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230 lines
6.5 KiB
C
230 lines
6.5 KiB
C
/* MIPS-dependent portions of the RPC protocol
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used with a VxWorks target
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Contributed by Wind River Systems.
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This file is part of GDB.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include <stdio.h>
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#include "defs.h"
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#include "vx-share/regPacket.h"
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#include "frame.h"
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#include "inferior.h"
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#include "wait.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "command.h"
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#include "symtab.h"
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#include "symfile.h" /* for struct complaint */
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#include <string.h>
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#include <errno.h>
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#include <signal.h>
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#include <fcntl.h>
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#include <sys/types.h>
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#include <sys/time.h>
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#include <sys/socket.h>
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#include <rpc/rpc.h>
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#include <sys/time.h> /* UTek's <rpc/rpc.h> doesn't #incl this */
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#include <netdb.h>
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#include "vx-share/ptrace.h"
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#include "vx-share/xdr_ptrace.h"
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#include "vx-share/xdr_ld.h"
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#include "vx-share/xdr_rdb.h"
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#include "vx-share/dbgRpcLib.h"
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/* get rid of value.h if possible */
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#include <value.h>
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#include <symtab.h>
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/* Flag set if target has fpu */
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extern int target_has_fp;
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/* Generic register read/write routines in remote-vx.c. */
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extern void net_read_registers ();
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extern void net_write_registers ();
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/* Read a register or registers from the VxWorks target.
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REGNO is the register to read, or -1 for all; currently,
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it is ignored. FIXME look at regno to improve efficiency. */
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void
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vx_read_register (regno)
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int regno;
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{
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char mips_greg_packet[MIPS_GREG_PLEN];
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char mips_fpreg_packet[MIPS_FPREG_PLEN];
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/* Get general-purpose registers. */
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net_read_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_GETREGS);
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/* this code copies the registers obtained by RPC
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stored in a structure(s) like this :
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Register(s) Offset(s)
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gp 0-31 0x00
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hi 0x80
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lo 0x84
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sr 0x88
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pc 0x8c
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into a stucture like this:
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0x00 GP 0-31
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0x80 SR
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0x84 LO
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0x88 HI
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0x8C BAD --- Not available currently
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0x90 CAUSE --- Not available currently
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0x94 PC
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0x98 FP 0-31
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0x118 FCSR
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0x11C FIR --- Not available currently
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0x120 FP --- Not available currently
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structure is 0x124 (292) bytes in length */
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/* Copy the general registers. */
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bcopy (&mips_greg_packet[MIPS_R_GP0], ®isters[0], 32 * MIPS_GREG_SIZE);
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/* Copy SR, LO, HI, and PC. */
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bcopy (&mips_greg_packet[MIPS_R_SR],
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®isters[REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE);
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bcopy (&mips_greg_packet[MIPS_R_LO],
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®isters[REGISTER_BYTE (LO_REGNUM)], MIPS_GREG_SIZE);
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bcopy (&mips_greg_packet[MIPS_R_HI],
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®isters[REGISTER_BYTE (HI_REGNUM)], MIPS_GREG_SIZE);
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bcopy (&mips_greg_packet[MIPS_R_PC],
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®isters[REGISTER_BYTE (PC_REGNUM)], MIPS_GREG_SIZE);
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/* If the target has floating point registers, fetch them.
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Otherwise, zero the floating point register values in
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registers[] for good measure, even though we might not
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need to. */
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if (target_has_fp)
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{
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net_read_registers (mips_fpreg_packet, MIPS_FPREG_PLEN,
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PTRACE_GETFPREGS);
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/* Copy the floating point registers. */
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bcopy (&mips_fpreg_packet[MIPS_R_FP0],
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®isters[REGISTER_BYTE (FP0_REGNUM)],
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REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
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/* Copy the floating point control/status register (fpcsr). */
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bcopy (&mips_fpreg_packet[MIPS_R_FPCSR],
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®isters[REGISTER_BYTE (FCRCS_REGNUM)],
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REGISTER_RAW_SIZE (FCRCS_REGNUM));
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}
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else
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{
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bzero ((char *) ®isters[REGISTER_BYTE (FP0_REGNUM)],
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REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
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bzero ((char *) ®isters[REGISTER_BYTE (FCRCS_REGNUM)],
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REGISTER_RAW_SIZE (FCRCS_REGNUM));
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}
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/* Mark the register cache valid. */
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registers_fetched ();
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}
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/* Store a register or registers into the VxWorks target.
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REGNO is the register to store, or -1 for all; currently,
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it is ignored. FIXME look at regno to improve efficiency. */
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vx_write_register (regno)
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int regno;
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{
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char mips_greg_packet[MIPS_GREG_PLEN];
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char mips_fpreg_packet[MIPS_FPREG_PLEN];
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/* Store general registers. */
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bcopy (®isters[0], &mips_greg_packet[MIPS_R_GP0], 32 * MIPS_GREG_SIZE);
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/* Copy SR, LO, HI, and PC. */
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bcopy (®isters[REGISTER_BYTE (PS_REGNUM)],
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&mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE);
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bcopy (®isters[REGISTER_BYTE (LO_REGNUM)],
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&mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE);
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bcopy (®isters[REGISTER_BYTE (HI_REGNUM)],
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&mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE);
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bcopy (®isters[REGISTER_BYTE (PC_REGNUM)],
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&mips_greg_packet[MIPS_R_PC], MIPS_GREG_SIZE);
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net_write_registers (mips_greg_packet, MIPS_GREG_PLEN, PTRACE_SETREGS);
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/* Store floating point registers if the target has them. */
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if (target_has_fp)
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{
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/* Copy the floating point data registers. */
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bcopy (®isters[REGISTER_BYTE (FP0_REGNUM)],
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&mips_fpreg_packet[MIPS_R_FP0],
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REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
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/* Copy the floating point control/status register (fpcsr). */
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bcopy (®isters[REGISTER_BYTE (FCRCS_REGNUM)],
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&mips_fpreg_packet[MIPS_R_FPCSR],
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REGISTER_RAW_SIZE (FCRCS_REGNUM));
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net_write_registers (mips_fpreg_packet, MIPS_FPREG_PLEN,
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PTRACE_SETFPREGS);
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}
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}
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/* Convert from an extended float to a double.
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The extended float is stored as raw data pointed to by FROM.
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Return the converted value as raw data in the double pointed to by TO.
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NOTE: mips uses standard two word doubles. */
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void
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vx_convert_to_virtual (regno, from, to)
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int regno;
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char *from;
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char *to;
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{
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bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
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}
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/* The converse: convert from a double to an extended float.
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The double is stored as raw data pointed to by FROM.
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Return the converted value as raw data in the extended
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float pointed to by TO. */
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void
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vx_convert_from_virtual (regno, from, to)
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int regno;
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char *from;
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char *to;
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{
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bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
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}
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