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/* $OpenBSD: uthread_machdep_asm.S,v 1.3 2004/11/02 21:36:11 pefo Exp $ */
/* David Leonard, <d@csee.uq.edu.au>. Public domain. */
#include <machine/asm.h>
/*
* Save layout:
*
* -----------
* +152 | sp |
* +144 | t9 |
* -----------
* +136 | fcr |
* -----------
* +128 | f31 |
* +120 | f30 |
* +112 | f29 |
* +104 | f28 |
* +96 | f27 |
* +88 | f26 |
* +80 | f25 |
* +72 | f24 |
* -----------
* +64 | s8 |
* +56 | s7 |
* +48 | s6 |
* +40 | s5 |
* +32 | s4 |
* +24 | s3 |
* +16 | s2 |
* +8 | s1 |
* sp -> | s0 |
* -----------
*/
#define SOFF(n) ((n)*REGSZ)
#define FPOFF(n) (SOFF(9) + (n)*8)
#define REGOFF(n) (FPOFF(9) + (n)*REGSZ)
#define FRAMESIZE (REGOFF(2) + REGSZ*4+REGSZ+REGSZ)
NON_LEAF(_thread_machdep_switch, FRAMESIZE, ra)
PTR_ADDU sp, sp, -FRAMESIZE
REG_S s0, SOFF(0)(sp)
REG_S s1, SOFF(1)(sp)
REG_S s2, SOFF(2)(sp)
REG_S s3, SOFF(3)(sp)
REG_S s4, SOFF(4)(sp)
REG_S s5, SOFF(5)(sp)
REG_S s6, SOFF(6)(sp)
REG_S s7, SOFF(7)(sp)
REG_S s8, SOFF(8)(sp)
s.d $f24, FPOFF(0)(sp)
s.d $f25, FPOFF(1)(sp)
s.d $f26, FPOFF(2)(sp)
s.d $f27, FPOFF(3)(sp)
s.d $f28, FPOFF(4)(sp)
s.d $f29, FPOFF(5)(sp)
s.d $f30, FPOFF(6)(sp)
s.d $f31, FPOFF(7)(sp)
REG_S t9, REGOFF(0)(sp)
REG_S ra, REGOFF(1)(sp)
cfc1 t9, $31
REG_S t9, FPOFF(8)(sp)
REG_S sp, 0(a1)
REG_L sp, 0(a0)
.set noreorder /* avoid nops */
REG_L t9, FPOFF(8)(sp)
ctc1 t9, $31
REG_L ra, REGOFF(1)(sp)
REG_L t9, REGOFF(0)(sp)
l.d $f24, FPOFF(0)(sp)
l.d $f25, FPOFF(1)(sp)
l.d $f26, FPOFF(2)(sp)
l.d $f27, FPOFF(3)(sp)
l.d $f28, FPOFF(4)(sp)
l.d $f29, FPOFF(5)(sp)
l.d $f30, FPOFF(6)(sp)
l.d $f31, FPOFF(7)(sp)
REG_L s8, SOFF(8)(sp)
REG_L s7, SOFF(7)(sp)
REG_L s6, SOFF(6)(sp)
REG_L s5, SOFF(5)(sp)
REG_L s4, SOFF(4)(sp)
REG_L s3, SOFF(3)(sp)
REG_L s2, SOFF(2)(sp)
REG_L s1, SOFF(1)(sp)
REG_L s0, SOFF(0)(sp)
.set reorder
PTR_ADDU sp, sp, FRAMESIZE
j ra
END(_thread_machdep_switch)
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