From 866da18e1f247d117a45107f9065f77543e47c8b Mon Sep 17 00:00:00 2001 From: David Edelsohn Date: Fri, 10 Feb 1995 01:40:36 +0000 Subject: [PATCH] * archures (bfd_mach_arc_base): #define. (bfd_mach_arc_host, bfd_mach_arc_graphics, bfd_mach_arc_audio): Ditto. * cpu-arc.c (arch_info_struct): Define entries for each cpu variant. (bfd_arc_arch): Link each one in. (arc_get_mach): New function. * elf32-arc.c (arc_info_to_howto_rel): Renamed from arc_info_to_howto. (elf_info_to_howto_rel): Update. (arc_elf_object_p, arc_elf_final_write_processing): New functions. (elf_backend_object_p): Define. (elf_backend_final_write_processing): Define. (USE_REL): Define. --- bfd/ChangeLog | 16 +++++++ bfd/elf32-arc.c | 108 +++++++++++++++++++++++++++++++++++++++++------- 2 files changed, 110 insertions(+), 14 deletions(-) diff --git a/bfd/ChangeLog b/bfd/ChangeLog index c5e0a9817cc..79146ab3449 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,19 @@ +start-sanitize-arc +Thu Feb 9 17:31:40 1995 Doug Evans + + * archures (bfd_mach_arc_base): #define. + (bfd_mach_arc_host, bfd_mach_arc_graphics, bfd_mach_arc_audio): Ditto. + * cpu-arc.c (arch_info_struct): Define entries for each cpu variant. + (bfd_arc_arch): Link each one in. + (arc_get_mach): New function. + * elf32-arc.c (arc_info_to_howto_rel): Renamed from arc_info_to_howto. + (elf_info_to_howto_rel): Update. + (arc_elf_object_p, arc_elf_final_write_processing): New functions. + (elf_backend_object_p): Define. + (elf_backend_final_write_processing): Define. + (USE_REL): Define. +end-sanitize-arc + Thu Feb 9 18:36:52 1995 Ken Raeburn * Makefile.in (BFD32_BACKENDS): Add i386msdos.o. diff --git a/bfd/elf32-arc.c b/bfd/elf32-arc.c index 7db11ad65ec..c4ed5c6e5ff 100644 --- a/bfd/elf32-arc.c +++ b/bfd/elf32-arc.c @@ -1,5 +1,5 @@ /* ARC-specific support for 32-bit ELF - Copyright (C) 1994 Free Software Foundation, Inc. + Copyright (C) 1994, 1995 Free Software Foundation, Inc. Contributed by Doug Evans (dje@cygnus.com). This file is part of BFD, the Binary File Descriptor library. @@ -22,13 +22,20 @@ Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ #include "sysdep.h" #include "libbfd.h" #include "libelf.h" +#include "elf/arc.h" static bfd_reloc_status_type arc_elf_unsupported_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); -static const struct reloc_howto_struct *bfd_elf32_bfd_reloc_type_lookup +static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup PARAMS ((bfd *abfd, bfd_reloc_code_real_type code)); -static void arc_info_to_howto - PARAMS ((bfd *abfd, arelent *cache_ptr, Elf32_Internal_Rela *dst)); +static void arc_info_to_howto_rel + PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); +static boolean arc_elf_object_p PARAMS ((bfd *)); +static void arc_elf_final_write_processing PARAMS ((bfd *, boolean)); + +/* Try to minimize the amount of space occupied by relocation tables + on the ROM. */ +#define USE_REL enum reloc_type { @@ -103,7 +110,7 @@ arc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section, abort (); } -/* Map BFD reloc types to PowerPC ELF reloc types. */ +/* Map BFD reloc types to ARC ELF reloc types. */ struct arc_reloc_map { @@ -119,7 +126,7 @@ static const struct arc_reloc_map arc_reloc_map[] = { BFD_RELOC_ARC_B22_PCREL, R_ARC_B22_PCREL }, }; -static const struct reloc_howto_struct * +static reloc_howto_type * bfd_elf32_bfd_reloc_type_lookup (abfd, code) bfd *abfd; bfd_reloc_code_real_type code; @@ -140,20 +147,93 @@ bfd_elf32_bfd_reloc_type_lookup (abfd, code) /* Set the howto pointer for an ARC ELF reloc. */ static void -arc_info_to_howto (abfd, cache_ptr, dst) +arc_info_to_howto_rel (abfd, cache_ptr, dst) bfd *abfd; arelent *cache_ptr; - Elf32_Internal_Rela *dst; + Elf32_Internal_Rel *dst; +{ + unsigned int r_type; + + r_type = ELF32_R_TYPE (dst->r_info); + BFD_ASSERT (r_type < (unsigned int) R_ARC_max); + cache_ptr->howto = &elf_arc_howto_table[r_type]; +} + +/* Set the right machine number for an ARC ELF file. */ + +static boolean +arc_elf_object_p (abfd) + bfd *abfd; +{ + int mach; + unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_CPU; + + switch (arch) + { + case E_ARC_CPU_BASE: + mach = bfd_mach_arc_base; + break; + case E_ARC_CPU_HOST: + mach = bfd_mach_arc_host; + break; + case E_ARC_CPU_GRAPHICS: + mach = bfd_mach_arc_graphics; + break; + case E_ARC_CPU_AUDIO: + mach = bfd_mach_arc_audio; + break; + default: + /* Unknown cpu type. ??? What to do? */ + return false; + } + + (void) bfd_default_set_arch_mach (abfd, bfd_arch_arc, mach); + return true; +} + +/* The final processing done just before writing out an ARC ELF object file. + This gets the ARC architecture right based on the machine number. */ + +static void +arc_elf_final_write_processing (abfd, linker) + bfd *abfd; + boolean linker; { - BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_ARC_max); - cache_ptr->howto = &elf_arc_howto_table[ELF32_R_TYPE (dst->r_info)]; + int mach; + unsigned long val; + + switch (mach = bfd_get_mach (abfd)) + { + case bfd_mach_arc_base: + val = E_ARC_CPU_BASE; + break; + case bfd_mach_arc_host: + val = E_ARC_CPU_HOST; + break; + case bfd_mach_arc_graphics: + val = E_ARC_CPU_GRAPHICS; + break; + case bfd_mach_arc_audio: + val = E_ARC_CPU_AUDIO; + break; + default: + return; + } + + elf_elfheader (abfd)->e_flags &=~ EF_ARC_CPU; + elf_elfheader (abfd)->e_flags |= val; } -#define TARGET_BIG_SYM bfd_elf32_arc_vec -#define TARGET_BIG_NAME "elf32-arc" +#define TARGET_LITTLE_SYM bfd_elf32_arc_vec +#define TARGET_LITTLE_NAME "elf32-arc" #define ELF_ARCH bfd_arch_arc #define ELF_MACHINE_CODE EM_CYGNUS_ARC -#define ELF_MAXPAGESIZE 0x10000 -#define elf_info_to_howto arc_info_to_howto +#define ELF_MAXPAGESIZE 0x1000 + +#define elf_info_to_howto 0 +#define elf_info_to_howto_rel arc_info_to_howto_rel +#define elf_backend_object_p arc_elf_object_p +#define elf_backend_final_write_processing \ + arc_elf_final_write_processing #include "elf32-target.h" -- 2.30.2