| 1 | /* Mach-O object file format for gas, the assembler. |
| 2 | Copyright (C) 2009-2020 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 */ |