ti_arm9_abi or eabi?

Paul Singh

Hi,

In the properties setting of OMAP L138 (arm 926 core) ARM projects I need to select binary interface between:

ti_arm9_abi
eabi
tiabi

The compiler manual SPNU151 says “The TI ARM9 ABI is the default mode of the compiler.” Then would choosing types like EABI, which I read elsewhere saying it is also popular, would result in some error?

Paul

over 13 years ago

0 Archaeologist over 13 years ago

TI__Guru* 84285 points

Object files compiled with distinct interface modes are not compatible and cannot be linked. Choose EABI if you can, because that's the only mode that is compatible with other ARM compilers. You might not be able to use EABI if you rely on a library which not available in EABI.

0 Paul Singh over 13 years ago in reply to Archaeologist

Expert 2750 points

Thanks,

I see “eabi” option both in

Output format
Application binary interface

But for ti_arm9_abi and and and tiabi, they are only in application binary interface options but no in output format option. So what’s the difference between output format and application binary interface?

Paul

0 Archaeologist over 13 years ago in reply to Paul Singh

TI__Guru* 84285 points

The "application binary interface" is the only option the compiler and linker understand. I do not know about an option named exactly "output format" is; perhaps it controls some other tool?

0 AartiG over 13 years ago in reply to Paul Singh

TI__Guru**** 173310 points

Paul Singh said:

But for ti_arm9_abi and and and tiabi, they are only in application binary interface options but no in output format option. So what’s the difference between output format and application binary interface?

Both ti_arm9_abi and tiabi generate "legacy COFF" output format, while eabi generates "eabi(ELF)" output format as shown in the CCS Project Properties.

This wiki page also has some background info on COFF and ELF formats.

0 Paul Singh over 13 years ago in reply to AartiG

Expert 2750 points

The wiki page was a good introduction. I switched all to eabi/elf and works without problem.

Paul

0 Paul Singh over 13 years ago in reply to Archaeologist

Expert 2750 points

I also think there should be only the abi option, not two. ELF can be found in many books, and I wondered why there is a second option which seems to overlap.

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ti_arm9_abi or eabi?