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* Dwarf: Hide the implicit pointer from a function-parameter which is passed

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by reference, and dereference the (hidden) pointer in the DW_AT_location
   block. This solves problems with function parameters defined as 'var'

git-svn-id: trunk@16683 -
This commit is contained in:
joost 2011-01-02 14:49:20 +00:00
parent 79813da090
commit 4bd0f6db7a
1 changed files with 15 additions and 9 deletions
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24
compiler/dbgdwarf.pas
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@ -2310,6 +2310,20 @@ implementation
templist.concat(tai_const.create_8bit(ord(DW_OP_breg0)+dreg)); templist.concat(tai_const.create_8bit(ord(DW_OP_breg0)+dreg));
templist.concat(tai_const.create_sleb128bit(sym.localloc.reference.offset+offset)); templist.concat(tai_const.create_sleb128bit(sym.localloc.reference.offset+offset));
blocksize:=1+Lengthsleb128(sym.localloc.reference.offset); blocksize:=1+Lengthsleb128(sym.localloc.reference.offset);
{$ifndef gdb_supports_DW_AT_variable_parameter}
{ Parameters which are passed by reference. (var and the like)
Hide the reference-pointer and dereference the pointer
in the DW_AT_location block.
}
if (sym.typ=paravarsym) and
paramanager.push_addr_param(sym.varspez,sym.vardef,tprocdef(sym.owner.defowner).proccalloption) and
not(vo_has_local_copy in sym.varoptions) and
not is_open_string(sym.vardef) then
begin
templist.concat(tai_const.create_8bit(ord(DW_OP_deref)));
inc(blocksize);
end
{$endif not gdb_supports_DW_AT_variable_parameter}
end; end;
end end
else else
@ -2396,15 +2410,7 @@ implementation
that). } that). }
if (vo_is_self in sym.varoptions) then if (vo_is_self in sym.varoptions) then
append_attribute(DW_AT_artificial,DW_FORM_flag,[true]); append_attribute(DW_AT_artificial,DW_FORM_flag,[true]);
{$ifndef gdb_supports_DW_AT_variable_parameter} append_labelentry_ref(DW_AT_type,def_dwarf_lab(def));
if (sym.typ=paravarsym) and
paramanager.push_addr_param(sym.varspez,sym.vardef,tprocdef(sym.owner.defowner).proccalloption) and
not(vo_has_local_copy in sym.varoptions) and
not is_open_string(sym.vardef) then
append_labelentry_ref(DW_AT_type,def_dwarf_ref_lab(def))
else
{$endif not gdb_supports_DW_AT_variable_parameter}
append_labelentry_ref(DW_AT_type,def_dwarf_lab(def));
templist.free; templist.free;