1*3d8817e4Smiod /* bit_fix.h 2*3d8817e4Smiod Copyright 1987, 1992, 2000, 2001, 2003 Free Software Foundation, Inc. 3*3d8817e4Smiod 4*3d8817e4Smiod This file is part of GAS, the GNU Assembler. 5*3d8817e4Smiod 6*3d8817e4Smiod GAS is free software; you can redistribute it and/or modify 7*3d8817e4Smiod it under the terms of the GNU General Public License as published by 8*3d8817e4Smiod the Free Software Foundation; either version 2, or (at your option) 9*3d8817e4Smiod any later version. 10*3d8817e4Smiod 11*3d8817e4Smiod GAS is distributed in the hope that it will be useful, 12*3d8817e4Smiod but WITHOUT ANY WARRANTY; without even the implied warranty of 13*3d8817e4Smiod MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*3d8817e4Smiod GNU General Public License for more details. 15*3d8817e4Smiod 16*3d8817e4Smiod You should have received a copy of the GNU General Public License 17*3d8817e4Smiod along with GAS; see the file COPYING. If not, write to the Free 18*3d8817e4Smiod Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19*3d8817e4Smiod 02110-1301, USA. */ 20*3d8817e4Smiod 21*3d8817e4Smiod /* The bit_fix was implemented to support machines that need variables 22*3d8817e4Smiod to be inserted in bitfields other than 1, 2 and 4 bytes. 23*3d8817e4Smiod Furthermore it gives us a possibility to mask in bits in the symbol 24*3d8817e4Smiod when it's fixed in the objectcode and check the symbols limits. 25*3d8817e4Smiod 26*3d8817e4Smiod The or-mask is used to set the huffman bits in displacements for the 27*3d8817e4Smiod ns32k port. 28*3d8817e4Smiod The acbi, addqi, movqi, cmpqi instruction requires an assembler that 29*3d8817e4Smiod can handle bitfields. Ie. handle an expression, evaluate it and insert 30*3d8817e4Smiod the result in some bitfield. (eg: 5 bits in a short field of an opcode) 31*3d8817e4Smiod */ 32*3d8817e4Smiod 33*3d8817e4Smiod #ifndef __bit_fix_h__ 34*3d8817e4Smiod #define __bit_fix_h__ 35*3d8817e4Smiod 36*3d8817e4Smiod struct bit_fix { 37*3d8817e4Smiod int fx_bit_size; /* Length of bitfield */ 38*3d8817e4Smiod int fx_bit_offset; /* Bit offset to bitfield */ 39*3d8817e4Smiod long fx_bit_base; /* Where do we apply the bitfix. 40*3d8817e4Smiod If this is zero, default is assumed. */ 41*3d8817e4Smiod long fx_bit_base_adj; /* Adjustment of base */ 42*3d8817e4Smiod long fx_bit_max; /* Signextended max for bitfield */ 43*3d8817e4Smiod long fx_bit_min; /* Signextended min for bitfield */ 44*3d8817e4Smiod long fx_bit_add; /* Or mask, used for huffman prefix */ 45*3d8817e4Smiod }; 46*3d8817e4Smiod typedef struct bit_fix bit_fixS; 47*3d8817e4Smiod 48*3d8817e4Smiod #endif /* __bit_fix_h__ */ 49