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* Makefile.in (SIM_OBJS): Add sim-load.o.

Browse Source 
* interp.c: #include bfd.h.
	(target_byte_order): Delete.
	(sim_kind, myname, big_endian_p): New static locals.
	(sim_open): Set sim_kind, myname.  Move call to set_endianness to
	after argument parsing.  Recognize -E arg, set endianness accordingly.
	(sim_load): Return SIM_RC.  New arg abfd.  Call sim_load_file to
	load file into simulator.  Set PC from bfd.
	(sim_create_inferior): Return SIM_RC.  Delete arg start_address.
	(set_endianness): Use big_endian_p instead of target_byte_order.
This commit is contained in:
David Edelsohn 1997-04-17 10:23:48 +00:00
parent 463372706f
commit 9d52bcb7f0
2 changed files with 52 additions and 26 deletions
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13
sim/mips/ChangeLog
View File

@ -1,3 +1,16 @@
Thu Apr 17 03:18:14 1997 Doug Evans <dje@canuck.cygnus.com>
* Makefile.in (SIM_OBJS): Add sim-load.o.
* interp.c: #include bfd.h.
(target_byte_order): Delete.
(sim_kind, myname, big_endian_p): New static locals.
(sim_open): Set sim_kind, myname. Move call to set_endianness to
after argument parsing. Recognize -E arg, set endianness accordingly.
(sim_load): Return SIM_RC. New arg abfd. Call sim_load_file to
load file into simulator. Set PC from bfd.
(sim_create_inferior): Return SIM_RC. Delete arg start_address.
(set_endianness): Use big_endian_p instead of target_byte_order.
Wed Apr 16 17:55:37 1997 Andrew Cagney <cagney@b1.cygnus.com>
* interp.c (sim_size): Delete prototype - conflicts with

65
sim/mips/interp.c
View File

@ -62,7 +62,7 @@ code on the hardware.
#include "getopt.h"
#include "libiberty.h"
#include "bfd.h"
#include "callback.h" /* GDB simulator callback interface */
#include "remote-sim.h" /* GDB simulator interface */
@ -86,8 +86,9 @@ char* pr_uword64 PARAMS ((uword64 addr));
#include "engine.c"
#undef SIM_MANIFESTS
/* This variable holds the GDB view of the target endianness: */
extern int target_byte_order;
static SIM_OPEN_KIND sim_kind;
static char *myname;
static int big_endian_p;
/* The following reserved instruction value is used when a simulator
trap is required. NOTE: Care must be taken, since this value may be
@ -666,6 +667,9 @@ sim_open (kind,argv)
stdout and stderr are initialised: */
callback->init(callback);
sim_kind = kind;
myname = argv[0];
state = 0;
CHECKSIM();
if (state & simEXCEPTION) {
@ -679,8 +683,6 @@ sim_open (kind,argv)
state |= simHOSTBE; /* big-endian host */
}
set_endianness ();
#if defined(HASFPU)
/* Check that the host FPU conforms to IEEE 754-1985 for the SINGLE
and DOUBLE binary formats. This is a bit nasty, requiring that we
@ -752,11 +754,15 @@ sim_open (kind,argv)
while (1) {
int option_index = 0;
c = getopt_long(argc,argv,"hn:s:tp",cmdline,&option_index);
c = getopt_long(argc,argv,"E:hn:s:tp",cmdline,&option_index);
if (c == -1)
break;
switch (c) {
case 'E' :
big_endian_p = strcmp (optarg, "big") == 0;
break;
case 'h':
callback->printf_filtered(callback,"Usage:\n\t\
target sim [-h] [--log=<file>] [--name=<model>] [--size=<amount>]");
@ -871,6 +877,8 @@ Re-compile simulator with \"-DPROFILE\" to enable this option.\n");
}
}
set_endianness ();
/* If the host has "mmap" available we could use it to provide a
very large virtual address space for the simulator, since memory
would only be allocated within the "mmap" space as it is
@ -1449,40 +1457,45 @@ sim_info (sd,verbose)
return;
}
int
sim_load (sd,prog,from_tty)
SIM_RC
sim_load (sd,prog,abfd,from_tty)
SIM_DESC sd;
char *prog;
bfd *abfd;
int from_tty;
{
/* Return non-zero if the caller should handle the load. Zero if
we have loaded the image. */
return(-1);
extern bfd *sim_load_file (); /* ??? Don't know where this should live. */
bfd *prog_bfd;
prog_bfd = sim_load_file (sd, myname, callback, prog, abfd,
sim_kind == SIM_OPEN_DEBUG);
if (prog_bfd == NULL)
return SIM_RC_FAIL;
#if 1
PC = (uword64) bfd_get_start_address (prog_bfd);
#else
/* TODO: Sort this properly. SIM_ADDR may already be a 64bit value: */
PC = SIGNEXTEND(bfd_get_start_address(prog_bfd),32);
#endif
if (abfd == NULL)
bfd_close (prog_bfd);
return SIM_RC_OK;
}
void
sim_create_inferior (sd, start_address,argv,env)
SIM_RC
sim_create_inferior (sd, argv,env)
SIM_DESC sd;
SIM_ADDR start_address;
char **argv;
char **env;
{
#ifdef DEBUG
printf("DBG: sim_create_inferior entered: start_address = 0x%s\n",pr_addr(start_address));
printf("DBG: sim_create_inferior entered: start_address = 0x%s\n",
pr_addr(PC));
#endif /* DEBUG */
/* Prepare to execute the program to be simulated */
/* argv and env are NULL terminated lists of pointers */
#if 1
PC = (uword64)start_address;
#else
/* TODO: Sort this properly. SIM_ADDR may already be a 64bit value: */
PC = SIGNEXTEND(start_address,32);
#endif
/* NOTE: GDB normally sets the PC explicitly. However, this call is
used by other clients of the simulator. */
if (argv || env) {
#if 0 /* def DEBUG */
callback->printf_filtered(callback,"sim_create_inferior() : passed arguments ignored\n");
@ -1498,7 +1511,7 @@ sim_create_inferior (sd, start_address,argv,env)
true at the moment. */
}
return;
return SIM_RC_OK;
}
void
@ -2350,7 +2363,7 @@ set_endianness ()
within the simulation, since it is possible to change the
endianness of user programs. However, we perform the check here
to ensure that the start-of-day values agree. */
if (target_byte_order == 4321)
if (big_endian_p)
state |= simBE;
/* ??? This is a lot more code than is necessary to solve the problem.