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Support DW_FORM_rnglistx for dwarf5 ranges computation

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This commit is contained in:
Jeremy 2023-09-13 23:07:33 -04:00
parent e068a3dadd
commit f5fd6942e2
No known key found for this signature in database
GPG Key ID: 19AA8270105E8EB4
1 changed files with 18 additions and 2 deletions
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20
src/symbols/symbols_with_libdwarf.cpp
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@ -34,6 +34,20 @@
#define DW_PR_DUx "llx"
#define DW_PR_DUu "llu"
Dwarf_Unsigned get_ranges_offset(Dwarf_Attribute attr) {
Dwarf_Unsigned off = 0;
Dwarf_Half attrform = 0;
dwarf_whatform(attr, &attrform, nullptr);
if (attrform == DW_FORM_rnglistx) {
int fres = dwarf_formudata(attr, &off, nullptr);
assert(fres == DW_DLV_OK);
} else {
int fres = dwarf_global_formref(attr, &off, nullptr);
assert(fres == DW_DLV_OK);
}
return off;
}
static int dwarf5_ranges(Dwarf_Die cu_die, Dwarf_Addr *lowest, Dwarf_Addr *highest) {
Dwarf_Unsigned offset = 0;
Dwarf_Attribute attr = 0;
@ -45,7 +59,8 @@ static int dwarf5_ranges(Dwarf_Die cu_die, Dwarf_Addr *lowest, Dwarf_Addr *highe
if(res != DW_DLV_OK) {
return res;
}
if(dwarf_global_formref(attr, &offset, nullptr) == DW_DLV_OK) {
offset = get_ranges_offset(attr);
if(true) {
Dwarf_Unsigned rlesetoffset = 0;
Dwarf_Unsigned rnglists_count = 0;
Dwarf_Rnglists_Head head = 0;
@ -54,7 +69,8 @@ static int dwarf5_ranges(Dwarf_Die cu_die, Dwarf_Addr *lowest, Dwarf_Addr *highe
/* offset is in .debug_rnglists */
res = dwarf_rnglists_get_rle_head(
attr,
attrform,offset,
attrform,
offset,
&head,
&rnglists_count,
&rlesetoffset,