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Add support for DW_OP_GNU_variable_value to readelf

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As indicated by the subject, this patch adds support for the DWARF
expression opcode DW_OP_GNU_variable_value to readelf.

It's pretty much a copy/paste of DW_OP_call_ref with the obvious name
changes for the printf statements.  The FIXME comment comes from that
copy/paste.

binutils/ChangeLog:

	* dwarf.c (decode_location_expresion): Add case for
	DW_OP_GNU_variable_value.
This commit is contained in:
Kevin Buettner 2018-07-30 15:35:45 -07:00
parent f7309df20c
commit f384a1f025
2 changed files with 24 additions and 0 deletions
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5
binutils/ChangeLog
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@ -1,3 +1,8 @@
2018-08-08 Kevin Buettner <kevinb@redhat.com>
* dwarf.c (decode_location_expresion): Add case for
DW_OP_GNU_variable_value.
2018-08-06 Claudiu Zissulescu <claziss@synopsys.com>
* readelf.c (display_arc_attribute): Print Tag_ARC_ATR_version.

19
binutils/dwarf.c
View File

@ -1575,6 +1575,25 @@ decode_location_expression (unsigned char * data,
data += bytes_read;
printf ("DW_OP_GNU_const_index <0x%s>", dwarf_vmatoa ("x", uvalue));
break;
case DW_OP_GNU_variable_value:
/* FIXME: Strictly speaking for 64-bit DWARF3 files
this ought to be an 8-byte wide computation. */
if (dwarf_version == -1)
{
printf (_("(DW_OP_GNU_variable_value in frame info)"));
/* No way to tell where the next op is, so just bail. */
return need_frame_base;
}
if (dwarf_version == 2)
{
SAFE_BYTE_GET_AND_INC (uvalue, data, pointer_size, end);
}
else
{
SAFE_BYTE_GET_AND_INC (uvalue, data, offset_size, end);
}
printf ("DW_OP_GNU_variable_value: <0x%s>", dwarf_vmatoa ("x", uvalue));
break;
/* HP extensions. */
case DW_OP_HP_is_value: