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| author | Mike Frysinger <vapier@gentoo.org> | 2021-06-20 23:06:10 -0400 |
|---|---|---|
| committer | Mike Frysinger <vapier@gentoo.org> | 2021-06-23 20:05:14 -0400 |
| commit | d394a6efed4723b86f8e4f09fc23f6d03a7ad835 (patch) | |
| tree | 6fd21636c50bf4f62d608cfb975da8707158d360 /sim | |
| parent | 02ddf7223daa1dac8ba532dfd31d5d4d1870e6f4 (diff) | |
| download | gdb-d394a6efed4723b86f8e4f09fc23f6d03a7ad835.zip gdb-d394a6efed4723b86f8e4f09fc23f6d03a7ad835.tar.gz gdb-d394a6efed4723b86f8e4f09fc23f6d03a7ad835.tar.bz2 | |
sim: callback: add a kill interface
This will make it easier to emulate the syscall. If the kill target
is the sim itself, don't do anything. This forces the higher layers
to make a decision as to how to handle this event: like halting the
overall engine process.
Diffstat (limited to 'sim')
| -rw-r--r-- | sim/common/ChangeLog | 6 | ||||
| -rw-r--r-- | sim/common/callback.c | 11 | ||||
| -rw-r--r-- | sim/common/syscall.c | 18 |
3 files changed, 35 insertions, 0 deletions
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog index bb1a967..c32e747 100644 --- a/sim/common/ChangeLog +++ b/sim/common/ChangeLog @@ -1,5 +1,11 @@ 2021-06-23 Mike Frysinger <vapier@gentoo.org> + * callback.c (os_kill): New function. + (default_callback): Add os_kill. + * syscall.c (cb_syscall): Handle CB_SYS_kill. + +2021-06-23 Mike Frysinger <vapier@gentoo.org> + * Make-common.in (srcdir): Change to abs_srcdir. 2021-06-22 Mike Frysinger <vapier@gentoo.org> diff --git a/sim/common/callback.c b/sim/common/callback.c index 06d76b4..c0ace6e 100644 --- a/sim/common/callback.c +++ b/sim/common/callback.c @@ -570,6 +570,16 @@ os_getpid (host_callback *p) } static int +os_kill (host_callback *p, int pid, int signum) +{ + int result; + + result = kill (pid, signum); + p->last_errno = errno; + return result; +} + +static int os_pipe (host_callback *p, int *filedes) { int i; @@ -752,6 +762,7 @@ host_callback default_callback = os_truncate, os_getpid, + os_kill, os_pipe, os_pipe_empty, diff --git a/sim/common/syscall.c b/sim/common/syscall.c index 7ef34b9..6efddcf 100644 --- a/sim/common/syscall.c +++ b/sim/common/syscall.c @@ -583,6 +583,24 @@ cb_syscall (host_callback *cb, CB_SYSCALL *sc) result = (*cb->getpid) (cb); break; + case CB_SYS_kill: + /* If killing self, leave it to the caller to process so it can send the + signal to the engine. */ + if (sc->arg1 == (*cb->getpid) (cb)) + { + result = -1; + errcode = ENOSYS; + } + else + { + int signum = cb_target_to_host_signal (cb, sc->arg2); + + result = (*cb->kill) (cb, sc->arg1, signum); + cb->last_errno = errno; + goto ErrorFinish; + } + break; + case CB_SYS_time : { /* FIXME: May wish to change CB_SYS_time to something else. |