[Sdcc-user] Possible changes to inline assembler syntax

[Philipp K. K. <pk...@sp...>]

SDCC currently supports two forms of inline assembler:

1:
__asm
asm code here
__endasm;

and

2:
__asm("asm code here");

Form 1 requires some ugly hacks to avoid conflicts in the preprocessor.
I wonder if we could drop those, and maybe even change the keyword in 
form 2 to __asm__.

Does anyone rely on form 1 and would not want support for it dropped? 
Any opinions on the possible rename of form 2?

For comparison, GCC and clang both use:

__asm__("asm code here");

as well as the following variants:

* Using asm instead of __asm__

Which I think we do not want

* __asm__("asm code here" : Output);
* __asm__("asm code here" : Output : Input);
* __asm__("asm code here" : Output : Input : Clobbers);
* __asm__ goto("asm code here" : Output : Input : Clobbers : Labels);

These variants (which GCC allows in non-naked functions only) we might 
want to support sometime (depending on user demand and SDCC developers 
finding time to implement it).

Philipp