diff options
| -rw-r--r-- | gdb/ChangeLog | 11 | ||||
| -rw-r--r-- | gdb/corelow.c | 37 | ||||
| -rw-r--r-- | gdb/gdbarch.c | 32 | ||||
| -rw-r--r-- | gdb/gdbarch.h | 10 | ||||
| -rwxr-xr-x | gdb/gdbarch.sh | 5 | ||||
| -rw-r--r-- | gdb/linux-tdep.c | 21 |
6 files changed, 92 insertions, 24 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index 9c00622..35762a9 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,16 @@ 2017-07-07 John Baldwin <jhb@FreeBSD.org> + * corelow.c (get_core_siginfo): Remove. + (core_xfer_partial): Use the gdbarch "core_xfer_siginfo" method + instead of get_core_siginfo. + * gdbarch.sh (core_xfer_siginfo): New gdbarch callback. + * gdbarch.h: Re-generate. + * gdbarch.c: Re-generate. + * linux-tdep.c (linux_core_xfer_siginfo): New. + (linux_init_abi): Install gdbarch "core_xfer_siginfo" method. + +2017-07-07 John Baldwin <jhb@FreeBSD.org> + * corelow.c (thread_section_name): Move to ... * gdbcore.h (thread_section_name): ... here. diff --git a/gdb/corelow.c b/gdb/corelow.c index 578c910..5dbabc79 100644 --- a/gdb/corelow.c +++ b/gdb/corelow.c @@ -668,25 +668,6 @@ add_to_spuid_list (bfd *abfd, asection *asect, void *list_p) list->pos += 4; } -/* Read siginfo data from the core, if possible. Returns -1 on - failure. Otherwise, returns the number of bytes read. ABFD is the - core file's BFD; READBUF, OFFSET, and LEN are all as specified by - the to_xfer_partial interface. */ - -static LONGEST -get_core_siginfo (bfd *abfd, gdb_byte *readbuf, ULONGEST offset, ULONGEST len) -{ - thread_section_name section_name (".note.linuxcore.siginfo", inferior_ptid); - asection *section = bfd_get_section_by_name (abfd, section_name.c_str ()); - if (section == NULL) - return -1; - - if (!bfd_get_section_contents (abfd, section, readbuf, offset, len)) - return -1; - - return len; -} - static enum target_xfer_status core_xfer_partial (struct target_ops *ops, enum target_object object, const char *annex, gdb_byte *readbuf, @@ -874,12 +855,20 @@ core_xfer_partial (struct target_ops *ops, enum target_object object, case TARGET_OBJECT_SIGNAL_INFO: if (readbuf) { - LONGEST l = get_core_siginfo (core_bfd, readbuf, offset, len); - - if (l > 0) + if (core_gdbarch + && gdbarch_core_xfer_siginfo_p (core_gdbarch)) { - *xfered_len = len; - return TARGET_XFER_OK; + LONGEST l = gdbarch_core_xfer_siginfo (core_gdbarch, readbuf, + offset, len); + + if (l >= 0) + { + *xfered_len = l; + if (l == 0) + return TARGET_XFER_EOF; + else + return TARGET_XFER_OK; + } } } return TARGET_XFER_E_IO; diff --git a/gdb/gdbarch.c b/gdb/gdbarch.c index e5efdfb..24521b5 100644 --- a/gdb/gdbarch.c +++ b/gdb/gdbarch.c @@ -287,6 +287,7 @@ struct gdbarch gdbarch_core_xfer_shared_libraries_aix_ftype *core_xfer_shared_libraries_aix; gdbarch_core_pid_to_str_ftype *core_pid_to_str; gdbarch_core_thread_name_ftype *core_thread_name; + gdbarch_core_xfer_siginfo_ftype *core_xfer_siginfo; const char * gcore_bfd_target; int vtable_function_descriptors; int vbit_in_delta; @@ -646,6 +647,7 @@ verify_gdbarch (struct gdbarch *gdbarch) /* Skip verify of core_xfer_shared_libraries_aix, has predicate. */ /* Skip verify of core_pid_to_str, has predicate. */ /* Skip verify of core_thread_name, has predicate. */ + /* Skip verify of core_xfer_siginfo, has predicate. */ /* Skip verify of gcore_bfd_target, has predicate. */ /* Skip verify of vtable_function_descriptors, invalid_p == 0 */ /* Skip verify of vbit_in_delta, invalid_p == 0 */ @@ -884,6 +886,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file) "gdbarch_dump: core_xfer_shared_libraries_aix = <%s>\n", host_address_to_string (gdbarch->core_xfer_shared_libraries_aix)); fprintf_unfiltered (file, + "gdbarch_dump: gdbarch_core_xfer_siginfo_p() = %d\n", + gdbarch_core_xfer_siginfo_p (gdbarch)); + fprintf_unfiltered (file, + "gdbarch_dump: core_xfer_siginfo = <%s>\n", + host_address_to_string (gdbarch->core_xfer_siginfo)); + fprintf_unfiltered (file, "gdbarch_dump: decr_pc_after_break = %s\n", core_addr_to_string_nz (gdbarch->decr_pc_after_break)); fprintf_unfiltered (file, @@ -3797,6 +3805,30 @@ set_gdbarch_core_thread_name (struct gdbarch *gdbarch, } int +gdbarch_core_xfer_siginfo_p (struct gdbarch *gdbarch) +{ + gdb_assert (gdbarch != NULL); + return gdbarch->core_xfer_siginfo != NULL; +} + +LONGEST +gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len) +{ + gdb_assert (gdbarch != NULL); + gdb_assert (gdbarch->core_xfer_siginfo != NULL); + if (gdbarch_debug >= 2) + fprintf_unfiltered (gdb_stdlog, "gdbarch_core_xfer_siginfo called\n"); + return gdbarch->core_xfer_siginfo (gdbarch, readbuf, offset, len); +} + +void +set_gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, + gdbarch_core_xfer_siginfo_ftype core_xfer_siginfo) +{ + gdbarch->core_xfer_siginfo = core_xfer_siginfo; +} + +int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch) { gdb_assert (gdbarch != NULL); diff --git a/gdb/gdbarch.h b/gdb/gdbarch.h index ab7561f..1c95301 100644 --- a/gdb/gdbarch.h +++ b/gdb/gdbarch.h @@ -933,6 +933,16 @@ typedef const char * (gdbarch_core_thread_name_ftype) (struct gdbarch *gdbarch, extern const char * gdbarch_core_thread_name (struct gdbarch *gdbarch, struct thread_info *thr); extern void set_gdbarch_core_thread_name (struct gdbarch *gdbarch, gdbarch_core_thread_name_ftype *core_thread_name); +/* Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information + from core file into buffer READBUF with length LEN. Return the number + of bytes read (zero indicates EOF, a negative value indicates failure). */ + +extern int gdbarch_core_xfer_siginfo_p (struct gdbarch *gdbarch); + +typedef LONGEST (gdbarch_core_xfer_siginfo_ftype) (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len); +extern LONGEST gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, ULONGEST offset, ULONGEST len); +extern void set_gdbarch_core_xfer_siginfo (struct gdbarch *gdbarch, gdbarch_core_xfer_siginfo_ftype *core_xfer_siginfo); + /* BFD target to use when generating a core file. */ extern int gdbarch_gcore_bfd_target_p (struct gdbarch *gdbarch); diff --git a/gdb/gdbarch.sh b/gdb/gdbarch.sh index 22f5715..3aab17f 100755 --- a/gdb/gdbarch.sh +++ b/gdb/gdbarch.sh @@ -755,6 +755,11 @@ M;const char *;core_pid_to_str;ptid_t ptid;ptid # How the core target extracts the name of a thread from a core file. M;const char *;core_thread_name;struct thread_info *thr;thr +# Read offset OFFSET of TARGET_OBJECT_SIGNAL_INFO signal information +# from core file into buffer READBUF with length LEN. Return the number +# of bytes read (zero indicates EOF, a negative value indicates failure). +M;LONGEST;core_xfer_siginfo;gdb_byte *readbuf, ULONGEST offset, ULONGEST len; readbuf, offset, len + # BFD target to use when generating a core file. V;const char *;gcore_bfd_target;;;0;0;;;pstring (gdbarch->gcore_bfd_target) diff --git a/gdb/linux-tdep.c b/gdb/linux-tdep.c index 2792cbd..5c7f8a0 100644 --- a/gdb/linux-tdep.c +++ b/gdb/linux-tdep.c @@ -1127,6 +1127,26 @@ linux_core_info_proc (struct gdbarch *gdbarch, const char *args, error (_("unable to handle request")); } +/* Read siginfo data from the core, if possible. Returns -1 on + failure. Otherwise, returns the number of bytes read. READBUF, + OFFSET, and LEN are all as specified by the to_xfer_partial + interface. */ + +static LONGEST +linux_core_xfer_siginfo (struct gdbarch *gdbarch, gdb_byte *readbuf, + ULONGEST offset, ULONGEST len) +{ + thread_section_name section_name (".note.linuxcore.siginfo", inferior_ptid); + asection *section = bfd_get_section_by_name (core_bfd, section_name.c_str ()); + if (section == NULL) + return -1; + + if (!bfd_get_section_contents (core_bfd, section, readbuf, offset, len)) + return -1; + + return len; +} + typedef int linux_find_memory_region_ftype (ULONGEST vaddr, ULONGEST size, ULONGEST offset, ULONGEST inode, int read, int write, @@ -2516,6 +2536,7 @@ linux_init_abi (struct gdbarch_info info, struct gdbarch *gdbarch) set_gdbarch_core_pid_to_str (gdbarch, linux_core_pid_to_str); set_gdbarch_info_proc (gdbarch, linux_info_proc); set_gdbarch_core_info_proc (gdbarch, linux_core_info_proc); + set_gdbarch_core_xfer_siginfo (gdbarch, linux_core_xfer_siginfo); set_gdbarch_find_memory_regions (gdbarch, linux_find_memory_regions); set_gdbarch_make_corefile_notes (gdbarch, linux_make_corefile_notes); set_gdbarch_has_shared_address_space (gdbarch, |