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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 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 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) */
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