diff options
Diffstat (limited to 'ld/mpw-idtmips.c')
-rw-r--r-- | ld/mpw-idtmips.c | 430 |
1 files changed, 430 insertions, 0 deletions
diff --git a/ld/mpw-idtmips.c b/ld/mpw-idtmips.c new file mode 100644 index 0000000..08ddc70 --- /dev/null +++ b/ld/mpw-idtmips.c @@ -0,0 +1,430 @@ +/* This file is is generated by a shell script. DO NOT EDIT! */ + +/* Handle embedded relocs for MIPS. + Copyright 1994 Free Software Foundation, Inc. + Written by Ian Lance Taylor <ian@cygnus.com> based on generic.em. + +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. */ + +#define TARGET_IS_mipsidt + +#include "libiberty.h" +#include "bfd.h" +#include "sysdep.h" +#include "bfdlink.h" + +#include "ld.h" +#include "ldmain.h" +#include "ldemul.h" +#include "ldfile.h" +#include "ldmisc.h" + +static void gldmipsidt_before_parse PARAMS ((void)); +static void gldmipsidt_after_open PARAMS ((void)); +static void check_sections PARAMS ((bfd *, asection *, PTR)); +static void gldmipsidt_after_allocation PARAMS ((void)); +static char *gldmipsidt_get_script PARAMS ((int *isfile)); + +static void +gldmipsidt_before_parse() +{ +#ifndef TARGET_ /* I.e., if not generic. */ + ldfile_output_architecture = bfd_arch_mips; +#endif /* not TARGET_ */ +} + +/* This function is run after all the input files have been opened. + We create a .rel.sdata section for each input file with a non zero + .sdata section. The BFD backend will fill in these sections with + magic numbers which can be used to relocate the data section at run + time. This will only do the right thing if all the input files + have been compiled using -membedded-pic. */ + +static void +gldmipsidt_after_open () +{ + bfd *abfd; + + if (! command_line.embedded_relocs + || link_info.relocateable) + return; + + for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) + { + asection *datasec; + + datasec = bfd_get_section_by_name (abfd, ".sdata"); + + /* Note that we assume that the reloc_count field has already + been set up. We could call bfd_get_reloc_upper_bound, but + that returns the size of a memory buffer rather than a reloc + count. We do not want to call bfd_canonicalize_reloc, + because although it would always work it would force us to + read in the relocs into BFD canonical form, which would waste + a significant amount of time and memory. */ + if (datasec != NULL && datasec->reloc_count > 0) + { + asection *relsec; + + relsec = bfd_make_section (abfd, ".rel.sdata"); + if (relsec == NULL + || ! bfd_set_section_flags (abfd, relsec, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY)) + || ! bfd_set_section_alignment (abfd, relsec, 2) + || ! bfd_set_section_size (abfd, relsec, + datasec->reloc_count * 4)) + einfo (_("%F%B: can not create .rel.sdata section: %E\n")); + } + + /* Double check that all other data sections are empty, as is + required for embedded PIC code. */ + bfd_map_over_sections (abfd, check_sections, (PTR) datasec); + } +} + +/* Check that of the data sections, only the .sdata section has + relocs. This is called via bfd_map_over_sections. */ + +static void +check_sections (abfd, sec, sdatasec) + bfd *abfd; + asection *sec; + PTR sdatasec; +{ + if ((bfd_get_section_flags (abfd, sec) & SEC_CODE) == 0 + && sec != (asection *) sdatasec + && sec->reloc_count != 0) + einfo (_("%F%X: section %s has relocs; can not use --embedded-relocs\n"), + abfd, bfd_get_section_name (abfd, sec)); +} + +/* This function is called after the section sizes and offsets have + been set. If we are generating embedded relocs, it calls a special + BFD backend routine to do the work. */ + +static void +gldmipsidt_after_allocation () +{ + bfd *abfd; + + if (! command_line.embedded_relocs + || link_info.relocateable) + return; + + for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link_next) + { + asection *datasec, *relsec; + char *errmsg; + + datasec = bfd_get_section_by_name (abfd, ".sdata"); + + if (datasec == NULL || datasec->reloc_count == 0) + continue; + + relsec = bfd_get_section_by_name (abfd, ".rel.sdata"); + ASSERT (relsec != NULL); + + if (! bfd_mips_ecoff_create_embedded_relocs (abfd, &link_info, + datasec, relsec, + &errmsg)) + { + if (errmsg == NULL) + einfo (_("%B%X: can not create runtime reloc information: %E\n"), + abfd); + else + einfo (_("%X%B: can not create runtime reloc information: %s\n"), + abfd, errmsg); + } + } +} + +static char * +gldmipsidt_get_script(isfile) + int *isfile; +{ + *isfile = 0; + + if (link_info.relocateable == true && config.build_constructors == true) + return +concat( +"OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ + \"ecoff-littlemips\")\n\ + SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ +ENTRY(start)\n\ +SECTIONS\n\ +{\n\ + .text : {\n\ + ;\n\ + *(.init)\n\ + ;\n\ + *(.text)\n\ + *(.rel.sdata)\n\ + *(.fini)\n\ + ;\n\ + ;\n\ + }\n\ + "," .rdata : {\n\ + *(.rdata)\n\ + }\n\ + .data : {\n\ + *(.data)\n\ + CONSTRUCTORS\n\ + }\n\ + .lit8 : {\n\ + *(.lit8)\n\ + }\n\ + .lit4 : {\n\ + *(.lit4)\n\ + }\n\ + "," .sdata : {\n\ + *(.sdata)\n\ + }\n\ + .sbss : {\n\ + *(.sbss)\n\ + *(.scommon)\n\ + }\n\ + .bss : {\n\ + *(.bss)\n\ + *(COMMON)\n\ + }\n\ +}\n\n", NULL) + ; else if (link_info.relocateable == true) return +"OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ + \"ecoff-littlemips\")\n\ + SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ +ENTRY(start)\n\ +SECTIONS\n\ +{\n\ + .text : {\n\ + ;\n\ + *(.init)\n\ + ;\n\ + *(.text)\n\ + *(.rel.sdata)\n\ + *(.fini)\n\ + ;\n\ + ;\n\ + }\n\ + .rdata : {\n\ + *(.rdata)\n\ + }\n\ + .data : {\n\ + *(.data)\n\ + }\n\ + .lit8 : {\n\ + *(.lit8)\n\ + }\n\ + .lit4 : {\n\ + *(.lit4)\n\ + }\n\ + .sdata : {\n\ + *(.sdata)\n\ + }\n\ + .sbss : {\n\ + *(.sbss)\n\ + *(.scommon)\n\ + }\n\ + .bss : {\n\ + *(.bss)\n\ + *(COMMON)\n\ + }\n\ +}\n\n" + ; else if (!config.text_read_only) return +concat( +"OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ + \"ecoff-littlemips\")\n\ + SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ +ENTRY(start)\n\ +SECTIONS\n\ +{\n\ + . = 0xa0012000;\n\ + .text : {\n\ + _ftext = . ;\n\ + *(.init)\n\ + eprol = .;\n\ + *(.text)\n\ + PROVIDE (__runtime_reloc_start = .);\n\ + *(.rel.sdata)\n\ + PROVIDE (__runtime_reloc_stop = .);\n\ + *(.fini)\n\ + etext = .;\n\ + _etext = .;\n\ +"," }\n\ + . = .;\n\ + .rdata : {\n\ + *(.rdata)\n\ + }\n\ + _fdata = ALIGN(16);\n\ + .data : {\n\ + *(.data)\n\ + CONSTRUCTORS\n\ + }\n\ + _gp = ALIGN(16) + 0x8000;\n\ + .lit8 : {\n\ + *(.lit8)\n\ + }\n\ + .lit4 : {\n\ + *(.lit4)\n\ + }\n\ + .sdata : {\n\ + *(.sdata)\n\ + }\n\ +"," edata = .;\n\ + _edata = .;\n\ + _fbss = .;\n\ + .sbss : {\n\ + *(.sbss)\n\ + *(.scommon)\n\ + }\n\ + .bss : {\n\ + *(.bss)\n\ + *(COMMON)\n\ + }\n\ + end = .;\n\ + _end = .;\n\ +}\n\n" +, NULL) + ; else if (!config.magic_demand_paged) return +concat ( +"OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ + \"ecoff-littlemips\")\n\ + SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ +ENTRY(start)\n\ +SECTIONS\n\ +{\n\ + . = 0xa0012000;\n\ + .text : {\n\ + _ftext = . ;\n\ + *(.init)\n\ + eprol = .;\n\ + *(.text)\n\ + PROVIDE (__runtime_reloc_start = .);\n\ + *(.rel.sdata)\n\ + PROVIDE (__runtime_reloc_stop = .);\n\ + *(.fini)\n\ + etext = .;\n\ + _etext = .;\n\ + "," }\n\ + . = .;\n\ + .rdata : {\n\ + *(.rdata)\n\ + }\n\ + _fdata = ALIGN(16);\n\ + .data : {\n\ + *(.data)\n\ + CONSTRUCTORS\n\ + }\n\ + _gp = ALIGN(16) + 0x8000;\n\ + .lit8 : {\n\ + *(.lit8)\n\ + "," }\n\ + .lit4 : {\n\ + *(.lit4)\n\ + }\n\ + .sdata : {\n\ + *(.sdata)\n\ + }\n\ + edata = .;\n\ + _edata = .;\n\ + _fbss = .;\n\ + .sbss : {\n\ + *(.sbss)\n\ + *(.scommon)\n\ + "," }\n\ + .bss : {\n\ + *(.bss)\n\ + *(COMMON)\n\ + }\n\ + end = .;\n\ + _end = .;\n\ +}\n\n" +, NULL) + ; else return +concat ( +"OUTPUT_FORMAT(\"ecoff-bigmips\", \"ecoff-bigmips\",\n\ + \"ecoff-littlemips\")\n\ + SEARCH_DIR(/usr/local/mips-idt-ecoff/lib);\n\ +ENTRY(start)\n\ +SECTIONS\n\ +{\n\ + . = 0xa0012000;\n\ + .text : {\n\ + _ftext = . ;\n\ + *(.init)\n\ + eprol = .;\n\ + *(.text)\n\ + PROVIDE (__runtime_reloc_start = .);\n\ + *(.rel.sdata)\n\ + PROVIDE (__runtime_reloc_stop = .);\n\ + *(.fini)\n\ + etext = .;\n\ + _etext = .;\n\ + "," }\n\ + . = .;\n\ + .rdata : {\n\ + *(.rdata)\n\ + }\n\ + _fdata = ALIGN(16);\n\ + .data : {\n\ + *(.data)\n\ + CONSTRUCTORS\n\ + }\n\ + _gp = ALIGN(16) + 0x8000;\n\ + .lit8 : {\n\ + *(.lit8)\n\ + }\n\ + .lit4 : {\n\ + *(.lit4)\n\ + "," }\n\ + .sdata : {\n\ + *(.sdata)\n\ + }\n\ + edata = .;\n\ + _edata = .;\n\ + _fbss = .;\n\ + .sbss : {\n\ + *(.sbss)\n\ + *(.scommon)\n\ + }\n\ + .bss : {\n\ + *(.bss)\n\ + *(COMMON)\n\ + }\n\ + end = .;\n\ + _end = .;\n\ +}\n\n" +, NULL) +; } + +struct ld_emulation_xfer_struct ld_mipsidt_emulation = +{ + gldmipsidt_before_parse, + syslib_default, + hll_default, + after_parse_default, + gldmipsidt_after_open, + gldmipsidt_after_allocation, + set_output_arch_default, + ldemul_default_target, + before_allocation_default, + gldmipsidt_get_script, + "mipsidt", + "ecoff-bigmips" +}; |