drivers/staging/tidspbridge/dynload/reloc_table.h

   1 /*
   2  * reloc_table.h
   3  *
   4  * DSP-BIOS Bridge driver support functions for TI OMAP processors.
   5  *
   6  * Copyright (C) 2005-2006 Texas Instruments, Inc.
   7  *
   8  * This package is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License version 2 as
  10  * published by the Free Software Foundation.
  11  *
  12  * THIS PACKAGE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
  13  * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
  14  * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
  15  */
  16
  17 #ifndef _RELOC_TABLE_H_
  18 #define _RELOC_TABLE_H_
  19 /*
  20  * Table of relocation operator properties
  21  */
  22 #include <linux/types.h>
  23
  24 /* How does this relocation operation access the program image? */
  25 #define ROP_N   0               /* does not access image */
  26 #define ROP_R   1               /* read from image */
  27 #define ROP_W   2               /* write to image */
  28 #define ROP_RW  3               /* read from and write to image */
  29
  30 /* For program image access, what are the overflow rules for the bit field? */
  31 /* Beware! Procedure repack depends on this encoding */
  32 #define ROP_ANY 0               /* no overflow ever, just truncate the value */
  33 #define ROP_SGN 1               /* signed field */
  34 #define ROP_UNS 2               /* unsigned field */
  35 #define ROP_MAX 3       /* allow maximum range of either signed or unsigned */
  36
  37 /* How does the relocation operation use the symbol reference */
  38 #define ROP_IGN 0               /* no symbol is referenced */
  39 #define ROP_LIT 0               /* use rp->UVAL literal field */
  40 #define ROP_SYM 1               /* symbol value is used in relocation */
  41 #define ROP_SYMD 2              /* delta value vs last link is used */
  42
  43 /* How does the reloc op use the stack? */
  44 #define RSTK_N 0                /* Does not use */
  45 #define RSTK_POP 1              /* Does a POP */
  46 #define RSTK_UOP 2              /* Unary op, stack position unaffected */
  47 #define RSTK_PSH 3              /* Does a push */
  48
  49 /*
  50  * Computational actions performed by the dynamic loader
  51  */
  52 enum dload_actions {
  53         /* don't alter the current val (from stack or mem fetch) */
  54         RACT_VAL,
  55         /* set value to reference amount (from symbol reference) */
  56         RACT_ASGN,
  57         RACT_ADD,               /* add reference to value */
  58         RACT_PCR,               /* add reference minus PC delta to value */
  59         RACT_ADDISP,            /* add reference plus R_DISP */
  60         RACT_ASGPC,             /* set value to section addr plus reference */
  61
  62         RACT_PLUS,              /* stack + */
  63         RACT_SUB,               /* stack - */
  64         RACT_NEG,               /* stack unary - */
  65
  66         RACT_MPY,               /* stack * */
  67         RACT_DIV,               /* stack / */
  68         RACT_MOD,               /* stack % */
  69
  70         RACT_SR,                /* stack unsigned >> */
  71         RACT_ASR,               /* stack signed >> */
  72         RACT_SL,                /* stack << */
  73         RACT_AND,               /* stack & */
  74         RACT_OR,                /* stack | */
  75         RACT_XOR,               /* stack ^ */
  76         RACT_NOT,               /* stack ~ */
  77         RACT_C6SECT,            /* for C60 R_SECT op */
  78         RACT_C6BASE,            /* for C60 R_BASE op */
  79         RACT_C6DSPL,            /* for C60 scaled 15-bit displacement */
  80         RACT_PCR23T             /* for ARM Thumb long branch */
  81 };
  82
  83 /*
  84  * macros used to extract values
  85  */
  86 #define RFV_POSN(aaa) ((aaa) & 0xF)
  87 #define RFV_WIDTH(aaa) (((aaa) >> 4) & 0x3F)
  88 #define RFV_ACTION(aaa) ((aaa) >> 10)
  89
  90 #define RFV_SIGN(iii) (((iii) >> 2) & 0x3)
  91 #define RFV_SYM(iii) (((iii) >> 4) & 0x3)
  92 #define RFV_STK(iii) (((iii) >> 6) & 0x3)
  93 #define RFV_ACCS(iii) ((iii) & 0x3)
  94
  95 #if (TMS32060)
  96 #define RFV_SCALE(iii) ((iii) >> 11)
  97 #define RFV_BIGOFF(iii) (((iii) >> 8) & 0x7)
  98 #else
  99 #define RFV_BIGOFF(iii) ((iii) >> 8)
 100 #endif
 101
 102 #endif /* _RELOC_TABLE_H_ */