projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 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 | ||
| 1da177e4 LT |
9 | #include <asm/btfixup.h> |
| 10 | #include <asm/asi.h> | |
| 11 | ||
| 12 | #define GET_PROCESSOR4M_ID(reg) \ | |
| 13 | rd %tbr, %reg; \ | |
| 14 | srl %reg, 12, %reg; \ | |
| 15 | and %reg, 3, %reg; | |
| 16 | ||
| 17 | #define GET_PROCESSOR4D_ID(reg) \ | |
| 18 | lda [%g0] ASI_M_VIKING_TMP1, %reg; | |
| 19 | ||
| 20 | /* All trap entry points _must_ begin with this macro or else you | |
| 21 | * lose. It makes sure the kernel has a proper window so that | |
| 22 | * c-code can be called. | |
| 23 | */ | |
| 24 | #define SAVE_ALL_HEAD \ | |
| 25 | sethi %hi(trap_setup), %l4; \ | |
| 26 | jmpl %l4 + %lo(trap_setup), %l6; | |
| 27 | #define SAVE_ALL \ | |
| 28 | SAVE_ALL_HEAD \ | |
| 29 | nop; | |
| 30 | ||
| 31 | /* All traps low-level code here must end with this macro. */ | |
| 32 | #define RESTORE_ALL b ret_trap_entry; clr %l6; | |
| 33 | ||
| 34 | /* sun4 probably wants half word accesses to ASI_SEGMAP, while sun4c+ | |
| 35 | likes byte accesses. These are to avoid ifdef mania. */ | |
| 36 | ||
| 37 | #ifdef CONFIG_SUN4 | |
| 38 | #define lduXa lduha | |
| 39 | #define stXa stha | |
| 40 | #else | |
| 41 | #define lduXa lduba | |
| 42 | #define stXa stba | |
| 43 | #endif | |
| 44 | ||
| 45 | #endif /* !(_SPARC_ASMMACRO_H) */ |