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How do I enable 8bit stack alignment?

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

I'm trying to compile a C program with RVDS.
At link time, I get a lot of "myProgram.o(.text) contains invalid call from '~PRES8' function to 'REQ8' function"

I only found an asembly directive (e.g. PRESERVE8) that solves the issue for the .s files but not for c source files.

Is there any linker option that solves this problem?

Ionut Dinulescu over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

--apcs /noswst/interwork/fpic
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Ionut Dinulescu over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

Are you calling any library functions or any function which are written in assembly langauge?

Nope ... all of the functions are written in C.

What I do is compile a library with RVCT 3.1 and compile the application with RVCT 4.0 (some customer request)
If I compile everything with 4.0 or 3.1, everything works fine.
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Ionut Dinulescu over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

The compiler options for both lib and application are: --apcs /noswst/interwork/fpic --littleend -Otime -O3 --forceinline
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Martin Weidmann over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

That is a bit odd, as 8-byte stack alignment should be default setting.

What compiler flags are you specifying? Specifically, are you specifying anything like "--apcs="?
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Junaid Kk over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

Are you calling any library functions or any function which are written in assembly langauge?
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Junaid Kk over 12 years ago

Note: This was originally posted on 20th April 2011 at http://forums.arm.com

ok,
Compiler settings for the both are same? Are u using PCS-options ?
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