adding tinyusb support

This commit is contained in:
hathach
2018-04-02 13:11:21 +07:00
parent 191d88c76b
commit d362ad1c53
16 changed files with 560 additions and 637 deletions

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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.
*
*/
#include <stdint.h>
void HardFault_Handler(void) __attribute__(( naked ));
void HardFault_Handler(void)
{
__asm volatile(
" .syntax unified \n"
" ldr r0, =0xFFFFFFFD \n"
" cmp r0, lr \n"
" bne HardFault_Handler_ChooseMSP \n"
/* Reading PSP into R0 */
" mrs r0, PSP \n"
" b HardFault_Handler_Continue \n"
"HardFault_Handler_ChooseMSP: \n"
/* Reading MSP into R0 */
" mrs r0, MSP \n"
/* -----------------------------------------------------------------
* If we have selected MSP check if we may use stack safetly.
* If not - reset the stack to the initial value. */
" ldr r1, =__StackTop \n"
" ldr r2, =__StackLimit \n"
/* MSP is in the range of <__StackTop, __StackLimit) */
" cmp r0, r1 \n"
" bhi HardFault_MoveSP \n"
" cmp r0, r2 \n"
" bhi HardFault_Handler_Continue \n"
/* ----------------------------------------------------------------- */
"HardFault_MoveSP: \n"
" mov SP, r1 \n"
" movs r0, #0 \n"
"HardFault_Handler_Continue: \n"
" ldr r3, =HardFault_c_handler \n"
" bx r3 \n"
" .align \n"
);
}

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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.
*
*/
#include <stdint.h>
#pragma section = "CSTACK"
extern void HardFault_c_handler( uint32_t * );
__stackless void HardFault_Handler(void);
__stackless void HardFault_Handler(void)
{
__asm volatile(
" ldr r0, 100f \n"
" cmp r0, lr \n"
" bne 1f \n"
/* Reading PSP into R0 */
" mrs r0, PSP \n"
" b 3f \n"
"1: \n"
/* Reading MSP into R0 */
" mrs r0, MSP \n"
/* -----------------------------------------------------------------
* If we have selected MSP check if we may use stack safetly.
* If not - reset the stack to the initial value. */
" ldr r1, 101f \n"
" ldr r2, 102f \n"
/* MSP is in the range of <__StackTop, __StackLimit) */
" cmp r0, r1 \n"
" bhi 2f \n"
" cmp r0, r2 \n"
" bhi 3f \n"
/* ----------------------------------------------------------------- */
"2: \n"
" mov SP, r1 \n"
" movs r0, #0 \n"
"3: \n"
" ldr r3, 103f \n"
" bx r3 \n"
"100: \n"
" DC32 0xFFFFFFFD \n"
"101: \n"
" DC32 %c0 \n"
"102: \n"
" DC32 %c1 \n"
"103: \n"
" DC32 %c2 \n"
: /* Outputs */
: /* Inputs */
"i"(__section_end("CSTACK")),
"i"(__section_begin("CSTACK")),
"i"(&HardFault_c_handler)
);
}

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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.
*
*/
#include <stdint.h>
//lint -save -e27 -e10 -e19 -e40
extern char STACK$$Base;
/* This variable should be static but then it cannot be used in assembly code below.
* The problem here is that the address of the section can be archived by $$ operator
* that is not allowed in assembly code. */
char const * HardFault_Handler_stack_bottom = &STACK$$Base;
//lint -restore
__asm void HardFault_Handler(void)
{
PRESERVE8
EXTERN HardFault_c_handler
EXTERN __initial_sp
EXTERN HardFault_Handler_stack_bottom
ldr r0, =0xFFFFFFFD
cmp r0, lr
bne HardFault_Handler_ChooseMSP
/* Reading PSP into R0 */
mrs r0, PSP
b HardFault_Handler_Continue
HardFault_Handler_ChooseMSP
/* Reading MSP into R0 */
mrs r0, MSP
/* -----------------------------------------------------------------
* If we have selected MSP, check if we may use stack safely.
* If not - reset the stack to the initial value. */
ldr r1, =__initial_sp
ldr r2, =HardFault_Handler_stack_bottom
ldr r2, [r2]
/* MSP is in the range of <__StackTop, __StackLimit) */
cmp r0, r1
bhi HardFault_MoveSP
cmp r0, r2
bhi HardFault_Handler_Continue
/* ----------------------------------------------------------------- */
HardFault_MoveSP
mov SP, r1
movs r0, #0
HardFault_Handler_Continue
ldr r3, =HardFault_c_handler
bx r3
ALIGN
}

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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.
*
*/
#include <stdint.h>
#pragma section = "CSTACK"
extern void HardFault_c_handler( uint32_t * );
__stackless void HardFault_Handler(void);
__stackless void HardFault_Handler(void)
{
__asm volatile(
" ldr.n r3, 103f \n"
" tst lr, #4 \n"
/* PSP is quite simple and does not require additional handler */
" itt ne \n"
" mrsne r0, psp \n"
/* Jump to the handler, do not store LR - returning from handler just exits exception */
" bxne r3 \n"
/* Processing MSP requires stack checking */
" mrs r0, msp \n"
" ldr.n r1, 101f \n"
" ldr.n r2, 102f \n"
/* MSP is in the range of <__StackTop, __StackLimit) */
" cmp r0, r1 \n"
" bhi.n 1f \n"
" cmp r0, r2 \n"
" bhi.n 2f \n"
"1: \n"
" mov sp, r1 \n"
" mov r0, #0 \n"
"2: \n"
" bx r3 \n"
/* Data alignment if required */
" nop \n"
"101: \n"
" DC32 %c0 \n"
"102: \n"
" DC32 %c1 \n"
"103: \n"
" DC32 %c2 \n"
: /* Outputs */
: /* Inputs */
"i"(__section_end("CSTACK")),
"i"(__section_begin("CSTACK")),
"i"(&HardFault_c_handler)
);
}

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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.
*
*/
#include <stdint.h>
//lint -save -e27 -e10 -e19 -e40
extern char STACK$$Base;
/* This variable should be static but then it cannot be used in assembly code below.
* The problem here is that the address of the section can be archived by $$ operator
* that is not allowed in assembly code. */
char const * HardFault_Handler_stack_bottom = &STACK$$Base;
//lint -restore
__asm void HardFault_Handler(void)
{
PRESERVE8
EXTERN HardFault_c_handler
EXTERN __initial_sp
EXTERN HardFault_Handler_stack_bottom
ldr r3, =HardFault_c_handler
tst lr, #4
/* PSP is quite simple and does not require additional handler */
itt ne
mrsne r0, psp
/* Jump to the handler, do not store LR - returning from handler just exits exception */
bxne r3
/* Processing MSP requires stack checking */
mrs r0, msp
ldr r1, =__initial_sp
ldr r2, =HardFault_Handler_stack_bottom
ldr r2, [r2]
/* MSP is in the range of <__StackTop, __StackLimit) */
cmp r0, r1
bhi HardFault_MoveSP
cmp r0, r2
bhi HardFault_Handler_Continue
HardFault_MoveSP
mov sp, r1
mov r0, #0
HardFault_Handler_Continue
bx r3
ALIGN
}