+++ /dev/null
-/* Remote target communications for the Macraigor Systems BDM Wiggler
- talking to a Motorola PPC 8xx ADS board
- Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2007
- 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., 51 Franklin Street, Fifth Floor,
- Boston, MA 02110-1301, 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 "gdbcmd.h"
-#include "objfiles.h"
-#include "gdb-stabs.h"
-#include <sys/types.h>
-#include "serial.h"
-#include "ocd.h"
-#include "ppc-tdep.h"
-#include "regcache.h"
-#include "gdb_assert.h"
-
-static void bdm_ppc_open (char *name, int from_tty);
-
-static ptid_t bdm_ppc_wait (ptid_t ptid,
- struct target_waitstatus *target_status);
-
-static void bdm_ppc_fetch_registers (int regno);
-
-static void bdm_ppc_store_registers (int regno);
-
-extern struct target_ops bdm_ppc_ops; /* Forward decl */
-\f
-/*#define BDM_NUM_REGS 71 */
-#define BDM_NUM_REGS 24
-
-#define BDM_REGMAP \
- 2048, 2049, 2050, 2051, 2052, 2053, 2054, 2055, /* r0-r7 */ \
- 2056, 2057, 2058, 2059, 2060, 2061, 2062, 2063, /* r8-r15 */ \
- 2064, 2065, 2066, 2067, 2068, 2069, 2070, 2071, /* r16-r23 */ \
- 2072, 2073, 2074, 2075, 2076, 2077, 2078, 2079, /* r24-r31 */ \
-\
- 2080, 2082, 2084, 2086, 2088, 2090, 2092, 2094, /* fp0->fp8 */ \
- 2096, 2098, 2100, 2102, 2104, 2106, 2108, 2110, /* fp0->fp8 */ \
- 2112, 2114, 2116, 2118, 2120, 2122, 2124, 2126, /* fp0->fp8 */ \
- 2128, 2130, 2132, 2134, 2136, 2138, 2140, 2142, /* fp0->fp8 */ \
-\
- 26, /* pc (SRR0 (SPR 26)) */ \
- 2146, /* ps (MSR) */ \
- 2144, /* cnd (CR) */ \
- 8, /* lr (SPR 8) */ \
- 9, /* cnt (CTR (SPR 9)) */ \
- 1, /* xer (SPR 1) */ \
- 0, /* mq (SPR 0) */
-\f
-
-char nowatchdog[4] =
-{0xff, 0xff, 0xff, 0x88};
-
-/* Open a connection to a remote debugger.
- NAME is the filename used for communication. */
-
-static void
-bdm_ppc_open (char *name, int from_tty)
-{
- CORE_ADDR watchdogaddr = 0xff000004;
-
- ocd_open (name, from_tty, OCD_TARGET_MOTO_PPC, &bdm_ppc_ops);
-
- /* We want interrupts to drop us into debugging mode. */
- /* Modify the DER register to accomplish this. */
- ocd_write_bdm_register (149, 0x20024000);
-
- /* Disable watchdog timer on the board */
- ocd_write_bytes (watchdogaddr, nowatchdog, 4);
-}
-
-/* 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 ptid_t
-bdm_ppc_wait (ptid_t ptid, struct target_waitstatus *target_status)
-{
- int stop_reason;
-
- target_status->kind = TARGET_WAITKIND_STOPPED;
-
- stop_reason = ocd_wait ();
-
- if (stop_reason)
- {
- target_status->value.sig = TARGET_SIGNAL_INT;
- return inferior_ptid;
- }
-
- target_status->value.sig = TARGET_SIGNAL_TRAP; /* XXX for now */
-
-#if 0
- {
- unsigned long ecr, der;
-
- ecr = ocd_read_bdm_register (148); /* Read the exception cause register */
- der = ocd_read_bdm_register (149); /* Read the debug enables register */
- fprintf_unfiltered (gdb_stdout, "ecr = 0x%x, der = 0x%x\n", ecr, der);
- }
-#endif
-
- return inferior_ptid;
-}
-\f
-static int bdm_regmap[] =
-{BDM_REGMAP};
-
-/* Read the remote registers into regs.
- Fetch register REGNO, or all registers if REGNO == -1
-
- 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) (IBM PPC 5xx only)
- 2144 CR (known as cnd in GDB)
- 2145 FPCSR
- 2146 MSR (known as ps in GDB)
- */
-
-static void
-bdm_ppc_fetch_registers (int regno)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- 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)
- {
- regcache_raw_supply (current_regcache, first_regno, NULL);
- return; /* Unsupported register */
- }
-
- /* FIXME: jimb/2004-05-04: I'm not sure how to adapt this code to
- processors that lack floating point registers, and I don't have
- have the equipment to test it. So we'll leave that case for the
- next person who encounters it. */
- gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
-
-#if 1
- /* Can't ask for floating point regs on ppc 8xx, also need to
- avoid asking for the mq register. */
- if (first_regno == last_regno) /* only want one reg */
- {
-/* printf("Asking for register %d\n", first_regno); */
-
- /* if asking for an invalid register */
- if ((first_regno == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
- || (first_regno == gdbarch_tdep (current_gdbarch)->ppc_fpscr_regnum)
- || ((first_regno >= tdep->ppc_fp0_regnum)
- && (first_regno < tdep->ppc_fp0_regnum + ppc_num_fprs)))
- {
-/* printf("invalid reg request!\n"); */
- regcache_raw_supply (current_regcache, first_regno, NULL);
- return; /* Unsupported register */
- }
- else
- {
- regs = ocd_read_bdm_registers (first_bdm_regno,
- last_bdm_regno, ®len);
- }
- }
- else
- internal_error (__FILE__, __LINE__,
- _("ppc_bdm_fetch_registers: "
- "'all registers' case not implemented"));
-
-#endif
-#if 0
- regs = ocd_read_bdm_registers (first_bdm_regno, last_bdm_regno, ®len);
-#endif
-
- 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;
-
- regcache_raw_supply (current_regcache, i, regs + 4 * regoffset);
- }
- else
- regcache_raw_supply (current_regcache, 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 (int regno)
-{
- struct gdbarch_tdep *tdep = gdbarch_tdep (current_gdbarch);
- 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 */
-
- /* FIXME: jimb/2004-05-04: I'm not sure how to adapt this code to
- processors that lack floating point registers, and I don't have
- have the equipment to test it. So we'll leave that case for the
- next person who encounters it. */
- gdb_assert (ppc_floating_point_unit_p (current_gdbarch));
-
- for (i = first_regno; i <= last_regno; i++)
- {
- int bdm_regno;
-
- bdm_regno = bdm_regmap[i];
-
- /* only attempt to write if it's a valid ppc 8xx register */
- /* (need to avoid FP regs and MQ reg) */
- if ((i != gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
- && (i != gdbarch_tdep (current_gdbarch)->ppc_fpscr_regnum)
- && ((i < tdep->ppc_fp0_regnum)
- || (i >= tdep->ppc_fp0_regnum + ppc_num_fprs)))
- {
-/* printf("write valid reg %d\n", bdm_regno); */
- ocd_write_bdm_registers (bdm_regno, deprecated_registers + DEPRECATED_REGISTER_BYTE (i), 4);
- }
-/*
- else if (i == gdbarch_tdep (current_gdbarch)->ppc_mq_regnum)
- printf("don't write invalid reg %d (PPC_MQ_REGNUM)\n", bdm_regno);
- else
- printf("don't write invalid reg %d\n", bdm_regno);
- */
- }
-}
-\f
-/* Define the target subroutine names */
-
-struct target_ops bdm_ppc_ops;
-
-static void
-init_bdm_ppc_ops (void)
-{
- bdm_ppc_ops.to_shortname = "ocd";
- bdm_ppc_ops.to_longname = "Remote target with On-Chip Debugging";
- bdm_ppc_ops.to_doc = "Use a remote target with On-Chip Debugging. To use a target box;\n\
-specify the serial device it is connected to (e.g. /dev/ttya). To use\n\
-a wiggler, specify wiggler and then the port it is connected to\n\
-(e.g. wiggler lpt1)."; /* to_doc */
- bdm_ppc_ops.to_open = bdm_ppc_open;
- bdm_ppc_ops.to_close = ocd_close;
- bdm_ppc_ops.to_detach = ocd_detach;
- bdm_ppc_ops.to_resume = ocd_resume;
- bdm_ppc_ops.to_wait = bdm_ppc_wait;
- bdm_ppc_ops.to_fetch_registers = bdm_ppc_fetch_registers;
- bdm_ppc_ops.to_store_registers = bdm_ppc_store_registers;
- bdm_ppc_ops.to_prepare_to_store = ocd_prepare_to_store;
- bdm_ppc_ops.deprecated_xfer_memory = ocd_xfer_memory;
- bdm_ppc_ops.to_files_info = ocd_files_info;
- bdm_ppc_ops.to_insert_breakpoint = ocd_insert_breakpoint;
- bdm_ppc_ops.to_remove_breakpoint = ocd_remove_breakpoint;
- bdm_ppc_ops.to_kill = ocd_kill;
- bdm_ppc_ops.to_load = ocd_load;
- bdm_ppc_ops.to_create_inferior = ocd_create_inferior;
- bdm_ppc_ops.to_mourn_inferior = ocd_mourn;
- bdm_ppc_ops.to_thread_alive = ocd_thread_alive;
- bdm_ppc_ops.to_stop = ocd_stop;
- bdm_ppc_ops.to_stratum = process_stratum;
- bdm_ppc_ops.to_has_all_memory = 1;
- bdm_ppc_ops.to_has_memory = 1;
- bdm_ppc_ops.to_has_stack = 1;
- bdm_ppc_ops.to_has_registers = 1;
- bdm_ppc_ops.to_has_execution = 1;
- bdm_ppc_ops.to_magic = OPS_MAGIC;
-} /* init_bdm_ppc_ops */
-
-extern initialize_file_ftype _initialize_bdm_ppc; /* -Wmissing-prototypes */
-
-void
-_initialize_bdm_ppc (void)
-{
- init_bdm_ppc_ops ();
- add_target (&bdm_ppc_ops);
-}
projects / thirdparty / binutils-gdb.git / blobdiff