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1da177e4 LT |
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) */ |