extern const struct cris_spec_reg cris_spec_regs[];
/* CRIS version, set via the user command 'set cris-version'. Affects
- register names and sizes.*/
-static unsigned int usr_cmd_cris_version;
+ register names and sizes. */
+static int usr_cmd_cris_version;
/* Indicates whether to trust the above variable. */
static int usr_cmd_cris_version_valid = 0;
+static const char cris_mode_normal[] = "CRIS_MODE_NORMAL";
+static const char cris_mode_guru[] = "CRIS_MODE_GURU";
+static const char *cris_modes[] = {
+ cris_mode_normal,
+ cris_mode_guru,
+ 0
+};
+
+/* CRIS mode, set via the user command 'set cris-mode'. Affects
+ type of break instruction among other things. */
+static const char *usr_cmd_cris_mode = cris_mode_normal;
+
/* Whether to make use of Dwarf-2 CFI (default on). */
static int usr_cmd_cris_dwarf2_cfi = 1;
/* CRIS architecture specific information. */
struct gdbarch_tdep
{
- unsigned int cris_version;
+ int cris_version;
+ const char *cris_mode;
int cris_dwarf2_cfi;
};
return (gdbarch_tdep (current_gdbarch)->cris_version);
}
+static const char *
+cris_mode (void)
+{
+ return (gdbarch_tdep (current_gdbarch)->cris_mode);
+}
+
/* Sigtramp identification code copied from i386-linux-tdep.c. */
#define SIGTRAMP_INSN0 0x9c5f /* movu.w 0xXX, $r9 */
int ret = 0;
char buf[4];
- frame_unwind_register (this_frame, ERP_REGNUM, buf);
+ if (cris_mode () == cris_mode_guru)
+ {
+ frame_unwind_register (this_frame, NRP_REGNUM, buf);
+ }
+ else
+ {
+ frame_unwind_register (this_frame, ERP_REGNUM, buf);
+ }
+
erp = extract_unsigned_integer (buf, 4);
if (erp & 0x1)
static void set_cris_version (char *ignore_args, int from_tty,
struct cmd_list_element *c);
+static void set_cris_mode (char *ignore_args, int from_tty,
+ struct cmd_list_element *c);
+
static void set_cris_dwarf2_cfi (char *ignore_args, int from_tty,
struct cmd_list_element *c);
static const unsigned char *
cris_breakpoint_from_pc (CORE_ADDR *pcptr, int *lenptr)
{
- static unsigned char break_insn[] = {0x38, 0xe9};
+ static unsigned char break8_insn[] = {0x38, 0xe9};
+ static unsigned char break15_insn[] = {0x3f, 0xe9};
*lenptr = 2;
- return break_insn;
+ if (cris_mode () == cris_mode_guru)
+ return break15_insn;
+ else
+ return break8_insn;
}
/* Returns 1 if spec_reg is applicable to the current gdbarch's CRIS version,
/* CRIS-specific user-commands. */
add_setshow_uinteger_cmd ("cris-version", class_support,
&usr_cmd_cris_version,
- "Set the current CRIS version.",
- "Show the current CRIS version.",
- "Set if autodetection fails.",
- NULL, /* PRINT: Current CRIS version is %s. */
- set_cris_version, NULL,
+ _("Set the current CRIS version."),
+ _("Show the current CRIS version."),
+ _("\
+Set to 10 for CRISv10 or 32 for CRISv32 if autodetection fails.\n\
+Defaults to 10. "),
+ set_cris_version,
+ NULL, /* FIXME: i18n: Current CRIS version is %s. */
&setlist, &showlist);
+
+ add_setshow_enum_cmd ("cris-mode", class_support,
+ cris_modes, &usr_cmd_cris_mode,
+ _("Set the current CRIS mode."),
+ _("Show the current CRIS mode."),
+ _("\
+Set to CRIS_MODE_GURU when debugging in guru mode.\n\
+Makes GDB use the NRP register instead of the ERP register in certain cases."),
+ set_cris_mode,
+ NULL, /* FIXME: i18n: Current CRIS version is %s. */
+ &setlist, &showlist);
add_setshow_boolean_cmd ("cris-dwarf2-cfi", class_support,
&usr_cmd_cris_dwarf2_cfi,
- "Set the usage of Dwarf-2 CFI for CRIS.",
- "Show the usage of Dwarf-2 CFI for CRIS.",
- "Set to \"off\" if using gcc-cris < R59.",
- NULL, /* PRINT: Usage of Dwarf-2 CFI for CRIS is %d. */
- set_cris_dwarf2_cfi, NULL,
+ _("Set the usage of Dwarf-2 CFI for CRIS."),
+ _("Show the usage of Dwarf-2 CFI for CRIS."),
+ _("Set this to \"off\" if using gcc-cris < R59."),
+ set_cris_dwarf2_cfi,
+ NULL, /* FIXME: i18n: Usage of Dwarf-2 CFI for CRIS is %d. */
&setlist, &showlist);
deprecated_add_core_fns (&cris_elf_core_fns);
{
fprintf_unfiltered (file, "cris_dump_tdep: tdep->cris_version = %i\n",
tdep->cris_version);
+ fprintf_unfiltered (file, "cris_dump_tdep: tdep->cris_mode = %s\n",
+ tdep->cris_mode);
fprintf_unfiltered (file, "cris_dump_tdep: tdep->cris_dwarf2_cfi = %i\n",
tdep->cris_dwarf2_cfi);
}
_("cris_gdbarch_update: failed to update architecture."));
}
+static void
+set_cris_mode (char *ignore_args, int from_tty,
+ struct cmd_list_element *c)
+{
+ struct gdbarch_info info;
+
+ /* Update the current architecture, if needed. */
+ gdbarch_info_init (&info);
+ if (!gdbarch_update_p (info))
+ internal_error (__FILE__, __LINE__,
+ "cris_gdbarch_update: failed to update architecture.");
+}
+
static void
set_cris_dwarf2_cfi (char *ignore_args, int from_tty,
struct cmd_list_element *c)
/* Make the current settings visible to the user. */
usr_cmd_cris_version = cris_version;
- /* Find a candidate among the list of pre-declared architectures. Both
- CRIS version and ABI must match. */
+ /* Find a candidate among the list of pre-declared architectures. */
for (arches = gdbarch_list_lookup_by_info (arches, &info);
arches != NULL;
arches = gdbarch_list_lookup_by_info (arches->next, &info))
{
if ((gdbarch_tdep (arches->gdbarch)->cris_version
== usr_cmd_cris_version)
+ && (gdbarch_tdep (arches->gdbarch)->cris_mode
+ == usr_cmd_cris_mode)
&& (gdbarch_tdep (arches->gdbarch)->cris_dwarf2_cfi
== usr_cmd_cris_dwarf2_cfi))
return arches->gdbarch;
gdbarch = gdbarch_alloc (&info, tdep);
tdep->cris_version = usr_cmd_cris_version;
+ tdep->cris_mode = usr_cmd_cris_mode;
tdep->cris_dwarf2_cfi = usr_cmd_cris_dwarf2_cfi;
/* INIT shall ensure that the INFO.BYTE_ORDER is non-zero. */
frame_unwind_append_sniffer (gdbarch, dwarf2_frame_sniffer);
}
- frame_unwind_append_sniffer (gdbarch, cris_sigtramp_frame_sniffer);
+ if (tdep->cris_mode != cris_mode_guru)
+ {
+ frame_unwind_append_sniffer (gdbarch, cris_sigtramp_frame_sniffer);
+ }
frame_unwind_append_sniffer (gdbarch, cris_frame_sniffer);
frame_base_set_default (gdbarch, &cris_frame_base);