1/*
 2 * Copyright 2015 Tilera Corporation. All Rights Reserved.
 3 *
 4 *   This program is free software; you can redistribute it and/or
 5 *   modify it under the terms of the GNU General Public License
 6 *   as published by the Free Software Foundation, version 2.
 7 *
 8 *   This program is distributed in the hope that it will be useful, but
 9 *   WITHOUT ANY WARRANTY; without even the implied warranty of
10 *   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
11 *   NON INFRINGEMENT.  See the GNU General Public License for
12 *   more details.
13 */
14
15#ifndef _ASM_TILE_JUMP_LABEL_H
16#define _ASM_TILE_JUMP_LABEL_H
17
18#include <arch/opcode.h>
19
20#define JUMP_LABEL_NOP_SIZE	TILE_BUNDLE_SIZE_IN_BYTES
21
22static __always_inline bool arch_static_branch(struct static_key *key,
23					       bool branch)
24{
25	asm_volatile_goto("1:\n\t"
26		"nop" "\n\t"
27		".pushsection __jump_table,  \"aw\"\n\t"
28		".quad 1b, %l[l_yes], %0 + %1 \n\t"
29		".popsection\n\t"
30		: :  "i" (key), "i" (branch) : : l_yes);
31	return false;
32l_yes:
33	return true;
34}
35
36static __always_inline bool arch_static_branch_jump(struct static_key *key,
37						    bool branch)
38{
39	asm_volatile_goto("1:\n\t"
40		"j %l[l_yes]" "\n\t"
41		".pushsection __jump_table,  \"aw\"\n\t"
42		".quad 1b, %l[l_yes], %0 + %1 \n\t"
43		".popsection\n\t"
44		: :  "i" (key), "i" (branch) : : l_yes);
45	return false;
46l_yes:
47	return true;
48}
49
50typedef u64 jump_label_t;
51
52struct jump_entry {
53	jump_label_t code;
54	jump_label_t target;
55	jump_label_t key;
56};
57
58#endif /* _ASM_TILE_JUMP_LABEL_H */