Restrict simulator commands to an enabled simulator.
This commit is contained in:
Andrew Cagney
parent
28558bdb36
commit
1fa0cc2dfc
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@ -1,3 +1,8 @@
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Thu May 22 11:53:21 1997 Andrew Cagney <cagney@b1.cygnus.com>
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* remote-sim.c (simulator_command): Restrict access to the
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simulator to periods when the simulator is open.
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Wed May 21 16:03:25 1997 Michael Snyder <msnyder@cleaver.cygnus.com>
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* procfs.c (init_procinfo): new function, abstracts some code
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@ -500,6 +500,8 @@ gdbsim_open (args, from_tty)
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sprintf (arg_buf, "gdbsim%s%s",
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args ? " " : "", args ? args : "");
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#ifdef TARGET_BYTE_ORDER_SELECTABLE
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/* Since GDB always closes the target and updates byte-order when
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opening a new file, TARGET_BYTE_ORDER is normally correct. */
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if (TARGET_BYTE_ORDER == BIG_ENDIAN)
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strcat (arg_buf, " -E big");
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else
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@ -777,15 +779,22 @@ simulator_command (args, from_tty)
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char *args;
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int from_tty;
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{
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/* The user may give a command before the simulator is opened, so
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ensure that the callbacks have been set up. */
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init_callbacks ();
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if (gdbsim_desc == NULL)
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{
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/* PREVIOUSLY: The user may give a command before the simulator
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is opened. [...] (??? assuming of course one wishes to
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continue to allow commands to be sent to unopened simulators,
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which isn't entirely unreasonable). */
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/* The simulator is a builtin abstraction of a remote target.
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Consistent with that model, access to the simulator, via sim
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commands, is restricted to the period when the channel to the
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simulator is open. */
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error ("Not connected to the simulator target");
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}
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/* Note that if the simulator hasn't been opened, gdbsim_desc == NULL
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which is correct (??? assuming of course one wishes to continue to
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allow commands to be sent to unopened simulators, which isn't entirely
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unreasonable). Simulators should be prepared to deal with any
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combination of NULL or empty args. */
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sim_do_command (gdbsim_desc, args);
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}
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@ -1,3 +1,8 @@
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Thu May 22 11:32:49 1997 Andrew Cagney <cagney@b1.cygnus.com>
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* remote-sim.h: Review documentation. Clarify restrictions on
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when functions can be called.
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Wed May 21 16:47:53 1997 Andrew Cagney <cagney@b1.cygnus.com>
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* remote-sim.h (sim_set_profile_size): Add prototype, document as
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@ -32,48 +32,57 @@ typedef unsigned int SIM_ADDR;
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typedef CORE_ADDR_TYPE SIM_ADDR;
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#endif
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/* Semi-opaque type used as result of sim_open and passed back to all
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other routines. "desc" is short for "descriptor".
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It is up to each simulator to define `sim_state'. */
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typedef struct sim_state *SIM_DESC;
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/* Values for `kind' arg to sim_open. */
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typedef enum {
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SIM_OPEN_STANDALONE, /* simulator used standalone (run.c) */
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SIM_OPEN_DEBUG /* simulator used by debugger (gdb) */
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} SIM_OPEN_KIND;
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/* Return codes from various functions. */
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typedef enum {
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SIM_RC_FAIL = 0,
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SIM_RC_OK = 1
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} SIM_RC;
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/* The bfd struct, as an opaque type. */
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struct _bfd;
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/* Main simulator entry points. */
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/* Initialize the simulator. This function is called when the simulator
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is selected from the gdb command line.
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/* Create a simulator instance.
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(This function is called when the simulator is selected from the
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gdb command line.)
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KIND specifies how the simulator will be used. Currently there are only
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two kinds: standalone and debug.
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CALLBACK provides a standard host callback.
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CALLBACK specifies a standard host callback (defined in callback.h).
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ARGV is passed from the command line and can be used to select whatever
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run time options the simulator provides. It is the standard NULL
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terminated array of pointers, with argv[0] being the program name.
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The result is a descriptor that must be passed back to the other sim_foo
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functions. */
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The result is a descriptor that shall be passed to the other
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sim_foo functions. */
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SIM_DESC sim_open PARAMS ((SIM_OPEN_KIND kind, struct host_callback_struct *callback, char **argv));
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/* Terminate usage of the simulator. This may involve freeing target memory
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and closing any open files and mmap'd areas. You cannot assume sim_kill
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has already been called.
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/* Destory a simulator instance.
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This may involve freeing target memory and closing any open files
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and mmap'd areas. You cannot assume sim_kill has already been
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called.
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QUITTING is non-zero if we cannot hang on errors. */
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void sim_close PARAMS ((SIM_DESC sd, int quitting));
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@ -110,12 +119,12 @@ int sim_read PARAMS ((SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length)
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int sim_write PARAMS ((SIM_DESC sd, SIM_ADDR mem, unsigned char *buf, int length));
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/* Fetch register REGNO and store the raw value in BUF. */
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/* Fetch register REGNO and store the raw (target endian) value in BUF. */
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void sim_fetch_register PARAMS ((SIM_DESC sd, int regno, unsigned char *buf));
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/* Store register REGNO from BUF (in raw format). */
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/* Store register REGNO from the raw (target endian) value in BUF. */
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void sim_store_register PARAMS ((SIM_DESC sd, int regno, unsigned char *buf));
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@ -126,23 +135,7 @@ void sim_store_register PARAMS ((SIM_DESC sd, int regno, unsigned char *buf));
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void sim_info PARAMS ((SIM_DESC sd, int verbose));
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/* Fetch the reason why the program stopped.
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SIM_EXITED: The program has terminated. SIGRC indicates the target
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dependant exit status.
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SIM_STOPPED: Any of a breakpoint (SIGTRAP), a completed step
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(SIGTRAP), a sim_stop request (SIGINT), or an internal error
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condition (SIGABRT) was encountered.
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SIM_SIGNALLED: The simulator encountered target code that requires
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the signal SIGRC to be delivered to the simulated program.
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SIM_RUNNING, SIM_POLLING: The return of one of these values
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indicates a problem internal to the simulator. */
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enum sim_stop { sim_running, sim_polling, sim_exited, sim_stopped, sim_signalled };
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void sim_stop_reason PARAMS ((SIM_DESC sd, enum sim_stop *reason, int *sigrc));
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/* Run (or resume) the program. */
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/* Run (or resume) the simulated program. */
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void sim_resume PARAMS ((SIM_DESC sd, int step, int siggnal));
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@ -154,31 +147,59 @@ void sim_resume PARAMS ((SIM_DESC sd, int step, int siggnal));
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int sim_stop PARAMS ((SIM_DESC sd));
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/* Passthru for other commands that the simulator might support.
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If SD is NULL, the command is to be interpreted as refering to
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the global state, however the simulator defines that. */
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/* Fetch the REASON why the program stopped.
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SIM_EXITED: The program has terminated. SIGRC indicates the target
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dependant exit status.
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SIM_STOPPED: The program has stopped. SIGRC indicates the reason:
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program interrupted by user via a sim_stop request (SIGINT); a
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breakpoint instruction (SIGTRAP); a completed step (SIGTRAP); an
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internal error condition (SIGABRT).
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SIM_SIGNALLED: The simulator encountered target code that requires
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the signal SIGRC to be delivered to the simulated program.
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SIM_RUNNING, SIM_POLLING: The return of one of these values
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indicates a problem internal to the simulator. */
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enum sim_stop { sim_running, sim_polling, sim_exited, sim_stopped, sim_signalled };
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void sim_stop_reason PARAMS ((SIM_DESC sd, enum sim_stop *reason, int *sigrc));
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/* Passthru for other commands that the simulator might support.
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Simulators should be prepared to deal with any combination of NULL
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or empty CMD. */
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void sim_do_command PARAMS ((SIM_DESC sd, char *cmd));
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/* NOTE: sim_set_callbacks () is depreciated.
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Provide simulator with a default (global) host_callback_struct. */
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/* Provide simulator with a default (global) host_callback_struct.
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THIS PROCEDURE IS IS DEPRECIATED.
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This procedure does not take a SIM_DESC argument as it is
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used before sim_open. */
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void sim_set_callbacks PARAMS ((struct host_callback_struct *));
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/* NOTE: sim_size() is depreciated.
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sim_size() does not take a SIM_DESC argument as this function is
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used before sim_open() has been called. */
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/* Set the size of the simulator memory array.
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THIS PROCEDURE IS IS DEPRECIATED.
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This procedure does not take a SIM_DESC argument as it is
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used before sim_open. */
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void sim_size PARAMS ((int i));
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/* NOTE: sim_trace() is depreciated. */
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/* Run a simulation with tracing enabled.
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THIS PROCEDURE IS IS DEPRECIATED.
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This procedure does not take a SIM_DESC argument as it is
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used before sim_open. */
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int sim_trace PARAMS ((SIM_DESC sd));
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/* NOTE: sim_set_profile_size is depreciated */
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/* Configure the size of the profile buffer.
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THIS PROCEDURE IS IS DEPRECIATED.
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This procedure does not take a SIM_DESC argument as it is
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used before sim_open. */
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void sim_set_profile_size PARAMS ((int n));
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#endif /* !defined (REMOTE_SIM_H) */
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