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#include <sys/regdef.h>
#include <sys/asm.h>
LEAF(FPsave)
cfc1 t0, $31
sw t0, 0(a0) /* a0 is argument */
j $31
END(FPsave)
LEAF(FPrestore)
lw t0, 0(a0) /* a0 is argument */
ctc1 t0, $31
j $31
END(FPrestore)
/*
* lock from r4000 book
*/
LEAF(_tas)
.set noreorder
1:
ll v0,0(a0) /* a0 is argument */
or t1, v0, 1
sc t1,0(a0)
beq t1,zero,1b
nop
j $31 /* lock held */
nop
.set reorder
END(_tas)
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