diff options
Diffstat (limited to 'binutils-2.24/bfd/aout-cris.c')
| -rw-r--r-- | binutils-2.24/bfd/aout-cris.c | 290 |
1 files changed, 0 insertions, 290 deletions
diff --git a/binutils-2.24/bfd/aout-cris.c b/binutils-2.24/bfd/aout-cris.c deleted file mode 100644 index 3e3d21ad..00000000 --- a/binutils-2.24/bfd/aout-cris.c +++ /dev/null @@ -1,290 +0,0 @@ -/* BFD backend for CRIS a.out binaries. - Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2007, 2009, 2012 - Free Software Foundation, Inc. - Contributed by Axis Communications AB. - Written by Hans-Peter Nilsson. - - This file is part of BFD, the Binary File Descriptor library. - - This program is free software; you can redistribute it and/or modify - it under the terms of the GNU General Public License as published by - the Free Software Foundation; either version 3 of the License, or - (at your option) any later version. - - This program is distributed in the hope that it will be useful, - but WITHOUT ANY WARRANTY; without even the implied warranty of - MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - GNU General Public License for more details. - - You should have received a copy of the GNU General Public License - along with this program; if not, write to the Free Software - Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, - MA 02110-1301, USA. */ - -/* See info in the file PORTING for documentation of these macros and - functions. Beware; some of the information there is outdated. */ - -#define N_HEADER_IN_TEXT(x) 0 -#define N_TXTOFF(x) 32 -#define ENTRY_CAN_BE_ZERO -#define TEXT_START_ADDR 0 - -/* Without reading symbols to get the text start symbol, there is no way - to know where the text segment starts in an a.out file. Defaulting to - anything as constant as TEXT_START_ADDR is bad. But we can guess from - the entry point, which is usually within the first 64k of the text - segment. We also assume here that the text segment is 64k-aligned. - FIXME: It is also wrong to assume that data and bss follow immediately - after text, but with those, we don't have any choice besides reading - symbol info, and luckily there's no pressing need for correctness for - those vma:s at this time. */ -#define N_TXTADDR(x) ((x).a_entry & ~(bfd_vma) 0xffff) - -/* If you change this to 4, you can not link to an address N*4+2. */ -#define SEGMENT_SIZE 2 - -/* For some reason, if the a.out file has Z_MAGIC, then - adata(abfd).exec_bytes_size is not used, but rather - adata(abfd).zmagic_disk_block_size, even though the exec_header is - *not* included in the text segment. A simple workaround is to - #define ZMAGIC_DISK_BLOCK_SIZE, which is used if defined; otherwise - TARGET_PAGE_SIZE is used. */ -#define ZMAGIC_DISK_BLOCK_SIZE N_TXTOFF (0) - -/* It seems odd at first to set a page-size this low, but gives greater - freedom in where things can be linked. The drawback is that you have - to set alignment and padding in linker scripts. */ -#define TARGET_PAGE_SIZE SEGMENT_SIZE -#define TARGETNAME "a.out-cris" - -/* The definition here seems not used; just provided as a convention. */ -#define DEFAULT_ARCH bfd_arch_cris - -/* Do not "beautify" the CONCAT* macro args. Traditional C will not - remove whitespace added here, and thus will fail to concatenate - the tokens. */ -#define MY(OP) CONCAT2 (cris_aout_,OP) -#define NAME(x, y) CONCAT3 (cris_aout,_32_,y) - -#include "sysdep.h" -#include "bfd.h" - -/* Version 1 of the header. */ -#define MY_exec_hdr_flags 1 - -#define MY_write_object_contents MY (write_object_contents) -static bfd_boolean MY (write_object_contents) (bfd *); - -/* Forward this, so we can use a pointer to it in PARAMS. */ -struct reloc_ext_external; - -#define MY_swap_ext_reloc_out MY (swap_ext_reloc_out) -static void MY (swap_ext_reloc_out) (bfd *, arelent *, struct reloc_ext_external *); - -#define MY_swap_ext_reloc_in MY (swap_ext_reloc_in) -static void MY (swap_ext_reloc_in) (bfd *, struct reloc_ext_external *, - arelent *, asymbol **, bfd_size_type); - -#define MY_set_sizes MY (set_sizes) -static bfd_boolean MY (set_sizes) (bfd *); - -/* To set back reloc_size to ext, we make MY (set_sizes) be called - through this construct. Note that MY_set_arch_mach is only called - through SET_ARCH_MACH. The default bfd_default_set_arch_mach will - not call set_sizes. */ - -#define MY_set_arch_mach NAME (aout, set_arch_mach) -#define SET_ARCH_MACH(BFD, EXEC) \ - MY_set_arch_mach (BFD, DEFAULT_ARCH, N_MACHTYPE (EXEC)) - -/* These macros describe the binary layout of the reloc information we - use in a file. */ -#define RELOC_EXT_BITS_EXTERN_LITTLE 0x80 -#define RELOC_EXT_BITS_TYPE_LITTLE 3 -#define RELOC_EXT_BITS_TYPE_SH_LITTLE 0 - -#ifndef MY_get_section_contents -#define MY_get_section_contents aout_32_get_section_contents -#endif - -#define MACHTYPE_OK(mtype) ((mtype) == M_CRIS) - -/* Include generic functions (some are overridden above). */ -#include "aout32.c" -#include "aout-target.h" - -/* We need our own version to set header flags. */ - -static bfd_boolean -MY (write_object_contents) (bfd *abfd) -{ - struct external_exec exec_bytes; - struct internal_exec *execp = exec_hdr (abfd); - - /* We set the reloc type to RELOC_EXT_SIZE, although setting it at all - seems unnecessary when inspecting as and ld behavior (not an - exhaustive inspection). The default write_object_contents - definition sets RELOC_EXT_SIZE, so we follow suite and set it too. */ - obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; - - /* Setting N_SET_MACHTYPE and using N_SET_FLAGS is not performed by - the default definition. */ - if (bfd_get_arch (abfd) == bfd_arch_cris) - N_SET_MACHTYPE (*execp, M_CRIS); - - N_SET_FLAGS (*execp, aout_backend_info (abfd)->exec_hdr_flags); - - WRITE_HEADERS (abfd, execp); - - return TRUE; -} - -/* We need our own for these reasons: - - Assert that a normal 8, 16 or 32 reloc is output. - - Fix what seems to be a weak-bug (perhaps there for valid reasons). */ - -static void -MY (swap_ext_reloc_out) (bfd *abfd, - arelent *g, - struct reloc_ext_external *natptr) -{ - int r_index; - int r_extern; - unsigned int r_type; - bfd_vma r_addend; - asymbol *sym = *(g->sym_ptr_ptr); - asection *output_section = sym->section->output_section; - - PUT_WORD (abfd, g->address, natptr->r_address); - - r_type = (unsigned int) g->howto->type; - - r_addend = g->addend; - if ((sym->flags & BSF_SECTION_SYM) != 0) - r_addend += (*(g->sym_ptr_ptr))->section->output_section->vma; - - /* If this relocation is relative to a symbol then set the - r_index to the symbols index, and the r_extern bit. - - Absolute symbols can come in in two ways, either as an offset - from the abs section, or as a symbol which has an abs value. - check for that here. */ - - if (bfd_is_abs_section (bfd_get_section (sym))) - { - r_extern = 0; - r_index = N_ABS; - } - else if ((sym->flags & BSF_SECTION_SYM) == 0) - { - if (bfd_is_und_section (bfd_get_section (sym)) - /* Remember to check for weak symbols; they count as global. */ - || (sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0) - r_extern = 1; - else - r_extern = 0; - r_index = (*(g->sym_ptr_ptr))->KEEPIT; - } - else - { - /* Just an ordinary section. */ - r_extern = 0; - r_index = output_section->target_index; - } - - /* The relocation type is the same as the canonical ones, but only - the first 3 are used: RELOC_8, RELOC_16, RELOC_32. - We may change this later, but assert this for the moment. */ - if (r_type > 2) - { - (*_bfd_error_handler) (_("%s: Invalid relocation type exported: %d"), - bfd_get_filename (abfd), r_type); - - bfd_set_error (bfd_error_wrong_format); - } - - /* Now the fun stuff. */ - natptr->r_index[2] = r_index >> 16; - natptr->r_index[1] = r_index >> 8; - natptr->r_index[0] = r_index; - natptr->r_type[0] = - (r_extern ? RELOC_EXT_BITS_EXTERN_LITTLE : 0) - | (r_type << RELOC_EXT_BITS_TYPE_SH_LITTLE); - - PUT_WORD (abfd, r_addend, natptr->r_addend); -} - -/* We need our own to assert that a normal 8, 16 or 32 reloc is input. */ - -static void -MY (swap_ext_reloc_in) (bfd *abfd, - struct reloc_ext_external *bytes, - arelent *cache_ptr, - asymbol **symbols, - bfd_size_type symcount) -{ - unsigned int r_index; - int r_extern; - unsigned int r_type; - struct aoutdata *su = &(abfd->tdata.aout_data->a); - - cache_ptr->address = (GET_SWORD (abfd, bytes->r_address)); - - /* Now the fun stuff. */ - r_index = (bytes->r_index[2] << 16) - | (bytes->r_index[1] << 8) - | bytes->r_index[0]; - r_extern = (0 != (bytes->r_type[0] & RELOC_EXT_BITS_EXTERN_LITTLE)); - r_type = ((bytes->r_type[0]) >> RELOC_EXT_BITS_TYPE_SH_LITTLE) - & RELOC_EXT_BITS_TYPE_LITTLE; - - if (r_type > 2) - { - (*_bfd_error_handler) (_("%B: Invalid relocation type imported: %d"), - abfd, r_type); - - bfd_set_error (bfd_error_wrong_format); - } - - cache_ptr->howto = howto_table_ext + r_type; - - if (r_extern && r_index > symcount) - { - (*_bfd_error_handler) - (_("%B: Bad relocation record imported: %d"), abfd, r_index); - - bfd_set_error (bfd_error_wrong_format); - - /* We continue, so we can catch further errors. */ - r_extern = 0; - r_index = N_ABS; - } - - /* Magically uses r_extern, symbols etc. Ugly, but it's what's in the - default. */ - MOVE_ADDRESS (GET_SWORD (abfd, bytes->r_addend)); -} - -/* We use the same as the default, except that we also set - "obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE;", to avoid changing - NAME (aout, set_arch_mach) in aoutx. */ - -static bfd_boolean -MY (set_sizes) (bfd *abfd) -{ - /* Just as the default in aout-target.h (with some #ifdefs folded)... */ - - adata (abfd).page_size = TARGET_PAGE_SIZE; - adata (abfd).segment_size = SEGMENT_SIZE; - adata (abfd).zmagic_disk_block_size = ZMAGIC_DISK_BLOCK_SIZE; - adata (abfd).exec_bytes_size = EXEC_BYTES_SIZE; - - /* ... except for that we have the extended reloc. The alternative - would be to add a check on bfd_arch_cris in NAME (aout, - set_arch_mach) in aoutx.h, but I don't want to do that since - target-specific things should not be added there. */ - - obj_reloc_entry_size (abfd) = RELOC_EXT_SIZE; - - return TRUE; -} |