1/* SPU specific support for 32-bit ELF.
2
3   Copyright (C) 2006-2017 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
21struct 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
78struct spu_elf_stack_info;
79
80struct _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
103enum _ovly_flavour
104{
105  ovly_normal,
106  ovly_soft_icache
107};
108
109struct _ovl_stream
110{
111  const void *start;
112  const void *end;
113};
114
115extern void spu_elf_setup (struct bfd_link_info *, struct spu_elf_params *);
116extern void spu_elf_plugin (int);
117extern bfd_boolean spu_elf_open_builtin_lib (bfd **,
118					     const struct _ovl_stream *);
119extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *);
120extern bfd_boolean spu_elf_size_sections (bfd *, struct bfd_link_info *);
121extern int spu_elf_find_overlays (struct bfd_link_info *);
122extern int spu_elf_size_stubs (struct bfd_link_info *);
123extern void spu_elf_place_overlay_data (struct bfd_link_info *);
124extern asection *spu_elf_check_vma (struct bfd_link_info *);
125