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authorJakub Jelinek <jakub@redhat.com>2010-04-01 05:24:52 +0000
committerJakub Jelinek <jakub@redhat.com>2010-04-01 05:24:52 +0000
commitc07cbdd706fb9521b85fa100bb7507c44f92653f (patch)
tree132e6be1203a55c6cdafac3074cd24e530fcf7b5 /bfd/dwarf2.c
parent0db9b91c94a19133307e24644b54bbad1f1c0033 (diff)
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* dwarf2.c (read_attribute_value): Handle CU version 4
for DW_FORM_ref_addr, handle DW_FORM_sec_offset, DW_FORM_exprloc and DW_FORM_flag_present. For unknown form value return NULL. (scan_unit_for_symbols): For DW_AT_location handle DW_FORM_exprloc like DW_FORM_block. (parse_comp_unit): Allow CU version 4.
Diffstat (limited to 'bfd/dwarf2.c')
-rw-r--r--bfd/dwarf2.c19
1 files changed, 16 insertions, 3 deletions
diff --git a/bfd/dwarf2.c b/bfd/dwarf2.c
index 1eae5e1..adc8314 100644
--- a/bfd/dwarf2.c
+++ b/bfd/dwarf2.c
@@ -760,7 +760,7 @@ read_attribute_value (struct attribute *attr,
case DW_FORM_ref_addr:
/* DW_FORM_ref_addr is an address in DWARF2, and an offset in
DWARF3. */
- if (unit->version == 3)
+ if (unit->version == 3 || unit->version == 4)
{
if (unit->offset_size == 4)
attr->u.val = read_4_bytes (unit->abfd, info_ptr);
@@ -774,6 +774,13 @@ read_attribute_value (struct attribute *attr,
attr->u.val = read_address (unit, info_ptr);
info_ptr += unit->addr_size;
break;
+ case DW_FORM_sec_offset:
+ if (unit->offset_size == 4)
+ attr->u.val = read_4_bytes (unit->abfd, info_ptr);
+ else
+ attr->u.val = read_8_bytes (unit->abfd, info_ptr);
+ info_ptr += unit->offset_size;
+ break;
case DW_FORM_block2:
amt = sizeof (struct dwarf_block);
blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
@@ -816,6 +823,7 @@ read_attribute_value (struct attribute *attr,
attr->u.str = read_indirect_string (unit, info_ptr, &bytes_read);
info_ptr += bytes_read;
break;
+ case DW_FORM_exprloc:
case DW_FORM_block:
amt = sizeof (struct dwarf_block);
blk = (struct dwarf_block *) bfd_alloc (abfd, amt);
@@ -846,6 +854,9 @@ read_attribute_value (struct attribute *attr,
attr->u.val = read_1_byte (abfd, info_ptr);
info_ptr += 1;
break;
+ case DW_FORM_flag_present:
+ attr->u.val = 1;
+ break;
case DW_FORM_sdata:
attr->u.sval = read_signed_leb128 (abfd, info_ptr, &bytes_read);
info_ptr += bytes_read;
@@ -887,6 +898,7 @@ read_attribute_value (struct attribute *attr,
(*_bfd_error_handler) (_("Dwarf Error: Invalid or unhandled FORM value: %u."),
form);
bfd_set_error (bfd_error_bad_value);
+ return NULL;
}
return info_ptr;
}
@@ -2113,6 +2125,7 @@ scan_unit_for_symbols (struct comp_unit *unit)
case DW_FORM_block1:
case DW_FORM_block2:
case DW_FORM_block4:
+ case DW_FORM_exprloc:
if (*attr.u.blk->data == DW_OP_addr)
{
var->stack = 0;
@@ -2216,9 +2229,9 @@ parse_comp_unit (struct dwarf2_debug *stash,
addr_size = read_1_byte (abfd, info_ptr);
info_ptr += 1;
- if (version != 2 && version != 3)
+ if (version != 2 && version != 3 && version != 4)
{
- (*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2 and 3 information."), version);
+ (*_bfd_error_handler) (_("Dwarf Error: found dwarf version '%u', this reader only handles version 2, 3 and 4 information."), version);
bfd_set_error (bfd_error_bad_value);
return 0;
}