Subversion Repositories or1k

/* 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;

/* 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) */