Espresso/include/ksymtab.h

#ifndef _KSYMTAB_H
#define _KSYMTAB_H

#include <types.h>

typedef struct kfunc {
 /*
  Bit 31 = 1 -> driver/module function, Bit 31 = 0 ->  kernel function
  Bits 30-20 -> module/driver ID (11 bits)
  Bits 19-0  -> function ID (20 bits)
 */
  uint32_t id;
  
  uint32_t addr; /* Pointer to function, 0x0 if nonexistent */
} kfunc_t;

uint64_t kfunc_call(kfunc_t* func, uint32_t a, uint32_t b, uint32_t c, uint32_t d);
uint64_t call_kfunc_by_id(uint32_t id, uint32_t a, uint32_t b, uint32_t c, uint32_t d);

uint32_t add_kfunc(void* addr, bool module, uint16_t module_id, uint32_t function_id);
kfunc_t make_kfunc(void* addr, bool module, uint16_t module_id, uint32_t function_id);

#endif