include/asm-sparc/asmmacro.h

   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
   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) */