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69 lines
1.8 KiB
69 lines
1.8 KiB
/*
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* Copyright 2002-2019 Intel Corporation.
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*
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* This software is provided to you as Sample Source Code as defined in the accompanying
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* End User License Agreement for the Intel(R) Software Development Products ("Agreement")
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* section 1.L.
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*
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* This software and the related documents are provided as is, with no express or implied
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* warranties, other than those that are expressly stated in the License.
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*/
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#include <asm_macros.h>
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.data
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.extern xsaveArea
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.extern flags
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.text
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# void DoXsavec();
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# This function calls xsave and stores the FP state in the given dst area.
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# The caller is expected to allocate enough space for the xsave area.
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# The function expects the given dst pointer to be properly aligned for the xsave instruction.
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.global NAME(DoXsavec)
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NAME(DoXsavec):
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lea PIC_VAR(flags), GCX_REG
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mov (GCX_REG), GAX_REG
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lea PIC_VAR(xsaveArea), GCX_REG
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xor GDX_REG, GDX_REG
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# Do xsave
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xsavec (GCX_REG)
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ret
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# void DoXsaveOpt();
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# This function calls xsaveopt and stores the FP state in the given dst area.
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# The caller is expected to allocate enough space for the xsaveopt area.
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# The function expects the given dst pointer to be properly aligned for the xsaveopt instruction.
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.global NAME(DoXsaveOpt)
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NAME(DoXsaveOpt):
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lea PIC_VAR(flags), GCX_REG
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mov (GCX_REG), GAX_REG
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lea PIC_VAR(xsaveArea), GCX_REG
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xor GDX_REG, GDX_REG
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# Do xsaveopt
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xsaveopt (GCX_REG)
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ret
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# void DoXrstor();
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# This function calls xrstor and restores the specified thetures from the xsave dst area.
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# The function expects the given dst pointer to be properly aligned
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.global NAME(DoXrstor)
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NAME(DoXrstor):
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lea PIC_VAR(flags), GCX_REG
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mov (GCX_REG), GAX_REG
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lea PIC_VAR(xsaveArea), GCX_REG
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xor GDX_REG, GDX_REG
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# Do xsaveopt
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xrstor (GCX_REG)
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ret
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