[v2,3/4] libdw: Apply DWARF package file section offsets where appropriate
Commit Message
From: Omar Sandoval <osandov@fb.com>
The final piece of DWARF package file support is that offsets have to be
interpreted relative to the section offset from the package index.
.debug_abbrev.dwo is already covered, so sprinkle around calls to
dwarf_cu_dwp_section_info for the remaining sections: .debug_line.dwo,
.debug_loclists.dwo/.debug_loc.dwo, .debug_str_offsets.dwo,
.debug_macro.dwo/.debug_macinfo.dwo, and .debug_rnglists.dwo. With all
of that in place, we can finally test various libdw functions on dwp
files.
* libdw/dwarf_getmacros.c (get_macinfo_table): Call
dwarf_cu_dwp_section_info and add offset to line_offset.
(get_offset_from): Call dwarf_cu_dwp_section_info and add offset
to *retp.
* libdw/libdwP.h (str_offsets_base_off): Call
dwarf_cu_dwp_section_info and add offset.
(__libdw_cu_ranges_base): Ditto.
(__libdw_cu_locs_base): Ditto.
* libdw/dwarf_getlocation.c (initial_offset): Call
dwarf_cu_dwp_section_info and add offset to start_offset.
* tests/run-varlocs.sh: Check testfile-dwp-5 and testfile-dwp-4.
* tests/run-all-dwarf-ranges.sh: Check testfile-dwp-5 and
testfile-dwp-4.
* tests/run-dwarf-getmacros.sh: Check testfile-dwp-5 and
testfile-dwp-4-strict.
* tests/run-get-units-split.sh: Check testfile-dwp-5,
testfile-dwp-4, and testfile-dwp-4-strict.
Signed-off-by: Omar Sandoval <osandov@fb.com>
---
libdw/dwarf_getlocation.c | 6 +
libdw/dwarf_getmacros.c | 26 +-
libdw/libdwP.h | 42 +-
tests/run-all-dwarf-ranges.sh | 114 +++
tests/run-dwarf-getmacros.sh | 1412 +++++++++++++++++++++++++++++++++
tests/run-get-units-split.sh | 18 +
tests/run-varlocs.sh | 112 +++
7 files changed, 1715 insertions(+), 15 deletions(-)
Comments
Hi Omar,
On Wed, 2023-12-06 at 01:22 -0800, Omar Sandoval wrote:
> The final piece of DWARF package file support is that offsets have to be
> interpreted relative to the section offset from the package index.
> .debug_abbrev.dwo is already covered, so sprinkle around calls to
> dwarf_cu_dwp_section_info for the remaining sections: .debug_line.dwo,
> .debug_loclists.dwo/.debug_loc.dwo, .debug_str_offsets.dwo,
> .debug_macro.dwo/.debug_macinfo.dwo, and .debug_rnglists.dwo. With all
> of that in place, we can finally test various libdw functions on dwp
> files.
So the offsets for DW_SECT_INFO, DW_SECT_TYPES and DW_SECT_ABBREV were
already taken into account when setting up a cu from a dwp.
With this patch __libdw_cu_str_off_base/str_offsets_base_off handles
DW_SECT_STR_OFFSETS which is used in dwarf_formstring and
dwarf_getmacros.
__libdw_cu_ranges_base handles DW_SECT_RNGLISTS, which is used by
dwarf_ranges. And __libdw_formptr has a special case for
DW_FORM_sec_offset for IDX_debug_ranges && version < 5 && unit_type ==
DW_UT_split_compile to also uses __libdw_cu_ranges_base.
__libdw_cu_locs_base handles DW_SECT_LOCLISTS which is used in
dwarf_getlocation through initial_offset. I do wonder why the special
case in __libdw_formptr isn't needed here too.
dwarf_getmacros handles DW_SECT_MACRO through get_offset_from. And when
the macros need to refer to the line table, it also handles
DW_SECT_LINE.
Don't we also need to handle DW_SECT_LINE in dwarf_getsrclines and
dwarf_next_lines when looking for DW_AT_stmt_list?
> * libdw/dwarf_getmacros.c (get_macinfo_table): Call
> dwarf_cu_dwp_section_info and add offset to line_offset.
> (get_offset_from): Call dwarf_cu_dwp_section_info and add offset
> to *retp.
> * libdw/libdwP.h (str_offsets_base_off): Call
> dwarf_cu_dwp_section_info and add offset.
> (__libdw_cu_ranges_base): Ditto.
> (__libdw_cu_locs_base): Ditto.
> * libdw/dwarf_getlocation.c (initial_offset): Call
> dwarf_cu_dwp_section_info and add offset to start_offset.
> * tests/run-varlocs.sh: Check testfile-dwp-5 and testfile-dwp-4.
> * tests/run-all-dwarf-ranges.sh: Check testfile-dwp-5 and
> testfile-dwp-4.
> * tests/run-dwarf-getmacros.sh: Check testfile-dwp-5 and
> testfile-dwp-4-strict.
> * tests/run-get-units-split.sh: Check testfile-dwp-5,
> testfile-dwp-4, and testfile-dwp-4-strict.
The code and tests look good. run-varlocs.sh seems good, which seems to
confirm DW_SECT_LOCLISTS is handled correctly (but why doesn't it need
a hack similar to ranges in __libdw_formptr?).
We might want to add a test for run-next-lines.sh and run-next-
files.sh?
Thanks,
Mark
On Fri, Feb 16, 2024 at 04:00:47PM +0100, Mark Wielaard wrote:
> Hi Omar,
>
> On Wed, 2023-12-06 at 01:22 -0800, Omar Sandoval wrote:
> > The final piece of DWARF package file support is that offsets have to be
> > interpreted relative to the section offset from the package index.
> > .debug_abbrev.dwo is already covered, so sprinkle around calls to
> > dwarf_cu_dwp_section_info for the remaining sections: .debug_line.dwo,
> > .debug_loclists.dwo/.debug_loc.dwo, .debug_str_offsets.dwo,
> > .debug_macro.dwo/.debug_macinfo.dwo, and .debug_rnglists.dwo. With all
> > of that in place, we can finally test various libdw functions on dwp
> > files.
>
> So the offsets for DW_SECT_INFO, DW_SECT_TYPES and DW_SECT_ABBREV were
> already taken into account when setting up a cu from a dwp.
>
> With this patch __libdw_cu_str_off_base/str_offsets_base_off handles
> DW_SECT_STR_OFFSETS which is used in dwarf_formstring and
> dwarf_getmacros.
>
> __libdw_cu_ranges_base handles DW_SECT_RNGLISTS, which is used by
> dwarf_ranges. And __libdw_formptr has a special case for
> DW_FORM_sec_offset for IDX_debug_ranges && version < 5 && unit_type ==
> DW_UT_split_compile to also uses __libdw_cu_ranges_base.
>
> __libdw_cu_locs_base handles DW_SECT_LOCLISTS which is used in
> dwarf_getlocation through initial_offset. I do wonder why the special
> case in __libdw_formptr isn't needed here too.
>
> dwarf_getmacros handles DW_SECT_MACRO through get_offset_from. And when
> the macros need to refer to the line table, it also handles
> DW_SECT_LINE.
>
> Don't we also need to handle DW_SECT_LINE in dwarf_getsrclines and
> dwarf_next_lines when looking for DW_AT_stmt_list?
.debug_line is the odd one out in split DWARF: the skeleton file
contains the full .debug_line, and the DWO or DWP files have a skeleton
.debug_line.dwo that only contains the directory and file name tables
(for DW_AT_file and macro info to reference). dwarf_getsrclines and co.
read from the skeleton file, not the DWP file, meaning they shouldn't
use DW_SECT_LINE.
> > * libdw/dwarf_getmacros.c (get_macinfo_table): Call
> > dwarf_cu_dwp_section_info and add offset to line_offset.
> > (get_offset_from): Call dwarf_cu_dwp_section_info and add offset
> > to *retp.
> > * libdw/libdwP.h (str_offsets_base_off): Call
> > dwarf_cu_dwp_section_info and add offset.
> > (__libdw_cu_ranges_base): Ditto.
> > (__libdw_cu_locs_base): Ditto.
> > * libdw/dwarf_getlocation.c (initial_offset): Call
> > dwarf_cu_dwp_section_info and add offset to start_offset.
> > * tests/run-varlocs.sh: Check testfile-dwp-5 and testfile-dwp-4.
> > * tests/run-all-dwarf-ranges.sh: Check testfile-dwp-5 and
> > testfile-dwp-4.
> > * tests/run-dwarf-getmacros.sh: Check testfile-dwp-5 and
> > testfile-dwp-4-strict.
> > * tests/run-get-units-split.sh: Check testfile-dwp-5,
> > testfile-dwp-4, and testfile-dwp-4-strict.
>
> The code and tests look good. run-varlocs.sh seems good, which seems to
> confirm DW_SECT_LOCLISTS is handled correctly (but why doesn't it need
> a hack similar to ranges in __libdw_formptr?).
I think it's because ranges have the uniquely weird behavior in DWARF 4
GNU Debug Fission that DW_AT_GNU_ranges_base is in the skeleton file but
used to interpret the split file. This was cleaned up for DWARF 5 (as I
documented in commit c9c9ffae725009b192b40e2d89035f353ae7055f), and
there was no base attribute for location lists in DWARF 4, so it's not
applicable.
> We might want to add a test for run-next-lines.sh and run-next-
> files.sh?
Good idea, I'll send an updated version with those tests.
Thanks!
Omar
On Thu, Feb 22, 2024 at 04:53:19PM -0800, Omar Sandoval wrote:
> On Fri, Feb 16, 2024 at 04:00:47PM +0100, Mark Wielaard wrote:
> > Hi Omar,
> >
> > On Wed, 2023-12-06 at 01:22 -0800, Omar Sandoval wrote:
> > > The final piece of DWARF package file support is that offsets have to be
> > > interpreted relative to the section offset from the package index.
> > > .debug_abbrev.dwo is already covered, so sprinkle around calls to
> > > dwarf_cu_dwp_section_info for the remaining sections: .debug_line.dwo,
> > > .debug_loclists.dwo/.debug_loc.dwo, .debug_str_offsets.dwo,
> > > .debug_macro.dwo/.debug_macinfo.dwo, and .debug_rnglists.dwo. With all
> > > of that in place, we can finally test various libdw functions on dwp
> > > files.
> >
> > So the offsets for DW_SECT_INFO, DW_SECT_TYPES and DW_SECT_ABBREV were
> > already taken into account when setting up a cu from a dwp.
> >
> > With this patch __libdw_cu_str_off_base/str_offsets_base_off handles
> > DW_SECT_STR_OFFSETS which is used in dwarf_formstring and
> > dwarf_getmacros.
> >
> > __libdw_cu_ranges_base handles DW_SECT_RNGLISTS, which is used by
> > dwarf_ranges. And __libdw_formptr has a special case for
> > DW_FORM_sec_offset for IDX_debug_ranges && version < 5 && unit_type ==
> > DW_UT_split_compile to also uses __libdw_cu_ranges_base.
> >
> > __libdw_cu_locs_base handles DW_SECT_LOCLISTS which is used in
> > dwarf_getlocation through initial_offset. I do wonder why the special
> > case in __libdw_formptr isn't needed here too.
> >
> > dwarf_getmacros handles DW_SECT_MACRO through get_offset_from. And when
> > the macros need to refer to the line table, it also handles
> > DW_SECT_LINE.
> >
> > Don't we also need to handle DW_SECT_LINE in dwarf_getsrclines and
> > dwarf_next_lines when looking for DW_AT_stmt_list?
>
> .debug_line is the odd one out in split DWARF: the skeleton file
> contains the full .debug_line, and the DWO or DWP files have a skeleton
> .debug_line.dwo that only contains the directory and file name tables
> (for DW_AT_file and macro info to reference). dwarf_getsrclines and co.
> read from the skeleton file, not the DWP file, meaning they shouldn't
> use DW_SECT_LINE.
Ah, I guess you can call dwarf_getsrclines/dwarf_next_lines on the dwp
file itself, where DW_SECT_LINE may be applicable. I need to think about
that some more...
Hi Omar,
On Thu, Feb 22, 2024 at 04:53:19PM -0800, Omar Sandoval wrote:
> On Fri, Feb 16, 2024 at 04:00:47PM +0100, Mark Wielaard wrote:
> > The code and tests look good. run-varlocs.sh seems good, which seems to
> > confirm DW_SECT_LOCLISTS is handled correctly (but why doesn't it need
> > a hack similar to ranges in __libdw_formptr?).
>
> I think it's because ranges have the uniquely weird behavior in DWARF 4
> GNU Debug Fission that DW_AT_GNU_ranges_base is in the skeleton file but
> used to interpret the split file. This was cleaned up for DWARF 5 (as I
> documented in commit c9c9ffae725009b192b40e2d89035f353ae7055f), and
> there was no base attribute for location lists in DWARF 4, so it's not
> applicable.
Thanks. I forgot about commit c9c9ffae7 "libdw: Handle DW_AT_ranges in
split DWARF 5 skeleton in dwarf_ranges". That documents it nicely.
Cheers,
Mark
Hi Omar,
On Thu, Feb 22, 2024 at 05:03:44PM -0800, Omar Sandoval wrote:
> On Thu, Feb 22, 2024 at 04:53:19PM -0800, Omar Sandoval wrote:
> > On Fri, Feb 16, 2024 at 04:00:47PM +0100, Mark Wielaard wrote:
> > > Don't we also need to handle DW_SECT_LINE in dwarf_getsrclines and
> > > dwarf_next_lines when looking for DW_AT_stmt_list?
> >
> > .debug_line is the odd one out in split DWARF: the skeleton file
> > contains the full .debug_line, and the DWO or DWP files have a skeleton
> > .debug_line.dwo that only contains the directory and file name tables
> > (for DW_AT_file and macro info to reference). dwarf_getsrclines and co.
> > read from the skeleton file, not the DWP file, meaning they shouldn't
> > use DW_SECT_LINE.
>
> Ah, I guess you can call dwarf_getsrclines/dwarf_next_lines on the dwp
> file itself, where DW_SECT_LINE may be applicable. I need to think about
> that some more...
So reading the DWARF5 spec, it says a split DWARF CU/TU DIE may have a
DW_AT_stmt_list, which are interpreted as relative to the base offset
for .debug_line.dwo. And these tables contain only the directory and
filename lists needed to interpret DW_AT_decl_file attributes in the
debugging information entries. Actual line number tables remain in the
.debug_line section, and remain in the relocatable object (.o) files.
So I think the intention is that the main .debug_line (skeleton)
section does contain the actual line number table, but only those
file/dir table entries that are referenced from that. Not any that are
only referenced from the DW_AT_decl_file attributes (which should only
appear in the split DWARF DIEs). Maybe in practice these overlap
completely, so there is no savings and they are in practice
identical. But I don't see anything in the spec that implies you
should interpret a lineptr in the .debug_info.dwo as relative to the
.debug_line section in the skeleton.
Cheers,
Mark
On Sat, Feb 24, 2024 at 03:00:04PM +0100, Mark Wielaard wrote:
> Hi Omar,
>
> On Thu, Feb 22, 2024 at 05:03:44PM -0800, Omar Sandoval wrote:
> > On Thu, Feb 22, 2024 at 04:53:19PM -0800, Omar Sandoval wrote:
> > > On Fri, Feb 16, 2024 at 04:00:47PM +0100, Mark Wielaard wrote:
> > > > Don't we also need to handle DW_SECT_LINE in dwarf_getsrclines and
> > > > dwarf_next_lines when looking for DW_AT_stmt_list?
> > >
> > > .debug_line is the odd one out in split DWARF: the skeleton file
> > > contains the full .debug_line, and the DWO or DWP files have a skeleton
> > > .debug_line.dwo that only contains the directory and file name tables
> > > (for DW_AT_file and macro info to reference). dwarf_getsrclines and co.
> > > read from the skeleton file, not the DWP file, meaning they shouldn't
> > > use DW_SECT_LINE.
> >
> > Ah, I guess you can call dwarf_getsrclines/dwarf_next_lines on the dwp
> > file itself, where DW_SECT_LINE may be applicable. I need to think about
> > that some more...
>
> So reading the DWARF5 spec, it says a split DWARF CU/TU DIE may have a
> DW_AT_stmt_list, which are interpreted as relative to the base offset
> for .debug_line.dwo. And these tables contain only the directory and
> filename lists needed to interpret DW_AT_decl_file attributes in the
> debugging information entries. Actual line number tables remain in the
> .debug_line section, and remain in the relocatable object (.o) files.
>
> So I think the intention is that the main .debug_line (skeleton)
> section does contain the actual line number table, but only those
> file/dir table entries that are referenced from that. Not any that are
> only referenced from the DW_AT_decl_file attributes (which should only
> appear in the split DWARF DIEs). Maybe in practice these overlap
> completely, so there is no savings and they are in practice
> identical. But I don't see anything in the spec that implies you
> should interpret a lineptr in the .debug_info.dwo as relative to the
> .debug_line section in the skeleton.
Sorry, my reply was confusing, and I hadn't checked all of the relevant
functions yet. Let me try again:
As you said, the skeleton file has a .debug_line with the actual line
number table, and the DWP file has a .debug_line.dwo with only
file/directory name tables. If we're reading from the skeleton file,
then we don't need to apply the DW_SECT_LINE offset.
dwarf_getsrclines in particular always uses the skeleton's .debug_line
even if called on a split CU, so it doesn't need to be updated.
dwarf_getsrcfiles and dwarf_next_lines can use the split
.debug_line.dwo, so they do need to be updated.
Updated patch series incoming...
Thanks,
Omar
@@ -812,6 +812,12 @@ initial_offset (Dwarf_Attribute *attr, ptrdiff_t *offset)
: DWARF_E_NO_DEBUG_LOCLISTS),
NULL, &start_offset) == NULL)
return -1;
+
+ Dwarf_Off loc_off;
+ if (INTUSE(dwarf_cu_dwp_section_info) (attr->cu, DW_SECT_LOCLISTS,
+ &loc_off, NULL) != 0)
+ return -1;
+ start_offset += loc_off;
}
*offset = start_offset;
@@ -47,7 +47,15 @@ get_offset_from (Dwarf_Die *die, int name, Dwarf_Word *retp)
return -1;
/* Offset into the corresponding section. */
- return INTUSE(dwarf_formudata) (&attr, retp);
+ if (INTUSE(dwarf_formudata) (&attr, retp) != 0)
+ return -1;
+
+ Dwarf_Off offset;
+ if (INTUSE(dwarf_cu_dwp_section_info) (die->cu, DW_SECT_MACRO, &offset, NULL)
+ != 0)
+ return -1;
+ *retp += offset;
+ return 0;
}
static int
@@ -131,6 +139,14 @@ get_macinfo_table (Dwarf *dbg, Dwarf_Word macoff, Dwarf_Die *cudie)
else if (cudie->cu->unit_type == DW_UT_split_compile
&& dbg->sectiondata[IDX_debug_line] != NULL)
line_offset = 0;
+ if (line_offset != (Dwarf_Off) -1)
+ {
+ Dwarf_Off dwp_offset;
+ if (INTUSE(dwarf_cu_dwp_section_info) (cudie->cu, DW_SECT_LINE,
+ &dwp_offset, NULL) != 0)
+ return NULL;
+ line_offset += dwp_offset;
+ }
Dwarf_Macro_Op_Table *table = libdw_alloc (dbg, Dwarf_Macro_Op_Table,
macinfo_data_size, 1);
@@ -188,6 +204,14 @@ get_table_for_offset (Dwarf *dbg, Dwarf_Word macoff,
if (unlikely (INTUSE(dwarf_formudata) (attr, &line_offset) != 0))
return NULL;
}
+ if (line_offset != (Dwarf_Off) -1 && cudie != NULL)
+ {
+ Dwarf_Off dwp_offset;
+ if (INTUSE(dwarf_cu_dwp_section_info) (cudie->cu, DW_SECT_LINE,
+ &dwp_offset, NULL) != 0)
+ return NULL;
+ line_offset += dwp_offset;
+ }
uint8_t address_size;
if (cudie != NULL)
@@ -1108,25 +1108,30 @@ str_offsets_base_off (Dwarf *dbg, Dwarf_CU *cu)
cu = first_cu;
}
+ Dwarf_Off off = 0;
if (cu != NULL)
{
if (cu->str_off_base == (Dwarf_Off) -1)
{
+ Dwarf_Off dwp_offset;
+ if (dwarf_cu_dwp_section_info (cu, DW_SECT_STR_OFFSETS, &dwp_offset,
+ NULL) == 0)
+ off = dwp_offset;
Dwarf_Die cu_die = CUDIE(cu);
Dwarf_Attribute attr;
if (dwarf_attr (&cu_die, DW_AT_str_offsets_base, &attr) != NULL)
{
- Dwarf_Word off;
- if (dwarf_formudata (&attr, &off) == 0)
+ Dwarf_Word base;
+ if (dwarf_formudata (&attr, &base) == 0)
{
- cu->str_off_base = off;
+ cu->str_off_base = off + base;
return cu->str_off_base;
}
}
/* For older DWARF simply assume zero (no header). */
if (cu->version < 5)
{
- cu->str_off_base = 0;
+ cu->str_off_base = off;
return cu->str_off_base;
}
@@ -1139,7 +1144,6 @@ str_offsets_base_off (Dwarf *dbg, Dwarf_CU *cu)
/* No str_offsets_base attribute, we have to assume "zero".
But there could be a header first. */
- Dwarf_Off off = 0;
if (dbg == NULL)
goto no_header;
@@ -1181,7 +1185,7 @@ str_offsets_base_off (Dwarf *dbg, Dwarf_CU *cu)
/* padding */
read_2ubyte_unaligned_inc (dbg, readp);
- off = (Dwarf_Off) (readp - start);
+ off += (Dwarf_Off) (readp - start);
no_header:
if (cu != NULL)
@@ -1219,18 +1223,23 @@ __libdw_cu_ranges_base (Dwarf_CU *cu)
}
else
{
+ Dwarf_Off dwp_offset;
+ if (dwarf_cu_dwp_section_info (cu, DW_SECT_RNGLISTS, &dwp_offset,
+ NULL) == 0)
+ offset = dwp_offset;
+
if (dwarf_attr (&cu_die, DW_AT_rnglists_base, &attr) != NULL)
{
Dwarf_Word off;
if (dwarf_formudata (&attr, &off) == 0)
- offset = off;
+ offset += off;
}
/* There wasn't an rnglists_base, if the Dwarf does have a
.debug_rnglists section, then it might be we need the
base after the first header. */
Elf_Data *data = cu->dbg->sectiondata[IDX_debug_rnglists];
- if (offset == 0 && data != NULL)
+ if (offset == dwp_offset && data != NULL)
{
Dwarf *dbg = cu->dbg;
const unsigned char *readp = data->d_buf;
@@ -1276,8 +1285,8 @@ __libdw_cu_ranges_base (Dwarf_CU *cu)
if (unit_length - 8 < needed)
goto no_header;
- offset = (Dwarf_Off) (offset_array_start
- - (unsigned char *) data->d_buf);
+ offset += (Dwarf_Off) (offset_array_start
+ - (unsigned char *) data->d_buf);
}
}
no_header:
@@ -1295,20 +1304,25 @@ __libdw_cu_locs_base (Dwarf_CU *cu)
if (cu->locs_base == (Dwarf_Off) -1)
{
Dwarf_Off offset = 0;
+ Dwarf_Off dwp_offset;
+ if (dwarf_cu_dwp_section_info (cu, DW_SECT_LOCLISTS, &dwp_offset, NULL)
+ == 0)
+ offset = dwp_offset;
+
Dwarf_Die cu_die = CUDIE(cu);
Dwarf_Attribute attr;
if (dwarf_attr (&cu_die, DW_AT_loclists_base, &attr) != NULL)
{
Dwarf_Word off;
if (dwarf_formudata (&attr, &off) == 0)
- offset = off;
+ offset += off;
}
/* There wasn't an loclists_base, if the Dwarf does have a
.debug_loclists section, then it might be we need the
base after the first header. */
Elf_Data *data = cu->dbg->sectiondata[IDX_debug_loclists];
- if (offset == 0 && data != NULL)
+ if (offset == dwp_offset && data != NULL)
{
Dwarf *dbg = cu->dbg;
const unsigned char *readp = data->d_buf;
@@ -1354,8 +1368,8 @@ __libdw_cu_locs_base (Dwarf_CU *cu)
if (unit_length - 8 < needed)
goto no_header;
- offset = (Dwarf_Off) (offset_array_start
- - (unsigned char *) data->d_buf);
+ offset += (Dwarf_Off) (offset_array_start
+ - (unsigned char *) data->d_buf);
}
no_header:
@@ -126,4 +126,118 @@ die: no_subject (2e)
EOF
+# See testfile-dwp.source.
+testfiles testfile-dwp-5 testfile-dwp-5.dwp
+testfiles testfile-dwp-4 testfile-dwp-4.dwp
+
+testrun_compare ${abs_builddir}/all-dwarf-ranges testfile-dwp-5 << EOF
+die: foo.cc (11)
+ 401190..401200
+
+die: foo (2e)
+ 4011c0..401200
+
+die: x_x (1d)
+ 4011cb..4011eb
+ 4011f8..401200
+
+die: <unknown> (b)
+ 4011cb..4011eb
+ 4011f8..401200
+
+die: x_x (2e)
+ 401190..4011bd
+
+die: <unknown> (b)
+ 401190..401190
+ 401192..4011bb
+
+die: bar.cc (11)
+ 401200..40121b
+
+die: bar (2e)
+ 401200..40121b
+
+die: main.cc (11)
+ 401020..4010a0
+
+die: main (2e)
+ 401020..4010a0
+
+die: fibonacci (1d)
+ 401030..401032
+ 401036..401060
+ 401099..4010a0
+
+die: fibonacci (1d)
+ 40103a..401060
+ 401099..4010a0
+
+die: <unknown> (b)
+ 40103a..401060
+ 401099..4010a0
+
+die: <unknown> (b)
+ 40103a..401044
+ 401050..401060
+
+die: <unknown> (b)
+ 401050..401053
+ 401056..401059
+
+EOF
+
+testrun_compare ${abs_builddir}/all-dwarf-ranges testfile-dwp-4 << EOF
+die: foo.cc (11)
+ 401190..401200
+
+die: foo (2e)
+ 4011c0..401200
+
+die: x_x (1d)
+ 4011cb..4011eb
+ 4011f8..401200
+
+die: <unknown> (b)
+ 4011cb..4011eb
+ 4011f8..401200
+
+die: x_x (2e)
+ 401190..4011bd
+
+die: bar.cc (11)
+ 401200..40121b
+
+die: bar (2e)
+ 401200..40121b
+
+die: main.cc (11)
+ 401020..4010a0
+
+die: main (2e)
+ 401020..4010a0
+
+die: fibonacci (1d)
+ 401030..401032
+ 401036..401060
+ 401099..4010a0
+
+die: fibonacci (1d)
+ 40103a..401060
+ 401099..4010a0
+
+die: <unknown> (b)
+ 40103a..401060
+ 401099..4010a0
+
+die: <unknown> (b)
+ 40103a..401044
+ 401050..401060
+
+die: <unknown> (b)
+ 401050..401053
+ 401056..401059
+
+EOF
+
exit 0
@@ -707,4 +707,1416 @@ file /home/petr/proj/elfutils/master/elfutils/x.c
/file
EOF
+# See testfile-dwp.source.
+testfiles testfile-dwp-5 testfile-dwp-5.dwp
+testfiles testfile-dwp-4-strict testfile-dwp-4-strict.dwp
+
+# Not testfile-dwp-4 because it's unclear what to do about
+# https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99319.
+for file in testfile-dwp-5 testfile-dwp-4-strict; do
+ testrun_compare ${abs_builddir}/dwarf-getmacros "$file" '' '' << EOF
+CU foo.cc
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+linux 1
+__unix 1
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+unix 1
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+__DECIMAL_BID_FORMAT__ 1
+_GNU_SOURCE 1
+file /home/osandov/src/elfutils/tests/main.cc
+ file /usr/include/stdc-predef.h
+ _STDC_PREDEF_H 1
+ __STDC_IEC_559__ 1
+ __STDC_IEC_60559_BFP__ 201404L
+ __STDC_IEC_559_COMPLEX__ 1
+ __STDC_IEC_60559_COMPLEX__ 201404L
+ __STDC_ISO_10646__ 201706L
+ /file
+ file /home/osandov/src/elfutils/tests/foobar.h
+ FROB(x) ((x) ^ 0x2a2a2a2a)
+ FRY(x) ((x) * 0x100000001b3)
+ /file
+ MAIN_ARGS int argc, char **argv
+/file
+EOF
+done
+
exit 0
@@ -63,4 +63,22 @@ EOF
testrun_on_self_exe ${abs_builddir}/get-units-split
testrun_on_self_lib ${abs_builddir}/get-units-split
+# See testfile-dwp.source.
+testfiles testfile-dwp-5 testfile-dwp-5.dwp
+testfiles testfile-dwp-4 testfile-dwp-4.dwp
+testfiles testfile-dwp-4-strict testfile-dwp-4-strict.dwp
+
+for file in testfile-dwp-5 testfile-dwp-4 testfile-dwp-4-strict; do
+ testrun_compare ${abs_builddir}/get-units-split "$file" << EOF
+file: $file
+Got cudie unit_type: 4
+Found a skeleton unit, with split die: foo.cc
+Got cudie unit_type: 4
+Found a skeleton unit, with split die: bar.cc
+Got cudie unit_type: 4
+Found a skeleton unit, with split die: main.cc
+
+EOF
+done
+
exit 0
@@ -601,4 +601,116 @@ module 'testfile-splitdwarf4-not-split4.debug'
[4011a0,4011a1) {lit0, stack_value}
EOF
+# See testfile-dwp.source.
+testfiles testfile-dwp-5 testfile-dwp-5.dwp
+testfiles testfile-dwp-4 testfile-dwp-4.dwp
+
+testrun_compare ${abs_builddir}/varlocs -e testfile-dwp-5 << EOF
+module 'testfile-dwp-5'
+[84] CU 'foo.cc'@401190
+ [c6] function 'foo'@4011c0
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [e1] parameter 'this'
+ [4011c0,401200) {reg5}
+ [ea] variable 'x'
+ [4011c2,4011d4) {reg0}
+ [4011d4,4011d7) {reg1}
+ [4011d7,4011d9) {breg1(1), stack_value}
+ [4011f1,401200) {reg0}
+ [f9] inlined function 'x_x'@4011cb
+ [104] parameter 'x'
+ [4011cb,4011eb) {reg0}
+ [4011f1,401200) {reg0}
+ [14a] function 'x_x'@401190
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [15b] parameter 'x'
+ [401190,4011a1) {reg5}
+ [4011a1,4011bd) {reg0}
+module 'testfile-dwp-5'
+[1fa] CU 'bar.cc'@401200
+ [23c] function 'bar'@401200
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [253] parameter 'this'
+ [401200,40121b) {reg5}
+module 'testfile-dwp-5'
+[272] CU 'main.cc'@0
+ [2c7] function 'main'@401020
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [2e0] parameter 'argc'
+ [401020,401068) {reg5}
+ [401068,401080) {fbreg(-40)}
+ [401080,401084) {breg5(0)}
+ [401084,401099) {entry_value(1) {reg5}, stack_value}
+ [401099,4010a0) {reg5}
+ [2ec] parameter 'argv'
+ [401020,40104b) {reg4}
+ [40104b,401099) {entry_value(1) {reg4}, stack_value}
+ [401099,4010a0) {reg4}
+ [2f8] variable 'myfoo'
+ [401020,4010a0) {fbreg(-40)}
+ [303] variable 'mybar'
+ [401020,4010a0) {fbreg(-32)}
+ [30d] inlined function 'fibonacci'@401030
+ [31c] parameter 'n'
+ [401030,401060) {reg5}
+ [401099,4010a0) {reg5}
+ [326] inlined function 'fibonacci'
+ [32f] parameter 'n'
+ <no value>
+EOF
+
+testrun_compare ${abs_builddir}/varlocs -e testfile-dwp-4 << EOF
+module 'testfile-dwp-4'
+[b] CU 'foo.cc'@401190
+ [54] function 'foo'@4011c0
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [6f] parameter 'this'
+ [4011c0,401200) {reg5}
+ [78] variable 'x'
+ [4011c2,4011d4) {reg0}
+ [4011d4,4011d7) {reg1}
+ [4011d7,4011d9) {breg1(1), stack_value}
+ [4011f1,401200) {reg0}
+ [8a] inlined function 'x_x'@4011cb
+ [98] parameter 'x'
+ [4011cb,4011eb) {reg0}
+ [4011f1,401200) {reg0}
+ [e7] function 'x_x'@401190
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [f8] parameter 'x'
+ [401190,4011a1) {reg5}
+ [4011a1,4011bd) {reg0}
+module 'testfile-dwp-4'
+[129] CU 'bar.cc'@401200
+ [172] function 'bar'@401200
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [189] parameter 'this'
+ [401200,40121b) {reg5}
+module 'testfile-dwp-4'
+[19f] CU 'main.cc'@0
+ [1fd] function 'main'@401020
+ frame_base: {call_frame_cfa {bregx(7,8)}}
+ [216] parameter 'argc'
+ [401020,401068) {reg5}
+ [401068,401080) {fbreg(-40)}
+ [401080,401084) {breg5(0)}
+ [401084,401097) {GNU_entry_value(1) {reg5}, stack_value}
+ [401099,4010a0) {reg5}
+ [228] parameter 'argv'
+ [401020,40104b) {reg4}
+ [40104b,401099) {GNU_entry_value(1) {reg4}, stack_value}
+ [401099,4010a0) {reg4}
+ [23a] variable 'myfoo'
+ [401020,4010a0) {fbreg(-40)}
+ [247] variable 'mybar'
+ [401020,4010a0) {fbreg(-32)}
+ [253] inlined function 'fibonacci'@401030
+ [265] parameter 'n'
+ [401030,401060) {reg5}
+ [401099,4010a0) {reg5}
+ [272] inlined function 'fibonacci'
+ [27e] parameter 'n'
+ <no value>
+EOF
+
exit 0