44 lines
1.1 KiB
ArmAsm
44 lines
1.1 KiB
ArmAsm
# Ikarus Scheme -- A compiler for R6RS Scheme.
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# Copyright (C) 2006,2007,2008 Abdulaziz Ghuloum
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License version 3 as
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# published by the Free Software Foundation.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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.text
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.globl cpu_has_sse2
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.globl _cpu_has_sse2
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.align 8
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cpu_has_sse2:
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_cpu_has_sse2:
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# callee-save registers are $ebx, %esi, %edi, %esp, $ebp
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# cpuid modifies %eax, %ebx, %ecx, %edx
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# only %ebx needs to be saved/restored
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#if __x86_64__
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push %rbx
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#else
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push %ebx
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#endif
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movl $1, %eax
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cpuid
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movl %edx, %eax
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sarl $26, %eax
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andl $1, %eax
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#if __x86_64__
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pop %rbx
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#else
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pop %ebx
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#endif
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ret
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