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Note on use of TAS,CAS and CAS2 on Amiga.

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git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22743 a95241bf-73f2-0310-859d-f6bbb57e9c96
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François Revol 2007-10-26 22:27:31 +00:00
parent 8161a0aff8
commit b82ae48b36
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8
src/system/libroot/os/arch/m68k/atomic.S
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@ -8,6 +8,14 @@
* d0,d1,a0,a1 are scratch regs, not to be saved.
*/
/*
* see http://mail-index.netbsd.org/amiga/1995/06/
* for concerns about TAS, CAS and Amiga.
* I suppose as long as we don't use it on a variable in
* chip ram it shouldn't be a problem, and since we don't
* have any SMP Amiga anyway it should be ok.
*/
#define FUNCTION(x) .global x; .type x,@function; x
.text