The support for WinCE was removed with commit 84b300de36 ("gdbserver:
remove support for ARM/WinCE"). There is some leftover code for WinCE
support, guarded by the _WIN32_WCE macro, which I didn't know of at the
time.
I didn't remove the _WIN32_WCE references in the tests, because in
theory we still support the WinCE architecture in GDB (when debugging
remotely). So someone could run a test with that (although I'd be
really surprised).
gdb/ChangeLog:
* nat/windows-nat.c: Remove all code guarded by _WIN32_WCE.
* nat/windows-nat.h: Likewise.
gdbserver/ChangeLog:
* win32-low.cc: Remove all code guarded by _WIN32_WCE.
* win32-low.h: Likewise.
Change-Id: I7a871b897e2135dc195b10690bff2a01d9fac05a
In gdb.btrace/reconnect.exp, we test that we can disconnect and reconnect
again to a GDB session that is recording with the btrace recording format.
It does not really matter what we are recording.
The test assumed that stepping from _start will bring us into an area
without debug information. This is not correct on all systems.
Relax the expected output to also support systems where we do have debug
information for that code.
This patch makes handling a DLL load at run time (using LoadLibrary)
much more reliable when its file name cannot be obtained using the
lpImageName pointer provided by the DLL load debug event. The
solution is to enumerate all the DLLs loaded by the inferior, looking
for the DLL that's loaded at base address provided by the lpBaseOfDll
pointer of the debug event. Correctly resolving the DLL file name is
important, because without that GDB doesn't record the DLL in the list
of solibs, and then later is unable to show functions in that DLL in
the backtraces, which produces corrupted and truncated backtraces.
See this thread for the problems that causes:
https://sourceware.org/pipermail/gdb-patches/2021-March/177022.html
gdb/ChangeLog:
2021-04-10 Eli Zaretskii <eliz@gnu.org>
* windows-nat.c (windows_nat::handle_load_dll): Call
windows_add_dll if get_image_name failed to glean the name of the
DLL by using the lpImageName pointer.
(windows_add_all_dlls): Now a thin wrapper around windows_add_dll.
(windows_add_dll): Now does what windows_add_all_dlls did before,
but also accepts an argument LOAD_ADDR, which, if non-NULL,
specifies the address where the DLL was loaded into the inferior,
and looks for the single DLL loaded at that address.
Similarly to commit 665af52ec2, fix a build
failure seen with an updated glibc, due to the enum/constant mismatch.
The old include file order eventually makes asm/ptrace.h get included before
sys/ptrace.h.
This patch fixes it. Seems fairly obvious and I'll push it shortly.
gdb/ChangeLog:
2021-04-09 Luis Machado <luis.machado@linaro.org>
* nat/aarch64-mte-linux-ptrace.c: Update include file order.
The next-gen Intel Fortran compiler isn't flang-based, but emits
prologue_end in the same manner. As do the newer Intel C/C++ compilers.
This allows prologue detection based on dwarf for all newer Intel compilers.
The cut-off version was not chosen for any specific reason other than the
effort to test this.
gdb/Changelog:
2021-04-08 Felix Willgerodt <felix.willgerodt@intel.com>
* i386-tdep.c (i386_skip_prologue): Use symbol table to find the
prologue end for Intel compilers.
* amd64-tdep.c (amd64_skip_prologue): Likewise.
* producer.c (producer_is_icc_ge_19): New function.
* producer.h (producer_is_icc_ge_19): New declaration.
The main goal of this patch is to get rid of a warning for the new Fortran
compiler:
(gdb) b 9
warning: Could not recognize version of Intel Compiler in: "Intel(R) Fortran 21.0-2087b"
Breakpoint 1 at 0x4048cf: file comp.f90, line 9.
While trying to fix this I analyzed DW_AT_producer of all latest Intel
compilers for C, C++ and Fortran. They do no longer necessarily start with
"Intel (R)" nor do they follow the internal and external version number
scheme that the original patch for this check assumed. Some newer compilers
even contradict the "intermediate" digit in the old version scheme and have
the MINOR number as the second digit, even when having 3 or 4 digits overall.
Therefore I rewrote the check to consider the first MAJOR.MINOR string found
as the version number. This might not be 100% correct for some older
internal compilers, but the only current user of this function is only
checking for the major version anyway. Hence this should be reliable enough
and extendable enough going forward.
gdb/ChangeLog:
2021-04-08 Felix Willgerodt <felix.willgerodt@intel.com>
* producer.c: (producer_is_icc): Update for new version scheme.
(producer_parsing_tests): Update names and expected results.
* producer.h: (producer_is_icc): Update comment accordingly.
Added function fetch_tid_type which calls get_tid_type and will set up
the type, associated with a tid, if it is not read in yet. Also implement
function read_forward_type which handles the CTF_K_FORWARD kind.
Expanded gdb.base/ctf-ptype.exp to add cases with forward references.
gdb/ChangeLog:
* ctfread.c (fetch_tid_type): New function, use throughout file.
(read_forward_type): New function.
(read_type_record): Call read_forward_type.
gdb/testsuite/ChangeLog:
* gdb.base/ctf-ptype.c: Add struct link containing a forward
reference type.
* gdb.base/ctf-ptype.exp: Add "ptype struct link".
This commit replaces this patch:
https://sourceware.org/pipermail/gdb-patches/2021-January/174933.html
which was itself a replacement for this patch:
https://sourceware.org/pipermail/gdb-patches/2020-July/170335.html
The motivation behind the original patch can be seen in the new test,
which currently gives a GDB session like this:
(gdb) ptype var8
type = Type type6
PTR TO -> ( Type type2 :: ptr_1 )
PTR TO -> ( Type type2 :: ptr_2 )
End Type type6
(gdb) ptype var8%ptr_2
type = PTR TO -> ( Type type2
integer(kind=4) :: spacer
Type type1, allocatable :: t2_array(:) <------ Issue #1
End Type type2 )
(gdb) ptype var8%ptr_2%t2_array
Cannot access memory at address 0x38 <------ Issue #2
(gdb)
Issue #1: Here we see the abstract dynamic type, rather than the
resolved concrete type. Though in some cases the user might be
interested in the abstract dynamic type, I think that in most cases
showing the resolved concrete type will be of more use. Plus, the
user can always figure out the dynamic type (by source code inspection
if nothing else) given the concrete type, but it is much harder to
figure out the concrete type given only the dynamic type.
Issue #2: In this example, GDB evaluates the expression in
EVAL_AVOID_SIDE_EFFECTS mode (due to ptype). The value returned for
var8%ptr_2 will be a non-lazy, zero value of the correct dynamic
type. However, when GDB asks about the type of t2_array this requires
GDB to access the value of var8%ptr_2 in order to read the dynamic
properties. As this value was forced to zero (thanks to the use of
EVAL_AVOID_SIDE_EFFECTS) then GDB ends up accessing memory at a base
of zero plus some offset.
Both this patch, and my previous two attempts, have all tried to
resolve this problem by stopping EVAL_AVOID_SIDE_EFFECTS replacing the
result value with a zero value in some cases.
This new patch is influenced by how Ada handles its tagged typed.
There are plenty of examples in ada-lang.c, but one specific case is
ada_structop_operation::evaluate. When GDB spots that we are dealing
with a tagged (dynamic) type, and we're in EVAL_AVOID_SIDE_EFFECTS
mode, then GDB re-evaluates the child operation in EVAL_NORMAL mode.
This commit handles two cases like this specifically for Fortran, a
new fortran_structop_operation, and the already existing
fortran_undetermined, which is where we handle array accesses.
In these two locations we spot when we are dealing with a dynamic type
and re-evaluate the child operation in EVAL_NORMAL mode so that we
are able to access the dynamic properties of the type.
The rest of this commit message is my attempt to record why my
previous patches failed.
To understand my second patch, and why it failed lets consider two
expressions, this Fortran expression:
(gdb) ptype var8%ptr_2%t2_array --<A>
Operation: STRUCTOP_STRUCT --(1)
Operation: STRUCTOP_STRUCT --(2)
Operation: OP_VAR_VALUE --(3)
Symbol: var8
Block: 0x3980ac0
String: ptr_2
String: t2_array
And this C expression:
(gdb) ptype ptr && ptr->a == 3 --<B>
Operation: BINOP_LOGICAL_AND --(4)
Operation: OP_VAR_VALUE --(5)
Symbol: ptr
Block: 0x45a2a00
Operation: BINOP_EQUAL --(6)
Operation: STRUCTOP_PTR --(7)
Operation: OP_VAR_VALUE --(8)
Symbol: ptr
Block: 0x45a2a00
String: a
Operation: OP_LONG --(9)
Type: int
Constant: 0x0000000000000003
In expression <A> we should assume that t2_array is of dynamic type.
Nothing has dynamic type in expression <B>.
This is how GDB currently handles expression <A>, in all cases,
EVAL_AVOID_SIDE_EFFECTS or EVAL_NORMAL, an OP_VAR_VALUE operation
always returns the real value of the symbol, this is not forced to a
zero value even in EVAL_AVOID_SIDE_EFFECTS mode. This means that (3),
(5), and (8) will always return a real lazy value for the symbol.
However a STRUCTOP_STRUCT will always replace its result with a
non-lazy, zero value with the same type as its result. So (2) will
lookup the field ptr_2 and create a zero value with that type. In
this case the type is a pointer to a dynamic type.
Then, when we evaluate (1) to figure out the resolved type of
t2_array, we need to read the types dynamic properties. These
properties are stored in memory relative to the objects base address,
and the base address is in var8%ptr_2, which we already figured out
has the value zero. GDB then evaluates the DWARF expressions that
take the base address, add an offset and dereference. GDB then ends
up trying to access addresses like 0x16, 0x8, etc.
To fix this, I proposed changing STRUCTOP_STRUCT so that instead of
returning a zero value we instead returned the actual value
representing the structure's field in the target. My thinking was
that GDB would not try to access the value's contents unless it needed
it to resolve a dynamic type. This belief was incorrect.
Consider expression <B>. We already know that (5) and (8) will return
real values for the symbols being referenced. The BINOP_LOGICAL_AND,
operation (4) will evaluate both of its children in
EVAL_AVOID_SIDE_EFFECTS in order to get the types, this is required
for C++ operator lookup. This means that even if the value of (5)
would result in the BINOP_LOGICAL_AND returning false (say, ptr is
NULL), we still evaluate (6) in EVAL_AVOID_SIDE_EFFECTS mode.
Operation (6) will evaluate both children in EVAL_AVOID_SIDE_EFFECTS
mode, operation (9) is easy, it just returns a value with the constant
packed into it, but (7) is where the problem lies. Currently in GDB
this STRUCTOP_STRUCT will always return a non-lazy zero value of the
correct type.
When the results of (7) and (9) are back in the BINOP_LOGICAL_AND
operation (6), the two values are passed to value_equal which performs
the comparison and returns a result. Note, the two things compared
here are the immediate value (9), and a non-lazy zero value from (7).
However, with my proposed patch operation (7) no longer returns a zero
value, instead it returns a lazy value representing the actual value
in target memory. When we call value_equal in (6) this code causes
GDB to try and fetch the actual value from target memory. If `ptr` is
NULL then this will cause GDB to access some invalid address at an
offset from zero, this will most likely fail, and cause GDB to throw
an error instead of returning the expected type.
And so, we can now describe the problem that we're facing. The way
GDB's expression evaluator is currently written we assume, when in
EVAL_AVOID_SIDE_EFFECTS mode, that any value returned from a child
operation can safely have its content read without throwing an
error. If child operations start returning real values (instead of
the fake zero values), then this is simply not true.
If we wanted to work around this then we would need to rewrite almost
all operations (I would guess) so that EVAL_AVOID_SIDE_EFFECTS mode
does not cause evaluation of an operation to try and read the value of
a child operation. As an example, consider this current GDB code from
eval.c:
struct value *
eval_op_equal (struct type *expect_type, struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2)
{
if (binop_user_defined_p (op, arg1, arg2))
{
return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2);
int tem = value_equal (arg1, arg2);
struct type *type = language_bool_type (exp->language_defn,
exp->gdbarch);
return value_from_longest (type, (LONGEST) tem);
}
}
We could change this function to be this:
struct value *
eval_op_equal (struct type *expect_type, struct expression *exp,
enum noside noside, enum exp_opcode op,
struct value *arg1, struct value *arg2)
{
if (binop_user_defined_p (op, arg1, arg2))
{
return value_x_binop (arg1, arg2, op, OP_NULL, noside);
}
else
{
struct type *type = language_bool_type (exp->language_defn,
exp->gdbarch);
if (noside == EVAL_AVOID_SIDE_EFFECTS)
return value_zero (type, VALUE_LVAL (arg1));
else
{
binop_promote (exp->language_defn, exp->gdbarch, &arg1, &arg2);
int tem = value_equal (arg1, arg2);
return value_from_longest (type, (LONGEST) tem);
}
}
}
Now we don't call value_equal unless we really need to. However, we
would need to make the same, or similar change to almost all
operations, which would be a big task, and might not be a direction we
wanted to take GDB in.
So, for now, I'm proposing we go with the more targeted, Fortran
specific solution, that does the minimal required in order to
correctly resolve the dynamic types.
gdb/ChangeLog:
* f-exp.h (class fortran_structop_operation): New class.
* f-exp.y (exp): Create fortran_structop_operation instead of the
generic structop_operation.
* f-lang.c (fortran_undetermined::evaluate): Re-evaluate
expression as EVAL_NORMAL if the result type was dynamic so we can
extract the actual array bounds.
(fortran_structop_operation::evaluate): New function.
gdb/testsuite/ChangeLog:
* gdb.fortran/dynamic-ptype-whatis.exp: New file.
* gdb.fortran/dynamic-ptype-whatis.f90: New file.
It is not currently possible to cast some values to an rvaule
reference. This happens when simple scalar values are cast to an
rvalue reference of the same type, e.g.:
int global_var;
Then in GDB:
(gdb) p static_cast<int&&> (global_var)
Attempt to take address of value not located in memory.
Which is clearly silly.
The problem is that as part of the cast an intermediate value is
created within GDB that becomes an lval_none rather than the original
lval_memory. The casting logic basically goes like this:
The call tree that leads to the error looks like this:
value_cast
value_cast
value_ref
value_addr
error
The first value_cast call is casting the value for 'global_var' to
type 'int&&'. GDB spots that the target type is a reference, and so
calls value_cast again, this time casting 'global_var' to type 'int'.
We then call value_ref to convert the result of the second value_cast
into a reference.
Unfortunately, the second cast results in the value (for global_var)
changing from an lval_memory to an lval_none. This is because int to
int casting calls extract_unsigned_integer and then
value_from_longest.
In theory value_cast has a check at its head that should help in this
case, the code is:
if (value_type (arg2) == type)
return arg2;
However, this only works in some cases. In our case
'value_type (arg2)' will be an objfile owned type, while the type from
the expression parser 'int&&' will be gdbarch owned. The pointers
will not be equal, but the meaning of the type will be equal.
I did consider making the int to int casting case smarter, but this
obviously is only one example. We must also consider things like
float to float, or pointer to pointer....
So, I instead decided to try and make the initial check smarter.
Instead of a straight pointer comparison, I now propose that we use
types_deeply_equal. If this is true then we are casting something
back to its current type, in which case we can preserve the lval
setting by using value_copy.
gdb/ChangeLog:
* valops.c (value_cast): Call value_deeply_equal before performing
any cast.
gdb/testsuite/ChangeLog:
* gdb.cp/rvalue-ref-params.cc (f3): New function.
(f4): New function.
(global_int): New global variable.
(global_float): Likeiwse.
(main): Call both new functions.
* gdb.cp/rvalue-ref-params.exp: Add new tests.
I noticed that in types equal we start with a cheap pointer equality
check, then resolve typedefs, then do a series of (semi-)expensive
checks, including checking type names, before, finally performing
another pointer equality check.
We should hoist the second pointer equality check to immediately after
we have resolved typedefs. This would save performing the more
expensive checks.
This isn't going to give any noticable performance improvement, I just
spotted this in passing and figured I might as well commit the fix.
There should be no user visible changes after this commit.
gdb/ChangeLog:
* gdbtypes.c (types_equal): Move pointer equality check earlier in
the function.
DWARF allows .dwo file paths to be relative rather than absolute.
When they are relative, DWARF uses DW_AT_comp_dir to find the .dwo
file. DW_AT_comp_dir can also be relative, making the entire search
patch for the .dwo file relative.
In this case, GDB currently searches relative to its current working
directory, i.e. the directory from which the debugger was launched,
but not relative to the directory containing the built binary. This
cannot be right, as the compiler, when generating the relative paths,
knows where it's building the binary but can have no idea where the
debugger will be launched.
The correct thing is to add the directory containing the binary to the
search paths used for resolving relative locations of dwo files. That
is what this patch does.
gdb/ChangeLog:
* dwarf2/read.c (try_open_dwop_file): Add path for the binary to
the search paths used resolve relative location of .dwo file.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/fission-relative-dwo.c: New file.
* gdb.dwarf2/fission-relative-dwo.exp: New file.
This commit fixes fission support in the Dwarf assembler. I added the
new test gdb.dwarf2/fission-absolute-dwo.exp which is a simple example
of using the fission support. I also rewrote the existing test
gdb.dwarf2/fission-multi-cu.exp to use the new functionality (instead
of using an x86-64 only assembler file).
To better support compiling the assembler files produced by the Dwarf
assembler I have added the new proc build_executable_and_dwo_files in
lib/dwarf.exp, this replaces build_executable_from_fission_assembler,
all the tests that used the old proc have been updated. Where the old
proc assumed a single .S source file which contained the entire test,
the new proc allows for multiple source files.
The Dwarf assembler already had some fission support, however, this
was not actually used in any tests, and when I tried using it there
were a few issues.
The biggest change is that we now generate DW_FORM_GNU_addr_index
instead of DW_FORM_addr for the low and high pc in
_handle_macro_at_range, support for the DW_FORM_GNU_addr_index is new
in this commit.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/fission-absolute-dwo.c: New file.
* gdb.dwarf2/fission-absolute-dwo.exp: New file.
* gdb.dwarf2/fission-base.exp: Use build_executable_and_dwo_files
instead of build_executable_from_fission_assembler.
* gdb.dwarf2/fission-loclists-pie.exp: Likewise.
* gdb.dwarf2/fission-loclists.exp: Likewise.
While messing with the Dwarf assembler (gdb/testsuite/lib/dwarf.exp) I
managed to create an ELF which made use of DW_FORM_strp, but didn't
include a .debug_str section.
When I started GDB on this ELF, GDB crashed. I would have expected to
get an error instead.
I tracked this down to an unfortunate design choice in
dwarf2_section_info, a class which wraps around a bfd section, and is
used for reading in debug information. GBB creates many
dwarf2_section_info objects, one for each debug section that might
need to be read, then as we find the input bfd sections we associate
them with the corresponding dwarf2_section_info.
If no matching input bfd section is found then the dwarf2_section_info
is left in an unassociated state, its internal bfd section pointer is
null.
If later GDB tries to read content from the dwarf2_section_info, for
example, which trying to read the string associated with DW_FORM_strp,
we spot that there is no associated bfd section and issue an error
message.
To make the users life easier, the error message includes the section
name being looked for, and the bfd from which the section was
obtained.
However, we get the section name by calling bfd_section_name on the
associated section, and we get the bfd filename by calling
bfd_get_filename on the owner of the associated section.
Of course, if there is no associated section then both the calls
bfd_section_name and dwarf2_section_info::get_bfd_owner will result in
undefined behaviour (e.g. a crash).
The solution I propose in this patch is, I know, not ideal. I simply
spot the case where there is no associated section, and print a
simpler error message, leaving out the section name and filename.
A better solution would involve redesigning dwarf2_section_info, we
could associate each dwarf2_section_info with the initial bfd being
parsed. We would then display this filename if there's nothing better
to display (e.g. if we find a section in a dwo/dwp split dwarf file
then we would probably use that filename in preference).
Each dwarf2_section_info could also have the concept of the default
section name that would be read for that section, for example, string
data might appear in ".debug_str" or ".zdebug_str", but if neither is
found, then it would probably be OK to just say ".debug_str" is
missing.
Anyway, I didn't do any of that redesign, I just wanted to stop GDB
crashing for now, so instead we get this:
Dwarf Error: DW_FORM_strp used without required section
Which isn't the best, but in context, isn't too bad:
Reading symbols from /path/to/executable...
Dwarf Error: DW_FORM_strp used without required section
(No debugging symbols found in /path/to/executable)
I also added some asserts into dwarf2_section_info which should
trigger before GDB crashes in future, if we trigger any other bad
paths through this code.
And there's a test for the specific issue I hit.
gdb/ChangeLog:
* dwarf2/section.c (dwarf2_section_info::get_bfd_owner): Add an
assert.
(dwarf2_section_info::get_file_name): Add an assert.
(dwarf2_section_info::read_string): Display a minimal, sane error
when the dwarf2_section_info is not associated with a bfd section.
gdb/testsuite/ChangeLog:
* gdb.dwarf2/dw2-using-debug-str.exp: Add an additional test.
It was reported on IRC that using gdb.parameter('data-directory')
doesn't work correctly.
The problem is that the data directory is stored in 'gdb_datadir',
however the set/show command is associated with a temporary
'staged_gdb_datadir'.
When the user does 'set data-directory VALUE', the VALUE is stored in
'staged_gdb_datadir' by GDB, then set_gdb_datadir is called. This in
turn calls set_gdb_data_directory to copy the value from
staged_gdb_datadir into gdb_datadir.
However, set_gdb_data_directory will resolve relative paths, so the
value stored in gdb_datadir might not match the value in
staged_gdb_datadir.
The Python gdb.parameter API fetches the parameter values by accessing
the variable associated with the show command, so in this case
staged_gdb_datadir. This causes two problems:
1. Initially staged_gdb_datadir is NULL, and remains as such until the
user does 'set data-directory VALUE' (which might never happen), but
gdb_datadir starts with GDB's default data-directory value. So
initially from Python gdb.parameter('data-directory') will return the
empty string, even though at GDB's CLI 'show data-directory' prints a
real path.
2. If the user does 'set data-directory ./some/relative/path', GDB
will resolve the relative path, thus, 'show data-directory' at the CLI
will print an absolute path. However, the value is staged_gdb_datadir
will still be the relative path, and gdb.parameter('data-directory')
from Python will return the relative path.
In this commit I fix both of these issues by:
1. Initialising the value in staged_gdb_datadir based on the initial
value in gdb_datadir, and
2. In set_gdb_datadir, after calling set_gdb_data_directory, I copy
the value in gdb_datadir back into staged_gdb_datadir.
With these two changes in place the value in staged_gdb_datadir should
always match the value in gdb_datadir, and accessing data-directory
from Python should now work correctly.
gdb/ChangeLog:
* top.c (staged_gdb_datadir): Update comment.
(set_gdb_datadir): Copy the value of gdb_datadir back into
staged_datadir.
(init_main): Initialise staged_gdb_datadir.
gdb/testsuite/ChangeLog:
* gdb.python/py-parameter.exp: Add test for reading data-directory
using gdb.parameter API.
When running test-case gdb.opt/inline-cmds.exp, we run into this KFAIL with
gcc:
...
Breakpoint 7, main () at gdb.opt/inline-cmds.c:71^M
71 result = 0; /* set breakpoint 3 here */^M
(gdb) PASS: gdb.opt/inline-cmds.exp: continue to breakpoint: consecutive func1
next^M
73 func1 (); /* first call */^M
(gdb) PASS: gdb.opt/inline-cmds.exp: next to first func1
next^M
75 marker ();^M
(gdb) KFAIL: gdb.opt/inline-cmds.exp: next to second func1 (PRMS: gdb/25884)
...
while with clang we have instead:
...
next^M
74 func1 (); /* second call */^M
(gdb) PASS: gdb.opt/inline-cmds.exp: next to second func1
...
The relevant bit of the test source is here in inline-cmds.c:
...
71 result = 0; /* set breakpoint 3 here */
72
73 func1 (); /* first call */
74 func1 (); /* second call */
75 marker ();
...
with func1 defined as:
...
33 inline __attribute__((always_inline)) int func1(void)
34 {
35 bar ();
36 return x * y;
37 }
...
The corresponding insns are:
...
40050b: movl $0x0,0x200b1f(%rip) # 601034 <result>
400515: callq 40057b <bar>
40051a: callq 40057b <bar>
40051f: callq 400596 <marker>
...
and the line number info is:
...
Line number Starting address View Stmt
71 0x40050b x
35 0x400515 x
75 0x40051f x
...
The line number info is missing an entry for the insn at 40051a, and that is
causing the FAIL. This is a gcc issue, filed as PR gcc/98780 -" Missing line
table entry for inlined stmt at -g -O0".
[ For contrast, with clang we have an extra entry:
...
Line number Starting address View Stmt
71 0x40050b x
35 0x400515 x
35 0x40051a
75 0x40051f x
...
though it appears to be missing the start-of-statement marker. ]
However, there is debug info that indicates that the insn at 40051a is not
part of the line table entry for the insn at 400515:
...
<2><1c4>: Abbrev Number: 8 (DW_TAG_inlined_subroutine)
<1c5> DW_AT_abstract_origin: <0x2a2>
<1c9> DW_AT_low_pc : 0x400515
<1d1> DW_AT_high_pc : 0x5
<1d9> DW_AT_call_file : 1
<1da> DW_AT_call_line : 73
<2><1db>: Abbrev Number: 8 (DW_TAG_inlined_subroutine)
<1dc> DW_AT_abstract_origin: <0x2a2>
<1e0> DW_AT_low_pc : 0x40051a
<1e8> DW_AT_high_pc : 0x5
<1f0> DW_AT_call_file : 1
<1f1> DW_AT_call_line : 74
...
and indeed lldb manages to "next" from line 73 to line 74.
Work around the missing line table entry, by using the inline frame info to
narrow the stepping range in prepare_one_step.
Tested on x86_64-linux.
gdb/ChangeLog:
2021-04-06 Tom de Vries <tdevries@suse.de>
PR breakpoints/25884
* infcmd.c (prepare_one_step): Using inline frame info to narrow
stepping range.
gdb/testsuite/ChangeLog:
2021-04-06 Tom de Vries <tdevries@suse.de>
PR breakpoints/25884
* gdb.opt/inline-cmds.exp: Remove kfail.
On openSUSE Tumbleweed I run into:
...
FAIL: gdb.tui/basic.exp: asm window shows main
ERROR: invalid command name "_csi_L"
...
Using a minimal example, we get:
...
$ gdb -q outputs/gdb.tui/basic/basic -ex "tui enable" -ex "layout asm"
<TUI output>
src/gdb/ui-style.c:243: internal-error: bool \
ui_file_style::parse(const char*, size_t*): Assertion `match == 0' failed.
...
The problem is in len_without_escapes, where we detect the start of an escape
sequence, but then pass ptr to style.parse while ptr no longer points to the
escape due to the ptr++ in the while condition:
...
while ((c = *ptr++) != '\0')
{
if (c == '\033')
{
ui_file_style style;
size_t n_read;
if (style.parse (ptr, &n_read))
...
Fix this by removing the ++ in the while condition, and adding ptr++ in the
loop body where appropriate.
Tested on x86_64-linux.
gdb/ChangeLog:
2021-04-06 Tom de Vries <tdevries@suse.de>
PR tui/27680
* tui/tui-disasm.c (len_without_escapes): Pass ptr pointing at escape
to style.parse.
When running test-case gdb.threads/gcore-thread.exp on openSUSE Tumbleweed,
I run into these XFAILs:
...
XFAIL: gdb.threads/gcore-thread.exp: clear __stack_user.next
XFAIL: gdb.threads/gcore-thread.exp: clear stack_used.next
...
Apart from the xfail, the test-case also sets core0file to "":
...
-re "No symbol \"${symbol}\" in current context\\.\r\n$gdb_prompt $" {
xfail $test
# Do not do the verification.
set core0file ""
}
...
After which we run into this FAIL, because gdb_core_cmd fails to load a
core file called "":
...
(gdb) core ^M
No core file now.^M
(gdb) FAIL: gdb.threads/gcore-thread.exp: core0file: \
re-load generated corefile
...
Fix this FAIL by skipping gdb_core_cmd if the core file is "".
Tested on x86_64-linux.
gdb/testsuite/ChangeLog:
2021-04-06 Tom de Vries <tdevries@suse.de>
PR testsuite/27691
* gdb.threads/gcore-thread.exp: Don't call gdb_core_cmd with core
file "".
When trying to do pretty much anything that requires unwinding a frame
on AVR, we get
/home/simark/src/wt/avr/gdb/trad-frame.h:143: internal-error: LONGEST trad_frame_saved_reg::addr() const: Assertion `m_kind == trad_frame_saved_reg_kind::ADDR' failed.
This is likely coming from the trad-frame refactor in 098caef485
("Refactor struct trad_frame_saved_regs"). Here's an example of how to
reproduce it:
In one terminal:
$ cat test.c
int foo(int x)
{
return x * 7;
}
int main() {
return foo(2);
}
$ avr-gcc -gdwarf-4 -mmcu=atmega2560 test.c
$ /tmp/simavr/bin/simavr --mcu atmega2560 -g a.out
Loaded 330 .text at address 0x0
Loaded 0 .data
And in another one:
$ ./gdb -q -nx --data-directory=data-directory a.out -ex "tar rem :1234" -ex "b foo" -ex c -ex bt
Reading symbols from a.out...
Remote debugging using :1234
0x00000000 in __vectors ()
Breakpoint 1 at 0x110: file test.c, line 3.
Note: automatically using hardware breakpoints for read-only addresses.
Continuing.
Breakpoint 1, foo (x=2) at test.c:3
3 return x * 7;
#0 foo (x=2) at test.c:3
/home/simark/src/wt/avr/gdb/trad-frame.h:143: internal-error: LONGEST trad_frame_saved_reg::addr() const: Assertion `m_kind == trad_frame_saved_reg_kind::ADDR' failed.
What the AVR code does is:
1. In avr_scan_prologue, in the block that says "First stage of the
prologue scanning.", look for "push rX" instructions and note that rX
is saved on the stack. But instead of putting the actual stack
address directly, it puts an offset (from the previous frame's sp).
2. Back in avr_frame_unwind_cache, in the block that says "Adjust all
the saved registers", adjust all these values to be real stack
addresses.
To check whether a register was assigned an address (and therefore if it
needs adjustment), the code does:
if (info->saved_regs[i].addr () > 0)
Since commit 098caef485, it's invalid to call the `addr` getter of
trad_frame_saved_reg if the register hasn't been assigned an address.
Instead, the code could use the `is_addr` getter to verify if the
register has been assigned an address. This is what this patch does.
gdb/ChangeLog:
* avr-tdep.c (avr_frame_unwind_cache): Use
trad_frame_saved_reg::is_addr.
Change-Id: I5803089160b829400178746c5e3bca0c1cd11c00
I noticed it was unused. I think that makes sense, as it shows that
objfile_per_bfd_storage is not specific to one objfile (it can be shared
by multiple objfiles that have the same bfd).
There is one thing I wonder though, maybe I'm missing something. If
the BFD doesn't require relocation, get_objfile_bfd_data stores the
newly allocated object in objfiles_bfd_data, so we can assume that
objfiles_bfd_data is the owner of the object. When the bfd's refcount
drops to 0, the corresponding objfile_per_bfd_storage object in
objfiles_bfd_data is deleted.
But if the BFD requires relocation, get_objfile_bfd_data returns a newly
allocated object that isn't kept anywhere else (and isn't shared). So
the objfile becomes the owner of the objfile_per_bfd_storage object. In
objfile::~objfile, we have this:
if (obfd)
gdb_bfd_unref (obfd);
else
delete per_bfd;
I'm thinking that obfd could be non-nullptr, and it could require
relocation. In that case, it would never be freed. Anyway, that's not
really connected to this patch.
gdb/ChangeLog:
* objfiles.c (get_objfile_bfd_data): Remove objfile parameter,
adjust callers.
Change-Id: Ifa3158074ea6b42686780ba09d0c964b0cf14cf1
Since partial_symtab is supposed to be objfile-independent (since series
[1]), I think it would make sense for partial_symtab to not take an
objfile as a parameter in its constructor.
This patch replaces that parameter with an objfile_per_bfd_storage
parameter.
The objfile is used for two things:
- to get the objfile_name, for debug messages. We can get that name
from the bfd instead.
- to intern the partial symtab filename. Even though it goes through
an objfile method, the request is actually forwarded to the
underlying objfile_per_bfd_storage. So we can ask the new
objfile_per_bfd_storage instead.
In order to get a reference to the BFD from the objfile_per_bfd_storage,
the BFD is saved in the objfile_per_bfd_storage object.
[1] https://sourceware.org/pipermail/gdb-patches/2021-February/176625.html
gdb/ChangeLog:
* psympriv.h (struct partial_symtab) <partial_symtab>: Change
objfile parameter for objfile_per_bfd_storage, adjust callers.
(struct standard_psymtab) <standard_psymtab>: Likewise.
(struct legacy_psymtab) <legacy_psymtab>: Likewise.
* psymtab.c (partial_symtab::partial_symtab): Likewise.
* ctfread.c (struct ctf_psymtab): Likewise.
* dwarf2/read.h (struct dwarf2_psymtab): Likewise.
* dwarf2/read.c (struct dwarf2_include_psymtab): Likewise.
(dwarf2_create_include_psymtab): Likewise.
* objfiles.h (struct objfile_per_bfd_storage)
<objfile_per_bfd_storage>: Add bfd parameter, adjust callers.
<get_bfd>: New method.
<m_bfd>: New field.
* objfiles.c (get_objfile_bfd_data): Adjust.
Change-Id: I2ed3ab5d2e6f27d034bd4dc26ae2fae7b0b8a2b9
This simplifies the code a bit.
gdb/ChangeLog:
* psymtab.c (partial_symtab::partial_symtab): Change
last_objfile_name to be an std::string.
* symfile.c (allocate_symtab): Likewise.
Change-Id: I3dfe217233ed9346c2abc04a9b1be0df69a90af8
This allows keeping the objfile_per_bfd_storage implementation details
into objfile_per_bfd_storage, instead of into objfile. And this makes
the intern methods usable for code that only has an
objfile_per_bfd_storage to work with.
gdb/ChangeLog:
* objfiles.h (struct objfile_per_bfd_storage) <intern>: New
methods.
(struct objfile) <intern>: Use
objfile::objfile_per_bfd_storage::intern.
Change-Id: Ifd54026c5efaeffafac9b84ff84c199acc7ce78a
Add the `is_flag_enum` and `set_is_flag_enum` methods on `struct type`,
in order to remove the `TYPE_FLAG_ENUM` macro. In this patch, the macro
is changed to use the getter, so all the call sites of the macro that
are used as a setter are changed to use the setter method directly. The
next patch will remove the macro completely.
gdb/ChangeLog:
* gdbtypes.h (struct type) <is_flag_enum,
set_is_flag_enum>: New methods.
(TYPE_FLAG_ENUM): Use type::is_flag_enum, change all
write call sites to use type::set_is_flag_enum.
Change-Id: I9c56c91626c8d784947ba94fcb97818526b81d1c
Add the `is_declared_class` and `set_is_declared_class` methods on
`struct type`, in order to remove the `TYPE_DECLARED_CLASS` macro. In
this patch, the macro is changed to use the getter, so all the call
sites of the macro that are used as a setter are changed to use the
setter method directly. The next patch will remove the macro
completely.
gdb/ChangeLog:
* gdbtypes.h (struct type) <is_declared_class,
set_is_declared_class>: New methods.
(TYPE_DECLARED_CLASS): Use type::is_declared_class, change all
write call sites to use type::set_is_declared_class.
Change-Id: Idf08d32e137c885a0aba0a18f556a899c1cbfd68
Python 3.4 has deprecated the imp module in favour of importlib. This
patch avoids the DeprecationWarning. This warning is visible to users
whose libpython.so has been compiled with --with-pydebug.
Considering that even python 3.5 has reached end of life, would it be
better to just use importlib and drop support for python 3.0 to 3.3?
2021-02-28 Boris Staletic <boris.staletic@gmail.com>
* gdb/python/lib/gdb/__init__.py: Use importlib on python 3.4+
to avoid deprecation warnings.
In commit cfcbd506fb "[gdb/testsuite] Ignore DEBUGINFOD_URLS" I added
unsetting of env(DEBUGINFOD_URLS), but it doesn't work because I forgot to
add :: in front.
Fix this, and rewrite using "unset -nocomplain" instead of unsetenv, which
allows us to drop the "info exists" test.
2021-04-01 Tom de Vries <tdevries@suse.de>
* lib/gdb.exp (default_gdb_init): Use ::env. Use unset
-nocomplain ::env(V) instead of unsetenv V.
This removes dw2_map_matching_symbols and dw2_expand_symtabs_matching,
merging them with their sole trivial callers.
gdb/ChangeLog
2021-03-31 Tom Tromey <tom@tromey.com>
* dwarf2/read.c (dwarf2_gdb_index::map_matching_symbols): Merge
with dw2_map_matching_symbols.
(dwarf2_gdb_index::expand_symtabs_matching): Merge with
dw2_expand_symtabs_matching.
Pedro pointed out a typo in a comment in dwarf2/stringify.h. This
fixes it.
gdb/ChangeLog
2021-03-31 Tom Tromey <tromey@adacore.com>
* dwarf2/stringify.h: Fix typo.
I had written a DWARF location expression like
DW_OP_const1u
DW_OP_stack_value
... and was surprised to see that the DW_OP_stack_value didn't appear
in the "readelf" output.
The problem here is that DW_OP_const1u requires an operand, but
neither the DWARF assembler nor gas diagnosed this problem.
This patch adds some checking to Dwarf::_location to try to avoid this
in the future. The checking is done via a helper proc that also
dissects the argument list and sets an array in the caller's frame.
gdb/testsuite/ChangeLog
2021-03-31 Tom Tromey <tromey@adacore.com>
* lib/dwarf.exp (Dwarf::_get_args): New proc.
(Dwarf::_location): Use it.
On openSUSE Tumbleweed, DEBUGINFOD_URLS is now defined by default:
...
$ echo $DEBUGINFOD_URLS
https://debuginfod.opensuse.org/
...
With DEBUGINFOD_URLS defined we run into:
...
FAIL: gdb.mi/mi-sym-info.exp: List all functions from debug information only \
(timeout)
...
as reported in PR27667.
There's a latency of ~0.5s per request, which is ok-ish for interactive usage.
But the symbol-info-functions command ends up issuing 21 source requests,
which means we easily run into the 10s timeout.
Fix this by unsetting DEBUGINFOD_URLS in default_gdb_init.
gdb/testsuite/ChangeLog:
2021-03-31 Tom de Vries <tdevries@suse.de>
PR testsuite/27667
* lib/gdb.exp (default_gdb_init): Unset DEBUGINFOD_URLS.
New in v2:
- Disable sharing only for -readnow objfiles, not all objfiles.
As described in PR 27541, we hit an internal error when loading a binary
the standard way and then loading it with the -readnow option:
$ ./gdb -nx -q --data-directory=data-directory ~/a.out -ex "set confirm off" -ex "file -readnow ~/a.out"
Reading symbols from /home/simark/a.out...
Reading symbols from ~/a.out...
/home/simark/src/binutils-gdb/gdb/dwarf2/read.c:8098: internal-error: void create_all_comp_units(dwarf2_per_objfile*): Assertion `per_objfile->per_bfd->all_comp_units.empty ()' failed.
This is a recurring problem that exposes a design issue in the DWARF
per-BFD sharing feature. Things work well when loading a binary with
the same method (with/without index, with/without readnow) twice in a
row. But they don't work so well when loading a binary with different
methods. See this previous fix, for example:
efb763a5ea ("gdb: check for partial symtab presence in dwarf2_initialize_objfile")
That one handled the case where the first load is normal (uses partial
symbols) and the second load uses an index.
The problem is that when loading an objfile with a method A, we create a
dwarf2_per_bfd and some dwarf2_per_cu_data and initialize them with the
data belonging to that method. When loading another obfile sharing the
same BFD but with a different method B, it's not clear how to re-use the
dwarf2_per_bfd/dwarf2_per_cu_data previously created, because they
contain the data specific to method A.
I think the most sensible fix would be to not share a dwarf2_per_bfd
between two objfiles loaded with different methods. That means that two
objfiles sharing the same BFD and loaded the same way would share a
dwarf2_per_bfd. Two objfiles sharing the same BFD but loaded with
different methods would use two different dwarf2_per_bfd structures.
However, this isn't a trivial change. So to fix the known issue quickly
(including in the gdb 10 branch), this patch just disables all
dwarf2_per_bfd sharing for objfiles using READNOW.
Generalize the gdb.base/index-cache-load-twice.exp test to test all
the possible combinations of loading a file with partial symtabs, index
and readnow. Move it to gdb.dwarf2, since it really exercises features
of the DWARF reader.
gdb/ChangeLog:
PR gdb/27541
* dwarf2/read.c (dwarf2_has_info): Don't share dwarf2_per_bfd
with objfiles using READNOW.
gdb/testsuite/ChangeLog:
PR gdb/27541
* gdb.base/index-cache-load-twice.exp: Remove.
* gdb.base/index-cache-load-twice.c: Remove.
* gdb.dwarf2/per-bfd-sharing.exp: New.
* gdb.dwarf2/per-bfd-sharing.c: New.
Change-Id: I9ffcf1e136f3e75242f70e4e58e4ba1fd3083389
Since commit 27012aba8a "Remove Irix 6 workaround from DWARF abbrev reader"
we have:
...
(gdb) file dw2-cu-size^M
Reading symbols from dw2-cu-size...^M
DW_FORM_strp pointing outside of .debug_str section [in module dw2-cu-size]^M
(No debugging symbols found in dw2-cu-size)^M
(gdb) ptype noloc^M
No symbol table is loaded. Use the "file" command.^M
(gdb) FAIL: gdb.dwarf2/dw2-cu-size.exp: ptype noloc
...
The problem is a missing .debug_abbrev terminator in dw2-cu-size.S, which
causes the .debug_abbrev contribution to be merged with the next:
...
Number TAG (0x9b)
1 DW_TAG_compile_unit [has children]
DW_AT_name DW_FORM_string
DW_AT_producer DW_FORM_string
DW_AT_language DW_FORM_data1
DW_AT value: 0 DW_FORM value: 0
2 DW_TAG_variable [no children]
DW_AT_name DW_FORM_string
DW_AT_type DW_FORM_ref4
DW_AT_external DW_FORM_flag
DW_AT value: 0 DW_FORM value: 0
3 DW_TAG_base_type [no children]
DW_AT_name DW_FORM_string
DW_AT_byte_size DW_FORM_data1
DW_AT_encoding DW_FORM_data1
DW_AT value: 0 DW_FORM value: 0
4 DW_TAG_const_type [no children]
DW_AT_type DW_FORM_ref_udata
DW_AT value: 0 DW_FORM value: 0
1 DW_TAG_compile_unit [has children]
DW_AT_producer DW_FORM_strp
DW_AT_language DW_FORM_data1
DW_AT_name DW_FORM_strp
DW_AT_comp_dir DW_FORM_strp
DW_AT_low_pc DW_FORM_addr
DW_AT_high_pc DW_FORM_data8
DW_AT_stmt_list DW_FORM_sec_offset
DW_AT value: 0 DW_FORM value: 0
...
and consequently, abbreviation code 1 no longer refers to a unique entry.
The eventually causes us to access the first attribute of this DIE:
...
<0><124>: Abbrev Number: 1 (DW_TAG_compile_unit)
<125> DW_AT_name : file1.txt
<12f> DW_AT_producer : GNU C 3.3.3
<13b> DW_AT_language : 1 (ANSI C)
...
which has form DW_FORM_string, using DW_FORM_strp.
Fix this by adding the missing .debug_abbrev terminator in dw2-cu-size.S.
gdb/testsuite/ChangeLog:
2021-03-30 Tom de Vries <tdevries@suse.de>
PR testsuite/27604
* gdb.dwarf2/dw2-cu-size.S: Add missing .debug_abbrev terminator.
I noticed that language_info is only ever called with a value of '1'.
This patch removes the parameter.
2021-03-29 Tom Tromey <tromey@adacore.com>
* top.c (check_frame_language_change): Update.
* language.c (language_info): Remove parameter.
* language.h (language_info): Remove parameter.
On aarch64-linux, I noticed the compile command didn't work at all. It
always gave the following error:
aarch64-linux-gnu-g++: error: : No such file or directory
Turns out we're passing an empty argv entry to GCC (because aarch64 doesn't
have a -m64 option), and GCC's behavior is to think that is a file it needs
to open. One can reproduce it like so:
gcc "" "" "" ""
gcc: error: : No such file or directory
gcc: error: : No such file or directory
gcc: error: : No such file or directory
gcc: error: : No such file or directory
gcc: fatal error: no input files
compilation terminated.
The solution is to check for an empty string and skip adding that to argv.
Regression tested on aarch64-linux/Ubuntu 18.04/20.04.
gdb/ChangeLog:
2021-03-29 Luis Machado <luis.machado@linaro.org>
* compile/compile.c (get_args): Don't add empty argv entries.
It was reported to me that on Ubuntu 14.04 (fairly old) the documentation
fails to build with the following:
gdb/doc/gdb.texinfo:10888: warning: node `Memory' is up for `Memory Tagging' in sectioning but not in menu
gdb/doc/gdb.texinfo:10693: node `Memory' lacks menu item for `Memory Tagging' despite being its Up target
Makefile:491: recipe for target 'gdb.info' failed
make[3]: *** [gdb.info] Error 1
This doesn't seem to happen on Ubuntu 18.04/20.04, but it does make sense.
Fix this by turning @subsection into a @section and adding the
"Memory Tagging" entry to the menu.
gdb/doc/ChangeLog:
2021-03-29 Luis Machado <luis.machado@linaro.org>
* gdb.textinfo (Memory Tagging): Make it a @section.
This test causes several timeouts for Clang, taking too long time to
finish. The reason is, for an infinite loop of the form
while(1); /* suppose this is line 30. */
Clang generates code that looks like
0x00000000004004d4 <+4>: jmp 0x4004d9 <loop+9>
0x00000000004004d9 <+9>: jmp 0x4004d9 <loop+9>
So, the real loop is the instruction at address 0x4004d9. But a
breakpoint that's defined at the loop line (assume line 30 in this
case) is inserted at address 0x4004d4.
(gdb) break 30
Breakpoint 1 at 0x4004d4: file test.c, line 30.
Therefore, continuing a thread that was spinning on the loop does not hit
the breakpoint. The bug is reported at
https://bugs.llvm.org/show_bug.cgi?id=49614
Tweak the infinite loop to spin on a variable to avoid this bug. The
test is unrelated to the bug.
gdb/testsuite/ChangeLog:
2021-03-29 Tankut Baris Aktemur <tankut.baris.aktemur@intel.com>
* gdb.mi/user-selected-context-sync.exp: Spin on a variable in
the infinite loop to avoid a Clang bug.
Since c8fbd44a01 (gdb: remove
target_is_pushed free function), procfs.c compilation is broken, which
went unnoticed for lack of functioning buildbots:
/vol/src/gnu/gdb/hg/master/dist/gdb/procfs.c: In member function 'virtual void procfs_target::attach(const char*, int)':
/vol/src/gnu/gdb/hg/master/dist/gdb/procfs.c:1772:8: error: 'inf' was not declared in this scope; did you mean 'info'?
1772 | if (!inf->target_is_pushed (this))
| ^~~
| info
/vol/src/gnu/gdb/hg/master/dist/gdb/procfs.c: In member function 'virtual void procfs_target::create_inferior(const char*, const string&, char**, int)':
/vol/src/gnu/gdb/hg/master/dist/gdb/procfs.c:2865:8: error: 'inf' was not declared in this scope; did you mean 'info'?
2865 | if (!inf->target_is_pushed (this))
| ^~~
| info
Fixed by defining inf. Tested on amd64-pc-solaris2.11 and
sparcv9-sun-solaris2.11.
2021-03-29 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
gdb:
* procfs.c (procfs_target::attach): Define inf.
Use it.
(procfs_target::create_inferior): Likewise.
Now that the quick functions are separate from the object file format,
there's no need to have elfread.c push a new entry on the objfile 'qf'
list. Instead, this detail can be pushed into the DWARF reader. That
is what this patch implements.
I wasn't sure whether lazy reading still makes sense or not. It's
still only used by ELF, and only in certain situations (like vfork, I
think). It may not be carrying its weight, so we may want to consider
removing this in the future.
Also, I'm unclear on why the various indices are only used for ELF.
This seems sub-optimal. However, I haven't tried to address that
here.
gdb/ChangeLog
2021-03-28 Tom Tromey <tom@tromey.com>
* elfread.c (can_lazily_read_symbols): Move to dwarf2/read.c.
(elf_symfile_read): Simplify.
* dwarf2/read.c (struct lazy_dwarf_reader): Move from elfread.c.
(make_lazy_dwarf_reader): New function.
(make_dwarf_gdb_index, make_dwarf_debug_names): Now static.
(dwarf2_initialize_objfile): Return void. Remove index_kind
parameter. Push on 'qf' list.
* dwarf2/public.h (dwarf2_initialize_objfile): Change return
type. Remove 'index_kind' parameter.
(make_dwarf_gdb_index, make_dwarf_debug_names): Don't declare.
An earlier patch neglected to delete a forward declaration of
elf_sym_fns_lazy_psyms. This is no longer defined. This patch
removes it.
gdb/ChangeLog
2021-03-27 Tom Tromey <tom@tromey.com>
* elfread.c (elf_sym_fns_lazy_psyms): Don't declare.
I noticed that I forgot to make a change in my series to make it
possible to attach multiple debug readers to an objfile. In one spot,
elf_symfile_read still clears the 'qf' list. However, this should
have been removed toward the end of that series.
This patch fixes the offending spot. Tested on x86-64 Fedora 32.
gdb/ChangeLog
2021-03-27 Tom Tromey <tom@tromey.com>
* elfread.c (elf_symfile_read): Don't clear 'qf'.
Resolve some duplicate test name warnings in gdb.arch/powerpc-*.exp
tests by either extending the existing test names, or providing a new
test name.
gdb/testsuite/ChangeLog:
* gdb.arch/powerpc-disassembler-options.exp: Extend some test
names for uniqueness.
* gdb.arch/powerpc-fpscr-gcore.exp: Add more test names for
uniqueness.
While working on gdb-add-index.sh, it appeared that it uses the non
POSIX 'local' keyword. Instead of using local to allow variable
shadowing, I rename the local one to avoid name conflicts altogether.
This commit gets rid of the following shellcheck warning:
In gdb-add-index.sh line 63:
local file="$1"
^--------^ SC2039: In POSIX sh, 'local' is undefined.
gdb/ChangeLog:
* contrib/gdb-add-index.sh: Avoid variable shadowing and get
rid of 'local'.
This changes quick_symbol_functions::map_symbol_filenames to use a
function_view, and updates all the uses. It also changes the final
parameter to 'bool'. A couple of spots are further updated to use
operator() rather than a lambda.
gdb/ChangeLog
2021-03-26 Tom Tromey <tom@tromey.com>
* symtab.c (struct output_source_filename_data): Add 'output'
method and operator().
(output_source_filename_data::output): Rename from
output_source_filename.
(output_partial_symbol_filename): Remove.
(info_sources_command): Update.
(struct add_partial_filename_data): Add operator().
(add_partial_filename_data::operator()): Rename from
maybe_add_partial_symtab_filename.
(make_source_files_completion_list): Update.
* symfile.c (quick_symbol_functions): Update.
* symfile-debug.c (objfile::map_symbol_filenames): Update.
* quick-symbol.h (symbol_filename_ftype): Change type of 'fun' and
'need_fullname'. Remove 'data' parameter.
(struct quick_symbol_functions) <map_symbol_filenames>: Likewise.
* psymtab.c (psymbol_functions::map_symbol_filenames): Update.
* psympriv.h (struct psymbol_functions) <map_symbol_filenames>:
Change type of 'fun' and 'need_fullname'. Remove 'data'
parameter.
* objfiles.h (struct objfile) <map_symbol_filenames>: Change type
of 'fun' and 'need_fullname'. Remove 'data' parameter.
* mi/mi-cmd-file.c (print_partial_file_name): Remove 'ignore'
parameter.
(mi_cmd_file_list_exec_source_files): Update.
* dwarf2/read.c
(dwarf2_base_index_functions::map_symbol_filenames): Update.
I noticed that ada-lang.c creates a lambda to call
aux_add_nonlocal_symbols. However, this code can be simplified a bit
by changing match_data to implement operator(), and then simply
passing the object as the callback. That is what this patch
implements.
gdb/ChangeLog
2021-03-26 Tom Tromey <tom@tromey.com>
* ada-lang.c (struct match_data): Add operator().
(match_data::operator()): Rename from aux_add_nonlocal_symbols.
(callback): Remove 'callback'.
