161520dc02
* remote-vx.c: move read_register and write_register out to
target specific files.
* remote-vx29k.c (get_fp_contnets): add this function, from WRS.
188 lines
6.1 KiB
C
188 lines
6.1 KiB
C
/* Am29k-dependent portions of the RPC protocol
|
|
used with a VxWorks target
|
|
|
|
Contributed by Wind River Systems.
|
|
|
|
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., 675 Mass Ave, Cambridge, MA 02139, USA. */
|
|
|
|
#include <stdio.h>
|
|
#include "defs.h"
|
|
|
|
#include "vx-share/regPacket.h"
|
|
#include "frame.h"
|
|
#include "inferior.h"
|
|
#include "wait.h"
|
|
#include "target.h"
|
|
#include "gdbcore.h"
|
|
#include "command.h"
|
|
#include "symtab.h"
|
|
#include "symfile.h" /* for struct complaint */
|
|
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
|
|
#ifdef _AIX /* IBM claims "void *malloc()" not char * */
|
|
#define malloc bogon_malloc
|
|
#endif
|
|
|
|
#include <rpc/rpc.h>
|
|
#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
|
|
#include <netdb.h>
|
|
#include "vx-share/ptrace.h"
|
|
#include "vx-share/xdr_ptrace.h"
|
|
#include "vx-share/xdr_ld.h"
|
|
#include "vx-share/xdr_rdb.h"
|
|
#include "vx-share/dbgRpcLib.h"
|
|
|
|
/* get rid of value.h if possible */
|
|
#include <value.h>
|
|
#include <symtab.h>
|
|
|
|
/* Flag set if target has fpu */
|
|
|
|
extern int target_has_fp;
|
|
|
|
/* Generic register read/write routines in remote-vx.c. */
|
|
|
|
extern void net_read_registers ();
|
|
extern void net_write_registers ();
|
|
|
|
/* Read a register or registers from the VxWorks target.
|
|
REGNO is the register to read, or -1 for all; currently,
|
|
it is ignored. FIXME look at regno to improve efficiency. */
|
|
|
|
void
|
|
vx_read_register (regno)
|
|
int regno;
|
|
{
|
|
char am29k_greg_packet[AM29K_GREG_PLEN];
|
|
char am29k_fpreg_packet[AM29K_FPREG_PLEN];
|
|
|
|
/* Get general-purpose registers. When copying values into
|
|
registers [], don't assume that a location in registers []
|
|
is properly aligned for the target data type. */
|
|
|
|
net_read_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_GETREGS);
|
|
|
|
/* Now copy the register values into registers[].
|
|
Note that this code depends on the ordering of the REGNUMs
|
|
as defined in "tm-29k.h". */
|
|
|
|
bcopy (&am29k_greg_packet[AM29K_R_GR96],
|
|
®isters[REGISTER_BYTE (GR96_REGNUM)], 160 * AM29K_GREG_SIZE);
|
|
bcopy (&am29k_greg_packet[AM29K_R_VAB],
|
|
®isters[REGISTER_BYTE (VAB_REGNUM)], 15 * AM29K_GREG_SIZE);
|
|
registers[REGISTER_BYTE (INTE_REGNUM)] = am29k_greg_packet[AM29K_R_INTE];
|
|
bcopy (&am29k_greg_packet[AM29K_R_RSP],
|
|
®isters[REGISTER_BYTE (GR1_REGNUM)], 5 * AM29K_GREG_SIZE);
|
|
|
|
/* PAD For now, don't care about exop register */
|
|
|
|
memset (®isters[REGISTER_BYTE (EXO_REGNUM)], '\0', AM29K_GREG_SIZE);
|
|
|
|
/* If the target has floating point registers, fetch them.
|
|
Otherwise, zero the floating point register values in
|
|
registers[] for good measure, even though we might not
|
|
need to. */
|
|
|
|
if (target_has_fp)
|
|
{
|
|
net_read_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN,
|
|
PTRACE_GETFPREGS);
|
|
registers[REGISTER_BYTE (FPE_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPE];
|
|
registers[REGISTER_BYTE (FPS_REGNUM)] = am29k_fpreg_packet[AM29K_R_FPS];
|
|
|
|
/* PAD For now, don't care about registers (?) AI0 to q */
|
|
|
|
memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE);
|
|
}
|
|
else
|
|
{
|
|
memset (®isters[REGISTER_BYTE (FPE_REGNUM)], '\0', AM29K_FPREG_SIZE);
|
|
memset (®isters[REGISTER_BYTE (FPS_REGNUM)], '\0', AM29K_FPREG_SIZE);
|
|
|
|
/* PAD For now, don't care about registers (?) AI0 to q */
|
|
|
|
memset (®isters[REGISTER_BYTE (161)], '\0', 21 * AM29K_FPREG_SIZE);
|
|
}
|
|
|
|
/* Mark the register cache valid. */
|
|
|
|
registers_fetched ();
|
|
}
|
|
|
|
/* Store a register or registers into the VxWorks target.
|
|
REGNO is the register to store, or -1 for all; currently,
|
|
it is ignored. FIXME look at regno to improve efficiency. */
|
|
|
|
void
|
|
vx_write_register (regno)
|
|
int regno;
|
|
{
|
|
char am29k_greg_packet[AM29K_GREG_PLEN];
|
|
char am29k_fpreg_packet[AM29K_FPREG_PLEN];
|
|
|
|
/* Store general purpose registers. When copying values from
|
|
registers [], don't assume that a location in registers []
|
|
is properly aligned for the target data type. */
|
|
|
|
bcopy (®isters[REGISTER_BYTE (GR96_REGNUM)],
|
|
&am29k_greg_packet[AM29K_R_GR96], 160 * AM29K_GREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (VAB_REGNUM)],
|
|
&am29k_greg_packet[AM29K_R_VAB], 15 * AM29K_GREG_SIZE);
|
|
am29k_greg_packet[AM29K_R_INTE] = registers[REGISTER_BYTE (INTE_REGNUM)];
|
|
bcopy (®isters[REGISTER_BYTE (GR1_REGNUM)],
|
|
&am29k_greg_packet[AM29K_R_RSP], 5 * AM29K_GREG_SIZE);
|
|
|
|
net_write_registers (am29k_greg_packet, AM29K_GREG_PLEN, PTRACE_SETREGS);
|
|
|
|
/* Store floating point registers if the target has them. */
|
|
|
|
if (target_has_fp)
|
|
{
|
|
am29k_fpreg_packet[AM29K_R_FPE] = registers[REGISTER_BYTE (FPE_REGNUM)];
|
|
am29k_fpreg_packet[AM29K_R_FPS] = registers[REGISTER_BYTE (FPS_REGNUM)];
|
|
|
|
net_write_registers (am29k_fpreg_packet, AM29K_FPREG_PLEN,
|
|
PTRACE_SETFPREGS);
|
|
}
|
|
}
|
|
|
|
/* VxWorks zeroes fp when the task is initialized; we use this
|
|
to terminate the frame chain. Chain means here the nominal address of
|
|
a frame, that is, the return address (lr0) address in the stack. To
|
|
obtain the frame pointer (lr1) contents, we must add 4 bytes.
|
|
Note : may be we should modify init_frame_info() to get the frame pointer
|
|
and store it into the frame_info struct rather than reading its
|
|
contents when FRAME_CHAIN_VALID is invoked. */
|
|
|
|
int
|
|
get_fp_contents (chain, thisframe)
|
|
CORE_ADDR chain;
|
|
struct frame_info *thisframe; /* not used here */
|
|
{
|
|
int fp_contents;
|
|
|
|
read_memory ((CORE_ADDR)(chain + 4), (char *) &fp_contents, 4);
|
|
return (fp_contents != 0);
|
|
}
|
|
|