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authorKung Hsu <kung@cygnus>1995-04-13 20:03:52 +0000
committerKung Hsu <kung@cygnus>1995-04-13 20:03:52 +0000
commit9c92940ac4eb2f445e1d67f0552b522a1bb6f9b8 (patch)
tree783e54795ec5bc93cb9cdc10405ea119387c7541 /gdb/remote-vxsparc.c
parent546e6a3955339d4841cedfde83d1b5603f00c3cd (diff)
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* remote-vxsparc.c: New file, preliminary check in, this configuration
not supported yet. * remote-vxmips.c: ditto.
Diffstat (limited to 'gdb/remote-vxsparc.c')
-rw-r--r--gdb/remote-vxsparc.c239
1 files changed, 239 insertions, 0 deletions
diff --git a/gdb/remote-vxsparc.c b/gdb/remote-vxsparc.c
new file mode 100644
index 0000000..fef7125
--- /dev/null
+++ b/gdb/remote-vxsparc.c
@@ -0,0 +1,239 @@
+/* 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., 675 Mass Ave, Cambridge, MA 02139, 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 <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);
+ }
+}
+
+/* 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. */
+
+void
+vx_convert_to_virtual (regno, from, to)
+ int regno;
+ char *from;
+ char *to;
+{
+ if (REGISTER_CONVERTIBLE (regno))
+ {
+ if (target_has_fp)
+ ieee_extended_to_double (&ext_format_sparc, from, to);
+ else
+ bzero (to, sizeof (double));
+ }
+ else
+ 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;
+{
+ if (REGISTER_CONVERTIBLE (regno))
+ {
+ if (target_has_fp)
+ double_to_ieee_extended (&ext_format_sparc, from, to);
+ else
+ bzero (to, REGISTER_RAW_SIZE (FP0_REGNUM));
+ }
+ else
+ bcopy (from, to, REGISTER_VIRTUAL_SIZE (regno));
+}