From: Mark H Weaver <mhw@netris.org>
To: 24703@debbugs.gnu.org
Subject: bug#24703: Store references in 8-byte chunks in compiled code
Date: Sun, 16 Oct 2016 06:15:04 -0400 [thread overview]
Message-ID: <8760ossiqf.fsf@netris.org> (raw)
In-Reply-To: <87d1j0sl1l.fsf@netris.org> (Mark H. Weaver's message of "Sun, 16 Oct 2016 05:25:10 -0400")
Here's what happens with a variant of 'unixodbc' with one character
removed from its name, to make an odd number of characters. The last
character 'c' is all by itself. The chunks of the reference
/gnu/store/il1bn7n0l4yj3idrii23fhvzg4nn939i-unxodbc-2.3.4/etc
are found in the following order:
1_/gnu/sto
2_________________________________________________________4/et
3_________re/il1bn
4_________________7n0l4yj3
5_________________________idrii23f
6_________________________________hvzg4nn9
7_________________________________________39i-unxo
8_________________________________________________dbc-2.3.
9_____________________________________________________________c
======== /gnu/store/y2dwj5vkbxka7y5rlakprbk4k8vrd5ij-unxodbc-2.3.4/lib/libodbcinst.so.2.0.0
8238: 48 b8 2f 67 6e 75 2f movabs $0x6f74732f756e672f,%rax ; "/gnu/sto"
823f: 73 74 6f
8242: c7 05 6c fa 20 00 34 movl $0x74652f34,0x20fa6c(%rip) ; "4/et"
8249: 2f 65 74
824c: c7 05 2e 0a 21 00 01 movl $0x1,0x210a2e(%rip)
8253: 00 00 00
8256: 48 89 05 23 fa 20 00 mov %rax,0x20fa23(%rip)
825d: 48 b8 72 65 2f 69 6c movabs $0x6e62316c692f6572,%rax ; "re/il1bn"
8264: 31 62 6e
8267: 48 8d 1d 5a 94 00 00 lea 0x945a(%rip),%rbx
826e: 48 89 05 13 fa 20 00 mov %rax,0x20fa13(%rip)
8275: 48 b8 37 6e 30 6c 34 movabs $0x336a79346c306e37,%rax ; "7n0l4yj3"
827c: 79 6a 33
827f: 48 89 05 0a fa 20 00 mov %rax,0x20fa0a(%rip)
8286: 48 b8 69 64 72 69 69 movabs $0x6633326969726469,%rax ; "idrii23f"
828d: 32 33 66
8290: 48 89 05 01 fa 20 00 mov %rax,0x20fa01(%rip)
8297: 48 b8 68 76 7a 67 34 movabs $0x396e6e34677a7668,%rax ; "hvzg4nn9"
829e: 6e 6e 39
82a1: 48 89 05 f8 f9 20 00 mov %rax,0x20f9f8(%rip)
82a8: 48 b8 33 39 69 2d 75 movabs $0x6f786e752d693933,%rax ; "39i-unxo"
82af: 6e 78 6f
82b2: 48 89 05 ef f9 20 00 mov %rax,0x20f9ef(%rip)
82b9: 48 b8 64 62 63 2d 32 movabs $0x2e332e322d636264,%rax ; "dbc-2.3."
82c0: 2e 33 2e
82c3: 48 89 05 e6 f9 20 00 mov %rax,0x20f9e6(%rip)
82ca: b8 63 00 00 00 mov $0x63,%eax ; "c"
82cf: 66 89 05 e6 f9 20 00 mov %ax,0x20f9e6(%rip)
next prev parent reply other threads:[~2016-10-16 10:16 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-16 3:49 bug#24703: fontconfig keeps obfuscated reference to itself, not grafted Mark H Weaver
2016-10-16 4:26 ` Mark H Weaver
2016-10-16 5:00 ` Mark H Weaver
2016-10-16 6:24 ` bug#24703: Store references in 8-byte chunks in compiled code Mark H Weaver
2016-10-16 9:03 ` Mark H Weaver
2016-10-16 9:25 ` Mark H Weaver
2016-10-16 10:15 ` Mark H Weaver [this message]
2016-10-16 19:04 ` Ludovic Courtès
2016-10-17 7:46 ` bug#24703: " Török Edwin
2016-10-17 9:42 ` Mark H Weaver
2016-10-17 12:09 ` Ludovic Courtès
2016-10-18 3:36 ` Mark H Weaver
2016-10-18 8:59 ` Ludovic Courtès
2016-10-31 6:35 ` Mark H Weaver
2016-10-31 11:37 ` Ludovic Courtès
2016-10-24 19:40 ` Leo Famulari
2016-10-24 20:18 ` Ludovic Courtès
2016-11-04 23:15 ` Ludovic Courtès
2016-11-05 18:36 ` Leo Famulari
2016-11-06 20:58 ` Ludovic Courtès
2016-11-09 20:40 ` Ludovic Courtès
2016-11-09 23:16 ` Leo Famulari
2016-11-10 8:01 ` Ludovic Courtès
2017-04-02 22:19 ` Ludovic Courtès
2016-11-11 10:39 ` Ludovic Courtès
2016-10-19 21:25 ` Török Edwin
2016-10-20 12:25 ` Ludovic Courtès
2016-10-16 14:42 ` bug#24703: fontconfig keeps obfuscated reference to itself, not grafted Ludovic Courtès
2016-10-16 15:06 ` Ludovic Courtès
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