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https://github.com/Tom-on64/kern.git
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Tom-on
ff07696dc6
- Made stdio.h work - Moved printFiletable back into kernel.c - TODO: Add stdio.h to all files that should use it (probably next commmit) - Added some more global addresses. There's a memory layout, but i'm not using it - Got cursor to be drawn - Calc program now gets user input
50 lines
951 B
C
50 lines
951 B
C
#ifndef STDIO_H
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#define STDIO_H
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#include <syscall.h>
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#include <string.h>
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// TODO: Make a proper file descriptor table
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#define STDOUT 1
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void print(const char* s) {
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write(STDOUT, s, strlen(s));
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}
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void putc(char c) {
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static char _c; // We need to pass in a static address. Idk why
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_c = c;
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write(STDOUT, &_c, 1);
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}
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char getc() {
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char* character = (char*)0x3000;
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*character = '\0';
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while (*character == '\0') { __asm__ volatile ("hlt"); }
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return *character;
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}
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// Reads until a newline
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// TODO: Use Read() Syscall
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void read(char* buffer) {
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char c;
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uint8_t len = 0;
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while ((c = getc()) != '\n') {
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if (c == '\b') {
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if (len < 1) continue; // Can we backspace?
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len--;
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putc(c);
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} else {
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buffer[len++] = c;
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putc(c);
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}
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}
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buffer[len++] = c; // Add newline
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putc(c);
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buffer[len] = '\0'; // Null terminate
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}
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#endif
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