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The following commit(s) were added to refs/heads/master by this push:
new 00efcd3 arch/risc-v: Merge riscv_getnewintctx into common
00efcd3 is described below
commit 00efcd33082192bc33d0b1d0c12ad9b47e7ecd0a
Author: Huang Qi <huang...@xiaomi.com>
AuthorDate: Fri Mar 18 12:20:15 2022 +0800
arch/risc-v: Merge riscv_getnewintctx into common
And also mask the bits which should be preserved (from ISA spec)
Signed-off-by: Huang Qi <huang...@xiaomi.com>
---
arch/risc-v/include/csr.h | 8 ++++
arch/risc-v/src/bl602/Make.defs | 2 +-
arch/risc-v/src/bl602/bl602_irq.c | 23 ----------
arch/risc-v/src/c906/Make.defs | 2 +-
arch/risc-v/src/c906/c906_irq.c | 27 -----------
arch/risc-v/src/common/riscv_getnewintctx.c | 71 +++++++++++++++++++++++++++++
arch/risc-v/src/esp32c3/Make.defs | 2 +-
arch/risc-v/src/esp32c3/esp32c3_irq.c | 19 --------
arch/risc-v/src/fe310/Make.defs | 2 +-
arch/risc-v/src/fe310/fe310_irq.c | 19 --------
arch/risc-v/src/k210/Make.defs | 2 +-
arch/risc-v/src/k210/k210_irq.c | 23 ----------
arch/risc-v/src/litex/Make.defs | 2 +-
arch/risc-v/src/litex/litex_irq.c | 19 --------
arch/risc-v/src/mpfs/Make.defs | 2 +-
arch/risc-v/src/mpfs/mpfs_irq.c | 27 -----------
arch/risc-v/src/qemu-rv/Make.defs | 2 +-
arch/risc-v/src/qemu-rv/qemu_rv_irq.c | 24 ----------
arch/risc-v/src/rv32m1/Make.defs | 2 +-
arch/risc-v/src/rv32m1/rv32m1_irq.c | 19 --------
20 files changed, 88 insertions(+), 209 deletions(-)
diff --git a/arch/risc-v/include/csr.h b/arch/risc-v/include/csr.h
index 16c3d9b..a5cb948 100644
--- a/arch/risc-v/include/csr.h
+++ b/arch/risc-v/include/csr.h
@@ -307,6 +307,14 @@
#define MSTATUS_FS_CLEAN (0x2 << 13)
#define MSTATUS_FS_DIRTY (0x3 << 13)
+/* Mask of preserved bits for mstatus */
+
+#ifdef CONFIG_ARCH_RV32
+#define MSTATUS_WPRI (0xff << 23 | 0x15)
+#else
+#define MSTATUS_WPRI (UINT64_C(0x1ffffff) << 38 | UINT64_C(0x1ff) << 23 |
0x15)
+#endif
+
/* In mie (machine interrupt enable) register */
#define MIE_MSIE (0x1 << 3) /* Machine Software Interrupt Enable */
diff --git a/arch/risc-v/src/bl602/Make.defs b/arch/risc-v/src/bl602/Make.defs
index ece57c5..251f198 100644
--- a/arch/risc-v/src/bl602/Make.defs
+++ b/arch/risc-v/src/bl602/Make.defs
@@ -33,7 +33,7 @@ CMN_CSRCS += riscv_interruptcontext.c riscv_modifyreg32.c
riscv_puts.c riscv_mde
CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_udelay.c riscv_unblocktask.c
riscv_usestack.c
-CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c
+CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/bl602/bl602_irq.c
b/arch/risc-v/src/bl602/bl602_irq.c
index 0a0a7e3..9540f79 100644
--- a/arch/risc-v/src/bl602/bl602_irq.c
+++ b/arch/risc-v/src/bl602/bl602_irq.c
@@ -164,29 +164,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
-#ifdef CONFIG_ARCH_FPU
- return (mstatus | MSTATUS_FS_INIT | MSTATUS_MPPM | MSTATUS_MPIE);
-#else
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-#endif
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/c906/Make.defs b/arch/risc-v/src/c906/Make.defs
index 53447d8..75c6cdd 100644
--- a/arch/risc-v/src/c906/Make.defs
+++ b/arch/risc-v/src/c906/Make.defs
@@ -34,7 +34,7 @@ CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_unblocktask.c riscv_usestack.c
CMN_CSRCS += riscv_mdelay.c riscv_copyfullstate.c riscv_idle.c
-CMN_CSRCS += riscv_tcbinfo.c
+CMN_CSRCS += riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/c906/c906_irq.c b/arch/risc-v/src/c906/c906_irq.c
index feb9168..e315b74 100644
--- a/arch/risc-v/src/c906/c906_irq.c
+++ b/arch/risc-v/src/c906/c906_irq.c
@@ -195,33 +195,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode. Reegardless of
- * how NuttX is configured and of what kind of thread is being started.
- * That is because all threads, even user-mode threads will start in
- * kernel trampoline at nxtask_start() or pthread_start().
- * The thread's privileges will be dropped before transitioning to
- * user code. Also set machine previous interrupt enable.
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
-#ifdef CONFIG_ARCH_FPU
- return (mstatus | MSTATUS_FS_INIT | MSTATUS_MPPM | MSTATUS_MPIE);
-#else
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-#endif
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/common/riscv_getnewintctx.c
b/arch/risc-v/src/common/riscv_getnewintctx.c
new file mode 100644
index 0000000..04180f7
--- /dev/null
+++ b/arch/risc-v/src/common/riscv_getnewintctx.c
@@ -0,0 +1,71 @@
+/****************************************************************************
+ * arch/risc-v/src/common/riscv_getnewintctx.c
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements. See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership. The
+ * ASF licenses this file to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance with the
+ * License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+ * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+ * License for the specific language governing permissions and limitations
+ * under the License.
+ *
+ ****************************************************************************/
+
+/****************************************************************************
+ * Included Files
+ ****************************************************************************/
+
+#include <nuttx/config.h>
+
+#include <stdint.h>
+#include <stdio.h>
+#include <assert.h>
+#include <debug.h>
+
+#include <nuttx/arch.h>
+#include <arch/irq.h>
+#include <arch/csr.h>
+
+#include "riscv_internal.h"
+
+/****************************************************************************
+ * Public Functions
+ ****************************************************************************/
+
+/****************************************************************************
+ * Name: riscv_get_newintctx
+ *
+ * Description:
+ * Return initial mstatus when a task is created.
+ *
+ ****************************************************************************/
+
+uintptr_t riscv_get_newintctx(void)
+{
+ /* Set machine previous privilege mode to machine mode. Reegardless of
+ * how NuttX is configured and of what kind of thread is being started.
+ * That is because all threads, even user-mode threads will start in
+ * kernel trampoline at nxtask_start() or pthread_start().
+ * The thread's privileges will be dropped before transitioning to
+ * user code. Also set machine previous interrupt enable.
+ *
+ * Mask the bits which should be preserved (from ISA spec)
+ */
+
+ uintptr_t mstatus = READ_CSR(mstatus);
+
+ mstatus &= MSTATUS_WPRI;
+
+ return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE
+#ifdef CONFIG_ARCH_FPU
+ | MSTATUS_FS_INIT
+#endif
+ );
+}
diff --git a/arch/risc-v/src/esp32c3/Make.defs
b/arch/risc-v/src/esp32c3/Make.defs
index 318ed80..bfa54a7 100644
--- a/arch/risc-v/src/esp32c3/Make.defs
+++ b/arch/risc-v/src/esp32c3/Make.defs
@@ -36,7 +36,7 @@ CMN_CSRCS += riscv_interruptcontext.c riscv_modifyreg32.c
riscv_puts.c riscv_mde
CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_udelay.c riscv_unblocktask.c
riscv_usestack.c
-CMN_CSRCS += riscv_tcbinfo.c
+CMN_CSRCS += riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/esp32c3/esp32c3_irq.c
b/arch/risc-v/src/esp32c3/esp32c3_irq.c
index 27a8e56..ad247d0 100644
--- a/arch/risc-v/src/esp32c3/esp32c3_irq.c
+++ b/arch/risc-v/src/esp32c3/esp32c3_irq.c
@@ -135,25 +135,6 @@ void up_irqinitialize(void)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-}
-
-/****************************************************************************
* Name: up_enable_irq
*
* Description:
diff --git a/arch/risc-v/src/fe310/Make.defs b/arch/risc-v/src/fe310/Make.defs
index e8e6252..dcb6338 100644
--- a/arch/risc-v/src/fe310/Make.defs
+++ b/arch/risc-v/src/fe310/Make.defs
@@ -33,7 +33,7 @@ CMN_CSRCS += riscv_interruptcontext.c riscv_modifyreg32.c
riscv_puts.c riscv_mde
CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_udelay.c riscv_unblocktask.c
riscv_usestack.c
-CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c
+CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/fe310/fe310_irq.c
b/arch/risc-v/src/fe310/fe310_irq.c
index 7397a57..9e0e17a 100644
--- a/arch/risc-v/src/fe310/fe310_irq.c
+++ b/arch/risc-v/src/fe310/fe310_irq.c
@@ -166,25 +166,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/k210/Make.defs b/arch/risc-v/src/k210/Make.defs
index 20e8d43..38ac64f 100644
--- a/arch/risc-v/src/k210/Make.defs
+++ b/arch/risc-v/src/k210/Make.defs
@@ -34,7 +34,7 @@ CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_unblocktask.c riscv_usestack.c
CMN_CSRCS += riscv_mdelay.c riscv_copyfullstate.c riscv_idle.c
-CMN_CSRCS += riscv_tcbinfo.c riscv_cpuidlestack.c
+CMN_CSRCS += riscv_tcbinfo.c riscv_cpuidlestack.c riscv_getnewintctx.c
ifeq ($(CONFIG_SMP), y)
CMN_CSRCS += riscv_cpuindex.c riscv_cpupause.c riscv_cpustart.c
diff --git a/arch/risc-v/src/k210/k210_irq.c b/arch/risc-v/src/k210/k210_irq.c
index b6143e5..983c6c8 100644
--- a/arch/risc-v/src/k210/k210_irq.c
+++ b/arch/risc-v/src/k210/k210_irq.c
@@ -211,29 +211,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode. Reegardless of
- * how NuttX is configured and of what kind of thread is being started.
- * That is because all threads, even user-mode threads will start in
- * kernel trampoline at nxtask_start() or pthread_start().
- * The thread's privileges will be dropped before transitioning to
- * user code. Also set machine previous interrupt enable.
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/litex/Make.defs b/arch/risc-v/src/litex/Make.defs
index d33fd8f..f992c6b 100644
--- a/arch/risc-v/src/litex/Make.defs
+++ b/arch/risc-v/src/litex/Make.defs
@@ -33,7 +33,7 @@ CMN_CSRCS += riscv_interruptcontext.c riscv_modifyreg32.c
riscv_puts.c riscv_mde
CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_udelay.c riscv_unblocktask.c
riscv_usestack.c
-CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c
+CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/litex/litex_irq.c
b/arch/risc-v/src/litex/litex_irq.c
index fa12ac0..e1df1d3 100644
--- a/arch/risc-v/src/litex/litex_irq.c
+++ b/arch/risc-v/src/litex/litex_irq.c
@@ -172,25 +172,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/mpfs/Make.defs b/arch/risc-v/src/mpfs/Make.defs
index 460d5c7..e46bf5e 100755
--- a/arch/risc-v/src/mpfs/Make.defs
+++ b/arch/risc-v/src/mpfs/Make.defs
@@ -31,7 +31,7 @@ CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_unblocktask.c riscv_usestack.c
CMN_CSRCS += riscv_mdelay.c riscv_udelay.c riscv_copyfullstate.c
-CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c
+CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_getnewintctx.c
CMN_CSRCS += riscv_cpuindex.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
diff --git a/arch/risc-v/src/mpfs/mpfs_irq.c b/arch/risc-v/src/mpfs/mpfs_irq.c
index f7bf10a..c99574a 100755
--- a/arch/risc-v/src/mpfs/mpfs_irq.c
+++ b/arch/risc-v/src/mpfs/mpfs_irq.c
@@ -206,33 +206,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode. Reegardless of
- * how NuttX is configured and of what kind of thread is being started.
- * That is because all threads, even user-mode threads will start in
- * kernel trampoline at nxtask_start() or pthread_start().
- * The thread's privileges will be dropped before transitioning to
- * user code. Also set machine previous interrupt enable.
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
-#ifdef CONFIG_ARCH_FPU
- return (mstatus | MSTATUS_FS_INIT | MSTATUS_MPPM | MSTATUS_MPIE);
-#else
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-#endif
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
diff --git a/arch/risc-v/src/qemu-rv/Make.defs
b/arch/risc-v/src/qemu-rv/Make.defs
index f45d036..a867002 100644
--- a/arch/risc-v/src/qemu-rv/Make.defs
+++ b/arch/risc-v/src/qemu-rv/Make.defs
@@ -34,7 +34,7 @@ CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_unblocktask.c riscv_usestack.c
CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_cpuidlestack.c
-CMN_CSRCS += riscv_fault.c
+CMN_CSRCS += riscv_fault.c riscv_getnewintctx.c
ifeq ($(CONFIG_SMP), y)
CMN_CSRCS += riscv_cpuindex.c riscv_cpupause.c riscv_cpustart.c
diff --git a/arch/risc-v/src/qemu-rv/qemu_rv_irq.c
b/arch/risc-v/src/qemu-rv/qemu_rv_irq.c
index 55cdfc1..a309cf8 100644
--- a/arch/risc-v/src/qemu-rv/qemu_rv_irq.c
+++ b/arch/risc-v/src/qemu-rv/qemu_rv_irq.c
@@ -205,27 +205,3 @@ irqstate_t up_irq_enable(void)
oldstat = READ_AND_SET_CSR(mstatus, MSTATUS_MIE);
return oldstat;
}
-
-/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- * Note: In qemu, FPU is always exist even if don't use F|D ISA extension
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
-#ifdef CONFIG_ARCH_FPU
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE | MSTATUS_FS_INIT);
-#else
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-#endif
-}
diff --git a/arch/risc-v/src/rv32m1/Make.defs b/arch/risc-v/src/rv32m1/Make.defs
index e360cf2..f44ea46 100644
--- a/arch/risc-v/src/rv32m1/Make.defs
+++ b/arch/risc-v/src/rv32m1/Make.defs
@@ -33,7 +33,7 @@ CMN_CSRCS += riscv_interruptcontext.c riscv_modifyreg32.c
riscv_puts.c
CMN_CSRCS += riscv_releasepending.c riscv_reprioritizertr.c
riscv_copyfullstate.c
CMN_CSRCS += riscv_releasestack.c riscv_stackframe.c riscv_schedulesigaction.c
CMN_CSRCS += riscv_sigdeliver.c riscv_unblocktask.c riscv_usestack.c
-CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c
+CMN_CSRCS += riscv_idle.c riscv_tcbinfo.c riscv_getnewintctx.c
ifeq ($(CONFIG_SCHED_BACKTRACE),y)
CMN_CSRCS += riscv_backtrace.c
diff --git a/arch/risc-v/src/rv32m1/rv32m1_irq.c
b/arch/risc-v/src/rv32m1/rv32m1_irq.c
index 2b410d7..7692a0b 100644
--- a/arch/risc-v/src/rv32m1/rv32m1_irq.c
+++ b/arch/risc-v/src/rv32m1/rv32m1_irq.c
@@ -214,25 +214,6 @@ void up_enable_irq(int irq)
}
/****************************************************************************
- * Name: riscv_get_newintctx
- *
- * Description:
- * Return initial mstatus when a task is created.
- *
- ****************************************************************************/
-
-uintptr_t riscv_get_newintctx(void)
-{
- /* Set machine previous privilege mode to machine mode.
- * Also set machine previous interrupt enable
- */
-
- uintptr_t mstatus = READ_CSR(mstatus);
-
- return (mstatus | MSTATUS_MPPM | MSTATUS_MPIE);
-}
-
-/****************************************************************************
* Name: riscv_ack_irq
*
* Description:
