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@@ -2,16 +2,16 @@
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#define _UAPI_ASM_X86_SIGCONTEXT_H
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/*
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- * Linux signal context definitions. The sigcontext includes a complex hierarchy of CPU
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- * and FPU state, available to user-space (on the stack) when a signal handler is
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- * executed.
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+ * Linux signal context definitions. The sigcontext includes a complex
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+ * hierarchy of CPU and FPU state, available to user-space (on the stack) when
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+ * a signal handler is executed.
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*
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- * As over the years this ABI grew from its very simple roots towards supporting more and
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- * more CPU state organically, some of the details (which were rather clever hacks back
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- * in the days) became a bit quirky by today.
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+ * As over the years this ABI grew from its very simple roots towards
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+ * supporting more and more CPU state organically, some of the details (which
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+ * were rather clever hacks back in the days) became a bit quirky by today.
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*
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- * The current ABI includes flexible provisions for future extensions, so we won't have
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- * to grow new quirks for quite some time. Promise!
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+ * The current ABI includes flexible provisions for future extensions, so we
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+ * won't have to grow new quirks for quite some time. Promise!
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*/
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#include <linux/compiler.h>
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@@ -23,27 +23,32 @@
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/*
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* Bytes 464..511 in the current 512-byte layout of the FXSAVE/FXRSTOR frame
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- * are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes
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- * are used to extend the fpstate pointer in the sigcontext, which now
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- * includes the extended state information along with fpstate information.
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+ * are reserved for SW usage. On CPUs supporting XSAVE/XRSTOR, these bytes are
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+ * used to extend the fpstate pointer in the sigcontext, which now includes the
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+ * extended state information along with fpstate information.
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*
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- * If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a sw_reserved.extended_size
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- * bytes large extended context area present. (The last 32-bit word of this extended
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- * area (at the fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to
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+ * If sw_reserved.magic1 == FP_XSTATE_MAGIC1 then there's a
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+ * sw_reserved.extended_size bytes large extended context area present. (The
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+ * last 32-bit word of this extended area (at the
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+ * fpstate+extended_size-FP_XSTATE_MAGIC2_SIZE address) is set to
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* FP_XSTATE_MAGIC2 so that you can sanity check your size calculations.)
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*
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- * This extended area typically grows with newer CPUs that have larger and larger
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- * XSAVE areas.
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+ * This extended area typically grows with newer CPUs that have larger and
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+ * larger XSAVE areas.
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*/
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struct _fpx_sw_bytes {
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- /* If set to FP_XSTATE_MAGIC1 then this is an xstate context. 0 if a legacy frame. */
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+ /*
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+ * If set to FP_XSTATE_MAGIC1 then this is an xstate context.
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+ * 0 if a legacy frame.
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+ */
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__u32 magic1;
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/*
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* Total size of the fpstate area:
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*
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* - if magic1 == 0 then it's sizeof(struct _fpstate)
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- * - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate) plus extensions (if any)
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+ * - if magic1 == FP_XSTATE_MAGIC1 then it's sizeof(struct _xstate)
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+ * plus extensions (if any)
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*/
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__u32 extended_size;
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@@ -66,13 +71,13 @@ struct _fpx_sw_bytes {
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/*
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* As documented in the iBCS2 standard:
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*
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- * The first part of "struct _fpstate" is just the normal i387
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- * hardware setup, the extra "status" word is used to save the
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- * coprocessor status word before entering the handler.
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+ * The first part of "struct _fpstate" is just the normal i387 hardware setup,
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+ * the extra "status" word is used to save the coprocessor status word before
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+ * entering the handler.
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*
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- * The FPU state data structure has had to grow to accommodate the
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- * extended FPU state required by the Streaming SIMD Extensions.
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- * There is no documented standard to accomplish this at the moment.
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+ * The FPU state data structure has had to grow to accommodate the extended FPU
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+ * state required by the Streaming SIMD Extensions. There is no documented
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+ * standard to accomplish this at the moment.
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*/
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/* 10-byte legacy floating point register: */
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@@ -137,8 +142,8 @@ struct _fpstate_32 {
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* 'struct _fpstate' so that you can always assume the _fpstate portion
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* exists so that you can check the magic value.
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*
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- * Note2: Reserved fields may someday contain valuable data. Always save/restore
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- * them when you change signal frames.
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+ * Note2: Reserved fields may someday contain valuable data. Always
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+ * save/restore them when you change signal frames.
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*/
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struct _fpstate_64 {
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__u16 cwd;
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