diff options
| author | Richard Henderson <richard.henderson@linaro.org> | 2023-08-22 22:07:41 -0700 |
|---|---|---|
| committer | Richard Henderson <richard.henderson@linaro.org> | 2023-10-18 15:34:34 -0700 |
| commit | 4a6ebc19a7e2d013a0e2ca79452ea733b1d5b686 (patch) | |
| tree | 82f422e651e38ed3343ae8043956c5aa211aebd9 /linux-user | |
| parent | f4e1168198a6306c3e337f2b91b1213f5bef52af (diff) | |
linux-user: Detect and report host SIGILL, SIGFPE, SIGTRAP
These signals, when not spoofed via kill(), are always bugs.
Use die_from_signal to report this sensibly.
Acked-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'linux-user')
| -rw-r--r-- | linux-user/signal.c | 44 |
1 files changed, 43 insertions, 1 deletions
diff --git a/linux-user/signal.c b/linux-user/signal.c index 706b8ac7a7..b67077f320 100644 --- a/linux-user/signal.c +++ b/linux-user/signal.c @@ -796,6 +796,43 @@ void die_from_signal(siginfo_t *info) break; } break; + case SIGILL: + sig = "ILL"; + switch (info->si_code) { + case ILL_ILLOPC: + code = "ILLOPC"; + break; + case ILL_ILLOPN: + code = "ILLOPN"; + break; + case ILL_ILLADR: + code = "ILLADR"; + break; + case ILL_PRVOPC: + code = "PRVOPC"; + break; + case ILL_PRVREG: + code = "PRVREG"; + break; + case ILL_COPROC: + code = "COPROC"; + break; + } + break; + case SIGFPE: + sig = "FPE"; + switch (info->si_code) { + case FPE_INTDIV: + code = "INTDIV"; + break; + case FPE_INTOVF: + code = "INTOVF"; + break; + } + break; + case SIGTRAP: + sig = "TRAP"; + break; default: snprintf(sigbuf, sizeof(sigbuf), "%d", info->si_signo); sig = sigbuf; @@ -900,7 +937,8 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc) /* * Non-spoofed SIGSEGV and SIGBUS are synchronous, and need special - * handling wrt signal blocking and unwinding. + * handling wrt signal blocking and unwinding. Non-spoofed SIGILL, + * SIGFPE, SIGTRAP are always host bugs. */ if (info->si_code > 0) { switch (host_sig) { @@ -912,6 +950,10 @@ static void host_signal_handler(int host_sig, siginfo_t *info, void *puc) host_sigbus_handler(cpu, info, uc); sync_sig = true; break; + case SIGILL: + case SIGFPE: + case SIGTRAP: + die_from_signal(info); } } |