Compiler/AM3352: program behaviors weird

Andy Lin94

Expert 1390 points

Part Number: AM3352

Tool/software: TI C/C++ Compiler

core: am3352(cortex-a8)

compiler: TI v5.2.5

Q1: Why at line 330 in Disassembly windows, It has three instructions but no corresponding statement?

2. There is no corresponding instruction for "p_sp++"statement. I cannot find line 336 in Disassembly window.

3. After executing "*p_sp = (CPU_STK)1;", the value isn't changed.

over 6 years ago

0 George Mock over 6 years ago

TI__Guru**** 251530 points

My guess is you are building with optimization. Compiler optimization can make the debug experience more difficult. Please see the article Debug vs Optimization Tradeoff.

I suspect your goal is you want to better understand the compiler generated assembly code. Looking at the disassembly in CCS is one way to do that. A better way is to use the compiler option --src_interlist, then look at the compiler generated assembly file. It has the same name as the source file, with the extension changed to .asm. In CCS, it is usually found in the Debug directory (or the directory with same name as the current build configuration). Search for the --src_interlist option in the TI ARM compiler manual.

Thanks and regards,

-George

0 Andy Lin94 over 6 years ago in reply to George Mock

Expert 1390 points

Hi. In my Optimization setting, I set Optimization level as "off".

0 AartiG over 6 years ago in reply to Andy Lin94

TI__Guru**** 173310 points

Is this issue also resolved as per your other post here?

0 Andy Lin94 over 6 years ago in reply to AartiG

Expert 1390 points

Yes, although I have totally no idea why

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Compiler/AM3352: program behaviors weird