1*3d8817e4Smiod# This shell script emits a C file. -*- C -*- 2*3d8817e4Smiod# It does some substitutions. 3*3d8817e4Smiodif [ -z "$MACHINE" ]; then 4*3d8817e4Smiod OUTPUT_ARCH=${ARCH} 5*3d8817e4Smiodelse 6*3d8817e4Smiod OUTPUT_ARCH=${ARCH}:${MACHINE} 7*3d8817e4Smiodfi 8*3d8817e4Smiodcat >e${EMULATION_NAME}.c <<EOF 9*3d8817e4Smiod/* This file is is generated by a shell script. DO NOT EDIT! */ 10*3d8817e4Smiod 11*3d8817e4Smiod/* Linux a.out emulation code for ${EMULATION_NAME} 12*3d8817e4Smiod Copyright 1991, 1993, 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 13*3d8817e4Smiod 2003, 2004, 2005 Free Software Foundation, Inc. 14*3d8817e4Smiod Written by Steve Chamberlain <sac@cygnus.com> 15*3d8817e4Smiod Linux support by Eric Youngdale <ericy@cais.cais.com> 16*3d8817e4Smiod 17*3d8817e4SmiodThis file is part of GLD, the Gnu Linker. 18*3d8817e4Smiod 19*3d8817e4SmiodThis program is free software; you can redistribute it and/or modify 20*3d8817e4Smiodit under the terms of the GNU General Public License as published by 21*3d8817e4Smiodthe Free Software Foundation; either version 2 of the License, or 22*3d8817e4Smiod(at your option) any later version. 23*3d8817e4Smiod 24*3d8817e4SmiodThis program is distributed in the hope that it will be useful, 25*3d8817e4Smiodbut WITHOUT ANY WARRANTY; without even the implied warranty of 26*3d8817e4SmiodMERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 27*3d8817e4SmiodGNU General Public License for more details. 28*3d8817e4Smiod 29*3d8817e4SmiodYou should have received a copy of the GNU General Public License 30*3d8817e4Smiodalong with this program; if not, write to the Free Software 31*3d8817e4SmiodFoundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */ 32*3d8817e4Smiod 33*3d8817e4Smiod#define TARGET_IS_${EMULATION_NAME} 34*3d8817e4Smiod 35*3d8817e4Smiod#include "bfd.h" 36*3d8817e4Smiod#include "sysdep.h" 37*3d8817e4Smiod#include "bfdlink.h" 38*3d8817e4Smiod 39*3d8817e4Smiod#include "ld.h" 40*3d8817e4Smiod#include "ldmain.h" 41*3d8817e4Smiod#include "ldmisc.h" 42*3d8817e4Smiod#include "ldexp.h" 43*3d8817e4Smiod#include "ldlang.h" 44*3d8817e4Smiod#include "ldfile.h" 45*3d8817e4Smiod#include "ldemul.h" 46*3d8817e4Smiod 47*3d8817e4Smiodstatic void 48*3d8817e4Smiodgld${EMULATION_NAME}_before_parse (void) 49*3d8817e4Smiod{ 50*3d8817e4Smiod ldfile_set_output_arch ("${OUTPUT_ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`); 51*3d8817e4Smiod config.dynamic_link = TRUE; 52*3d8817e4Smiod config.has_shared = TRUE; 53*3d8817e4Smiod} 54*3d8817e4Smiod 55*3d8817e4Smiod/* Try to open a dynamic archive. This is where we know that Linux 56*3d8817e4Smiod dynamic libraries have an extension of .sa. */ 57*3d8817e4Smiod 58*3d8817e4Smiodstatic bfd_boolean 59*3d8817e4Smiodgld${EMULATION_NAME}_open_dynamic_archive 60*3d8817e4Smiod (const char *arch, search_dirs_type *search, lang_input_statement_type *entry) 61*3d8817e4Smiod{ 62*3d8817e4Smiod char *string; 63*3d8817e4Smiod 64*3d8817e4Smiod if (! entry->is_archive) 65*3d8817e4Smiod return FALSE; 66*3d8817e4Smiod 67*3d8817e4Smiod string = (char *) xmalloc (strlen (search->name) 68*3d8817e4Smiod + strlen (entry->filename) 69*3d8817e4Smiod + strlen (arch) 70*3d8817e4Smiod + sizeof "/lib.sa"); 71*3d8817e4Smiod 72*3d8817e4Smiod sprintf (string, "%s/lib%s%s.sa", search->name, entry->filename, arch); 73*3d8817e4Smiod 74*3d8817e4Smiod if (! ldfile_try_open_bfd (string, entry)) 75*3d8817e4Smiod { 76*3d8817e4Smiod free (string); 77*3d8817e4Smiod return FALSE; 78*3d8817e4Smiod } 79*3d8817e4Smiod 80*3d8817e4Smiod entry->filename = string; 81*3d8817e4Smiod 82*3d8817e4Smiod return TRUE; 83*3d8817e4Smiod} 84*3d8817e4Smiod 85*3d8817e4Smiod/* This is called by the create_output_section_statements routine via 86*3d8817e4Smiod lang_for_each_statement. It locates any address assignment to 87*3d8817e4Smiod .text, and modifies it to include the size of the headers. This 88*3d8817e4Smiod causes -Ttext to mean the starting address of the header, rather 89*3d8817e4Smiod than the starting address of .text, which is compatible with other 90*3d8817e4Smiod Linux tools. */ 91*3d8817e4Smiod 92*3d8817e4Smiodstatic void 93*3d8817e4Smiodgld${EMULATION_NAME}_find_address_statement (lang_statement_union_type *s) 94*3d8817e4Smiod{ 95*3d8817e4Smiod if (s->header.type == lang_address_statement_enum 96*3d8817e4Smiod && strcmp (s->address_statement.section_name, ".text") == 0) 97*3d8817e4Smiod { 98*3d8817e4Smiod ASSERT (s->address_statement.address->type.node_class == etree_value); 99*3d8817e4Smiod s->address_statement.address->value.value += 0x20; 100*3d8817e4Smiod } 101*3d8817e4Smiod} 102*3d8817e4Smiod 103*3d8817e4Smiod/* This is called before opening the input BFD's. */ 104*3d8817e4Smiod 105*3d8817e4Smiodstatic void 106*3d8817e4Smiodgld${EMULATION_NAME}_create_output_section_statements (void) 107*3d8817e4Smiod{ 108*3d8817e4Smiod lang_for_each_statement (gld${EMULATION_NAME}_find_address_statement); 109*3d8817e4Smiod} 110*3d8817e4Smiod 111*3d8817e4Smiod/* This is called after the sections have been attached to output 112*3d8817e4Smiod sections, but before any sizes or addresses have been set. */ 113*3d8817e4Smiod 114*3d8817e4Smiodstatic void 115*3d8817e4Smiodgld${EMULATION_NAME}_before_allocation (void) 116*3d8817e4Smiod{ 117*3d8817e4Smiod if (link_info.relocatable) 118*3d8817e4Smiod return; 119*3d8817e4Smiod 120*3d8817e4Smiod /* Let the backend work out the sizes of any sections required by 121*3d8817e4Smiod dynamic linking. */ 122*3d8817e4Smiod if (! bfd_${EMULATION_NAME}_size_dynamic_sections (output_bfd, &link_info)) 123*3d8817e4Smiod einfo ("%P%F: failed to set dynamic section sizes: %E\n"); 124*3d8817e4Smiod 125*3d8817e4Smiod before_allocation_default (); 126*3d8817e4Smiod} 127*3d8817e4Smiod 128*3d8817e4Smiodstatic char * 129*3d8817e4Smiodgld${EMULATION_NAME}_get_script (int *isfile) 130*3d8817e4SmiodEOF 131*3d8817e4Smiod 132*3d8817e4Smiodif test -n "$COMPILE_IN" 133*3d8817e4Smiodthen 134*3d8817e4Smiod# Scripts compiled in. 135*3d8817e4Smiod 136*3d8817e4Smiod# sed commands to quote an ld script as a C string. 137*3d8817e4Smiodsc="-f stringify.sed" 138*3d8817e4Smiod 139*3d8817e4Smiodcat >>e${EMULATION_NAME}.c <<EOF 140*3d8817e4Smiod{ 141*3d8817e4Smiod *isfile = 0; 142*3d8817e4Smiod 143*3d8817e4Smiod if (link_info.relocatable && config.build_constructors) 144*3d8817e4Smiod return 145*3d8817e4SmiodEOF 146*3d8817e4Smiodsed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c 147*3d8817e4Smiodecho ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c 148*3d8817e4Smiodsed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c 149*3d8817e4Smiodecho ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c 150*3d8817e4Smiodsed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c 151*3d8817e4Smiodecho ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c 152*3d8817e4Smiodsed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c 153*3d8817e4Smiodecho ' ; else return' >> e${EMULATION_NAME}.c 154*3d8817e4Smiodsed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c 155*3d8817e4Smiodecho '; }' >> e${EMULATION_NAME}.c 156*3d8817e4Smiod 157*3d8817e4Smiodelse 158*3d8817e4Smiod# Scripts read from the filesystem. 159*3d8817e4Smiod 160*3d8817e4Smiodcat >>e${EMULATION_NAME}.c <<EOF 161*3d8817e4Smiod{ 162*3d8817e4Smiod *isfile = 1; 163*3d8817e4Smiod 164*3d8817e4Smiod if (link_info.relocatable && config.build_constructors) 165*3d8817e4Smiod return "ldscripts/${EMULATION_NAME}.xu"; 166*3d8817e4Smiod else if (link_info.relocatable) 167*3d8817e4Smiod return "ldscripts/${EMULATION_NAME}.xr"; 168*3d8817e4Smiod else if (!config.text_read_only) 169*3d8817e4Smiod return "ldscripts/${EMULATION_NAME}.xbn"; 170*3d8817e4Smiod else if (!config.magic_demand_paged) 171*3d8817e4Smiod return "ldscripts/${EMULATION_NAME}.xn"; 172*3d8817e4Smiod else 173*3d8817e4Smiod return "ldscripts/${EMULATION_NAME}.x"; 174*3d8817e4Smiod} 175*3d8817e4SmiodEOF 176*3d8817e4Smiod 177*3d8817e4Smiodfi 178*3d8817e4Smiod 179*3d8817e4Smiodcat >>e${EMULATION_NAME}.c <<EOF 180*3d8817e4Smiod 181*3d8817e4Smiodstruct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation = 182*3d8817e4Smiod{ 183*3d8817e4Smiod gld${EMULATION_NAME}_before_parse, 184*3d8817e4Smiod syslib_default, 185*3d8817e4Smiod hll_default, 186*3d8817e4Smiod after_parse_default, 187*3d8817e4Smiod after_open_default, 188*3d8817e4Smiod after_allocation_default, 189*3d8817e4Smiod set_output_arch_default, 190*3d8817e4Smiod ldemul_default_target, 191*3d8817e4Smiod gld${EMULATION_NAME}_before_allocation, 192*3d8817e4Smiod gld${EMULATION_NAME}_get_script, 193*3d8817e4Smiod "${EMULATION_NAME}", 194*3d8817e4Smiod "${OUTPUT_FORMAT}", 195*3d8817e4Smiod finish_default, 196*3d8817e4Smiod gld${EMULATION_NAME}_create_output_section_statements, 197*3d8817e4Smiod gld${EMULATION_NAME}_open_dynamic_archive, 198*3d8817e4Smiod NULL, /* place orphan */ 199*3d8817e4Smiod NULL, /* set symbols */ 200*3d8817e4Smiod NULL, /* parse args */ 201*3d8817e4Smiod NULL, /* add_options */ 202*3d8817e4Smiod NULL, /* handle_option */ 203*3d8817e4Smiod NULL, /* unrecognized file */ 204*3d8817e4Smiod NULL, /* list options */ 205*3d8817e4Smiod NULL, /* recognized file */ 206*3d8817e4Smiod NULL, /* find_potential_libraries */ 207*3d8817e4Smiod NULL /* new_vers_pattern */ 208*3d8817e4Smiod}; 209*3d8817e4SmiodEOF 210