topic Re: Linker does not compress gaps between VLE functions like Reference Manual say in Classic/Legacy CodeWarrior

Linker does not compress gaps between VLE functions like Reference Manual say

AndyMax — Fri, 05 Sep 2025 02:22:38 GMT

The "CodeWarrior Development Studio for Power Architecture® Processors Build Tools Reference " says:

-func_align

Specifies alignment of functions in executable code.

Syntax

-func_align 4 | 8 | 16 | 32 | 64 | 128

Remarks

The default alignment is 4. However, at an optimization level 4, the alignment changes to 16. If you are using -func_align 4 (or none) and if you are compiling for VLE, then the linker will compress gaps between VLE functions:

• if those functions are not called by a Classic PPC function

• the function has an alignment greater than 4.

NOTE Compression of the gaps will only happen on files compiled by the CodeWarrior compiler.

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Questions:

1. Isn't there a contradiction here or how should this be understood?

"If you are using -func_align 4 (or none) and if you are compiling for VLE, then the linker will compress gaps between VLE functions:"

" • the function has an alignment greater than 4."

2. What is "Classic PPC function" ?

3. Why I still have gaps "00 00" between functions: I compile VLE code and "Function alignment"(Code Generation->EPPC Processor) in Codewarrior project settings is set to "4 Byte" (check attachments)?

Re: Linker does not compress gaps between VLE functions like Reference Manual say

AndyMax — Fri, 05 Sep 2025 02:42:10 GMT

... attachments ...

Re: Linker does not compress gaps between VLE functions like Reference Manual say

AndyMax — Fri, 05 Sep 2025 05:39:54 GMT

UPD1: I created blank project and fill it with example functions, and this project no generate gaps between functions. I'm keeping play with this

Re: Linker does not compress gaps between VLE functions like Reference Manual say

AndyMax — Sat, 06 Sep 2025 02:22:07 GMT

FORCEFILES { "module.o" }

For some reason it gives the linker the right to forget about his promises. If you have same issue just remove your module name from it.