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sframe: doc: update documentation for pauth key in SFrame FDE

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	* libsframe/doc/sframe-spec.texi
This commit is contained in:
Indu Bhagat
2022-12-22 09:58:21 -08:00
parent d429702d9e
commit 2440ed038a
1 changed files with 7 additions and 1 deletions
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libsframe/doc/sframe-spec.texi
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@@ -398,10 +398,16 @@ The info word is a bitfield split into three parts. From MSB to LSB:
@multitable {Bit offset} {@code{isroot}} {Length of variable-length data for this type (some kinds only).}
@headitem Bit offset @tab Name @tab Description
@item 7--5
@item 7--6
@tab @code{unused}
@tab Unused bits.
@item 5
@tab @code{pauth_key}
@tab Specify which key is used for signing the return addresses in the SFrame
FDE. Two possible values: SFRAME_AARCH64_PAUTH_KEY_A (0) or
SFRAME_AARCH64_PAUTH_KEY_B (1).
@item 4
@tab @code{fdetype}
@tab SFRAME_FDE_TYPE_PCMASK (1) or SFRAME_FDE_TYPE_PCINC (0). @xref{The SFrame FDE types}.