1#include <linux/kernel.h>
 2#include <linux/types.h>
 3#include <linux/mutex.h>
 4#include <linux/cpu.h>
 5
 6#include <linux/jump_label.h>
 7#include <linux/memory.h>
 8
 9#include <asm/cacheflush.h>
10
11#ifdef HAVE_JUMP_LABEL
12
13void arch_jump_label_transform(struct jump_entry *entry,
14			       enum jump_label_type type)
15{
16	u32 *insn = (u32 *) (unsigned long) entry->code;
17	u32 val;
 
18
19	if (type == JUMP_LABEL_JMP) {
20		s32 off = (s32)entry->target - (s32)entry->code;
21		bool use_v9_branch = false;
22
23		BUG_ON(off & 3);
24
25#ifdef CONFIG_SPARC64
26		if (off <= 0xfffff && off >= -0x100000)
27			use_v9_branch = true;
 
 
 
28#endif
29		if (use_v9_branch) {
30			/* WDISP19 - target is . + immed << 2 */
31			/* ba,pt %xcc, . + off */
32			val = 0x10680000 | (((u32) off >> 2) & 0x7ffff);
33		} else {
34			/* WDISP22 - target is . + immed << 2 */
35			BUG_ON(off > 0x7fffff);
36			BUG_ON(off < -0x800000);
37			/* ba . + off */
38			val = 0x10800000 | (((u32) off >> 2) & 0x3fffff);
39		}
40	} else {
41		val = 0x01000000;
42	}
43
44	get_online_cpus();
45	mutex_lock(&text_mutex);
46	*insn = val;
47	flushi(insn);
48	mutex_unlock(&text_mutex);
49	put_online_cpus();
 
 
 
 
 
 
 
 
50}
51
52#endif

 1#include <linux/kernel.h>
 2#include <linux/types.h>
 3#include <linux/mutex.h>
 4#include <linux/cpu.h>
 5
 6#include <linux/jump_label.h>
 7#include <linux/memory.h>
 8
 
 
 9#ifdef HAVE_JUMP_LABEL
10
11void arch_jump_label_transform(struct jump_entry *entry,
12			       enum jump_label_type type)
13{
 
14	u32 val;
15	u32 *insn = (u32 *) (unsigned long) entry->code;
16
17	if (type == JUMP_LABEL_ENABLE) {
18		s32 off = (s32)entry->target - (s32)entry->code;
 
 
 
19
20#ifdef CONFIG_SPARC64
21		/* ba,pt %xcc, . + (off << 2) */
22		val = 0x10680000 | ((u32) off >> 2);
23#else
24		/* ba . + (off << 2) */
25		val = 0x10800000 | ((u32) off >> 2);
26#endif
 
 
 
 
 
 
 
 
 
 
 
27	} else {
28		val = 0x01000000;
29	}
30
31	get_online_cpus();
32	mutex_lock(&text_mutex);
33	*insn = val;
34	flushi(insn);
35	mutex_unlock(&text_mutex);
36	put_online_cpus();
37}
38
39void arch_jump_label_text_poke_early(jump_label_t addr)
40{
41	u32 *insn_p = (u32 *) (unsigned long) addr;
42
43	*insn_p = 0x01000000;
44	flushi(insn_p);
45}
46
47#endif