More signal cleanups. Mostly tested by temporarily adding an
abort, divide by zero, undefined instruction, null dereference,
within the implementation of a guest syscall to induce an error.
Changes for v5:
* Remap guest abort, which means we need to try less hard on
the host side to handle assertion failures.
* Drop the backtrace. Since backtrace_symbols only looks at the
dynamic symbol set, we don't much that's useful -- we still
need to use the debugger.
r~
Helge Deller (1):
linux-user: Detect and report host crashes
Richard Henderson (8):
linux-user: Split out die_with_signal
linux-user: Exit not abort in die_with_backtrace
linux-user: Only register handlers for core_dump_signal by default
linux-user: Map unsupported signals to an out-of-bounds value
linux-user: Simplify signal_init
linux-user: Split out host_sig{segv,bus}_handler
linux-user: Detect and report host SIGILL, SIGFPE, SIGTRAP
linux-user: Remap guest SIGABRT
linux-user/signal.c | 452 +++++++++++++++++++++++++++++---------------
1 file changed, 296 insertions(+), 156 deletions(-)