[Libre-soc-bugs] [Bug 238] POWER Compressed Formal Standard writeup

bugzilla-daemon at libre-soc.org bugzilla-daemon at libre-soc.org
Mon Nov 23 07:46:25 GMT 2020


--- Comment #67 from Jacob Lifshay <programmerjake at gmail.com> ---
(In reply to Luke Kenneth Casson Leighton from comment #66)
> bottom line: if the 8 bit idea pans out but causes merry hell with the dual
> half-word memory reordering, we can always, just as is done with VLE
> Encoding, mandate that BE instruction encoding is required [note: *data* BE
> encoding *separate* and not included in that].

Except that BE instruction encoding is incompatible with the PowerPC64LE ABI
which requires that instruction encoding is set to LE on call/return/unwind.

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