toaruos/kernel/include/system.h

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#ifndef __SYSTEM_H
#define __SYSTEM_H
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#define _KERNEL_
#include <types.h>
/* Binary Literals */
#define b(x) ((uint8_t)b_(0 ## x ## uL))
#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 */
#define KERNEL_UNAME "ToAruOS"
#define KERNEL_VERSION_STRING "0.0.1"
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extern void *sbrk(uintptr_t increment);
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extern void tss_flush();
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/* Kernel Main */
extern int max(int,int);
extern int abs(int);
extern void swap(int *, int *);
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extern void *memcpy(void *restrict dest, const void *restrict src, size_t count);
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);
extern int 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);
extern void outportb(unsigned short _port, unsigned char _data);
extern unsigned short inports(unsigned short _port);
extern void outports(unsigned short _port, unsigned short _data);
extern unsigned int inportl(unsigned short _port);
extern void outportl(unsigned short _port, unsigned int _data);
extern int strcmp(const char *a, const char *b);
extern char * strtok_r(char * str, const char * delim, char ** saveptr);
extern size_t lfind(const char * str, const char accept);
extern size_t strspn(const char * str, const char * accept);
extern char * strpbrk(const char * str, const char * accept);
extern uint32_t krand();
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/* VGA driver */
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);
extern void resettextcolor();
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extern void brighttextcolor();
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extern void init_video();
extern void placech(unsigned char c, int x, int y, int attr);
extern void writechf(unsigned char c);
extern void writech(unsigned char c);
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extern void place_csr(uint32_t x, uint32_t y);
extern void store_csr();
extern void restore_csr();
extern void set_serial(int);
extern void set_csr(int);
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/* GDT */
extern void gdt_install();
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extern void gdt_set_gate(int num, unsigned long base, unsigned long limit, unsigned char access,
unsigned char gran);
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extern void set_kernel_stack(uintptr_t stack);
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/* IDT */
extern void idt_install();
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extern void idt_set_gate(unsigned char num, unsigned long base, unsigned short sel,
unsigned char flags);
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/* Registers */
struct regs {
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unsigned int gs, fs, es, ds;
unsigned int edi, esi, ebp, esp, ebx, edx, ecx, eax;
unsigned int int_no, err_code;
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 */
#define HALT_AND_CATCH_FIRE(mesg, regs) halt_and_catch_fire(mesg, __FILE__, __LINE__, regs)
#define ASSERT(statement) ((statement) ? (void)0 : assert_failed(__FILE__, __LINE__, #statement))
#define assert(statement) ((statement) ? (void)0 : assert_failed(__FILE__, __LINE__, #statement))
void halt_and_catch_fire(char *error_message, const char *file, int line, struct regs * regs);
void assert_failed(const char *file, uint32_t line, const char *desc);
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/* ISRS */
extern void isrs_install();
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extern void isrs_install_handler(int isrs, irq_handler_t);
extern void isrs_uninstall_handler(int isrs);
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/* Interrupt Handlers */
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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/* Timer */
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 */
typedef void (*keyboard_buffer_t)(char ch);
keyboard_buffer_t keyboard_buffer_handler;
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extern void keyboard_install();
extern void keyboard_wait();
extern void putch(unsigned char c);
extern void set_kbd(int,int,int);
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/* kprintf */
extern void kprintf(const char *fmt, ...);
extern int kgets(char *buf, int size);
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/* Memory Management */
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);
extern uintptr_t kmalloc(size_t size);
extern uintptr_t kvmalloc(size_t size);
extern uintptr_t kmalloc_p(size_t size, uintptr_t * phys);
extern uintptr_t kvmalloc_p(size_t size, uintptr_t * phys);
typedef struct page {
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uint32_t present:1;
uint32_t rw:1;
uint32_t user:1;
uint32_t accessed:1;
uint32_t dirty:1;
uint32_t unused:7;
uint32_t frame:20;
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} page_t;
typedef struct page_table {
page_t pages[1024];
} page_table_t;
typedef struct page_directory {
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page_table_t *tables[1024]; /* 1024 pointers to page tables... */
uintptr_t physical_tables[1024]; /* Physical addresses of the tables */
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;
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);
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);
extern void dma_frame(page_t * page, int, int, uintptr_t);
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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);
/* klmalloc */
void * __attribute__ ((malloc)) malloc(size_t size);
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void * __attribute__ ((malloc)) realloc(void *ptr, size_t size);
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 */
extern void start_shell();
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/* Serial */
extern void serial_install();
extern char serial_recv();
extern void serial_send(char out);
extern void serial_string(char * out);
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/* Tasks */
typedef struct task {
uint32_t id;
uintptr_t esp;
uintptr_t ebp;
uintptr_t eip;
page_directory_t * page_directory;
struct task *next;
uintptr_t stack;
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uintptr_t user_stack;
int retval;
uint8_t finished;
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uint32_t image_size;
uintptr_t entry;
} task_t;
extern __volatile__ task_t * current_task;
extern __volatile__ task_t * ready_queue;
extern uintptr_t read_eip();
extern void copy_page_physical(uint32_t, uint32_t);
extern page_directory_t * clone_directory(page_directory_t * src);
extern page_table_t * clone_table(page_table_t * src, uintptr_t * physAddr);
extern void move_stack(void *new_stack_start, size_t size);
extern task_t * gettask(uint32_t pid);
extern void kexit(int retval);
extern void task_exit(int retval);
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extern uint32_t next_pid;
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typedef struct tss_entry {
uint32_t prev_tss;
uint32_t esp0;
uint32_t ss0;
uint32_t esp1;
uint32_t ss1;
uint32_t esp2;
uint32_t ss2;
uint32_t cr3;
uint32_t eip;
uint32_t eflags;
uint32_t eax;
uint32_t ecx;
uint32_t edx;
uint32_t ebx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t es;
uint32_t cs;
uint32_t ss;
uint32_t ds;
uint32_t fs;
uint32_t gs;
uint32_t ldt;
uint16_t trap;
uint16_t iomap_base;
} __attribute__ ((packed)) tss_entry_t;
extern void tasking_install();
extern void switch_task();
extern uint32_t fork();
extern uint32_t getpid();
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extern void enter_user_mode();
extern void enter_user_jmp(uintptr_t location, int argc, char ** argv);
uintptr_t initial_esp;
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/* Kernel Argument Parser */
extern void parse_args(char * argv);
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/* CMOS */
extern void get_time(uint16_t * hours, uint16_t * minutes, uint16_t * seconds);
extern void get_date(uint16_t * month, uint16_t * day);
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/* CPU Detect by Brynet */
extern int detect_cpu();
/* Video Drivers */
/* BOCHS / QEMU VBE Driver */
extern void graphics_install_bochs();
extern void bochs_set_bank(uint16_t bank);
extern void bochs_set_coord(uint16_t x, uint16_t y, uint32_t color);
extern void bochs_fill_rect(uint16_t x, uint16_t y, uint16_t w, uint16_t h, uint32_t color);
extern void bochs_draw_logo(char *);
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);
extern uint16_t bochs_resolution_x;
extern uint16_t bochs_resolution_y;
extern uint16_t bochs_resolution_b;
extern uint32_t bochs_colors[];
extern void bochs_set_y_offset(uint16_t y);
extern uint16_t bochs_current_scroll();
/* Terminal functions */
extern void bochs_term_clear();
extern void bochs_write(char c);
extern void bochs_reset_colors();
extern void bochs_set_colors(uint8_t, uint8_t);
extern void bochs_draw_line(uint16_t,uint16_t,uint16_t,uint16_t,uint32_t);
/* ANSI Terminal Escape Processor */
void ansi_put(char c);
void ansi_print(char * c);
void ansi_init();
int ansi_ready;
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extern uint8_t number_font[][12];
/* Floating Point Unit */
void set_fpu_cw(const uint16_t);
void enable_fpu();
/* ELF */
int exec( char *, int, char **);
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int system( char *, int, char **);
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/* Sytem Calls */
void syscalls_install();
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#endif