AsmPro sources question(s)

Asman · 08 June 2009, 15:47

Hi

Some days ago I looked into AsmPro sources ( v 1.17 ) and I find something which I don't understand. At lines 363-364 (ASMPro.s )there is

Code:

	move.l	4(sp),d0
	MOVE.L	D0,StackSize

Maybe someone can answer when/why (4,sp) contains "stack size".
As I know when program starts from CLI then I can obtain stack size from pr_StackSize. Maybe there is a bug in ASMPro.s ???

edit:
After analyzation of AsmPro.s I think that above sp point to sp obtained at begin of source. I think. Maybe it's kind of trick used in kick1.3 or something. I've no idea.
Regards

StingRay · 08 June 2009, 16:02

Quote:

Originally Posted by Asman

Hi

Code:

    move.l    4(sp),d0
    MOVE.L    D0,StackSize

Maybe someone can answer when/why (4,sp) contains "stack size".

Stacksize is a commandline parameter so it probably just restores the parameter with the 4(sp),d0. Didn't check the source though.

Quote:

Originally Posted by Asman

Maybe there is a bug in ASMPro.s ???

One bug?

Make that "shitloads of bugs"!

Asman · 08 June 2009, 16:15

Quote:

Originally Posted by StingRay

Stacksize is a commandline parameter

Ohhh....Thanks a lot for that information I didn't know that.

Regards

Asman · 09 June 2009, 11:29

Quote:

Originally Posted by StingRay

Stacksize is a commandline parameter so it probably just restores the parameter with the 4(sp),d0. Didn't check the source though.

Clarification.
I checked this again, with basm debugger and read docs ( AmigaDOSManual.guide ) about initial environment in assembler ( When you load a program under a Shell ) and .... (4,sp) contains size of the stack in bytes.

Regards

pmc · 09 June 2009, 11:47

Watcha Asman. Hope you're well.

Quote:

Originally Posted by Asman

(4,sp) contains size of the stack in bytes.

Good to know, cheers.

Asman · 09 June 2009, 12:18

Hi pmc,

For clarification. I talking about situation when you load a program under a Shell then (4,sp) contains size of the stack in bytes. I don't know what happen with sp when program started from WB.

cheers

Wepl · 12 June 2009, 23:45

there are more values (registers/stack) which have defined values when started from cli, most of them are required to run bcpl programs. also some compilers use them for their startup code (e.g. manx).
you can find infos in the guru book from ralph babel about this.

CmdrVimes · 03 September 2010, 11:24

Quote:

Originally Posted by StingRay

SOne bug?

Make that "shitloads of bugs"!

That's interesting. Can I ask which ASM dev apps you would recommend?

pmc · 03 September 2010, 11:35

Sting will only recommend AsmOne and AsmPro cos he knows what all the bugs are and how to work round them and loves the software.

I also think they're excellent in that they have very useful functions - especially for writing binaries and writing to disk etc. but I prefer Devpac for the actual assembling of my code.

I write the code in Ultraedit on PC though - can't be using Amiga assembler's editors now that I'm used to a more modern text editor I'm afraid.

CmdrVimes · 03 September 2010, 11:48

@pmc
Yeah, I am just having a look at Devpac myself. It is probably worth me pointing out that I know sod all assembler. The last time I looked at any was back at university - we had a 68k module on the course and a lab full of Atari ST1040s to code on. That was far too many years ago though.

Please Note: I may ask some really stupid/obvious questions. You have been warned.

pmc · 03 September 2010, 11:50

No worries man - there are no stupid questions.

The coding forums are here, so ask away.

StingRay · 03 September 2010, 11:57

Quote:

Originally Posted by CmdrVimes

That's interesting. Can I ask which ASM dev apps you would recommend?

As PMC said, I'd recommend AsmOne/Pro since despite the bugs it's a very convenient package. Also, for a beginner it is perfect (IMHO of course) since it is very easy and fast to use. And it handles the "simple" things quite well, i.e. you'll only experience bugs when you start more complex stuff.

CmdrVimes · 03 September 2010, 12:05

@StingRay
Any input from you more experienced coders is welcome.

On a sort of slightly connected note, I wonder if one of you can point me in the right direction here. I am running my stuff on a WinUAE emulated A1200 and everything seems to be ok except that the keyboard mappings are a bit off.

I don't know if this is a problem with WinUAE, the setup of the A1200 or specific to AsmPro but it's a bit annoying pressing the ' # ' key and getting the ' | ' symbol.

If there is a proper thread for this then I apologise in advance - I'll quite happily move this if you can tell me where it should go.

pmc · 03 September 2010, 12:21

I'm no Workbench expert but can't this be sorted with some kind of software keyboard map in the startup sequence or something...? Setmap is it...?

08 June 2009, 15:47	#1
Asman 68k Join Date: Sep 2005 Location: Somewhere Posts: 828	AsmPro sources question(s) Hi Some days ago I looked into AsmPro sources ( v 1.17 ) and I find something which I don't understand. At lines 363-364 (ASMPro.s )there is Code: move.l 4(sp),d0 MOVE.L D0,StackSize Maybe someone can answer when/why (4,sp) contains "stack size". As I know when program starts from CLI then I can obtain stack size from pr_StackSize. Maybe there is a bug in ASMPro.s ??? edit: After analyzation of AsmPro.s I think that above sp point to sp obtained at begin of source. I think. Maybe it's kind of trick used in kick1.3 or something. I've no idea. Regards Last edited by Asman; 08 June 2009 at 15:53. Reason: update2

09 June 2009, 12:18	#6
Asman 68k Join Date: Sep 2005 Location: Somewhere Posts: 828	Hi pmc, For clarification. I talking about situation when you load a program under a Shell then (4,sp) contains size of the stack in bytes. I don't know what happen with sp when program started from WB. cheers Last edited by Asman; 09 June 2009 at 12:19. Reason: update2

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12 June 2009, 23:45	#7
Wepl Moderator Join Date: Nov 2001 Location: Germany Posts: 873	there are more values (registers/stack) which have defined values when started from cli, most of them are required to run bcpl programs. also some compilers use them for their startup code (e.g. manx). you can find infos in the guru book from ralph babel about this.

03 September 2010, 11:35	#9
pmc gone Join Date: Apr 2007 Location: completely gone Posts: 1,596	Sting will only recommend AsmOne and AsmPro cos he knows what all the bugs are and how to work round them and loves the software. I also think they're excellent in that they have very useful functions - especially for writing binaries and writing to disk etc. but I prefer Devpac for the actual assembling of my code. I write the code in Ultraedit on PC though - can't be using Amiga assembler's editors now that I'm used to a more modern text editor I'm afraid.

03 September 2010, 11:48	#10
CmdrVimes Badge 177 Join Date: Aug 2010 Location: Mirfield / UK Posts: 77	@pmc Yeah, I am just having a look at Devpac myself. It is probably worth me pointing out that I know sod all assembler. The last time I looked at any was back at university - we had a 68k module on the course and a lab full of Atari ST1040s to code on. That was far too many years ago though. Please Note: I may ask some really stupid/obvious questions. You have been warned.

03 September 2010, 11:50	#11
pmc gone Join Date: Apr 2007 Location: completely gone Posts: 1,596	No worries man - there are no stupid questions. The coding forums are here, so ask away.

03 September 2010, 12:05	#13
CmdrVimes Badge 177 Join Date: Aug 2010 Location: Mirfield / UK Posts: 77	@StingRay Any input from you more experienced coders is welcome. On a sort of slightly connected note, I wonder if one of you can point me in the right direction here. I am running my stuff on a WinUAE emulated A1200 and everything seems to be ok except that the keyboard mappings are a bit off. I don't know if this is a problem with WinUAE, the setup of the A1200 or specific to AsmPro but it's a bit annoying pressing the ' # ' key and getting the ' \| ' symbol. If there is a proper thread for this then I apologise in advance - I'll quite happily move this if you can tell me where it should go.

03 September 2010, 12:21	#14
pmc gone Join Date: Apr 2007 Location: completely gone Posts: 1,596	I'm no Workbench expert but can't this be sorted with some kind of software keyboard map in the startup sequence or something...? Setmap is it...?

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