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linux-user/sparc: Raise SIGILL for all unhandled software traps 

The linux kernel's trap tables vector all unassigned trap
numbers to BAD_TRAP, which then raises SIGILL.

Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reported-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This commit is contained in:
Richard Henderson 2023-02-01 10:56:15 -10:00
parent 2627e4524e
commit 21a474c41d
1 changed files with 8 additions and 0 deletions
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8
linux-user/sparc/cpu_loop.c
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@ -248,6 +248,14 @@ void cpu_loop (CPUSPARCState *env)
cpu_exec_step_atomic(cs);
break;
default:
/*
* Most software trap numbers vector to BAD_TRAP.
* Handle anything not explicitly matched above.
*/
if (trapnr >= TT_TRAP && trapnr <= TT_TRAP + 0x7f) {
force_sig_fault(TARGET_SIGILL, ILL_ILLTRP, env->pc);
break;
}
fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, 0);
exit(EXIT_FAILURE);