https://bugs.kde.org/show_bug.cgi?id=461074
Mark Wielaard <m...@klomp.org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Ever confirmed|0 |1
Status|REPORTED |CONFIRMED
--- Comment #8 from Mark Wielaard <m...@klomp.org> ---
Thanks that makes clear what is going wrong.
The full expression is:
def_cfa_expression 10
[ 0] breg31 0
[ 2] bregx 46 0
[ 5] lit8
[ 6] mul
[ 7] plus_uconst 80
[ 9] plus
And we do indeed not handle DW_OP_bregx (0x92).
But since we do handle DW_OP_breg0 ... DW_OP_breg31 it shouldn't be too hard to
handle DW_OP_bregx too (the difference is in how the register argument is part
of the opcode in the first, but encoded as a uleb128 argument in the second.
See dwarfexpr_to_dag in coregrind/m_debuginfo/readdwarf.c (and somewhat
identical code, that does handle DW_OP_bregx in evaluate_Dwarf3_Expr
coregrind/m_debuginfo/d3basics.c.
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