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/* setjmp/longjmp routines for M68HC11 & M68HC12.
* Copyright (C) 1999, 2000, 2001, 2002 Stephane Carrez (stcarrez@nerim.fr)
*
* The authors hereby grant permission to use, copy, modify, distribute,
* and license this software and its documentation for any purpose, provided
* that existing copyright notices are retained in all copies and that this
* notice is included verbatim in any distributions. No written agreement,
* license, or royalty fee is required for any of the authorized uses.
* Modifications to this software may be copyrighted by their authors
* and need not follow the licensing terms described here, provided that
* the new terms are clearly indicated on the first page of each file where
* they apply.
*/
#if __INT__ == 32
# define val 4
# define INT32(X) X
#else
# define val 2
# define INT32(X)
#endif
#ifdef mc6811
# define REG(X) *X
#else
# define REG(X) X
#endif
.sect .text
.global setjmp
.global longjmp
#ifdef mc6811
setjmp:
xgdx
tsy
ldd 0,y
std 0,x
sty 2,x
ldd REG(_.frame)
std 4,x
ldd REG(_.d1)
std 6,x
ldd REG(_.d2)
std 8,x
ldd REG(_.d3)
std 10,x
ldd REG(_.d4)
std 12,x
ldd REG(_.d5)
std 14,x
ldd REG(_.d6)
std 16,x
ldd REG(_.d7)
std 18,x
ldd REG(_.d8)
std 20,x
INT32( ldx #0)
clra
clrb
rts
#else
setjmp:
xgdx
movw 0,sp,2,x+
sts 2,x+
movw _.frame,2,x+
movw _.d1,2,x+
movw _.d2,2,x+
movw _.d3,2,x+
movw _.d4,2,x+
movw _.d5,2,x+
movw _.d6,2,x+
movw _.d7,2,x+
movw _.d8,2,x+
INT32( ldx #0)
clra
clrb
rts
#endif
#ifdef mc6811
longjmp:
xgdx
tsy
ldd val,y
bne do_jump
ldd #1
do_jump:
xgdy
ldd 4,x
std REG(_.frame)
ldd 6,x
std REG(_.d1)
ldd 8,x
std REG(_.d2)
ldd 10,x
std REG(_.d3)
ldd 12,x
std REG(_.d4)
ldd 14,x
std REG(_.d5)
ldd 16,x
std REG(_.d6)
ldd 18,x
std REG(_.d7)
ldd 20,x
std REG(_.d8)
ldd 0,x
ldx 2,x
txs
std 0,x
INT32( ldx #0)
xgdy
rts
#else
longjmp:
xgdx
ldy val,sp
bne do_jump
ldy #1
do_jump:
ldd 4,x+
movw 2,x+,_.frame
movw 0,x,_.d1
movw 2,x,_.d2
movw 4,x,_.d3
movw 6,x,_.d4
movw 8,x,_.d5
movw 10,x,_.d6
movw 12,x,_.d7
movw 14,x,_.d8
ldx -4,x
txs
std 0,x
INT32( ldx #0)
xgdy
rts
#endif
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