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Re: unexelf.c failure on IRIX


From: David Kaelbling
Subject: Re: unexelf.c failure on IRIX
Date: Mon, 26 Nov 2001 11:28:23 -0500

Dave Love wrote:
> 
> What version of the developments tools is this with?

I tried both 7.3.1.3m and 7.2.1.3m on IRIX 6.5.14f.


> The list of ELF sections it's producing might be worth knowing (via
> `elfdump' if I remember correctly).

[fw] 77> elfdump -brief emacs-21.1.diffbuild/src/temacs

emacs-21.1.diffbuild/src/temacs:

          **** SECTION  HEADER  TABLE ****
[No]   Type                  Addr       Offset     Size        Name
       Link       Info       Adralgn    Entsize    Flags

[1]    SHT_PROGBITS          0x10000114 0x114      0x15        .interp
       0          0          0x4        0          0x00000002 ALLOC 

[2]    SHT_MIPS_REGINFO      0x100001b0 0x1b0      0x18        .reginfo
       0          0          0x4        0x18       0x00000002 ALLOC 

[3]    SHT_DYNAMIC           0x100001c8 0x1c8      0x1a0       .dynamic
       6          0          0x4        0x8        0x00000002 ALLOC 

[4]    SHT_MIPS_LIBLIST      0x10000368 0x368      0x12c       .liblist
       6          0xf        0x4        0x14       0x00000002 ALLOC 

[5]    SHT_STRTAB            0x10000494 0x494      0x14602     .dynstr
       0          0          0x4        0          0x00000002 ALLOC 

[6]    SHT_HASH              0x10014a98 0x14a98    0xcdc4      .hash
       8          0          0x4        0x4        0x00000002 ALLOC 

[7]    SHT_DYNSYM            0x1002185c 0x2185c    0x136f0     .dynsym
       6          0x14       0x4        0x10       0x00000002 ALLOC 

[8]    SHT_MIPS_MSYM         0x100363f4 0x363f4    0x9b78      .msym
       6          0xa        0x4        0x8        0x00000002 ALLOC 

[9]    SHT_MIPS_CONFLICT     0x1003ff6c 0x3ff6c    0x4c        .conflict
       8          0          0x4        0x4        0x00000002 ALLOC 

[10]   SHT_PROGBITS          0x100413fc 0x413fc    0x18436c    .text
       0          0          0x4        0x4        0x00000006 ALLOC
EXECINSTR 

[11]   SHT_PROGBITS          0x101c5768 0x1c5768   0x18        .init
       0          0          0x4        0x4        0x00000006 ALLOC
EXECINSTR 

[12]   SHT_PROGBITS          0x101d8000 0x1c8000   0x13dc3     .rodata
       0          0          0x8        0          0x00000003 WRITE
ALLOC 

[13]   SHT_PROGBITS          0x101ebdc8 0x1dbdc8   0x78d0      .data
       0          0          0x8        0          0x00000003 WRITE
ALLOC 

[14]   SHT_PROGBITS          0x101f3698 0x1e3698   0x432c      .got
       0          0          0x4        0x4        0x10000003 WRITE
ALLOC GPREL 

[15]   SHT_PROGBITS          0x101f79c8 0x1e79c8   0x554       .sbss
       0          0          0x8        0          0x10000003 WRITE
ALLOC GPREL 

[16]   SHT_PROGBITS          0x101f7f20 0x1e7f20   0x100       .lit8
       0          0          0x8        0x8        0x10000003 WRITE
ALLOC GPREL 

[17]   SHT_PROGBITS          0x101f8020 0x1e8020   0x1bd5      .srdata
       0          0          0x8        0          0x10000002 ALLOC
GPREL 

[18]   SHT_PROGBITS          0x101f9bf8 0x1e9bf8   0x44        .sdata
       0          0          0x8        0          0x10000003 WRITE
ALLOC GPREL 

[19]   SHT_PROGBITS          0x101f9c3c 0x1e9c3c   0xc         .lit4
       0          0          0x4        0x4        0x10000003 WRITE
ALLOC GPREL 

[20]   SHT_NOBITS            0x101f9c50 0x1e9c48   0xe5044     .bss
       0          0          0x10       0          0x00000003 WRITE
ALLOC 

[21]   SHT_PROGBITS          0          0x42b514   0xbee       .comment
       0          0          0x4        0          0x00000000 

[22]   SHT_STRTAB            0          0x45665f   0x1c7       .shstrtab
       0          0          0          0          0x00000000 


The "elfdump -Dg" output is very long.  Here's the start and end of it:

[fw] 78> elfdump -Dg emacs-21.1.diffbuild/src/temacs

emacs-21.1.diffbuild/src/temacs:


                        ***GLOBAL OFFSET TABLE SECTION***
                Index   Content  gp_reladdr   Address
.got
        [         0]: 0x0fb602ac -32752(gp), 0x101f3698

Local pages for segment 0x10000000 to 0x101c6000
        [         1]: 0x10040000 -32748(gp), 0x101f369c
        [         2]: 0x10050000 -32744(gp), 0x101f36a0
        [         3]: 0x10060000 -32740(gp), 0x101f36a4
        [         4]: 0x10070000 -32736(gp), 0x101f36a8
        [         5]: 0x10080000 -32732(gp), 0x101f36ac
        [         6]: 0x10090000 -32728(gp), 0x101f36b0
        [         7]: 0x100a0000 -32724(gp), 0x101f36b4
        [         8]: 0x100b0000 -32720(gp), 0x101f36b8
        [         9]: 0x100c0000 -32716(gp), 0x101f36bc
        [        10]: 0x100d0000 -32712(gp), 0x101f36c0
        [        11]: 0x100e0000 -32708(gp), 0x101f36c4
        [        12]: 0x100f0000 -32704(gp), 0x101f36c8
        [        13]: 0x10100000 -32700(gp), 0x101f36cc
        [        14]: 0x10110000 -32696(gp), 0x101f36d0
        [        15]: 0x10120000 -32692(gp), 0x101f36d4
        [        16]: 0x10130000 -32688(gp), 0x101f36d8
        [        17]: 0x10140000 -32684(gp), 0x101f36dc
        [        18]: 0x10150000 -32680(gp), 0x101f36e0
        [        19]: 0x10160000 -32676(gp), 0x101f36e4
        [        20]: 0x10170000 -32672(gp), 0x101f36e8
...
        [      4269]: 0x102deb7c -15676(gp), 0x101f794c
[Vcomposition_function_table]
        [      4270]: 0x102deb80 -15672(gp), 0x101f7950
[Qcomposition_function_table]
        [      4271]: 0x102deb84 -15668(gp), 0x101f7954
[composition_temp]
        [      4272]: 0x102deb88 -15664(gp), 0x101f7958 [UP]
        [      4273]: 0x102deb8c -15660(gp), 0x101f795c [BC]
        [      4274]: 0x102deb90 -15656(gp), 0x101f7960 [PC]
        [      4275]: 0x102deb98 -15652(gp), 0x101f7964 [__malloc_hook]
        [      4276]: 0x102deb9c -15648(gp), 0x101f7968 [_heapbase]
        [      4277]: 0x102deba0 -15644(gp), 0x101f796c [_heapinfo]
        [      4278]: 0x102deba4 -15640(gp), 0x101f7970 [_heapindex]
        [      4279]: 0x102deba8 -15636(gp), 0x101f7974 [_heaplimit]
        [      4280]: 0x102debb0 -15632(gp), 0x101f7978 [_fraghead]
        [      4281]: 0x102dec10 -15628(gp), 0x101f797c [_chunks_used]
        [      4282]: 0x102dec14 -15624(gp), 0x101f7980 [_bytes_used]
        [      4283]: 0x102dec18 -15620(gp), 0x101f7984 [_chunks_free]
        [      4284]: 0x102dec1c -15616(gp), 0x101f7988 [_bytes_free]
        [      4285]: 0x102dec20 -15612(gp), 0x101f798c
[__malloc_initialized]
        [      4286]: 0x102dec24 -15608(gp), 0x101f7990
[__malloc_extra_blocks]
        [      4287]: 0x102dec28 -15604(gp), 0x101f7994
[__malloc_initialize_hook]
        [      4288]: 0x102dec2c -15600(gp), 0x101f7998
[__after_morecore_hook]
        [      4289]: 0x102dec30 -15596(gp), 0x101f799c [__free_hook]
        [      4290]: 0x102dec34 -15592(gp), 0x101f79a0
[_aligned_blocks]
        [      4291]: 0x102dec38 -15588(gp), 0x101f79a4 [__realloc_hook]
        [      4292]: 0x102dec3c -15584(gp), 0x101f79a8
[__memalign_hook]
        [      4293]: 0x102dec40 -15580(gp), 0x101f79ac
[update_hints_inhibit]
        [      4294]: 0x102dec70 -15576(gp), 0x101f79b0 [__Argc]
        [      4295]: 0x102dec90 -15572(gp), 0x101f79b4 [__Argv]
        [      4296]: 0x00000000 -15568(gp), 0x101f79b8 []
        [      4297]: 0x00000000 -15564(gp), 0x101f79bc []
        [      4298]: 0x00000000 -15560(gp), 0x101f79c0 []


> Is there any reason .got should be treated specially on Irix versus
> other ELF platforms?

Sorry, I don't know.  All I can say is this way worked!

        David

-- 
David KAELBLING <address@hidden>            Silicon Graphics Computer Systems
1 Cabot Rd, suite 250; Hudson, MA 01749     781.839.2157, fax ...2357



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