使用英特尔内联汇编程序实现bigint加法进位编码

#include <stdio.h>
#include <stdint.h>

void add_bigint(uint8_t *a, uint8_t *b, uint8_t *result, size_t length) {
    uint8_t carry = 0;
    for (size_t i = 0; i < length; i++) {
        uint8_t sum = a[i] + b[i] + carry;
        result[i] = sum & 0xFF;
        carry = sum >> 8;
    }
    if (carry) {
        result[length] = carry;
    }
}

int main() {
    uint8_t a[] = {0xFF, 0xFF, 0xFF, 0xFF};
    uint8_t b[] = {0x01, 0x00, 0x00, 0x00};
    uint8_t result[5];

    add_bigint(a, b, result, 4);

    for (size_t i = 0; i < 5; i++) {
        printf("%02X ", result[i]);
    }
    return 0;
}

#ifdef __x86_64__
// x86_64架构的内联汇编代码
#elif defined(__aarch64__)
// ARM64架构的内联汇编代码
#endif

void debug_print(const char *msg, uint8_t *data, size_t length) {
    printf("%s: ", msg);
    for (size_t i = 0; i < length; i++) {
        printf("%02X ", data[i]);
    }
    printf("\n");
}