/* print data in .debug_loc
There is no guarantee this will work because we are assuming
that all bytes are valid loclist data, that there are no
odd padding or garbage bytes. In normal use one gets
into here via an offset from .debug_info, so it could be
that bytes not referenced from .debug_info are garbage
or even zero padding. So this can fail (error off) as such bytes
can lead dwarf_get_loclist_entry() astray.
It's also wrong because we don't know what CU or frame each
loclist is from, so we don't know the address_size for sure.
*/
extern void
print_locs(Dwarf_Debug dbg)
{
Dwarf_Unsigned offset = 0;
Dwarf_Addr hipc_offset = 0;
Dwarf_Addr lopc_offset = 0;
Dwarf_Ptr data = 0;
Dwarf_Unsigned entry_len = 0;
Dwarf_Unsigned next_entry = 0;
struct esb_s exprstring;
int index = 0;
int lres = 0;
int fres = 0;
/* This is sometimes wrong, we need a frame-specific size. */
Dwarf_Half address_size = 0;
current_section_id = DEBUG_LOC;
/* Do nothing if not printing. */
if (!do_print_dwarf) {
return;
}
fres = dwarf_get_address_size(dbg, &address_size, &err);
if (fres != DW_DLV_OK) {
print_error(dbg, "dwarf_get_address_size", fres, err);
}
printf("\n.debug_loc");
printf("\nFormat <i o b e l>: "
"index section-offset begin-addr end-addr length-of-block-entry\n");
esb_constructor(&exprstring);
while ((lres = dwarf_get_loclist_entry(dbg, offset,
&hipc_offset, &lopc_offset,
&data, &entry_len,
&next_entry,
&err)) == DW_DLV_OK) {
get_string_from_locs(dbg,data,entry_len,address_size,
&exprstring);
/* Display offsets */
if (display_offsets) {
++index;
printf(" <iobel> [%8d] 0x%" DW_PR_XZEROS DW_PR_DUx,
index, offset);
if(verbose) {
printf(" <expr-off 0x%" DW_PR_XZEROS DW_PR_DUx ">",
next_entry - entry_len);
}
}
printf(" 0x%" DW_PR_XZEROS DW_PR_DUx
" 0x%" DW_PR_XZEROS DW_PR_DUx
" %8" DW_PR_DUu " %s\n",
(Dwarf_Unsigned) lopc_offset,
(Dwarf_Unsigned) hipc_offset, entry_len,
esb_get_string(&exprstring));
esb_empty_string(&exprstring);
offset = next_entry;
}
esb_destructor(&exprstring);
if (lres == DW_DLV_ERROR) {
print_error(dbg, "dwarf_get_loclist_entry", lres, err);
}
}
/* print data in .debug_loc
There is no guarantee this will work because we are assuming
that all bytes are valid loclist data, that there are no
odd padding or garbage bytes. In normal use one gets
into here via an offset from .debug_info, so it could be
that bytes not referenced from .debug_info are garbage
or even zero padding. So this can fail (error off) as such bytes
can lead dwarf_get_loclist_entry() astray.
It's also wrong because we don't know what CU or frame each
loclist is from, so we don't know the address_size for sure.
*/
extern void
print_locs(Dwarf_Debug dbg)
{
Dwarf_Unsigned offset = 0;
Dwarf_Addr hipc_offset = 0;
Dwarf_Addr lopc_offset = 0;
Dwarf_Ptr data = 0;
Dwarf_Unsigned entry_len = 0;
Dwarf_Unsigned next_entry = 0;
int index = 0;
int lres = 0;
int fres = 0;
Dwarf_Half address_size = 0;
Dwarf_Half offset_size = 0;
Dwarf_Half version = 2; /* FAKE */
Dwarf_Error err = 0;
struct esb_s exprstring;
unsigned loopct = 0;
esb_constructor(&exprstring);
glflags.current_section_id = DEBUG_LOC;
/* Do nothing if not printing. */
if (!glflags.gf_do_print_dwarf) {
return;
}
if(!glflags.gf_use_old_dwarf_loclist) {
printf("\n");
printf("Printing location lists with -c is no longer supported\n");
return;
}
fres = dwarf_get_address_size(dbg, &address_size, &err);
if (fres != DW_DLV_OK) {
print_error(dbg, "dwarf_get_address_size", fres, err);
}
fres = dwarf_get_offset_size(dbg, &offset_size, &err);
if (fres != DW_DLV_OK) {
print_error(dbg, "dwarf_get_address_size", fres, err);
}
#if 0
/* This print code not needed as cannot be safely used
and uses old interface. */
{
struct esb_s truename;
char buf[DWARF_SECNAME_BUFFER_SIZE];
esb_constructor_fixed(&truename,buf,sizeof(buf));
get_true_section_name(dbg,".debug_loc",
&truename,TRUE);
printf("\n%s\n",sanitized(esb_get_string(&truename)));
esb_destructor(&truename);
}
#endif
printf("Format <i o b e l>: "
"index section-offset begin-addr end-addr length-of-block-entry\n");
/* Pre=October 2015 version. */
for (loopct = 0;
(lres = dwarf_get_loclist_entry(dbg, offset,
&hipc_offset, &lopc_offset,
&data, &entry_len,
&next_entry,
&err)) == DW_DLV_OK;
++loopct) {
get_string_from_locs(dbg,data,entry_len,address_size,
offset_size,
version,
&exprstring);
/* Display offsets */
if (!loopct) {
/* This print code not needed as cannot be safely used
and uses old interface. */
print_secname(dbg,".debug_loc");
}
if (glflags.gf_display_offsets) {
++index;
printf(" <iobel> [%8d] 0x%" DW_PR_XZEROS DW_PR_DUx,
index, offset);
if (glflags.verbose) {
printf(" <expr-off 0x%" DW_PR_XZEROS DW_PR_DUx ">",
next_entry - entry_len);
}
}
printf(" 0x%" DW_PR_XZEROS DW_PR_DUx
" 0x%" DW_PR_XZEROS DW_PR_DUx
" %8" DW_PR_DUu " %s\n",
(Dwarf_Unsigned) lopc_offset,
(Dwarf_Unsigned) hipc_offset, entry_len,
esb_get_string(&exprstring));
esb_empty_string(&exprstring);
offset = next_entry;
}
if (!loopct) {
/* This print code not needed as cannot be safely used
and uses old interface. */
print_secname(dbg,".debug_loc");
}
esb_destructor(&exprstring);
if (lres == DW_DLV_ERROR) {
print_error(dbg, "dwarf_get_loclist_entry", lres, err);
}
}
