2013-02-04 Sergio Durigan Junior <sergiodj@redhat.com>
Denys Vlasenko <dvlasenk@redhat.com> Pedro Alves <palves@redhat.com> * gdbarch.sh (elfcore_write_linux_prpsinfo): New F hook. (struct elf_internal_linux_prpsinfo): Forward declare. * gdbarch.h, gdbarch.c: Regenerate. * linux-tdep.c: Include `cli/cli-utils.h'. (linux_fill_prpsinfo): New function. (linux_make_corefile_notes): Use linux_fill_prpsinfo. If there's an elfcore_write_linux_prpsinfo hook, use it, otherwise, use elfcore_write_linux_prpsinfo32 or elfcore_write_linux_prpsinfo64 depending on gdbarch pointer bitness. * ppc-linux-tdep.c: Include elf-bfd.h. (ppc_linux_init_abi): Hook in elfcore_write_ppc_linux_prpsinfo32 on 32-bit.
This commit is contained in:
Sergio Durigan Junior
parent
70a38d42c5
commit
b3ac9c7756
@ -1,3 +1,20 @@
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2013-02-04 Sergio Durigan Junior <sergiodj@redhat.com>
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Denys Vlasenko <dvlasenk@redhat.com>
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Pedro Alves <palves@redhat.com>
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* gdbarch.sh (elfcore_write_linux_prpsinfo): New F hook.
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(struct elf_internal_linux_prpsinfo): Forward declare.
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* gdbarch.h, gdbarch.c: Regenerate.
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* linux-tdep.c: Include `cli/cli-utils.h'.
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(linux_fill_prpsinfo): New function.
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(linux_make_corefile_notes): Use linux_fill_prpsinfo. If there's
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an elfcore_write_linux_prpsinfo hook, use it, otherwise, use
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elfcore_write_linux_prpsinfo32 or elfcore_write_linux_prpsinfo64
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depending on gdbarch pointer bitness.
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* ppc-linux-tdep.c: Include elf-bfd.h.
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(ppc_linux_init_abi): Hook in elfcore_write_ppc_linux_prpsinfo32
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on 32-bit.
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2013-02-04 Jim MacArthur <jim.macarthur@arm.com>
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Marcus Shawcroft <marcus.shawcroft@arm.com>
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Nigel Stephens <nigel.stephens@arm.com>
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@ -238,6 +238,7 @@ struct gdbarch
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gdbarch_regset_from_core_section_ftype *regset_from_core_section;
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struct core_regset_section * core_regset_sections;
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gdbarch_make_corefile_notes_ftype *make_corefile_notes;
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gdbarch_elfcore_write_linux_prpsinfo_ftype *elfcore_write_linux_prpsinfo;
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gdbarch_find_memory_regions_ftype *find_memory_regions;
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gdbarch_core_xfer_shared_libraries_ftype *core_xfer_shared_libraries;
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gdbarch_core_pid_to_str_ftype *core_pid_to_str;
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@ -408,6 +409,7 @@ struct gdbarch startup_gdbarch =
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0, /* regset_from_core_section */
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0, /* core_regset_sections */
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0, /* make_corefile_notes */
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0, /* elfcore_write_linux_prpsinfo */
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0, /* find_memory_regions */
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0, /* core_xfer_shared_libraries */
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0, /* core_pid_to_str */
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@ -709,6 +711,7 @@ verify_gdbarch (struct gdbarch *gdbarch)
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/* Skip verify of fetch_pointer_argument, has predicate. */
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/* Skip verify of regset_from_core_section, has predicate. */
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/* Skip verify of make_corefile_notes, has predicate. */
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/* Skip verify of elfcore_write_linux_prpsinfo, has predicate. */
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/* Skip verify of find_memory_regions, has predicate. */
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/* Skip verify of core_xfer_shared_libraries, has predicate. */
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/* Skip verify of core_pid_to_str, has predicate. */
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@ -954,6 +957,12 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
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fprintf_unfiltered (file,
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"gdbarch_dump: elf_make_msymbol_special = <%s>\n",
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host_address_to_string (gdbarch->elf_make_msymbol_special));
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fprintf_unfiltered (file,
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"gdbarch_dump: gdbarch_elfcore_write_linux_prpsinfo_p() = %d\n",
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gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch));
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fprintf_unfiltered (file,
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"gdbarch_dump: elfcore_write_linux_prpsinfo = <%s>\n",
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host_address_to_string (gdbarch->elfcore_write_linux_prpsinfo));
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fprintf_unfiltered (file,
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"gdbarch_dump: fast_tracepoint_valid_at = <%s>\n",
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host_address_to_string (gdbarch->fast_tracepoint_valid_at));
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@ -3367,6 +3376,30 @@ set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch,
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gdbarch->make_corefile_notes = make_corefile_notes;
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}
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int
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gdbarch_elfcore_write_linux_prpsinfo_p (struct gdbarch *gdbarch)
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{
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gdb_assert (gdbarch != NULL);
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return gdbarch->elfcore_write_linux_prpsinfo != NULL;
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}
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char *
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gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info)
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{
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gdb_assert (gdbarch != NULL);
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gdb_assert (gdbarch->elfcore_write_linux_prpsinfo != NULL);
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if (gdbarch_debug >= 2)
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fprintf_unfiltered (gdb_stdlog, "gdbarch_elfcore_write_linux_prpsinfo called\n");
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return gdbarch->elfcore_write_linux_prpsinfo (obfd, note_data, note_size, info);
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}
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void
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set_gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch,
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gdbarch_elfcore_write_linux_prpsinfo_ftype elfcore_write_linux_prpsinfo)
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{
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gdbarch->elfcore_write_linux_prpsinfo = elfcore_write_linux_prpsinfo;
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}
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int
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gdbarch_find_memory_regions_p (struct gdbarch *gdbarch)
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{
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@ -57,6 +57,7 @@ struct agent_expr;
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struct axs_value;
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struct stap_parse_info;
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struct ravenscar_arch_ops;
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struct elf_internal_linux_prpsinfo;
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/* The architecture associated with the inferior through the
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connection to the target.
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@ -736,6 +737,18 @@ typedef char * (gdbarch_make_corefile_notes_ftype) (struct gdbarch *gdbarch, bfd
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extern char * gdbarch_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size);
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extern void set_gdbarch_make_corefile_notes (struct gdbarch *gdbarch, gdbarch_make_corefile_notes_ftype *make_corefile_notes);
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/* The elfcore writer hook to use to write Linux prpsinfo notes to core
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files. Most Linux architectures use the same prpsinfo32 or
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prpsinfo64 layouts, and so won't need to provide this hook, as we
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call the Linux generic routines in bfd to write prpsinfo notes by
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default. */
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extern int gdbarch_elfcore_write_linux_prpsinfo_p (struct gdbarch *gdbarch);
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typedef char * (gdbarch_elfcore_write_linux_prpsinfo_ftype) (bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
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extern char * gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info);
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extern void set_gdbarch_elfcore_write_linux_prpsinfo (struct gdbarch *gdbarch, gdbarch_elfcore_write_linux_prpsinfo_ftype *elfcore_write_linux_prpsinfo);
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/* Find core file memory regions */
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extern int gdbarch_find_memory_regions_p (struct gdbarch *gdbarch);
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@ -641,6 +641,13 @@ v:struct core_regset_section *:core_regset_sections:const char *name, int len:::
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# Create core file notes
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M:char *:make_corefile_notes:bfd *obfd, int *note_size:obfd, note_size
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# The elfcore writer hook to use to write Linux prpsinfo notes to core
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# files. Most Linux architectures use the same prpsinfo32 or
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# prpsinfo64 layouts, and so won't need to provide this hook, as we
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# call the Linux generic routines in bfd to write prpsinfo notes by
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# default.
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F:char *:elfcore_write_linux_prpsinfo:bfd *obfd, char *note_data, int *note_size, const struct elf_internal_linux_prpsinfo *info:obfd, note_data, note_size, info
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# Find core file memory regions
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M:int:find_memory_regions:find_memory_region_ftype func, void *data:func, data
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@ -1082,6 +1089,7 @@ struct agent_expr;
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struct axs_value;
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struct stap_parse_info;
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struct ravenscar_arch_ops;
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struct elf_internal_linux_prpsinfo;
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/* The architecture associated with the inferior through the
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connection to the target.
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235
gdb/linux-tdep.c
235
gdb/linux-tdep.c
@ -32,6 +32,7 @@
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#include "cli/cli-utils.h"
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#include "arch-utils.h"
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#include "gdb_obstack.h"
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#include "cli/cli-utils.h"
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#include <ctype.h>
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@ -1153,6 +1154,206 @@ linux_corefile_thread_callback (struct thread_info *info, void *data)
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return !args->note_data;
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}
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/* Fill the PRPSINFO structure with information about the process being
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debugged. Returns 1 in case of success, 0 for failures. Please note that
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even if the structure cannot be entirely filled (e.g., GDB was unable to
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gather information about the process UID/GID), this function will still
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return 1 since some information was already recorded. It will only return
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0 iff nothing can be gathered. */
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static int
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linux_fill_prpsinfo (struct elf_internal_linux_prpsinfo *p)
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{
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/* The filename which we will use to obtain some info about the process.
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We will basically use this to store the `/proc/PID/FILENAME' file. */
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char filename[100];
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/* The full name of the program which generated the corefile. */
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char *fname;
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/* The basename of the executable. */
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const char *basename;
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/* The arguments of the program. */
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char *psargs;
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char *infargs;
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/* The contents of `/proc/PID/stat' and `/proc/PID/status' files. */
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char *proc_stat, *proc_status;
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/* Temporary buffer. */
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char *tmpstr;
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/* The valid states of a process, according to the Linux kernel. */
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const char valid_states[] = "RSDTZW";
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/* The program state. */
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const char *prog_state;
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/* The state of the process. */
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char pr_sname;
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/* The PID of the program which generated the corefile. */
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pid_t pid;
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/* Process flags. */
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unsigned int pr_flag;
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/* Process nice value. */
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long pr_nice;
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/* The number of fields read by `sscanf'. */
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int n_fields = 0;
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/* Cleanups. */
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struct cleanup *c;
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int i;
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gdb_assert (p != NULL);
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/* Obtaining PID and filename. */
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pid = ptid_get_pid (inferior_ptid);
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xsnprintf (filename, sizeof (filename), "/proc/%d/cmdline", (int) pid);
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fname = target_fileio_read_stralloc (filename);
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if (fname == NULL || *fname == '\0')
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{
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/* No program name was read, so we won't be able to retrieve more
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information about the process. */
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xfree (fname);
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return 0;
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}
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c = make_cleanup (xfree, fname);
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memset (p, 0, sizeof (*p));
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/* Defining the PID. */
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p->pr_pid = pid;
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/* Copying the program name. Only the basename matters. */
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basename = lbasename (fname);
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strncpy (p->pr_fname, basename, sizeof (p->pr_fname));
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p->pr_fname[sizeof (p->pr_fname) - 1] = '\0';
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infargs = get_inferior_args ();
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psargs = xstrdup (fname);
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if (infargs != NULL)
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psargs = reconcat (psargs, psargs, " ", infargs, NULL);
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make_cleanup (xfree, psargs);
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strncpy (p->pr_psargs, psargs, sizeof (p->pr_psargs));
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p->pr_psargs[sizeof (p->pr_psargs) - 1] = '\0';
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xsnprintf (filename, sizeof (filename), "/proc/%d/stat", (int) pid);
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proc_stat = target_fileio_read_stralloc (filename);
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make_cleanup (xfree, proc_stat);
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if (proc_stat == NULL || *proc_stat == '\0')
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{
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/* Despite being unable to read more information about the
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process, we return 1 here because at least we have its
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command line, PID and arguments. */
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do_cleanups (c);
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return 1;
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}
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/* Ok, we have the stats. It's time to do a little parsing of the
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contents of the buffer, so that we end up reading what we want.
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The following parsing mechanism is strongly based on the
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information generated by the `fs/proc/array.c' file, present in
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the Linux kernel tree. More details about how the information is
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displayed can be obtained by seeing the manpage of proc(5),
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specifically under the entry of `/proc/[pid]/stat'. */
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/* Getting rid of the PID, since we already have it. */
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while (isdigit (*proc_stat))
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++proc_stat;
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proc_stat = skip_spaces (proc_stat);
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/* Getting rid of the executable name, since we already have it. We
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know that this name will be in parentheses, so we can safely look
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for the close-paren. */
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while (*proc_stat != ')')
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++proc_stat;
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++proc_stat;
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proc_stat = skip_spaces (proc_stat);
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n_fields = sscanf (proc_stat,
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"%c" /* Process state. */
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"%d%d%d" /* Parent PID, group ID, session ID. */
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"%*d%*d" /* tty_nr, tpgid (not used). */
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"%u" /* Flags. */
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"%*s%*s%*s%*s" /* minflt, cminflt, majflt,
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cmajflt (not used). */
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"%*s%*s%*s%*s" /* utime, stime, cutime,
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cstime (not used). */
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"%*s" /* Priority (not used). */
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"%ld", /* Nice. */
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&pr_sname,
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&p->pr_ppid, &p->pr_pgrp, &p->pr_sid,
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&pr_flag,
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&pr_nice);
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if (n_fields != 6)
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{
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/* Again, we couldn't read the complementary information about
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the process state. However, we already have minimal
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information, so we just return 1 here. */
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do_cleanups (c);
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return 1;
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}
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/* Filling the structure fields. */
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prog_state = strchr (valid_states, pr_sname);
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if (prog_state != NULL)
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p->pr_state = prog_state - valid_states;
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else
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{
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/* Zero means "Running". */
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p->pr_state = 0;
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}
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p->pr_sname = p->pr_state > 5 ? '.' : pr_sname;
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p->pr_zomb = p->pr_sname == 'Z';
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p->pr_nice = pr_nice;
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p->pr_flag = pr_flag;
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/* Finally, obtaining the UID and GID. For that, we read and parse the
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contents of the `/proc/PID/status' file. */
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xsnprintf (filename, sizeof (filename), "/proc/%d/status", (int) pid);
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proc_status = target_fileio_read_stralloc (filename);
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make_cleanup (xfree, proc_status);
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if (proc_status == NULL || *proc_status == '\0')
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{
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/* Returning 1 since we already have a bunch of information. */
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do_cleanups (c);
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return 1;
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}
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/* Extracting the UID. */
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tmpstr = strstr (proc_status, "Uid:");
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if (tmpstr != NULL)
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{
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/* Advancing the pointer to the beginning of the UID. */
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tmpstr += sizeof ("Uid:");
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while (*tmpstr != '\0' && !isdigit (*tmpstr))
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++tmpstr;
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if (isdigit (*tmpstr))
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p->pr_uid = strtol (tmpstr, &tmpstr, 10);
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}
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/* Extracting the GID. */
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tmpstr = strstr (proc_status, "Gid:");
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if (tmpstr != NULL)
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{
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/* Advancing the pointer to the beginning of the GID. */
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tmpstr += sizeof ("Gid:");
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while (*tmpstr != '\0' && !isdigit (*tmpstr))
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++tmpstr;
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if (isdigit (*tmpstr))
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p->pr_gid = strtol (tmpstr, &tmpstr, 10);
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}
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do_cleanups (c);
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return 1;
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}
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/* Fills the "to_make_corefile_note" target vector. Builds the note
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section for a corefile, and returns it in a malloc buffer. */
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@ -1161,26 +1362,30 @@ linux_make_corefile_notes (struct gdbarch *gdbarch, bfd *obfd, int *note_size,
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linux_collect_thread_registers_ftype collect)
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{
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struct linux_corefile_thread_data thread_args;
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struct elf_internal_linux_prpsinfo prpsinfo;
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char *note_data = NULL;
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gdb_byte *auxv;
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int auxv_len;
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/* Process information. */
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if (get_exec_file (0))
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if (linux_fill_prpsinfo (&prpsinfo))
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{
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const char *fname = lbasename (get_exec_file (0));
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char *psargs = xstrdup (fname);
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if (get_inferior_args ())
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psargs = reconcat (psargs, psargs, " ", get_inferior_args (),
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(char *) NULL);
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note_data = elfcore_write_prpsinfo (obfd, note_data, note_size,
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fname, psargs);
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xfree (psargs);
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if (!note_data)
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return NULL;
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if (gdbarch_elfcore_write_linux_prpsinfo_p (gdbarch))
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{
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note_data = gdbarch_elfcore_write_linux_prpsinfo (gdbarch, obfd,
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note_data, note_size,
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&prpsinfo);
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}
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else
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{
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if (gdbarch_ptr_bit (gdbarch) == 64)
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note_data = elfcore_write_linux_prpsinfo64 (obfd,
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note_data, note_size,
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&prpsinfo);
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else
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note_data = elfcore_write_linux_prpsinfo32 (obfd,
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||||
note_data, note_size,
|
||||
&prpsinfo);
|
||||
}
|
||||
}
|
||||
|
||||
/* Thread register information. */
|
||||
|
||||
@ -57,6 +57,7 @@
|
||||
#include "parser-defs.h"
|
||||
#include "user-regs.h"
|
||||
#include <ctype.h>
|
||||
#include "elf-bfd.h" /* for elfcore_write_* */
|
||||
|
||||
#include "features/rs6000/powerpc-32l.c"
|
||||
#include "features/rs6000/powerpc-altivec32l.c"
|
||||
@ -1368,6 +1369,13 @@ ppc_linux_init_abi (struct gdbarch_info info,
|
||||
set_gdbarch_core_regset_sections (gdbarch,
|
||||
ppc64_linux_fp_regset_sections);
|
||||
}
|
||||
|
||||
/* PPC32 uses a different prpsinfo32 compared to most other Linux
|
||||
archs. */
|
||||
if (tdep->wordsize == 4)
|
||||
set_gdbarch_elfcore_write_linux_prpsinfo (gdbarch,
|
||||
elfcore_write_ppc_linux_prpsinfo32);
|
||||
|
||||
set_gdbarch_regset_from_core_section (gdbarch,
|
||||
ppc_linux_regset_from_core_section);
|
||||
set_gdbarch_core_read_description (gdbarch, ppc_linux_core_read_description);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user