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authorGeoffrey Noer <noer@cygnus>1997-08-07 06:31:46 +0000
committerGeoffrey Noer <noer@cygnus>1997-08-07 06:31:46 +0000
commit35ce4f08131b8de3b177971297076a3a2609bab5 (patch)
treea10f4618cae75287820133933a6e8486da1df4af /gdb/ppc-bdm.c
parent3d18ed7d46260a9b4e7cf4b4d2b0546427a75d10 (diff)
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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
Diffstat (limited to 'gdb/ppc-bdm.c')
-rw-r--r--gdb/ppc-bdm.c260
1 files changed, 260 insertions, 0 deletions
diff --git a/gdb/ppc-bdm.c b/gdb/ppc-bdm.c
new file mode 100644
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--- /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);
+}