f47e214cdc
This commit renames the NORETURN macro, indicating to the compiler
that a function does not return, into MP_NORETURN to maintain the same
naming convention of other similar macros.
To maintain compaitiblity with existing code NORETURN is aliased to
MP_NORETURN, but it is also deprecated for MicroPython v2.
This changeset was created using a similar process to
decf8e6a8b ("all: Remove the "STATIC"
macro and just use "static" instead."), with no documentation or python
scripts to change to reflect the new macro name.
Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
139 lines
3.7 KiB
C
139 lines
3.7 KiB
C
/*
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* This file is part of the MicroPython project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2018-2021 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include <stdint.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include "py/runtime.h"
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#include "shared/runtime/semihosting_arm.h"
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#include "uart.h"
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extern uint32_t _estack, _sidata, _sdata, _edata, _sbss, _ebss;
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__attribute__((naked)) void Reset_Handler(void) {
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// set stack pointer
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__asm volatile ("ldr r0, =_estack");
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__asm volatile ("mov sp, r0");
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// copy .data section from flash to RAM
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for (uint32_t *src = &_sidata, *dest = &_sdata; dest < &_edata;) {
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*dest++ = *src++;
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}
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// zero out .bss section
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for (uint32_t *dest = &_sbss; dest < &_ebss;) {
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*dest++ = 0;
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}
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// jump to board initialisation
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void _start(void);
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_start();
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}
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MP_NORETURN void Default_Handler(void) {
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for (;;) {
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}
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}
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#if defined(__ARM_ARCH_ISA_ARM)
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// ARM architecture with standard ARM ISA.
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__attribute__((naked, section(".isr_vector"))) void isr_vector(void) {
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__asm volatile (
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"b Reset_Handler\n"
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"b Default_Handler\n"
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"b Default_Handler\n"
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"b Default_Handler\n"
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"b Default_Handler\n"
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"nop\n"
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"b Default_Handler\n"
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"b Default_Handler\n"
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);
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}
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#elif defined(__ARM_ARCH_ISA_THUMB)
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extern void NMI_Handler(void);
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extern void HardFault_Handler(void);
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extern void MemManage_Handler(void);
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extern void BusFault_Handler(void);
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extern void UsageFault_Handler(void);
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extern void SVC_Handler(void);
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extern void DebugMon_Handler(void);
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extern void PendSV_Handler(void);
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extern void SysTick_Handler(void);
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// ARM architecture with Thumb-only ISA.
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const uint32_t isr_vector[] __attribute__((section(".isr_vector"))) = {
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(uint32_t)&_estack,
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(uint32_t)&Reset_Handler,
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(uint32_t)&NMI_Handler,
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(uint32_t)&HardFault_Handler,
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(uint32_t)&MemManage_Handler,
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(uint32_t)&BusFault_Handler,
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(uint32_t)&UsageFault_Handler,
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0,
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0,
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0,
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0,
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(uint32_t)&SVC_Handler,
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(uint32_t)&DebugMon_Handler,
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0,
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(uint32_t)&PendSV_Handler,
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(uint32_t)&SysTick_Handler,
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};
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#endif
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void _start(void) {
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mp_semihosting_init();
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// Enable the UART
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uart_init();
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// Now that we have a basic system up and running we can call main
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extern int main();
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main(0, 0);
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// Finished
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exit(0);
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}
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void exit(int status) {
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// Force qemu to exit using ARM Semihosting
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mp_semihosting_exit(status);
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for (;;) {
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}
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}
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#ifndef NDEBUG
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void __assert_func(const char *file, int line, const char *func, const char *expr) {
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(void)func;
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printf("Assertion '%s' failed, at file %s:%d\n", expr, file, line);
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exit(1);
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}
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#endif
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