payloads/libpayload/include/arm/arch/asm.h

   1 /*
   2  *
   3  * Copyright 2013 Google Inc.
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; version 2 of the License.
   8  *
   9  * This program is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12  * GNU General Public License for more details.
  13  */
  14
  15 #ifndef __ARM_ASM_H
  16 #define __ARM_ASM_H
  17
  18 /* __arm__ is defined regardless of Thumb mode, so need to order this right */
  19 #if defined __thumb2__
  20 #  define ARM(x...)
  21 #  define THUMB(x...)   x
  22 #  define W(instr)      instr.w
  23 #elif defined __thumb__
  24 #  error You are not compiling Thumb2, this won't work!
  25 #else
  26 #  define ARM(x...)     x
  27 #  define THUMB(x...)
  28 #  define W(instr)      instr
  29 #endif
  30
  31 #define ALIGN .align 0
  32
  33 #define ENDPROC(name) \
  34         .type name, %function; \
  35         END(name)
  36
  37 #define ENTRY(name) \
  38         .section .text.name, "ax", %progbits; \
  39         .global name; \
  40         ALIGN; \
  41         name:
  42
  43 #define END(name) \
  44         .size name, .-name
  45
  46 /* Thumb code uses the (new) unified assembly syntax. */
  47 THUMB(  .syntax unified )
  48
  49 #endif  /* __ARM_ASM_H */