65 lines
1.3 KiB
ArmAsm
65 lines
1.3 KiB
ArmAsm
#################################################################
|
|
# #
|
|
# Copyright 2001, 2008 Fidelity Information Services, Inc #
|
|
# #
|
|
# This source code contains the intellectual property #
|
|
# of its copyright holder(s), and is made available #
|
|
# under a license. If you do not know the terms of #
|
|
# the license, please stop and do not read further. #
|
|
# #
|
|
#################################################################
|
|
|
|
# PAGE ,132
|
|
.title op_neg.s
|
|
|
|
# .386
|
|
# .MODEL FLAT, C
|
|
|
|
.include "linkage.si"
|
|
.INCLUDE "mval_def.si"
|
|
|
|
.sbttl op_neg
|
|
# PAGE +
|
|
.text
|
|
#
|
|
# op_neg ( mval *u, mval *v ) : u = -v
|
|
#
|
|
# edx - source mval = &v
|
|
# eax - destination mval = &u
|
|
|
|
.extern s2n
|
|
.extern underr
|
|
|
|
# PUBLIC op_neg
|
|
ENTRY op_neg
|
|
pushl %eax
|
|
mv_force_defined %edx, isdefined
|
|
popl %eax
|
|
mv_if_number %edx, numer
|
|
pushl %eax
|
|
pushl %edx
|
|
call s2n
|
|
popl %edx
|
|
popl %eax
|
|
numer: mv_if_notint %edx, float
|
|
movw $mval_m_int,mval_w_mvtype(%eax)
|
|
movl mval_l_m1(%edx),%edx
|
|
negl %edx
|
|
movl %edx,mval_l_m1(%eax)
|
|
ret
|
|
|
|
float: pushl %ebx # need a temp register
|
|
movw $mval_m_nm,mval_w_mvtype(%eax)
|
|
movb mval_b_exp(%edx),%bl
|
|
xorb $mval_esign_mask,%bl # flip the sign bit
|
|
movb %bl,mval_b_exp(%eax)
|
|
movl mval_l_m0(%edx),%ebx
|
|
movl %ebx,mval_l_m0(%eax)
|
|
movl mval_l_m1(%edx),%ebx
|
|
movl %ebx,mval_l_m1(%eax)
|
|
popl %ebx
|
|
ret
|
|
# op_neg ENDP
|
|
|
|
#END
|