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#ifndef MELVIX_SYSTEM_H
#define MELVIX_SYSTEM_H
#include <multiboot.h>
#include <stddef.h>
#include <stdint.h>
// Passed by low level things
u32 multiboot_address;
extern u32 text_start;
extern u32 data_start;
extern u32 bss_start;
extern u32 kernel_end;
/**
* The ASM registers as packed structure
*/
typedef struct __attribute__((packed)) {
u16 di, si, bp, sp, bx, dx, cx, ax;
u16 gs, fs, es, ds, eflags;
} regs16_t;
/**
* Execute BIOS interrupts by switching to real mode
* @param intnum The interrupt number (e.g. 0x10)
* @param regs The ASM registers
*/
extern void int32(u8 intnum, regs16_t *regs);
// Filename macro
#define __FILENAME__ \
(__builtin_strrchr(__FILE__, '/') ? __builtin_strrchr(__FILE__, '/') + 1 : __FILE__)
/**
* Display a general log message
* @param fmt The message
*/
void _debug(const char *f, const char *fmt, ...);
#define debug(fmt, ...) _debug(__func__, fmt, ##__VA_ARGS__)
/**
* Display an information message
* @param fmt The information
*/
void _info(const char *f, const char *fmt, ...);
#define info(fmt, ...) _info(__func__, fmt, ##__VA_ARGS__)
/**
* Display a warning message
* @param fmt The warning cause/reason
*/
void _warn(const char *f, const char *fmt, ...);
#define warn(fmt, ...) _warn(__func__, fmt, ##__VA_ARGS__)
/**
* Log into serial console
* @param fmt The log message
*/
void _log(const char *f, const char *fmt, ...);
#define log(fmt, ...) _log(__func__, fmt, ##__VA_ARGS__)
/**
* Halt the entire system and display a message
* @param msg The error cause/reason
*/
void _panic(const char *f, const char *msg);
#define panic(msg) _panic(__func__, msg)
/**
* Assert that a value is non-zero, else panic
* @param x The value
*/
void _assert(const char *file, int line, const char *func, const char *exp);
#define assert(exp) (exp) ? 0 : _assert(__FILENAME__, __LINE__, __func__, #exp)
/**
* Creates an infinite halt loop
*/
void halt_loop();
/**
* Executes int32 with paging disable/enable
* @param code The interrupt code
* @param regs The registers
*/
void v86(u8 code, regs16_t *regs);
// Colors
#define RED "\x1B[31m"
#define GRN "\x1B[32m"
#define YEL "\x1B[33m"
#define BLU "\x1B[34m"
#define MAG "\x1B[35m"
#define CYN "\x1B[36m"
#define WHT "\x1B[37m"
#define RES "\x1B[0m"
#endif
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