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Multi-arch CANNOT_FETCH_REGISTER() and CANNOT_STORE_REGISTER().

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This commit is contained in:
Andrew Cagney 2001-06-15 23:50:46 +00:00
parent 22cbd7fb8c
commit 01fb743397
9 changed files with 122 additions and 20 deletions
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11
gdb/ChangeLog
View File

@ -1,3 +1,14 @@
2001-06-15 Andrew Cagney <ac131313@redhat.com>
* gdbarch.sh (CANNOT_FETCH_REGISTER): Multi-arch.
(CANNOT_STORE_REGISTER): Ditto.
* infptrace.c (CANNOT_FETCH_REGISTER): Delete definition.
(CANNOT_STORE_REGISTER): Ditto.
* regcache.c (CANNOT_STORE_REGISTER): Ditto.
* lynx-nat.c (CANNOT_STORE_REGISTER): Ditto.
* arch-utils.h (cannot_register_not): Define.
* arch-utils.c (cannot_register_not): Declare.
2001-06-15 Andrew Cagney <ac131313@redhat.com>
* gdbarch.sh: Clarify pre/post default

6
gdb/arch-utils.c
View File

@ -306,6 +306,12 @@ init_frame_pc_noop (int fromleaf, struct frame_info *prev)
return;
}
int
cannot_register_not (int regnum)
{
return 0;
}
/* Functions to manipulate the endianness of the target. */
#ifdef TARGET_BYTE_ORDER_SELECTABLE

5
gdb/arch-utils.h
View File

@ -115,4 +115,9 @@ extern int generic_prepare_to_proceed (int select_it);
void init_frame_pc_noop (int fromleaf, struct frame_info *prev);
/* Version of cannot_fetch_register() / cannot_store_register() that
always fails. */
int cannot_register_not (int regnum);
#endif

70
gdb/gdbarch.c
View File

@ -176,6 +176,8 @@ struct gdbarch
gdbarch_do_registers_info_ftype *do_registers_info;
gdbarch_register_sim_regno_ftype *register_sim_regno;
gdbarch_register_bytes_ok_ftype *register_bytes_ok;
gdbarch_cannot_fetch_register_ftype *cannot_fetch_register;
gdbarch_cannot_store_register_ftype *cannot_store_register;
int use_generic_dummy_frames;
int call_dummy_location;
gdbarch_call_dummy_address_ftype *call_dummy_address;
@ -332,6 +334,8 @@ struct gdbarch startup_gdbarch =
0,
0,
0,
0,
0,
generic_get_saved_register,
0,
0,
@ -455,6 +459,8 @@ gdbarch_alloc (const struct gdbarch_info *info,
gdbarch->max_register_virtual_size = -1;
gdbarch->do_registers_info = do_registers_info;
gdbarch->register_sim_regno = default_register_sim_regno;
gdbarch->cannot_fetch_register = cannot_register_not;
gdbarch->cannot_store_register = cannot_register_not;
gdbarch->use_generic_dummy_frames = -1;
gdbarch->call_dummy_start_offset = -1;
gdbarch->call_dummy_breakpoint_offset = -1;
@ -602,6 +608,8 @@ verify_gdbarch (struct gdbarch *gdbarch)
/* Skip verify of do_registers_info, invalid_p == 0 */
/* Skip verify of register_sim_regno, invalid_p == 0 */
/* Skip verify of register_bytes_ok, has predicate */
/* Skip verify of cannot_fetch_register, invalid_p == 0 */
/* Skip verify of cannot_store_register, invalid_p == 0 */
if ((GDB_MULTI_ARCH >= 1)
&& (gdbarch->use_generic_dummy_frames == -1))
internal_error (__FILE__, __LINE__,
@ -1042,6 +1050,18 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
"REGISTER_BYTES_OK(nr_bytes)",
XSTRING (REGISTER_BYTES_OK (nr_bytes)));
#endif
#ifdef CANNOT_FETCH_REGISTER
fprintf_unfiltered (file,
"gdbarch_dump: %s # %s\n",
"CANNOT_FETCH_REGISTER(reg_nr)",
XSTRING (CANNOT_FETCH_REGISTER (reg_nr)));
#endif
#ifdef CANNOT_STORE_REGISTER
fprintf_unfiltered (file,
"gdbarch_dump: %s # %s\n",
"CANNOT_STORE_REGISTER(reg_nr)",
XSTRING (CANNOT_STORE_REGISTER (reg_nr)));
#endif
#ifdef USE_GENERIC_DUMMY_FRAMES
fprintf_unfiltered (file,
"gdbarch_dump: USE_GENERIC_DUMMY_FRAMES # %s\n",
@ -1757,6 +1777,20 @@ gdbarch_dump (struct gdbarch *gdbarch, struct ui_file *file)
(long) current_gdbarch->register_bytes_ok
/*REGISTER_BYTES_OK ()*/);
#endif
#ifdef CANNOT_FETCH_REGISTER
if (GDB_MULTI_ARCH)
fprintf_unfiltered (file,
"gdbarch_dump: CANNOT_FETCH_REGISTER = 0x%08lx\n",
(long) current_gdbarch->cannot_fetch_register
/*CANNOT_FETCH_REGISTER ()*/);
#endif
#ifdef CANNOT_STORE_REGISTER
if (GDB_MULTI_ARCH)
fprintf_unfiltered (file,
"gdbarch_dump: CANNOT_STORE_REGISTER = 0x%08lx\n",
(long) current_gdbarch->cannot_store_register
/*CANNOT_STORE_REGISTER ()*/);
#endif
#ifdef USE_GENERIC_DUMMY_FRAMES
fprintf_unfiltered (file,
"gdbarch_dump: USE_GENERIC_DUMMY_FRAMES = %ld\n",
@ -3054,6 +3088,42 @@ set_gdbarch_register_bytes_ok (struct gdbarch *gdbarch,
gdbarch->register_bytes_ok = register_bytes_ok;
}
int
gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int reg_nr)
{
if (gdbarch->cannot_fetch_register == 0)
internal_error (__FILE__, __LINE__,
"gdbarch: gdbarch_cannot_fetch_register invalid");
if (gdbarch_debug >= 2)
fprintf_unfiltered (gdb_stdlog, "gdbarch_cannot_fetch_register called\n");
return gdbarch->cannot_fetch_register (reg_nr);
}
void
set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch,
gdbarch_cannot_fetch_register_ftype cannot_fetch_register)
{
gdbarch->cannot_fetch_register = cannot_fetch_register;
}
int
gdbarch_cannot_store_register (struct gdbarch *gdbarch, int reg_nr)
{
if (gdbarch->cannot_store_register == 0)
internal_error (__FILE__, __LINE__,
"gdbarch: gdbarch_cannot_store_register invalid");
if (gdbarch_debug >= 2)
fprintf_unfiltered (gdb_stdlog, "gdbarch_cannot_store_register called\n");
return gdbarch->cannot_store_register (reg_nr);
}
void
set_gdbarch_cannot_store_register (struct gdbarch *gdbarch,
gdbarch_cannot_store_register_ftype cannot_store_register)
{
gdbarch->cannot_store_register = cannot_store_register;
}
int
gdbarch_use_generic_dummy_frames (struct gdbarch *gdbarch)
{

28
gdb/gdbarch.h
View File

@ -664,6 +664,34 @@ extern void set_gdbarch_register_bytes_ok (struct gdbarch *gdbarch, gdbarch_regi
#endif
#endif
/* Default (function) for non- multi-arch platforms. */
#if (!GDB_MULTI_ARCH) && !defined (CANNOT_FETCH_REGISTER)
#define CANNOT_FETCH_REGISTER(regnum) (cannot_register_not (regnum))
#endif
typedef int (gdbarch_cannot_fetch_register_ftype) (int regnum);
extern int gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, int regnum);
extern void set_gdbarch_cannot_fetch_register (struct gdbarch *gdbarch, gdbarch_cannot_fetch_register_ftype *cannot_fetch_register);
#if GDB_MULTI_ARCH
#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (CANNOT_FETCH_REGISTER)
#define CANNOT_FETCH_REGISTER(regnum) (gdbarch_cannot_fetch_register (current_gdbarch, regnum))
#endif
#endif
/* Default (function) for non- multi-arch platforms. */
#if (!GDB_MULTI_ARCH) && !defined (CANNOT_STORE_REGISTER)
#define CANNOT_STORE_REGISTER(regnum) (cannot_register_not (regnum))
#endif
typedef int (gdbarch_cannot_store_register_ftype) (int regnum);
extern int gdbarch_cannot_store_register (struct gdbarch *gdbarch, int regnum);
extern void set_gdbarch_cannot_store_register (struct gdbarch *gdbarch, gdbarch_cannot_store_register_ftype *cannot_store_register);
#if GDB_MULTI_ARCH
#if (GDB_MULTI_ARCH > GDB_MULTI_ARCH_PARTIAL) || !defined (CANNOT_STORE_REGISTER)
#define CANNOT_STORE_REGISTER(regnum) (gdbarch_cannot_store_register (current_gdbarch, regnum))
#endif
#endif
extern int gdbarch_use_generic_dummy_frames (struct gdbarch *gdbarch);
extern void set_gdbarch_use_generic_dummy_frames (struct gdbarch *gdbarch, int use_generic_dummy_frames);
#if GDB_MULTI_ARCH

2
gdb/gdbarch.sh
View File

@ -429,6 +429,8 @@ f:2:DO_REGISTERS_INFO:void:do_registers_info:int reg_nr, int fpregs:reg_nr, fpre
# also include/...-sim.h.
f:2:REGISTER_SIM_REGNO:int:register_sim_regno:int reg_nr:reg_nr:::default_register_sim_regno::0
F:2:REGISTER_BYTES_OK:int:register_bytes_ok:long nr_bytes:nr_bytes::0:0
f:2:CANNOT_FETCH_REGISTER:int:cannot_fetch_register:int regnum:regnum:::cannot_register_not::0
f:2:CANNOT_STORE_REGISTER:int:cannot_store_register:int regnum:regnum:::cannot_register_not::0
#
v:1:USE_GENERIC_DUMMY_FRAMES:int:use_generic_dummy_frames::::0:-1
v:2:CALL_DUMMY_LOCATION:int:call_dummy_location::::0:0

10
gdb/infptrace.c
View File

@ -349,11 +349,6 @@ _initialize_kernel_u_addr (void)
- KERNEL_U_ADDR
#endif
/* Registers we shouldn't try to fetch. */
#if !defined (CANNOT_FETCH_REGISTER)
#define CANNOT_FETCH_REGISTER(regno) 0
#endif
/* Fetch one register. */
static void
@ -418,11 +413,6 @@ fetch_inferior_registers (int regno)
}
}
/* Registers we shouldn't try to store. */
#if !defined (CANNOT_STORE_REGISTER)
#define CANNOT_STORE_REGISTER(regno) 0
#endif
/* Store one register. */
static void

5
gdb/lynx-nat.c
View File

@ -539,11 +539,6 @@ fetch_inferior_registers (int regno)
If REGNO is -1, do this for all registers.
Otherwise, REGNO specifies which register (so we can save time). */
/* Registers we shouldn't try to store. */
#if !defined (CANNOT_STORE_REGISTER)
#define CANNOT_STORE_REGISTER(regno) 0
#endif
void
store_inferior_registers (int regno)
{

5
gdb/regcache.c
View File

@ -315,11 +315,6 @@ read_register_gen (int regnum, char *buf)
/* Write register REGNUM at MYADDR to the target. MYADDR points at
REGISTER_RAW_BYTES(REGNUM), which must be in target byte-order. */
/* Registers we shouldn't try to store. */
#if !defined (CANNOT_STORE_REGISTER)
#define CANNOT_STORE_REGISTER(regnum) 0
#endif
static void
legacy_write_register_gen (int regnum, char *myaddr)
{