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* [Bug sim/28649] New: sim-bits: WITH_TARGET_WORD_MSB does not handle current_target_byte_order
@ 2021-12-04 19:17 vapier at gentoo dot org
  0 siblings, 0 replies; only message in thread
From: vapier at gentoo dot org @ 2021-12-04 19:17 UTC (permalink / raw)
  To: gdb-prs

https://sourceware.org/bugzilla/show_bug.cgi?id=28649

            Bug ID: 28649
           Summary: sim-bits: WITH_TARGET_WORD_MSB does not handle
                    current_target_byte_order
           Product: gdb
           Version: unknown
            Status: NEW
          Severity: normal
          Priority: P2
         Component: sim
          Assignee: unassigned at sourceware dot org
          Reporter: vapier at gentoo dot org
                CC: vapier at gentoo dot org
  Target Milestone: ---

WITH_TARGET_WORD_MSB is fixed at compile time to little or big endian.  for
biendian arches that set current_target_byte_order on the fly, this build
constant gets out of sync.

this define only affects macros inside of sim-bits.h.  that header provides
explicit big & little endian funcs, and generic ones that select endian based
on WITH_TARGET_WORD_MSB.

need to review to see where those generic ones are used.  ideally we'd delete
WITH_TARGET_WORD_MSB entirely and use WITH_TARGET_BYTE_ORDER only, and have the
generic ones be dynamic if WITH_TARGET_BYTE_ORDER isn't a constant.

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2021-12-04 19:17 [Bug sim/28649] New: sim-bits: WITH_TARGET_WORD_MSB does not handle current_target_byte_order vapier at gentoo dot org

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