This exception can be raised by illegal instructions.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
linux-user/m68k/cpu_loop.c | 5 ++++-
tests/tcg/m68k/excp-address.c | 32 ++++++++++++++++++++++++++++++++
tests/tcg/m68k/Makefile.target | 1 +
3 files changed, 37 insertions(+), 1 deletion(-)
create mode 100644 tests/tcg/m68k/excp-address.c
diff --git a/linux-user/m68k/cpu_loop.c b/linux-user/m68k/cpu_loop.c
index caead1cb74..84b5d290c0 100644
--- a/linux-user/m68k/cpu_loop.c
+++ b/linux-user/m68k/cpu_loop.c
@@ -35,7 +35,10 @@ void cpu_loop(CPUM68KState *env)
cpu_exec_end(cs);
process_queued_cpu_work(cs);
- switch(trapnr) {
+ switch (trapnr) {
+ case EXCP_ADDRESS:
+ force_sig_fault(TARGET_SIGBUS, TARGET_BUS_ADRALN, env->pc);
+ break;
case EXCP_ILLEGAL:
case EXCP_LINEA:
case EXCP_LINEF:
diff --git a/tests/tcg/m68k/excp-address.c b/tests/tcg/m68k/excp-address.c
new file mode 100644
index 0000000000..1dbdddef58
--- /dev/null
+++ b/tests/tcg/m68k/excp-address.c
@@ -0,0 +1,32 @@
+/*
+ * Test m68k address exception
+ */
+
+#define _GNU_SOURCE 1
+#include <signal.h>
+#include <stdlib.h>
+
+static void sig_handler(int sig, siginfo_t *si, void *puc)
+{
+ exit(0);
+}
+
+int main(int argc, char **argv)
+{
+ struct sigaction act = {
+ .sa_sigaction = sig_handler,
+ .sa_flags = SA_SIGINFO
+ };
+
+ sigaction(SIGBUS, &act, NULL);
+
+ /*
+ * addl %d0,#0 -- with immediate as destination is illegal.
+ * Buggy qemu interpreted the insn as 5 words: 2 for immediate source
+ * and another 2 for immediate destination. Provide all that padding
+ * so that abort gets called.
+ */
+ asm volatile(".word 0xd1bc,0,0,0,0");
+
+ abort();
+}
diff --git a/tests/tcg/m68k/Makefile.target b/tests/tcg/m68k/Makefile.target
index 1163c7ef03..d3b0bc48a3 100644
--- a/tests/tcg/m68k/Makefile.target
+++ b/tests/tcg/m68k/Makefile.target
@@ -4,6 +4,7 @@
#
VPATH += $(SRC_PATH)/tests/tcg/m68k
+TESTS += excp-address
TESTS += trap
# On m68k Linux supports 4k and 8k pages (but 8k is currently broken)
--
2.34.1
