Initial creation of sourceware repositorygdb-4_18-branchpoint

1 files changed, 196 insertions, 0 deletions

diff --git a/gdb/remote-vxsparc.c b/gdb/remote-vxsparc.c
new file mode 100644
index 0000000..0682542
--- /dev/null
+++ b/gdb/remote-vxsparc.c
@@ -0,0 +1,196 @@
+/* sparc-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>
+
+#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;
+
+/* sparc floating point format descriptor, from "sparc-tdep.c."  */
+
+extern struct ext_format ext_format_sparc;
+
+/* 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 sparc_greg_packet[SPARC_GREG_PLEN];
+  char sparc_fpreg_packet[SPARC_FPREG_PLEN];
+  CORE_ADDR sp;
+
+  /* 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 (sparc_greg_packet, SPARC_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-sparc.h".  */
+
+  bcopy (&sparc_greg_packet[SPARC_R_G0],
+	 &registers[REGISTER_BYTE (G0_REGNUM)], 32 * SPARC_GREG_SIZE);
+  bcopy (&sparc_greg_packet[SPARC_R_Y],
+	 &registers[REGISTER_BYTE (Y_REGNUM)], 6 * SPARC_GREG_SIZE);
+
+  /* Now write the local and in registers to the register window
+     spill area in the frame.  VxWorks does not do this for the
+     active frame automatically; it greatly simplifies debugging
+     (FRAME_FIND_SAVED_REGS, in particular, depends on this).  */
+
+  sp = extract_address (&registers[REGISTER_BYTE (SP_REGNUM)], 
+	REGISTER_RAW_SIZE (CORE_ADDR));
+  write_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
+		16 * REGISTER_RAW_SIZE (L0_REGNUM));
+
+  /* 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 (sparc_fpreg_packet, SPARC_FPREG_PLEN,
+                          PTRACE_GETFPREGS);
+      bcopy (&sparc_fpreg_packet[SPARC_R_FP0], 
+             &registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
+      bcopy (&sparc_fpreg_packet[SPARC_R_FSR],
+	     &registers[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_FPREG_SIZE);
+    }
+  else
+    { 
+      bzero (&registers[REGISTER_BYTE (FP0_REGNUM)], 32 * SPARC_FPREG_SIZE);
+      bzero (&registers[REGISTER_BYTE (FPS_REGNUM)], 1 * SPARC_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 sparc_greg_packet[SPARC_GREG_PLEN];
+  char sparc_fpreg_packet[SPARC_FPREG_PLEN];
+  int in_gp_regs;
+  int in_fp_regs;
+  CORE_ADDR sp;
+
+  /* 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.  */
+
+  in_gp_regs = 1;
+  in_fp_regs = 1;
+  if (regno >= 0)
+    {
+      if ((G0_REGNUM <= regno && regno <= I7_REGNUM)
+          || (Y_REGNUM <= regno && regno <= NPC_REGNUM))
+	in_fp_regs = 0;
+      else
+	in_gp_regs = 0;
+    }
+  if (in_gp_regs)
+    {
+      bcopy (&registers[REGISTER_BYTE (G0_REGNUM)],
+	     &sparc_greg_packet[SPARC_R_G0], 32 * SPARC_GREG_SIZE);
+      bcopy (&registers[REGISTER_BYTE (Y_REGNUM)],
+	     &sparc_greg_packet[SPARC_R_Y], 6 * SPARC_GREG_SIZE);
+
+      net_write_registers (sparc_greg_packet, SPARC_GREG_PLEN, PTRACE_SETREGS);
+
+      /* If this is a local or in register, or we're storing all
+         registers, update the register window spill area.  */
+
+      if (regno < 0 || (L0_REGNUM <= regno && regno <= I7_REGNUM))
+        {
+  	  sp = extract_address (&registers[REGISTER_BYTE (SP_REGNUM)], 
+		REGISTER_RAW_SIZE (CORE_ADDR));
+	  write_memory (sp, &registers[REGISTER_BYTE (L0_REGNUM)],
+			16 * REGISTER_RAW_SIZE (L0_REGNUM));
+	}
+    }
+
+  /* Store floating point registers if the target has them.  */
+
+  if (in_fp_regs && target_has_fp)
+    {
+      bcopy (&registers[REGISTER_BYTE (FP0_REGNUM)], 
+	     &sparc_fpreg_packet[SPARC_R_FP0], 32 * SPARC_FPREG_SIZE);
+      bcopy (&registers[REGISTER_BYTE (FPS_REGNUM)], 
+	     &sparc_fpreg_packet[SPARC_R_FSR], 1 * SPARC_FPREG_SIZE);
+
+      net_write_registers (sparc_fpreg_packet, SPARC_FPREG_PLEN,
+                           PTRACE_SETFPREGS);
+    }
+}