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/* $OpenBSD: uthread_machdep_asm.S,v 1.1 2000/10/03 02:44:15 d Exp $ */
/* David Leonard, <d@csee.uq.edu.au>. Public domain. */
#include <machine/asm.h>
#define SOFF(n) ((n)*4)
#define FPOFF(n) (SOFF(9) + 4 + (n)*8)
#define REGOFF(n) (FPOFF(3) + (n)*4)
#define FRAMESIZE (REGOFF(2) + 4*4+4+4)
NON_LEAF(_thread_machdep_switch, FRAMESIZE, ra)
add sp, sp, -FRAMESIZE
sw s0, SOFF(0)(sp)
sw s1, SOFF(1)(sp)
sw s2, SOFF(2)(sp)
sw s3, SOFF(3)(sp)
sw s4, SOFF(4)(sp)
sw s5, SOFF(5)(sp)
sw s6, SOFF(6)(sp)
sw s7, SOFF(7)(sp)
sw s8, SOFF(8)(sp)
s.d $f0, FPOFF(0)(sp) /* XXX why? */
s.d $f2, FPOFF(1)(sp)
s.d $f4, FPOFF(2)(sp)
sw t9, REGOFF(0)(sp)
sw ra, REGOFF(1)(sp)
sw sp, 0(a1)
lw sp, 0(a0)
.set noreorder /* avoid nops */
lw ra, REGOFF(1)(sp)
lw t9, REGOFF(0)(sp)
l.d $f4, FPOFF(2)(sp)
l.d $f2, FPOFF(1)(sp)
l.d $f0, FPOFF(0)(sp)
lw s8, SOFF(8)(sp)
lw s7, SOFF(7)(sp)
lw s6, SOFF(6)(sp)
lw s5, SOFF(5)(sp)
lw s4, SOFF(4)(sp)
lw s3, SOFF(3)(sp)
lw s2, SOFF(2)(sp)
lw s1, SOFF(1)(sp)
lw s0, SOFF(0)(sp)
.set reorder
add sp, sp, FRAMESIZE
j ra
END(_thread_machdep_switch)
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