@@ -2681,3 +2681,71 @@ static bool trans_BCLR(DisasContext *ctx, arg_BCLR *a)
return true;
}
+
+/*
+ * MCU Control Instructions
+ */
+
+/*
+ * The BREAK instruction is used by the On-chip Debug system, and is
+ * normally not used in the application software. When the BREAK instruction is
+ * executed, the AVR CPU is set in the Stopped Mode. This gives the On-chip
+ * Debugger access to internal resources. If any Lock bits are set, or either
+ * the JTAGEN or OCDEN Fuses are unprogrammed, the CPU will treat the BREAK
+ * instruction as a NOP and will not enter the Stopped mode. This instruction
+ * is not available in all devices. Refer to the device specific instruction
+ * set summary.
+ */
+static bool trans_BREAK(DisasContext *ctx, arg_BREAK *a)
+{
+ if (!avr_have_feature(ctx, AVR_FEATURE_BREAK)) {
+ return true;
+ }
+
+#ifdef BREAKPOINT_ON_BREAK
+ tcg_gen_movi_tl(cpu_pc, ctx->npc - 1);
+ gen_helper_debug(cpu_env);
+ ctx->bstate = DISAS_EXIT;
+#else
+ /* NOP */
+#endif
+
+ return true;
+}
+
+
+/*
+ * This instruction performs a single cycle No Operation.
+ */
+static bool trans_NOP(DisasContext *ctx, arg_NOP *a)
+{
+
+ /* NOP */
+
+ return true;
+}
+
+
+/*
+ * This instruction sets the circuit in sleep mode defined by the MCU
+ * Control Register.
+ */
+static bool trans_SLEEP(DisasContext *ctx, arg_SLEEP *a)
+{
+ gen_helper_sleep(cpu_env);
+ ctx->bstate = DISAS_NORETURN;
+ return true;
+}
+
+
+/*
+ * This instruction resets the Watchdog Timer. This instruction must be
+ * executed within a limited time given by the WD prescaler. See the Watchdog
+ * Timer hardware specification.
+ */
+static bool trans_WDR(DisasContext *ctx, arg_WDR *a)
+{
+ gen_helper_wdr(cpu_env);
+
+ return true;
+}
@@ -172,3 +172,12 @@ BST 1111 101 rd:5 0 bit:3
BLD 1111 100 rd:5 0 bit:3
BSET 1001 0100 0 bit:3 1000
BCLR 1001 0100 1 bit:3 1000
+
+#
+# MCU Control Instructions
+#
+BREAK 1001 0101 1001 1000
+NOP 0000 0000 0000 0000
+SLEEP 1001 0101 1000 1000
+WDR 1001 0101 1010 1000
+
This includes: - BREAK - NOP - SLEEP - WDR Signed-off-by: Michael Rolnik <mrolnik@gmail.com> --- target/avr/translate.c | 68 ++++++++++++++++++++++++++++++++++++++++++ target/avr/insn.decode | 9 ++++++ 2 files changed, 77 insertions(+)