diff options
| -rw-r--r-- | include/ChangeLog | 5 | ||||
| -rw-r--r-- | include/remote-sim.h | 34 |
2 files changed, 32 insertions, 7 deletions
diff --git a/include/ChangeLog b/include/ChangeLog index 3062b34..2252991 100644 --- a/include/ChangeLog +++ b/include/ChangeLog @@ -1,3 +1,8 @@ +Tue Feb 8 17:01:13 2000 Andrew Cagney <cagney@b1.cygnus.com> + + * remote-sim.h (sim_resume): Clarify use of SIGGNAL. + (sim_stop_reason): Clarify meaning of sim_signalled. + 2000-02-03 Timothy Wall <twall@redhat.com> * dis-asm.h (struct disassemble_info): Added octets_per_byte diff --git a/include/remote-sim.h b/include/remote-sim.h index a4480b4..a8eb923 100644 --- a/include/remote-sim.h +++ b/include/remote-sim.h @@ -211,7 +211,27 @@ int sim_store_register PARAMS ((SIM_DESC sd, int regno, unsigned char *buf, int void sim_info PARAMS ((SIM_DESC sd, int verbose)); -/* Run (or resume) the simulated program. */ +/* Run (or resume) the simulated program. + + STEP, when non-zero indicates that only a single simulator cycle + should be emulated. + + SIGGNAL, if non-zero is a (HOST) SIGRC value indicating the type of + event (hardware interrupt, signal) to be delivered to the simulated + program. + + Hardware simulator: If the SIGRC value returned by + sim_stop_reason() is passed back to the simulator via SIGGNAL then + the hardware simulator shall correctly deliver the hardware event + indicated by that signal. If a value of zero is passed in then the + simulation will continue as if there were no outstanding signal. + The effect of any other SIGGNAL value is is implementation + dependant. + + Process simulator: If SIGRC is non-zero then the corresponding + signal is delivered to the simulated program and execution is then + continued. A zero SIGRC value indicates that the program should + continue as normal. */ void sim_resume PARAMS ((SIM_DESC sd, int step, int siggnal)); @@ -234,13 +254,13 @@ int sim_stop PARAMS ((SIM_DESC sd)); (SIGTRAP); a completed single step (SIGTRAP); an internal error condition (SIGABRT); an illegal instruction (SIGILL); Access to an undefined memory region (SIGSEGV); Mis-aligned memory access - (SIGBUS). + (SIGBUS). For some signals information in addition to the signal + number may be retained by the simulator (e.g. offending address), + that information is not directly accessable via this interface. - 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_SIGNALLED: The program has been terminated by a signal. The + simulator has encountered target code that causes the the program + to exit with signal SIGRC. SIM_RUNNING, SIM_POLLING: The return of one of these values indicates a problem internal to the simulator. */ |