Initial revision

1 files changed, 201 insertions, 0 deletions

diff --git a/gdb/remote-vxmips.c b/gdb/remote-vxmips.c
new file mode 100644
index 00000000000..c65ac015ead
--- /dev/null
+++ b/gdb/remote-vxmips.c
@@ -0,0 +1,201 @@
+/* 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);
+    }
+}