bfd/elf32-spu.h

   1 /* SPU specific support for 32-bit ELF.
   2
   3    Copyright 2006, 2007, 2008 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 : 2;
  39
  40   /* Set if we should emit symbols for stubs.  */
  41   unsigned int emit_stub_syms : 1;
  42
  43   /* Set if we want stubs on calls out of overlay regions to
  44      non-overlay regions.  */
  45   unsigned int non_overlay_stubs : 1;
  46
  47   /* Set if lr liveness analysis should be done.  */
  48   unsigned int lrlive_analysis : 1;
  49
  50   /* Set if stack size analysis should be done.  */
  51   unsigned int stack_analysis : 1;
  52
  53   /* Set if __stack_* syms will be emitted.  */
  54   unsigned int emit_stack_syms : 1;
  55
  56   /* Range of valid addresses for loadable sections.  */
  57   bfd_vma local_store_lo;
  58   bfd_vma local_store_hi;
  59
  60   /* Control --auto-overlay feature.  */
  61   unsigned int num_lines;
  62   unsigned int line_size;
  63   unsigned int max_branch;
  64   unsigned int auto_overlay_fixed;
  65   unsigned int auto_overlay_reserved;
  66   int extra_stack_space;
  67 };
  68
  69 /* Extra info kept for SPU sections.  */
  70
  71 struct spu_elf_stack_info;
  72
  73 struct _spu_elf_section_data
  74 {
  75   struct bfd_elf_section_data elf;
  76
  77   union {
  78     /* Info kept for input sections.  */
  79     struct {
  80       /* Stack analysis info kept for this section.  */
  81       struct spu_elf_stack_info *stack_info;
  82     } i;
  83
  84     /* Info kept for output sections.  */
  85     struct {
  86       /* Non-zero for overlay output sections.  */
  87       unsigned int ovl_index;
  88       unsigned int ovl_buf;
  89     } o;
  90   } u;
  91 };
  92
  93 #define spu_elf_section_data(sec) \
  94   ((struct _spu_elf_section_data *) elf_section_data (sec))
  95
  96 enum _ovly_flavour
  97 {
  98   ovly_compact,
  99   ovly_normal,
 100   ovly_soft_icache,
 101   ovly_none
 102 };
 103
 104 struct _ovl_stream
 105 {
 106   const void *start;
 107   const void *end;
 108 };
 109
 110 extern void spu_elf_setup (struct bfd_link_info *, struct spu_elf_params *);
 111 extern void spu_elf_plugin (int);
 112 extern bfd_boolean spu_elf_open_builtin_lib (bfd **,
 113                                              const struct _ovl_stream *);
 114 extern bfd_boolean spu_elf_create_sections (struct bfd_link_info *);
 115 extern bfd_boolean spu_elf_find_overlays (struct bfd_link_info *);
 116 extern int spu_elf_size_stubs (struct bfd_link_info *);
 117 extern asection *spu_elf_check_vma (struct bfd_link_info *);