release/src-rt-6.x.4708/cfe/cfe/arch/arm/common/include/armmacros.h

   1 /*  *********************************************************************
   2     *  Broadcom Common Firmware Environment (CFE)
   3     *
   4     *  ARM Macros                               File: armmacros.h
   5     *
   6     *  Macros to deal with various arm-related things.
   7     *
   8     *  Author:
   9     *
  10     *********************************************************************
  11     *
  12     *  Copyright 2000,2001,2002,2003
  13     *  Broadcom Corporation. All rights reserved.
  14     *
  15     *  This software is furnished under license and may be used and
  16     *  copied only in accordance with the following terms and
  17     *  conditions.  Subject to these conditions, you may download,
  18     *  copy, install, use, modify and distribute modified or unmodified
  19     *  copies of this software in source and/or binary form.  No title
  20     *  or ownership is transferred hereby.
  21     *
  22     *  1) Any source code used, modified or distributed must reproduce
  23     *     and retain this copyright notice and list of conditions
  24     *     as they appear in the source file.
  25     *
  26     *  2) No right is granted to use any trade name, trademark, or
  27     *     logo of Broadcom Corporation.  The "Broadcom Corporation"
  28     *     name may not be used to endorse or promote products derived
  29     *     from this software without the prior written permission of
  30     *     Broadcom Corporation.
  31     *
  32     *  3) THIS SOFTWARE IS PROVIDED "AS-IS" AND ANY EXPRESS OR
  33     *     IMPLIED WARRANTIES, INCLUDING BUT NOT LIMITED TO, ANY IMPLIED
  34     *     WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
  35     *     PURPOSE, OR NON-INFRINGEMENT ARE DISCLAIMED. IN NO EVENT
  36     *     SHALL BROADCOM BE LIABLE FOR ANY DAMAGES WHATSOEVER, AND IN
  37     *     PARTICULAR, BROADCOM SHALL NOT BE LIABLE FOR DIRECT, INDIRECT,
  38     *     INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
  39     *     (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
  40     *     GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
  41     *     BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  42     *     OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
  43     *     TORT (INCLUDING NEGLIGENCE OR OTHERWISE), EVEN IF ADVISED OF
  44     *     THE POSSIBILITY OF SUCH DAMAGE.
  45     ********************************************************************* */
  46
  47 /*  *********************************************************************
  48     *  32/64-bit macros
  49     ********************************************************************* */
  50
  51 #ifdef __long64
  52 #define _VECT_  .dword
  53 #define _LONG_  .dword
  54 #define REGSIZE 8
  55 #define BPWSIZE 3               /* bits per word size */
  56 #define _TBLIDX(x) ((x)*REGSIZE)
  57 #else
  58 #define _VECT_  .word
  59 #define _LONG_  .word
  60 #define REGSIZE 4
  61 #define BPWSIZE 2
  62 #define _TBLIDX(x) ((x)*REGSIZE)
  63 #endif
  64
  65 #ifndef FUNC
  66   #if defined(__thumb__)
  67     #define FUNC(x)     THUMBLEAF(x)
  68   #else
  69     #define FUNC(x)     LEAF(x)
  70   #endif        /* __thumb__ */
  71 #endif
  72
  73 /* Debug macro */
  74 #ifdef TRACE
  75 #undef TRACE
  76 #endif
  77
  78 #ifdef BCMDBG
  79 #define TRACE(x) \
  80         ldr     r9,=(x); \
  81         ldr     r10,=SI_ENUM_BASE; \
  82         str     r9,[r10,#0x64]
  83
  84 #define TRACE1(x) \
  85         mov     r9,x; \
  86         ldr     r10,=SI_ENUM_BASE; \
  87         str     r9,[r10,#0x68]
  88
  89 #define TRACE2(x) \
  90         mov     r9,x; \
  91         ldr     r10,=SI_ENUM_BASE; \
  92         str     r9,[r10,#0x64]
  93 #else
  94 #define TRACE(x)
  95 #define TRACE1(x)
  96 #define TRACE2(x)
  97 #endif
  98
  99
 100 /*  *********************************************************************
 101     *  LOADREL(reg,label)
 102     *
 103     *  Load the address of a label, but do it in a position-independent
 104     *  way.
 105     *
 106     *  Input parameters:
 107     *      reg - register to load
 108     *      label - label whose address to load
 109     *
 110     *  Return value:
 111     *      ra is trashed!
 112     ********************************************************************* */
 113
 114 #if CFG_EMBEDDED_PIC
 115 #define LOADREL(reg,label)                      \
 116         .set noreorder ;                        \
 117         bal  1f        ;                        \
 118         nop            ;                        \
 119 1:      nop            ;                        \
 120         .set reorder   ;                        \
 121         la   reg,label-1b ;                     \
 122         addu reg,ra
 123 #else
 124 #define LOADREL(reg,label)                      \
 125         bl 1f;                                  \
 126 1:      nop;                                    \
 127         ldr reg,=1b;                            \
 128         sub lr,lr,reg;                          \
 129         ldr reg,label;                          \
 130         add reg,reg,lr;
 131 #endif