Function report |
Source Code:arch\x86\kernel\fpu\signal.c |
Create Date:2022-07-28 07:50:12 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:Prepare the SW reserved portion of the fxsave memory layout, indicating* the presence of the extended state information in the memory layout* pointed by the fpstate pointer in the sigcontext
Proto:void fpu__init_prepare_fx_sw_frame(void)
Type:void
Parameter:Nothing
466 | If set to FP_XSTATE_MAGIC1 then this is an xstate context.* 0 if a legacy frame. = FP_XSTATE_MAGIC1 |
467 | Total size of the fpstate area:* - if magic1 == 0 then it's sizeof(struct _fpstate)* - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate)* plus extensions (if any) = size |
468 | Feature bit mask (including FP/SSE/extended state) that is present* in the memory layout: = xfeatures_mask |
469 | Actual XSAVE state size, based on the xfeatures saved in the layout.* 'extended_size' is greater than 'xstate_size': = fpu_user_xstate_size |
473 | fsave_header_size = sizeof(structfregs_state) |
Name | Describe |
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fpu__init_system_xstate | Enable and initialize the xsave feature.* Called once per system bootup. |
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