diff options
Diffstat (limited to 'ld/emultempl/hppaelf.em')
| -rw-r--r-- | ld/emultempl/hppaelf.em | 443 |
1 files changed, 45 insertions, 398 deletions
diff --git a/ld/emultempl/hppaelf.em b/ld/emultempl/hppaelf.em index dfa1d0a..3139785 100644 --- a/ld/emultempl/hppaelf.em +++ b/ld/emultempl/hppaelf.em @@ -1,73 +1,50 @@ # This shell script emits a C file. -*- C -*- -# It does some substitutions. -cat >e${EMULATION_NAME}.c <<EOF -/* This file is is generated by a shell script. DO NOT EDIT! */ - -/* An emulation for HP PA-RISC ELF linkers. - Copyright (C) 1991, 93, 94, 95, 97, 99, 2000 - Free Software Foundation, Inc. - Written by Steve Chamberlain steve@cygnus.com - -This file is part of GLD, the Gnu Linker. - -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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ - -#include "bfd.h" -#include "sysdep.h" -#include <ctype.h> -#include "bfdlink.h" - -#include "ld.h" -#include "ldmain.h" -#include "ldmisc.h" -#include "ldexp.h" -#include "ldlang.h" -#include "ldfile.h" -#include "ldemul.h" -#include "ldgram.h" +# Copyright (C) 1991, 93, 94, 95, 97, 99, 2000 +# Free Software Foundation, Inc. +# +# This file is part of GLD, the Gnu Linker. +# +# 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 2 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. +# + +# This file is sourced from elf32.em, and defines extra hppa-elf +# specific routines. +# +cat >>e${EMULATION_NAME}.c <<EOF + #include "ldctor.h" #include "elf32-hppa.h" -static void hppaelf_before_parse PARAMS ((void)); static void hppaelf_set_output_arch PARAMS ((void)); static void hppaelf_create_output_section_statements PARAMS ((void)); static void hppaelf_delete_padding_statements - PARAMS ((lang_statement_list_type *list)); + PARAMS ((lang_statement_list_type *)); +static asection *hppaelf_add_stub_section + PARAMS ((const char *, asection *)); +static void hppaelf_layaout_sections_again PARAMS ((void)); static void hppaelf_finish PARAMS ((void)); -static boolean gld${EMULATION_NAME}_place_orphan - PARAMS ((lang_input_statement_type *, asection *)); -static lang_output_section_statement_type *output_rel_find PARAMS ((void)); -static char *hppaelf_get_script PARAMS ((int *)); /* Fake input file for stubs. */ static lang_input_statement_type *stub_file; -/* Perform some emulation specific initialization. For PA ELF we set - up the local label prefix and the output architecture. */ - -static void -hppaelf_before_parse () -{ - ldfile_output_architecture = bfd_arch_hppa; -} /* Set the output architecture and machine. */ static void -hppaelf_set_output_arch() +hppaelf_set_output_arch () { unsigned long machine = 0; @@ -162,6 +139,9 @@ struct hook_stub_info /* Traverse the linker tree to find the spot where the stub goes. */ +static boolean hook_in_stub + PARAMS ((struct hook_stub_info *, lang_statement_union_type **)); + static boolean hook_in_stub (info, lp) struct hook_stub_info *info; @@ -230,6 +210,7 @@ hook_in_stub (info, lp) return false; } + /* Call-back for elf32_hppa_size_stubs. */ /* Create a new stub section, and arrange for it to be linked @@ -275,6 +256,7 @@ hppaelf_add_stub_section (stub_name, input_section) return NULL; } + /* Another call-back for elf32_hppa_size_stubs. */ static void @@ -312,10 +294,10 @@ hppaelf_finish () return; /* Call into the BFD backend to do the real work. */ - if (elf32_hppa_size_stubs (stub_file->the_bfd, - &link_info, - &hppaelf_add_stub_section, - &hppaelf_layaout_sections_again) == false) + if (! elf32_hppa_size_stubs (stub_file->the_bfd, + &link_info, + &hppaelf_add_stub_section, + &hppaelf_layaout_sections_again)) { einfo ("%X%P: can not size stub section: %E\n"); return; @@ -324,350 +306,15 @@ hppaelf_finish () /* Now build the linker stubs. */ if (stub_file->the_bfd->sections != NULL) { - if (elf32_hppa_build_stubs (stub_file->the_bfd, &link_info) == false) + if (! elf32_hppa_build_stubs (stub_file->the_bfd, &link_info)) einfo ("%X%P: can not build stubs: %E\n"); } } - -/* Place an orphan section. We use this to put random SHF_ALLOC - sections in the right segment. */ - -struct orphan_save -{ - lang_output_section_statement_type *os; - asection **section; - lang_statement_union_type **stmt; -}; - -/*ARGSUSED*/ -static boolean -gld${EMULATION_NAME}_place_orphan (file, s) - lang_input_statement_type *file; - asection *s; -{ - static struct orphan_save hold_text; - static struct orphan_save hold_rodata; - static struct orphan_save hold_data; - static struct orphan_save hold_bss; - static struct orphan_save hold_rel; - static struct orphan_save hold_interp; - struct orphan_save *place; - lang_statement_list_type *old; - lang_statement_list_type add; - etree_type *address; - const char *secname, *ps; - const char *outsecname; - lang_output_section_statement_type *os; - - secname = bfd_get_section_name (s->owner, s); - - /* Look through the script to see where to place this section. */ - os = lang_output_section_find (secname); - - if (os != NULL - && os->bfd_section != NULL - && ((s->flags ^ os->bfd_section->flags) & (SEC_LOAD | SEC_ALLOC)) == 0) - { - /* We have already placed a section with this name. */ - wild_doit (&os->children, s, os, file); - return true; - } - - if (hold_text.os == NULL) - hold_text.os = lang_output_section_find (".text"); - - /* If this is a final link, then always put .gnu.warning.SYMBOL - sections into the .text section to get them out of the way. */ - if (! link_info.shared - && ! link_info.relocateable - && strncmp (secname, ".gnu.warning.", sizeof ".gnu.warning." - 1) == 0 - && hold_text.os != NULL) - { - wild_doit (&hold_text.os->children, s, hold_text.os, file); - return true; - } - - /* Decide which segment the section should go in based on the - section name and section flags. We put loadable .note sections - right after the .interp section, so that the PT_NOTE segment is - stored right after the program headers where the OS can read it - in the first page. */ -#define HAVE_SECTION(hold, name) \ -(hold.os != NULL || (hold.os = lang_output_section_find (name)) != NULL) - - if (s->flags & SEC_EXCLUDE) - return false; - else if ((s->flags & SEC_ALLOC) == 0) - place = NULL; - else if ((s->flags & SEC_LOAD) != 0 - && strncmp (secname, ".note", 4) == 0 - && HAVE_SECTION (hold_interp, ".interp")) - place = &hold_interp; - else if ((s->flags & SEC_HAS_CONTENTS) == 0 - && HAVE_SECTION (hold_bss, ".bss")) - place = &hold_bss; - else if ((s->flags & SEC_READONLY) == 0 - && HAVE_SECTION (hold_data, ".data")) - place = &hold_data; - else if (strncmp (secname, ".rel", 4) == 0 - && (hold_rel.os != NULL - || (hold_rel.os = output_rel_find ()) != NULL)) - place = &hold_rel; - else if ((s->flags & SEC_CODE) == 0 - && (s->flags & SEC_READONLY) != 0 - && HAVE_SECTION (hold_rodata, ".rodata")) - place = &hold_rodata; - else if ((s->flags & SEC_READONLY) != 0 - && hold_text.os != NULL) - place = &hold_text; - else - place = NULL; - -#undef HAVE_SECTION - - /* Choose a unique name for the section. This will be needed if the - same section name appears in the input file with different - loadable or allocateable characteristics. */ - outsecname = secname; - if (bfd_get_section_by_name (output_bfd, outsecname) != NULL) - { - unsigned int len; - char *newname; - unsigned int i; - - len = strlen (outsecname); - newname = xmalloc (len + 5); - strcpy (newname, outsecname); - i = 0; - do - { - sprintf (newname + len, "%d", i); - ++i; - } - while (bfd_get_section_by_name (output_bfd, newname) != NULL); - - outsecname = newname; - } - - if (place != NULL) - { - /* Start building a list of statements for this section. */ - old = stat_ptr; - stat_ptr = &add; - lang_list_init (stat_ptr); - - /* If the name of the section is representable in C, then create - symbols to mark the start and the end of the section. */ - for (ps = outsecname; *ps != '\0'; ps++) - if (! isalnum ((unsigned char) *ps) && *ps != '_') - break; - if (*ps == '\0' && config.build_constructors) - { - char *symname; - etree_type *e_align; - - symname = (char *) xmalloc (ps - outsecname + sizeof "__start_"); - sprintf (symname, "__start_%s", outsecname); - e_align = exp_unop (ALIGN_K, - exp_intop ((bfd_vma) 1 << s->alignment_power)); - lang_add_assignment (exp_assop ('=', symname, e_align)); - } - } - - if (link_info.relocateable || (s->flags & (SEC_LOAD | SEC_ALLOC)) == 0) - address = exp_intop ((bfd_vma) 0); - else - address = NULL; - - os = lang_enter_output_section_statement (outsecname, address, 0, - (bfd_vma) 0, - (etree_type *) NULL, - (etree_type *) NULL, - (etree_type *) NULL); - - wild_doit (&os->children, s, os, file); - - lang_leave_output_section_statement - ((bfd_vma) 0, "*default*", - (struct lang_output_section_phdr_list *) NULL, "*default*"); - - if (place != NULL) - { - asection *snew, **pps; - - stat_ptr = &add; - - if (*ps == '\0' && config.build_constructors) - { - char *symname; - - symname = (char *) xmalloc (ps - outsecname + sizeof "__stop_"); - sprintf (symname, "__stop_%s", outsecname); - lang_add_assignment (exp_assop ('=', symname, - exp_nameop (NAME, "."))); - } - stat_ptr = old; - - snew = os->bfd_section; - if (place->os->bfd_section != NULL || place->section != NULL) - { - /* Shuffle the section to make the output file look neater. */ - if (place->section == NULL) - { -#if 0 - /* Finding the end of the list is a little tricky. We - make a wild stab at it by comparing section flags. */ - flagword first_flags = place->os->bfd_section->flags; - for (pps = &place->os->bfd_section->next; - *pps != NULL && (*pps)->flags == first_flags; - pps = &(*pps)->next) - ; - place->section = pps; -#else - /* Put orphans after the first section on the list. */ - place->section = &place->os->bfd_section->next; -#endif - } - - /* Unlink the section. */ - for (pps = &output_bfd->sections; *pps != snew; pps = &(*pps)->next) - ; - *pps = snew->next; - - /* Now tack it on to the "place->os" section list. */ - snew->next = *place->section; - *place->section = snew; - } - place->section = &snew->next; /* Save the end of this list. */ - - if (place->stmt == NULL) - { - /* Put the new statement list right at the head. */ - *add.tail = place->os->header.next; - place->os->header.next = add.head; - } - else - { - /* Put it after the last orphan statement we added. */ - *add.tail = *place->stmt; - *place->stmt = add.head; - } - place->stmt = add.tail; /* Save the end of this list. */ - } - - return true; -} - -/* A variant of lang_output_section_find. */ -static lang_output_section_statement_type * -output_rel_find () -{ - lang_statement_union_type *u; - lang_output_section_statement_type *lookup; - - for (u = lang_output_section_statement.head; - u != (lang_statement_union_type *) NULL; - u = lookup->next) - { - lookup = &u->output_section_statement; - if (strncmp (".rel", lookup->name, 4) == 0 - && lookup->bfd_section != NULL - && (lookup->bfd_section->flags & SEC_ALLOC) != 0) - { - return lookup; - } - } - return (lang_output_section_statement_type *) NULL; -} - -/* The script itself gets inserted here. */ - -static char * -hppaelf_get_script(isfile) - int *isfile; EOF -if test -n "$COMPILE_IN" -then -# Scripts compiled in. - -# sed commands to quote an ld script as a C string. -sc="-f stringify.sed" - -cat >>e${EMULATION_NAME}.c <<EOF -{ - *isfile = 0; - - if (link_info.relocateable == true && config.build_constructors == true) - return -EOF -sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c -echo ' ; else if (link_info.relocateable == true) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c -echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c -echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c - -if test -n "$GENERATE_SHLIB_SCRIPT" ; then -echo ' ; else if (link_info.shared) return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.xs >> e${EMULATION_NAME}.c -fi - -echo ' ; else return' >> e${EMULATION_NAME}.c -sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c -echo '; }' >> e${EMULATION_NAME}.c - -else -# Scripts read from the filesystem. - -cat >>e${EMULATION_NAME}.c <<EOF -{ - *isfile = 1; - - if (link_info.relocateable == true && config.build_constructors == true) - return "ldscripts/${EMULATION_NAME}.xu"; - else if (link_info.relocateable == true) - return "ldscripts/${EMULATION_NAME}.xr"; - else if (!config.text_read_only) - return "ldscripts/${EMULATION_NAME}.xbn"; - else if (!config.magic_demand_paged) - return "ldscripts/${EMULATION_NAME}.xn"; - else if (link_info.shared) - return "ldscripts/${EMULATION_NAME}.xs"; - else - return "ldscripts/${EMULATION_NAME}.x"; -} -EOF - -fi - -cat >>e${EMULATION_NAME}.c <<EOF - -struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = -{ - hppaelf_before_parse, - syslib_default, - hll_default, - after_parse_default, - after_open_default, - after_allocation_default, - hppaelf_set_output_arch, - ldemul_default_target, - before_allocation_default, - hppaelf_get_script, - "${EMULATION_NAME}", - "elf32-hppa", - hppaelf_finish, - hppaelf_create_output_section_statements, - NULL, /* open dynamic */ - gld${EMULATION_NAME}_place_orphan, - NULL, /* set_symbols */ - NULL, /* parse_args */ - NULL, /* unrecognized_file */ - NULL, /* list_options */ - NULL, /* recognized_file */ - NULL /* find_potential_libraries */ -}; -EOF +# Put these routines in ld_${EMULATION_NAME}_emulation +# +LDEMUL_SET_OUTPUT_ARCH=hppaelf_set_output_arch +LDEMUL_FINISH=hppaelf_finish +LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=hppaelf_create_output_section_statements |