ColdFire/68K Microcontrollers and ProcessorsのトピックMCF52235 - BRAS with gcc

MCF52235 - BRAS with gcc

Petter — Tue, 17 Apr 2007 05:10:10 GMT

I've noticed that gcc will produse BRAS (some form of BCC) instructions when compiled with the -mcpu=52235 option. But I can't seem to find this instruction documented anywhere, at least not in the CFPRM or the MCF52235RM?

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Alban Edit: Product must show in subject line + explanatory subject

Message Edited by Alban on 2007-04-17 11:40 AM

Re: BRAS

CompilerGuru — Tue, 17 Apr 2007 05:51:21 GMT

Is it BRAS or BRA.S?
Anyway, I would check the code pattern it generates and compare it with the BRA.S (bra.b) one, sounds like just an alias.

Daniel

Re: MCF52235 - BRAS with gcc

Petter — Tue, 17 Apr 2007 23:02:59 GMT

Of course it is. Here's the output from m68k-elf-objdump:

208a: 6036 bras 20c2

Been reading more RISC code than CISC code lately. I erroneously assumed that 6 was BCC where 0 was some new conditional option. But 60 is BRA as you suggest. Thanks.