# This shell script emits a C file. -*- C -*- # Copyright 2001, 2002, 2003, 2004 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 mmo.em, used to define # linker MMIX-specifics common to ELF and MMO. cat >>e${EMULATION_NAME}.c <>e${EMULATION_NAME}.c <flags & (SEC_EXCLUDE | SEC_LOAD)) != SEC_LOAD) return FALSE; /* Only care for sections we're going to load. */ secname = s->name; os = lang_output_section_find (secname); /* We have an output section by this name. Place the section inside it (regardless of whether the linker script lists it as input). */ if (os != NULL) { lang_add_section (&os->children, s, os, file); return TRUE; } /* If this section does not have .text-type section flags or there's no MMO_TEXT_SECTION_NAME, we don't have anything to say. */ if ((s->flags & (SEC_CODE | SEC_READONLY)) == 0) return FALSE; if (hold_text.os == NULL) hold_text.os = lang_output_section_find (hold_text.name); place = &hold_text; if (hold_text.os != NULL) after = hold_text.os; else after = &lang_output_section_statement.head->output_section_statement; /* If there's an output section by this name, we'll use it, regardless of section flags, in contrast to what's done in elf32.em. */ os = lang_insert_orphan (file, s, secname, after, place, NULL, NULL); /* We need an output section for .text as a root, so if there was none (might happen with a peculiar linker script such as in "map addresses", map-address.exp), we grab the output section created above. */ if (hold_text.os == NULL) hold_text.os = os; return TRUE; } /* Remove the spurious settings of SEC_RELOC that make it to the output at link time. We are as confused as elflink.h:elf_bfd_final_link, and paper over the bug similarly. */ static void mmo_wipe_sec_reloc_flag (bfd *abfd, asection *sec, void *ptr ATTRIBUTE_UNUSED) { bfd_set_section_flags (abfd, sec, bfd_get_section_flags (abfd, sec) & ~SEC_RELOC); } /* Iterate with bfd_map_over_sections over mmo_wipe_sec_reloc_flag... */ static void mmo_finish (void) { bfd_map_over_sections (output_bfd, mmo_wipe_sec_reloc_flag, NULL); } /* To get on-demand global register allocation right, we need to parse the relocs, like what happens when linking to ELF. It needs to be done before all input sections are supposed to be present. When linking to ELF, it's done when reading symbols. When linking to mmo, we do it when all input files are seen, which is equivalent. */ static void mmo_after_open (void) { /* When there's a mismatch between the output format and the emulation (using weird combinations like "-m mmo --oformat elf64-mmix" for example), we'd count relocs twice because they'd also be counted along the usual route for ELF-only linking, which would lead to an internal accounting error. */ if (bfd_get_flavour (output_bfd) != bfd_target_elf_flavour) { LANG_FOR_EACH_INPUT_STATEMENT (is) { if (bfd_get_flavour (is->the_bfd) == bfd_target_elf_flavour && !_bfd_mmix_check_all_relocs (is->the_bfd, &link_info)) einfo ("%X%P: Internal problems scanning %B after opening it", is->the_bfd); } } } EOF LDEMUL_PLACE_ORPHAN=mmo_place_orphan LDEMUL_FINISH=mmo_finish LDEMUL_AFTER_OPEN=mmo_after_open