[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[PATCH rc3 13/30] target/avr: Add instruction translation - MCU Control
From: |
Aleksandar Markovic |
Subject: |
[PATCH rc3 13/30] target/avr: Add instruction translation - MCU Control Instructions |
Date: |
Sun, 26 Jan 2020 23:54:54 +0100 |
From: Michael Rolnik <address@hidden>
This includes:
- BREAK
- NOP
- SLEEP
- WDR
Signed-off-by: Michael Rolnik <address@hidden>
Signed-off-by: Richard Henderson <address@hidden>
Signed-off-by: Aleksandar Markovic <address@hidden>
---
target/avr/insn.decode | 8 ++++++
target/avr/translate.c | 68 ++++++++++++++++++++++++++++++++++++++++++++++++++
2 files changed, 76 insertions(+)
diff --git a/target/avr/insn.decode b/target/avr/insn.decode
index 4ee5586..f8d32f2 100644
--- a/target/avr/insn.decode
+++ b/target/avr/insn.decode
@@ -172,3 +172,11 @@ 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
diff --git a/target/avr/translate.c b/target/avr/translate.c
index 58775af..4c68007 100644
--- a/target/avr/translate.c
+++ b/target/avr/translate.c
@@ -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;
+}
--
2.7.4
- [PATCH rc3 06/30] target/avr: Add defintions of AVR core types, (continued)
- [PATCH rc3 06/30] target/avr: Add defintions of AVR core types, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 12/30] target/avr: Add instruction translation - Bit and Bit-test Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 14/30] target/avr: Add instruction translation - CPU main translation function, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 09/30] target/avr: Add instruction translation - Arithmetic and Logic Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 10/30] target/avr: Add instruction translation - Branch Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 03/30] target/avr: Add migration support, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 04/30] target/avr: Add GDB support, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 02/30] target/avr: Introduce AVR CPU class object, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 11/30] target/avr: Add instruction translation - Data Transfer Instructions, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 13/30] target/avr: Add instruction translation - MCU Control Instructions,
Aleksandar Markovic <=
- [PATCH rc3 21/30] target/avr: Add machine none test, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 18/30] hw/misc: Add Atmel power device, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 24/30] hw/avr: Add helper to load raw/ELF firmware binaries, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 22/30] target/avr: Update MAINTAINERS file, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 28/30] tests/boot-serial-test: Test some Arduino boards (AVR based), Aleksandar Markovic, 2020/01/26
- [PATCH rc3 27/30] target/avr: Update build system, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 29/30] tests/acceptance: Test the Arduino MEGA2560 board, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 20/30] target/avr: Register AVR support with the rest of QEMU, Aleksandar Markovic, 2020/01/26
- [PATCH rc3 15/30] target/avr: Add instruction disassembly function, Aleksandar Markovic, 2020/01/26