adding tinyusb support
This commit is contained in:
		@@ -1,52 +0,0 @@
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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 *
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 * The information contained herein is property of Nordic Semiconductor ASA.
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 * Terms and conditions of usage are described in detail in NORDIC
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 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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 *
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 * Licensees are granted free, non-transferable use of the information. NO
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 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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 * the file.
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 *
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 */
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#include <stdint.h>
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void HardFault_Handler(void) __attribute__(( naked ));
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void HardFault_Handler(void)
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{
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    __asm volatile(
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    "   .syntax unified                        \n"
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    "   ldr   r0, =0xFFFFFFFD                  \n"
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    "   cmp   r0, lr                           \n"
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    "   bne   HardFault_Handler_ChooseMSP      \n"
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    /* Reading PSP into R0 */
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    "   mrs   r0, PSP                          \n"
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    "   b     HardFault_Handler_Continue       \n"
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    "HardFault_Handler_ChooseMSP:              \n"
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    /* Reading MSP into R0 */
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    "   mrs   r0, MSP                          \n"
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    /* -----------------------------------------------------------------
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     * If we have selected MSP check if we may use stack safetly.
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     * If not - reset the stack to the initial value. */
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    "   ldr   r1, =__StackTop                  \n"
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    "   ldr   r2, =__StackLimit                \n"
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    /* MSP is in the range of <__StackTop, __StackLimit) */
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    "   cmp   r0, r1                           \n"
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    "   bhi   HardFault_MoveSP                 \n"
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    "   cmp   r0, r2                           \n"
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    "   bhi   HardFault_Handler_Continue       \n"
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    /* ----------------------------------------------------------------- */
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    "HardFault_MoveSP:                         \n"
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    "   mov   SP, r1                           \n"
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    "   movs  r0, #0                           \n"
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    "HardFault_Handler_Continue:               \n"
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    "   ldr r3, =HardFault_c_handler           \n"
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    "   bx r3                                  \n"
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    "   .align                                 \n"
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    );
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}
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@@ -1,65 +0,0 @@
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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 *
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 * The information contained herein is property of Nordic Semiconductor ASA.
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		||||
 * Terms and conditions of usage are described in detail in NORDIC
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 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
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		||||
 *
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		||||
 * Licensees are granted free, non-transferable use of the information. NO
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		||||
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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 * the file.
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 *
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 */
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#include <stdint.h>
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#pragma section = "CSTACK"
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extern void HardFault_c_handler( uint32_t * );
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__stackless void HardFault_Handler(void);
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__stackless void HardFault_Handler(void)
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{
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    __asm volatile(
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    "   ldr   r0, 100f                         \n"
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    "   cmp   r0, lr                           \n"
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    "   bne   1f                               \n"
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    /* Reading PSP into R0 */
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    "   mrs   r0, PSP                          \n"
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    "   b     3f                               \n"
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    "1:                                        \n"
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    /* Reading MSP into R0 */
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    "   mrs   r0, MSP                          \n"
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    /* -----------------------------------------------------------------
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     * If we have selected MSP check if we may use stack safetly.
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     * If not - reset the stack to the initial value. */
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    "   ldr   r1, 101f                         \n"
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    "   ldr   r2, 102f                         \n"
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    /* MSP is in the range of <__StackTop, __StackLimit) */
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    "   cmp   r0, r1                           \n"
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    "   bhi   2f                               \n"
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    "   cmp   r0, r2                           \n"
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    "   bhi   3f                               \n"
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    /* ----------------------------------------------------------------- */
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    "2:                                        \n"
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    "   mov   SP, r1                           \n"
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    "   movs  r0, #0                           \n"
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    "3:                                        \n"
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    "   ldr r3, 103f                           \n"
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    "   bx r3                                  \n"
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    "100:                                      \n"
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    "   DC32 0xFFFFFFFD                        \n"
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    "101:                                      \n"
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    "   DC32 %c0                               \n"
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    "102:                                      \n"
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    "   DC32 %c1                               \n"
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    "103:                                      \n"
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    "   DC32 %c2                               \n"
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    : /* Outputs */
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    : /* Inputs */
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    "i"(__section_end("CSTACK")),
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    "i"(__section_begin("CSTACK")),
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    "i"(&HardFault_c_handler)
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    );
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}
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@@ -1,61 +0,0 @@
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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 *
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		||||
 * The information contained herein is property of Nordic Semiconductor ASA.
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		||||
 * Terms and conditions of usage are described in detail in NORDIC
 | 
			
		||||
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 | 
			
		||||
 *
 | 
			
		||||
 * Licensees are granted free, non-transferable use of the information. NO
 | 
			
		||||
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
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		||||
 * the file.
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 *
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 */
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#include <stdint.h>
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//lint -save -e27 -e10 -e19 -e40
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extern char STACK$$Base;
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/* This variable should be static but then it cannot be used in assembly code below.
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 * The problem here is that the address of the section can be archived by $$ operator
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 * that is not allowed in assembly code. */
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char const * HardFault_Handler_stack_bottom = &STACK$$Base;
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//lint -restore
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__asm void HardFault_Handler(void)
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{
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    PRESERVE8
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    EXTERN HardFault_c_handler
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    EXTERN __initial_sp
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    EXTERN HardFault_Handler_stack_bottom
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    ldr   r0, =0xFFFFFFFD
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    cmp   r0, lr
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    bne   HardFault_Handler_ChooseMSP
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    /* Reading PSP into R0 */
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    mrs   r0, PSP
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    b     HardFault_Handler_Continue
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HardFault_Handler_ChooseMSP
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    /* Reading MSP into R0 */
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    mrs   r0, MSP
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    /* -----------------------------------------------------------------
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     * If we have selected MSP, check if we may use stack safely.
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     * If not - reset the stack to the initial value. */
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    ldr   r1, =__initial_sp
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    ldr   r2, =HardFault_Handler_stack_bottom
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    ldr   r2, [r2]
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    /* MSP is in the range of <__StackTop, __StackLimit) */
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    cmp   r0, r1
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    bhi   HardFault_MoveSP
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    cmp   r0, r2
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    bhi   HardFault_Handler_Continue
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    /* ----------------------------------------------------------------- */
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HardFault_MoveSP
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    mov   SP, r1
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    movs  r0, #0
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HardFault_Handler_Continue
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    ldr r3, =HardFault_c_handler
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    bx r3
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    ALIGN
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}
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@@ -1,64 +0,0 @@
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
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		||||
 *
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		||||
 * The information contained herein is property of Nordic Semiconductor ASA.
 | 
			
		||||
 * Terms and conditions of usage are described in detail in NORDIC
 | 
			
		||||
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 | 
			
		||||
 *
 | 
			
		||||
 * Licensees are granted free, non-transferable use of the information. NO
 | 
			
		||||
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 | 
			
		||||
 * the file.
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		||||
 *
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 */
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#include <stdint.h>
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#pragma section = "CSTACK"
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extern void HardFault_c_handler( uint32_t * );
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__stackless void HardFault_Handler(void);
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__stackless void HardFault_Handler(void)
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{
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    __asm volatile(
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    "   ldr.n r3, 103f                          \n"
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    "   tst   lr, #4                            \n"
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    /* PSP is quite simple and does not require additional handler */
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    "   itt   ne                                \n"
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    "   mrsne r0, psp                           \n"
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    /* Jump to the handler, do not store LR - returning from handler just exits exception */
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    "   bxne  r3                                \n"
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    /* Processing MSP requires stack checking */
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    "   mrs r0, msp                             \n"
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    "   ldr.n r1, 101f                          \n"
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    "   ldr.n r2, 102f                          \n"
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    /* MSP is in the range of <__StackTop, __StackLimit) */
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    "   cmp   r0, r1                            \n"
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    "   bhi.n 1f                                \n"
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    "   cmp   r0, r2                            \n"
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    "   bhi.n 2f                                \n"
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    "1:                                         \n"
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    "   mov   sp, r1                            \n"
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    "   mov   r0, #0                            \n"
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    "2:                                         \n"
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    "   bx r3                                   \n"
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    /* Data alignment if required */
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    "   nop                                     \n"
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    "101:                                       \n"
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    "   DC32 %c0                                \n"
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    "102:                                       \n"
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    "   DC32 %c1                                \n"
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    "103:                                       \n"
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    "   DC32 %c2                                \n"
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    : /* Outputs */
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    : /* Inputs */
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    "i"(__section_end("CSTACK")),
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    "i"(__section_begin("CSTACK")),
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    "i"(&HardFault_c_handler)
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    );
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}
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@@ -1,60 +0,0 @@
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/* Copyright (c) 2015 Nordic Semiconductor. All Rights Reserved.
 | 
			
		||||
 *
 | 
			
		||||
 * The information contained herein is property of Nordic Semiconductor ASA.
 | 
			
		||||
 * Terms and conditions of usage are described in detail in NORDIC
 | 
			
		||||
 * SEMICONDUCTOR STANDARD SOFTWARE LICENSE AGREEMENT.
 | 
			
		||||
 *
 | 
			
		||||
 * Licensees are granted free, non-transferable use of the information. NO
 | 
			
		||||
 * WARRANTY of ANY KIND is provided. This heading must NOT be removed from
 | 
			
		||||
 * the file.
 | 
			
		||||
 *
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		||||
 */
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#include <stdint.h>
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//lint -save -e27 -e10 -e19 -e40
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extern char STACK$$Base;
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/* This variable should be static but then it cannot be used in assembly code below.
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 * The problem here is that the address of the section can be archived by $$ operator
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 * that is not allowed in assembly code. */
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char const * HardFault_Handler_stack_bottom = &STACK$$Base;
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//lint -restore
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__asm void HardFault_Handler(void)
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{
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    PRESERVE8
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    EXTERN HardFault_c_handler
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    EXTERN __initial_sp
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    EXTERN HardFault_Handler_stack_bottom
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    ldr r3, =HardFault_c_handler
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    tst lr, #4
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    /* PSP is quite simple and does not require additional handler */
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    itt ne
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    mrsne r0, psp
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    /* Jump to the handler, do not store LR - returning from handler just exits exception */
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    bxne  r3
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    /* Processing MSP requires stack checking */
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    mrs r0, msp
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    ldr   r1, =__initial_sp
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    ldr   r2, =HardFault_Handler_stack_bottom
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    ldr   r2, [r2]
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    /* MSP is in the range of <__StackTop, __StackLimit) */
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    cmp   r0, r1
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    bhi   HardFault_MoveSP
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    cmp   r0, r2
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    bhi   HardFault_Handler_Continue
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HardFault_MoveSP
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    mov   sp, r1
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    mov   r0, #0
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HardFault_Handler_Continue
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    bx r3
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    ALIGN
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}
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