1 files changed, 128 insertions, 0 deletions
diff --git a/thirdparty/nRF5_SDK_15.0.0_a53641a/external/freertos/portable/ARM/nrf51/port.c b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/freertos/portable/ARM/nrf51/port.c
new file mode 100644
index 0000000..271c269
--- /dev/null
+++ b/thirdparty/nRF5_SDK_15.0.0_a53641a/external/freertos/portable/ARM/nrf51/port.c
@@ -0,0 +1,128 @@
+/*
+ * FreeRTOS Kernel V10.0.0
+ * Copyright (C) 2017 Amazon.com, Inc. or its affiliates.  All Rights Reserved.
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software. If you wish to use our Amazon
+ * FreeRTOS name, please do so in a fair use way that does not cause confusion.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * http://www.FreeRTOS.org
+ * http://aws.amazon.com/freertos
+ *
+ * 1 tab == 4 spaces!
+ */
+
+/*-----------------------------------------------------------
+ * Implementation of functions defined in portable.h for the ARM CM0 port.
+ *----------------------------------------------------------*/
+
+/* Scheduler includes. */
+#include "FreeRTOS.h"
+#include "task.h"
+
+/*
+ * Start first task is a separate function so it can be tested in isolation.
+ */
+void vPortStartFirstTask( void );
+
+/*
+ * Exception handlers.
+ */
+void xPortPendSVHandler( void );
+void vPortSVCHandler( void );
+
+
+/*-----------------------------------------------------------*/
+
+__asm void vPortSVCHandler( void )
+{
+    /* This function is no longer used, but retained for backward
+    compatibility. */
+}
+/*-----------------------------------------------------------*/
+
+__asm void vPortStartFirstTask( void )
+{
+    PRESERVE8
+    EXTERN __Vectors
+
+    /* Use the NVIC offset register to locate the stack. */
+    ldr r0, =__Vectors
+    ldr r0, [r0]
+    /* Set the msp back to the start of the stack. */
+    msr msp, r0
+
+    ldr r3, =pxCurrentTCB   /* Obtain location of pxCurrentTCB. */
+    ldr r1, [r3]
+    ldr r0, [r1]            /* The first item in pxCurrentTCB is the task top of stack. */
+    adds r0, #32            /* Discard everything up to r0. */
+    msr psp, r0             /* This is now the new top of stack to use in the task. */
+    movs r0, #2             /* Switch to the psp stack. */
+    msr CONTROL, r0
+    pop {r0-r5}             /* Pop the registers that are saved automatically. */
+    mov lr, r5              /* lr is now in r5. */
+    cpsie i                 /* The first task has its context and interrupts can be enabled. */
+    pop {pc}                /* Finally, pop the PC to jump to the user defined task code. */
+
+    ALIGN
+}
+/*-----------------------------------------------------------*/
+
+__asm void xPortPendSVHandler( void )
+{
+    extern vPortSafeTaskSwitchContext
+    extern pxCurrentTCB
+
+    PRESERVE8
+
+    mrs r0, psp
+
+    ldr r3, =pxCurrentTCB   /* Get the location of the current TCB. */
+    ldr r2, [r3]
+
+    subs r0, #32            /* Make space for the remaining low registers. */
+    str r0, [r2]            /* Save the new top of stack. */
+    stmia r0!, {r4-r7}      /* Store the low registers that are not saved automatically. */
+    mov r4, r8              /* Store the high registers. */
+    mov r5, r9
+    mov r6, r10
+    mov r7, r11
+    stmia r0!, {r4-r7}
+
+    push {r3, r14}
+    bl vPortSafeTaskSwitchContext
+    pop {r2, r3}            /* lr goes in r3. r2 now holds tcb pointer. */
+
+    ldr r1, [r2]
+    ldr r0, [r1]            /* The first item in pxCurrentTCB is the task top of stack. */
+    adds r0, #16            /* Move to the high registers. */
+    ldmia r0!, {r4-r7}      /* Pop the high registers. */
+    mov r8, r4
+    mov r9, r5
+    mov r10, r6
+    mov r11, r7
+
+    msr psp, r0             /* Remember the new top of stack for the task. */
+
+    subs r0, #32            /* Go back for the low registers that are not automatically restored. */
+    ldmia r0!, {r4-r7}      /* Pop low registers.  */
+
+    bx r3
+    ALIGN
+}
+/*-----------------------------------------------------------*/
+