Wed Aug 6 16:15:31 1997 Geoffrey Noer <noer@cygnus.com>

        * Makefile.in: add DLLTOOL = @DLLTOOL@, pass on DLLTOOL to
        sub makes, change clean rule to also remove *.a to remove
        libwigglers.a, in dependencies: add ppc-bdm.o ocd.o ser-ocd.o and
        remove remote-wiggler.o
        * configure.in: add DLLTOOL support
        * configure: regenerate
        * wigglers.def: new file for imports for wigglers.dll
        * ser-ocd.c: new file which is layer between ocd.c and either the
        wigglers.dll or the target box, only stub so far
        * config/powerpc/ppc-eabi.mt: add ppc-bdm.o to TDEPFILES
        * config/powerpc/ppc-sim.mt: add ppc-bdm.o to TDEPFILES
        * config/i386/cygwin32.mh: add ocd.o ser-ocd.o libwigglers.a
        to XDEPFILES, add rules to build libwigglers.a

        checking in changes of Stu Grossman  <grossman@cygnus.com>:
        * remote-wiggler.c: delete
        * ocd.c: new, was remote-wiggler.c
        always include sys/types.h, include ocd.h, move WIGGLER
        commands and many wiggler prototypes to ocd.h, make wiggler_desc
        static, stop making local wiggler functions static,
        define write_mem_command for wiggler_write_bytes
        (wiggler_start_remote): stop hardcoding the target type,
        instead set and use a target_type variable.
        (wiggler_open): add new target_type and ops args
        (wiggler_wait): now no longer takes pid and target_status as args,
        stop trying to set target_status struct, remove BGND insn
        checks
        (read_bdm_registers): renamed to wiggler_read_bdm_registers
        (wiggler_read_bdm_registers): numregs arg changed to reglen arg,
        remove pktlen check, set reglen instead of numregs
        (dump_all_bdm_regs): delete
        (wiggler_fetch_registers): delete
        (wiggler_prepare_to_store): now just an empty function
        (wiggler_store_registers): delete
        (wiggler_read_bdm_register): new
        (wiggler_write_bdm_registers): new
        (wiggler_write_bdm_register): new
        (wiggler_write_bytes): use write_mem_command variable instead of
        WIGGLER_WRITE_MEM
        (get_packet): renamed to wiggler_get_packet, change refs throughout
        (put_packet): renamed to wiggler_put_packet, change refs throughout
        (wiggler_get_packet): add break to default case of switch,
        change length of WIGGLER_GET_VERSION len to 10 from 4 to match
        specs
        (wiggler_mourn): unpush_target with current_ops, not &wiggler_ops
        (flash_xfer_memory): delete
        (noop_store_registers): new placeholder replacement for
        target_store_registers() which prevents generic_load from trying to
        set up the PC.
        (bdm_update_flash_command): add store_registers_tmp variable,
        make handling of wiggler_ops more generic -- define wiggler_ops
        in a target-specific file instead (such as ppc-bdm.c in the case
        of the ppc), use current_target to deal with registers again
        making this file less target-specific.
        (bdm_read_register_command): new
        (_initialize_remote_wiggler): stop doing add_target (&wiggler_ops),
        comment out add_cmd ("read-register", ...)
        * ocd.h: new, contains common wiggler prototypes, command definitions
        * ppc-bdm.c: file for ppc-specific OCD code, including target_ops
        structure for ppc bdm
        (bdm_ppc_open): new
        (bdm_ppc_wait): new
        (bdm_ppc_fetch_registers): new
        (bdm_ppc_store_registers_: new
        (_initialize_bdm_ppc): new
	* config/powerpc/tm-ppc-eabi.h: add necessary CPU32 BDM defines

1 files changed, 260 insertions, 0 deletions

diff --git a/gdb/ppc-bdm.c b/gdb/ppc-bdm.c
new file mode 100644
index 0000000..6181298
--- /dev/null
+++ b/gdb/ppc-bdm.c
@@ -0,0 +1,260 @@
+/* Remote target communications for the Macraigor Systems BDM Wiggler
+   talking to a Motorola PPC 505.
+   Copyright 1996, 1997 Free Software Foundation, Inc.
+
+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 "defs.h"
+#include "gdbcore.h"
+#include "gdb_string.h"
+#include <fcntl.h>
+#include "frame.h"
+#include "inferior.h"
+#include "bfd.h"
+#include "symfile.h"
+#include "target.h"
+#include "wait.h"
+#include "gdbcmd.h"
+#include "objfiles.h"
+#include "gdb-stabs.h"
+#include <sys/types.h>
+#include <signal.h>
+#include "serial.h"
+#include "ocd.h"
+
+static void bdm_ppc_open PARAMS ((char *name, int from_tty));
+
+static int bdm_ppc_wait PARAMS ((int pid,
+				 struct target_waitstatus *target_status));
+
+static void bdm_ppc_fetch_registers PARAMS ((int regno));
+
+static void bdm_ppc_store_registers PARAMS ((int regno));
+
+extern struct target_ops bdm_ppc_ops;	/* Forward decl */
+
+/* Open a connection to a remote debugger.
+   NAME is the filename used for communication.  */
+
+static void
+bdm_ppc_open (name, from_tty)
+     char *name;
+     int from_tty;
+{
+  wiggler_open (name, from_tty, WIGGLER_TARGET_MOTO_PPC, &bdm_ppc_ops);
+}
+
+/* Wait until the remote machine stops, then return,
+   storing status in STATUS just as `wait' would.
+   Returns "pid" (though it's not clear what, if anything, that
+   means in the case of this target).  */
+
+static int
+bdm_ppc_wait (pid, target_status)
+     int pid;
+     struct target_waitstatus *target_status;
+{
+  int stop_reason;
+
+  target_status->kind = TARGET_WAITKIND_STOPPED;
+
+  stop_reason = wiggler_wait ();
+
+  if (stop_reason)
+    {
+      target_status->value.sig = TARGET_SIGNAL_INT;
+      return inferior_pid;
+    }
+
+  target_status->value.sig = TARGET_SIGNAL_TRAP; /* XXX for now */
+
+  {
+    unsigned long ecr, der;
+
+    ecr = wiggler_read_bdm_register (148); /* Read the exception cause register */
+    der = wiggler_read_bdm_register (149); /* Read the debug enables register */
+    fprintf_unfiltered (gdb_stdout, "ecr = 0x%x, der = 0x%x\n", ecr, der);
+  }
+
+  return inferior_pid;
+}
+
+static int bdm_regmap[] = {BDM_REGMAP};
+
+/* Read the remote registers into regs.
+
+   The Wiggler uses the following codes to access the registers:
+
+   0 -> 1023		SPR 0 -> 1023
+	0 - SPR 0 - MQ
+	1 - SPR 1 - XER
+	8 - SPR 8 - LR
+	9 - SPR 9 - CTR (known as cnt in GDB)
+	26 - SPR 26 - SRR0 - pc
+   1024 -> 2047		DCR 0 -> DCR 1023 (IBM PPC 4xx only)
+   2048 -> 2079		R0 -> R31
+   2080 -> 2143		FP0 -> FP31 (64 bit regs)
+   2144			CR (known as cnd in GDB)
+   2145			FPCSR
+   2146			MSR (known as ps in GDB)
+ */
+
+static void
+bdm_ppc_fetch_registers (regno)
+     int regno;
+{
+  int i;
+  unsigned char *regs;
+  int first_regno, last_regno;
+  int first_bdm_regno, last_bdm_regno;
+  int reglen;
+
+  if (regno == -1)
+    {
+      first_regno = 0;
+      last_regno = NUM_REGS - 1;
+
+      first_bdm_regno = 0;
+      last_bdm_regno = BDM_NUM_REGS - 1;
+    }
+  else
+    {
+      first_regno = regno;
+      last_regno = regno;
+
+      first_bdm_regno = bdm_regmap [regno];
+      last_bdm_regno = bdm_regmap [regno];
+    }
+
+  if (first_bdm_regno == -1)
+    {
+      supply_register (first_regno, NULL);
+      return;			/* Unsupported register */
+    }
+
+  regs = wiggler_read_bdm_registers (first_bdm_regno, last_bdm_regno, &reglen);
+
+  for (i = first_regno; i <= last_regno; i++)
+    {
+      int bdm_regno, regoffset;
+
+      bdm_regno = bdm_regmap [i];
+      if (bdm_regno != -1)
+	{
+	  regoffset = bdm_regno - first_bdm_regno;
+
+	  if (regoffset >= reglen / 4)
+	    continue;
+
+	  supply_register (i, regs + 4 * regoffset);
+	}
+      else
+	supply_register (i, NULL); /* Unsupported register */
+    }
+}
+
+/* Store register REGNO, or all registers if REGNO == -1, from the contents
+   of REGISTERS.  FIXME: ignores errors.  */
+
+static void
+bdm_ppc_store_registers (regno)
+     int regno;
+{
+  int i;
+  int first_regno, last_regno;
+  int first_bdm_regno, last_bdm_regno;
+
+  if (regno == -1)
+    {
+      first_regno = 0;
+      last_regno = NUM_REGS - 1;
+
+      first_bdm_regno = 0;
+      last_bdm_regno = BDM_NUM_REGS - 1;
+    }
+  else
+    {
+      first_regno = regno;
+      last_regno = regno;
+
+      first_bdm_regno = bdm_regmap [regno];
+      last_bdm_regno = bdm_regmap [regno];
+    }
+
+  if (first_bdm_regno == -1)
+    return;			/* Unsupported register */
+
+  for (i = first_regno; i <= last_regno; i++)
+    {
+      int bdm_regno;
+
+      bdm_regno = bdm_regmap [i];
+
+      wiggler_write_bdm_registers (bdm_regno, registers + REGISTER_BYTE (i), 4);
+    }
+}
+
+/* Define the target subroutine names */
+
+struct target_ops bdm_ppc_ops = {
+  "wiggler",			/* to_shortname */
+  "",				/* to_longname */
+  "",				/* to_doc */
+  bdm_ppc_open,			/* to_open */
+  wiggler_close,		/* to_close */
+  NULL,				/* to_attach */
+  wiggler_detach,		/* to_detach */
+  wiggler_resume,		/* to_resume */
+  bdm_ppc_wait,			/* to_wait */
+  bdm_ppc_fetch_registers,	/* to_fetch_registers */
+  bdm_ppc_store_registers,	/* to_store_registers */
+  wiggler_prepare_to_store,	/* to_prepare_to_store */
+  wiggler_xfer_memory,		/* to_xfer_memory */
+  wiggler_files_info,		/* to_files_info */
+  memory_insert_breakpoint,	/* to_insert_breakpoint */
+  memory_remove_breakpoint,	/* to_remove_breakpoint */
+  NULL,				/* to_terminal_init */
+  NULL,				/* to_terminal_inferior */
+  NULL,				/* to_terminal_ours_for_output */
+  NULL,				/* to_terminal_ours */
+  NULL,				/* to_terminal_info */
+  wiggler_kill,			/* to_kill */
+  wiggler_load,			/* to_load */
+  NULL,				/* to_lookup_symbol */
+  wiggler_create_inferior,	/* to_create_inferior */
+  wiggler_mourn,		/* to_mourn_inferior */
+  0,				/* to_can_run */
+  0,				/* to_notice_signals */
+  wiggler_thread_alive,		/* to_thread_alive */
+  wiggler_stop,			/* to_stop */
+  process_stratum,		/* to_stratum */
+  NULL,				/* to_next */
+  1,				/* to_has_all_memory */
+  1,				/* to_has_memory */
+  1,				/* to_has_stack */
+  1,				/* to_has_registers */
+  1,				/* to_has_execution */
+  NULL,				/* sections */
+  NULL,				/* sections_end */
+  OPS_MAGIC			/* to_magic */
+};
+
+void
+_initialize_bdm_ppc ()
+{
+  add_target (&bdm_ppc_ops);
+}