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/*
* Copyright © Matthew Wozniak <me@woz.blue>
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED “AS IS” AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
* OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
/*
* This startup.c file is for the STM32F103C8T6 used on the bluepill boards, and
* while it may work for others I provide no guarntees.
*/
#include "intdefs.h"
#define SRAM_START (0x20000000U)
#define SRAM_SIZE (20U * 1024U)
#define SRAM_END (SRAM_START + SRAM_SIZE)
#define STACK_POINTER_INIT_ADDRESS (SRAM_END)
#include <string.h>
#define ISR_VECTOR_SIZE 76
void reset_handler();
void default_handler();
void nmi_handler() __attribute__((weak, alias("default_handler")));
void hardfault_handler() __attribute__((weak, alias("default_handler")));
void memory_management_handler() __attribute__((weak, alias("default_handler")));
void bus_fault_handler() __attribute__((weak, alias("default_handler")));
void usage_fault_handler() __attribute__((weak, alias("default_handler")));
void svcall_handler() __attribute__((weak, alias("default_handler")));
void debug_monitor_handler() __attribute__((weak, alias("default_handler")));
void pendsv_handler() __attribute__((weak, alias("default_handler")));
void systick_handler() __attribute__((weak, alias("default_handler")));
void wwdg_handler() __attribute__((weak, alias("default_handler")));
void pvd_handler() __attribute__((weak, alias("default_handler")));
void tamper_handler() __attribute__((weak, alias("default_handler")));
void rtc_handler() __attribute__((weak, alias("default_handler")));
void flash_handler() __attribute__((weak, alias("default_handler")));
void rcc_handler() __attribute__((weak, alias("default_handler")));
void exti0_handler() __attribute__((weak, alias("default_handler")));
void exti1_handler() __attribute__((weak, alias("default_handler")));
void exti2_handler() __attribute__((weak, alias("default_handler")));
void exti3_handler() __attribute__((weak, alias("default_handler")));
void exti4_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel1_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel2_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel3_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel4_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel5_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel6_handler() __attribute__((weak, alias("default_handler")));
void dma1_channel7_handler() __attribute__((weak, alias("default_handler")));
void adc_handler() __attribute__((weak, alias("default_handler")));
void usbhp_cantx_handler() __attribute__((weak, alias("default_handler")));
void usblp_canrx0_handler() __attribute__((weak, alias("default_handler")));
void canrx1_handler() __attribute__((weak, alias("default_handler")));
void cansce_handler() __attribute__((weak, alias("default_handler")));
void exti9_5_handler() __attribute__((weak, alias("default_handler")));
void tim1brk_handler() __attribute__((weak, alias("default_handler")));
void tim1up_handler() __attribute__((weak, alias("default_handler")));
void tim1trgcom_handler() __attribute__((weak, alias("default_handler")));
void tim1cc_handler() __attribute__((weak, alias("default_handler")));
void tim2_handler() __attribute__((weak, alias("default_handler")));
void tim3_handler() __attribute__((weak, alias("default_handler")));
void tim4_handler() __attribute__((weak, alias("default_handler")));
void i2c1_ev_handler() __attribute__((weak, alias("default_handler")));
void i2c1_er_handler() __attribute__((weak, alias("default_handler")));
void i2c2_ev_handler() __attribute__((weak, alias("default_handler")));
void i2c2_er_handler() __attribute__((weak, alias("default_handler")));
void spi1_handler() __attribute__((weak, alias("default_handler")));
void spi2_handler() __attribute__((weak, alias("default_handler")));
void usart1_handler() __attribute__((weak, alias("default_handler")));
void usart2_handler() __attribute__((weak, alias("default_handler")));
void usart3_handler() __attribute__((weak, alias("default_handler")));
void exti15_10_handler() __attribute__((weak, alias("default_handler")));
void rtcalarm_handler() __attribute__((weak, alias("default_handler")));
void usbwakeup_handler() __attribute__((weak, alias("default_handler")));
void tim8brk_handler() __attribute__((weak, alias("default_handler")));
void tim8up_handler() __attribute__((weak, alias("default_handler")));
void tim8trgcom_handler() __attribute__((weak, alias("default_handler")));
void tim8cc_handler() __attribute__((weak, alias("default_handler")));
void adc3_handler() __attribute__((weak, alias("default_handler")));
void fsmc_handler() __attribute__((weak, alias("default_handler")));
void sdio_handler() __attribute__((weak, alias("default_handler")));
void tim5_handler() __attribute__((weak, alias("default_handler")));
void spi3_handler() __attribute__((weak, alias("default_handler")));
void uart4_handler() __attribute__((weak, alias("default_handler")));
void uart5_handler() __attribute__((weak, alias("default_handler")));
void tim6_handler() __attribute__((weak, alias("default_handler")));
void tim7_handler() __attribute__((weak, alias("default_handler")));
void dma2_channel1_handler() __attribute__((weak, alias("default_handler")));
void dma2_channel2_handler() __attribute__((weak, alias("default_handler")));
void dma2_channel3_handler() __attribute__((weak, alias("default_handler")));
void dma2_channel4_5_handler() __attribute__((weak, alias("default_handler")));
void (*isr_vector[ISR_VECTOR_SIZE])() __attribute__((section(".isr_vector"))) = {
(void (*)())STACK_POINTER_INIT_ADDRESS,
reset_handler,
nmi_handler,
hardfault_handler,
memory_management_handler,
bus_fault_handler,
usage_fault_handler,
nullptr, /* reserved */
svcall_handler,
debug_monitor_handler,
nullptr, /* reserved */
nullptr,
nullptr,
nullptr,
pendsv_handler,
systick_handler,
wwdg_handler,
pvd_handler,
tamper_handler,
rtc_handler,
flash_handler,
rcc_handler,
exti0_handler,
exti1_handler,
exti2_handler,
exti3_handler,
exti4_handler,
dma1_channel1_handler,
dma1_channel2_handler,
dma1_channel3_handler,
dma1_channel4_handler,
dma1_channel5_handler,
dma1_channel6_handler,
dma1_channel7_handler,
adc_handler,
usbhp_cantx_handler,
usblp_canrx0_handler,
canrx1_handler,
cansce_handler,
exti9_5_handler,
tim1brk_handler,
tim1up_handler,
tim1trgcom_handler,
tim1cc_handler,
tim2_handler,
tim3_handler,
tim4_handler,
i2c1_ev_handler,
i2c1_er_handler,
i2c2_ev_handler,
i2c2_er_handler,
spi1_handler,
spi2_handler,
usart1_handler,
usart2_handler,
usart3_handler,
exti15_10_handler,
rtcalarm_handler,
usbwakeup_handler,
tim8brk_handler,
tim8up_handler,
tim8trgcom_handler,
tim8cc_handler,
adc3_handler,
fsmc_handler,
sdio_handler,
tim5_handler,
spi3_handler,
uart4_handler,
uart5_handler,
tim6_handler,
tim7_handler,
dma2_channel1_handler,
dma2_channel2_handler,
dma2_channel3_handler,
dma2_channel4_5_handler,
};
void default_handler() {
while (1) {}
}
extern u32 _etext, _sdata, _sidata, _edata, _sbss, _ebss;
int main();
void reset_handler() {
// copy .data from FLASH to SRAM
u32 data_sz = (u32)&_edata - (u32)&_sdata;
memcpy(&_sdata, &_sidata, data_sz);
// zero-fill .bss
memset(&_sbss, 0, (u32)&_ebss - (u32)&_sbss);
// run our program
main();
}
// vi: sw=4 ts=4 noet tw=80 cc=80
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