ikarus/src/cpu_has_sse2.s

36 lines
1016 B
ArmAsm

# Ikarus Scheme -- A compiler for R6RS Scheme.
# Copyright (C) 2006,2007 Abdulaziz Ghuloum
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 3 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
.text
.globl cpu_has_sse2
.globl _cpu_has_sse2
.align 8
cpu_has_sse2:
_cpu_has_sse2:
# callee-save registers are $ebx, %esi, %edi, %esp, $ebp
# cpuid modifies %eax, %ebx, %ecx, %edx
# only %ebx needs to be saved/restored
push %ebx
movl $1, %eax
cpuid
movl %edx, %eax
sarl $26, %eax
andl $1, %eax
pop %ebx
ret