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67 lines
1.9 KiB
Diff
67 lines
1.9 KiB
Diff
From ae4c3076113b0b746bea04206d0186bce99fb4d1 Mon Sep 17 00:00:00 2001
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From: Gunar Schorcht <gunar@schorcht.net>
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Date: Thu, 10 Mar 2022 13:10:23 +0100
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Subject: [PATCH 20/20] freertos/portasm: changes for RIOT for riscv32
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A number of symbols that are used by assembler code have to be mapped to existing symbols in RIOT implementation. Furthermore, the ISR stack `port_IntStack`has to be allocated.
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---
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components/freertos/port/riscv/portasm.S | 27 ++++++++++++++++++++++++
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1 file changed, 27 insertions(+)
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diff --git a/components/freertos/port/riscv/portasm.S b/components/freertos/port/riscv/portasm.S
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index 20c094b7a68..8aeabb3dedc 100644
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--- a/components/freertos/port/riscv/portasm.S
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+++ b/components/freertos/port/riscv/portasm.S
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@@ -12,6 +12,22 @@
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// See the License for the specific language governing permissions and
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// limitations under the License.
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+#ifdef RIOT_VERSION
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+#include "cpu_conf.h"
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+
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+#define pxCurrentTCB sched_active_thread
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+#define uxSchedulerRunning sched_num_threads
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+#define xPortSwitchFlag sched_context_switch_request
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+#define vTaskSwitchContext sched_run
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+#define uxInterruptNesting irq_interrupt_nesting
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+#define configISR_STACK_SIZE ESP_ISR_STACKSIZE
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+
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+.extern sched_active_thread
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+.extern sched_num_threads
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+.extern sched_context_switch_request
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+.extern irq_interrupt_nesting
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+#endif
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+
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.global uxInterruptNesting
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.global uxSchedulerRunning
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.global xIsrStackTop
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@@ -19,6 +35,14 @@
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.global vTaskSwitchContext
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.global xPortSwitchFlag
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+ .data
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+ .align 16
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+ .global port_IntStack
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+port_IntStack:
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+ .space configISR_STACK_SIZE
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+ .global port_IntStackTop
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+port_IntStackTop:
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+
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.section .text
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/**
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@@ -50,7 +74,10 @@ rtos_int_enter:
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/* Save current TCB and load the ISR stack */
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lw t0, pxCurrentTCB
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+ beq t0, zero, rtos_enter_isr_stack
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sw t2, 0x0(t0)
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+
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+rtos_enter_isr_stack:
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lw sp, xIsrStackTop
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rtos_enter_end:
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--
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2.17.1
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