FreeBSD-5.3/sys/ia64/ia64/context.S
/*
* Copyright (c) 2003 Marcel Moolenaar
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
* $FreeBSD: src/sys/ia64/ia64/context.S,v 1.3 2003/07/02 12:57:07 ru Exp $
*/
#include <machine/asm.h>
#include <assym.s>
.text
/*
* void restorectx(struct pcb *)
*/
ENTRY(restorectx, 1)
{ .mmi
invala
mov ar.rsc=0
add r31=8,r32
;;
}
{ .mmi
ld8 r12=[r32] // sp
ld8 r16=[r31],16 // unat (before)
add r30=16,r32
;;
}
{ .mmi
ld8 r17=[r30],16 // rp
ld8 r18=[r31],16 // pr
add r14=SIZEOF_SPECIAL,r32
;;
}
{ .mmi
ld8 r19=[r30],16 // pfs
ld8 r20=[r31],16 // bspstore
mov rp=r17
;;
}
{ .mmi
loadrs
ld8 r21=[r30],16 // rnat
mov pr=r18,0x1fffe
;;
}
{ .mmi
ld8 r17=[r14],8 // unat (after)
mov ar.bspstore=r20
mov ar.pfs=r19
;;
}
{ .mmi
mov ar.unat=r17
mov ar.rnat=r21
add r15=8,r14
;;
}
{ .mmi
ld8.fill r4=[r14],16 // r4
ld8.fill r5=[r15],16 // r5
nop 0
;;
}
{ .mmi
ld8.fill r6=[r14],16 // r6
ld8.fill r7=[r15],16 // r7
nop 1
;;
}
{ .mmi
mov ar.unat=r16
mov ar.rsc=3
nop 2
}
{ .mmi
ld8 r17=[r14],16 // b1
ld8 r18=[r15],16 // b2
nop 3
;;
}
{ .mmi
ld8 r19=[r14],16 // b3
ld8 r20=[r15],16 // b4
mov b1=r17
;;
}
{ .mmi
ld8 r16=[r14],24 // b5
ld8 r17=[r15],32 // lc
mov b2=r18
;;
}
{ .mmi
ldf.fill f2=[r14],32
ldf.fill f3=[r15],32
mov b3=r19
;;
}
{ .mmi
ldf.fill f4=[r14],32
ldf.fill f5=[r15],32
mov b4=r20
;;
}
{ .mmi
ldf.fill f16=[r14],32
ldf.fill f17=[r15],32
mov b5=r16
;;
}
{ .mmi
ldf.fill f18=[r14],32
ldf.fill f19=[r15],32
mov ar.lc=r17
;;
}
ldf.fill f20=[r14],32
ldf.fill f21=[r15],32
;;
ldf.fill f22=[r14],32
ldf.fill f23=[r15],32
;;
ldf.fill f24=[r14],32
ldf.fill f25=[r15],32
;;
ldf.fill f26=[r14],32
ldf.fill f27=[r15],32
;;
{ .mmi
ldf.fill f28=[r14],32
ldf.fill f29=[r15],32
add r8=1,r0
;;
}
{ .mmb
ldf.fill f30=[r14]
ldf.fill f31=[r15]
br.ret.sptk rp
;;
}
END(restorectx)
/*
* void swapctx(struct pcb *old, struct pcb *new)
*/
ENTRY(swapctx, 2)
{ .mmi
mov ar.rsc=0
mov r16=ar.unat
add r31=8,r32
;;
}
{ .mmi
flushrs
st8 [r32]=sp,16 // sp
mov r17=rp
;;
}
{ .mmi
st8 [r31]=r16,16 // unat (before)
st8 [r32]=r17,16 // rp
mov r16=pr
;;
}
{ .mmi
st8 [r31]=r16,16 // pr
mov r17=ar.bsp
mov r16=ar.pfs
;;
}
{ .mmi
st8 [r32]=r16,16 // pfs
st8 [r31]=r17,16 // bspstore
cmp.eq p15,p0=0,r33
;;
}
{ .mmi
mov r16=ar.rnat
(p15) mov ar.rsc=3
add r30=SIZEOF_SPECIAL-(6*8),r32
;;
}
{ .mmi
st8 [r32]=r16,SIZEOF_SPECIAL-(4*8) // rnat
st8 [r31]=r0,SIZEOF_SPECIAL-(6*8) // __spare
mov r16=b1
;;
}
/* callee_saved */
{ .mmi
.mem.offset 8,0
st8.spill [r31]=r4,16 // r4
.mem.offset 16,0
st8.spill [r32]=r5,16 // r5
mov r17=b2
;;
}
{ .mmi
.mem.offset 24,0
st8.spill [r31]=r6,16 // r6
.mem.offset 32,0
st8.spill [r32]=r7,16 // r7
mov r18=b3
;;
}
{ .mmi
st8 [r31]=r16,16 // b1
mov r16=ar.unat
mov r19=b4
;;
}
{ .mmi
st8 [r30]=r16 // unat (after)
st8 [r32]=r17,16 // b2
mov r16=b5
;;
}
{ .mmi
st8 [r31]=r18,16 // b3
st8 [r32]=r19,16 // b4
mov r17=ar.lc
;;
}
st8 [r31]=r16,16 // b5
st8 [r32]=r17,16 // lc
;;
st8 [r31]=r0,24 // __spare
stf.spill [r32]=f2,32
;;
stf.spill [r31]=f3,32
stf.spill [r32]=f4,32
;;
stf.spill [r31]=f5,32
stf.spill [r32]=f16,32
;;
stf.spill [r31]=f17,32
stf.spill [r32]=f18,32
;;
stf.spill [r31]=f19,32
stf.spill [r32]=f20,32
;;
stf.spill [r31]=f21,32
stf.spill [r32]=f22,32
;;
stf.spill [r31]=f23,32
stf.spill [r32]=f24,32
;;
stf.spill [r31]=f25,32
stf.spill [r32]=f26,32
;;
stf.spill [r31]=f27,32
stf.spill [r32]=f28,32
;;
{ .mmi
stf.spill [r31]=f29,32
stf.spill [r32]=f30
(p15) add r8=0,r0
;;
}
{ .mmb
stf.spill [r31]=f31
mf
(p15) br.ret.sptk rp
;;
}
{ .mfb
mov r32=r33
nop 0
br.sptk restorectx
;;
}
END(swapctx)
/*
* save_callee_saved(struct _callee_saved *)
*/
ENTRY(save_callee_saved, 1)
{ .mii
nop 0
add r14=8,r32
add r15=16,r32
;;
}
{ .mmi
.mem.offset 8,0
st8.spill [r14]=r4,16 // r4
.mem.offset 16,0
st8.spill [r15]=r5,16 // r5
mov r16=b1
;;
}
{ .mmi
.mem.offset 24,0
st8.spill [r14]=r6,16 // r6
.mem.offset 32,0
st8.spill [r15]=r7,16 // r7
mov r17=b2
;;
}
{ .mmi
st8 [r14]=r16,16 // b1
mov r18=ar.unat
mov r19=b3
;;
}
{ .mmi
st8 [r32]=r18 // nat (after)
st8 [r15]=r17,16 // b2
mov r16=b4
;;
}
{ .mmi
st8 [r14]=r19,16 // b3
st8 [r15]=r16,16 // b4
mov r17=b5
;;
}
{ .mfi
st8 [r14]=r17,16 // b5
nop 0
mov r16=ar.lc
;;
}
{ .mmb
st8 [r15]=r16 // ar.lc
st8 [r14]=r0 // __spare
br.ret.sptk rp
;;
}
END(save_callee_saved)
/*
* restore_callee_saved(struct _callee_saved *)
*/
ENTRY(restore_callee_saved, 1)
{ .mmi
ld8 r30=[r32],16 // nat (after)
;;
mov ar.unat=r30
add r31=-8,r32
;;
}
{ .mmb
ld8.fill r4=[r31],16 // r4
ld8.fill r5=[r32],16 // r5
nop 0
;;
}
{ .mmb
ld8.fill r6=[r31],16 // r6
ld8.fill r7=[r32],16 // r7
nop 0
;;
}
{ .mmi
ld8 r30=[r31],16 // b1
ld8 r29=[r32],16 // b2
nop 0
;;
}
{ .mmi
ld8 r28=[r31],16 // b3
ld8 r27=[r32],16 // b4
mov b1=r30
;;
}
{ .mii
ld8 r26=[r31] // b5
mov b2=r29
mov b3=r28
;;
}
{ .mii
ld8 r25=[r32] // lc
mov b4=r27
mov b5=r26
;;
}
{ .mib
nop 0
mov ar.lc=r25
br.ret.sptk rp
;;
}
END(restore_callee_saved)
/*
* save_callee_saved_fp(struct _callee_saved_fp *)
*/
ENTRY(save_callee_saved_fp, 1)
add r31=16,r32
stf.spill [r32]=f2,32
;;
stf.spill [r31]=f3,32
stf.spill [r32]=f4,32
;;
stf.spill [r31]=f5,32
stf.spill [r32]=f16,32
;;
stf.spill [r31]=f17,32
stf.spill [r32]=f18,32
;;
stf.spill [r31]=f19,32
stf.spill [r32]=f20,32
;;
stf.spill [r31]=f21,32
stf.spill [r32]=f22,32
;;
stf.spill [r31]=f23,32
stf.spill [r32]=f24,32
;;
stf.spill [r31]=f25,32
stf.spill [r32]=f26,32
;;
stf.spill [r31]=f27,32
stf.spill [r32]=f28,32
;;
stf.spill [r31]=f29,32
stf.spill [r32]=f30
;;
stf.spill [r31]=f31
br.ret.sptk rp
;;
END(save_callee_saved_fp)
/*
* restore_callee_saved_fp(struct _callee_saved_fp *)
*/
ENTRY(restore_callee_saved_fp, 1)
add r31=16,r32
ldf.fill f2=[r32],32
;;
ldf.fill f3=[r31],32
ldf.fill f4=[r32],32
;;
ldf.fill f5=[r31],32
ldf.fill f16=[r32],32
;;
ldf.fill f17=[r31],32
ldf.fill f18=[r32],32
;;
ldf.fill f19=[r31],32
ldf.fill f20=[r32],32
;;
ldf.fill f21=[r31],32
ldf.fill f22=[r32],32
;;
ldf.fill f23=[r31],32
ldf.fill f24=[r32],32
;;
ldf.fill f25=[r31],32
ldf.fill f26=[r32],32
;;
ldf.fill f27=[r31],32
ldf.fill f28=[r32],32
;;
ldf.fill f29=[r31],32
ldf.fill f30=[r32]
;;
ldf.fill f31=[r31]
br.ret.sptk rp
;;
END(restore_callee_saved_fp)
/*
* save_high_fp(struct _high_fp *)
*/
ENTRY(save_high_fp, 1)
rsm psr.dfh
;;
srlz.d
add r31=16,r32
stf.spill [r32]=f32,32
;;
stf.spill [r31]=f33,32
stf.spill [r32]=f34,32
;;
stf.spill [r31]=f35,32
stf.spill [r32]=f36,32
;;
stf.spill [r31]=f37,32
stf.spill [r32]=f38,32
;;
stf.spill [r31]=f39,32
stf.spill [r32]=f40,32
;;
stf.spill [r31]=f41,32
stf.spill [r32]=f42,32
;;
stf.spill [r31]=f43,32
stf.spill [r32]=f44,32
;;
stf.spill [r31]=f45,32
stf.spill [r32]=f46,32
;;
stf.spill [r31]=f47,32
stf.spill [r32]=f48,32
;;
stf.spill [r31]=f49,32
stf.spill [r32]=f50,32
;;
stf.spill [r31]=f51,32
stf.spill [r32]=f52,32
;;
stf.spill [r31]=f53,32
stf.spill [r32]=f54,32
;;
stf.spill [r31]=f55,32
stf.spill [r32]=f56,32
;;
stf.spill [r31]=f57,32
stf.spill [r32]=f58,32
;;
stf.spill [r31]=f59,32
stf.spill [r32]=f60,32
;;
stf.spill [r31]=f61,32
stf.spill [r32]=f62,32
;;
stf.spill [r31]=f63,32
stf.spill [r32]=f64,32
;;
stf.spill [r31]=f65,32
stf.spill [r32]=f66,32
;;
stf.spill [r31]=f67,32
stf.spill [r32]=f68,32
;;
stf.spill [r31]=f69,32
stf.spill [r32]=f70,32
;;
stf.spill [r31]=f71,32
stf.spill [r32]=f72,32
;;
stf.spill [r31]=f73,32
stf.spill [r32]=f74,32
;;
stf.spill [r31]=f75,32
stf.spill [r32]=f76,32
;;
stf.spill [r31]=f77,32
stf.spill [r32]=f78,32
;;
stf.spill [r31]=f79,32
stf.spill [r32]=f80,32
;;
stf.spill [r31]=f81,32
stf.spill [r32]=f82,32
;;
stf.spill [r31]=f83,32
stf.spill [r32]=f84,32
;;
stf.spill [r31]=f85,32
stf.spill [r32]=f86,32
;;
stf.spill [r31]=f87,32
stf.spill [r32]=f88,32
;;
stf.spill [r31]=f89,32
stf.spill [r32]=f90,32
;;
stf.spill [r31]=f91,32
stf.spill [r32]=f92,32
;;
stf.spill [r31]=f93,32
stf.spill [r32]=f94,32
;;
stf.spill [r31]=f95,32
stf.spill [r32]=f96,32
;;
stf.spill [r31]=f97,32
stf.spill [r32]=f98,32
;;
stf.spill [r31]=f99,32
stf.spill [r32]=f100,32
;;
stf.spill [r31]=f101,32
stf.spill [r32]=f102,32
;;
stf.spill [r31]=f103,32
stf.spill [r32]=f104,32
;;
stf.spill [r31]=f105,32
stf.spill [r32]=f106,32
;;
stf.spill [r31]=f107,32
stf.spill [r32]=f108,32
;;
stf.spill [r31]=f109,32
stf.spill [r32]=f110,32
;;
stf.spill [r31]=f111,32
stf.spill [r32]=f112,32
;;
stf.spill [r31]=f113,32
stf.spill [r32]=f114,32
;;
stf.spill [r31]=f115,32
stf.spill [r32]=f116,32
;;
stf.spill [r31]=f117,32
stf.spill [r32]=f118,32
;;
stf.spill [r31]=f119,32
stf.spill [r32]=f120,32
;;
stf.spill [r31]=f121,32
stf.spill [r32]=f122,32
;;
stf.spill [r31]=f123,32
stf.spill [r32]=f124,32
;;
stf.spill [r31]=f125,32
stf.spill [r32]=f126
;;
stf.spill [r31]=f127
ssm psr.dfh
;;
srlz.d
br.ret.sptk rp
;;
END(save_high_fp)
/*
* restore_high_fp(struct _high_fp *)
*/
ENTRY(restore_high_fp, 1)
rsm psr.dfh
;;
srlz.d
add r31=16,r32
ldf.fill f32=[r32],32
;;
ldf.fill f33=[r31],32
ldf.fill f34=[r32],32
;;
ldf.fill f35=[r31],32
ldf.fill f36=[r32],32
;;
ldf.fill f37=[r31],32
ldf.fill f38=[r32],32
;;
ldf.fill f39=[r31],32
ldf.fill f40=[r32],32
;;
ldf.fill f41=[r31],32
ldf.fill f42=[r32],32
;;
ldf.fill f43=[r31],32
ldf.fill f44=[r32],32
;;
ldf.fill f45=[r31],32
ldf.fill f46=[r32],32
;;
ldf.fill f47=[r31],32
ldf.fill f48=[r32],32
;;
ldf.fill f49=[r31],32
ldf.fill f50=[r32],32
;;
ldf.fill f51=[r31],32
ldf.fill f52=[r32],32
;;
ldf.fill f53=[r31],32
ldf.fill f54=[r32],32
;;
ldf.fill f55=[r31],32
ldf.fill f56=[r32],32
;;
ldf.fill f57=[r31],32
ldf.fill f58=[r32],32
;;
ldf.fill f59=[r31],32
ldf.fill f60=[r32],32
;;
ldf.fill f61=[r31],32
ldf.fill f62=[r32],32
;;
ldf.fill f63=[r31],32
ldf.fill f64=[r32],32
;;
ldf.fill f65=[r31],32
ldf.fill f66=[r32],32
;;
ldf.fill f67=[r31],32
ldf.fill f68=[r32],32
;;
ldf.fill f69=[r31],32
ldf.fill f70=[r32],32
;;
ldf.fill f71=[r31],32
ldf.fill f72=[r32],32
;;
ldf.fill f73=[r31],32
ldf.fill f74=[r32],32
;;
ldf.fill f75=[r31],32
ldf.fill f76=[r32],32
;;
ldf.fill f77=[r31],32
ldf.fill f78=[r32],32
;;
ldf.fill f79=[r31],32
ldf.fill f80=[r32],32
;;
ldf.fill f81=[r31],32
ldf.fill f82=[r32],32
;;
ldf.fill f83=[r31],32
ldf.fill f84=[r32],32
;;
ldf.fill f85=[r31],32
ldf.fill f86=[r32],32
;;
ldf.fill f87=[r31],32
ldf.fill f88=[r32],32
;;
ldf.fill f89=[r31],32
ldf.fill f90=[r32],32
;;
ldf.fill f91=[r31],32
ldf.fill f92=[r32],32
;;
ldf.fill f93=[r31],32
ldf.fill f94=[r32],32
;;
ldf.fill f95=[r31],32
ldf.fill f96=[r32],32
;;
ldf.fill f97=[r31],32
ldf.fill f98=[r32],32
;;
ldf.fill f99=[r31],32
ldf.fill f100=[r32],32
;;
ldf.fill f101=[r31],32
ldf.fill f102=[r32],32
;;
ldf.fill f103=[r31],32
ldf.fill f104=[r32],32
;;
ldf.fill f105=[r31],32
ldf.fill f106=[r32],32
;;
ldf.fill f107=[r31],32
ldf.fill f108=[r32],32
;;
ldf.fill f109=[r31],32
ldf.fill f110=[r32],32
;;
ldf.fill f111=[r31],32
ldf.fill f112=[r32],32
;;
ldf.fill f113=[r31],32
ldf.fill f114=[r32],32
;;
ldf.fill f115=[r31],32
ldf.fill f116=[r32],32
;;
ldf.fill f117=[r31],32
ldf.fill f118=[r32],32
;;
ldf.fill f119=[r31],32
ldf.fill f120=[r32],32
;;
ldf.fill f121=[r31],32
ldf.fill f122=[r32],32
;;
ldf.fill f123=[r31],32
ldf.fill f124=[r32],32
;;
ldf.fill f125=[r31],32
ldf.fill f126=[r32]
;;
ldf.fill f127=[r31]
ssm psr.dfh
;;
srlz.d
br.ret.sptk rp
;;
END(restore_high_fp)