bfd/elf32-spu.h

   1 /* SPU specific support for 32-bit ELF.
   2
   3    Copyright 2006, 2007, 2008, 2009 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 *);