FreeChainXenon/binutils-gdb
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Fri Mar 20 14:45:36 1998 Michael Snyder <msnyder@cleaver.cygnus.com>

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* gdbserver/Makefile.in: add dependency on XM_CLIBS.
        * gdbserver/low-sim.c (registers) force into alignment.
        (create_inferior): Fix typo on new_argv; add abfd arg to
        sim_open, sim_create_inferior.  Add reg_size arg to
        sim_fetch_register, sim_store_register.  Make simulator
        take a single-step to get into a known running state.
        * gdbserver/gdbreplay.c: include fcntl.h for def'n of F_SETFL.
        * gdbserver/server.c: Add remote_debug variable to control
        debug output.
        * gdbserver/server.h: Add prototypes for enable/disable_async_io.
        * gdbserver/remote-utils.c: add verbose debugging output controlled
        by "remote_debug" variable.  Add call to "disable_async_io()"
        to avoid being killed by async SIGIO signals.
        * config/m32r/m32r.mt: define GDBSERVER_(LIBS and DEPFILES),
        so that gdbserver can be built with the m32r simulator.
This commit is contained in:
Michael Snyder 1998-03-20 23:33:28 +00:00
parent 25957cb064
commit d1732185ee
4 changed files with 282 additions and 107 deletions
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56
gdb/gdbserver/low-sim.c
View file

@ -23,9 +23,11 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "callback.h" /* GDB simulator callback interface */
#include "remote-sim.h" /* GDB simulator interface */
extern int remote_debug;
extern host_callback default_callback; /* in sim/common/callback.c */
char registers[REGISTER_BYTES];
char registers[REGISTER_BYTES] __attribute__ ((aligned));
int target_byte_order; /* used by simulator */
@ -52,28 +54,28 @@ generic_load (loadfile_bfd)
if (size > 0)
{
char *buffer;
bfd_vma vma;
bfd_vma lma; /* use load address, not virtual address */
buffer = xmalloc (size);
vma = bfd_get_section_vma (loadfile_bfd, s);
lma = s->lma;
/* Is this really necessary? I guess it gives the user something
to look at during a long download. */
fprintf (stderr, "Loading section %s, size 0x%lx vma 0x%lx\n",
bfd_get_section_name (loadfile_bfd, s),
(unsigned long) size,
(unsigned long) vma); /* chops high 32 bits. FIXME!! */
printf ("Loading section %s, size 0x%lx lma 0x%lx\n",
bfd_get_section_name (loadfile_bfd, s),
(unsigned long) size,
(unsigned long) lma); /* chops high 32 bits. FIXME!! */
bfd_get_section_contents (loadfile_bfd, s, buffer, 0, size);
write_inferior_memory (vma, buffer, size);
write_inferior_memory (lma, buffer, size);
free (buffer);
}
}
}
fprintf (stderr, "Start address 0x%lx\n",
(unsigned long)loadfile_bfd->start_address);
printf ("Start address 0x%lx\n",
(unsigned long)loadfile_bfd->start_address);
/* We were doing this in remote-mips.c, I suspect it is right
for other targets too. */
@ -115,25 +117,26 @@ create_inferior (program, argv)
new_argv = alloca (sizeof (char *) * (nargs + 3)); /* allocate new args */
for (nargs = 0; argv[nargs] != NULL; nargs++) /* copy old to new */
new_argv[nargs] = argv[nargs];
new_args[nargs] = "-E";
new_args[nargs + 1] = bfd_big_endian (abfd) ? "big" : "little";
new_args[nargs + 2] = NULL;
argv = new_args;
new_argv[nargs] = "-E";
new_argv[nargs + 1] = bfd_big_endian (abfd) ? "big" : "little";
new_argv[nargs + 2] = NULL;
argv = new_argv;
#endif
/* Create an instance of the simulator. */
default_callback.init (&default_callback);
gdbsim_desc = sim_open (SIM_OPEN_STANDALONE, &default_callback, argv);
gdbsim_desc = sim_open (SIM_OPEN_STANDALONE, &default_callback, abfd, argv);
if (gdbsim_desc == 0)
exit (1);
/* Load the program into the simulator. */
if (sim_load (gdbsim_desc, program, NULL, 0) == SIM_RC_FAIL)
generic_load (abfd);
if (abfd)
if (sim_load (gdbsim_desc, program, NULL, 0) == SIM_RC_FAIL)
generic_load (abfd);
/* Create an inferior process in the simulator. This initializes SP. */
sim_create_inferior (gdbsim_desc, argv, /* env */ NULL);
sim_create_inferior (gdbsim_desc, abfd, argv, /* env */ NULL);
sim_resume (gdbsim_desc, 1, 0); /* execute one instr */
return pid;
}
@ -152,7 +155,8 @@ static void
fetch_register (regno)
int regno;
{
sim_fetch_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)]);
sim_fetch_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
/* Fetch all registers, or just one, from the child process. */
@ -182,7 +186,8 @@ store_inferior_registers (regno)
store_inferior_registers (regno);
}
else
sim_store_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)]);
sim_store_register (gdbsim_desc, regno, &registers[REGISTER_BYTE (regno)],
REGISTER_RAW_SIZE (regno));
}
/* Return nonzero if the given thread is still alive. */
@ -206,19 +211,22 @@ mywait (status)
switch (reason)
{
case sim_exited:
fprintf (stderr, "\nChild exited with retcode = %x \n", sigrc);
if (remote_debug)
printf ("\nChild exited with retcode = %x \n", sigrc);
*status = 'W';
return sigrc;
#if 0
case sim_stopped:
fprintf (stderr, "\nChild terminated with signal = %x \n", sigrc);
if (remote_debug)
printf ("\nChild terminated with signal = %x \n", sigrc);
*status = 'X';
return sigrc;
#endif
default: /* should this be sim_signalled or sim_stopped? FIXME!! */
fprintf (stderr, "\nChild received signal = %x \n", sigrc);
if (remote_debug)
printf ("\nChild received signal = %x \n", sigrc);
fetch_inferior_registers (0);
*status = 'T';
return (unsigned char) sigrc;