27 lines
704 B
C
27 lines
704 B
C
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#include <stdint.h>
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#include "lib/print.h"
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typedef struct registers {
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uint32_t gs, fs, es, ds; // Pushed manually
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uint32_t edi, esi, ebp, esp, ebx, edx, ecx, eax; // Pushed by pusha
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uint32_t int_no, err_code; // Pushed manually
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uint32_t eip, cs, eflags, useresp, ss; // Pushed automatically by CPU
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} registers_t;
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int32_t sys_vga_text_write(char* buf);
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int32_t syscall(registers_t* regs) {
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switch(regs->eax) {
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case 1: {
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return sys_vga_text_write((char*)regs->ebx);
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}
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default:
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return -1;
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}
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}
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int32_t sys_vga_text_write(char* buf) {
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kprintf(buf);
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return 0;
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}
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