61 lines
1.5 KiB
C
61 lines
1.5 KiB
C
#include "common.h"
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void print(char* string) {
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asm volatile ("mov $0, %%eax; mov %0, %%esi; int $0x7f" : : "m" (string) : "eax", "esi");
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}
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char getch() {
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asm volatile ("mov $1, %%eax; int $0x7f" : : :);
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}
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uint8_t getchPS2() {
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asm volatile ("mov $2, %%eax; int $0x7f" : : :);
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}
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void readfile(char* filename, uint8_t* buffer) {
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asm volatile ("mov $3, %%eax; mov %0, %%esi; mov %1, %%edi; int $0x7f" : : "m" (filename), "m" (buffer) : "eax", "esi", "edi");
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}
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void* localalloc(uint32_t size) {
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asm volatile ("mov $4, %%eax; mov %0, %%esi; int $0x7f" : : "m" (size) : "esi");
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}
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void localdelete(void* ptr) {
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asm volatile ("mov $5, %%eax; mov %0, %%esi; int $0x7f" : : "m" (ptr) : "esi");
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}
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uint32_t filesize(char* filename) {
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asm volatile ("mov $6, %%eax; mov %0, %%esi; int $0x7f" : : "m" (filename) : "esi");
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}
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int int_to_decimal(unsigned int number, char* string_buffer) {
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for (int i=0; i<11; i++)
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string_buffer[i] = 0;
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int index = 9;
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unsigned int acc = number;
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if (acc == 0)
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string_buffer[index--] = '0';
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while (acc != 0) {
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string_buffer[index--] = 0x30+(acc%10);
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acc /= 10;
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}
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return (index+1);
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}
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char dec_to_hex[16] = "0123456789abcdef";
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int int_to_hex(unsigned int number, char* string_buffer) {
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for (int i=0; i<8; i++)
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string_buffer[i] = '0';
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string_buffer[8] = 0;
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int index = 7;
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unsigned int acc = number;
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if (acc == 0)
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string_buffer[index--] = '0';
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while (acc != 0) {
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string_buffer[index--] = dec_to_hex[acc%0x10];
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acc /= 0x10;
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}
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return (index+1);
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} |