| /* BFD back-end for RISC iX (Acorn, arm) binaries. |
| Copyright 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2004, |
| 2005, 2007, 2010, 2012 Free Software Foundation, Inc. |
| Contributed by Richard Earnshaw (rwe@pegasus.esprit.ec.org) |
| |
| 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. */ |
| |
| |
| /* RISC iX overloads the MAGIC field to indicate more than just the usual |
| [ZNO]MAGIC values. Also included are squeezing information and |
| shared library usage. */ |
| |
| /* The following come from the man page. */ |
| #define SHLIBLEN 60 |
| |
| #define MF_IMPURE 00200 |
| #define MF_SQUEEZED 01000 |
| #define MF_USES_SL 02000 |
| #define MF_IS_SL 04000 |
| |
| /* Common combinations. */ |
| |
| /* Demand load (impure text). */ |
| #define IMAGIC (MF_IMPURE | ZMAGIC) |
| |
| /* OMAGIC with large header. |
| May contain a ref to a shared lib required by the object. */ |
| #define SPOMAGIC (MF_USES_SL | OMAGIC) |
| |
| /* A reference to a shared library. |
| The text portion of the object contains "overflow text" from |
| the shared library to be linked in with an object. */ |
| #define SLOMAGIC (MF_IS_SL | OMAGIC) |
| |
| /* Sqeezed demand paged. |
| NOTE: This interpretation of QMAGIC seems to be at variance |
| with that used on other architectures. */ |
| #define QMAGIC (MF_SQUEEZED | ZMAGIC) |
| |
| /* Program which uses sl. */ |
| #define SPZMAGIC (MF_USES_SL | ZMAGIC) |
| |
| /* Sqeezed ditto. */ |
| #define SPQMAGIC (MF_USES_SL | QMAGIC) |
| |
| /* Shared lib part of prog. */ |
| #define SLZMAGIC (MF_IS_SL | ZMAGIC) |
| |
| /* Sl which uses another. */ |
| #define SLPZMAGIC (MF_USES_SL | SLZMAGIC) |
| |
| #define N_SHARED_LIB(x) ((x).a_info & MF_USES_SL) |
| |
| /* Only a pure OMAGIC file has the minimal header. */ |
| #define N_TXTOFF(x) \ |
| ((x).a_info == OMAGIC \ |
| ? 32 \ |
| : (N_MAGIC(x) == ZMAGIC \ |
| ? TARGET_PAGE_SIZE \ |
| : 999)) |
| |
| #define N_TXTADDR(x) \ |
| (N_MAGIC(x) != ZMAGIC \ |
| ? (bfd_vma) 0 /* object file or NMAGIC */ \ |
| /* Programs with shared libs are loaded at the first page after all the \ |
| text segments of the shared library programs. Without looking this \ |
| up we can't know exactly what the address will be. A reasonable guess \ |
| is that a_entry will be in the first page of the executable. */ \ |
| : (N_SHARED_LIB(x) \ |
| ? ((x).a_entry & ~(bfd_vma) (TARGET_PAGE_SIZE - 1)) \ |
| : (bfd_vma) TEXT_START_ADDR)) |
| |
| #define N_SYMOFF(x) \ |
| (N_TXTOFF (x) + (x).a_text + (x).a_data + (x).a_trsize + (x).a_drsize) |
| |
| #define N_STROFF(x) (N_SYMOFF (x) + (x).a_syms) |
| |
| #define TEXT_START_ADDR 32768 |
| #define TARGET_PAGE_SIZE 32768 |
| #define SEGMENT_SIZE TARGET_PAGE_SIZE |
| #define DEFAULT_ARCH bfd_arch_arm |
| |
| /* 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 (riscix_,OP) |
| #define TARGETNAME "a.out-riscix" |
| #define N_BADMAG(x) ((((x).a_info & ~007200) != ZMAGIC) \ |
| && (((x).a_info & ~006000) != OMAGIC) \ |
| && ((x).a_info != NMAGIC)) |
| #define N_MAGIC(x) ((x).a_info & ~07200) |
| |
| #include "sysdep.h" |
| #include "bfd.h" |
| #include "libbfd.h" |
| |
| #define WRITE_HEADERS(abfd, execp) \ |
| { \ |
| bfd_size_type text_size; /* Dummy vars. */ \ |
| file_ptr text_end; \ |
| \ |
| if (adata (abfd).magic == undecided_magic) \ |
| NAME (aout, adjust_sizes_and_vmas) (abfd, & text_size, & text_end); \ |
| \ |
| execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \ |
| execp->a_entry = bfd_get_start_address (abfd); \ |
| \ |
| execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \ |
| obj_reloc_entry_size (abfd)); \ |
| execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \ |
| obj_reloc_entry_size (abfd)); \ |
| NAME (aout, swap_exec_header_out) (abfd, execp, & exec_bytes); \ |
| \ |
| if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 \ |
| || bfd_bwrite ((void *) & exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, \ |
| abfd) != EXEC_BYTES_SIZE) \ |
| return FALSE; \ |
| /* Now write out reloc info, followed by syms and strings. */ \ |
| \ |
| if (bfd_get_outsymbols (abfd) != NULL \ |
| && bfd_get_symcount (abfd) != 0) \ |
| { \ |
| if (bfd_seek (abfd, (file_ptr) (N_SYMOFF (* execp)), SEEK_SET) != 0)\ |
| return FALSE; \ |
| \ |
| if (! NAME (aout, write_syms) (abfd)) \ |
| return FALSE; \ |
| \ |
| if (bfd_seek (abfd, (file_ptr) (N_TRELOFF (* execp)), SEEK_SET) != 0)\ |
| return FALSE; \ |
| \ |
| if (! riscix_squirt_out_relocs (abfd, obj_textsec (abfd))) \ |
| return FALSE; \ |
| if (bfd_seek (abfd, (file_ptr) (N_DRELOFF (* execp)), SEEK_SET) != 0)\ |
| return FALSE; \ |
| \ |
| if (!NAME (aout, squirt_out_relocs) (abfd, obj_datasec (abfd))) \ |
| return FALSE; \ |
| } \ |
| } |
| |
| #include "libaout.h" |
| #include "aout/aout64.h" |
| |
| static bfd_reloc_status_type |
| riscix_fix_pcrel_26_done (bfd *abfd ATTRIBUTE_UNUSED, |
| arelent *reloc_entry ATTRIBUTE_UNUSED, |
| asymbol *symbol ATTRIBUTE_UNUSED, |
| void * data ATTRIBUTE_UNUSED, |
| asection *input_section ATTRIBUTE_UNUSED, |
| bfd *output_bfd ATTRIBUTE_UNUSED, |
| char **error_message ATTRIBUTE_UNUSED) |
| { |
| /* This is dead simple at present. */ |
| return bfd_reloc_ok; |
| } |
| |
| static bfd_reloc_status_type riscix_fix_pcrel_26 (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| static const bfd_target *riscix_callback (bfd *); |
| |
| static reloc_howto_type riscix_std_reloc_howto[] = |
| { |
| /* Type rs size bsz pcrel bitpos ovrf sf name part_inpl readmask setmask pcdone */ |
| HOWTO( 0, 0, 0, 8, FALSE, 0, complain_overflow_bitfield,0,"8", TRUE, 0x000000ff,0x000000ff, FALSE), |
| HOWTO( 1, 0, 1, 16, FALSE, 0, complain_overflow_bitfield,0,"16", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
| HOWTO( 2, 0, 2, 32, FALSE, 0, complain_overflow_bitfield,0,"32", TRUE, 0xffffffff,0xffffffff, FALSE), |
| HOWTO( 3, 2, 3, 26, TRUE, 0, complain_overflow_signed, riscix_fix_pcrel_26 , "ARM26", TRUE, 0x00ffffff,0x00ffffff, FALSE), |
| HOWTO( 4, 0, 0, 8, TRUE, 0, complain_overflow_signed, 0,"DISP8", TRUE, 0x000000ff,0x000000ff, TRUE), |
| HOWTO( 5, 0, 1, 16, TRUE, 0, complain_overflow_signed, 0,"DISP16", TRUE, 0x0000ffff,0x0000ffff, TRUE), |
| HOWTO( 6, 0, 2, 32, TRUE, 0, complain_overflow_signed, 0,"DISP32", TRUE, 0xffffffff,0xffffffff, TRUE), |
| HOWTO( 7, 2, 3, 26, FALSE, 0, complain_overflow_signed, riscix_fix_pcrel_26_done, "ARM26D",TRUE,0x00ffffff,0x00ffffff, FALSE), |
| EMPTY_HOWTO (-1), |
| HOWTO( 9, 0, -1, 16, FALSE, 0, complain_overflow_bitfield,0,"NEG16", TRUE, 0x0000ffff,0x0000ffff, FALSE), |
| HOWTO( 10, 0, -2, 32, FALSE, 0, complain_overflow_bitfield,0,"NEG32", TRUE, 0xffffffff,0xffffffff, FALSE) |
| }; |
| |
| #define RISCIX_TABLE_SIZE \ |
| (sizeof (riscix_std_reloc_howto) / sizeof (reloc_howto_type)) |
| |
| static bfd_reloc_status_type |
| riscix_fix_pcrel_26 (bfd *abfd, |
| arelent *reloc_entry, |
| asymbol *symbol, |
| void * data, |
| asection *input_section, |
| bfd *output_bfd, |
| char **error_message ATTRIBUTE_UNUSED) |
| { |
| bfd_vma relocation; |
| bfd_size_type addr = reloc_entry->address; |
| long target = bfd_get_32 (abfd, (bfd_byte *) data + addr); |
| bfd_reloc_status_type flag = bfd_reloc_ok; |
| |
| /* If this is an undefined symbol, return error. */ |
| if (bfd_is_und_section (symbol->section) |
| && (symbol->flags & BSF_WEAK) == 0) |
| return output_bfd ? bfd_reloc_continue : bfd_reloc_undefined; |
| |
| /* If the sections are different, and we are doing a partial relocation, |
| just ignore it for now. */ |
| if (symbol->section->name != input_section->name |
| && output_bfd != NULL) |
| return bfd_reloc_continue; |
| |
| relocation = (target & 0x00ffffff) << 2; |
| relocation = (relocation ^ 0x02000000) - 0x02000000; /* Sign extend. */ |
| relocation += symbol->value; |
| relocation += symbol->section->output_section->vma; |
| relocation += symbol->section->output_offset; |
| relocation += reloc_entry->addend; |
| relocation -= input_section->output_section->vma; |
| relocation -= input_section->output_offset; |
| relocation -= addr; |
| if (relocation & 3) |
| return bfd_reloc_overflow; |
| |
| /* Check for overflow. */ |
| if (relocation & 0x02000000) |
| { |
| if ((relocation & ~ (bfd_vma) 0x03ffffff) != ~ (bfd_vma) 0x03ffffff) |
| flag = bfd_reloc_overflow; |
| } |
| else if (relocation & ~ (bfd_vma) 0x03ffffff) |
| flag = bfd_reloc_overflow; |
| |
| target &= ~0x00ffffff; |
| target |= (relocation >> 2) & 0x00ffffff; |
| bfd_put_32 (abfd, (bfd_vma) target, (bfd_byte *) data + addr); |
| |
| /* Now the ARM magic... Change the reloc type so that it is marked as done. |
| Strictly this is only necessary if we are doing a partial relocation. */ |
| reloc_entry->howto = &riscix_std_reloc_howto[7]; |
| |
| return flag; |
| } |
| |
| static reloc_howto_type * |
| riscix_reloc_type_lookup (bfd *abfd, bfd_reloc_code_real_type code) |
| { |
| #define ASTD(i,j) case i: return &riscix_std_reloc_howto[j] |
| if (code == BFD_RELOC_CTOR) |
| switch (bfd_arch_bits_per_address (abfd)) |
| { |
| case 32: |
| code = BFD_RELOC_32; |
| break; |
| default: |
| return NULL; |
| } |
| |
| switch (code) |
| { |
| ASTD (BFD_RELOC_16, 1); |
| ASTD (BFD_RELOC_32, 2); |
| ASTD (BFD_RELOC_ARM_PCREL_BRANCH, 3); |
| ASTD (BFD_RELOC_8_PCREL, 4); |
| ASTD (BFD_RELOC_16_PCREL, 5); |
| ASTD (BFD_RELOC_32_PCREL, 6); |
| default: |
| return NULL; |
| } |
| } |
| |
| static reloc_howto_type * |
| riscix_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| const char *r_name) |
| { |
| unsigned int i; |
| |
| for (i = 0; |
| i < sizeof (riscix_std_reloc_howto) / sizeof (riscix_std_reloc_howto[0]); |
| i++) |
| if (riscix_std_reloc_howto[i].name != NULL |
| && strcasecmp (riscix_std_reloc_howto[i].name, r_name) == 0) |
| return &riscix_std_reloc_howto[i]; |
| |
| return NULL; |
| } |
| |
| #define MY_bfd_link_hash_table_create _bfd_generic_link_hash_table_create |
| #define MY_bfd_link_add_symbols _bfd_generic_link_add_symbols |
| #define MY_final_link_callback should_not_be_used |
| #define MY_bfd_final_link _bfd_generic_final_link |
| |
| #define MY_bfd_reloc_type_lookup riscix_reloc_type_lookup |
| #define MY_bfd_reloc_name_lookup riscix_reloc_name_lookup |
| #define MY_canonicalize_reloc riscix_canonicalize_reloc |
| #define MY_object_p riscix_object_p |
| |
| static void |
| riscix_swap_std_reloc_out (bfd *abfd, |
| arelent *g, |
| struct reloc_std_external *natptr) |
| { |
| int r_index; |
| asymbol *sym = *(g->sym_ptr_ptr); |
| int r_extern; |
| int r_length; |
| int r_pcrel; |
| int r_neg = 0; /* Negative relocs use the BASEREL bit. */ |
| asection *output_section = sym->section->output_section; |
| |
| PUT_WORD(abfd, g->address, natptr->r_address); |
| |
| r_length = g->howto->size ; /* Size as a power of two. */ |
| if (r_length < 0) |
| { |
| r_length = -r_length; |
| r_neg = 1; |
| } |
| |
| r_pcrel = (int) g->howto->pc_relative; /* Relative to PC? */ |
| |
| /* For RISC iX, in pc-relative relocs the r_pcrel bit means that the |
| relocation has been done already (Only for the 26-bit one I think)? */ |
| if (r_length == 3) |
| r_pcrel = r_pcrel ? 0 : 1; |
| |
| /* Name was clobbered by aout_write_syms to be symbol index. */ |
| |
| /* 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_com_section (output_section) |
| || bfd_is_abs_section (output_section) |
| || bfd_is_und_section (output_section)) |
| { |
| if (bfd_abs_section_ptr->symbol == sym) |
| { |
| /* Whoops, looked like an abs symbol, but is really an offset |
| from the abs section. */ |
| r_index = 0; |
| r_extern = 0; |
| } |
| else |
| { |
| /* Fill in symbol. */ |
| r_extern = 1; |
| r_index = (*g->sym_ptr_ptr)->udata.i; |
| } |
| } |
| else |
| { |
| /* Just an ordinary section. */ |
| r_extern = 0; |
| r_index = output_section->target_index; |
| } |
| |
| /* Now the fun stuff. */ |
| if (bfd_header_big_endian (abfd)) |
| { |
| natptr->r_index[0] = r_index >> 16; |
| natptr->r_index[1] = r_index >> 8; |
| natptr->r_index[2] = r_index; |
| natptr->r_type[0] = |
| ( (r_extern ? RELOC_STD_BITS_EXTERN_BIG: 0) |
| | (r_pcrel ? RELOC_STD_BITS_PCREL_BIG: 0) |
| | (r_neg ? RELOC_STD_BITS_BASEREL_BIG: 0) |
| | (r_length << RELOC_STD_BITS_LENGTH_SH_BIG)); |
| } |
| else |
| { |
| 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_STD_BITS_EXTERN_LITTLE: 0) |
| | (r_pcrel ? RELOC_STD_BITS_PCREL_LITTLE: 0) |
| | (r_neg ? RELOC_STD_BITS_BASEREL_LITTLE: 0) |
| | (r_length << RELOC_STD_BITS_LENGTH_SH_LITTLE)); |
| } |
| } |
| |
| static bfd_boolean |
| riscix_squirt_out_relocs (bfd *abfd, asection *section) |
| { |
| arelent **generic; |
| unsigned char *native, *natptr; |
| size_t each_size; |
| unsigned int count = section->reloc_count; |
| bfd_size_type natsize; |
| |
| if (count == 0) |
| return TRUE; |
| |
| each_size = obj_reloc_entry_size (abfd); |
| natsize = each_size; |
| natsize *= count; |
| native = bfd_zalloc (abfd, natsize); |
| if (!native) |
| return FALSE; |
| |
| generic = section->orelocation; |
| |
| for (natptr = native; |
| count != 0; |
| --count, natptr += each_size, ++generic) |
| riscix_swap_std_reloc_out (abfd, *generic, |
| (struct reloc_std_external *) natptr); |
| |
| if (bfd_bwrite ((void *) native, natsize, abfd) != natsize) |
| { |
| bfd_release (abfd, native); |
| return FALSE; |
| } |
| |
| bfd_release (abfd, native); |
| return TRUE; |
| } |
| |
| /* This is just like the standard aoutx.h version but we need to do our |
| own mapping of external reloc type values to howto entries. */ |
| |
| static long |
| MY (canonicalize_reloc) (bfd *abfd, |
| sec_ptr section, |
| arelent **relptr, |
| asymbol **symbols) |
| { |
| arelent *tblptr = section->relocation; |
| unsigned int count, c; |
| extern reloc_howto_type NAME (aout, std_howto_table)[]; |
| |
| /* If we have already read in the relocation table, return the values. */ |
| if (section->flags & SEC_CONSTRUCTOR) |
| { |
| arelent_chain *chain = section->constructor_chain; |
| |
| for (count = 0; count < section->reloc_count; count++) |
| { |
| *relptr++ = &chain->relent; |
| chain = chain->next; |
| } |
| *relptr = 0; |
| return section->reloc_count; |
| } |
| |
| if (tblptr && section->reloc_count) |
| { |
| for (count = 0; count++ < section->reloc_count;) |
| *relptr++ = tblptr++; |
| *relptr = 0; |
| return section->reloc_count; |
| } |
| |
| if (!NAME (aout, slurp_reloc_table) (abfd, section, symbols)) |
| return -1; |
| tblptr = section->relocation; |
| |
| /* Fix up howto entries. */ |
| for (count = 0; count++ < section->reloc_count;) |
| { |
| c = tblptr->howto - NAME(aout,std_howto_table); |
| BFD_ASSERT (c < RISCIX_TABLE_SIZE); |
| tblptr->howto = &riscix_std_reloc_howto[c]; |
| |
| *relptr++ = tblptr++; |
| } |
| *relptr = 0; |
| return section->reloc_count; |
| } |
| |
| /* This is the same as NAME(aout,some_aout_object_p), but has different |
| expansions of the macro definitions. */ |
| |
| static const bfd_target * |
| riscix_some_aout_object_p (bfd *abfd, |
| struct internal_exec *execp, |
| const bfd_target *(*callback_to_real_object_p) (bfd *)) |
| { |
| struct aout_data_struct *rawptr, *oldrawptr; |
| const bfd_target *result; |
| bfd_size_type amt = sizeof (struct aout_data_struct); |
| |
| rawptr = bfd_zalloc (abfd, amt); |
| |
| if (rawptr == NULL) |
| return NULL; |
| |
| oldrawptr = abfd->tdata.aout_data; |
| abfd->tdata.aout_data = rawptr; |
| |
| /* Copy the contents of the old tdata struct. |
| In particular, we want the subformat, since for hpux it was set in |
| hp300hpux.c:swap_exec_header_in and will be used in |
| hp300hpux.c:callback. */ |
| if (oldrawptr != NULL) |
| *abfd->tdata.aout_data = *oldrawptr; |
| |
| abfd->tdata.aout_data->a.hdr = &rawptr->e; |
| /* Copy in the internal_exec struct. */ |
| *(abfd->tdata.aout_data->a.hdr) = *execp; |
| execp = abfd->tdata.aout_data->a.hdr; |
| |
| /* Set the file flags. */ |
| abfd->flags = BFD_NO_FLAGS; |
| if (execp->a_drsize || execp->a_trsize) |
| abfd->flags |= HAS_RELOC; |
| /* Setting of EXEC_P has been deferred to the bottom of this function. */ |
| if (execp->a_syms) |
| abfd->flags |= HAS_LINENO | HAS_DEBUG | HAS_SYMS | HAS_LOCALS; |
| if (N_DYNAMIC(*execp)) |
| abfd->flags |= DYNAMIC; |
| |
| /* Squeezed files aren't supported (yet)! */ |
| if ((execp->a_info & MF_SQUEEZED) != 0) |
| { |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| else if ((execp->a_info & MF_IS_SL) != 0) |
| { |
| /* Nor are shared libraries. */ |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| else if (N_MAGIC (*execp) == ZMAGIC) |
| { |
| abfd->flags |= D_PAGED | WP_TEXT; |
| adata (abfd).magic = z_magic; |
| } |
| else if (N_MAGIC (*execp) == NMAGIC) |
| { |
| abfd->flags |= WP_TEXT; |
| adata (abfd).magic = n_magic; |
| } |
| else if (N_MAGIC (*execp) == OMAGIC) |
| adata (abfd).magic = o_magic; |
| else |
| /* Should have been checked with N_BADMAG before this routine |
| was called. */ |
| abort (); |
| |
| bfd_get_start_address (abfd) = execp->a_entry; |
| |
| obj_aout_symbols (abfd) = NULL; |
| bfd_get_symcount (abfd) = execp->a_syms / sizeof (struct external_nlist); |
| |
| /* The default relocation entry size is that of traditional V7 Unix. */ |
| obj_reloc_entry_size (abfd) = RELOC_STD_SIZE; |
| |
| /* The default symbol entry size is that of traditional Unix. */ |
| obj_symbol_entry_size (abfd) = EXTERNAL_NLIST_SIZE; |
| |
| obj_aout_external_syms (abfd) = NULL; |
| obj_aout_external_strings (abfd) = NULL; |
| obj_aout_sym_hashes (abfd) = NULL; |
| |
| if (! NAME (aout, make_sections) (abfd)) |
| return NULL; |
| |
| obj_datasec (abfd)->size = execp->a_data; |
| obj_bsssec (abfd)->size = execp->a_bss; |
| |
| obj_textsec (abfd)->flags = |
| (execp->a_trsize != 0 |
| ? (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS | SEC_RELOC) |
| : (SEC_ALLOC | SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS)); |
| obj_datasec (abfd)->flags = |
| (execp->a_drsize != 0 |
| ? (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS | SEC_RELOC) |
| : (SEC_ALLOC | SEC_LOAD | SEC_DATA | SEC_HAS_CONTENTS)); |
| obj_bsssec (abfd)->flags = SEC_ALLOC; |
| |
| result = (*callback_to_real_object_p) (abfd); |
| |
| #if defined(MACH) || defined(STAT_FOR_EXEC) |
| /* The original heuristic doesn't work in some important cases. The |
| a.out file has no information about the text start address. For |
| files (like kernels) linked to non-standard addresses (ld -Ttext |
| nnn) the entry point may not be between the default text start |
| (obj_textsec(abfd)->vma) and (obj_textsec(abfd)->vma) + text size |
| This is not just a mach issue. Many kernels are loaded at non |
| standard addresses. */ |
| { |
| struct stat stat_buf; |
| |
| if (abfd->iostream != NULL |
| && (abfd->flags & BFD_IN_MEMORY) == 0 |
| && (fstat(fileno((FILE *) (abfd->iostream)), &stat_buf) == 0) |
| && ((stat_buf.st_mode & 0111) != 0)) |
| abfd->flags |= EXEC_P; |
| } |
| #else /* ! MACH */ |
| /* Now that the segment addresses have been worked out, take a better |
| guess at whether the file is executable. If the entry point |
| is within the text segment, assume it is. (This makes files |
| executable even if their entry point address is 0, as long as |
| their text starts at zero.) |
| |
| At some point we should probably break down and stat the file and |
| declare it executable if (one of) its 'x' bits are on... */ |
| if ((execp->a_entry >= obj_textsec(abfd)->vma) && |
| (execp->a_entry < obj_textsec(abfd)->vma + obj_textsec(abfd)->size)) |
| abfd->flags |= EXEC_P; |
| #endif /* MACH */ |
| if (result == NULL) |
| { |
| free (rawptr); |
| abfd->tdata.aout_data = oldrawptr; |
| } |
| return result; |
| } |
| |
| static const bfd_target * |
| MY (object_p) (bfd *abfd) |
| { |
| struct external_exec exec_bytes; /* Raw exec header from file. */ |
| struct internal_exec exec; /* Cleaned-up exec header. */ |
| const bfd_target *target; |
| |
| if (bfd_bread ((void *) &exec_bytes, (bfd_size_type) EXEC_BYTES_SIZE, abfd) |
| != EXEC_BYTES_SIZE) |
| { |
| if (bfd_get_error () != bfd_error_system_call) |
| bfd_set_error (bfd_error_wrong_format); |
| return NULL; |
| } |
| |
| exec.a_info = H_GET_32 (abfd, exec_bytes.e_info); |
| |
| if (N_BADMAG (exec)) |
| return NULL; |
| |
| #ifdef MACHTYPE_OK |
| if (!(MACHTYPE_OK (N_MACHTYPE (exec)))) |
| return NULL; |
| #endif |
| |
| NAME (aout, swap_exec_header_in) (abfd, & exec_bytes, & exec); |
| |
| target = riscix_some_aout_object_p (abfd, & exec, MY (callback)); |
| |
| return target; |
| } |
| |
| #include "aout-target.h" |
