ChangeLog:
* spu-tdep.c: Include "infcall.h". (spu_address_class_type_flags): New function. (spu_address_class_type_flags_to_name): Likewise. (spu_address_class_name_to_type_flags): Likewise. (spu_pointer_to_address): Handle __ea pointers. (spu_auto_flush_cache_p): New static variable. (spu_objfile_from_frame): New function. (flush_ea_cache, spu_attach_normal_stop): Likewise. (show_spu_auto_flush_cache): Likewise. (spu_gdbarch_init): Install address class handlers. (_initialize_spu_tdep): Attach to normal_stop observer. Install "set spu auto-flush-cache" / "show spu auto-flush-cache" commands. * NEWS: Mention "set/show spu auto-flush-cache" commands. doc/ChangeLog: * gdb.texinfo (Cell Broadband Engine SPU architecture): Document the "set spu auto-flush-cache" and "show spu auto-flush-cache" commands.
This commit is contained in:
Ulrich Weigand
parent
3285f3fe1a
commit
ff1a52c620
5 changed files with 178 additions and 2 deletions
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@ -1,3 +1,21 @@
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2009-07-31 Ulrich Weigand <uweigand@de.ibm.com>
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* spu-tdep.c: Include "infcall.h".
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(spu_address_class_type_flags): New function.
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(spu_address_class_type_flags_to_name): Likewise.
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(spu_address_class_name_to_type_flags): Likewise.
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(spu_pointer_to_address): Handle __ea pointers.
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(spu_auto_flush_cache_p): New static variable.
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(spu_objfile_from_frame): New function.
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(flush_ea_cache, spu_attach_normal_stop): Likewise.
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(show_spu_auto_flush_cache): Likewise.
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(spu_gdbarch_init): Install address class handlers.
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(_initialize_spu_tdep): Attach to normal_stop observer.
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Install "set spu auto-flush-cache" / "show spu auto-flush-cache"
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commands.
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* NEWS: Mention "set/show spu auto-flush-cache" commands.
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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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5
gdb/NEWS
5
gdb/NEWS
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@ -263,6 +263,11 @@ 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 spu auto-flush-cache
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show spu auto-flush-cache
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Control whether to automatically flush the software-managed cache
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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 auto-flush-cache" and "show spu auto-flush-cache" commands.
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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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@ -17505,6 +17505,16 @@ function. The default is @code{off}.
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@kindex show spu
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Show whether to stop for new SPE threads.
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@item set spu auto-flush-cache @var{arg}
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Set whether to automatically flush the software-managed cache. When set to
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@code{on}, @value{GDBN} will automatically cause the SPE software-managed
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cache to be flushed whenever SPE execution stops. This provides a consistent
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view of PowerPC memory that is accessed via the cache. If an application
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does not use the software-managed cache, this option has no effect.
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@item show spu auto-flush-cache
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Show whether to automatically flush the software-managed cache.
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@end table
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@node PowerPC
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142
gdb/spu-tdep.c
142
gdb/spu-tdep.c
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@ -42,6 +42,7 @@
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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 "infcall.h"
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#include "spu-tdep.h"
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@ -52,6 +53,8 @@ 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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/* Whether to automatically flush the SW-managed cache. */
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static int spu_auto_flush_cache_p = 1;
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/* The tdep structure. */
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@ -340,7 +343,8 @@ spu_register_reggroup_p (struct gdbarch *gdbarch, int regnum,
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return default_register_reggroup_p (gdbarch, regnum, group);
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}
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/* Address conversion. */
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/* Address handling. */
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static int
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spu_gdbarch_id (struct gdbarch *gdbarch)
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@ -377,6 +381,37 @@ spu_lslr (int id)
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return strtoulst (buf, NULL, 16);
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}
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static int
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spu_address_class_type_flags (int byte_size, int dwarf2_addr_class)
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{
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if (dwarf2_addr_class == 1)
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return TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
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else
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return 0;
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}
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static const char *
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spu_address_class_type_flags_to_name (struct gdbarch *gdbarch, int type_flags)
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{
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if (type_flags & TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1)
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return "__ea";
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else
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return NULL;
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}
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static int
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spu_address_class_name_to_type_flags (struct gdbarch *gdbarch,
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const char *name, int *type_flags_ptr)
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{
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if (strcmp (name, "__ea") == 0)
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{
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*type_flags_ptr = TYPE_INSTANCE_FLAG_ADDRESS_CLASS_1;
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return 1;
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}
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else
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return 0;
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}
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static void
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spu_address_to_pointer (struct gdbarch *gdbarch,
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struct type *type, gdb_byte *buf, CORE_ADDR addr)
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@ -396,6 +431,10 @@ spu_pointer_to_address (struct gdbarch *gdbarch,
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ULONGEST addr
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= extract_unsigned_integer (buf, TYPE_LENGTH (type), byte_order);
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/* Do not convert __ea pointers. */
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if (TYPE_ADDRESS_CLASS_1 (type))
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return addr;
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return addr? SPUADDR (id, addr & lslr) : 0;
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}
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@ -1820,6 +1859,73 @@ spu_catch_start (struct objfile *objfile)
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}
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/* Look up OBJFILE loaded into FRAME's SPU context. */
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static struct objfile *
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spu_objfile_from_frame (struct frame_info *frame)
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{
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struct gdbarch *gdbarch = get_frame_arch (frame);
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struct gdbarch_tdep *tdep = gdbarch_tdep (gdbarch);
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struct objfile *obj;
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if (gdbarch_bfd_arch_info (gdbarch)->arch != bfd_arch_spu)
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return NULL;
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ALL_OBJFILES (obj)
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{
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if (obj->sections != obj->sections_end
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&& SPUADDR_SPU (obj_section_addr (obj->sections)) == tdep->id)
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return obj;
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}
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return NULL;
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}
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/* Flush cache for ea pointer access if available. */
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static void
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flush_ea_cache (void)
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{
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struct minimal_symbol *msymbol;
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struct objfile *obj;
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if (!has_stack_frames ())
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return;
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obj = spu_objfile_from_frame (get_current_frame ());
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if (obj == NULL)
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return;
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/* Lookup inferior function __cache_flush. */
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msymbol = lookup_minimal_symbol ("__cache_flush", NULL, obj);
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if (msymbol != NULL)
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{
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struct type *type;
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CORE_ADDR addr;
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type = objfile_type (obj)->builtin_void;
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type = lookup_function_type (type);
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type = lookup_pointer_type (type);
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addr = SYMBOL_VALUE_ADDRESS (msymbol);
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call_function_by_hand (value_from_pointer (type, addr), 0, NULL);
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}
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}
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/* This handler is called when the inferior has stopped. If it is stopped in
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SPU architecture then flush the ea cache if used. */
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static void
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spu_attach_normal_stop (struct bpstats *bs, int print_frame)
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{
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if (!spu_auto_flush_cache_p)
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return;
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/* Temporarily reset spu_auto_flush_cache_p to avoid recursively
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re-entering this function when __cache_flush stops. */
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spu_auto_flush_cache_p = 0;
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flush_ea_cache ();
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spu_auto_flush_cache_p = 1;
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}
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/* "info spu" commands. */
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static void
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@ -2411,6 +2517,14 @@ show_spu_stop_on_load (struct ui_file *file, int from_tty,
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value);
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}
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static void
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show_spu_auto_flush_cache (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, _("Automatic software-cache flush is %s.\n"),
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value);
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}
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/* Set up gdbarch struct. */
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@ -2480,10 +2594,16 @@ spu_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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set_gdbarch_double_format (gdbarch, floatformats_ieee_double);
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set_gdbarch_long_double_format (gdbarch, floatformats_ieee_double);
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/* Address conversion. */
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/* Address handling. */
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set_gdbarch_address_to_pointer (gdbarch, spu_address_to_pointer);
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set_gdbarch_pointer_to_address (gdbarch, spu_pointer_to_address);
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set_gdbarch_integer_to_address (gdbarch, spu_integer_to_address);
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set_gdbarch_address_class_type_flags (gdbarch, spu_address_class_type_flags);
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set_gdbarch_address_class_type_flags_to_name
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(gdbarch, spu_address_class_type_flags_to_name);
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set_gdbarch_address_class_name_to_type_flags
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(gdbarch, spu_address_class_name_to_type_flags);
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/* Inferior function calls. */
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set_gdbarch_call_dummy_location (gdbarch, ON_STACK);
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@ -2536,6 +2656,9 @@ _initialize_spu_tdep (void)
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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 ourselves to normal_stop event chain. */
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observer_attach_normal_stop (spu_attach_normal_stop);
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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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@ -2559,6 +2682,21 @@ Use \"off\" to disable stopping for new SPE threads."),
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show_spu_stop_on_load,
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&setspucmdlist, &showspucmdlist);
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/* Toggle whether or not to automatically flush the software-managed
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cache whenever SPE execution stops. */
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add_setshow_boolean_cmd ("auto-flush-cache", class_support,
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&spu_auto_flush_cache_p, _("\
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Set whether to automatically flush the software-managed cache."),
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_("\
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Show whether to automatically flush the software-managed cache."),
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_("\
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Use \"on\" to automatically flush the software-managed cache\n\
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whenever SPE execution stops.\n\
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Use \"off\" to never automatically flush the software-managed cache."),
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NULL,
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show_spu_auto_flush_cache,
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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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