mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-31 18:53:24 +00:00
46 lines
1.0 KiB
C
46 lines
1.0 KiB
C
/* asmmacro.h: Assembler macros.
|
|
*
|
|
* Copyright (C) 1996 David S. Miller (davem@caipfs.rutgers.edu)
|
|
*/
|
|
|
|
#ifndef _SPARC_ASMMACRO_H
|
|
#define _SPARC_ASMMACRO_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;
|
|
|
|
/* 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) */
|