/*
* Copyright (c) 2021 Apple Inc. All rights reserved.
*
* @APPLE_OSREFERENCE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. The rights granted to you under the License
* may not be used to create, or enable the creation or redistribution of,
* unlawful or unlicensed copies of an Apple operating system, or to
* circumvent, violate, or enable the circumvention or violation of, any
* terms of an Apple operating system software license agreement.
*
* Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
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* @APPLE_OSREFERENCE_LICENSE_HEADER_END@
*/
#ifndef _MACHINE_STATIC_IF_H
#error "do not include this file directly, use <machine/static_if.h>"
#else
#define STATIC_IF_RELATIVE 1
#define STATIC_IF_INSN_SIZE 4
typedef int static_if_offset_t;
struct static_if_entry {
static_if_offset_t sie_base;
static_if_offset_t sie_target;
unsigned long sie_link;
};
/* generates a struct static_if_entry */
#define STATIC_IF_ENTRY(n) \
".pushsection " STATIC_IF_SEGSECT ",regular,live_support" "\n\t" \
".align 3" "\n\t" \
".long 1b - ." "\n\t" \
".long %l1 - 1b" "\n\t" \
".quad _" #n "_jump_key + %c0" "\n\t" \
".popsection"
#define STATIC_IF_NOP(n, label) \
asm goto("1: nop" "\n\t" \
STATIC_IF_ENTRY(n) : : "i"(0) : : label)
#define STATIC_IF_BRANCH(n, label) \
asm goto("1: b %l1" "\n\t" \
STATIC_IF_ENTRY(n) : : "i"(1) : : label)
#endif /* _MACHINE_STATIC_IF_H */