The code failed to account for padding between the int and subsequent
pointer present on 64-bit architectures.
gdb/ChangeLog:
* linux-record.c (record_linux_msghdr): Fix msg_namelen handling.
getdents buffer size is given in bytes, not dirent entries (which have
variable size anyway). We don't need size_dirent and size_dirent64 for
this reason.
readdir, on the other hand, needs size of old_linux_dirent, which is
a somewhat different structure. Accordingly, rename size_dirent
to size_old_dirent.
gdb/ChangeLog:
* aarch64-linux-tdep.c (aarch64_linux_init_abi): Remove
size_dirent{,64}, add size_old_dirent.
* amd64-linux-tdep.c (amd64_linux_init_abi): Remove size_dirent{,64},
add size_old_dirent.
(amd64_x32_linux_init_abi): Remove size_dirent{,64}, add
size_old_dirent.
* arm-linux-tdep.c (arm_linux_init_abi): Remove size_dirent{,64},
add size_old_dirent.
* i386-linux-tdep.c (i386_linux_init_abi): Remove size_dirent{,64},
add size_old_dirent.
* linux-record.c (record_linux_system_call): Fix handling of readdir
and getdents{,64}.
* linux-record.h (struct linux_record_tdep): Remove size_dirent{,64},
add size_old_dirent.
* ppc-linux-tdep.c (ppc_init_linux_record_tdep): Remove
size_dirent{,64}, add size_old_dirent.
i386 and arm wrongly set them to 2, when it should be 4. size_[ug]id is used
by getgroups32 etc syscalls, while size_old_[ug]id is used for getgroups16
and friends.
gdb/ChangeLog:
* arm-linux-tdep.c (arm_linux_init_abi): Fix size_[ug]id.
* i386-linux-tdep.c (i386_linux_init_abi): Fix size_[ug]id.
gdb/testsuite/ChangeLog:
* gdb.reverse/fstatat-reverse.c: New test.
* gdb.reverse/fstatat-reverse.exp: New file.
* gdb.reverse/getresuid-reverse.c: New test.
* gdb.reverse/getresuid-reverse.exp: New file.
* gdb.reverse/pipe-reverse.c: New test.
* gdb.reverse/pipe-reverse.exp: New file.
* gdb.reverse/readv-reverse.c: New test.
* gdb.reverse/readv-reverse.exp: New file.
* gdb.reverse/recvmsg-reverse.c: New test.
* gdb.reverse/recvmsg-reverse.exp: New file.
* gdb.reverse/time-reverse.c: New test.
* gdb.reverse/time-reverse.exp: New file.
* gdb.reverse/waitpid-reverse.c: New test.
* gdb.reverse/waitpid-reverse.exp: New file.
Fixes on i386:
../../../binutils-gdb/gdb/gdbserver/proc-service.c: In function ps_pdread:
../../../binutils-gdb/gdb/gdbserver/proc-service.c:83:25: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
../../../binutils-gdb/gdb/gdbserver/proc-service.c: In function ps_pdwrite:
../../../binutils-gdb/gdb/gdbserver/proc-service.c:93:30: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast]
I could have kept both casts:
(CORE_ADDR) (uintptr_t) addr
but it's cleaner this way. The uintptr_t implicitely gets promoted to a
CORE_ADDR, which is at least as long as uintptr_t.
gdb/gdbserver/ChangeLog:
* proc-service.c (ps_pdread): Change CORE_ADDR cast to uintptr_t.
(ps_pdwrite): Likewise.
gdb/gdbserver/ChangeLog:
* linux-arm-low.c (arm_new_thread): Move pointer dereference
to after assert checks.
Signed-off-by: Henrik Wallin <henrik.wallin@windriver.com>
The casts are required because ps_pd{read,write} must respect a fixed
interface.
gdb/gdbserver/ChangeLog:
* proc-service.c (ps_pdread): Add/adjust casts.
(ps_pdwrite): Add/adjust casts.
This fixes this error in C++ mode:
/home/pedro/gdb/mygit/cxx-convertion/src/gdb/mdebugread.c:654:11: error: invalid conversion from ‘int’ to ‘address_class’ [-fpermissive]
theclass = mdebug_register_index;
^
The "theclass" local is of type enum address_class, however, what it
really holds is an address class index. Class index values by design
match the address class values up until LOC_FINAL_VALUE, but extend
beyond that, so it's not really right to store an address class index
in an enum address_class.
The fix is really the same making the 'theclass' local be of type int,
but while we're at it, we get rid of the goto, and thus the local
becomes the 'aclass_index' parameter in the new add_data_symbol
function.
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* mdebugread.c (add_data_symbol): New function, factored out from
...
(parse_symbol): ... here. Delete 'theclass' local.
We could change the signature of the function. However, it would
require changing gdb_target_read in jit-reader.h, which is an exported
interface. It's probably better to just add a cast in our code than to
break other people's code.
gdb/ChangeLog:
* jit.c (jit_target_read_impl): Add cast.
There is no enum value representing 0. It seems like the value of the
name field is irrelevant here.
gdb/ChangeLog:
* dwarf2read.c (partial_die_full_name): Add cast.
Fixes this in C++:
../../src/gdb/break-catch-sig.c: In function ‘int VEC_gdb_signal_type_iterate(const VEC_gdb_signal_type*, unsigned int, gdb_signal_type*)’:
../../src/gdb/common/vec.h:576:12: error: invalid conversion from ‘int’ to ‘gdb_signal_type {aka gdb_signal}’ [-fpermissive]
*ptr = 0; \
^
../../src/gdb/common/vec.h:417:1: note: in expansion of macro ‘DEF_VEC_FUNC_P’
DEF_VEC_FUNC_P(T) \
^
../../src/gdb/break-catch-sig.c:37:1: note: in expansion of macro ‘DEF_VEC_I’
DEF_VEC_I (gdb_signal_type);
^
I actually carried a different fix in the C++ branch that removed this
assignment and then adjusted all callers that depended on it. The
thinking was that this is for the case where we're returning false,
indicating end of iteration. But that results in a much larger and
tricker patch; looking back it seems quite pointless. I looked at the
history of GCC's C++ conversion and saw that they added this same cast
to their version of vec.h, FWIW. (GCC's vec.h is completely different
nowadays, having been converted to templates meanwhile.)
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* common/vec.h (DEF_VEC_FUNC_P) [iterate]: Cast 0 to type T.
I looked at changing these is_destructor_name/is_constructor_name
interfaces in order to detangle the boolean result from the ctor/dtor
kind return, but then realized that this design goes all the way down
to the libiberty demangler interfaces. E.g, include/demangle.h:
~~~
/* Return non-zero iff NAME is the mangled form of a constructor name
in the G++ V3 ABI demangling style. Specifically, return an `enum
gnu_v3_ctor_kinds' value indicating what kind of constructor
it is. */
extern enum gnu_v3_ctor_kinds
is_gnu_v3_mangled_ctor (const char *name);
enum gnu_v3_dtor_kinds {
gnu_v3_deleting_dtor = 1,
gnu_v3_complete_object_dtor,
gnu_v3_base_object_dtor,
/* These are not part of the V3 ABI. Unified destructors are generated
as a speed-for-space optimization when the -fdeclone-ctor-dtor option
is used, and are always internal symbols. */
gnu_v3_unified_dtor,
gnu_v3_object_dtor_group
};
~~~
libiberty/cp-demangle.c:
~~~
enum gnu_v3_ctor_kinds
is_gnu_v3_mangled_ctor (const char *name)
{
enum gnu_v3_ctor_kinds ctor_kind;
enum gnu_v3_dtor_kinds dtor_kind;
if (! is_ctor_or_dtor (name, &ctor_kind, &dtor_kind))
return (enum gnu_v3_ctor_kinds) 0;
return ctor_kind;
}
~~~
etc.
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* gnu-v2-abi.c (gnuv2_is_destructor_name)
(gnuv2_is_constructor_name): Add casts.
... for C++.
Fixes:
gdb/gdbserver/mem-break.c:204:28: error: invalid conversion from 'int' to 'bkpt_type' [-fpermissive]
gdb/gdbserver/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* mem-break.c (Z_packet_to_bkpt_type): Add cast.
... as needed for C++.
tpoint->handle is a generic 'void *' handle.
gdb/gdbserver/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* tracepoint.c (clear_installed_tracepoints): Add casts.
This is code parsing RSP signal numbers, checking whether the numbers
are indeed valid/known GDB signals, and then converting to host signal
numbers. I considered adding temporary enum gdb_signal variables
instead, but didn't really like the result.
gdb/gdbserver/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* server.c (handle_v_cont, process_serial_event): Add enum
gdb_signal casts to signal parsing code.
Fixes:
../../../src/gdb/gdbserver/linux-low.c: In function ‘int linux_low_read_btrace(btrace_target_info*, buffer*, int)’:
../../../src/gdb/gdbserver/linux-low.c:6827:48: error: invalid conversion from ‘int’ to ‘btrace_read_type’ [-fpermissive]
err = linux_read_btrace (&btrace, tinfo, type);
^
In file included from ../../../src/gdb/gdbserver/linux-low.c:98:0:
../../../src/gdb/gdbserver/../nat/linux-btrace.h:116:26: error: initializing argument 3 of ‘btrace_error linux_read_btrace(btrace_data*, btrace_target_info*, btrace_read_type)’ [-fpermissive]
extern enum btrace_error linux_read_btrace (struct btrace_data *btrace,
^
The cyclic dependency the comment talks about is no longer relevant:
https://sourceware.org/ml/gdb-patches/2015-10/msg00643.html
gdb/gdbserver/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* linux-low.c (linux_low_read_btrace): Change type of 'type'
parameter.
* server.c (handle_qxfer_btrace): Change type of 'type'
local.
* target.h (struct target_ops) <read_btrace>: Change type of
'type' parameter. Update comment.
Fixes, in C++ mode:
../../src/gdb/common/common-exceptions.c:23:69: error: invalid conversion from ‘int’ to ‘return_reason’ [-fpermissive]
const struct gdb_exception exception_none = { 0, GDB_NO_ERROR, NULL };
^
(I considered adding an enum value for '0', but the code and comments
around return_reason and its uses explain how 0 is special/internal,
so I'm leaving it be.)
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* common/common-exceptions.c (exception_none): Add cast.
Fixes:
src/gdb/compile/compile-c-types.c:36:12: error: declaration of ‘gcc_type type_map_instance::gcc_type’ [-fpermissive]
gcc_type gcc_type;
^
In file included from src/gdb/../include/gcc-c-interface.h:23:0,
from src/gdb/compile/compile-internal.h:21,
from src/gdb/compile/compile-c-types.c:23:
src/gdb/../include/gcc-interface.h:32:28: error: changes meaning of ‘gcc_type’ from ‘typedef long long unsigned int gcc_type’ [-fpermissive]
typedef unsigned long long gcc_type;
^
src/gdb/compile/compile-c-types.c: In function ‘gcc_type convert_qualified(compile_c_instance*, type*)’:
src/gdb/compile/compile-c-types.c:310:19: error: invalid conversion from ‘int’ to ‘gcc_qualifiers’ [-fpermissive]
quals);
^
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* compile/compile-c-types.c (struct type_map_instance)
<gcc_type>: Rename to gcc_type_handle.
(insert_type, convert_type): Adjust.
In C++, this:
try
{
break;
}
catch (..)
{}
is invalid. However, because our TRY/CATCH macros support it in C,
the C++ version of those macros support it too. To catch such
assumptions, this adds a (disabled) hack that maps TRY/CATCH to raw
C++ try/catch. Then it goes through all instances that building on
x86_64 GNU/Linux trips on, fixing them.
This isn't strictly necessary yet, but I think it's nicer to try to
keep the tree in a state where it's easier to eliminate the TRY/CATCH
macros.
gdb/ChangeLog:
2015-10-29 Pedro Alves <palves@redhat.com>
* dwarf2-frame-tailcall.c (dwarf2_tailcall_sniffer_first): Don't
assume that "break" breaks out of a TRY/CATCH.
* python/py-framefilter.c (py_print_single_arg): Don't assume
"continue" breaks out of a TRY/CATCH.
* python/py-value.c (valpy_binop_throw): New function, factored
out from ...
(valpy_binop): ... this.
(valpy_richcompare_throw): New function, factored
out from ...
(valpy_richcompare): ... this.
* solib.c (solib_read_symbols): Don't assume "break" breaks out
of a TRY/CATCH.
* common/common-exceptions.h [USE_RAW_CXX_TRY]
<TRY/CATCH/END_CATCH>: Define as 1-1 wrappers around try/catch.
A patch (http://sourceware.org/ml/binutils/2015-07/msg00376.html)
submitted to binutils will be encoding move as an 'or' instruction over
[d]addu in assembly and various code stubs. This patch for gdb addresses
that change for the mips specific parts of gdb.
gdb/ChangeLog:
* mips-linux-tdep.c (mips_linux_in_dynsym_stub): Recognise 'or'
as move along with [d]addu.
Nowadays aarch64_decode_insn is a public interface used by both
opcodes and gdb. However, its behaviour relies on a global variable
no_aliases, which isn't a good practise. On the other hand, In default,
no_aliases is zero, but in GDB, we do want no alias when decoding
instructions for prologue analysis (patches to be posted), so that we
can handle both instructions "add" and "mov" (an alias of "add") as
"add". The code in GDB can be simplified.
This patch adds a new argument in aarch64_decode_insn, and pass no_aliases
to it. In GDB side, always pass 1 to it.
include/opcode:
2015-10-28 Yao Qi <yao.qi@linaro.org>
* aarch64.h (aarch64_decode_insn): Update declaration.
opcodes:
2015-10-28 Yao Qi <yao.qi@linaro.org>
* aarch64-dis.c (aarch64_decode_insn): Add one argument
noaliases_p. Update comments. Pass noaliases_p rather than
no_aliases to aarch64_opcode_decode.
(print_insn_aarch64_word): Pass no_aliases to
aarch64_decode_insn.
gdb:
2015-10-28 Yao Qi <yao.qi@linaro.org>
* aarch64-tdep.c (aarch64_software_single_step): Pass 1 to
aarch64_decode_insn.
Fixes a set of errors like:
../../src/gdb/symfile-debug.c: In function ‘int debug_qf_map_symtabs_matching_filename(objfile*, const char*, const char*, int (*)(symtab*, void*), void*)’:
../../src/gdb/symfile-debug.c:137:39: error: invalid conversion from ‘int (*)(symtab*, void*)’ to ‘const void*’ [-fpermissive]
host_address_to_string (callback),
^
Note this has to work with data and function pointers. In C++11 we
may perhaps do something a bit safer, but we're not there yet, and I
don't think it really matters. For now just always do a simple
C-style cast in host_address_to_string itself. No point in adding a
void * cast to each and every caller.
gdb/ChangeLog:
2015-10-27 Pedro Alves <palves@redhat.com>
* common/print-utils.c (host_address_to_string): Rename to ...
(host_address_to_string_1): ... this.
* common/print-utils.h (host_address_to_string): Reimplement as
wrapper around host_address_to_string_1.
* utils.c (gdb_print_host_address): Rename to ...
(gdb_print_host_address_1): ... this.
* utils.h (gdb_print_host_address): Reimplement as wrapper macro
around host_address_to_string_1.
Years ago, these functions used to return errno/EIO. Later, through a
series of changes that intended to remove native/remote differences,
they ended up returning a target_xfer_status in disguise.
Unlike target_xfer_partial&co, the point of target_read_memory&co is
to either fully succeed or fail. On error, they always return
TARGET_XFER_E_IO. So there's no real point in casting the return of
target_read_memory to a target_xfer_status to pass it to memory_error.
Instead, it results in clearer code to simply decouple
target_read_memory&co's return from target_xfer_status.
This fixes build errors like this in C++ mode:
../../src/gdb/corefile.c: In function ‘void read_stack(CORE_ADDR, gdb_byte*, ssize_t)’:
../../src/gdb/corefile.c:276:34: error: invalid conversion from ‘int’ to ‘target_xfer_status’ [-fpermissive]
memory_error (status, memaddr);
^
../../src/gdb/corefile.c:216:1: error: initializing argument 1 of ‘void memory_error(target_xfer_status, CORE_ADDR)’ [-fpermissive]
gdb/ChangeLog:
2015-10-27 Pedro Alves <palves@redhat.com>
* alpha-tdep.c (alpha_read_insn): Always pass TARGET_XFER_E_IO to
memory_error. Rename local 'status' to 'res'.
* c-lang.c (c_get_string): Always pass TARGET_XFER_E_IO to
memory_error.
* corefile.c (read_stack, read_code, write_memory): Always pass
TARGET_XFER_E_IO to memory_error.
* disasm.c (dis_asm_memory_error): Always pass TARGET_XFER_E_IO to
memory_error. Rename parameter 'status' to 'err'.
(dump_insns): Rename local 'status' to 'err'.
* mips-tdep.c (mips_fetch_instruction): Rename parameter 'statusp'
to 'errp'. Rename local 'status' to 'err'. Always pass
TARGET_XFER_E_IO to memory_error.
(mips_breakpoint_from_pc): Rename local 'status' to 'err'.
* target.c (target_read_memory, target_read_raw_memory)
(target_read_stack, target_read_code, target_write_memory)
(target_write_raw_memory): Return -1 on error instead of
TARGET_XFER_E_IO.
* valprint.c (val_print_string): Rename local 'errcode' to 'err'.
Always pass TARGET_XFER_E_IO to memory_error. Update comment.
The documentation of gdbscm_with_guile says that it returns a statically
allocated string (IOW, a const char *). We can reflect that in its
return value type, and get rid of C++ build errors.
Initially fixes:
/home/simark/src/binutils-gdb/gdb/guile/scm-disasm.c: In function ‘void* gdbscm_disasm_read_memory_worker(void*)’:
/home/simark/src/binutils-gdb/gdb/guile/scm-disasm.c:93:12: error: invalid conversion from ‘const void*’ to ‘void*’ [-fpermissive]
return "seek error";
gdb/ChangeLog:
* guile/guile-internal.h (gdbscm_with_guile): Change return
types to const char *.
* guile/scm-safe-call.c (gdbscm_with_guile): Likewise.
(struct c_data) <func>: Likewise.
(struct c_data) <result>: Change type to const char *.
(scscm_eval_scheme_string): Change return type to
const char *.
(scscm_source_scheme_script): Likewise.
(gdbscm_safe_eval_string): Change type of result variable to
const char * and remove cast.
(gdbscm_safe_source_script): Likewise.
* guile/scm-disasm.c (gdbscm_disasm_read_memory_worker):
Change return type to const char *.
(gdbscm_disasm_read_memory): Change type of status to
const char *.
openp's return is documented as:
~~~
If a file is found, return the descriptor.
Otherwise, return -1, with errno set for the last name we tried to open. */
~~~
By inspection, I noticed that there are function calls after the ones
that first set errno, and those may clobber errno. It's safer to save
errno when see an open fail, and restore it on exit.
Tested on x86_64 Fedora 20.
gdb/ChangeLog:
2015-10-27 Pedro Alves <palves@redhat.com>
* source.c (openp): New local 'last_errno'. Use it to
save/restore errno.
This patch was taken directly from Pedro's branch.
Right now, SET_INT32_FIELD is used to set enum fields. This works in C,
but not C++. Therefore, define the new SET_ENUM_FIELD, which casts the
value to the right enum type.
gdb/ChangeLog:
* ctf.c (SET_ENUM_FIELD): New macro.
(ctf_read_status): Use it.
(ctf_read_tp): Use it.
There is a handful of calls to
scm_dynwind_begin (0);
where the parameter is an enum, scm_t_dynwind_flags. In C++, we have no
choice but to add an explicit cast, since there is no enum value that
represents 0 (no flags set).
gdb/ChangeLog:
* guile/scm-breakpoint.c (gdbscm_set_breakpoint_stop_x): Add
scm_t_dynwind_flags casts.
* guile/scm-cmd.c (gdbscm_parse_command_name): Likewise.
* guile/scm-ports.c (gdbscm_open_memory): Likewise.
* guile/scm-value.c (gdbscm_value_to_string): Likewise.
This patch was taken directly from Pedro's branch.
ax_simple is used to append an agent expression operator to an agent
expression string. Therefore, it takes an enum agent_op as input.
There is an instance where it's called to append a raw byte, unrelated
to the enum. It makes the build fail in C++ mode.
This patch introduces ax_raw_byte for that purpose and uses it.
gdb/ChangeLog:
* ax.h (ax_raw_byte): New declaration.
* ax-general.c (ax_raw_byte): New function.
(ax_simple): Use ax_raw_byte.
* ax-gdb.c (gen_printf): Likewise.
The assignment requires a cast in C++. We only use this macro for
vectors of chars, so adding (char *) diretly will do for now.
gdb/ChangeLog:
* ada-lang.h (GROW_VECT): Add cast.
Running ./gdb.ada/access_to_packed_array.exp ...
ERROR: tcl error sourcing ./gdb.ada/access_to_packed_array.exp.
ERROR: extra characters after close-quote
while executing
"gdb_test "print pack.a" "\\(0 => 1, 2, 3, 4, 5, 6, 7, 8, 9, 10\\)")"
(file "./gdb.ada/access_to_packed_array.exp" line 29)
invoked from within
"source ./gdb.ada/access_to_packed_array.exp"
("uplevel" body line 1)
invoked from within
"uplevel #0 source ./gdb.ada/access_to_packed_array.exp"
invoked from within
"catch "uplevel #0 source $test_file_name""
Unrelated to the typos I have changed the print expectations s/"x"/" = x"/
as for example expectation "3" should not match " = 43".
2015-10-27 Jan Kratochvil <jan.kratochvil@redhat.com>
* gdb.ada/access_to_packed_array.exp: Fix typos erroring the testfile.
Fixes some errors in C++ build.
gdb/ChangeLog:
* target.c (memory_xfer_partial): Change type of buf to gdb_byte
pointer.
(simple_search_memory): Cast return of memmem.
gdb/ChangeLog:
PR python/18938
* cli/cli-cmds (source_script_fron_sctream): New arg file_to_open.
All callers updated.
gdb/testsuite/ChangeLog:
* gdb.python/python.exp: Add test for symlink from .py file to .notpy
file.
gdb/ChangeLog:
* nat/linux-nat.h (__SIGRTMIN): Move here from gdbserver/linux-low.c.
gdb/gdbserver/ChangeLog:
* linux-low.c (__SIGRTMIN): Move to nat/linux-nat.h.
gdb/ChangeLog:
* common/gdb_wait.h (W_STOPCODE): Define, moved here from
gdbserver/linux-low.c.
(WSETSTOP): Simplify.
gdb/gdbserver/ChangeLog:
* linux-low.c (W_STOPCODE): Moved to common/gdb_wait.h.
gdb/ChangeLog:
* linux-thread-db.c (find_new_threads_callback): Cast ti.ti_tid to
unsigned long for debug_printf.
(thread_db_pid_to_str): Ditto.
gdb/gdbserver/ChangeLog:
* thread-db.c (find_one_thread): Cast ti.ti_tid to unsigned long
for debug_printf.
(attach_thread, find_new_threads_callback): Ditto.
As pointed out by Pedro, it's clearer to do it this way. We can trust
that scm_mode_bits won't try to modify our string, even though it takes
a non-const char *.
gdb/ChangeLog:
* guile/scm-ports.c (ioscm_make_gdb_stdio_port): Do not pass a
local char array to scm_mode_bits, use a cast instead.
Marcin Kościelnicki
Simon Marchi
Henrik Wallin
Pedro Alves
Simon Marchi
Eli Zaretskii
Simon Dardis
Yao Qi
Jan Kratochvil
Doug Evans
Doug Evans