54 lines
1.7 KiB
C++
54 lines
1.7 KiB
C++
#include <cstdint>
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#include "sh7091/store_queue_transfer.hpp"
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extern uint32_t __text_link_start __asm("__text_link_start");
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extern uint32_t __text_link_end __asm("__text_link_end");
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extern uint32_t __text_load_start __asm("__text_load_start");
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extern uint32_t __data_link_start __asm("__data_link_start");
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extern uint32_t __data_link_end __asm("__data_link_end");
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extern uint32_t __data_load_start __asm("__data_load_start");
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extern uint32_t __rodata_link_start __asm("__rodata_link_start");
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extern uint32_t __rodata_link_end __asm("__rodata_link_end");
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extern uint32_t __rodata_load_start __asm("__rodata_load_start");
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extern uint32_t __ctors_link_start __asm("__ctors_link_start");
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extern uint32_t __ctors_link_end __asm("__ctors_link_end");
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extern uint32_t __bss_link_start __asm("__bss_link_start");
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extern uint32_t __bss_link_end __asm("__bss_link_end");
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extern void main();
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typedef void(init_t)(void);
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void runtime_init()
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__attribute__((section(".text.start.runtime_init")));
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void runtime_init()
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{
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// relocate text (if necessary)
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//copy(&__text_link_start, &__text_link_end, &__text_load_start);
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// relocate data (if necessary)
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//copy(&__data_link_start, &__data_link_end, &__data_load_start);
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// relocate rodata (if necessary)
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//copy(&__rodata_link_start, &__rodata_link_end, &__rodata_load_start);
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// clear BSS
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uint32_t * bss_start = &__bss_link_start;
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uint32_t * bss_end = &__bss_link_end;
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int bss_length = bss_end - bss_start;
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sh7091::store_queue_transfer::zeroize(bss_start, bss_length, 0);
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// call ctors
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uint32_t * ctors_start = &__ctors_link_start;
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uint32_t * ctors_end = &__ctors_link_end;
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while (ctors_start < ctors_end) {
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((init_t *)(*ctors_start++))();
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}
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}
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