The Linux kernel traps and emulates certain instructions. For user only,
QEMU is the kernel, so we emulate those traps by simply emulating the
instructions directly.
Signed-off-by: Fredrik Noring <nor...@nocrew.org>
Reviewed-by: Philippe Mathieu-Daudé <f4...@amsat.org>
---
target/mips/translate.c | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/target/mips/translate.c b/target/mips/translate.c
index c35be0053b..2fe46f8775 100644
--- a/target/mips/translate.c
+++ b/target/mips/translate.c
@@ -1887,6 +1887,18 @@ static inline void check_insn_opc_removed(DisasContext
*ctx, int flags)
}
}
+/*
+ * Unless user only, when the kernel emulates the code, a "reserved
+ * instruction" exception is generated if the CPU has corresponding
+ * flag set which indicates that the instruction has been removed.
+ */
+static inline void check_insn_opc_user_only(DisasContext *ctx, int flags)
+{
+#ifndef CONFIG_USER_ONLY
+ check_insn_opc_removed(ctx, flags);
+#endif
+}
+
/* This code generates a "reserved instruction" exception if the
CPU does not support 64-bit paired-single (PS) floating point data type */
static inline void check_ps(DisasContext *ctx)
--
2.16.4
