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2005-05-13 Orjan Friberg <orjanf@axis.com>

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* cris-tdep.c (usr_cmd_cris_version): Change type to int.
	(cris_mode_normal, cris_mode_guru, cris_modes, usr_cmd_cris_mode): Add.
	(struct gdbarch_tdep): Change type of cris_version to int.  Add
	cris_mode.
	(cris_mode, set_cris_mode): New functions.
	(crisv32_single_step_through_delay): Read from NRP register instead
	of ERP register in guru mode.
	(cris_breakpoint_from_pc): Rename break_insn to break8_insn.
	Add break15_insn, returned in guru mode.
	(_initialize_cris_tdep): Add call to add_setshow_enum_cmd for new
	cris-mode setting.
	(cris_dump_tdep): Add dump of cris_mode.
	(cris_gdbarch_init): Add cris_mode to search criteria for architecture.
	Register the sigtramp frame sniffer only if not in guru mode.
This commit is contained in:
Orjan Friberg 2005-05-13 12:26:54 +00:00
parent c09b15a991
commit 0e6bdb3176
2 changed files with 89 additions and 9 deletions
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17
gdb/ChangeLog
View File

@ -1,3 +1,20 @@
2005-05-13 Orjan Friberg <orjanf@axis.com>
* cris-tdep.c (usr_cmd_cris_version): Change type to int.
(cris_mode_normal, cris_mode_guru, cris_modes, usr_cmd_cris_mode): Add.
(struct gdbarch_tdep): Change type of cris_version to int. Add
cris_mode.
(cris_mode, set_cris_mode): New functions.
(crisv32_single_step_through_delay): Read from NRP register instead
of ERP register in guru mode.
(cris_breakpoint_from_pc): Rename break_insn to break8_insn.
Add break15_insn, returned in guru mode.
(_initialize_cris_tdep): Add call to add_setshow_enum_cmd for new
cris-mode setting.
(cris_dump_tdep): Add dump of cris_mode.
(cris_gdbarch_init): Add cris_mode to search criteria for architecture.
Register the sigtramp frame sniffer only if not in guru mode.
2005-05-13 Eli Zaretskii <eliz@gnu.org>
* Makefile.in (go32-nat.o): Add $(top_h) to prerequisites.

81
gdb/cris-tdep.c
View File

@ -146,19 +146,32 @@ enum cris_regnums
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;
};
@ -170,6 +183,12 @@ cris_version (void)
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 */
@ -456,7 +475,15 @@ crisv32_single_step_through_delay (struct gdbarch *gdbarch,
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)
@ -687,6 +714,9 @@ static void cris_dump_tdep (struct gdbarch *, struct ui_file *);
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);
@ -1394,10 +1424,14 @@ cris_unwind_sp (struct gdbarch *gdbarch, struct frame_info *next_frame)
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,
@ -3922,6 +3956,15 @@ _initialize_cris_tdep (void)
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 if autodetection fails."),
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,
@ -3945,6 +3988,8 @@ cris_dump_tdep (struct gdbarch *gdbarch, struct ui_file *file)
{
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);
}
@ -3965,6 +4010,19 @@ set_cris_version (char *ignore_args, int from_tty,
_("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)
@ -4003,14 +4061,15 @@ cris_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
/* 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;
@ -4021,6 +4080,7 @@ cris_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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. */
@ -4137,7 +4197,10 @@ cris_gdbarch_init (struct gdbarch_info info, struct gdbarch_list *arches)
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);