1 /* tc-tic4x.h -- Assemble for the Texas TMS320C[34]X. 2 Copyright (C) 1997, 2002, 2003 Free Software Foundation. 3 4 Contributed by Michael P. Hayes (m.hayes@elec.canterbury.ac.nz) 5 6 This file is part of GAS, the GNU Assembler. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to 20 the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ 21 22 #define TC_TIC4X 23 #define TIC4X 24 25 #ifndef BFD_ASSEMBLER 26 #error TMS320C4x requires BFD_ASSEMBLER 27 #endif 28 29 #define TARGET_ARCH bfd_arch_tic4x 30 31 #define WORKING_DOT_WORD 32 33 /* There are a number of different formats used for local labels. gas 34 expects local labels either of the form `10$:' or `n:', where n is 35 a single digit. When LOCAL_LABEL_DOLLARS is defined labels of the 36 form `10$:' are expected. When LOCAL_LABEL_FB is defined labels of 37 the form `n:' are expected. The latter are expected to be referred 38 to using `nf' for a forward reference of `nb' for a backward 39 reference. 40 41 The local labels expected by the TI tools are of the form `$n:', 42 where the colon is optional. Now the $ character is considered to 43 be valid symbol name character, so gas doesn't recognise our local 44 symbols by default. Defining LEX_DOLLAR to be 1 means that gas 45 won't allow labels starting with $ and thus the hook 46 tc_unrecognized_line() will be called from read.c. We can thus 47 parse lines starting with $n as having local labels. 48 49 The other problem is the forward reference of local labels. If a 50 symbol is undefined, symbol_make() calls the md_undefined_symbol() 51 hook where we create a local label if recognised. */ 52 53 /* Don't stick labels starting with 'L' into symbol table of COFF file. */ 54 #define LOCAL_LABEL(name) ((name)[0] == '$' || (name)[0] == 'L') 55 56 #define TARGET_BYTES_BIG_ENDIAN 0 57 #define OCTETS_PER_BYTE_POWER 2 58 59 #define TARGET_ARCH bfd_arch_tic4x 60 #define BFD_ARCH TARGET_ARCH 61 62 #define TC_COUNT_RELOC(x) (x->fx_addsy) 63 #define TC_CONS_RELOC RELOC_32 64 #define TC_COFF_FIX2RTYPE(fixP) tc_coff_fix2rtype (fixP) 65 #define TC_COFF_SIZEMACHDEP(frag) tc_coff_sizemachdep (frag) 66 #define NEED_FX_R_TYPE 67 68 #define NOP_OPCODE 0x0c800000 69 70 #define reloc_type int 71 72 #define NO_RELOC 0 73 74 /* '||' denotes parallel instruction */ 75 #define DOUBLEBAR_PARALLEL 1 76 77 /* Labels are not required to have a colon for a suffix. */ 78 #define LABELS_WITHOUT_COLONS 1 79 80 /* Use $ as the section program counter (SPC). */ 81 #define DOLLAR_DOT 82 83 /* Accept numbers with a suffix, e.g. 0ffffh, 1010b. */ 84 #define NUMBERS_WITH_SUFFIX 1 85 86 extern int tic4x_unrecognized_line PARAMS ((int)); 87 #define tc_unrecognized_line(c) tic4x_unrecognized_line (c) 88 89 #define md_number_to_chars number_to_chars_littleendian 90 91 extern int tic4x_do_align PARAMS ((int, const char *, int, int)); 92 #define md_do_align(n,fill,len,max,label) if( tic4x_do_align (n,fill,len,max) ) goto label; 93 94 /* Start of line hook to remove parallel instruction operator || */ 95 extern void tic4x_start_line PARAMS ((void)); 96 #define md_start_line_hook() tic4x_start_line() 97 98 extern void tic4x_cleanup PARAMS ((void)); 99 #define md_cleanup() tic4x_cleanup() 100 101 extern void tic4x_end PARAMS ((void)); 102 #define md_end() tic4x_end() 103 104