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Clarify meaning of sim_signalled's SIGRC argument. Document that this

Browse source 
isn't possible in sim-reason.c and just return the target SIGRC
instead.

For simulators that rely on sim-reason.c, replace SIG* with SIM_SIG*.

Hack nrun.c so that when it is executed (ARGV[0]) as `step' instead
of `run' it single steps the simulator.  Allows testing of single step
without full GDB.
This commit is contained in:
Andrew Cagney 1997-11-22 12:52:44 +00:00
parent 38639b1294
commit aaa11abe42
8 changed files with 40 additions and 16 deletions
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7
include/remote-sim.h
View file

@ -223,8 +223,11 @@ int sim_stop PARAMS ((SIM_DESC sd));
undefined memory region (SIGSEGV); Mis-aligned memory access
(SIGBUS).
SIM_SIGNALLED: The simulator encountered target code that requires
the signal SIGRC to be delivered to the simulated program.
SIM_SIGNALLED: The program has stopped. The simulator has
encountered target code that requires the (HOST) signal SIGRC to be
delivered to the simulated program. Ex: `kill (getpid (),
TARGET_SIGxxx)'. Where TARGET_SIGxxx has been translated into a
host signal. FIXME: This is not always possible..
SIM_RUNNING, SIM_POLLING: The return of one of these values
indicates a problem internal to the simulator. */

12
sim/common/ChangeLog
View file

@ -1,3 +1,15 @@
Sat Nov 22 19:16:54 1997 Andrew Cagney <cagney@b1.cygnus.com>
* sim-reason.c (sim_stop_reason): For sim_signalled, terurn the
signal untranslated, document problem with this.
* nrun.c (main): Check for a prog name of `*step'. If present,
step the simulator instead of allowing it to run free.
* sim-signal.c (SIGQUIT): Define on _MSC_VER hosts.
* Make-common.in (sim_main_headers): Add sim-signal.h.
Fri Nov 21 09:32:32 1997 Andrew Cagney <cagney@b1.cygnus.com>
* sim-signal.c (sim_signal_to_host): Return 0 for SIM_SIGNONE.

1
sim/common/Make-common.in
View file

@ -254,6 +254,7 @@ sim_main_headers = \
$(srccom)/sim-config.h \
$(srccom)/sim-base.h \
$(srccom)/sim-basics.h \
$(srccom)/sim-signal.h \
$(srccom)/sim-memopt.h \
$(srccom)/sim-model.h \
$(srccom)/sim-module.h \

14
sim/tic80/ChangeLog
View file

@ -1,3 +1,17 @@
Sat Nov 22 21:42:09 1997 Andrew Cagney <cagney@b1.cygnus.com>
* interp.c (engine_step): Replace SIGTRAP with SIM_SIGTRAP.
(engine_run_until_stop): Replace SIGINT with SIM_SIGINT.
* sim-main.h: Include sim-signal.h.
(SIGTRAP): Delete definition.
* interp.c, sim-calls.c: Do not include signal.h.
* insns (illegal): SIGILL -> SIM_SIGILL.
(fp_unavailable): SIGFPE -> SIM_SIGFPE.
(do_trap): SIGTRAP -> SIM_SIGTRAP.
Tue Nov 18 15:33:48 1997 Doug Evans <devans@canuck.cygnus.com>
* sim-main.h (CIA_ADDR): Define.

6
sim/tic80/insns
View file

@ -22,12 +22,12 @@
// The following is called when ever an illegal instruction is encountered.
:internal::::illegal:
sim_io_eprintf (SD, "0x%lx: illegal instruction\n", (unsigned long) cia.ip);
sim_engine_halt (SD, CPU, NULL, cia, sim_signalled, SIGILL);
sim_engine_halt (SD, CPU, NULL, cia, sim_signalled, SIM_SIGILL);
// The following is called when ever an FP op is attempted with FPU disabled.
:internal::::fp_unavailable:
sim_io_eprintf (SD, "0x%lx: floating-point unavailable\n", (unsigned long) cia.ip);
sim_engine_halt (SD, CPU, NULL, cia, sim_signalled, SIGFPE);
sim_engine_halt (SD, CPU, NULL, cia, sim_signalled, SIM_SIGFPE);
// Handle a branch instruction
:function:::instruction_address:do_branch:int annul, address_word target, int rLink_p, unsigned32 *rLink
@ -1229,7 +1229,7 @@ void::function::do_trap:unsigned32 trap_number
}
break;
case 73:
sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIGTRAP);
sim_engine_halt (SD, CPU, NULL, cia, sim_stopped, SIM_SIGTRAP);
/* Add a few traps for now to print the register state */
case 74:

7
sim/tic80/interp.c
View file

@ -26,8 +26,6 @@
#include "idecode.h"
#include "itable.h"
#include <signal.h>
#ifdef HAVE_STRING_H
#include <string.h>
#else
@ -103,7 +101,7 @@ engine_run_until_stop (SIM_DESC sd,
cia = idecode_issue (sd, insn, cia);
}
while (*keep_running);
engine_halt (sd, cpu, cia, sim_stopped, SIGINT);
engine_halt (sd, cpu, cia, sim_stopped, SIM_SIGINT);
}
}
@ -122,9 +120,8 @@ engine_step (SIM_DESC sd)
cia = cpu->cia;
insn = IMEM (cia);
cia = idecode_issue (sd, insn, cia);
engine_halt (sd, cpu, cia, sim_stopped, SIGTRAP);
engine_halt (sd, cpu, cia, sim_stopped, SIM_SIGTRAP);
}
}
#endif

1
sim/tic80/sim-calls.c
View file

@ -20,7 +20,6 @@
*/
#include <signal.h> /* FIXME - should be machine dependant version */
#include <stdarg.h>
#include <ctype.h>

8
sim/tic80/sim-main.h
View file

@ -25,8 +25,10 @@
#include "sim-basics.h"
#include "sim-signal.h"
#include <signal.h> /* For kill() in insns:do_trap */
#include <signal.h>
#include <errno.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
@ -77,7 +79,3 @@ extern void engine_init
#define kill(sig, pid) (errno = EINVAL, -1)
#endif
#endif
#ifndef SIGTRAP
# define SIGTRAP 5
#endif