Re: Learning ARM machine code

From	Harriet Bazley <harriet@bazleyfamily.co.uk>
Newsgroups	comp.sys.acorn.programmer
Subject	Re: Learning ARM machine code
Date	2025-04-13 18:27 +0100
Organization	A noiseless patient Spider
Message-ID	<56b9040d5c.harriet@bazleyfamily.co.uk> (permalink)
References	<5c0c6984e5bavariasound@chiemgau-net.de>

Show all headers | View raw

On 12 Apr 2025 as I do recall,
          Alexander Ausserstorfer  wrote:

> In the book 'Raspberry Pi Assembly Language RISC OS Beginners' von Bruce
> Smith I'M missing the links to the ARM machine code. I want to see the
> commands in hex or binary values and want to be able to calculate it by
> myself.
> 
> Is there another book or anything else you can recommend?
> 
StrongED can disassemble ARM code instructions for you in Dump mode, so
technically speaking you can use the BBC BASIC built-in assembler (I
assume the Bruce Smith book gives instructions for that?), save out the
area of memory into which you have assembled your code, and inspect it
in StrongED in order to see the hex values.

If you look inside !Textseek.Resources you will find the file 'detoken',
for example, which is just raw machine code that gets loaded and
executed by the BASIC !RunImage.  It doesn't have any kind of executable
header or anything, so you can load that directly into Dump mode and
select the ASM button to ask StrongED to interpret it as assembly
language, which will display the assembler instructions in one column
and the raw hex values (and ASCII equivalents) in another.  The 0101
button will do the same, but displaying the raw values as binary rather
than hex.

e.g.
0000001C : E92D5FFE : ____ : STMDB   R13!,{R1-R12,R14}
00000020 : E24FC024 : ____ : ADR     R12,&00000004      ; ADR -> &00000004
00000024 : E28E704C : ____ : ADD     R7,R14,#&4C        ; ="L"
00000028 : E58C7010 : ____ : STR     R7,[R12,#16]
0000002C : E1A0E00C : ____ : MOV     R14,R12
00000030 : E59E0004 : ____ : LDR     R0,[R14,#4]
00000034 : E5900000 : ____ : LDR     R0,[R0,#0]
00000038 : E280C001 : ____ : ADD     R12,R0,#1
0000003C : E08CA002 : ____ : ADD     R10,R12,R2
00000040 : E59E0014 : ____ : LDR     R0,[R14,#20]
00000044 : E590B000 : ____ : LDR     R11,[R0,#0]
00000048 : E28BB001 : ____ : ADD     R11,R11,#1
0000004C : E1A0600B : ____ : MOV     R6,R11

(upper-bit-set characters in the third column blanked out in case it
messes up the formatting)


-- 
Harriet Bazley                     ==  Loyaulte me lie ==

The attacker must vanquish; the defender need only survive.

Back to comp.sys.acorn.programmer | Previous | Next — Previous in thread | Next in thread | Find similar

Thread

Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-04-12 15:11 +0200
  Re: Learning ARM machine code Harriet Bazley <harriet@bazleyfamily.co.uk> - 2025-04-13 18:27 +0100
    Re: Learning ARM machine code Jean-Michel <jmc.bruck@orange.fr> - 2025-04-14 11:40 +0200
  Re: Learning ARM machine code Theo <theom+news@chiark.greenend.org.uk> - 2025-04-14 17:56 +0100
    Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-07 17:08 +0200
      Re: Learning ARM machine code Sebastian Barthel <naitsabes@freenet.de> - 2025-06-09 13:04 +0000
        Re: Learning ARM machine code Theo <theom+news@chiark.greenend.org.uk> - 2025-06-09 17:36 +0100
          Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-10 18:11 +0200
            Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-14 17:58 +0200
              Re: Learning ARM machine code Martin <News03@avisoft.f9.co.uk> - 2025-06-14 17:54 +0100
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-06-19 06:31 +0200
                Re: Learning ARM machine code Martin <News03@avisoft.f9.co.uk> - 2025-06-19 10:09 +0100
                Re: Learning ARM machine code Jean-Michel <jmc.bruck@orange.fr> - 2025-06-19 11:32 +0200
              Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-11-02 16:42 +0200
                Re: Learning ARM machine code Martin <News03@avisoft.f9.co.uk> - 2025-11-02 17:01 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-11-15 14:55 +0200
                Re: Learning ARM machine code druck <news@druck.org.uk> - 2025-11-17 19:08 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-11-15 15:11 +0200
                Re: Learning ARM machine code Harriet Bazley <harriet@bazleyfamily.co.uk> - 2025-11-15 19:46 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-12-06 17:57 +0200
                Re: Learning ARM machine code Martin <News04@avisoft.f9.co.uk> - 2025-12-06 18:15 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-12-07 16:25 +0200
                Re: Learning ARM machine code Martin <News04@avisoft.f9.co.uk> - 2025-12-07 15:57 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-12-21 17:13 +0200
                Re: Learning ARM machine code druck <news@druck.org.uk> - 2025-12-22 20:02 +0000
                Re: Learning ARM machine code Paul Sprangers <Paul@sprie.nl> - 2025-12-22 23:32 +0100
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2026-01-06 14:42 +0200
                Re: Learning ARM machine code anonymouse <na@ignoreme.com> - 2026-01-06 15:02 +0000
                Re: Learning ARM machine code Jean-Michel <jmc.bruck@orange.fr> - 2025-12-08 10:23 +0100
                Re: Learning ARM machine code Harriet Bazley <harriet@bazleyfamily.co.uk> - 2025-12-06 20:06 +0000
                Re: Learning ARM machine code druck <news@druck.org.uk> - 2025-12-09 08:21 +0000
                Re: Learning ARM machine code Martin <News04@avisoft.f9.co.uk> - 2025-12-09 09:48 +0000
                Re: Learning ARM machine code Richard Ashbery <basura@invalid.addr.uk> - 2025-12-09 10:54 +0000
                Re: Learning ARM machine code Steve Fryatt <news@stevefryatt.org.uk> - 2025-11-15 23:46 +0000
                Re: Learning ARM machine code Theo <theom+news@chiark.greenend.org.uk> - 2025-11-16 11:59 +0000
                Re: Learning ARM machine code Alexander Ausserstorfer <bavariasound@chiemgau-net.de> - 2025-12-06 18:10 +0200
                Re: Learning ARM machine code Steve Fryatt <news@stevefryatt.org.uk> - 2025-12-07 12:18 +0000
          Re: Learning ARM machine code Sebastian Barthel <naitsabes@freenet.de> - 2025-06-10 18:37 +0000

csiph-web