mirror of
https://github.com/autc04/Retro68.git
synced 2024-11-27 14:50:23 +00:00
52 lines
2.4 KiB
ArmAsm
52 lines
2.4 KiB
ArmAsm
|
##############################################################################
|
||
|
|
# setjmp.S -- CRX 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:
|
||
|
|
#r2: .blkw
|
||
|
|
storm r2,{r7,r8,r9,r10,r11,r12,r13,r14}
|
||
|
|
stord sp,0(r2)
|
||
|
|
movd $0,r0
|
||
|
|
jump ra
|
||
|
|
|
||
|
|
.globl _longjmp
|
||
|
|
_longjmp:
|
||
|
|
#r2: .blkw # pointer save area
|
||
|
|
#r3: .blkw # ret vlaue
|
||
|
|
loadm r2, {r7,r8,r9,r10,r11,r12,r13,ra}
|
||
|
|
loadd 0(r2), sp
|
||
|
|
movd r3, r0
|
||
|
|
cmpd $0, r3
|
||
|
|
bne end1
|
||
|
|
movd $1, r0
|
||
|
|
end1:
|
||
|
|
jump ra
|
||
|
|
.align 4
|