1 /* Mach-O object file format for gas, the assembler. 2 Copyright (C) 2009-2016 Free Software Foundation, Inc. 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 8 published by the Free Software Foundation; either version 3, 9 or (at your option) any later version. 10 11 GAS is distributed in the hope that it will be useful, but 12 WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See 14 the GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with GAS; see the file COPYING. If not, write to the Free 18 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 19 02110-1301, USA. */ 20 21 #ifndef _OBJ_MACH_O_H 22 #define _OBJ_MACH_O_H 23 24 /* Tag to validate Mach-O object file format processing */ 25 #define OBJ_MACH_O 1 26 27 #include "bfd/mach-o.h" 28 29 #include "targ-cpu.h" 30 31 #define OUTPUT_FLAVOR bfd_target_mach_o_flavour 32 33 /* We want to control how the sections are pre-defined on startup. */ 34 #define obj_begin() mach_o_begin () 35 extern void mach_o_begin (void); 36 37 /* All our align expressions are power of two. */ 38 #define USE_ALIGN_PTWO 1 39 40 /* Common symbols can carry alignment information. */ 41 #ifndef S_SET_ALIGN 42 #define S_SET_ALIGN(S,V) do {\ 43 bfd_mach_o_asymbol *___s = (bfd_mach_o_asymbol *) symbol_get_bfdsym (S);\ 44 ___s->n_desc = (___s->n_desc & 0xf0ff) | (((V) & 0x0f) << 8);\ 45 } while (0) 46 #endif 47 48 extern const pseudo_typeS mach_o_pseudo_table[]; 49 50 #ifndef obj_pop_insert 51 #define obj_pop_insert() pop_insert (mach_o_pseudo_table) 52 #endif 53 54 #define obj_sec_sym_ok_for_reloc(SEC) 1 55 56 #define obj_read_begin_hook() {;} 57 #define obj_symbol_new_hook(s) {;} 58 59 #define EMIT_SECTION_SYMBOLS 0 60 61 struct obj_mach_o_symbol_data 62 { 63 /* If the symbol represents a subsection, this is the size of the subsection. 64 This is used to check whether a local symbol belongs to a subsection. */ 65 valueT subsection_size; 66 }; 67 #define OBJ_SYMFIELD_TYPE struct obj_mach_o_symbol_data 68 69 #define obj_frob_colon obj_mach_o_frob_colon 70 extern void obj_mach_o_frob_colon (const char *); 71 72 /* Called when a label is defined. Mach-O uses this to create subsections. */ 73 #define obj_frob_label obj_mach_o_frob_label 74 extern void obj_mach_o_frob_label (symbolS *); 75 76 #define obj_frob_symbol(s, punt) punt = obj_mach_o_frob_symbol(s) 77 extern int obj_mach_o_frob_symbol (struct symbol *); 78 79 #define OBJ_PROCESS_STAB(SEG,W,S,T,O,D) obj_mach_o_process_stab(W,S,T,O,D) 80 extern void obj_mach_o_process_stab (int, const char *,int, int, int); 81 82 struct obj_mach_o_frag_data 83 { 84 /* Symbol that corresponds to the subsection. */ 85 symbolS *subsection; 86 }; 87 88 #define OBJ_FRAG_TYPE struct obj_mach_o_frag_data 89 90 #define md_pre_output_hook obj_mach_o_pre_output_hook() 91 extern void obj_mach_o_pre_output_hook(void); 92 93 #define md_pre_relax_hook obj_mach_o_pre_relax_hook() 94 extern void obj_mach_o_pre_relax_hook (void); 95 96 #define md_post_relax_hook obj_mach_o_post_relax_hook() 97 extern void obj_mach_o_post_relax_hook (void); 98 99 #define obj_frob_file_after_relocs obj_mach_o_frob_file_after_relocs 100 extern void obj_mach_o_frob_file_after_relocs (void); 101 102 #define SET_SECTION_RELOCS(sec, relocs, n) \ 103 obj_mach_o_reorder_section_relocs (sec, relocs, n) 104 extern void obj_mach_o_reorder_section_relocs (asection *, arelent **, 105 unsigned int); 106 107 /* Emit relocs for local subtracts, to cater for subsections-via-symbols. */ 108 #define md_allow_local_subtract(LEFT, RIGHT, SECTION) \ 109 obj_mach_o_allow_local_subtract (LEFT, RIGHT, SECTION) 110 extern int obj_mach_o_allow_local_subtract (expressionS *, expressionS *, 111 segT); 112 113 struct fix; 114 extern int obj_mach_o_in_different_subsection (symbolS *a, symbolS *b); 115 extern int obj_mach_o_force_reloc (struct fix *fix); 116 extern int obj_mach_o_force_reloc_sub_same (struct fix *fix, segT seg); 117 extern int obj_mach_o_force_reloc_sub_local (struct fix *fix, segT seg); 118 119 #endif /* _OBJ_MACH_O_H */ 120
