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authorStan Shebs <shebs@apple.com>1999-04-16 01:35:26 +0000
committerStan Shebs <shebs@apple.com>1999-04-16 01:35:26 +0000
commit14cd51f7793a9ce07bc435069f57269450141363 (patch)
tree280a2da48f771d61be5b451ddbacdf9ef8e9ad13 /gdb/remote-vxmips.c
downloadgdb-14cd51f7793a9ce07bc435069f57269450141363.tar.gz
Initial revision
Diffstat (limited to 'gdb/remote-vxmips.c')
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diff --git a/gdb/remote-vxmips.c b/gdb/remote-vxmips.c
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+/* 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], &registers[0], 32 * MIPS_GREG_SIZE);
+
+ /* Copy SR, LO, HI, and PC. */
+
+ bcopy (&mips_greg_packet[MIPS_R_SR],
+ &registers[REGISTER_BYTE (PS_REGNUM)], MIPS_GREG_SIZE);
+ bcopy (&mips_greg_packet[MIPS_R_LO],
+ &registers[REGISTER_BYTE (LO_REGNUM)], MIPS_GREG_SIZE);
+ bcopy (&mips_greg_packet[MIPS_R_HI],
+ &registers[REGISTER_BYTE (HI_REGNUM)], MIPS_GREG_SIZE);
+ bcopy (&mips_greg_packet[MIPS_R_PC],
+ &registers[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],
+ &registers[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],
+ &registers[REGISTER_BYTE (FCRCS_REGNUM)],
+ REGISTER_RAW_SIZE (FCRCS_REGNUM));
+ }
+ else
+ {
+ bzero ((char *) &registers[REGISTER_BYTE (FP0_REGNUM)],
+ REGISTER_RAW_SIZE (FP0_REGNUM) * 32);
+ bzero ((char *) &registers[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 (&registers[0], &mips_greg_packet[MIPS_R_GP0], 32 * MIPS_GREG_SIZE);
+
+ /* Copy SR, LO, HI, and PC. */
+
+ bcopy (&registers[REGISTER_BYTE (PS_REGNUM)],
+ &mips_greg_packet[MIPS_R_SR], MIPS_GREG_SIZE);
+ bcopy (&registers[REGISTER_BYTE (LO_REGNUM)],
+ &mips_greg_packet[MIPS_R_LO], MIPS_GREG_SIZE);
+ bcopy (&registers[REGISTER_BYTE (HI_REGNUM)],
+ &mips_greg_packet[MIPS_R_HI], MIPS_GREG_SIZE);
+ bcopy (&registers[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 (&registers[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 (&registers[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);
+ }
+}