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Title: Keil C166 Question
Post by: davetuner on July 04, 2013, 03:49:59 AM

Hi,

I've got my head now round the dis-assembly with IDA and before I write the new function I had in mind I wanted to assemble the NLS function from asm code to make sure I get the same binary result.

When I try to assemble the function in Keil I get the following error on each line of code.

NLS.A66(39): error A44: NO CURRENTLY ACTIVE SECTION

Anybody knows what I'm doing wrong here?

I'm using this code:

Code:

;8E800:					
		jnb	FD38.8, 8E82Ah
		mov	r4, 380E40h
		exts	#81h, #1 ; ''
		mov	r9, 17E00h
		cmp	r4, r9
		jmpr	cc_NC, 8E82Ah
		mov	r4, F87A
		exts	#81h, #1 ; ''
		mov	r9, 17E02h
		cmp	r4, r9
		jmpr	cc_ULE,	8E82Ah
		movb	380DACh, ZEROS
		jmpr	cc_UC, 8E888h
; ---------------------------------------------------------------------------

;8E82A:			
		jnb	FD38.8, 8E880h
		jb	FD38.6, 8E876h
		mov	r4, F87A
		exts	#81h, #1 ; ''
		mov	r9, 17E06h
		cmp	r4, r9
		jmpr	cc_ULE,	8E876h
		movbz	r4, 380B02h
		exts	#81h, #1 ; ''
		movbz	r9, 17E08h
		cmp	r4, r9
		jmpr	cc_ULE,	8E876h
		exts	#38h, #1 ; '8'
		mov	r4, 384FF0h
		exts	#81h, #1 ; ''
		mov	r9, 17E04h
		cmp	r4, r9
		jmpr	cc_NC, 8E888h
		movb	380DACh, ZEROS
		add	r4, #1
		exts	#38h, #1 ; '8'
		movb	384FF0h, rl4
		jmpr	cc_UC, 8E888h
; ---------------------------------------------------------------------------

;8E876:			
		exts	#38h, #1 ; '8'
		mov	384FF0h, ONES
		jmpr	cc_UC, 8E888h
; ---------------------------------------------------------------------------

;8E880:			
		exts	#38h, #1 ; '8'
		mov	384FF0h, ZEROS

;8E888:				
		movb	rl4, 380AF3h
		rets
end;

Cheers,
Dave

Title: Re: Keil C166 Question
Post by: prj on July 04, 2013, 04:49:40 AM

$MOD167
$SEGMENTED

<define your constants here>

yourname SECTION CODE 'NCODE'

proc1 proc far

<your code here>

proc1 endp

...

procx proc far

<your code here>

procx endp

yourname ends

END

Title: Re: Keil C166 Question
Post by: marrakech on July 03, 2015, 02:37:03 PM

I'm trying to find option, which allow me write code for Keil asm from selected address...

For example. I want to patch some code in IDA from addr 0x1blablabla
But firstly, i want to test this patch in Keil. I create new project, asm project. Then write, check, compile... but code addressing from reset_handler goind bytes by bytes... +1 +1 +1 ...

How can i tell to keil compile some routine and put this to specific address ?
reser_hadler:
call routine

0xblablabla: routine:
............
..........
.......
rets

Thanks. :)

Title: Re: Keil C166 Question
Post by: prj on July 09, 2015, 10:40:36 AM

Quote from: marrakech on July 03, 2015, 02:37:03 PM

Why would you put it at specific address?
Put it in a normal binary file and then put it into an address by hand.

You will have to enter the calls in hex anyway into the locations you need, so what does it matter?

Or are you trying to compile the entire disassembly?!?

NefMoto

Technical => Reverse Engineering => Topic started by: davetuner on July 04, 2013, 03:49:59 AM