fptr+400>: b,l 0x41263224 <_dl_make_fptr+384>,r0
0x41263238 <_dl_make_fptr+404>: copy r4,r19
0x4126323c <_dl_make_fptr+408>: addil 0,r4,%r1
0x41263240 <_dl_make_fptr+412>: copy r1,r20
0x41263244 <_dl_make_fptr+416>: ldw 62c(,r20),r20
0x41263248 <_dl_make_fptr+420>: ldw 0(,r20),r26
0x4126324c <_dl_make_fptr+424>: addil 0,r4,%r1
0x41263250 <_dl_make_fptr+428>: ldw 5e8(,r1),r21
0x41263254 <_dl_make_fptr+432>: b,l 0x41263194 <_dl_make_fptr+240>,r0
0x41263258 <_dl_make_fptr+436>: copy r21,r23
[...]
and for gcc-3.4:
Dump of assembler code from 0x4128571c to 0x4128581c:
0x4128571c <_dl_make_fptr+76>: ldw 1fc(,r26),r6 <====[2]
0x41285720 <_dl_make_fptr+80>: cmpib,= 0,r6,0x412858f4 <_dl_make_fptr+548> <===='call' make_fptr_table()
0x41285724 <_dl_make_fptr+84>: copy r25,r3
0x41285728 <_dl_make_fptr+88>: ldw 1f8(,r26),ret1
0x4128572c <_dl_make_fptr+92>: ldw 30(,r10),r21
0x41285730 <_dl_make_fptr+96>: ldw 4(,r21),r20
0x41285734 <_dl_make_fptr+100>: sub r3,r20,r20
0x41285738 <_dl_make_fptr+104>: extrw,s r20,27,28,r7
0x4128573c <_dl_make_fptr+108>: cmpb,>>=,n r7,ret1,0x412859d0 <_dl_make_fptr+768>
0x41285740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
0x41285744 <_dl_make_fptr+116>: cmpib,<> 0,ret0,0x412857c8 <_dl_make_fptr+248>
0x41285748 <_dl_make_fptr+120>: addil 0,r19,%r1
0x4128574c <_dl_make_fptr+124>: depw,z r7,29,30,r11
0x41285750 <_dl_make_fptr+128>: ldw 638(,r1),r13
0x41285754 <_dl_make_fptr+132>: addil 0,r19,%r1
0x41285758 <_dl_make_fptr+136>: ldw 5c0(,r1),r5
0x4128575c <_dl_make_fptr+140>: addil 0,r19,%r1
0x41285760 <_dl_make_fptr+144>: ldo -78(sp),r14
0x41285764 <_dl_make_fptr+148>: ldw 610(,r1),r16
0x41285768 <_dl_make_fptr+152>: add,l r11,r6,r15
0x4128576c <_dl_make_fptr+156>: copy r5,r9
0x41285770 <_dl_make_fptr+160>: ldw 24(,r10),r20
0x41285774 <_dl_make_fptr+164>: ldw 4(,r20),r8
0x41285778 <_dl_make_fptr+168>: ldw 0(,r5),r3
0x4128577c <_dl_make_fptr+172>: ldw 4(,r3),r23
0x41285780 <_dl_make_fptr+176>: ldw 8(,r3),r20
0x41285784 <_dl_make_fptr+180>: cmpb,>>= r20,r23,0x4128580c <_dl_make_fptr+316>
0x41285788 <_dl_make_fptr+184>: ldo 1(r20),r22
0x4128578c <_dl_make_fptr+188>: ldw 8(,r3),r21
0x41285790 <_dl_make_fptr+192>: cmpb,<> r20,r21,0x41285780 <_dl_make_fptr+176>
0x41285794 <_dl_make_fptr+196>: shladd,l r21,3,r3,r20
0x41285798 <_dl_make_fptr+200>: stw r22,8(,r3)
0x4128579c <_dl_make_fptr+204>: ldo c(r20),r26
0x412857a0 <_dl_make_fptr+208>: stw r8,4(,r26)
0x412857a4 <_dl_make_fptr+212>: stw r12,0(,r26)
0x412857a8 <_dl_make_fptr+216>: ldw r11(,r6),r20
0x412857ac <_dl_make_fptr+220>: cmpib,=,n 0,r20,0x412858a8 <_dl_make_fptr+472>
0x412857b0 <_dl_make_fptr+224>: ldw 4(,r9),r20
0x412857b4 <_dl_make_fptr+228>: stw r20,0(,r26)
0x412857b8 <_dl_make_fptr+232>: stw r26,4(,r9)
0x412857bc <_dl_make_fptr+236>: ldw,s r7(,r6),ret0
0x412857c0 <_dl_make_fptr+240>: cmpib,=,n 0,ret0,0x41285774 <_dl_make_fptr+164>
0x412857c4 <_dl_make_fptr+244>: ldw 24(,r10),r20
0x412857c8 <_dl_make_fptr+248>: ldw -94(,sp),rp
0x412857cc <_dl_make_fptr+252>: ldw -74(,sp),r16
0x412857d0 <_dl_make_fptr+256>: ldw -70(,sp),r15
0x412857d4 <_dl_make_fptr+260>: ldw -6c(,sp),r14
0x412857d8 <_dl_make_fptr+264>: ldw -68(,sp),r13
0x412857dc <_dl_make_fptr+268>: ldw -64(,sp),r12
0x412857e0 <_dl_make_fptr+272>: ldw -60(,sp),r11
0x412857e4 <_dl_make_fptr+276>: ldw -5c(,sp),r10
0x412857e8 <_dl_make_fptr+280>: ldw -58(,sp),r9
0x412857ec <_dl_make_fptr+284>: ldw -54(,sp),r8
0x412857f0 <_dl_make_fptr+288>: ldw -50(,sp),r7
0x412857f4 <_dl_make_fptr+292>: ldw -4c(,sp),r6
0x412857f8 <_dl_make_fptr+296>: ldw -48(,sp),r5
0x412857fc <_dl_make_fptr+300>: ldw -44(,sp),r4
0x41285800 <_dl_make_fptr+304>: ldw -40(,sp),r3
0x41285804 <_dl_make_fptr+308>: bv r0(rp)
0x41285808 <_dl_make_fptr+312>: ldo -80(sp),sp
0x4128580c <_dl_make_fptr+316>: ldw 4(,r5),r20
0x41285810 <_dl_make_fptr+320>: cmpib,<>,n 0,r20,0x41285984 <_dl_make_fptr+692>
0x41285814 <_dl_make_fptr+324>: ldw 8(,r5),r21
0x41285818 <_dl_make_fptr+328>: depw,z r21,30,31,r20
Dump of assembler code from 0x412858f4 to 0x412859f4:
0x412858f4 <_dl_make_fptr+548>: ldw 30(,r26),r20 <==== map->l_mach.fptr_table()
0x412858f8 <_dl_make_fptr+552>: ldw 4(,r20),r21
0x412858fc <_dl_make_fptr+556>: addil 0,r19,%r1
0x41285900 <_dl_make_fptr+560>: copy r1,r22
0x41285904 <_dl_make_fptr+564>: ldw 2c(,r26),r20
0x41285908 <_dl_make_fptr+568>: ldw 4(,r20),r26
0x4128590c <_dl_make_fptr+572>: sub r26,r21,r26
0x41285910 <_dl_make_fptr+576>: ldw 44(,r10),r20
0x41285914 <_dl_make_fptr+580>: ldw 4(,r20),r25
0x41285918 <_dl_make_fptr+584>: b,l 0x41287d60 <$$divU>,r31
0x4128591c <_dl_make_fptr+588>: copy r19,r4
0x41285920 <_dl_make_fptr+592>: ldi -1,r20
0x41285924 <_dl_make_fptr+596>: stw r20,-34(,sp)
0x41285928 <_dl_make_fptr+600>: ldi 0,r26
0x4128592c <_dl_make_fptr+604>: ldw 638(,r22),r20
0x41285930 <_dl_make_fptr+608>: ldw 4(,r20),r25
0x41285934 <_dl_make_fptr+612>: depw,z ret1,29,30,r5
0x41285938 <_dl_make_fptr+616>: ldi 3,r24
0x4128593c <_dl_make_fptr+620>: sub r0,r25,r20
0x41285940 <_dl_make_fptr+624>: copy ret1,r6
0x41285944 <_dl_make_fptr+628>: stw r0,-38(,sp)
0x41285948 <_dl_make_fptr+632>: add,l r5,r25,r25
0x4128594c <_dl_make_fptr+636>: ldi 12,r23
0x41285950 <_dl_make_fptr+640>: ldo -1(r25),r25
0x41285954 <_dl_make_fptr+644>: b,l 0x412869a8 <__mmap>,rp
0x41285958 <_dl_make_fptr+648>: and r25,r20,r25
0x4128595c <_dl_make_fptr+652>: copy r4,r19
0x41285960 <_dl_make_fptr+656>: cmpib,= -1,ret0,0x412859e0 <_dl_make_fptr+784>
0x41285964 <_dl_make_fptr+660>: copy ret0,r26
0x41285968 <_dl_make_fptr+664>: ldw 1fc(,r10),r20
0x4128596c <_dl_make_fptr+668>: cmpib,<>,n 0,r20,0x412859a0 <_dl_make_fptr+720>
0x41285970 <_dl_make_fptr+672>: copy r6,ret1
0x41285974 <_dl_make_fptr+676>: stw r6,1f8(,r10)
0x41285978 <_dl_make_fptr+680>: ldw 1fc(,r10),r6
0x4128597c <_dl_make_fptr+684>: b,l 0x4128572c <_dl_make_fptr+92>,r0
0x41285980 <_dl_make_fptr+688>: stw ret0,1fc(,r10) <==== return map->l_mach.fptr_table;
0x41285984 <_dl_make_fptr+692>: copy r20,r26
0x41285988 <_dl_make_fptr+696>: ldw 0(,r20),r20
0x4128598c <_dl_make_fptr+700>: b,l 0x412857a0 <_dl_make_fptr+208>,r0
0x41285990 <_dl_make_fptr+704>: stw r20,4(,r5)
0x41285994 <_dl_make_fptr+708>: stw ret0,0(,r5)
0x41285998 <_dl_make_fptr+712>: b,l 0x412857a0 <_dl_make_fptr+208>,r0
0x4128599c <_dl_make_fptr+716>: ldo c(ret0),r26
0x412859a0 <_dl_make_fptr+720>: b,l 0x41286a04 <munmap>,rp
0x412859a4 <_dl_make_fptr+724>: copy r5,r25
0x412859a8 <_dl_make_fptr+728>: ldw 1f8(,r10),ret1
0x412859ac <_dl_make_fptr+732>: ldw 1fc(,r10),r6
0x412859b0 <_dl_make_fptr+736>: b,l 0x4128572c <_dl_make_fptr+92>,r0
0x412859b4 <_dl_make_fptr+740>: copy r4,r19
0x412859b8 <_dl_make_fptr+744>: addil 0,r4,%r1
0x412859bc <_dl_make_fptr+748>: ldw 0(,r16),r26
0x412859c0 <_dl_make_fptr+752>: ldw 5c4(,r1),r23
0x412859c4 <_dl_make_fptr+756>: ldi 0,r25
0x412859c8 <_dl_make_fptr+760>: b,l 0x41280f10 <_dl_signal_error>,rp
0x412859cc <_dl_make_fptr+764>: ldi 0,r24
0x412859d0 <_dl_make_fptr+768>: addil 0,r19,%r1
0x412859d4 <_dl_make_fptr+772>: ldi 0,r26
0x412859d8 <_dl_make_fptr+776>: b,l 0x412859c4 <_dl_make_fptr+756>,r0
0x412859dc <_dl_make_fptr+780>: ldw 5c8(,r1),r23
0x412859e0 <_dl_make_fptr+784>: addil 0,r4,%r1
0x412859e4 <_dl_make_fptr+788>: ldw 610(,r1),r20
0x412859e8 <_dl_make_fptr+792>: ldw 0(,r20),r26
0x412859ec <_dl_make_fptr+796>: addil 0,r4,%r1
0x412859f0 <_dl_make_fptr+800>: b,l 0x412859c4 <_dl_make_fptr+756>,r0
End of assembler dump.
I have to thought more on how to create a test case (all advise is always well come :) )
Joel
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* [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb
2004-09-06 20:26 ` Joel Soete
@ 2004-09-06 22:02 ` Carlos O'Donell
0 siblings, 0 replies; 10+ messages in thread
From: Carlos O'Donell @ 2004-09-06 22:02 UTC (permalink / raw)
To: Joel Soete; +Cc: parisc-linux
On Mon, Sep 06, 2004 at 08:26:57PM +0000, Joel Soete wrote:
> "atime has not changed"
>
> mmm may be that's logical:
> /dev/sda3 / xfs noatime
>
Yes. That is the reason for the failure.
c.
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [parisc-linux] stay the same with gcc-3.4.2 :( [was: back to glibc-2.3.3 & gcc-3.4.1 pb]
2004-09-06 21:49 ` Joel Soete
@ 2004-09-11 18:22 ` Joel Soete
2004-09-12 20:21 ` [parisc-linux] " Joel Soete
0 siblings, 1 reply; 10+ messages in thread
From: Joel Soete @ 2004-09-11 18:22 UTC (permalink / raw)
To: Joel Soete; +Cc: John David Anglin, parisc-linux
Hello all,
I didn't do much more because I was very busy elsewhere and also because of the announce of gcc-3.4.2.
I was hoping that it fix the pb but unfortunately it's not the case :(
I will so continue investigation ;)
See you latter,
Joel
Joel Soete wrote:
> Hello Dave,
>
> John David Anglin wrote:
>
>>> 0x411cc740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
>>> in:
>>> r7 == 0x7c4
>>> r6 == 0x0
>>
>>
>>
>> r6 is wrong. Find out why it is zero.
>>
> Far from being an expert, with help of ddd it seems that:
> ElfW(Addr)
> _dl_make_fptr (struct link_map *map, const ElfW(Sym) *sym,
> ElfW(Addr) ip)
> {
> ElfW(Addr) *ftab = map->l_mach.fptr_table; <====[2]
>
> (Elf32_Addr *)fptr_table == (Elf32_Addr *) 0x0
>
> (the same for gcc-3.3 ;) )
>
> is:
> Dump of assembler code from 0x411e371c to 0x411e381c:
> 0x411e371c <_dl_make_fptr+76>: ldw 1fc(,r26),r6 (r6 == 0x0)
>
> the weird stuff his in fact here:
>
> if (__builtin_expect (ftab == NULL, 0))
> ftab = make_fptr_table (map);
>
> with gcc-3.3 the register (r7) (which seems to me contains the value
> pointed by ftab) is well the one addressed by map->l_mach.fptr_table ie
> map->l_mach.fptr_table == 0x40001000 (and btw map->l_mach.fptr_table_len
> == 2067)
>
> OTC with gcc-3.4 the register (r6) after the 'call' of the inlined
> make_fptr_table() is restored to its starting value i.e.: 0x0
> eventhought that map->l_mach.fptr_table == 0x40001000 (and btw
> map->l_mach.fptr_table_len == 2067) exactly the same as gcc-3.3.
>
> duno if it could help:
> for gcc-3.3 the text is:
> Dump of assembler code from 0x412630d0 to 0x412631d0:
> 0x412630d0 <_dl_make_fptr+44>: ldw 1fc(,r26),r7 <====[2]
> 0x412630d4 <_dl_make_fptr+48>: copy r26,r8
> 0x412630d8 <_dl_make_fptr+52>: cmpib,= 0,r7,0x412631a0
> <_dl_make_fptr+252> <===='call' make_fptr_table()
> 0x412630dc <_dl_make_fptr+56>: copy r25,r3
> 0x412630e0 <_dl_make_fptr+60>: ldw 30(,r8),r20
> 0x412630e4 <_dl_make_fptr+64>: ldw 1f8(,r8),r22
> 0x412630e8 <_dl_make_fptr+68>: ldw 4(,r20),r21
> 0x412630ec <_dl_make_fptr+72>: sub r3,r21,r21
> 0x412630f0 <_dl_make_fptr+76>: extrw,s r21,27,28,r21
> 0x412630f4 <_dl_make_fptr+80>: cmpb,<<= r22,r21,0x41263184
> <_dl_make_fptr+224>
> 0x412630f8 <_dl_make_fptr+84>: depw,z r21,29,30,r9
> 0x412630fc <_dl_make_fptr+88>: add,l r9,r7,r21
> 0x41263100 <_dl_make_fptr+92>: ldw 0(,r21),r20
> 0x41263104 <_dl_make_fptr+96>: cmpib,<> 0,r20,0x41263150
> <_dl_make_fptr+172>
> 0x41263108 <_dl_make_fptr+100>: copy r21,r3
> 0x4126310c <_dl_make_fptr+104>: copy r21,r6
> 0x41263110 <_dl_make_fptr+108>: addil 0,r19,%r1
> 0x41263114 <_dl_make_fptr+112>: ldw 5dc(,r1),r5
> 0x41263118 <_dl_make_fptr+116>: ldw 24(,r8),r20
> 0x4126311c <_dl_make_fptr+120>: copy r19,r4
> 0x41263120 <_dl_make_fptr+124>: copy r10,r26
> 0x41263124 <_dl_make_fptr+128>: b,l 0x41262fc4 <make_fdesc>,rp
> 0x41263128 <_dl_make_fptr+132>: ldw 4(,r20),r25
> 0x4126312c <_dl_make_fptr+136>: ldw 0(,r3),r20
> 0x41263130 <_dl_make_fptr+140>: cmpib,= 0,r20,0x4126317c
> <_dl_make_fptr+216>
> 0x41263134 <_dl_make_fptr+144>: copy r4,r19
> 0x41263138 <_dl_make_fptr+148>: ldw 4(,r5),r20
> 0x4126313c <_dl_make_fptr+152>: stw r20,0(,ret0)
> 0x41263140 <_dl_make_fptr+156>: stw ret0,4(,r5)
> 0x41263144 <_dl_make_fptr+160>: ldw 0(,r6),r20
> 0x41263148 <_dl_make_fptr+164>: cmpib,=,n 0,r20,0x4126311c
> <_dl_make_fptr+120>
> 0x4126314c <_dl_make_fptr+168>: ldw 24(,r8),r20
> 0x41263150 <_dl_make_fptr+172>: ldw r7(,r9),ret0
> 0x41263154 <_dl_make_fptr+176>: ldw -94(,sp),rp
> 0x41263158 <_dl_make_fptr+180>: ldw -7c(,sp),r9
> 0x4126315c <_dl_make_fptr+184>: ldw -78(,sp),r8
> 0x41263160 <_dl_make_fptr+188>: ldw -74(,sp),r7
> 0x41263164 <_dl_make_fptr+192>: ldw -70(,sp),r6
> 0x41263168 <_dl_make_fptr+196>: ldw -6c(,sp),r5
> 0x4126316c <_dl_make_fptr+200>: ldw -68(,sp),r4
> 0x41263170 <_dl_make_fptr+204>: ldw -64(,sp),r3
> 0x41263174 <_dl_make_fptr+208>: bv r0(rp)
> 0x41263178 <_dl_make_fptr+212>: ldw,mb -80(,sp),r10
> 0x4126317c <_dl_make_fptr+216>: b,l 0x41263150 <_dl_make_fptr+172>,r0
> 0x41263180 <_dl_make_fptr+220>: stw ret0,0(,r3)
> 0x41263184 <_dl_make_fptr+224>: addil 0,r19,%r1
> 0x41263188 <_dl_make_fptr+228>: ldi 0,r26
> 0x4126318c <_dl_make_fptr+232>: ldw 5e4(,r1),r1
> 0x41263190 <_dl_make_fptr+236>: copy r1,r23
> 0x41263194 <_dl_make_fptr+240>: ldi 0,r25
> 0x41263198 <_dl_make_fptr+244>: b,l 0x4125e4f8 <_dl_signal_error>,rp
> 0x4126319c <_dl_make_fptr+248>: ldi 0,r24
> 0x412631a0 <_dl_make_fptr+252>: ldw 2c(,r26),r21 <====
> map->l_mach.fptr_table()
> 0x412631a4 <_dl_make_fptr+256>: ldw 30(,r26),r20
> 0x412631a8 <_dl_make_fptr+260>: addil 0,r19,%r1
> 0x412631ac <_dl_make_fptr+264>: copy r19,r4
> 0x412631b0 <_dl_make_fptr+268>: ldw 4(,r20),r22
> 0x412631b4 <_dl_make_fptr+272>: ldw 4(,r21),r26
> 0x412631b8 <_dl_make_fptr+276>: ldi 3,r24
> 0x412631bc <_dl_make_fptr+280>: ldi 12,r23
> 0x412631c0 <_dl_make_fptr+284>: ldw 44(,r8),r21
> 0x412631c4 <_dl_make_fptr+288>: sub r26,r22,r26
> 0x412631c8 <_dl_make_fptr+292>: ldw 654(,r1),r1
> 0x412631cc <_dl_make_fptr+296>: ldw 4(,r21),r25
> 0x412631d0 <_dl_make_fptr+300>: ldw 4(,r1),r20
> 0x412631d4 <_dl_make_fptr+304>: ldi -1,r21
> 0x412631d8 <_dl_make_fptr+308>: b,l 0x41265570 <$$divU>,r31
> 0x412631dc <_dl_make_fptr+312>: sub r0,r20,r22
> 0x412631e0 <_dl_make_fptr+316>: stw r21,-34(,sp)
> 0x412631e4 <_dl_make_fptr+320>: ldi 0,r26
> 0x412631e8 <_dl_make_fptr+324>: depw,z ret1,29,30,r5
> 0x412631ec <_dl_make_fptr+328>: stw r0,-38(,sp)
> 0x412631f0 <_dl_make_fptr+332>: copy ret1,r6
> 0x412631f4 <_dl_make_fptr+336>: add,l r5,r20,r20
> 0x412631f8 <_dl_make_fptr+340>: add,l r20,r21,r20
> 0x412631fc <_dl_make_fptr+344>: and r20,r22,r20
> 0x41263200 <_dl_make_fptr+348>: b,l 0x412641bc <__mmap>,rp
> 0x41263204 <_dl_make_fptr+352>: copy r20,r25
> 0x41263208 <_dl_make_fptr+356>: copy r4,r19
> 0x4126320c <_dl_make_fptr+360>: cmpib,= -1,ret0,0x4126323c
> <_dl_make_fptr+408>
> 0x41263210 <_dl_make_fptr+364>: copy ret0,r26
> 0x41263214 <_dl_make_fptr+368>: ldw 1fc(,r8),r20
> 0x41263218 <_dl_make_fptr+372>: cmpib,<>,n 0,r20,0x4126322c
> <_dl_make_fptr+392>
> 0x4126321c <_dl_make_fptr+376>: stw ret0,1fc(,r8)
> 0x41263220 <_dl_make_fptr+380>: stw r6,1f8(,r8)
> 0x41263224 <_dl_make_fptr+384>: b,l 0x412630e0 <_dl_make_fptr+60>,r0
> 0x41263228 <_dl_make_fptr+388>: ldw 1fc(,r8),r7 <==== return
> map->l_mach.fptr_table;
> 0x4126322c <_dl_make_fptr+392>: b,l 0x4126421c <munmap>,rp
> 0x41263230 <_dl_make_fptr+396>: copy r5,r25
> 0x41263234 <_dl_make_fptr+400>: b,l 0x41263224 <_dl_make_fptr+384>,r0
> 0x41263238 <_dl_make_fptr+404>: copy r4,r19
> 0x4126323c <_dl_make_fptr+408>: addil 0,r4,%r1
> 0x41263240 <_dl_make_fptr+412>: copy r1,r20
> 0x41263244 <_dl_make_fptr+416>: ldw 62c(,r20),r20
> 0x41263248 <_dl_make_fptr+420>: ldw 0(,r20),r26
> 0x4126324c <_dl_make_fptr+424>: addil 0,r4,%r1
> 0x41263250 <_dl_make_fptr+428>: ldw 5e8(,r1),r21
> 0x41263254 <_dl_make_fptr+432>: b,l 0x41263194 <_dl_make_fptr+240>,r0
> 0x41263258 <_dl_make_fptr+436>: copy r21,r23
> [...]
>
> and for gcc-3.4:
> Dump of assembler code from 0x4128571c to 0x4128581c:
> 0x4128571c <_dl_make_fptr+76>: ldw 1fc(,r26),r6 <====[2]
> 0x41285720 <_dl_make_fptr+80>: cmpib,= 0,r6,0x412858f4
> <_dl_make_fptr+548> <===='call' make_fptr_table()
> 0x41285724 <_dl_make_fptr+84>: copy r25,r3
> 0x41285728 <_dl_make_fptr+88>: ldw 1f8(,r26),ret1
> 0x4128572c <_dl_make_fptr+92>: ldw 30(,r10),r21
> 0x41285730 <_dl_make_fptr+96>: ldw 4(,r21),r20
> 0x41285734 <_dl_make_fptr+100>: sub r3,r20,r20
> 0x41285738 <_dl_make_fptr+104>: extrw,s r20,27,28,r7
> 0x4128573c <_dl_make_fptr+108>: cmpb,>>=,n r7,ret1,0x412859d0
> <_dl_make_fptr+768>
> 0x41285740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
> 0x41285744 <_dl_make_fptr+116>: cmpib,<> 0,ret0,0x412857c8
> <_dl_make_fptr+248>
> 0x41285748 <_dl_make_fptr+120>: addil 0,r19,%r1
> 0x4128574c <_dl_make_fptr+124>: depw,z r7,29,30,r11
> 0x41285750 <_dl_make_fptr+128>: ldw 638(,r1),r13
> 0x41285754 <_dl_make_fptr+132>: addil 0,r19,%r1
> 0x41285758 <_dl_make_fptr+136>: ldw 5c0(,r1),r5
> 0x4128575c <_dl_make_fptr+140>: addil 0,r19,%r1
> 0x41285760 <_dl_make_fptr+144>: ldo -78(sp),r14
> 0x41285764 <_dl_make_fptr+148>: ldw 610(,r1),r16
> 0x41285768 <_dl_make_fptr+152>: add,l r11,r6,r15
> 0x4128576c <_dl_make_fptr+156>: copy r5,r9
> 0x41285770 <_dl_make_fptr+160>: ldw 24(,r10),r20
> 0x41285774 <_dl_make_fptr+164>: ldw 4(,r20),r8
> 0x41285778 <_dl_make_fptr+168>: ldw 0(,r5),r3
> 0x4128577c <_dl_make_fptr+172>: ldw 4(,r3),r23
> 0x41285780 <_dl_make_fptr+176>: ldw 8(,r3),r20
> 0x41285784 <_dl_make_fptr+180>: cmpb,>>= r20,r23,0x4128580c
> <_dl_make_fptr+316>
> 0x41285788 <_dl_make_fptr+184>: ldo 1(r20),r22
> 0x4128578c <_dl_make_fptr+188>: ldw 8(,r3),r21
> 0x41285790 <_dl_make_fptr+192>: cmpb,<> r20,r21,0x41285780
> <_dl_make_fptr+176>
> 0x41285794 <_dl_make_fptr+196>: shladd,l r21,3,r3,r20
> 0x41285798 <_dl_make_fptr+200>: stw r22,8(,r3)
> 0x4128579c <_dl_make_fptr+204>: ldo c(r20),r26
> 0x412857a0 <_dl_make_fptr+208>: stw r8,4(,r26)
> 0x412857a4 <_dl_make_fptr+212>: stw r12,0(,r26)
> 0x412857a8 <_dl_make_fptr+216>: ldw r11(,r6),r20
> 0x412857ac <_dl_make_fptr+220>: cmpib,=,n 0,r20,0x412858a8
> <_dl_make_fptr+472>
> 0x412857b0 <_dl_make_fptr+224>: ldw 4(,r9),r20
> 0x412857b4 <_dl_make_fptr+228>: stw r20,0(,r26)
> 0x412857b8 <_dl_make_fptr+232>: stw r26,4(,r9)
> 0x412857bc <_dl_make_fptr+236>: ldw,s r7(,r6),ret0
> 0x412857c0 <_dl_make_fptr+240>: cmpib,=,n 0,ret0,0x41285774
> <_dl_make_fptr+164>
> 0x412857c4 <_dl_make_fptr+244>: ldw 24(,r10),r20
> 0x412857c8 <_dl_make_fptr+248>: ldw -94(,sp),rp
> 0x412857cc <_dl_make_fptr+252>: ldw -74(,sp),r16
> 0x412857d0 <_dl_make_fptr+256>: ldw -70(,sp),r15
> 0x412857d4 <_dl_make_fptr+260>: ldw -6c(,sp),r14
> 0x412857d8 <_dl_make_fptr+264>: ldw -68(,sp),r13
> 0x412857dc <_dl_make_fptr+268>: ldw -64(,sp),r12
> 0x412857e0 <_dl_make_fptr+272>: ldw -60(,sp),r11
> 0x412857e4 <_dl_make_fptr+276>: ldw -5c(,sp),r10
> 0x412857e8 <_dl_make_fptr+280>: ldw -58(,sp),r9
> 0x412857ec <_dl_make_fptr+284>: ldw -54(,sp),r8
> 0x412857f0 <_dl_make_fptr+288>: ldw -50(,sp),r7
> 0x412857f4 <_dl_make_fptr+292>: ldw -4c(,sp),r6
> 0x412857f8 <_dl_make_fptr+296>: ldw -48(,sp),r5
> 0x412857fc <_dl_make_fptr+300>: ldw -44(,sp),r4
> 0x41285800 <_dl_make_fptr+304>: ldw -40(,sp),r3
> 0x41285804 <_dl_make_fptr+308>: bv r0(rp)
> 0x41285808 <_dl_make_fptr+312>: ldo -80(sp),sp
> 0x4128580c <_dl_make_fptr+316>: ldw 4(,r5),r20
> 0x41285810 <_dl_make_fptr+320>: cmpib,<>,n 0,r20,0x41285984
> <_dl_make_fptr+692>
> 0x41285814 <_dl_make_fptr+324>: ldw 8(,r5),r21
> 0x41285818 <_dl_make_fptr+328>: depw,z r21,30,31,r20
>
> Dump of assembler code from 0x412858f4 to 0x412859f4:
> 0x412858f4 <_dl_make_fptr+548>: ldw 30(,r26),r20 <====
> map->l_mach.fptr_table()
> 0x412858f8 <_dl_make_fptr+552>: ldw 4(,r20),r21
> 0x412858fc <_dl_make_fptr+556>: addil 0,r19,%r1
> 0x41285900 <_dl_make_fptr+560>: copy r1,r22
> 0x41285904 <_dl_make_fptr+564>: ldw 2c(,r26),r20
> 0x41285908 <_dl_make_fptr+568>: ldw 4(,r20),r26
> 0x4128590c <_dl_make_fptr+572>: sub r26,r21,r26
> 0x41285910 <_dl_make_fptr+576>: ldw 44(,r10),r20
> 0x41285914 <_dl_make_fptr+580>: ldw 4(,r20),r25
> 0x41285918 <_dl_make_fptr+584>: b,l 0x41287d60 <$$divU>,r31
> 0x4128591c <_dl_make_fptr+588>: copy r19,r4
> 0x41285920 <_dl_make_fptr+592>: ldi -1,r20
> 0x41285924 <_dl_make_fptr+596>: stw r20,-34(,sp)
> 0x41285928 <_dl_make_fptr+600>: ldi 0,r26
> 0x4128592c <_dl_make_fptr+604>: ldw 638(,r22),r20
> 0x41285930 <_dl_make_fptr+608>: ldw 4(,r20),r25
> 0x41285934 <_dl_make_fptr+612>: depw,z ret1,29,30,r5
> 0x41285938 <_dl_make_fptr+616>: ldi 3,r24
> 0x4128593c <_dl_make_fptr+620>: sub r0,r25,r20
> 0x41285940 <_dl_make_fptr+624>: copy ret1,r6
> 0x41285944 <_dl_make_fptr+628>: stw r0,-38(,sp)
> 0x41285948 <_dl_make_fptr+632>: add,l r5,r25,r25
> 0x4128594c <_dl_make_fptr+636>: ldi 12,r23
> 0x41285950 <_dl_make_fptr+640>: ldo -1(r25),r25
> 0x41285954 <_dl_make_fptr+644>: b,l 0x412869a8 <__mmap>,rp
> 0x41285958 <_dl_make_fptr+648>: and r25,r20,r25
> 0x4128595c <_dl_make_fptr+652>: copy r4,r19
> 0x41285960 <_dl_make_fptr+656>: cmpib,= -1,ret0,0x412859e0
> <_dl_make_fptr+784>
> 0x41285964 <_dl_make_fptr+660>: copy ret0,r26
> 0x41285968 <_dl_make_fptr+664>: ldw 1fc(,r10),r20
> 0x4128596c <_dl_make_fptr+668>: cmpib,<>,n 0,r20,0x412859a0
> <_dl_make_fptr+720>
> 0x41285970 <_dl_make_fptr+672>: copy r6,ret1
> 0x41285974 <_dl_make_fptr+676>: stw r6,1f8(,r10)
> 0x41285978 <_dl_make_fptr+680>: ldw 1fc(,r10),r6
> 0x4128597c <_dl_make_fptr+684>: b,l 0x4128572c <_dl_make_fptr+92>,r0
> 0x41285980 <_dl_make_fptr+688>: stw ret0,1fc(,r10) <==== return
> map->l_mach.fptr_table;
> 0x41285984 <_dl_make_fptr+692>: copy r20,r26
> 0x41285988 <_dl_make_fptr+696>: ldw 0(,r20),r20
> 0x4128598c <_dl_make_fptr+700>: b,l 0x412857a0 <_dl_make_fptr+208>,r0
> 0x41285990 <_dl_make_fptr+704>: stw r20,4(,r5)
> 0x41285994 <_dl_make_fptr+708>: stw ret0,0(,r5)
> 0x41285998 <_dl_make_fptr+712>: b,l 0x412857a0 <_dl_make_fptr+208>,r0
> 0x4128599c <_dl_make_fptr+716>: ldo c(ret0),r26
> 0x412859a0 <_dl_make_fptr+720>: b,l 0x41286a04 <munmap>,rp
> 0x412859a4 <_dl_make_fptr+724>: copy r5,r25
> 0x412859a8 <_dl_make_fptr+728>: ldw 1f8(,r10),ret1
> 0x412859ac <_dl_make_fptr+732>: ldw 1fc(,r10),r6
> 0x412859b0 <_dl_make_fptr+736>: b,l 0x4128572c <_dl_make_fptr+92>,r0
> 0x412859b4 <_dl_make_fptr+740>: copy r4,r19
> 0x412859b8 <_dl_make_fptr+744>: addil 0,r4,%r1
> 0x412859bc <_dl_make_fptr+748>: ldw 0(,r16),r26
> 0x412859c0 <_dl_make_fptr+752>: ldw 5c4(,r1),r23
> 0x412859c4 <_dl_make_fptr+756>: ldi 0,r25
> 0x412859c8 <_dl_make_fptr+760>: b,l 0x41280f10 <_dl_signal_error>,rp
> 0x412859cc <_dl_make_fptr+764>: ldi 0,r24
> 0x412859d0 <_dl_make_fptr+768>: addil 0,r19,%r1
> 0x412859d4 <_dl_make_fptr+772>: ldi 0,r26
> 0x412859d8 <_dl_make_fptr+776>: b,l 0x412859c4 <_dl_make_fptr+756>,r0
> 0x412859dc <_dl_make_fptr+780>: ldw 5c8(,r1),r23
> 0x412859e0 <_dl_make_fptr+784>: addil 0,r4,%r1
> 0x412859e4 <_dl_make_fptr+788>: ldw 610(,r1),r20
> 0x412859e8 <_dl_make_fptr+792>: ldw 0(,r20),r26
> 0x412859ec <_dl_make_fptr+796>: addil 0,r4,%r1
> 0x412859f0 <_dl_make_fptr+800>: b,l 0x412859c4 <_dl_make_fptr+756>,r0
> End of assembler dump.
>
> I have to thought more on how to create a test case (all advise is
> always well come :) )
>
> Joel
> _______________________________________________
> parisc-linux mailing list
> parisc-linux@lists.parisc-linux.org
> http://lists.parisc-linux.org/mailman/listinfo/parisc-linux
>
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^ permalink raw reply [flat|nested] 10+ messages in thread
* [parisc-linux] Re: stay the same with gcc-3.4.2 :( [was: back to glibc-2.3.3 & gcc-3.4.1 pb]
2004-09-11 18:22 ` [parisc-linux] stay the same with gcc-3.4.2 :( [was: back to glibc-2.3.3 & gcc-3.4.1 pb] Joel Soete
@ 2004-09-12 20:21 ` Joel Soete
0 siblings, 0 replies; 10+ messages in thread
From: Joel Soete @ 2004-09-12 20:21 UTC (permalink / raw)
To: John David Anglin, Carlos O'Donell; +Cc: parisc-linux
Hello all,
Continuing investigation:
>> Hello Dave,
>>
>> John David Anglin wrote:
>>
>>>> 0x411cc740 <_dl_make_fptr+112>: ldw,s r7(,r6),ret0
>>>> in:
>>>> r7 == 0x7c4
>>>> r6 == 0x0
>>>
>>>
>>>
>>>
>>> r6 is wrong. Find out why it is zero.
>>>
>> Far from being an expert, with help of ddd it seems that:
>> ElfW(Addr)
>> _dl_make_fptr (struct link_map *map, const ElfW(Sym) *sym,
>> ElfW(Addr) ip)
>> {
>> ElfW(Addr) *ftab = map->l_mach.fptr_table; <====[2]
>>
[...]
>> the weird stuff his in fact here:
>>
>> if (__builtin_expect (ftab == NULL, 0))
>> ftab = make_fptr_table (map); <================[3]
>>
>> symtab = (const void *) D_PTR (map, l_info[DT_SYMTAB]);
>> symidx = sym - symtab; <=========================[1]
>>
>> if (symidx >= map->l_mach.fptr_table_len)
>> _dl_signal_error (0, NULL, NULL,
>> N_("internal error: symidx out of range of fptr table"));
>>
>> while (ftab[symidx] == 0) <========================[4]
Finaly it seems that two things hapened wronly in gcc-3.4 at those tags [3] & [4]:
comparing side by side the asm form of this chunk:
gcc-3.3 | gcc-3.4
======= | =======
ldw 1fc(,r26),r7 | ldw 1fc(,r26),r6 <====[2]
ftab == r7 == 0x0 | ftab == r6 == 0x0
|
copy r26,r8 |
cmpib,= 0,r7,0x412631a0 <_dl_make_fptr+252> | cmpib,= 0,r6,0x412858f4 <_dl_make_fptr+548> <====[3]'call' make_fptr_table()
r7 == 0x40001000 | r6 == 0x0
|
copy r25,r3 | copy r25,r3
ldw 30(,r8),r20 | ldw 1f8(,r26),ret1
ldw 1f8(,r8),r22 | ldw 30(,r10),r21
ldw 4(,r20),r21 | ldw 4(,r21),r20
|
r3 == 0x4026d1c4 (== sym) | r3 == 0x40037cdc (== sym);
r21 == 0x40265164 (== symtab) | r20 == 0x4003009c (== symtab)
sub r3,r21,r21 | sub r3,r20,r20 <====[1]
r21 == 0x8060 | r20 == 0x7c40
|
extrw,s r21,27,28,r21 | extrw,s r20,27,28,r7
[== r21 >> 4] | [r7 = r20 >> 4]
r21 == 0x806 | r7 == 0x7c4
|
r22 == 0x813 | ret1 (aka r29) == 0x7d1 (== map->l_mach.fptr_table_len)
(r22 == map->l_mach.fptr_table_len) | (ret1 == map->l_mach.fptr_table_len)
cmpb,<<= r22,r21,0x41263184 <_dl_make_fptr+224> | cmpb,>>=,n r7,ret1,0x412859d0 <_dl_make_fptr+768>
depw,z r21,29,30,r9 |
[r9 = r21 << 2] |
r9 == 0x2018 |
|
add,l r9,r7,r21 |
r21 == 0x40003018 |
|
ldw 0(,r21),r20 | ldw,s r7(,r6),ret0 <====[4] (i.e. ftab[symidx])
cmpib,<> 0,r20,0x41263150 <_dl_make_fptr+172> | cmpib,<> 0,ret0,0x4104aa38 <_dl_make_fptr+248>
Here I agreed that the code could be (assuming that r6 == fatb) ldw,s r7(,r6),ret0 but need at least 'depw,z r7,29,30,r7' before
[...]
ldw 2c(,r26),r21 | ldw 30(,r26),r20 <==== make_fptr_table()
ldw 30(,r26),r20 | ldw 4(,r20),r21
addil 0,r19,%r1 | addil 0,r19,%r1
copy r19,r4 | copy r1,r22
ldw 4(,r20),r22 | ldw 2c(,r26),r20
ldw 4(,r21),r26 | ldw 4(,r20),r26
ldi 3,r24 | sub r26,r21,r26
ldi 12,r23 | ldw 44(,r10),r20
ldw 44(,r8),r21 | ldw 4(,r20),r25
sub r26,r22,r26 | b,l 0x41287d60 <$$divU>,r31
ldw 654(,r1),r1 | copy r19,r4
ldw 4(,r21),r25 | ldi -1,r20
ldw 4(,r1),r20 | stw r20,-34(,sp)
ldi -1,r21 | ldi 0,r26
b,l 0x41265570 <$$divU>,r31 | ldw 638(,r22),r20
sub r0,r20,r22 | ldw 4(,r20),r25
stw r21,-34(,sp) | depw,z ret1,29,30,r5
ldi 0,r26 | ldi 3,r24
depw,z ret1,29,30,r5 | sub r0,r25,r20
stw r0,-38(,sp) | copy ret1,r6
copy ret1,r6 | stw r0,-38(,sp)
add,l r5,r20,r20 | add,l r5,r25,r25
add,l r20,r21,r20 | ldi 12,r23
and r20,r22,r20 | ldo -1(r25),r25
b,l 0x412641bc <__mmap>,rp | b,l 0x412869a8 <__mmap>,rp
copy r20,r25 | and r25,r20,r25
copy r4,r19 | copy r4,r19
cmpib,= -1,ret0,0x4126323c <_dl_make_fptr+408> | cmpib,= -1,ret0,0x412859e0 <_dl_make_fptr+784>
copy ret0,r26 | copy ret0,r26
| (ret0 == 0x40001000)
ldw 1fc(,r8),r20 | ldw 1fc(,r10),r20
cmpib,<>,n 0,r20,0x4126322c <_dl_make_fptr+392> | cmpib,<>,n 0,r20,0x412859a0 <_dl_make_fptr+720>
| copy r6,ret1
| (ret1 == 0x815)
stw ret0,1fc(,r8) (a) | stw r6,1f8(,r10) (d)
stw r6,1f8(,r8) (b) | ldw 1fc(,r10),r6 (e) <==== ????
b,l 0x412630e0 <_dl_make_fptr+60>,r0 | b,l 0x4128572c <_dl_make_fptr+92>,r0
ldw 1fc(,r8),r7 (c) | stw ret0,1fc(,r10) (f) <==== make_fptr_table()'s return
hmmm here I have the feeling that (d) (e) and (f) were wrongly re-ordered;
if they have the similar order as (f) (d) and (e), r6 == ftab would be loaded by the right value 0x40001000?
That said I didn't reach to produce a test case reporducing that fact :(
Do you think that if I transmit those explanations (may be a bit completed for gcc-3.3 example) with the precompile (-E) code, it
could be enough to fill in a br near gcc team?
TIA,
Joel
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^ permalink raw reply [flat|nested] 10+ messages in thread
end of thread, other threads:[~2004-09-12 20:21 UTC | newest]
Thread overview: 10+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
[not found] <413B3845.1050302@tiscali.be>
[not found] ` <200409060239.i862dAh2001466@hiauly1.hia.nrc.ca>
2004-09-06 19:58 ` [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb Carlos O'Donell
2004-09-06 21:49 ` Joel Soete
2004-09-11 18:22 ` [parisc-linux] stay the same with gcc-3.4.2 :( [was: back to glibc-2.3.3 & gcc-3.4.1 pb] Joel Soete
2004-09-12 20:21 ` [parisc-linux] " Joel Soete
[not found] <413B222D.8040601@tiscali.be>
2004-09-06 2:47 ` [parisc-linux] Re: back to glibc-2.3.3 & gcc-3.4.1 pb John David Anglin
2004-09-06 19:57 ` Carlos O'Donell
2004-09-06 3:02 ` John David Anglin
2004-09-02 19:34 [parisc-linux] " Joel Soete
[not found] ` <20040903154019.GR32474@baldric.uwo.ca>
[not found] ` <4138B043.2020009@tiscali.be>
[not found] ` <20040904162953.GE32474@baldric.uwo.ca>
[not found] ` <413AE748.3030207@tiscali.be>
[not found] ` <413AFB1F.7010407@tiscali.be>
2004-09-06 20:03 ` [parisc-linux] " Carlos O'Donell
2004-09-06 20:26 ` Joel Soete
2004-09-06 22:02 ` Carlos O'Donell
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