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1/* asmmacro.h: Assembler macros.
2 *
3 * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
4 */
5
6#ifndef _SPARC_ASMMACRO_H
7#define _SPARC_ASMMACRO_H
8
9#include <linux/config.h>
10#include <asm/btfixup.h>
11#include <asm/asi.h>
12
13#define GET_PROCESSOR4M_ID(reg) \
14 rd %tbr, %reg; \
15 srl %reg, 12, %reg; \
16 and %reg, 3, %reg;
17
18#define GET_PROCESSOR4D_ID(reg) \
19 lda [%g0] ASI_M_VIKING_TMP1, %reg;
20
21/* All trap entry points _must_ begin with this macro or else you
22 * lose. It makes sure the kernel has a proper window so that
23 * c-code can be called.
24 */
25#define SAVE_ALL_HEAD \
26 sethi %hi(trap_setup), %l4; \
27 jmpl %l4 + %lo(trap_setup), %l6;
28#define SAVE_ALL \
29 SAVE_ALL_HEAD \
30 nop;
31
32/* All traps low-level code here must end with this macro. */
33#define RESTORE_ALL b ret_trap_entry; clr %l6;
34
35/* sun4 probably wants half word accesses to ASI_SEGMAP, while sun4c+
36 likes byte accesses. These are to avoid ifdef mania. */
37
38#ifdef CONFIG_SUN4
39#define lduXa lduha
40#define stXa stha
41#else
42#define lduXa lduba
43#define stXa stba
44#endif
45
46#endif /* !(_SPARC_ASMMACRO_H) */