// Copyright (c) Microsoft Corporation.  All rights reserved.
// Copyright (c) Lysann Tranvouez.  All rights reserved.

#pragma once
#ifndef MACH_DETOURS_H
#define MACH_DETOURS_H

#ifdef __cplusplus
extern "C" {
#endif

#include <mach/error.h>
#include <mach/mach_types.h>

typedef void* detour_func_t;

#define	detour_err_in_progress	(err_local | 1)
#define	detour_err_wrong_thread	(err_local | 2)
#define	detour_err_too_small	(err_local | 3)
#define	detour_err_too_large	(err_local | 4)

mach_error_t detour_transaction_begin();
mach_error_t detour_transaction_abort();
mach_error_t detour_transaction_commit();
mach_error_t detour_transaction_commit_ex(detour_func_t** out_failed_target);

mach_error_t detour_manage_thread(thread_t thread);

mach_error_t detour_attach(detour_func_t* inout_pointer, detour_func_t detour);
mach_error_t detour_attach_ex(detour_func_t* inout_pointer, detour_func_t detour, detour_func_t* out_real_trampoline, detour_func_t* out_real_target, detour_func_t* out_real_detour);
mach_error_t detour_detach(detour_func_t* inout_pointer, detour_func_t detour);

bool detour_set_ignore_too_small(bool value);
bool detour_set_retain_regions(bool value);
void* detour_set_system_region_lower_bound(void* value);
void* detour_set_system_region_upper_bound(void* value);

#ifdef __cplusplus
}
#endif

#endif // MACH_DETOURS_H