/********************************************************/

/*  ntapi: Native API core library                      */

/*  Copyright (C) 2013--2016  Z. Gilboa                 */

/*  Released under GPLv2 and GPLv3; see COPYING.NTAPI.  */

/********************************************************/

#ifdef __DEBUG

#include <psxtypes/psxtypes.h>

#include <ntapi/nt_file.h>

#include <ntapi/ntapi.h>

#include "ntapi_impl.h"

char dbg_buf[0x1000];

ssize_t __cdecl __dbg_write(

	__in	void *		hfile,

	__in	const void *	buf,

	__in	size_t		bytes)

{

	nt_iosb		iosb;

	int32_t		status;

	status = __ntapi->zw_write_file(

		hfile,

		(void *)0,

		(nt_io_apc_routine *)0,

		(void *)0,

		&iosb,

		(void *)buf,

		(uint32_t)bytes,

		(nt_large_integer *)0,

		(uint32_t *)0);

	if (status == NT_STATUS_SUCCESS)

		return iosb.info;

	else

		return -1;

}

int32_t __cdecl __dbg_fn_call(

	__in	void *			hfile		__optional,

	__in	char *			fn_caller_name,

	__in	void *			fn_callee_addr,

	__in	uintptr_t		fn_ret,

	__in	ntapi_dbg_write*	pfn_dbg_write	__optional,

	__in	char *			source		__optional,

	__in	int			line		__optional)

{

	struct pe_ldr_tbl_entry *	image_meta;

	void *				image_base;

	char *				fn_name;

	size_t				bytes;

	char				dbg_buf[256];

	if (!pfn_dbg_write)

		pfn_dbg_write = __dbg_write;

	image_meta = pe_get_symbol_module_info(fn_callee_addr);

	fn_name    = (char *)0;

	if (image_meta)

		image_base = image_meta->dll_base;

	else

		image_base = (void *)0;

	if (image_base)

		fn_name = pe_get_symbol_name(

			image_base,

			fn_callee_addr);

	if (!fn_name)

		fn_name = pe_get_import_symbol_info(

			fn_callee_addr,

			(void **)0,

			(char **)0,

			&image_meta);

	if (source && fn_name)

		bytes = __ntapi->sprintf(

				dbg_buf,

				"%s: (%s:%d):\n"

				"--> %s returned 0x%08x\n\n",

				fn_caller_name, source, line, fn_name, fn_ret);

	else if (fn_name)

		bytes = __ntapi->sprintf(

				dbg_buf,

				"%s: %s returned 0x%08x\n\n",

				fn_caller_name, fn_name, fn_ret);

	else if (source)

		bytes = __ntapi->sprintf(

				dbg_buf,

				"%s: (%s:%d):\n"

				"--> calling 0x%08x returned 0x%08x\n\n",

				fn_caller_name, source, line, fn_callee_addr, fn_ret);

	else

		bytes = __ntapi->sprintf(

				dbg_buf,

				"%s: calling 0x%08x returned 0x%08x\n\n",

				fn_caller_name, fn_callee_addr, fn_ret);

	if (bytes) {

		bytes = __ntapi->strlen(dbg_buf);

		if (bytes == pfn_dbg_write(hfile,dbg_buf,bytes))

			return NT_STATUS_SUCCESS;

		else

			return NT_STATUS_UNSUCCESSFUL;

	} else

		return NT_STATUS_UNSUCCESSFUL;

}

int32_t __cdecl __dbg_msg(

	__in	void *			hfile		__optional,

	__in	char *			source		__optional,

	__in	int			line		__optional,

	__in	char *			fn_caller_name,

	__in	char *			fmt,

	__in	uintptr_t		arg1,

	__in	uintptr_t		arg2,

	__in	uintptr_t		arg3,

	__in	uintptr_t		arg4,

	__in	uintptr_t		arg5,

	__in	uintptr_t		arg6,

	__in	ntapi_dbg_write*	pfn_dbg_write	__optional)

{

	char *		buffer;

	size_t		bytes;

	if (!pfn_dbg_write)

		pfn_dbg_write = __dbg_write;

	bytes  = 0;

	buffer = dbg_buf;

	if (source)

		bytes = __ntapi->sprintf(

				buffer,

				"%s: (%s:%d):\n--> ",

				fn_caller_name,source,line);

	else if (fn_caller_name)

		bytes = __ntapi->sprintf(

				buffer,

				"%s: ",

				fn_caller_name);

	else

		dbg_buf[0] = '\0';

	if (bytes >= 0)

		buffer += __ntapi->strlen(dbg_buf);

	else

		return NT_STATUS_UNSUCCESSFUL;

	bytes = __ntapi->sprintf(buffer,fmt,arg1,arg2,arg3,arg4,arg5,arg6);

	if (bytes) {

		bytes = __ntapi->strlen(dbg_buf);

		if (bytes == pfn_dbg_write(hfile,dbg_buf,bytes))

			return NT_STATUS_SUCCESS;

		else

			return NT_STATUS_UNSUCCESSFUL;

	} else

		return NT_STATUS_UNSUCCESSFUL;

}

#endif