ObjFW  Diff

/*
 * Copyright (c) 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017,
 *               2018, 2019, 2020
 *   Jonathan Schleifer <js@nil.im>
 * Copyright (c) 2008-2021 Jonathan Schleifer <js@nil.im>
 *
 * All rights reserved.
 *
 * This file is part of ObjFW. It may be distributed under the terms of the
 * Q Public License 1.0, which can be found in the file LICENSE.QPL included in
 * the packaging of this file.
 *

}

static uint64_t
readValue(uint8_t enc, const uint8_t **ptr)
{
	uint64_t value;

	if (enc == DW_EH_PE_aligned)
		OBJC_ERROR("DW_EH_PE_aligned is not implemented!");
	if (enc == DW_EH_PE_aligned) {
		const uintptr_t *aligned = (const uintptr_t *)
		    OF_ROUND_UP_POW2(sizeof(void *), (uintptr_t)*ptr);

		*ptr = (const uint8_t *)(aligned + 1);

		return *aligned;
	}

#define READ(type)					\
	{						\
		type tmp;				\
		memcpy(&tmp, *ptr, sizeof(type));	\
		value = tmp;				\
		*ptr += sizeForEncoding(enc);		\

	return value;
}

#ifndef HAVE_ARM_EHABI_EXCEPTIONS
static uint64_t
resolveValue(uint64_t value, uint8_t enc, const uint8_t *start, uint64_t base)
{
	if (value == 0)
		return 0;
	if (value == 0 || enc == DW_EH_PE_aligned)
		return value;

	value += ((enc & 0x70) == DW_EH_PE_pcrel ? (uintptr_t)start : base);

	if (enc & DW_EH_PE_indirect)
		value = *(uintptr_t *)(uintptr_t)value;

	return value;