* remote-sim.h: New file.
* remote-sim.c: Add remote debug feature. Rename stuff to distinguish interface to simulator from gdb-specific stuff. Other changes. start-sanitize-v9 * remote-sp64sim.c: Renamed to remote-sim.c. Use sr_get_debug instead of our own sim_verbose/simif_snoop. Use gnutarget in call to bfd_openr. Rename simif_* to gdbsim_*. * config/sparc/sp64sim.mt: Change remote-sp64sim.c to remote-sim.c. end-sanitize-v9
This commit is contained in:
Jim Kingdon
parent
26a08d1529
commit
40b92220c5
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@ -16,7 +16,7 @@
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Do-first:
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if ( echo $* | grep keep\-v9 > /dev/null ) ; then
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keep_these_too="sp64-tdep.c remote-sp64sim.c remote-sim.h"
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keep_these_too="sp64-tdep.c"
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fi
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# All files listed between the "Things-to-keep:" line and the
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@ -193,6 +193,7 @@ remote-mm.c
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remote-mon.c
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remote-nindy.c
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remote-sim.c
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remote-sim.h
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remote-st.c
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remote-udi.c
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remote-utils.c
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@ -1,3 +1,16 @@
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Fri Sep 17 10:10:05 1993 Jim Kingdon (kingdon@rtl.cygnus.com)
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* remote-sim.h: New file.
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* remote-sim.c: Add remote debug feature. Rename stuff to distinguish
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interface to simulator from gdb-specific stuff. Other changes.
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start-sanitize-v9
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* remote-sp64sim.c: Renamed to remote-sim.c.
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Use sr_get_debug instead of our own sim_verbose/simif_snoop.
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Use gnutarget in call to bfd_openr.
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Rename simif_* to gdbsim_*.
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* config/sparc/sp64sim.mt: Change remote-sp64sim.c to remote-sim.c.
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end-sanitize-v9
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Fri Sep 17 04:41:17 1993 Peter Schauer (pes@regent.e-technik.tu-muenchen.de)
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* findvar.c (extract_signed_integer): Cast *p to LONGEST before doing
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@ -7,5 +7,5 @@ CC = gcc
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# Regular "have long long" detection is disabled for now.
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MH_CFLAGS = -DFORCE_LONG_LONG -I${srcdir}/../sim/sp64
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#TDEPFILES= exec.o solib.o sparc-pinsn.o sp64-tdep.o remote-shade.o ../../shade/libsim.a ../../shade/libshade.a ../../shade/libspix.a
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TDEPFILES= exec.o solib.o sparc-pinsn.o sparc-tdep.o sp64-tdep.o remote-sp64sim.o ../sim/sp64/libsim.a
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TDEPFILES= exec.o solib.o sparc-pinsn.o sparc-tdep.o sp64-tdep.o remote-sim.o ../sim/sp64/libsim.a
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TM_FILE= tm-sp64sim.h
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536
gdb/remote-sim.c
536
gdb/remote-sim.c
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@ -1,7 +1,7 @@
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/* Remote debugging interface for generalized simulator
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Copyright 1992 Free Software Foundation, Inc.
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Contributed by Cygnus Support. Written by Steve Chamberlain
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(sac@cygnus.com).
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/* Generic remote debugging interface for simulators.
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Copyright 1993 Free Software Foundation, Inc.
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Contributed by Cygnus Support.
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Steve Chamberlain (sac@cygnus.com) and Doug Evans (dje@cygnus.com).
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This file is part of GDB.
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@ -32,60 +32,147 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
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#include "terminal.h"
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#include "target.h"
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#include "gdbcore.h"
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#include "remote-sim.h"
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/* Naming convention:
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sim_* are the interface to the simulator (see remote-sim.h).
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gdbsim_* are stuff which is internal to gdb. */
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/* Forward data declarations */
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extern struct target_ops sim_ops; /* Forward declaration */
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extern struct target_ops gdbsim_ops;
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int
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sim_write_inferior_memory (memaddr, myaddr, len)
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CORE_ADDR memaddr;
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unsigned char *myaddr;
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static int program_loaded = 0;
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static void
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dump_mem (buf, len)
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char *buf;
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int len;
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{
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return sim_write(memaddr, myaddr, len);
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if (len <= 8)
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{
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if (len == 8 || len == 4)
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{
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long l[2];
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memcpy (l, buf, len);
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printf_filtered ("\t0x%x", l[0]);
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printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
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}
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else
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{
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int i;
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printf_filtered ("\t");
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for (i = 0; i < len; i++)
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printf_filtered ("0x%x ", buf[i]);
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printf_filtered ("\n");
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}
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}
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}
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static void
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store_register(regno)
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gdbsim_fetch_register (regno)
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int regno;
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{
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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gdbsim_fetch_register (regno);
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}
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else
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{
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char buf[MAX_REGISTER_RAW_SIZE];
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sim_fetch_register (regno, buf);
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supply_register (regno, buf);
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if (sr_get_debug ())
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{
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printf_filtered ("gdbsim_fetch_register: %d", regno);
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/* FIXME: We could print something more intelligible. */
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dump_mem (buf, REGISTER_RAW_SIZE (regno));
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}
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}
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}
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static void
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gdbsim_store_register (regno)
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int regno;
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{
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if (regno == -1)
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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store_register(regno);
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}
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else
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{
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sim_store_register(regno, read_register(regno));
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}
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{
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for (regno = 0; regno < NUM_REGS; regno++)
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gdbsim_store_register (regno);
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}
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else
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{
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/* FIXME: Until read_register() returns LONGEST, we have this. */
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char value[MAX_REGISTER_RAW_SIZE];
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read_register_gen (regno, value);
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SWAP_TARGET_AND_HOST (value, REGISTER_RAW_SIZE (regno));
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sim_store_register (regno, value);
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if (sr_get_debug ())
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{
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printf_filtered ("gdbsim_store_register: %d", regno);
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/* FIXME: We could print something more intelligible. */
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dump_mem (value, REGISTER_RAW_SIZE (regno));
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}
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}
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}
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/*
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* Download a file specified in 'args', to the sim.
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*/
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static void
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sim_load(args,fromtty)
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char *args;
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int fromtty;
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gdbsim_kill ()
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{
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if (sr_get_debug ())
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printf_filtered ("gdbsim_kill\n");
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sim_kill (); /* close fd's, remove mappings */
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inferior_pid = 0;
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}
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/* Load an executable file into the target process. This is expected to
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not only bring new code into the target process, but also to update
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GDB's symbol tables to match. */
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static void
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gdbsim_load (prog, fromtty)
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char *prog;
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int fromtty;
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{
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bfd *abfd;
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asection *s;
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if (sr_get_debug ())
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printf_filtered ("gdbsim_load: prog \"%s\"\n", prog);
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inferior_pid = 0;
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abfd = bfd_openr (args, (char*)gnutarget);
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program_loaded = 0;
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abfd = bfd_openr (prog, gnutarget);
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if (!abfd)
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{
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printf_filtered("Unable to open file %s\n", args);
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return;
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}
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error ("Unable to open file %s.", prog);
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if (bfd_check_format(abfd, bfd_object) ==0)
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{
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printf_filtered("File is not an object file\n");
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return ;
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}
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if (bfd_check_format (abfd, bfd_object) == 0)
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error ("File is not an object file.");
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if (sim_load (abfd, prog) != 0)
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return;
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program_loaded = 1;
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sim_set_pc (abfd->start_address);
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}
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/*
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* This is a utility routine that sim_load() can call to do the work.
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* The result is 0 for success, non-zero for failure.
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*
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* Eg: int sim_load (bfd *bfd, char *prog) { return sim_load_standard (bfd); }
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*/
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sim_load_standard (abfd)
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bfd *abfd;
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{
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asection *s;
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s = abfd->sections;
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while (s != (asection *)NULL)
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@ -94,196 +181,291 @@ int fromtty;
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{
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int i;
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int delta = 4096;
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char *buffer = xmalloc(delta);
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printf_filtered("%s\t: 0x%4x .. 0x%4x ",
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char *buffer = xmalloc (delta);
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printf_filtered ("%s\t: 0x%4x .. 0x%4x ",
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s->name, s->vma, s->vma + s->_raw_size);
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for (i = 0; i < s->_raw_size; i+= delta)
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{
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int sub_delta = delta;
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if (sub_delta > s->_raw_size - i)
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sub_delta = s->_raw_size - i ;
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sub_delta = s->_raw_size - i ;
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bfd_get_section_contents(abfd, s, buffer, i, sub_delta);
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sim_write_inferior_memory(s->vma + i, buffer, sub_delta);
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printf_filtered("*");
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fflush(stdout);
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bfd_get_section_contents (abfd, s, buffer, i, sub_delta);
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sim_write (s->vma + i, buffer, sub_delta);
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printf_filtered ("*");
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fflush (stdout);
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}
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printf_filtered( "\n");
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free(buffer);
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printf_filtered ("\n");
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free (buffer);
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}
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s = s->next;
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}
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sim_store_register(PC_REGNUM, abfd->start_address);
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}
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/* This is called not only when we first attach, but also when the
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user types "run" after having attached. */
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void
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sim_create_inferior (execfile, args, env)
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char *execfile;
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char *args;
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char **env;
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{
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int entry_pt;
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if (args && *args)
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error ("Can't pass arguments to remote sim process.");
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if (execfile == 0 || exec_bfd == 0)
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error ("No exec file specified");
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entry_pt = (int) bfd_get_start_address (exec_bfd);
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init_wait_for_inferior ();
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insert_breakpoints ();
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proceed(entry_pt, -1, 0);
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}
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static void
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sim_open (name, from_tty)
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char *name;
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int from_tty;
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||||
{
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if(name == 0)
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{
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name = "";
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}
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push_target (&sim_ops);
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target_fetch_registers(-1);
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printf_filtered("Connected to the simulator.\n");
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}
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||||
|
||||
/* Close out all files and local state before this target loses control. */
|
||||
|
||||
static void
|
||||
sim_close (quitting)
|
||||
int quitting;
|
||||
{
|
||||
}
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||||
|
||||
/* Terminate the open connection to the remote debugger.
|
||||
Use this when you want to detach and do something else
|
||||
with your gdb. */
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||||
void
|
||||
sim_detach (args,from_tty)
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||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
pop_target(); /* calls sim_close to do the real work */
|
||||
if (from_tty)
|
||||
printf_filtered ("Ending remote %s debugging\n", target_shortname);
|
||||
|
||||
}
|
||||
|
||||
/* Tell the remote machine to resume. */
|
||||
|
||||
|
||||
/* Wait until the remote machine stops, then return,
|
||||
storing status in STATUS just as `wait' would. */
|
||||
|
||||
int
|
||||
sim_wait (status)
|
||||
WAITTYPE *status;
|
||||
{
|
||||
WSETSTOP(*status, sim_stop_signal());
|
||||
return 0;
|
||||
}
|
||||
|
||||
static void
|
||||
fetch_register(regno)
|
||||
int regno;
|
||||
{
|
||||
if (regno == -1)
|
||||
{
|
||||
for (regno = 0; regno < NUM_REGS; regno++)
|
||||
fetch_register(regno);
|
||||
}
|
||||
else
|
||||
{
|
||||
char buf[MAX_REGISTER_RAW_SIZE];
|
||||
/* Start an inferior process and set inferior_pid to its pid.
|
||||
EXEC_FILE is the file to run.
|
||||
ALLARGS is a string containing the arguments to the program.
|
||||
ENV is the environment vector to pass. Errors reported with error().
|
||||
On VxWorks and various standalone systems, we ignore exec_file. */
|
||||
/* This is called not only when we first attach, but also when the
|
||||
user types "run" after having attached. */
|
||||
|
||||
sim_fetch_register(regno, buf);
|
||||
supply_register(regno, buf);
|
||||
}
|
||||
static void
|
||||
gdbsim_create_inferior (exec_file, args, env)
|
||||
char *exec_file;
|
||||
char *args;
|
||||
char **env;
|
||||
{
|
||||
int len,entry_pt;
|
||||
char *arg_buf,**argv;
|
||||
|
||||
if (! program_loaded)
|
||||
error ("No program loaded.");
|
||||
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_create_inferior: exec_file \"%s\", args \"%s\"\n",
|
||||
exec_file, args);
|
||||
|
||||
if (exec_file == 0 || exec_bfd == 0)
|
||||
error ("No exec file specified.");
|
||||
|
||||
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
||||
|
||||
gdbsim_kill (NULL, NULL);
|
||||
remove_breakpoints ();
|
||||
init_wait_for_inferior ();
|
||||
|
||||
len = 5 + strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
|
||||
arg_buf = (char *) alloca (len);
|
||||
arg_buf[0] = '\0';
|
||||
strcat (arg_buf, exec_file);
|
||||
strcat (arg_buf, " ");
|
||||
strcat (arg_buf, args);
|
||||
argv = buildargv (arg_buf);
|
||||
make_cleanup (freeargv, (char *) argv);
|
||||
/* FIXME: remote-sim.h says targets that don't support this return
|
||||
non-zero. Perhaps distinguish between "not supported" and other errors?
|
||||
Or maybe that can be the only error. */
|
||||
if (sim_set_args (argv, env) != 0)
|
||||
return;
|
||||
|
||||
inferior_pid = 42;
|
||||
insert_breakpoints (); /* Needed to get correct instruction in cache */
|
||||
proceed (entry_pt, -1, 0);
|
||||
}
|
||||
|
||||
/* The open routine takes the rest of the parameters from the command,
|
||||
and (if successful) pushes a new target onto the stack.
|
||||
Targets should supply this routine, if only to provide an error message. */
|
||||
/* Called when selecting the simulator. EG: (gdb) target sim name. */
|
||||
|
||||
int
|
||||
sim_xfer_inferior_memory(memaddr, myaddr, len, write, target)
|
||||
static void
|
||||
gdbsim_open (args, from_tty)
|
||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_open: args \"%s\"\n", args);
|
||||
|
||||
if (sim_open (args) != 0)
|
||||
{
|
||||
/* FIXME: This is totally bogus. sim_open should have a way to
|
||||
tell us what the error was, so we can tell the user. */
|
||||
error ("Unable to initialize simulator (insufficient memory?).");
|
||||
return;
|
||||
}
|
||||
|
||||
push_target (&gdbsim_ops);
|
||||
target_fetch_registers (-1);
|
||||
|
||||
printf_filtered ("Connected to the simulator.\n");
|
||||
}
|
||||
|
||||
/* Does whatever cleanup is required for a target that we are no longer
|
||||
going to be calling. Argument says whether we are quitting gdb and
|
||||
should not get hung in case of errors, or whether we want a clean
|
||||
termination even if it takes a while. This routine is automatically
|
||||
always called just before a routine is popped off the target stack.
|
||||
Closing file descriptors and freeing memory are typical things it should
|
||||
do. */
|
||||
/* Close out all files and local state before this target loses control. */
|
||||
|
||||
static void
|
||||
gdbsim_close (quitting)
|
||||
int quitting;
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_close: quitting %d\n", quitting);
|
||||
|
||||
program_loaded = 0;
|
||||
|
||||
/* FIXME: Need to call sim_close() to close all files and
|
||||
delete all mappings. */
|
||||
}
|
||||
|
||||
/* Takes a program previously attached to and detaches it.
|
||||
The program may resume execution (some targets do, some don't) and will
|
||||
no longer stop on signals, etc. We better not have left any breakpoints
|
||||
in the program or it'll die when it hits one. ARGS is arguments
|
||||
typed by the user (e.g. a signal to send the process). FROM_TTY
|
||||
says whether to be verbose or not. */
|
||||
/* Terminate the open connection to the remote debugger.
|
||||
Use this when you want to detach and do something else with your gdb. */
|
||||
|
||||
static void
|
||||
gdbsim_detach (args,from_tty)
|
||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_detach: args \"%s\"\n", args);
|
||||
|
||||
pop_target (); /* calls gdbsim_close to do the real work */
|
||||
if (from_tty)
|
||||
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
|
||||
}
|
||||
|
||||
/* Resume execution of the target process. STEP says whether to single-step
|
||||
or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
|
||||
to the target, or zero for no signal. */
|
||||
|
||||
static void
|
||||
gdbsim_resume (pid, step, siggnal)
|
||||
int pid, step, siggnal;
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_resume: step %d, signal %d\n", step, siggnal);
|
||||
|
||||
sim_resume (step, siggnal);
|
||||
}
|
||||
|
||||
/* Wait for inferior process to do something. Return pid of child,
|
||||
or -1 in case of error; store status through argument pointer STATUS,
|
||||
just as `wait' would. */
|
||||
|
||||
static int
|
||||
gdbsim_wait (status)
|
||||
WAITTYPE *status;
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_wait: ");
|
||||
#if 1
|
||||
*status = sim_stop_signal ();
|
||||
#else
|
||||
WSETSTOP (*status, sim_stop_signal ());
|
||||
#endif
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("status %d\n", *status);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Get ready to modify the registers array. On machines which store
|
||||
individual registers, this doesn't need to do anything. On machines
|
||||
which store all the registers in one fell swoop, this makes sure
|
||||
that registers contains all the registers from the program being
|
||||
debugged. */
|
||||
|
||||
static void
|
||||
gdbsim_prepare_to_store ()
|
||||
{
|
||||
/* Do nothing, since we can store individual regs */
|
||||
}
|
||||
|
||||
static int
|
||||
gdbsim_xfer_inferior_memory (memaddr, myaddr, len, write, target)
|
||||
CORE_ADDR memaddr;
|
||||
char *myaddr;
|
||||
int len;
|
||||
int write;
|
||||
struct target_ops *target; /* ignored */
|
||||
{
|
||||
if (! program_loaded)
|
||||
error ("No program loaded.");
|
||||
|
||||
if (sr_get_debug ())
|
||||
{
|
||||
printf_filtered ("gdbsim_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
|
||||
myaddr, memaddr, len, write);
|
||||
if (sr_get_debug () && write)
|
||||
dump_mem(myaddr, len);
|
||||
}
|
||||
|
||||
if (write)
|
||||
{
|
||||
sim_write(memaddr, myaddr, len);
|
||||
}
|
||||
{
|
||||
len = sim_write (memaddr, myaddr, len);
|
||||
}
|
||||
else
|
||||
{
|
||||
sim_read(memaddr, myaddr, len);
|
||||
}
|
||||
{
|
||||
len = sim_read (memaddr, myaddr, len);
|
||||
if (sr_get_debug () && len > 0)
|
||||
dump_mem(myaddr, len);
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
|
||||
/* This routine is run as a hook, just before the main command loop is
|
||||
entered. If gdb is configured for the H8, but has not had its
|
||||
target specified yet, this will loop prompting the user to do so.
|
||||
*/
|
||||
|
||||
void
|
||||
sim_before_main_loop ()
|
||||
static void
|
||||
gdbsim_files_info (target)
|
||||
struct target_ops *target;
|
||||
{
|
||||
push_target (&sim_ops);
|
||||
char *file = "nothing";
|
||||
|
||||
if (exec_bfd)
|
||||
file = bfd_get_filename (exec_bfd);
|
||||
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_files_info: file \"%s\"\n", file);
|
||||
|
||||
if (exec_bfd)
|
||||
{
|
||||
printf_filtered ("\tAttached to %s running program %s\n",
|
||||
target_shortname, file);
|
||||
sim_info ();
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear the sims notion of what the break points are. */
|
||||
|
||||
static void rem_resume(pid, a , b)
|
||||
{
|
||||
sim_resume(a,b);
|
||||
static void
|
||||
gdbsim_mourn_inferior ()
|
||||
{
|
||||
if (sr_get_debug ())
|
||||
printf_filtered ("gdbsim_mourn_inferior:\n");
|
||||
|
||||
remove_breakpoints ();
|
||||
generic_mourn_inferior ();
|
||||
}
|
||||
|
||||
void
|
||||
pstore()
|
||||
{
|
||||
}
|
||||
/* Define the target subroutine names */
|
||||
|
||||
struct target_ops sim_ops =
|
||||
struct target_ops gdbsim_ops =
|
||||
{
|
||||
"sim", "simulator",
|
||||
"Use the simulator",
|
||||
sim_open, sim_close,
|
||||
0, sim_detach, rem_resume, sim_wait, /* attach */
|
||||
fetch_register, store_register,
|
||||
pstore,
|
||||
sim_xfer_inferior_memory,
|
||||
0,
|
||||
0, 0, /* Breakpoints */
|
||||
gdbsim_open, gdbsim_close,
|
||||
0, gdbsim_detach, gdbsim_resume, gdbsim_wait, /* attach */
|
||||
gdbsim_fetch_register, gdbsim_store_register,
|
||||
gdbsim_prepare_to_store,
|
||||
gdbsim_xfer_inferior_memory,
|
||||
gdbsim_files_info,
|
||||
0, 0, /* Breakpoints */
|
||||
0, 0, 0, 0, 0, /* Terminal handling */
|
||||
pstore,
|
||||
sim_load,
|
||||
gdbsim_kill, /* kill */
|
||||
gdbsim_load,
|
||||
0, /* lookup_symbol */
|
||||
sim_create_inferior, /* create_inferior */
|
||||
pstore, /* mourn_inferior FIXME */
|
||||
gdbsim_create_inferior, /* create_inferior */
|
||||
gdbsim_mourn_inferior, /* mourn_inferior */
|
||||
0, /* can_run */
|
||||
0, /* notice_signals */
|
||||
process_stratum, 0, /* next */
|
||||
1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
|
||||
0,0, /* Section pointers */
|
||||
0, 0, /* Section pointers */
|
||||
OPS_MAGIC, /* Always the last thing */
|
||||
};
|
||||
|
||||
/***********************************************************************/
|
||||
|
||||
void
|
||||
_initialize_remote_sim ()
|
||||
{
|
||||
add_target (&sim_ops);
|
||||
add_target (&gdbsim_ops);
|
||||
}
|
||||
|
||||
|
||||
|
|
|
|||
|
|
@ -31,7 +31,10 @@ extern int sim_verbose;
|
|||
/* Initialize the simulator. This function is called when the simulator
|
||||
is selected from the command line. ARGS is passed from the command line
|
||||
and can be used to select whatever run time options the simulator provides.
|
||||
ARGS is the raw character string and must be parsed by the simulator. */
|
||||
ARGS is the raw character string and must be parsed by the simulator.
|
||||
|
||||
Returns 0 for success, non-zero for failure (FIXME: how do we say what
|
||||
kind of failure it was?). */
|
||||
|
||||
int sim_open PARAMS ((char *name));
|
||||
|
||||
|
|
|
|||
|
|
@ -1,493 +0,0 @@
|
|||
/* Generic remote debugging interface for simulators.
|
||||
Copyright 1993 Free Software Foundation, Inc.
|
||||
Contributed by Cygnus Support.
|
||||
Steve Chamberlain (sac@cygnus.com) and Doug Evans (dje@cygnus.com).
|
||||
|
||||
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 "defs.h"
|
||||
#include "inferior.h"
|
||||
#include "wait.h"
|
||||
#include "value.h"
|
||||
#include <string.h>
|
||||
#include <ctype.h>
|
||||
#include <fcntl.h>
|
||||
#include <signal.h>
|
||||
#include <setjmp.h>
|
||||
#include <errno.h>
|
||||
#include "terminal.h"
|
||||
#include "target.h"
|
||||
#include "gdbcore.h"
|
||||
#include "remote-sim.h"
|
||||
|
||||
/* Naming conventions:
|
||||
|
||||
simif_xxx are internal objects that describe top level interfaces to the
|
||||
simulator (simif for SIMulator InterFace, duh...).
|
||||
|
||||
sim_xxx are external counterparts to the simif_xxx objects that must be
|
||||
provided by the simulator.
|
||||
|
||||
See simif.h for a description. */
|
||||
|
||||
/* Forward data declarations */
|
||||
extern struct target_ops simif_ops;
|
||||
|
||||
int sim_verbose = 0; /* available to the simulator to use */
|
||||
|
||||
static int program_loaded = 0;
|
||||
|
||||
static void dump_mem ();
|
||||
|
||||
static void
|
||||
simif_fetch_register (regno)
|
||||
int regno;
|
||||
{
|
||||
if (regno == -1)
|
||||
{
|
||||
for (regno = 0; regno < NUM_REGS; regno++)
|
||||
simif_fetch_register (regno);
|
||||
}
|
||||
else
|
||||
{
|
||||
char buf[MAX_REGISTER_RAW_SIZE];
|
||||
|
||||
sim_fetch_register (regno, buf);
|
||||
supply_register (regno, buf);
|
||||
if (sim_verbose)
|
||||
{
|
||||
printf_filtered ("simif_fetch_register: %d", regno);
|
||||
/* FIXME: We could print something more intelligible. */
|
||||
dump_mem (buf, REGISTER_RAW_SIZE (regno));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
simif_store_register (regno)
|
||||
int regno;
|
||||
{
|
||||
if (regno == -1)
|
||||
{
|
||||
for (regno = 0; regno < NUM_REGS; regno++)
|
||||
simif_store_register (regno);
|
||||
}
|
||||
else
|
||||
{
|
||||
/* FIXME: Until read_register() returns LONGEST, we have this. */
|
||||
char value[MAX_REGISTER_RAW_SIZE];
|
||||
|
||||
read_register_gen (regno, value);
|
||||
SWAP_TARGET_AND_HOST (value, REGISTER_RAW_SIZE (regno));
|
||||
sim_store_register (regno, value);
|
||||
if (sim_verbose)
|
||||
{
|
||||
printf_filtered ("simif_store_register: %d", regno);
|
||||
/* FIXME: We could print something more intelligible. */
|
||||
dump_mem (value, REGISTER_RAW_SIZE (regno));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static void
|
||||
simif_kill ()
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_kill\n");
|
||||
|
||||
sim_kill (); /* close fd's, remove mappings */
|
||||
inferior_pid = 0;
|
||||
}
|
||||
|
||||
/* Load an executable file into the target process. This is expected to
|
||||
not only bring new code into the target process, but also to update
|
||||
GDB's symbol tables to match. */
|
||||
|
||||
static void
|
||||
simif_load (prog, fromtty)
|
||||
char *prog;
|
||||
int fromtty;
|
||||
{
|
||||
bfd *abfd;
|
||||
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_load: prog \"%s\"\n", prog);
|
||||
|
||||
inferior_pid = 0;
|
||||
program_loaded = 0;
|
||||
abfd = bfd_openr (prog, (char *) 0);
|
||||
|
||||
if (!abfd)
|
||||
error ("Unable to open file %s.", prog);
|
||||
|
||||
if (bfd_check_format (abfd, bfd_object) == 0)
|
||||
error ("File is not an object file.");
|
||||
|
||||
if (sim_load (abfd, prog) != 0)
|
||||
return;
|
||||
|
||||
program_loaded = 1;
|
||||
|
||||
sim_set_pc (abfd->start_address);
|
||||
}
|
||||
|
||||
/*
|
||||
* This is a utility routine that sim_load() can call to do the work.
|
||||
* The result is 0 for success, non-zero for failure.
|
||||
*
|
||||
* Eg: int sim_load (bfd *bfd, char *prog) { return sim_load_standard (bfd); }
|
||||
*/
|
||||
|
||||
sim_load_standard (abfd)
|
||||
bfd *abfd;
|
||||
{
|
||||
asection *s;
|
||||
|
||||
s = abfd->sections;
|
||||
while (s != (asection *)NULL)
|
||||
{
|
||||
if (s->flags & SEC_LOAD)
|
||||
{
|
||||
int i;
|
||||
int delta = 4096;
|
||||
char *buffer = xmalloc (delta);
|
||||
printf_filtered ("%s\t: 0x%4x .. 0x%4x ",
|
||||
s->name, s->vma, s->vma + s->_raw_size);
|
||||
for (i = 0; i < s->_raw_size; i+= delta)
|
||||
{
|
||||
int sub_delta = delta;
|
||||
if (sub_delta > s->_raw_size - i)
|
||||
sub_delta = s->_raw_size - i ;
|
||||
|
||||
bfd_get_section_contents (abfd, s, buffer, i, sub_delta);
|
||||
sim_write (s->vma + i, buffer, sub_delta);
|
||||
printf_filtered ("*");
|
||||
fflush (stdout);
|
||||
}
|
||||
printf_filtered ("\n");
|
||||
free (buffer);
|
||||
}
|
||||
s = s->next;
|
||||
}
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Start an inferior process and set inferior_pid to its pid.
|
||||
EXEC_FILE is the file to run.
|
||||
ALLARGS is a string containing the arguments to the program.
|
||||
ENV is the environment vector to pass. Errors reported with error().
|
||||
On VxWorks and various standalone systems, we ignore exec_file. */
|
||||
/* This is called not only when we first attach, but also when the
|
||||
user types "run" after having attached. */
|
||||
|
||||
static void
|
||||
simif_create_inferior (exec_file, args, env)
|
||||
char *exec_file;
|
||||
char *args;
|
||||
char **env;
|
||||
{
|
||||
int len,entry_pt;
|
||||
char *arg_buf,**argv;
|
||||
|
||||
if (! program_loaded)
|
||||
error ("No program loaded.");
|
||||
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_create_inferior: exec_file \"%s\", args \"%s\"\n",
|
||||
exec_file, args);
|
||||
|
||||
if (exec_file == 0 || exec_bfd == 0)
|
||||
error ("No exec file specified.");
|
||||
|
||||
entry_pt = (int) bfd_get_start_address (exec_bfd);
|
||||
|
||||
simif_kill (NULL, NULL);
|
||||
remove_breakpoints ();
|
||||
init_wait_for_inferior ();
|
||||
|
||||
len = 5 + strlen (exec_file) + 1 + strlen (args) + 1 + /*slop*/ 10;
|
||||
arg_buf = (char *) alloca (len);
|
||||
arg_buf[0] = '\0';
|
||||
strcat (arg_buf, exec_file);
|
||||
strcat (arg_buf, " ");
|
||||
strcat (arg_buf, args);
|
||||
argv = buildargv (arg_buf);
|
||||
make_cleanup (freeargv, (char *) argv);
|
||||
/* FIXME: remote-sim.h says targets that don't support this return
|
||||
non-zero. Perhaps distinguish between "not supported" and other errors?
|
||||
Or maybe that can be the only error. */
|
||||
if (sim_set_args (argv, env) != 0)
|
||||
return;
|
||||
|
||||
inferior_pid = 42;
|
||||
insert_breakpoints (); /* Needed to get correct instruction in cache */
|
||||
proceed (entry_pt, -1, 0);
|
||||
}
|
||||
|
||||
/* The open routine takes the rest of the parameters from the command,
|
||||
and (if successful) pushes a new target onto the stack.
|
||||
Targets should supply this routine, if only to provide an error message. */
|
||||
/* Called when selecting the simulator. EG: (gdb) target sim name. */
|
||||
|
||||
static void
|
||||
simif_open (args, from_tty)
|
||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_open: args \"%s\"\n", args);
|
||||
|
||||
if (sim_open (args) != 0)
|
||||
{
|
||||
error ("Unable to initialize simulator (insufficient memory?).");
|
||||
return;
|
||||
}
|
||||
|
||||
push_target (&simif_ops);
|
||||
target_fetch_registers (-1);
|
||||
|
||||
/* FIXME: check from_tty here? */
|
||||
printf_filtered ("Connected to the simulator.\n");
|
||||
}
|
||||
|
||||
/* Does whatever cleanup is required for a target that we are no longer
|
||||
going to be calling. Argument says whether we are quitting gdb and
|
||||
should not get hung in case of errors, or whether we want a clean
|
||||
termination even if it takes a while. This routine is automatically
|
||||
always called just before a routine is popped off the target stack.
|
||||
Closing file descriptors and freeing memory are typical things it should
|
||||
do. */
|
||||
/* Close out all files and local state before this target loses control. */
|
||||
|
||||
static void
|
||||
simif_close (quitting)
|
||||
int quitting;
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_close: quitting %d\n", quitting);
|
||||
|
||||
program_loaded = 0;
|
||||
|
||||
/* FIXME: Need to call sim_close() to close all files and
|
||||
delete all mappings. */
|
||||
}
|
||||
|
||||
/* Takes a program previously attached to and detaches it.
|
||||
The program may resume execution (some targets do, some don't) and will
|
||||
no longer stop on signals, etc. We better not have left any breakpoints
|
||||
in the program or it'll die when it hits one. ARGS is arguments
|
||||
typed by the user (e.g. a signal to send the process). FROM_TTY
|
||||
says whether to be verbose or not. */
|
||||
/* Terminate the open connection to the remote debugger.
|
||||
Use this when you want to detach and do something else with your gdb. */
|
||||
|
||||
static void
|
||||
simif_detach (args,from_tty)
|
||||
char *args;
|
||||
int from_tty;
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_detach: args \"%s\"\n", args);
|
||||
|
||||
pop_target (); /* calls simif_close to do the real work */
|
||||
if (from_tty)
|
||||
printf_filtered ("Ending simulator %s debugging\n", target_shortname);
|
||||
}
|
||||
|
||||
/* Resume execution of the target process. STEP says whether to single-step
|
||||
or to run free; SIGGNAL is the signal value (e.g. SIGINT) to be given
|
||||
to the target, or zero for no signal. */
|
||||
|
||||
static void
|
||||
simif_resume (pid, step, siggnal)
|
||||
int pid, step, siggnal;
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_resume: step %d, signal %d\n", step, siggnal);
|
||||
|
||||
sim_resume (step, siggnal);
|
||||
}
|
||||
|
||||
/* Wait for inferior process to do something. Return pid of child,
|
||||
or -1 in case of error; store status through argument pointer STATUS,
|
||||
just as `wait' would. */
|
||||
|
||||
static int
|
||||
simif_wait (status)
|
||||
WAITTYPE *status;
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_wait: ");
|
||||
#if 1
|
||||
*status = sim_stop_signal ();
|
||||
#else
|
||||
WSETSTOP (*status, sim_stop_signal ());
|
||||
#endif
|
||||
if (sim_verbose)
|
||||
printf_filtered ("status %d\n", *status);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* Get ready to modify the registers array. On machines which store
|
||||
individual registers, this doesn't need to do anything. On machines
|
||||
which store all the registers in one fell swoop, this makes sure
|
||||
that registers contains all the registers from the program being
|
||||
debugged. */
|
||||
|
||||
static void
|
||||
simif_prepare_to_store ()
|
||||
{
|
||||
/* Do nothing, since we can store individual regs */
|
||||
}
|
||||
|
||||
static int
|
||||
simif_xfer_inferior_memory (memaddr, myaddr, len, write, target)
|
||||
CORE_ADDR memaddr;
|
||||
char *myaddr;
|
||||
int len;
|
||||
int write;
|
||||
struct target_ops *target; /* ignored */
|
||||
{
|
||||
if (! program_loaded)
|
||||
error ("No program loaded.");
|
||||
|
||||
if (sim_verbose)
|
||||
{
|
||||
printf_filtered ("simif_xfer_inferior_memory: myaddr 0x%x, memaddr 0x%x, len %d, write %d\n",
|
||||
myaddr, memaddr, len, write);
|
||||
if (sim_verbose && write)
|
||||
dump_mem(myaddr, len);
|
||||
}
|
||||
|
||||
if (write)
|
||||
{
|
||||
len = sim_write (memaddr, myaddr, len);
|
||||
}
|
||||
else
|
||||
{
|
||||
len = sim_read (memaddr, myaddr, len);
|
||||
if (sim_verbose && len > 0)
|
||||
dump_mem(myaddr, len);
|
||||
}
|
||||
return len;
|
||||
}
|
||||
|
||||
static void
|
||||
simif_files_info (target)
|
||||
struct target_ops *target;
|
||||
{
|
||||
char *file = "nothing";
|
||||
|
||||
if (exec_bfd)
|
||||
file = bfd_get_filename (exec_bfd);
|
||||
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_files_info: file \"%s\"\n", file);
|
||||
|
||||
if (exec_bfd)
|
||||
{
|
||||
printf_filtered ("\tAttached to %s running program %s\n",
|
||||
target_shortname, file);
|
||||
sim_info ();
|
||||
}
|
||||
}
|
||||
|
||||
/* Clear the sims notion of what the break points are. */
|
||||
|
||||
static void
|
||||
simif_mourn_inferior ()
|
||||
{
|
||||
if (sim_verbose)
|
||||
printf_filtered ("simif_mourn_inferior:\n");
|
||||
|
||||
remove_breakpoints ();
|
||||
generic_mourn_inferior ();
|
||||
}
|
||||
|
||||
/* Define the target subroutine names */
|
||||
|
||||
struct target_ops simif_ops =
|
||||
{
|
||||
"sim", "simulator",
|
||||
"Use the simulator",
|
||||
simif_open, simif_close,
|
||||
0, simif_detach, simif_resume, simif_wait, /* attach */
|
||||
simif_fetch_register, simif_store_register,
|
||||
simif_prepare_to_store,
|
||||
simif_xfer_inferior_memory,
|
||||
simif_files_info,
|
||||
0, 0, /* Breakpoints */
|
||||
0, 0, 0, 0, 0, /* Terminal handling */
|
||||
simif_kill, /* FIXME, kill */
|
||||
simif_load,
|
||||
0, /* lookup_symbol */
|
||||
simif_create_inferior, /* create_inferior */
|
||||
simif_mourn_inferior, /* mourn_inferior FIXME */
|
||||
0, /* can_run */
|
||||
0, /* notice_signals */
|
||||
process_stratum, 0, /* next */
|
||||
1, 1, 1, 1, 1, /* all mem, mem, stack, regs, exec */
|
||||
0, 0, /* Section pointers */
|
||||
OPS_MAGIC, /* Always the last thing */
|
||||
};
|
||||
|
||||
static void
|
||||
simif_snoop ()
|
||||
{
|
||||
sim_verbose = ! sim_verbose;
|
||||
if (sim_verbose)
|
||||
printf_filtered ("Snoop enabled\n");
|
||||
else
|
||||
printf_filtered ("Snoop disabled\n");
|
||||
|
||||
}
|
||||
|
||||
/***********************************************************************/
|
||||
|
||||
void
|
||||
_initialize_remote_sim ()
|
||||
{
|
||||
add_target (&simif_ops);
|
||||
add_com ("snoop", class_obscure, simif_snoop,
|
||||
"Show what commands are going to the simulator");
|
||||
}
|
||||
|
||||
static void
|
||||
dump_mem (buf, len)
|
||||
char *buf;
|
||||
int len;
|
||||
{
|
||||
if (len <= 8)
|
||||
{
|
||||
if (len == 8 || len == 4)
|
||||
{
|
||||
long l[2];
|
||||
memcpy (l, buf, len);
|
||||
printf_filtered ("\t0x%x", l[0]);
|
||||
printf_filtered (len == 8 ? " 0x%x\n" : "\n", l[1]);
|
||||
}
|
||||
else
|
||||
{
|
||||
int i;
|
||||
printf_filtered ("\t");
|
||||
for (i = 0; i < len; i++)
|
||||
printf_filtered ("0x%x ", buf[i]);
|
||||
printf_filtered ("\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
Loading…
Reference in New Issue