2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
/* Cache and manage the values of registers for GDB, the GNU debugger.
|
|
|
|
Copyright 1986, 87, 89, 91, 94, 95, 96, 1998, 2000
|
|
|
|
Free Software Foundation, Inc.
|
|
|
|
|
|
|
|
This file is part of GDB.
|
|
|
|
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
|
|
it under the terms of the GNU General Public License as published by
|
|
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
|
|
(at your option) any later version.
|
|
|
|
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
|
|
GNU General Public License for more details.
|
|
|
|
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
|
|
along with this program; if not, write to the Free Software
|
|
|
|
Foundation, Inc., 59 Temple Place - Suite 330,
|
|
|
|
Boston, MA 02111-1307, USA. */
|
|
|
|
|
|
|
|
#include "defs.h"
|
|
|
|
#include "frame.h"
|
|
|
|
#include "inferior.h"
|
|
|
|
#include "target.h"
|
|
|
|
#include "gdbarch.h"
|
|
|
|
|
|
|
|
/*
|
|
|
|
* DATA STRUCTURE
|
|
|
|
*
|
|
|
|
* Here is the actual register cache.
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* NOTE: this is a write-back cache. There is no "dirty" bit for
|
|
|
|
recording if the register values have been changed (eg. by the
|
|
|
|
user). Therefore all registers must be written back to the
|
|
|
|
target when appropriate. */
|
|
|
|
|
|
|
|
/* REGISTERS contains the cached register values (in target byte order). */
|
|
|
|
|
|
|
|
char *registers;
|
|
|
|
|
|
|
|
/* REGISTER_VALID is 0 if the register needs to be fetched,
|
|
|
|
1 if it has been fetched, and
|
|
|
|
-1 if the register value was not available.
|
|
|
|
"Not available" means don't try to fetch it again. */
|
|
|
|
|
|
|
|
signed char *register_valid;
|
|
|
|
|
|
|
|
/* The thread/process associated with the current set of registers.
|
|
|
|
For now, -1 is special, and means `no current process'. */
|
|
|
|
|
|
|
|
static int registers_pid = -1;
|
|
|
|
|
|
|
|
/*
|
|
|
|
* FUNCTIONS:
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* REGISTER_CACHED()
|
|
|
|
|
|
|
|
Returns 0 if the value is not in the cache (needs fetch).
|
|
|
|
>0 if the value is in the cache.
|
|
|
|
<0 if the value is permanently unavailable (don't ask again). */
|
|
|
|
|
|
|
|
int
|
|
|
|
register_cached (int regnum)
|
|
|
|
{
|
|
|
|
return register_valid[regnum];
|
|
|
|
}
|
|
|
|
|
2000-08-25 23:03:00 +02:00
|
|
|
/* REGISTER_CHANGED
|
|
|
|
|
|
|
|
invalidate a single register REGNUM in the cache */
|
|
|
|
void
|
|
|
|
register_changed (int regnum)
|
|
|
|
{
|
|
|
|
register_valid[regnum] = 0;
|
|
|
|
}
|
|
|
|
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
/* FIND_SAVED_REGISTER ()
|
|
|
|
|
|
|
|
Return the address in which frame FRAME's value of register REGNUM
|
|
|
|
has been saved in memory. Or return zero if it has not been saved.
|
|
|
|
If REGNUM specifies the SP, the value we return is actually
|
|
|
|
the SP value, not an address where it was saved. */
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
find_saved_register (struct frame_info *frame, int regnum)
|
|
|
|
{
|
|
|
|
register struct frame_info *frame1 = NULL;
|
|
|
|
register CORE_ADDR addr = 0;
|
|
|
|
|
|
|
|
if (frame == NULL) /* No regs saved if want current frame */
|
|
|
|
return 0;
|
|
|
|
|
|
|
|
#ifdef HAVE_REGISTER_WINDOWS
|
|
|
|
/* We assume that a register in a register window will only be saved
|
|
|
|
in one place (since the name changes and/or disappears as you go
|
|
|
|
towards inner frames), so we only call get_frame_saved_regs on
|
|
|
|
the current frame. This is directly in contradiction to the
|
|
|
|
usage below, which assumes that registers used in a frame must be
|
|
|
|
saved in a lower (more interior) frame. This change is a result
|
|
|
|
of working on a register window machine; get_frame_saved_regs
|
|
|
|
always returns the registers saved within a frame, within the
|
|
|
|
context (register namespace) of that frame. */
|
|
|
|
|
|
|
|
/* However, note that we don't want this to return anything if
|
|
|
|
nothing is saved (if there's a frame inside of this one). Also,
|
|
|
|
callers to this routine asking for the stack pointer want the
|
|
|
|
stack pointer saved for *this* frame; this is returned from the
|
|
|
|
next frame. */
|
|
|
|
|
|
|
|
if (REGISTER_IN_WINDOW_P (regnum))
|
|
|
|
{
|
|
|
|
frame1 = get_next_frame (frame);
|
|
|
|
if (!frame1)
|
|
|
|
return 0; /* Registers of this frame are active. */
|
|
|
|
|
|
|
|
/* Get the SP from the next frame in; it will be this
|
|
|
|
current frame. */
|
|
|
|
if (regnum != SP_REGNUM)
|
|
|
|
frame1 = frame;
|
|
|
|
|
|
|
|
FRAME_INIT_SAVED_REGS (frame1);
|
|
|
|
return frame1->saved_regs[regnum]; /* ... which might be zero */
|
|
|
|
}
|
|
|
|
#endif /* HAVE_REGISTER_WINDOWS */
|
|
|
|
|
|
|
|
/* Note that this next routine assumes that registers used in
|
|
|
|
frame x will be saved only in the frame that x calls and
|
|
|
|
frames interior to it. This is not true on the sparc, but the
|
|
|
|
above macro takes care of it, so we should be all right. */
|
|
|
|
while (1)
|
|
|
|
{
|
|
|
|
QUIT;
|
|
|
|
frame1 = get_prev_frame (frame1);
|
|
|
|
if (frame1 == 0 || frame1 == frame)
|
|
|
|
break;
|
|
|
|
FRAME_INIT_SAVED_REGS (frame1);
|
|
|
|
if (frame1->saved_regs[regnum])
|
|
|
|
addr = frame1->saved_regs[regnum];
|
|
|
|
}
|
|
|
|
|
|
|
|
return addr;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* DEFAULT_GET_SAVED_REGISTER ()
|
|
|
|
|
|
|
|
Find register number REGNUM relative to FRAME and put its (raw,
|
|
|
|
target format) contents in *RAW_BUFFER. Set *OPTIMIZED if the
|
|
|
|
variable was optimized out (and thus can't be fetched). Set *LVAL
|
|
|
|
to lval_memory, lval_register, or not_lval, depending on whether
|
|
|
|
the value was fetched from memory, from a register, or in a strange
|
|
|
|
and non-modifiable way (e.g. a frame pointer which was calculated
|
|
|
|
rather than fetched). Set *ADDRP to the address, either in memory
|
|
|
|
on as a REGISTER_BYTE offset into the registers array.
|
|
|
|
|
|
|
|
Note that this implementation never sets *LVAL to not_lval. But
|
|
|
|
it can be replaced by defining GET_SAVED_REGISTER and supplying
|
|
|
|
your own.
|
|
|
|
|
|
|
|
The argument RAW_BUFFER must point to aligned memory. */
|
|
|
|
|
|
|
|
static void
|
|
|
|
default_get_saved_register (char *raw_buffer,
|
|
|
|
int *optimized,
|
|
|
|
CORE_ADDR *addrp,
|
|
|
|
struct frame_info *frame,
|
|
|
|
int regnum,
|
|
|
|
enum lval_type *lval)
|
|
|
|
{
|
|
|
|
CORE_ADDR addr;
|
|
|
|
|
|
|
|
if (!target_has_registers)
|
|
|
|
error ("No registers.");
|
|
|
|
|
|
|
|
/* Normal systems don't optimize out things with register numbers. */
|
|
|
|
if (optimized != NULL)
|
|
|
|
*optimized = 0;
|
|
|
|
addr = find_saved_register (frame, regnum);
|
|
|
|
if (addr != 0)
|
|
|
|
{
|
|
|
|
if (lval != NULL)
|
|
|
|
*lval = lval_memory;
|
|
|
|
if (regnum == SP_REGNUM)
|
|
|
|
{
|
|
|
|
if (raw_buffer != NULL)
|
|
|
|
{
|
|
|
|
/* Put it back in target format. */
|
|
|
|
store_address (raw_buffer, REGISTER_RAW_SIZE (regnum),
|
|
|
|
(LONGEST) addr);
|
|
|
|
}
|
|
|
|
if (addrp != NULL)
|
|
|
|
*addrp = 0;
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
if (raw_buffer != NULL)
|
|
|
|
target_read_memory (addr, raw_buffer, REGISTER_RAW_SIZE (regnum));
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
if (lval != NULL)
|
|
|
|
*lval = lval_register;
|
|
|
|
addr = REGISTER_BYTE (regnum);
|
|
|
|
if (raw_buffer != NULL)
|
|
|
|
read_register_gen (regnum, raw_buffer);
|
|
|
|
}
|
|
|
|
if (addrp != NULL)
|
|
|
|
*addrp = addr;
|
|
|
|
}
|
|
|
|
|
2000-08-11 21:09:55 +02:00
|
|
|
#if !defined (GET_SAVED_REGISTER)
|
|
|
|
#define GET_SAVED_REGISTER(raw_buffer, optimized, addrp, frame, regnum, lval) \
|
|
|
|
default_get_saved_register(raw_buffer, optimized, addrp, frame, regnum, lval)
|
|
|
|
#endif
|
|
|
|
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
void
|
|
|
|
get_saved_register (char *raw_buffer,
|
|
|
|
int *optimized,
|
|
|
|
CORE_ADDR *addrp,
|
|
|
|
struct frame_info *frame,
|
|
|
|
int regnum,
|
|
|
|
enum lval_type *lval)
|
|
|
|
{
|
|
|
|
GET_SAVED_REGISTER (raw_buffer, optimized, addrp, frame, regnum, lval);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* READ_RELATIVE_REGISTER_RAW_BYTES_FOR_FRAME
|
|
|
|
|
|
|
|
Copy the bytes of register REGNUM, relative to the input stack frame,
|
|
|
|
into our memory at MYADDR, in target byte order.
|
|
|
|
The number of bytes copied is REGISTER_RAW_SIZE (REGNUM).
|
|
|
|
|
|
|
|
Returns 1 if could not be read, 0 if could. */
|
|
|
|
|
|
|
|
/* FIXME: This function increases the confusion between FP_REGNUM
|
|
|
|
and the virtual/pseudo-frame pointer. */
|
|
|
|
|
|
|
|
static int
|
|
|
|
read_relative_register_raw_bytes_for_frame (int regnum,
|
|
|
|
char *myaddr,
|
|
|
|
struct frame_info *frame)
|
|
|
|
{
|
|
|
|
int optim;
|
|
|
|
if (regnum == FP_REGNUM && frame)
|
|
|
|
{
|
|
|
|
/* Put it back in target format. */
|
|
|
|
store_address (myaddr, REGISTER_RAW_SIZE (FP_REGNUM),
|
|
|
|
(LONGEST) FRAME_FP (frame));
|
|
|
|
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
get_saved_register (myaddr, &optim, (CORE_ADDR *) NULL, frame,
|
|
|
|
regnum, (enum lval_type *) NULL);
|
|
|
|
|
|
|
|
if (register_valid[regnum] < 0)
|
|
|
|
return 1; /* register value not available */
|
|
|
|
|
|
|
|
return optim;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* READ_RELATIVE_REGISTER_RAW_BYTES
|
|
|
|
|
|
|
|
Copy the bytes of register REGNUM, relative to the current stack
|
|
|
|
frame, into our memory at MYADDR, in target byte order.
|
|
|
|
The number of bytes copied is REGISTER_RAW_SIZE (REGNUM).
|
|
|
|
|
|
|
|
Returns 1 if could not be read, 0 if could. */
|
|
|
|
|
|
|
|
int
|
|
|
|
read_relative_register_raw_bytes (int regnum, char *myaddr)
|
|
|
|
{
|
|
|
|
return read_relative_register_raw_bytes_for_frame (regnum, myaddr,
|
|
|
|
selected_frame);
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Low level examining and depositing of registers.
|
|
|
|
|
|
|
|
The caller is responsible for making sure that the inferior is
|
|
|
|
stopped before calling the fetching routines, or it will get
|
|
|
|
garbage. (a change from GDB version 3, in which the caller got the
|
|
|
|
value from the last stop). */
|
|
|
|
|
|
|
|
/* REGISTERS_CHANGED ()
|
|
|
|
|
|
|
|
Indicate that registers may have changed, so invalidate the cache. */
|
|
|
|
|
|
|
|
void
|
|
|
|
registers_changed (void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
|
|
|
registers_pid = -1;
|
|
|
|
|
|
|
|
/* Force cleanup of any alloca areas if using C alloca instead of
|
|
|
|
a builtin alloca. This particular call is used to clean up
|
|
|
|
areas allocated by low level target code which may build up
|
|
|
|
during lengthy interactions between gdb and the target before
|
|
|
|
gdb gives control to the user (ie watchpoints). */
|
|
|
|
alloca (0);
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
for (i = 0; i < ARCH_NUM_REGS; i++)
|
|
|
|
register_valid[i] = 0;
|
|
|
|
|
|
|
|
/* Assume that if all the hardware regs have changed,
|
|
|
|
then so have the pseudo-registers. */
|
|
|
|
for (i = NUM_REGS; i < NUM_REGS + NUM_PSEUDO_REGS; i++)
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
register_valid[i] = 0;
|
|
|
|
|
|
|
|
if (registers_changed_hook)
|
|
|
|
registers_changed_hook ();
|
|
|
|
}
|
|
|
|
|
|
|
|
/* REGISTERS_FETCHED ()
|
|
|
|
|
|
|
|
Indicate that all registers have been fetched, so mark them all valid. */
|
|
|
|
|
|
|
|
|
|
|
|
void
|
|
|
|
registers_fetched (void)
|
|
|
|
{
|
|
|
|
int i;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
for (i = 0; i < ARCH_NUM_REGS; i++)
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
register_valid[i] = 1;
|
2000-07-13 00:01:17 +02:00
|
|
|
/* Do not assume that the pseudo-regs have also been fetched.
|
|
|
|
Fetching all real regs might not account for all pseudo-regs. */
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* read_register_bytes and write_register_bytes are generally a *BAD*
|
|
|
|
idea. They are inefficient because they need to check for partial
|
|
|
|
updates, which can only be done by scanning through all of the
|
|
|
|
registers and seeing if the bytes that are being read/written fall
|
|
|
|
inside of an invalid register. [The main reason this is necessary
|
|
|
|
is that register sizes can vary, so a simple index won't suffice.]
|
|
|
|
It is far better to call read_register_gen and write_register_gen
|
|
|
|
if you want to get at the raw register contents, as it only takes a
|
|
|
|
regno as an argument, and therefore can't do a partial register
|
|
|
|
update.
|
|
|
|
|
|
|
|
Prior to the recent fixes to check for partial updates, both read
|
|
|
|
and write_register_bytes always checked to see if any registers
|
|
|
|
were stale, and then called target_fetch_registers (-1) to update
|
|
|
|
the whole set. This caused really slowed things down for remote
|
|
|
|
targets. */
|
|
|
|
|
|
|
|
/* Copy INLEN bytes of consecutive data from registers
|
|
|
|
starting with the INREGBYTE'th byte of register data
|
|
|
|
into memory at MYADDR. */
|
|
|
|
|
|
|
|
void
|
|
|
|
read_register_bytes (int inregbyte, char *myaddr, int inlen)
|
|
|
|
{
|
|
|
|
int inregend = inregbyte + inlen;
|
|
|
|
int regno;
|
|
|
|
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* See if we are trying to read bytes from out-of-date registers. If so,
|
|
|
|
update just those registers. */
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
for (regno = 0; regno < NUM_REGS + NUM_PSEUDO_REGS; regno++)
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
{
|
|
|
|
int regstart, regend;
|
|
|
|
|
|
|
|
if (register_valid[regno])
|
|
|
|
continue;
|
|
|
|
|
|
|
|
if (REGISTER_NAME (regno) == NULL || *REGISTER_NAME (regno) == '\0')
|
|
|
|
continue;
|
|
|
|
|
|
|
|
regstart = REGISTER_BYTE (regno);
|
|
|
|
regend = regstart + REGISTER_RAW_SIZE (regno);
|
|
|
|
|
|
|
|
if (regend <= inregbyte || inregend <= regstart)
|
|
|
|
/* The range the user wants to read doesn't overlap with regno. */
|
|
|
|
continue;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
/* We've found an uncached register where at least one byte will be read.
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
Update it from the target. */
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_fetch_registers (regno);
|
2000-07-22 00:25:52 +02:00
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
FETCH_PSEUDO_REGISTER (regno);
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
|
|
|
|
if (!register_valid[regno])
|
|
|
|
error ("read_register_bytes: Couldn't update register %d.", regno);
|
|
|
|
}
|
|
|
|
|
|
|
|
if (myaddr != NULL)
|
|
|
|
memcpy (myaddr, ®isters[inregbyte], inlen);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Read register REGNO into memory at MYADDR, which must be large
|
|
|
|
enough for REGISTER_RAW_BYTES (REGNO). Target byte-order. If the
|
|
|
|
register is known to be the size of a CORE_ADDR or smaller,
|
|
|
|
read_register can be used instead. */
|
|
|
|
|
|
|
|
void
|
|
|
|
read_register_gen (int regno, char *myaddr)
|
|
|
|
{
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!register_valid[regno])
|
2000-07-13 00:01:17 +02:00
|
|
|
{
|
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_fetch_registers (regno);
|
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
FETCH_PSEUDO_REGISTER (regno);
|
2000-07-13 00:01:17 +02:00
|
|
|
}
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
memcpy (myaddr, ®isters[REGISTER_BYTE (regno)],
|
|
|
|
REGISTER_RAW_SIZE (regno));
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Write register REGNO at MYADDR to the target. MYADDR points at
|
|
|
|
REGISTER_RAW_BYTES(REGNO), which must be in target byte-order. */
|
|
|
|
|
|
|
|
/* Registers we shouldn't try to store. */
|
|
|
|
#if !defined (CANNOT_STORE_REGISTER)
|
|
|
|
#define CANNOT_STORE_REGISTER(regno) 0
|
|
|
|
#endif
|
|
|
|
|
|
|
|
void
|
|
|
|
write_register_gen (int regno, char *myaddr)
|
|
|
|
{
|
|
|
|
int size;
|
|
|
|
|
|
|
|
/* On the sparc, writing %g0 is a no-op, so we don't even want to
|
|
|
|
change the registers array if something writes to this register. */
|
|
|
|
if (CANNOT_STORE_REGISTER (regno))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = REGISTER_RAW_SIZE (regno);
|
|
|
|
|
|
|
|
/* If we have a valid copy of the register, and new value == old value,
|
|
|
|
then don't bother doing the actual store. */
|
|
|
|
|
|
|
|
if (register_valid[regno]
|
|
|
|
&& memcmp (®isters[REGISTER_BYTE (regno)], myaddr, size) == 0)
|
|
|
|
return;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_prepare_to_store ();
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
|
|
|
|
memcpy (®isters[REGISTER_BYTE (regno)], myaddr, size);
|
|
|
|
|
|
|
|
register_valid[regno] = 1;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_store_registers (regno);
|
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
STORE_PSEUDO_REGISTER (regno);
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
/* Copy INLEN bytes of consecutive data from memory at MYADDR
|
|
|
|
into registers starting with the MYREGSTART'th byte of register data. */
|
|
|
|
|
|
|
|
void
|
|
|
|
write_register_bytes (int myregstart, char *myaddr, int inlen)
|
|
|
|
{
|
|
|
|
int myregend = myregstart + inlen;
|
|
|
|
int regno;
|
|
|
|
|
|
|
|
target_prepare_to_store ();
|
|
|
|
|
|
|
|
/* Scan through the registers updating any that are covered by the
|
|
|
|
range myregstart<=>myregend using write_register_gen, which does
|
|
|
|
nice things like handling threads, and avoiding updates when the
|
|
|
|
new and old contents are the same. */
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
for (regno = 0; regno < NUM_REGS + NUM_PSEUDO_REGS; regno++)
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
{
|
|
|
|
int regstart, regend;
|
|
|
|
|
|
|
|
regstart = REGISTER_BYTE (regno);
|
|
|
|
regend = regstart + REGISTER_RAW_SIZE (regno);
|
|
|
|
|
|
|
|
/* Is this register completely outside the range the user is writing? */
|
|
|
|
if (myregend <= regstart || regend <= myregstart)
|
|
|
|
/* do nothing */ ;
|
|
|
|
|
|
|
|
/* Is this register completely within the range the user is writing? */
|
|
|
|
else if (myregstart <= regstart && regend <= myregend)
|
|
|
|
write_register_gen (regno, myaddr + (regstart - myregstart));
|
|
|
|
|
|
|
|
/* The register partially overlaps the range being written. */
|
|
|
|
else
|
|
|
|
{
|
|
|
|
char regbuf[MAX_REGISTER_RAW_SIZE];
|
|
|
|
/* What's the overlap between this register's bytes and
|
|
|
|
those the caller wants to write? */
|
|
|
|
int overlapstart = max (regstart, myregstart);
|
|
|
|
int overlapend = min (regend, myregend);
|
|
|
|
|
|
|
|
/* We may be doing a partial update of an invalid register.
|
|
|
|
Update it from the target before scribbling on it. */
|
|
|
|
read_register_gen (regno, regbuf);
|
|
|
|
|
|
|
|
memcpy (registers + overlapstart,
|
|
|
|
myaddr + (overlapstart - myregstart),
|
|
|
|
overlapend - overlapstart);
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_store_registers (regno);
|
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
STORE_PSEUDO_REGISTER (regno);
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/* Return the raw contents of register REGNO, regarding it as an
|
2000-07-11 07:42:25 +02:00
|
|
|
UNSIGNED integer. */
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
|
2000-07-11 07:42:25 +02:00
|
|
|
ULONGEST
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
read_register (int regno)
|
|
|
|
{
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!register_valid[regno])
|
2000-07-13 00:01:17 +02:00
|
|
|
{
|
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_fetch_registers (regno);
|
2000-07-22 00:25:52 +02:00
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
FETCH_PSEUDO_REGISTER (regno);
|
2000-07-13 00:01:17 +02:00
|
|
|
}
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
|
2000-07-11 07:42:25 +02:00
|
|
|
return (extract_unsigned_integer (®isters[REGISTER_BYTE (regno)],
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
REGISTER_RAW_SIZE (regno)));
|
|
|
|
}
|
|
|
|
|
2000-07-11 07:42:25 +02:00
|
|
|
ULONGEST
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
read_register_pid (int regno, int pid)
|
|
|
|
{
|
|
|
|
int save_pid;
|
|
|
|
CORE_ADDR retval;
|
|
|
|
|
|
|
|
if (pid == inferior_pid)
|
|
|
|
return read_register (regno);
|
|
|
|
|
|
|
|
save_pid = inferior_pid;
|
|
|
|
|
|
|
|
inferior_pid = pid;
|
|
|
|
|
|
|
|
retval = read_register (regno);
|
|
|
|
|
|
|
|
inferior_pid = save_pid;
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2000-07-11 07:42:25 +02:00
|
|
|
/* Return the raw contents of register REGNO, regarding it a SIGNED
|
|
|
|
integer. */
|
|
|
|
|
|
|
|
LONGEST
|
|
|
|
read_signed_register (int regno)
|
|
|
|
{
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!register_valid[regno])
|
|
|
|
target_fetch_registers (regno);
|
|
|
|
|
|
|
|
return (extract_signed_integer (®isters[REGISTER_BYTE (regno)],
|
|
|
|
REGISTER_RAW_SIZE (regno)));
|
|
|
|
}
|
|
|
|
|
|
|
|
LONGEST
|
|
|
|
read_signed_register_pid (int regno, int pid)
|
|
|
|
{
|
|
|
|
int save_pid;
|
|
|
|
LONGEST retval;
|
|
|
|
|
|
|
|
if (pid == inferior_pid)
|
|
|
|
return read_signed_register (regno);
|
|
|
|
|
|
|
|
save_pid = inferior_pid;
|
|
|
|
|
|
|
|
inferior_pid = pid;
|
|
|
|
|
|
|
|
retval = read_signed_register (regno);
|
|
|
|
|
|
|
|
inferior_pid = save_pid;
|
|
|
|
|
|
|
|
return retval;
|
|
|
|
}
|
|
|
|
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
/* Store VALUE, into the raw contents of register number REGNO. */
|
|
|
|
|
|
|
|
void
|
|
|
|
write_register (int regno, LONGEST val)
|
|
|
|
{
|
|
|
|
PTR buf;
|
|
|
|
int size;
|
|
|
|
|
|
|
|
/* On the sparc, writing %g0 is a no-op, so we don't even want to
|
|
|
|
change the registers array if something writes to this register. */
|
|
|
|
if (CANNOT_STORE_REGISTER (regno))
|
|
|
|
return;
|
|
|
|
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
size = REGISTER_RAW_SIZE (regno);
|
|
|
|
buf = alloca (size);
|
|
|
|
store_signed_integer (buf, size, (LONGEST) val);
|
|
|
|
|
|
|
|
/* If we have a valid copy of the register, and new value == old value,
|
|
|
|
then don't bother doing the actual store. */
|
|
|
|
|
|
|
|
if (register_valid[regno]
|
|
|
|
&& memcmp (®isters[REGISTER_BYTE (regno)], buf, size) == 0)
|
|
|
|
return;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_prepare_to_store ();
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
|
|
|
|
memcpy (®isters[REGISTER_BYTE (regno)], buf, size);
|
|
|
|
|
|
|
|
register_valid[regno] = 1;
|
|
|
|
|
2000-07-13 00:01:17 +02:00
|
|
|
if (regno < NUM_REGS)
|
|
|
|
target_store_registers (regno);
|
|
|
|
else if (regno < NUM_REGS + NUM_PSEUDO_REGS)
|
2000-07-24 16:35:14 +02:00
|
|
|
STORE_PSEUDO_REGISTER (regno);
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write_register_pid (int regno, CORE_ADDR val, int pid)
|
|
|
|
{
|
|
|
|
int save_pid;
|
|
|
|
|
|
|
|
if (pid == inferior_pid)
|
|
|
|
{
|
|
|
|
write_register (regno, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
save_pid = inferior_pid;
|
|
|
|
|
|
|
|
inferior_pid = pid;
|
|
|
|
|
|
|
|
write_register (regno, val);
|
|
|
|
|
|
|
|
inferior_pid = save_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* SUPPLY_REGISTER()
|
|
|
|
|
|
|
|
Record that register REGNO contains VAL. This is used when the
|
|
|
|
value is obtained from the inferior or core dump, so there is no
|
|
|
|
need to store the value there.
|
|
|
|
|
|
|
|
If VAL is a NULL pointer, then it's probably an unsupported register.
|
|
|
|
We just set it's value to all zeros. We might want to record this
|
|
|
|
fact, and report it to the users of read_register and friends. */
|
|
|
|
|
|
|
|
void
|
|
|
|
supply_register (int regno, char *val)
|
|
|
|
{
|
|
|
|
#if 1
|
|
|
|
if (registers_pid != inferior_pid)
|
|
|
|
{
|
|
|
|
registers_changed ();
|
|
|
|
registers_pid = inferior_pid;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
register_valid[regno] = 1;
|
|
|
|
if (val)
|
|
|
|
memcpy (®isters[REGISTER_BYTE (regno)], val,
|
|
|
|
REGISTER_RAW_SIZE (regno));
|
|
|
|
else
|
|
|
|
memset (®isters[REGISTER_BYTE (regno)], '\000',
|
|
|
|
REGISTER_RAW_SIZE (regno));
|
|
|
|
|
|
|
|
/* On some architectures, e.g. HPPA, there are a few stray bits in
|
|
|
|
some registers, that the rest of the code would like to ignore. */
|
|
|
|
|
|
|
|
#ifdef CLEAN_UP_REGISTER_VALUE
|
|
|
|
CLEAN_UP_REGISTER_VALUE (regno, ®isters[REGISTER_BYTE (regno)]);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
/* read_pc, write_pc, read_sp, write_sp, read_fp, write_fp, etc.
|
|
|
|
Special handling for registers PC, SP, and FP. */
|
|
|
|
|
|
|
|
/* This routine is getting awfully cluttered with #if's. It's probably
|
|
|
|
time to turn this into READ_PC and define it in the tm.h file.
|
|
|
|
Ditto for write_pc.
|
|
|
|
|
|
|
|
1999-06-08: The following were re-written so that it assumes the
|
|
|
|
existance of a TARGET_READ_PC et.al. macro. A default generic
|
|
|
|
version of that macro is made available where needed.
|
|
|
|
|
|
|
|
Since the ``TARGET_READ_PC'' et.al. macro is going to be controlled
|
|
|
|
by the multi-arch framework, it will eventually be possible to
|
|
|
|
eliminate the intermediate read_pc_pid(). The client would call
|
|
|
|
TARGET_READ_PC directly. (cagney). */
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
generic_target_read_pc (int pid)
|
|
|
|
{
|
|
|
|
#ifdef PC_REGNUM
|
|
|
|
if (PC_REGNUM >= 0)
|
|
|
|
{
|
|
|
|
CORE_ADDR pc_val = ADDR_BITS_REMOVE ((CORE_ADDR) read_register_pid (PC_REGNUM, pid));
|
|
|
|
return pc_val;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
internal_error ("generic_target_read_pc");
|
|
|
|
return 0;
|
|
|
|
}
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
read_pc_pid (int pid)
|
|
|
|
{
|
|
|
|
int saved_inferior_pid;
|
|
|
|
CORE_ADDR pc_val;
|
|
|
|
|
|
|
|
/* In case pid != inferior_pid. */
|
|
|
|
saved_inferior_pid = inferior_pid;
|
|
|
|
inferior_pid = pid;
|
|
|
|
|
|
|
|
pc_val = TARGET_READ_PC (pid);
|
|
|
|
|
|
|
|
inferior_pid = saved_inferior_pid;
|
|
|
|
return pc_val;
|
|
|
|
}
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
read_pc (void)
|
|
|
|
{
|
|
|
|
return read_pc_pid (inferior_pid);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
generic_target_write_pc (CORE_ADDR pc, int pid)
|
|
|
|
{
|
|
|
|
#ifdef PC_REGNUM
|
|
|
|
if (PC_REGNUM >= 0)
|
|
|
|
write_register_pid (PC_REGNUM, pc, pid);
|
|
|
|
if (NPC_REGNUM >= 0)
|
|
|
|
write_register_pid (NPC_REGNUM, pc + 4, pid);
|
|
|
|
if (NNPC_REGNUM >= 0)
|
|
|
|
write_register_pid (NNPC_REGNUM, pc + 8, pid);
|
|
|
|
#else
|
|
|
|
internal_error ("generic_target_write_pc");
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write_pc_pid (CORE_ADDR pc, int pid)
|
|
|
|
{
|
|
|
|
int saved_inferior_pid;
|
|
|
|
|
|
|
|
/* In case pid != inferior_pid. */
|
|
|
|
saved_inferior_pid = inferior_pid;
|
|
|
|
inferior_pid = pid;
|
|
|
|
|
|
|
|
TARGET_WRITE_PC (pc, pid);
|
|
|
|
|
|
|
|
inferior_pid = saved_inferior_pid;
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write_pc (CORE_ADDR pc)
|
|
|
|
{
|
|
|
|
write_pc_pid (pc, inferior_pid);
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Cope with strage ways of getting to the stack and frame pointers */
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
generic_target_read_sp (void)
|
|
|
|
{
|
|
|
|
#ifdef SP_REGNUM
|
|
|
|
if (SP_REGNUM >= 0)
|
|
|
|
return read_register (SP_REGNUM);
|
|
|
|
#endif
|
|
|
|
internal_error ("generic_target_read_sp");
|
|
|
|
}
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
read_sp (void)
|
|
|
|
{
|
|
|
|
return TARGET_READ_SP ();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
generic_target_write_sp (CORE_ADDR val)
|
|
|
|
{
|
|
|
|
#ifdef SP_REGNUM
|
|
|
|
if (SP_REGNUM >= 0)
|
|
|
|
{
|
|
|
|
write_register (SP_REGNUM, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
internal_error ("generic_target_write_sp");
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write_sp (CORE_ADDR val)
|
|
|
|
{
|
|
|
|
TARGET_WRITE_SP (val);
|
|
|
|
}
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
generic_target_read_fp (void)
|
|
|
|
{
|
|
|
|
#ifdef FP_REGNUM
|
|
|
|
if (FP_REGNUM >= 0)
|
|
|
|
return read_register (FP_REGNUM);
|
|
|
|
#endif
|
|
|
|
internal_error ("generic_target_read_fp");
|
|
|
|
}
|
|
|
|
|
|
|
|
CORE_ADDR
|
|
|
|
read_fp (void)
|
|
|
|
{
|
|
|
|
return TARGET_READ_FP ();
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
generic_target_write_fp (CORE_ADDR val)
|
|
|
|
{
|
|
|
|
#ifdef FP_REGNUM
|
|
|
|
if (FP_REGNUM >= 0)
|
|
|
|
{
|
|
|
|
write_register (FP_REGNUM, val);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
internal_error ("generic_target_write_fp");
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
write_fp (CORE_ADDR val)
|
|
|
|
{
|
|
|
|
TARGET_WRITE_FP (val);
|
|
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
|
|
build_regcache (void)
|
|
|
|
{
|
|
|
|
/* We allocate some extra slop since we do a lot of memcpy's around
|
|
|
|
`registers', and failing-soft is better than failing hard. */
|
|
|
|
int sizeof_registers = REGISTER_BYTES + /* SLOP */ 256;
|
2000-07-13 00:01:17 +02:00
|
|
|
int sizeof_register_valid =
|
|
|
|
(NUM_REGS + NUM_PSEUDO_REGS) * sizeof (*register_valid);
|
2000-07-07 Michael Snyder <msnyder@cleaver.cygnus.com>
* findvar.c (_initialize_findvar, build_findvar, write_fp, read_fp,
generic_target_write_fp, generic_target_read_fp, write_sp, read_sp,
generic_target_write_sp, generic_target_read_sp, write_pc, read_pc,
generic_target_write_pc, generic_target_read_pc, write_pc_pid,
read_pc_pid, supply_register, write_register_pid, write_register,
read_register_pid, read_register, write_register_bytes,
read_register_bytes, write_register_gen, read_register_gen,
registers_fetched, registers_changed, find_saved_register,
read_relative_register_raw_bytes, default_get_saved_register,
read_relative_register_raw_bytes_for_frame, get_saved_register):
Move from this file into new file regcache.c.
(register_valid, registers_pid, registers): Ditto.
* regcache.c: New file to hold the register cache.
(register_cached): New function to read register_valid array.
* value.h (register_cached): Declare.
* defs.h (default_get_saved_register): Delete decl of static function.
* Makefile.in: Add regcache module.
2000-07-10 08:16:51 +02:00
|
|
|
registers = xmalloc (sizeof_registers);
|
|
|
|
memset (registers, 0, sizeof_registers);
|
|
|
|
register_valid = xmalloc (sizeof_register_valid);
|
|
|
|
memset (register_valid, 0, sizeof_register_valid);
|
|
|
|
}
|
|
|
|
|
|
|
|
void
|
|
|
|
_initialize_regcache (void)
|
|
|
|
{
|
|
|
|
build_regcache ();
|
|
|
|
|
|
|
|
register_gdbarch_swap (®isters, sizeof (registers), NULL);
|
|
|
|
register_gdbarch_swap (®ister_valid, sizeof (register_valid), NULL);
|
|
|
|
register_gdbarch_swap (NULL, 0, build_regcache);
|
|
|
|
}
|