execute function from dos.library

Foul · 08 August 2012, 13:30

hi !

I would like to use this function. if i'm not wrong, it can execute any prog.

it's code is : (http://amigadev.elowar.com/read/ADCD.../node015E.html)

Code:

success = Execute( commandString, input, output )
	   D0		   D1		 D2	 D3

Code:

 INPUTS
	commandString - pointer to a null-terminated string
	input	      - BCPL pointer to a file handle
	output	      - BCPL pointer to a file handle

    RESULTS
	success - BOOLEAN indicating whether Execute was successful
		  in finding and starting the specified program.  Note this
		  is NOT the return code of the command(s).

how can i run it ? (dos.library already opened)

Code:

move.l exec,d1
move.l file1,d2
move.l file2,d3


exec: "my prog",0
file1 : 0
file2: 0

Leffmann · 08 August 2012, 16:09

Like this:

Code:

include include/dos/dos_lib.i

move.l  #exec, d1
moveq   #0, d2
moveq   #0, d3
move.l  dosbase, a6
jsr     _LVOExecute(a6)

ASM-One and ASM-Pro have always been a complete mess when it comes to system calls because of poor, missing or multiple system header files floating around, so if it doesn't work remove the include line and type jsr -222(a6) instead.

Foul · 08 August 2012, 16:19

already declared execute = -222 at the beginning..

was just missing : move.l dosbase,a6 ,all the rest was correct...

Thank you

Foul · 08 August 2012, 16:49

uhmm another prob:

if

exec: dc.l "myprog.exe",0

then only .exe is ran

Leffmann · 08 August 2012, 17:55

You need to use dc.b to define strings, with dc.l it will truncate to a longword and only keep the last 4 bytes. But it's partly ASM-Pro's fault for not warning about these things. Use a proper assembler

Foul · 08 August 2012, 17:56

Quote:

Originally Posted by Leffmann

You need to use dc.b to define strings, with dc.l it will truncate to a longword and only keep the last 4 bytes.

Found 30sec before you post lol ...

thx again

08 August 2012, 16:09	#2
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	Like this: Code: include include/dos/dos_lib.i move.l #exec, d1 moveq #0, d2 moveq #0, d3 move.l dosbase, a6 jsr _LVOExecute(a6) ASM-One and ASM-Pro have always been a complete mess when it comes to system calls because of poor, missing or multiple system header files floating around, so if it doesn't work remove the include line and type jsr -222(a6) instead.

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08 August 2012, 16:19	#3
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 49 Posts: 1,516	already declared execute = -222 at the beginning.. was just missing : move.l dosbase,a6 ,all the rest was correct... Thank you

08 August 2012, 16:49	#4
Foul Registered User Join Date: Jun 2009 Location: Perigueux/France Age: 49 Posts: 1,516	uhmm another prob: if exec: dc.l "myprog.exe",0 then only .exe is ran

08 August 2012, 17:55	#5
Leffmann Join Date: Jul 2008 Location: Sweden Posts: 2,269	You need to use dc.b to define strings, with dc.l it will truncate to a longword and only keep the last 4 bytes. But it's partly ASM-Pro's fault for not warning about these things. Use a proper assembler

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