56 lines
1.4 KiB
C
56 lines
1.4 KiB
C
#include <stdio.h>
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typedef struct
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{
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unsigned long h;
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unsigned long l;
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} LongNum;
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typedef unsigned char byte;
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extern void task_regs(LongNum* a, LongNum* b, LongNum* result);
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extern unsigned long task_stack(); // Для передачи через Си потребуется функцкия-обертка
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unsigned long stack_wrapper(void* arr, byte bits)
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{
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unsigned long result = 0;
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byte shift = bits >> 3;
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printf("shift is %d", shift);
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__asm__(
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"pushq %%rsp\n\t"
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"movq $2, %%rcx\n\t"
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"subq $2, %%rsp\n\t"
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"movb %2, (%%rsp)\n\t"
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"xorq %%rdx, %%rdx\n\t"
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"pop %%dx\n\t"
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"stack_push_loop:\n\t"
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"subq %%rdx, %%rsp\n\t"
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"movq (%1), %%rsp\n\t"
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"addq %%rdx, %1\n\t"
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"loopq stack_push_loop\n\t"
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"call stack_wrapper\n\t"
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"addq %%rdx, %%rdx\n\t" // умножаем на 2
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"addq %%rdx, %%rsp\n\t"
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"popq %%rsp"
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:"=a"(result)
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:"b"(arr), "d"(shift)
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:"%rcx"
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);
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result = task_stack();
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return result;
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}
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int main()
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{
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LongNum a = { 0x00000000, 0x01000000}; // По факту передача через стек)
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LongNum b = { 0x10100010, 0x0900000f};
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LongNum c;
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task_regs(&a, &b, &c);
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printf("asdfasfasfasfda %lx %lx", c.h, c.l); // Проверим, что сложили +- корректно
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int nums[2] = {88, 11};
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stack_wrapper(nums, sizeof(int));
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return 0;
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}
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