BMOSP/kernel/log.c

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C
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/**
* log.c
* Функции отладки
*
* Функционал отладки
*
*/
#include <arch.h>
#include <fb.h>
#include <lock.h>
#include <log.h>
#include <mem.h>
#include <stdint.h>
#include <tool.h>
static char start_buffer[1024];
static char *log_buffer;
static uint64_t fb_pos_x = 4;
static uint64_t fb_pos_y = 0;
static uint64_t buf_pos = 0;
static uint64_t buf_max = 1024;
static lock_t log_lock = LOCK_INIT;
#define FONT_WIDTH 6 + 1
#define FONT_HEIGHT 8 + 1
void redraw_screen( );
// Получение кода символа в таблице
static inline uint32_t analyze(char glyth) {
return ((uint8_t)glyth - 32) * 8;
}
// Вывод символа по координатам
static void print_char(uint64_t x, uint64_t y, char glyth) {
uint32_t glyth_index = analyze(glyth);
for (uint64_t i = 0; i < FONT_6X8_SLIM_CHAR_HEIGHT; i++) {
fb_print_bits(x, y + i, font_6x8_slim[glyth_index + i]);
}
}
void log_dump_buffer( ) {
for (uint64_t i = 0; i < buf_pos; i++) { com_write_byte(log_buffer[i]); }
}
static void log_fb_putchar(char c) {
if (c == '\0' || fb_init_status < 1) { return; }
if (c == '\r') {
log_buffer[--buf_pos] = 0;
} else if (c == '\t') {
fb_pos_x += FONT_6X8_SLIM_CHAR_WIDTH * 4;
} else if (c == '\n') {
fb_pos_x = 4;
fb_pos_y += FONT_6X8_SLIM_CHAR_HEIGHT + 1;
} else {
if (fb_pos_x >= SCREEN_WIDTH) {
fb_pos_x = 4;
fb_pos_y += FONT_6X8_SLIM_CHAR_HEIGHT + 1;
}
if (fb_pos_y + FONT_6X8_SLIM_CHAR_HEIGHT >= SCREEN_HEIGHT) {
// Дошли до нижнего края экрана
while (log_buffer[0] != '\n') { tool_memmove(log_buffer, log_buffer + 1, --buf_pos); }
tool_memmove(log_buffer, log_buffer + 1, --buf_pos);
redraw_screen( );
return;
}
print_char(fb_pos_x, fb_pos_y, c);
fb_pos_x += FONT_6X8_SLIM_CHAR_WIDTH;
}
}
void redraw_screen( ) {
// Перерисовка экрана
hal_memset_32(SCREEN_BUFFER, DARK_GREEN, SCREEN_WIDTH * SCREEN_HEIGHT);
fb_pos_x = 4;
fb_pos_y = 0;
for (uint64_t i = 0; i < buf_pos; i++) { log_fb_putchar(log_buffer[i]); }
}
void log_putchar(char c) {
log_buffer[buf_pos] = c;
com_write_byte(c);
if (buf_pos + 1 == buf_max) {
// Смещение буфера на 1 символ влево
for (uint64_t i = 0; i < buf_max - 1; i++) { log_buffer[i] = log_buffer[i + 1]; }
if (fb_init_status < 1) { return; }
redraw_screen( );
} else {
buf_pos++;
if (fb_init_status < 1) { return; }
log_fb_putchar(c);
}
}
// Вывод текстового сообщения
void log_printf(char *str, ...) {
LOCK(log_lock);
va_list args;
va_start(args, str);
tool_format(&log_putchar, str, args);
lock_release(log_lock);
va_end(args);
}
void log_init_mem( ) {
LOCK(log_lock);
log_buffer = mem_alloc(((SCREEN_WIDTH - 4) / FONT_WIDTH) * (SCREEN_HEIGHT / FONT_HEIGHT));
tool_memcpy(log_buffer, start_buffer, buf_max);
buf_max = ((SCREEN_WIDTH - 4) / FONT_WIDTH) * (SCREEN_HEIGHT / FONT_HEIGHT);
LOG("Размер буффера: %u символов\n", buf_max);
LOG("%ux%u %u\n", width, height, bpp);
redraw_screen( );
lock_release(log_lock);
}
void log_init( ) {
log_buffer = (char *)&start_buffer;
}