| Omar Ramirez Luna | 26f8db7 | 2010-06-23 16:02:02 +0300 | [diff] [blame] | 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_ */ |