Recent posts

Stopped using instruction MOVBE for load/store with byte-swap in the X64 code generator. Ditto for the X86 code generator.
Fixed infinite recursion in POASM, from a construct like: MessageBoxA TEXTEQU <MessageBoxA>.
Stopped auto-installing buildver.dll in Bin\AddIns64 directory.
Minor revision to default manifest for IDE resource editor.
Minor documentation fix.

#25

Assembly discussions / Basic like put command

Last post by Vortex - March 28, 2026, 08:43:49 PM

Basic like put command sample :

Code Select

include     OpenNewTxtForOutput.inc

.data

msg         db 'This is a test.',0
msg2        db 'Another test',0
file        db 'Test.txt',0

.data?

hFile       dd ?

.code

OpenNewTxtForOut PROC filename:DWORD

LOCAL mode:DWORD	

    mov     mode,'w'
    invoke  fopen,filename,\
            ADDR mode
    ret

OpenNewTxtForOut ENDP

put PROC handle:DWORD,pMemory:DWORD
    
    invoke  lstrlen,pMemory
    invoke  fwrite,pMemory,1,\
            eax,handle
    ret

put ENDP
    
close PROC handle:DWORD

     invoke fclose,handle
     ret

close ENDP

start:

    invoke  OpenNewTxtForOut,ADDR file
    mov     hFile,eax
    
    invoke  put,eax,ADDR msg
    invoke  put,hFile,ADDR msg2
    invoke  close,hFile
    
    invoke  ExitProcess,0

END start

#26

Beginner questions / Re: same code pelles c and gcc...

Last post by Pelle - March 28, 2026, 12:34:09 PM

Quote from: John Z on March 28, 2026, 10:56:36 AMDownloaded n3220 working draft.

Problem is not your English - it is the inconsistency in the proposed spec.

Thanks for looking at this! Glad it's not just me, then...

Until there is a clearer picture, I will not change anything. The GCC distribution for Windows, that I have found in recent years (they seem to come and go), have been of somewhat dubious quality. I havn't seen this for LLVM yet. Microsoft may get to <stdbit.h> in 2035. Maybe.

For now, there are other functions doing the same job; for Windows: _BitScanForward(), _BitScanReverse(), _BitScanForward64(), and _BitScanReverse64(); more generic: _bit_scan_forward(), _bit_scan_forward64(), _bit_scan_reverse(), _bit_scan_reverse64(). No requirement on C23.

#27

Beginner questions / Re: same code pelles c and gcc...

Last post by John Z - March 28, 2026, 10:56:36 AM

Downloaded n3220 working draft.

Problem is not your English - it is the inconsistency in the proposed spec.

Sections 7.18.3 through 7.18.6 clearly indicate the direction to 'count' from. 'Leading' is from MSB to LSB,
'Trailing' is from LSB to MSB these are specifically spelled out in each of these sections under item #2.

However

Sections 7.18.7 through 7.18.12 drop the clarity. They seem to assume that everyone will guess "Leading" always means counting from MSB to LSB, and "Trailing" always means counting from LSB to MSB but do not ever specifically say so as in the previous sections.

Also have to be careful where some times use index as in Bit[0] - Bit[15] verses position Bit[1] - Bit[16]. or they say index +1 which is position or using w-1 which would be index

different authors I'm guessing.

IMO -

John Z

#28

Feature requests / Re: Enhanced editor suggestion

Last post by Pelle - March 27, 2026, 08:05:20 PM

Quote from: PhilG57 on February 14, 2026, 05:58:31 PMIt would be helpful to me if the editor would show which #ifdef/#else/#endif paths were active. This might be done by highlighting, or not, the appropriate code sections. Sometime I run into multiple, nested #ifdef's and sorting it all out is a big pain. Thanks.

I actually would want this too, and have invested some time investigating this in the past. The problem is that it's not trivial to do accurate and fast enough. Inaccurate is unhelpful, and waiting on the editor is useless.

#29

Beginner questions / Re: same code pelles c and gcc...

Last post by Pelle - March 27, 2026, 07:58:36 PM

Quote from: TimoVJL on March 27, 2026, 07:44:02 PMgcc is multitarget compiler and see things in that way.
memory layout can be different in little-endian / big-endian things ?

Yes, but these functions should operate on the loaded value, disregarding the memory byte-order.
I would like a second opinion to GCC, but few compilers seems to care about C23 in general, and <stdbit.h> especially...

#30

Beginner questions / Re: same code pelles c and gcc...

Last post by TimoVJL - March 27, 2026, 07:44:02 PM

gcc is multitarget compiler and see things in that way.
memory layout can be different in little-endian / big-endian things ?

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