Re: [PATCH] m68k: Fix asm register constraints for atomic ops

On Jul 25 2021, Geert Uytterhoeven wrote:

Depending on register assignment by the compiler:

    {standard input}:3084: Error: operands mismatch -- statement `andl %a1,%d1' ignored
    {standard input}:3145: Error: operands mismatch -- statement `orl %a1,%d1' ignored
    {standard input}:3195: Error: operands mismatch -- statement `eorl %a1,%d1' ignored

Indeed, the first operand must not be an address register.  Fix this by
adjusting the register constraint from "g" (general purpose register) to
"d" (data register).

You should also allow immediate ("i").

There is the ASM_DI macro for that, but since CONFIG_RMW_INSNS is never
defined for CONFIG_COLDFIRE, it probably doesn't matter.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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