#ifndef MEMORY_H_
#define MEMORY_H_

#include "array/array.h"
#include "types.h"

#include <assert.h>

typedef enum {
  HI_MEMORY_READ = 1 << 0,
  HI_MEMORY_WRITE = 1 << 1,
  HI_MEMORY_EXECUTE = 1 << 2,
  HI_MEMORY_SHARED = 1 << 3,
  HI_MEMORY_PRIVATE = 1 << 4
} MemoryPermissions;

typedef struct {
  uptr region_start;
  uptr region_end;
} MemoryRegionSpan;

typedef struct {
  uptr region_start;
  uptr region_end;
  ptrdiff offset;
  u64 inode;
  const char *pathname;
  u32 permission; // enum MemoryPermissions
} MemoryRegion;

sc_array_def(MemoryRegion, memreg);

/* A pointer that can be used to place the memory regions into. Clears regions
 * before use, but uses the same buffer. */
HiloadResult read_memory_maps_self(struct sc_array_memreg *regions);

/* Return index the pointer is found in */
HiloadResult memory_find_pointer(uptr ptr,
                                 struct sc_array_memreg *const regions,
                                 size_t *index);

MemoryRegionSpan memory_get_module_span(const struct sc_array_memreg *const regions,
                                        const char module_name[static 1]);

#endif // MEMORY_H_