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Statup code: Fix zeroing of section .bss, improve initialization of .bss & .data sections #712

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Statup code: Fix zeroing of section .bss, improve initialization of .bss & .data sections #712

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bdd0b63
Zeroing of section .bss is now conditional on .bss start & end being …
merethan Oct 23, 2023
e80e035
This patch undoes a patch submitted by Cristian Maglie <c.maglie@ardu…
merethan Oct 30, 2023
4331996
Merge branch 'arduino:master' into master
merethan Jan 8, 2024
45479e1
Merge branch 'arduino:master' into master
merethan Dec 3, 2024
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12 changes: 9 additions & 3 deletions cores/arduino/cortex_handlers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -20,6 +20,9 @@
#include <variant.h>
#include <stdio.h>

/* libc */
void __libc_init_array(void);

/* RTOS Hooks */
extern void svcHook(void);
extern void pendSVHook(void);
Expand Down Expand Up @@ -146,16 +149,19 @@ void Reset_Handler(void)
pDest = &__data_start__;

if ((&__data_start__ != &__data_end__) && (pSrc != pDest)) {
for (; pDest < &__data_end__; pDest++, pSrc++)
for (; pDest < &__data_end__; pDest += sizeof(uint32_t), pSrc += sizeof(uint32_t))
*pDest = *pSrc;
}

/* Clear the zero section */
if ((&__data_start__ != &__data_end__) && (pSrc != pDest)) {
for (pDest = &__bss_start__; pDest < &__bss_end__; pDest++)
if ((&__bss_start__ != &__bss_end__)) {
for (pDest = &__bss_start__; pDest < &__bss_end__; pDest += sizeof(uint32_t))
*pDest = 0;
}

/* Initialize C library */
__libc_init_array();

SystemInit();

main();
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5 changes: 0 additions & 5 deletions cores/arduino/main.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -26,18 +26,13 @@ void initVariant() { }

extern USBDeviceClass USBDevice;

// Initialize C library
extern "C" void __libc_init_array(void);

/*
* \brief Main entry point of Arduino application
*/
int main( void )
{
init();

__libc_init_array();

initVariant();

delay(1);
Expand Down
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