| 1 | /* SPU specific support for 32-bit ELF. |
| 2 | |
| 3 | Copyright (C) 2006-2015 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software Foundation, |
| 19 | Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | struct spu_elf_params |
| 22 | { |
| 23 | /* Stash various callbacks for --auto-overlay. */ |
| 24 | void (*place_spu_section) (asection *, asection *, const char *); |
| 25 | bfd_size_type (*spu_elf_load_ovl_mgr) (void); |
| 26 | FILE *(*spu_elf_open_overlay_script) (void); |
| 27 | void (*spu_elf_relink) (void); |
| 28 | |
| 29 | /* Bit 0 set if --auto-overlay. |
| 30 | Bit 1 set if --auto-relink. |
| 31 | Bit 2 set if --overlay-rodata. */ |
| 32 | unsigned int auto_overlay : 3; |
| 33 | #define AUTO_OVERLAY 1 |
| 34 | #define AUTO_RELINK 2 |
| 35 | #define OVERLAY_RODATA 4 |
| 36 | |
| 37 | /* Type of overlays, enum _ovly_flavour. */ |
| 38 | unsigned int ovly_flavour : 1; |
| 39 | unsigned int compact_stub : 1; |
| 40 | |
| 41 | /* Set if we should emit symbols for stubs. */ |
| 42 | unsigned int emit_stub_syms : 1; |
| 43 | |
| 44 | /* Set if we want stubs on calls out of overlay regions to |
| 45 | non-overlay regions. */ |
| 46 | unsigned int non_overlay_stubs : 1; |
| 47 | |
| 48 | /* Set if lr liveness analysis should be done. */ |
| 49 | unsigned int lrlive_analysis : 1; |
| 50 | |
| 51 | /* Set if stack size analysis should be done. */ |
| 52 | unsigned int stack_analysis : 1; |
| 53 | |
| 54 | /* Set if __stack_* syms will be emitted. */ |
| 55 | unsigned int emit_stack_syms : 1; |
| 56 | |
| 57 | /* Set if non-icache code should be allowed in icache lines. */ |
| 58 | unsigned int non_ia_text : 1; |
| 59 | |
| 60 | /* Set when the .fixup section should be generated. */ |
| 61 | unsigned int emit_fixups : 1; |
| 62 | |
| 63 | /* Range of valid addresses for loadable sections. */ |
| 64 | bfd_vma local_store_lo; |
| 65 | bfd_vma local_store_hi; |
| 66 | |
| 67 | /* Control --auto-overlay feature. */ |
| 68 | unsigned int num_lines; |
| 69 | unsigned int line_size; |
| 70 | unsigned int max_branch; |
| 71 | unsigned int auto_overlay_fixed; |
| 72 | unsigned int auto_overlay_reserved; |
| 73 | int extra_stack_space; |
| 74 | }; |
| 75 | |
| 76 | /* Extra info kept for SPU sections. */ |
| 77 | |
| 78 | struct spu_elf_stack_info; |
| 79 | |
| 80 | struct _spu_elf_section_data |
| 81 | { |
| 82 | struct bfd_elf_section_data elf; |
| 83 | |
| 84 | union { |
| 85 | /* Info kept for input sections. */ |
| 86 | struct { |
| 87 | /* Stack analysis info kept for this section. */ |
| 88 | struct spu_elf_stack_info *stack_info; |
| 89 | } i; |
| 90 | |
| 91 | /* Info kept for output sections. */ |
| 92 | struct { |
| 93 | /* Non-zero for overlay output sections. */ |
| 94 | unsigned int ovl_index; |
| 95 | unsigned int ovl_buf; |
| 96 | } o; |
| 97 | } u; |
| 98 | }; |
| 99 | |
| 100 | #define spu_elf_section_data(sec) \ |
| 101 | ((struct _spu_elf_section_data *) elf_section_data (sec)) |
| 102 | |
| 103 | enum _ovly_flavour |
| 104 | { |
| 105 | ovly_normal, |
| 106 | ovly_soft_icache |
| 107 | }; |
| 108 | |
| 109 | struct _ovl_stream |
| 110 | { |
| 111 | const void *start; |
| 112 | const void *end; |
| 113 | }; |
| 114 | |
| 115 | extern void spu_elf_setup (struct bfd_link_info *, struct spu_elf_params *); |
| 116 | extern void spu_elf_plugin (int); |
| 117 | extern bfd_boolean spu_elf_open_builtin_lib (bfd **, |
| 118 | const struct _ovl_stream *); |
| 119 | extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *); |
| 120 | extern bfd_boolean spu_elf_size_sections (bfd *, struct bfd_link_info *); |
| 121 | extern int spu_elf_find_overlays (struct bfd_link_info *); |
| 122 | extern int spu_elf_size_stubs (struct bfd_link_info *); |
| 123 | extern void spu_elf_place_overlay_data (struct bfd_link_info *); |
| 124 | extern asection *spu_elf_check_vma (struct bfd_link_info *); |