From: Brad Boyer <flar@allandria.com>
To: Eero Tamminen <oak@helsinkinet.fi>
Cc: debian-68k@lists.debian.org,
linux-m68k <linux-m68k@lists.linux-m68k.org>
Subject: Re: instrumentation, was Re: core dump analysis
Date: Sat, 15 Apr 2023 14:56:51 -0700 [thread overview]
Message-ID: <20230415215651.GA24321@allandria.com> (raw)
In-Reply-To: <eb1e55b6-7633-6100-667d-88029433e4c6@helsinkinet.fi>
On Sat, Apr 15, 2023 at 06:50:08PM +0300, Eero Tamminen wrote:
> I'm a bit surprised how many functions (symbol addresses) start with link.w
> instruction, instead of e.g. move* instruction.
That seems pretty normal to me. The LINK instruction sets up a stack
frame for a function. It takes an address register and size (the .w
suffix indicates a 16-bit size, while .l would indicate a 32-bit value
of size). The old value of the register is pushed to the stack, the
current stack pointer is saved into the given register, then the stack
is increased by the given size. There is a corresponding UNLK
instruction to tear down the stack frame which will frequently be the
last instruction before returning to the caller. The compiler will use
these in the function prologue and epilogue in all but the most
trivial functions.
Brad Boyer
flar@allandria.com
next prev parent reply other threads:[~2023-04-15 21:57 UTC|newest]
Thread overview: 134+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4a9c1d0d-07aa-792e-921f-237d5a30fc44.ref@yahoo.com>
[not found] ` <4a9c1d0d-07aa-792e-921f-237d5a30fc44@yahoo.com>
2023-01-30 10:12 ` stack smashing detected Geert Uytterhoeven
2023-01-31 3:05 ` Michael Schmitz
[not found] ` <af524ac9-f5af-e9fb-e33f-0884a0ebfcb6@yahoo.com>
2023-02-01 18:51 ` Michael Schmitz
2023-02-02 7:52 ` Geert Uytterhoeven
[not found] ` <8fb2aa62-dcec-9bd0-b8da-00d9bb4ddaba@yahoo.com>
2023-02-03 0:15 ` Michael Schmitz
2023-02-05 22:19 ` Michael Schmitz
[not found] ` <33d7ea3e-9bd2-16e4-4d9a-f7aa5657a0f7@yahoo.com>
2023-02-07 22:58 ` Michael Schmitz
2023-02-09 3:41 ` Michael Schmitz
[not found] ` <c01e2f1c-425f-478d-918e-cd1fd37e0008@yahoo.com>
[not found] ` <aee359a6-b5e0-fbe2-3988-779f8601f106@gmail.com>
[not found] ` <8042d988-6dd9-8170-60e9-cdf19118440f@yahoo.com>
[not found] ` <a8f06e4b-db28-c8f9-5e21-3ea0f3eebacd@linux-m68k.org>
[not found] ` <bb27b393-3d02-f42c-5c7f-c27d4936ece9@linux-m68k.org>
[not found] ` <37da2ca2-dd99-8417-7cae-a88e2e7fc1b6@yahoo.com>
[not found] ` <30a1be59-a1fd-f882-1072-c7db8734b1f1@gmail.com>
[not found] ` <39f79c2d-e803-d7b1-078f-8757ca9b1238@yahoo.com>
[not found] ` <c47abfdc-31c8-e7ed-1c14-90f68710f25d@gmail.com>
[not found] ` <040ad66a-71dd-001b-0446-36cbd6547b37@yahoo.com>
[not found] ` <5b9d64bb-2adc-20a2-f596-f99bf255b5cc@linux-m68k.org>
[not found] ` <56bd9a33-c58a-58e0-3956-e63c61abe5fe@yahoo.com>
[not found] ` <1725f7c1-2084-a404-653d-9e9f8bbe961c@linux-m68k.org>
2023-03-28 3:37 ` core dump analysis, was " Finn Thain
2023-03-31 3:33 ` Finn Thain
2023-04-01 9:27 ` Finn Thain
2023-04-01 10:11 ` Andreas Schwab
2023-04-02 10:46 ` Finn Thain
2023-04-02 22:01 ` Michael Schmitz
2023-04-04 0:13 ` Finn Thain
2023-04-04 23:22 ` Michael Schmitz
2023-04-05 2:00 ` Finn Thain
2023-04-07 1:57 ` Michael Schmitz
2023-04-07 4:03 ` dash behaviour, was Re: core dump analysis Finn Thain
2023-04-07 12:10 ` Geert Uytterhoeven
2023-04-08 5:29 ` Finn Thain
2023-04-09 8:30 ` Geert Uytterhoeven
2023-04-09 3:48 ` Michael Schmitz
2023-04-09 4:42 ` Finn Thain
2023-04-09 4:55 ` Michael Schmitz
2023-04-09 7:32 ` Finn Thain
2023-04-10 8:12 ` Michael Schmitz
2023-04-10 9:39 ` kernel behaviour, was Re: dash behaviour Finn Thain
2023-04-11 4:29 ` Michael Schmitz
2023-04-11 4:50 ` Finn Thain
2023-04-11 7:21 ` Geert Uytterhoeven
2023-04-07 12:06 ` core dump analysis, was Re: stack smashing detected Geert Uytterhoeven
2023-04-09 1:56 ` Michael Schmitz
2023-04-11 0:20 ` instrumentation, was Re: core dump analysis Finn Thain
2023-04-11 4:56 ` Michael Schmitz
2023-04-11 5:54 ` Finn Thain
2023-04-11 7:19 ` Geert Uytterhoeven
2023-04-11 8:24 ` Michael Schmitz
2023-04-12 23:22 ` Eero Tamminen
2023-04-15 15:50 ` Eero Tamminen
2023-04-15 21:56 ` Brad Boyer [this message]
2023-04-14 9:30 ` core dump analysis, was Re: stack smashing detected Finn Thain
2023-04-16 1:50 ` Michael Schmitz
2023-04-16 6:44 ` Finn Thain
2023-04-17 23:32 ` Michael Schmitz
2023-04-18 2:04 ` Finn Thain
2023-04-18 5:29 ` Michael Schmitz
2023-04-19 1:50 ` Finn Thain
2023-04-19 8:15 ` Michael Schmitz
2023-04-23 7:46 ` Finn Thain
2023-04-23 21:26 ` Michael Schmitz
2023-04-19 10:50 ` reliable reproducer, was Re: core dump analysis Finn Thain
2023-04-19 11:55 ` Geert Uytterhoeven
2023-04-20 1:02 ` Finn Thain
2023-04-20 0:55 ` Michael Schmitz
2023-04-20 2:57 ` Finn Thain
2023-04-20 4:08 ` Michael Schmitz
2023-04-20 5:17 ` Finn Thain
2023-04-20 5:48 ` Finn Thain
2023-04-20 7:34 ` Michael Schmitz
2023-04-20 7:47 ` Finn Thain
2023-04-20 8:23 ` Michael Schmitz
2023-04-20 8:55 ` Finn Thain
2023-04-20 21:58 ` Michael Schmitz
2023-04-21 1:45 ` Michael Schmitz
2023-04-21 5:52 ` Michael Schmitz
2023-04-21 8:30 ` Finn Thain
2023-04-21 9:18 ` Michael Schmitz
2023-04-22 7:54 ` Michael Schmitz
2023-04-22 8:07 ` Andreas Schwab
2023-04-22 8:16 ` Michael Schmitz
2023-04-22 10:12 ` Andreas Schwab
2023-04-22 18:24 ` Michael Schmitz
2023-04-22 18:38 ` Andreas Schwab
2023-04-22 20:06 ` Michael Schmitz
2023-04-22 20:46 ` Andreas Schwab
2023-04-23 1:41 ` Michael Schmitz
2023-04-23 7:37 ` Andreas Schwab
2023-04-23 8:18 ` Michael Schmitz
2023-04-23 8:23 ` Andreas Schwab
2023-04-23 20:19 ` Michael Schmitz
2023-04-23 21:48 ` Andreas Schwab
2023-04-24 3:51 ` Michael Schmitz
2023-04-24 5:46 ` Michael Schmitz
2023-04-23 9:23 ` Finn Thain
2023-04-23 20:43 ` Michael Schmitz
2023-04-24 23:44 ` Finn Thain
[not found] ` <1d9955d2-6016-a238-142a-887f95465dd8@linux-m68k.org>
[not found] ` <4763c8e2-6fb3-eda6-10d0-94ed1d01cd60@gmail.com>
[not found] ` <a5d70bac-bd00-7131-9ca0-18976f539adf@linux-m68k.org>
[not found] ` <b150c146-cade-bcd3-9c34-d99284dcd153@gmail.com>
[not found] ` <c3d2d874-e366-1d3b-71b0-7a089d40308a@linux-m68k.org>
2023-04-25 1:55 ` signal delivery, was Re: reliable reproducer Finn Thain
2023-04-25 2:32 ` Michael Schmitz
2023-04-25 5:59 ` Michael Schmitz
2023-04-26 19:45 ` Michael Schmitz
[not found] ` <1c4fc19f-ad9b-7b8f-6638-8b026fe1280b@linux-m68k.org>
[not found] ` <5ac55169-4916-d671-489f-7eb8fb85d336@gmail.com>
[not found] ` <9544ef26-a444-e186-fb1e-0e914acd36af@gmail.com>
[not found] ` <20de24b3-098d-4603-2768-b0468a4fe772@gmail.com>
[not found] ` <69565abb-1cd6-716e-046e-5a6d69a4e617@linux-m68k.org>
[not found] ` <89cb2211-5f6e-07a2-3149-1ad1ad887265@linux-m68k.org>
[not found] ` <d3d27369-8532-ba69-2463-66b8decbee67@gmail.com>
[not found] ` <4b4eacf2-6934-5563-fb47-04843a77a35c@gmail.com>
2023-04-29 0:28 ` Finn Thain
2023-04-29 0:53 ` Finn Thain
2023-04-29 2:53 ` Michael Schmitz
2023-04-29 5:03 ` Finn Thain
2023-04-29 6:01 ` Michael Schmitz
2023-04-29 6:13 ` Finn Thain
2023-04-29 6:43 ` Michael Schmitz
2023-04-29 6:05 ` Finn Thain
2023-04-29 7:11 ` Andreas Schwab
2023-04-29 7:37 ` Michael Schmitz
2023-04-25 9:26 ` Eero Tamminen
2023-04-25 11:25 ` Andreas Schwab
2023-04-25 19:46 ` Michael Schmitz
2023-04-26 1:54 ` Michael Schmitz
2023-04-26 3:27 ` Finn Thain
2023-04-26 3:56 ` Michael Schmitz
2023-04-26 4:53 ` Finn Thain
2023-04-26 2:02 ` Finn Thain
2023-04-26 4:00 ` Michael Schmitz
2023-04-26 4:42 ` Finn Thain
2023-04-26 9:10 ` Michael Schmitz
2023-04-26 21:48 ` Brad Boyer
2023-04-26 8:31 ` Andreas Schwab
2023-04-25 11:53 ` Andreas Schwab
2023-04-26 1:59 ` Finn Thain
2023-04-25 5:18 ` reliable reproducer, was Re: core dump analysis Michael Schmitz
2023-04-22 9:00 ` Michael Schmitz
2023-04-21 1:15 ` Finn Thain
2023-04-21 1:57 ` Michael Schmitz
2023-04-21 1:39 ` Finn Thain
2023-04-20 6:04 ` Finn Thain
2023-04-20 7:40 ` Michael Schmitz
2023-04-20 7:58 ` Finn Thain
2023-04-02 4:09 ` core dump analysis, was Re: stack smashing detected Michael Schmitz
2023-04-02 9:31 ` Finn Thain
2023-04-03 8:26 ` Michael Schmitz
2023-04-04 4:05 ` Finn Thain
2023-04-04 11:05 ` Finn Thain
2023-04-09 4:02 ` Finn Thain
2023-02-03 23:39 ` Finn Thain
[not found] ` <86badf6e-2cc8-1937-1a2f-45334bb338f4@yahoo.com>
2023-02-05 22:29 ` Debian initramfs/initrd, was " Finn Thain
2023-02-05 23:18 ` John Paul Adrian Glaubitz
[not found] ` <8107e04f-fd60-c6e3-2bad-cc0d99877967@yahoo.com>
2023-02-06 7:52 ` Geert Uytterhoeven
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