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##############################################################################
# setjmp.S -- CR16 setjmp routine #
# #
# Copyright (c) 2004 National Semiconductor Corporation #
# #
# 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. #
# #
# C library -- setjmp, longjmp #
# longjmp(a,v) #
# will generate a "return(v)" #
# from the last call to #
# setjmp(a) #
# by restoring r7-ra, sp, #
# and pc from 'a' #
# and doing a return. (Makes sure that longjmp never returns 0). #
##############################################################################
.text
.file "setjmp.s"
.align 4
.globl _setjmp
.align 4
_setjmp:
#r3, r2: .blkw
storw r7, 0(r3,r2)
addd $2, (r3,r2)
storw r8, 0(r3,r2)
addd $2, (r3,r2)
storw r9, 0(r3,r2)
addd $2, (r3,r2)
storw r10, 0(r3,r2)
addd $2, (r3,r2)
storw r11, 0(r3,r2)
addd $2, (r3,r2)
stord (r12), 0(r3,r2)
addd $4, (r3,r2)
stord (r13), 0(r3,r2)
addd $4, (r3,r2)
stord (ra), 0(r3,r2)
addd $4, (r3,r2)
stord (sp), 0(r3,r2)
movd $0,(r1,r0)
jump (ra)
.globl _longjmp
_longjmp:
#r3, r2: .blkw # pointer save area
#r5, r4: .blkw # ret vlaue
loadw 0(r3,r2), r7
addd $2, (r3,r2)
loadw 0(r3,r2), r8
addd $2, (r3,r2)
loadw 0(r3,r2), r9
addd $2, (r3,r2)
loadw 0(r3,r2), r10
addd $2, (r3,r2)
loadw 0(r3,r2), r11
addd $2, (r3,r2)
loadd 0(r3,r2), (r12)
addd $4, (r3,r2)
loadd 0(r3,r2), (r13)
addd $4, (r3,r2)
loadd 0(r3,r2), (ra)
addd $4, (r3,r2)
loadd 0(r3,r2), (sp)
#ifdef __INT32__
movd (r5,r4), (r1,r0)
cmpd $0, (r5,r4)
bne end1
movd $1, (r1,r0)
#else
movw r4, r0
cmpw $0, r4
bne end1
movw $1, r0
#endif
end1:
jump (ra)
.align 4
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