ChangeLog:
* spu-tdep.c: Include "block.h". (setspucmdlist, showspucmdlist): New static variables. (spu_stop_on_load_p): Likewise. (spu_catch_start): New function. (show_spu_command, set_spu_command): New functions. (show_spu_stop_on_load): Likewise. (_initialize_spu_tdep): Attach spu_catch_start to new_objfile observer. Install "set spu" / "show spu" prefix command handler. Install "set spu stop-on-load" / "show spu stop-on-load" command. * NEWS: Mention "set/show spu stop-on-load" commands. doc/ChangeLog: * gdb.texinfo (Cell Broadband Engine SPU architecture): Document the "set spu stop-on-load" and "show spu stop-on-load" commands.
This commit is contained in:
Ulrich Weigand
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cc5f0d6150
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5 changed files with 157 additions and 0 deletions
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@ -1,3 +1,17 @@
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2009-07-31 Ulrich Weigand <uweigand@de.ibm.com>
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* spu-tdep.c: Include "block.h".
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(setspucmdlist, showspucmdlist): New static variables.
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(spu_stop_on_load_p): Likewise.
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(spu_catch_start): New function.
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(show_spu_command, set_spu_command): New functions.
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(show_spu_stop_on_load): Likewise.
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(_initialize_spu_tdep): Attach spu_catch_start to new_objfile observer.
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Install "set spu" / "show spu" prefix command handler.
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Install "set spu stop-on-load" / "show spu stop-on-load" command.
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* NEWS: Mention "set/show spu stop-on-load" commands.
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2009-07-31 Ulrich Weigand <uweigand@de.ibm.com>
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* ppc-linux-tdep.c: Include "solib.h", "solist.h", "exceptions.h",
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4
gdb/NEWS
4
gdb/NEWS
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@ -259,6 +259,10 @@ kill inferior NUM
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* New options
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set spu stop-on-load
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show spu stop-on-load
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Control whether to stop for new SPE threads during Cell/B.E. debugging.
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set sh calling-convention
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show sh calling-convention
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Control the calling convention used when calling SH target functions.
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@ -1,3 +1,8 @@
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2009-07-31 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.texinfo (Cell Broadband Engine SPU architecture): Document the
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"set spu stop-on-load" and "show spu stop-on-load" commands.
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2009-07-31 Ulrich Weigand <uweigand@de.ibm.com>
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* gdb.texinfo (Target Descriptions): Document <compatible> element.
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@ -17490,6 +17490,23 @@ and local store addresses and transfer size are shown.
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@end table
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When @value{GDBN} is debugging a combined PowerPC/SPU application
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on the Cell Broadband Engine, it provides in addition the following
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special commands:
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@table @code
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@item set spu stop-on-load @var{arg}
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@kindex set spu
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Set whether to stop for new SPE threads. When set to @code{on}, @value{GDBN}
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will give control to the user when a new SPE thread enters its @code{main}
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function. The default is @code{off}.
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@item show spu stop-on-load
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@kindex show spu
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Show whether to stop for new SPE threads.
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@end table
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@node PowerPC
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@subsection PowerPC
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@cindex PowerPC architecture
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117
gdb/spu-tdep.c
117
gdb/spu-tdep.c
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@ -40,11 +40,20 @@
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#include "regcache.h"
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#include "reggroups.h"
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#include "floatformat.h"
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#include "block.h"
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#include "observer.h"
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#include "spu-tdep.h"
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/* The list of available "set spu " and "show spu " commands. */
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static struct cmd_list_element *setspucmdlist = NULL;
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static struct cmd_list_element *showspucmdlist = NULL;
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/* Whether to stop for new SPE contexts. */
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static int spu_stop_on_load_p = 0;
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/* The tdep structure. */
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struct gdbarch_tdep
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{
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@ -1752,6 +1761,65 @@ spu_overlay_new_objfile (struct objfile *objfile)
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}
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/* Insert temporary breakpoint on "main" function of newly loaded
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SPE context OBJFILE. */
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static void
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spu_catch_start (struct objfile *objfile)
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{
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struct minimal_symbol *minsym;
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struct symtab *symtab;
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CORE_ADDR pc;
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char buf[32];
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/* Do this only if requested by "set spu stop-on-load on". */
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if (!spu_stop_on_load_p)
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return;
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/* Consider only SPU objfiles. */
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if (!objfile || bfd_get_arch (objfile->obfd) != bfd_arch_spu)
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return;
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/* The main objfile is handled differently. */
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if (objfile == symfile_objfile)
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return;
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/* There can be multiple symbols named "main". Search for the
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"main" in *this* objfile. */
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minsym = lookup_minimal_symbol ("main", NULL, objfile);
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if (!minsym)
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return;
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/* If we have debugging information, try to use it -- this
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will allow us to properly skip the prologue. */
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pc = SYMBOL_VALUE_ADDRESS (minsym);
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symtab = find_pc_sect_symtab (pc, SYMBOL_OBJ_SECTION (minsym));
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if (symtab != NULL)
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{
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struct blockvector *bv = BLOCKVECTOR (symtab);
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struct block *block = BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK);
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struct symbol *sym;
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struct symtab_and_line sal;
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sym = lookup_block_symbol (block, "main", NULL, VAR_DOMAIN);
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if (sym)
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{
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fixup_symbol_section (sym, objfile);
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sal = find_function_start_sal (sym, 1);
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pc = sal.pc;
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}
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}
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/* Use a numerical address for the set_breakpoint command to avoid having
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the breakpoint re-set incorrectly. */
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xsnprintf (buf, sizeof buf, "*%s", core_addr_to_string (pc));
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set_breakpoint (get_objfile_arch (objfile),
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buf, NULL /* condition */,
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0 /* hardwareflag */, 1 /* tempflag */,
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-1 /* thread */, 0 /* ignore_count */,
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0 /* pending */, 1 /* enabled */);
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}
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/* "info spu" commands. */
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static void
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@ -2321,6 +2389,29 @@ info_spu_command (char *args, int from_tty)
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}
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/* Root of all "set spu "/"show spu " commands. */
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static void
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show_spu_command (char *args, int from_tty)
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{
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help_list (showspucmdlist, "show spu ", all_commands, gdb_stdout);
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}
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static void
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set_spu_command (char *args, int from_tty)
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{
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help_list (setspucmdlist, "set spu ", all_commands, gdb_stdout);
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}
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static void
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show_spu_stop_on_load (struct ui_file *file, int from_tty,
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struct cmd_list_element *c, const char *value)
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{
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fprintf_filtered (file, _("Stopping for new SPE threads is %s.\n"),
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value);
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}
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/* Set up gdbarch struct. */
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static struct gdbarch *
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@ -2442,6 +2533,32 @@ _initialize_spu_tdep (void)
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observer_attach_new_objfile (spu_overlay_new_objfile);
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spu_overlay_data = register_objfile_data ();
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/* Install spu stop-on-load handler. */
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observer_attach_new_objfile (spu_catch_start);
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/* Add root prefix command for all "set spu"/"show spu" commands. */
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add_prefix_cmd ("spu", no_class, set_spu_command,
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_("Various SPU specific commands."),
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&setspucmdlist, "set spu ", 0, &setlist);
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add_prefix_cmd ("spu", no_class, show_spu_command,
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_("Various SPU specific commands."),
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&showspucmdlist, "show spu ", 0, &showlist);
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/* Toggle whether or not to add a temporary breakpoint at the "main"
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function of new SPE contexts. */
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add_setshow_boolean_cmd ("stop-on-load", class_support,
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&spu_stop_on_load_p, _("\
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Set whether to stop for new SPE threads."),
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_("\
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Show whether to stop for new SPE threads."),
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_("\
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Use \"on\" to give control to the user when a new SPE thread\n\
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enters its \"main\" function.\n\
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Use \"off\" to disable stopping for new SPE threads."),
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NULL,
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show_spu_stop_on_load,
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&setspucmdlist, &showspucmdlist);
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/* Add root prefix command for all "info spu" commands. */
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add_prefix_cmd ("spu", class_info, info_spu_command,
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_("Various SPU specific commands."),
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