projects / thirdparty / binutils-gdb.git / blame
| Commit | Line | Data |
|---|---|---|
| a01b9fa4 KH |
1 | /* bit_fix.h |
| 2 | Copyright (C) 1987, 1992, 2000 Free Software Foundation, Inc. | |
| 252b5132 RH |
3 | |
| 4 | This file is part of GAS, the GNU Assembler. | |
| 5 | ||
| 6 | GAS is free software; you can redistribute it and/or modify | |
| 7 | it under the terms of the GNU General Public License as published by | |
| 8 | the Free Software Foundation; either version 2, or (at your option) | |
| 9 | any later version. | |
| 10 | ||
| 11 | GAS is distributed in the hope that it will be useful, | |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
| 14 | GNU General Public License for more details. | |
| 15 | ||
| 16 | You should have received a copy of the GNU General Public License | |
| a01b9fa4 KH |
17 | along with GAS; see the file COPYING. If not, write to the Free |
| 18 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA | |
| 19 | 02111-1307, USA. */ | |
| 252b5132 RH |
20 | |
| 21 | /* The bit_fix was implemented to support machines that need variables | |
| 22 | to be inserted in bitfields other than 1, 2 and 4 bytes. | |
| 23 | Furthermore it gives us a possibillity to mask in bits in the symbol | |
| 24 | when it's fixed in the objectcode and check the symbols limits. | |
| 25 | ||
| 26 | The or-mask is used to set the huffman bits in displacements for the | |
| 27 | ns32k port. | |
| 28 | The acbi, addqi, movqi, cmpqi instruction requires an assembler that | |
| 29 | can handle bitfields. Ie handle an expression, evaluate it and insert | |
| 30 | the result in an some bitfield. ( ex: 5 bits in a short field of a opcode) | |
| 31 | */ | |
| 32 | ||
| 33 | #ifndef __bit_fix_h__ | |
| 34 | #define __bit_fix_h__ | |
| 35 | ||
| 36 | struct bit_fix | |
| 37 | { | |
| 38 | int fx_bit_size; /* Length of bitfield */ | |
| 39 | int fx_bit_offset; /* Bit offset to bitfield */ | |
| 40 | long fx_bit_base; /* Where do we apply the bitfix. | |
| a01b9fa4 | 41 | If this is zero, default is assumed. */ |
| 252b5132 RH |
42 | long fx_bit_base_adj; /* Adjustment of base */ |
| 43 | long fx_bit_max; /* Signextended max for bitfield */ | |
| 44 | long fx_bit_min; /* Signextended min for bitfield */ | |
| 45 | long fx_bit_add; /* Or mask, used for huffman prefix */ | |
| 46 | }; | |
| 47 | typedef struct bit_fix bit_fixS; | |
| 48 | ||
| 49 | #endif /* __bit_fix_h__ */ |