229 lines
6.5 KiB
C
229 lines
6.5 KiB
C
/* MIPS-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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, 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 "gdb_string.h"
|
|
#include <errno.h>
|
|
#include <signal.h>
|
|
#include <fcntl.h>
|
|
#include <sys/types.h>
|
|
#include <sys/time.h>
|
|
#include <sys/socket.h>
|
|
#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 mips_greg_packet[MIPS_GREG_PLEN];
|
|
char mips_fpreg_packet[MIPS_FPREG_PLEN];
|
|
|
|
/* Get general-purpose registers. */
|
|
|
|
net_read_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_GETREGS);
|
|
|
|
/* this code copies the registers obtained by RPC
|
|
stored in a structure(s) like this :
|
|
|
|
Register(s) Offset(s)
|
|
gp 0-31 0x00
|
|
hi 0x80
|
|
lo 0x84
|
|
sr 0x88
|
|
pc 0x8c
|
|
|
|
into a stucture like this:
|
|
|
|
0x00 GP 0-31
|
|
0x80 SR
|
|
0x84 LO
|
|
0x88 HI
|
|
0x8C BAD --- Not available currently
|
|
0x90 CAUSE --- Not available currently
|
|
0x94 PC
|
|
0x98 FP 0-31
|
|
0x118 FCSR
|
|
0x11C FIR --- Not available currently
|
|
0x120 FP --- Not available currently
|
|
|
|
structure is 0x124 (292) bytes in length */
|
|
|
|
/* Copy the general registers. */
|
|
|
|
bcopy (&mips_greg_packet[MIPS_R_GP0], ®isters[0], 32 * MIPS_GREG_SIZE);
|
|
|
|
/* Copy SR, LO, HI, and PC. */
|
|
|
|
bcopy (&mips_greg_packet[MIPS_R_SR],
|
|
®isters[REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE);
|
|
bcopy (&mips_greg_packet[MIPS_R_LO],
|
|
®isters[REGISTER_BYTE (LO_REGNUM)], MIPS_GREG_SIZE);
|
|
bcopy (&mips_greg_packet[MIPS_R_HI],
|
|
®isters[REGISTER_BYTE (HI_REGNUM)], MIPS_GREG_SIZE);
|
|
bcopy (&mips_greg_packet[MIPS_R_PC],
|
|
®isters[REGISTER_BYTE (PC_REGNUM)], MIPS_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 (mips_fpreg_packet, MIPS_FPREG_PLEN,
|
|
PTRACE_GETFPREGS);
|
|
|
|
/* Copy the floating point registers. */
|
|
|
|
bcopy (&mips_fpreg_packet[MIPS_R_FP0],
|
|
®isters[REGISTER_BYTE (FP0_REGNUM)],
|
|
REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
|
|
|
|
/* Copy the floating point control/status register (fpcsr). */
|
|
|
|
bcopy (&mips_fpreg_packet[MIPS_R_FPCSR],
|
|
®isters[REGISTER_BYTE (FCRCS_REGNUM)],
|
|
REGISTER_RAW_SIZE (FCRCS_REGNUM));
|
|
}
|
|
else
|
|
{
|
|
bzero ((char *) ®isters[REGISTER_BYTE (FP0_REGNUM)],
|
|
REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
|
|
bzero ((char *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)],
|
|
REGISTER_RAW_SIZE (FCRCS_REGNUM));
|
|
}
|
|
|
|
/* 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. */
|
|
|
|
vx_write_register (regno)
|
|
int regno;
|
|
{
|
|
char mips_greg_packet[MIPS_GREG_PLEN];
|
|
char mips_fpreg_packet[MIPS_FPREG_PLEN];
|
|
|
|
/* Store general registers. */
|
|
|
|
bcopy (®isters[0], &mips_greg_packet[MIPS_R_GP0], 32 * MIPS_GREG_SIZE);
|
|
|
|
/* Copy SR, LO, HI, and PC. */
|
|
|
|
bcopy (®isters[REGISTER_BYTE (PS_REGNUM)],
|
|
&mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (LO_REGNUM)],
|
|
&mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (HI_REGNUM)],
|
|
&mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE);
|
|
bcopy (®isters[REGISTER_BYTE (PC_REGNUM)],
|
|
&mips_greg_packet[MIPS_R_PC], MIPS_GREG_SIZE);
|
|
|
|
net_write_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_SETREGS);
|
|
|
|
/* Store floating point registers if the target has them. */
|
|
|
|
if (target_has_fp)
|
|
{
|
|
/* Copy the floating point data registers. */
|
|
|
|
bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],
|
|
&mips_fpreg_packet[MIPS_R_FP0],
|
|
REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
|
|
|
|
/* Copy the floating point control/status register (fpcsr). */
|
|
|
|
bcopy (®isters[REGISTER_BYTE (FCRCS_REGNUM)],
|
|
&mips_fpreg_packet[MIPS_R_FPCSR],
|
|
REGISTER_RAW_SIZE (FCRCS_REGNUM));
|
|
|
|
net_write_registers (mips_fpreg_packet, MIPS_FPREG_PLEN,
|
|
PTRACE_SETFPREGS);
|
|
}
|
|
}
|
|
|
|
/* Convert from an extended float to a double.
|
|
The extended float is stored as raw data pointed to by FROM.
|
|
Return the converted value as raw data in the double pointed to by TO.
|
|
NOTE: mips uses standard two word doubles. */
|
|
|
|
void
|
|
vx_convert_to_virtual (regno, from, to)
|
|
int regno;
|
|
char *from;
|
|
char *to;
|
|
{
|
|
bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
|
|
}
|
|
|
|
/* The converse: convert from a double to an extended float.
|
|
The double is stored as raw data pointed to by FROM.
|
|
Return the converted value as raw data in the extended
|
|
float pointed to by TO. */
|
|
|
|
void
|
|
vx_convert_from_virtual (regno, from, to)
|
|
int regno;
|
|
char *from;
|
|
char *to;
|
|
{
|
|
bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
|
|
}
|