include/asm-x86/linkage.h

   1 #ifndef __ASM_LINKAGE_H
   2 #define __ASM_LINKAGE_H
   3
   4 #ifdef CONFIG_X86_64
   5 #define __ALIGN .p2align 4,,15
   6 #define __ALIGN_STR ".p2align 4,,15"
   7 #endif
   8
   9 #ifdef CONFIG_X86_32
  10 #define asmlinkage CPP_ASMLINKAGE __attribute__((regparm(0)))
  11 #define prevent_tail_call(ret) __asm__ ("" : "=r" (ret) : "0" (ret))
  12 /*
  13  * For 32-bit UML - mark functions implemented in assembly that use
  14  * regparm input parameters:
  15  */
  16 #define asmregparm __attribute__((regparm(3)))
  17 #endif
  18
  19 #ifdef CONFIG_X86_ALIGNMENT_16
  20 #define __ALIGN .align 16,0x90
  21 #define __ALIGN_STR ".align 16,0x90"
  22 #endif
  23
  24 #endif
  25