332 lines
10 KiB
C
332 lines
10 KiB
C
#ifndef __SYSTEM_H
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#define __SYSTEM_H
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#define _KERNEL_
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#include <types.h>
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#include <fs.h>
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/* Binary Literals */
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#define b(x) ((uint8_t)b_(0 ## x ## uL))
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#define b_(x) ((x & 1) | (x >> 2 & 2) | (x >> 4 & 4) | (x >> 6 & 8) | (x >> 8 & 16) | (x >> 10 & 32) | (x >> 12 & 64) | (x >> 14 & 128))
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/* Unimportant Kernel Strings */
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#define KERNEL_UNAME "ToAruOS"
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#define KERNEL_VERSION_STRING "0.0.1"
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#define asm __asm__
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#define volatile __volatile__
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#define IRQ_OFF asm volatile ("cli")
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#define IRQ_ON asm volatile ("sti")
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#define PAUSE asm volatile ("hlt")
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#define STOP while (1) { PAUSE; }
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extern void *sbrk(uintptr_t increment);
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extern void tss_flush();
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/* Kernel Main */
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extern int max(int,int);
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extern int abs(int);
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extern void swap(int *, int *);
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extern void *memcpy(void *restrict dest, const void *restrict src, size_t count);
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extern void *memmove(void *restrict dest, const void *restrict src, size_t count);
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extern void *memset(void *dest, int val, size_t count);
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extern unsigned short *memsetw(unsigned short *dest, unsigned short val, int count);
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extern uint32_t strlen(const char *str);
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extern int atoi(const char *str);
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extern unsigned char inportb(unsigned short _port);
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extern void outportb(unsigned short _port, unsigned char _data);
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extern unsigned short inports(unsigned short _port);
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extern void outports(unsigned short _port, unsigned short _data);
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extern unsigned int inportl(unsigned short _port);
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extern void outportl(unsigned short _port, unsigned int _data);
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extern int strcmp(const char *a, const char *b);
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extern char * strtok_r(char * str, const char * delim, char ** saveptr);
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extern size_t lfind(const char * str, const char accept);
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extern size_t rfind(const char * str, const char accept);
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extern size_t strspn(const char * str, const char * accept);
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extern char * strpbrk(const char * str, const char * accept);
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extern uint32_t krand();
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extern char * strstr(const char * haystack, const char * needle);
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extern uint8_t startswith(const char * str, const char * accept);
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/* VGA driver */
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extern void cls();
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extern void puts(char *str);
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extern void settextcolor(unsigned char forecolor, unsigned char backcolor);
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extern void resettextcolor();
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extern void brighttextcolor();
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extern void init_video();
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extern void placech(unsigned char c, int x, int y, int attr);
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extern void writechf(unsigned char c);
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extern void writech(unsigned char c);
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extern void place_csr(uint32_t x, uint32_t y);
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extern void store_csr();
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extern void restore_csr();
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extern void set_serial(int);
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extern void set_csr(int);
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/* GDT */
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extern void gdt_install();
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extern void gdt_set_gate(int num, unsigned long base, unsigned long limit, unsigned char access,
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unsigned char gran);
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extern void set_kernel_stack(uintptr_t stack);
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/* IDT */
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extern void idt_install();
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extern void idt_set_gate(unsigned char num, unsigned long base, unsigned short sel,
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unsigned char flags);
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/* Registers */
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struct regs {
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unsigned int gs, fs, es, ds;
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unsigned int edi, esi, ebp, esp, ebx, edx, ecx, eax;
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unsigned int int_no, err_code;
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unsigned int eip, cs, eflags, useresp, ss;
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};
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typedef void (*irq_handler_t) (struct regs *);
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/* Panic */
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#define HALT_AND_CATCH_FIRE(mesg, regs) halt_and_catch_fire(mesg, __FILE__, __LINE__, regs)
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#define ASSERT(statement) ((statement) ? (void)0 : assert_failed(__FILE__, __LINE__, #statement))
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#define assert(statement) ((statement) ? (void)0 : assert_failed(__FILE__, __LINE__, #statement))
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void halt_and_catch_fire(char *error_message, const char *file, int line, struct regs * regs);
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void assert_failed(const char *file, uint32_t line, const char *desc);
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/* ISRS */
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extern void isrs_install();
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extern void isrs_install_handler(int isrs, irq_handler_t);
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extern void isrs_uninstall_handler(int isrs);
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/* Interrupt Handlers */
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extern void irq_install();
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extern void irq_install_handler(int irq, irq_handler_t);
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extern void irq_uninstall_handler(int irq);
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extern void irq_gates();
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/* Timer */
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extern void timer_install();
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extern long timer_ticks;
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extern void timer_wait(int ticks);
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/* Keyboard */
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typedef void (*keyboard_buffer_t)(char ch);
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keyboard_buffer_t keyboard_buffer_handler;
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keyboard_buffer_t keyboard_direct_handler;
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extern void keyboard_install();
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extern void keyboard_wait();
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extern void putch(unsigned char c);
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extern void set_kbd(int,int,int);
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/* Mouse */
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extern void mouse_install();
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/* kprintf */
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extern void kprintf(const char *fmt, ...);
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extern int sprintf(char *buf, const char *fmt, ...);
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extern int kgets(char *buf, int size);
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typedef void (*kgets_redraw_t)();
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extern kgets_redraw_t kgets_redraw_func;
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typedef void (*kgets_tab_complete_t)(char *);
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extern kgets_tab_complete_t kgets_tab_complete_func;
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extern void kgets_redraw_buffer();
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typedef void (*kgets_special_t)(char *);
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extern kgets_special_t kgets_key_down;
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extern kgets_special_t kgets_key_up;
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extern kgets_special_t kgets_key_left;
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extern kgets_special_t kgets_key_right;
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/* Memory Management */
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extern uintptr_t placement_pointer;
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extern void kmalloc_startat(uintptr_t address);
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extern uintptr_t kmalloc_real(size_t size, int align, uintptr_t * phys);
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extern uintptr_t kmalloc(size_t size);
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extern uintptr_t kvmalloc(size_t size);
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extern uintptr_t kmalloc_p(size_t size, uintptr_t * phys);
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extern uintptr_t kvmalloc_p(size_t size, uintptr_t * phys);
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typedef struct page {
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uint32_t present:1;
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uint32_t rw:1;
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uint32_t user:1;
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uint32_t accessed:1;
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uint32_t dirty:1;
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uint32_t unused:7;
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uint32_t frame:20;
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} page_t;
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typedef struct page_table {
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page_t pages[1024];
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} page_table_t;
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typedef struct page_directory {
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page_table_t *tables[1024]; /* 1024 pointers to page tables... */
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uintptr_t physical_tables[1024]; /* Physical addresses of the tables */
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uintptr_t physical_address; /* The physical address of physical_tables */
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} page_directory_t;
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page_directory_t *kernel_directory;
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page_directory_t *current_directory;
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extern void paging_install(uint32_t memsize);
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extern void switch_page_directory(page_directory_t * new);
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extern page_t *get_page(uintptr_t address, int make, page_directory_t * dir);
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extern void page_fault(struct regs *r);
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extern void dma_frame(page_t * page, int, int, uintptr_t);
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extern void debug_print_directory();
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void heap_install();
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void alloc_frame(page_t *page, int is_kernel, int is_writeable);
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void free_frame(page_t *page);
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/* klmalloc */
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void * __attribute__ ((malloc)) malloc(size_t size);
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void * __attribute__ ((malloc)) realloc(void *ptr, size_t size);
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void * __attribute__ ((malloc)) calloc(size_t nmemb, size_t size);
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void * __attribute__ ((malloc)) valloc(size_t size);
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void free(void *ptr);
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/* shell */
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extern void start_shell();
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/* Serial */
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extern void serial_install();
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extern char serial_recv();
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extern void serial_send(char out);
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extern void serial_string(char * out);
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/* Tasks */
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extern uintptr_t read_eip();
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extern void copy_page_physical(uint32_t, uint32_t);
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extern page_directory_t * clone_directory(page_directory_t * src);
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extern page_table_t * clone_table(page_table_t * src, uintptr_t * physAddr);
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extern void move_stack(void *new_stack_start, size_t size);
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extern void kexit(int retval);
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extern void task_exit(int retval);
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extern uint32_t next_pid;
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typedef struct tss_entry {
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uint32_t prev_tss;
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uint32_t esp0;
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uint32_t ss0;
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uint32_t esp1;
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uint32_t ss1;
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uint32_t esp2;
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uint32_t ss2;
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uint32_t cr3;
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uint32_t eip;
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uint32_t eflags;
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uint32_t eax;
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uint32_t ecx;
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uint32_t edx;
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uint32_t ebx;
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uint32_t esp;
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uint32_t ebp;
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uint32_t esi;
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uint32_t edi;
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uint32_t es;
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uint32_t cs;
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uint32_t ss;
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uint32_t ds;
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uint32_t fs;
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uint32_t gs;
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uint32_t ldt;
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uint16_t trap;
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uint16_t iomap_base;
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} __attribute__ ((packed)) tss_entry_t;
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extern void tasking_install();
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extern void switch_task();
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extern void switch_next();
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extern uint32_t fork();
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extern uint32_t getpid();
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extern void enter_user_jmp(uintptr_t location, int argc, char ** argv, uintptr_t stack);
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uintptr_t initial_esp;
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/* Kernel Argument Parser */
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extern void parse_args(char * argv);
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/* CMOS */
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extern void get_time(uint16_t * hours, uint16_t * minutes, uint16_t * seconds);
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extern void get_date(uint16_t * month, uint16_t * day);
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struct timeval {
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uint32_t tv_sec;
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uint32_t tv_usec;
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};
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extern int gettimeofday(struct timeval * t, void * z);
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extern uint32_t now();
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/* CPU Detect by Brynet */
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extern int detect_cpu();
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/* Video Drivers */
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/* BOCHS / QEMU VBE Driver */
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extern void graphics_install_bochs();
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extern void bochs_set_csr(int x, int y);
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extern int bochs_get_csr_x();
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extern int bochs_get_csr_y();
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extern void bochs_set_csr_on(uint8_t);
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extern void bochs_set_bank(uint16_t bank);
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extern void bochs_set_coord(uint16_t x, uint16_t y, uint32_t color);
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extern void bochs_fill_rect(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint32_t color);
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extern void bochs_draw_logo(char *);
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extern void bochs_scroll();
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extern void bochs_write_char(uint8_t val, uint16_t x, uint16_t y, uint32_t fg, uint32_t bg);
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extern uint16_t bochs_resolution_x;
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extern uint16_t bochs_resolution_y;
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extern uint16_t bochs_resolution_b;
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extern uint32_t bochs_colors[];
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extern void bochs_set_y_offset(uint16_t y);
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extern uint16_t bochs_current_scroll();
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/* Terminal functions */
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extern void bochs_term_clear();
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extern void bochs_write(char c);
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extern void bochs_reset_colors();
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extern void bochs_set_colors(uint8_t, uint8_t);
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extern void bochs_draw_line(uint16_t,uint16_t,uint16_t,uint16_t,uint32_t);
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extern int bochs_get_width();
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extern int bochs_get_height();
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extern void bochs_set_cell(int x, int y, char c);
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extern uintptr_t bochs_get_address();
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extern void bochs_redraw_cell(int x, int y);
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extern void bochs_install_wallpaper();
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extern void bochs_screenshot();
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extern void bochs_redraw_cursor();
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/* ANSI Terminal Escape Processor */
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void ansi_put(char c);
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void ansi_print(char * c);
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void ansi_init();
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int ansi_ready;
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extern uint8_t number_font[][12];
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/* Floating Point Unit */
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void set_fpu_cw(const uint16_t);
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void enable_fpu();
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/* ELF */
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int exec( char *, int, char **);
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int system( char *, int, char **);
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/* Sytem Calls */
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void syscalls_install();
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/* PCI */
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uint16_t pci_read_word(uint32_t bus, uint32_t slot, uint32_t func, uint16_t offset);
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void pci_write_word(uint32_t bus, uint32_t slot, uint32_t func, uint16_t offset, uint32_t data);
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/* IDE / PATA */
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void ide_read_sector(uint16_t bus, uint8_t slave, uint32_t lba, uint8_t * buf);
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void ide_write_sector(uint16_t bus, uint8_t slave, uint32_t lba, uint8_t * buf);
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#endif
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