From: Richard Henderson <richard.henderson@linaro.org>
To: qemu-devel@nongnu.org
Cc: laurent@vivier.eu, Ilya Leoshkevich <iii@linux.ibm.com>
Subject: [PATCH v2 01/15] linux-user/sparc: Raise SIGILL for all unhandled software traps
Date: Wed, 15 Feb 2023 19:45:02 -1000 [thread overview]
Message-ID: <20230216054516.1267305-2-richard.henderson@linaro.org> (raw)
In-Reply-To: <20230216054516.1267305-1-richard.henderson@linaro.org>
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>
---
linux-user/sparc/cpu_loop.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index 434c90a55f..c120c42278 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -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);
--
2.34.1
next prev parent reply other threads:[~2023-02-16 5:46 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-16 5:45 [PATCH v2 00/15] linux-user/sparc: Handle missing traps Richard Henderson
2023-02-16 5:45 ` Richard Henderson [this message]
2023-02-16 6:07 ` [PATCH v2 01/15] linux-user/sparc: Raise SIGILL for all unhandled software traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 02/15] linux-user/sparc: Tidy syscall trap Richard Henderson
2023-02-16 7:51 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 03/15] linux-user/sparc: Tidy syscall error return Richard Henderson
2023-02-16 5:45 ` [PATCH v2 04/15] linux-user/sparc: Use TT_TRAP for flush windows Richard Henderson
2023-02-16 7:54 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 05/15] linux-user/sparc: Tidy window spill/fill traps Richard Henderson
2023-02-16 7:55 ` Philippe Mathieu-Daudé
2023-02-16 5:45 ` [PATCH v2 06/15] linux-user/sparc: Fix sparc64_{get, set}_context traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 07/15] linux-user/sparc: Handle software breakpoint trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 08/15] linux-user/sparc: Handle division by zero traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 09/15] linux-user/sparc: Handle getcc, setcc, getpsr traps Richard Henderson
2023-02-16 5:45 ` [PATCH v2 10/15] linux-user/sparc: Handle priviledged opcode trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 11/15] linux-user/sparc: Handle privilidged action trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 12/15] linux-user/sparc: Handle coprocessor disabled trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 13/15] linux-user/sparc: Handle unimplemented flush trap Richard Henderson
2023-02-16 5:45 ` [PATCH v2 14/15] linux-user/sparc: Handle floating-point exceptions Richard Henderson
2023-02-16 5:45 ` [PATCH v2 15/15] linux-user/sparc: Handle tag overflow traps Richard Henderson
2023-03-07 15:56 ` [PATCH v2 00/15] linux-user/sparc: Handle missing traps Laurent Vivier
2023-03-07 17:07 ` Richard Henderson
2023-03-07 18:23 ` Laurent Vivier
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