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/* asmmacro.h: Assembler macros. * * Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu) */ #ifndef _SPARC_ASMMACRO_H #define _SPARC_ASMMACRO_H #include <linux/config.h> #include <asm/btfixup.h> #include <asm/asi.h> #define GET_PROCESSOR4M_ID(reg) \ rd %tbr, %reg; \ srl %reg, 12, %reg; \ and %reg, 3, %reg; #define GET_PROCESSOR4D_ID(reg) \ lda [%g0] ASI_M_VIKING_TMP1, %reg; /* Blackbox */ #define GET_PROCESSOR_ID(reg) \ sethi %hi(___b_smp_processor_id), %reg; \ sethi %hi(boot_cpu_id), %reg; \ ldub [%reg + %lo(boot_cpu_id)], %reg; #define GET_PROCESSOR_MID(reg, tmp) \ rd %tbr, %reg; \ sethi %hi(C_LABEL(mid_xlate)), %tmp; \ srl %reg, 12, %reg; \ or %tmp, %lo(C_LABEL(mid_xlate)), %tmp; \ and %reg, 3, %reg; \ ldub [%tmp + %reg], %reg; #define GET_PROCESSOR_OFFSET(reg, tmp) \ GET_PROCESSOR_ID(reg) \ sethi %hi(C_LABEL(cpu_offset)), %tmp; \ sll %reg, 2, %reg; \ or %tmp, %lo(C_LABEL(cpu_offset)), %tmp; \ ld [%tmp + %reg], %reg; #define GET_PAGE_OFFSET(reg) \ sethi BTFIXUP_SETHI_INIT(page_offset,0xf0000000), %reg; /* All trap entry points _must_ begin with this macro or else you * lose. It makes sure the kernel has a proper window so that * c-code can be called. */ #define SAVE_ALL_HEAD \ sethi %hi(trap_setup), %l4; \ jmpl %l4 + %lo(trap_setup), %l6; #define SAVE_ALL \ SAVE_ALL_HEAD \ nop; /* All traps low-level code here must end with this macro. */ #define RESTORE_ALL b ret_trap_entry; clr %l6; /* sun4 probably wants half word accesses to ASI_SEGMAP, while sun4c+ likes byte accesses. These are to avoid ifdef mania. */ #ifdef CONFIG_SUN4 #define lduXa lduha #define stXa stha #else #define lduXa lduba #define stXa stba #endif #endif /* !(_SPARC_ASMMACRO_H) */ |