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.data inside proc
can i make readable only data inside proc. ????
Posted on 2004-01-22 14:10:57 by AceEmbler
.data inside proc
shouldn't be a problem... define a label at the end of your proc, after the ret, and put your data there?
Posted on 2004-01-22 15:30:42 by f0dder
.data inside proc
Afternoon, AceEmbler. 



.code

   ...

    jmp @F

    mylabel db "My read-only data",0

    @@:

    invoke MessageBox, NULL, addr mylabel, NULL, MB_OK

    ...


Cheers,
Scronty
Posted on 2004-01-22 15:31:49 by Scronty
.data inside proc
This is the best way for the processor. 

MyProc PROC something:DWORD

    mov eax, something



CONST SEGMENT

    somthingElse DWORD 123

CONST ENDS



    add eax, somthingElse

    ret

MyProc ENDP
...it told me so itself. ;)
Posted on 2004-01-22 15:32:46 by bitRAKE
.data inside proc
scronty, why do the jmp version when you can just place the data after the final ret?
Posted on 2004-01-22 15:34:31 by f0dder
.data inside proc

This is the best way for the processor. 

MyProc PROC something:DWORD

    mov eax, something



CONST SEGMENT

    somthingElse DWORD 123

CONST ENDS



    add eax, somthingElse

    ret

MyProc ENDP
...it told me so itself. ;)


Is this method working for *.lib or *.dll ???
Posted on 2004-01-22 18:19:22 by AceEmbler
.data inside proc

Is this method working for *.lib or *.dll ???
Yes, I cannot see where it would result in a problem?
Posted on 2004-01-22 19:45:42 by bitRAKE
.data inside proc
AceEmbler,

Bitrake's code places your data in another segment (section), if I am not wrong, therefore it works for both dll and lib

Anyway fodder's suggestion for code after ret is applicable, but just remember that if you place data in code section, you cannot write to it unless of course you change the section flags to writeable too.
Posted on 2004-01-22 19:49:27 by roticv
.data inside proc

Yes, I cannot see where it would result in a problem?


So where are section defined in our app ??
Posted on 2004-01-23 05:00:59 by AceEmbler
.data inside proc



So where are section defined in our app ??
.MODEL FLAT defines the default SEGMENTs or you can do it manually to have greater control of alignment:
	_TEXT SEGMENT READONLY PAGE PUBLIC FLAT 'CODE'

	_TEXT ENDS



	CONST SEGMENT READONLY PAGE PUBLIC FLAT 'CONST'

	CONST ENDS



	_DATA SEGMENT PAGE PUBLIC FLAT 'DATA'

	_DATA ENDS



	_BSS SEGMENT PAGE PUBLIC FLAT 'BSS'

	_BSS ENDS



	ASSUME CS:FLAT, DS:FLAT, SS:FLAT, ES:FLAT
The above is a direct replacement for .MODEL FLAT except using PAGE alignment.
Posted on 2004-01-23 08:00:21 by bitRAKE
.data inside proc
how our app knows that this is segment with data not instructions ??? i thought its somewhere in PE
Posted on 2004-01-24 05:18:49 by AceEmbler
.data inside proc
The linker will create another section in the PE file based on the SEGMENT name and parameters.
Posted on 2004-01-24 07:50:42 by bitRAKE