X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=ld%2Femultempl%2Favrelf.em;h=3c897cb8047c11d17064dea3bc51504eb797d834;hb=739b5c9c778dee9e2f54d864f83a81ecb0639535;hp=1f5ab5cf507fa7d14e97395c53418d67a57fdbc0;hpb=2a69000bfa0bee656a813120f1745c3baede0515;p=deliverable%2Fbinutils-gdb.git diff --git a/ld/emultempl/avrelf.em b/ld/emultempl/avrelf.em index 1f5ab5cf50..3c897cb804 100644 --- a/ld/emultempl/avrelf.em +++ b/ld/emultempl/avrelf.em @@ -1,12 +1,11 @@ # This shell script emits a C file. -*- C -*- -# Copyright 2006 -# Free Software Foundation, Inc. +# Copyright (C) 2006-2019 Free Software Foundation, Inc. # -# This file is part of GLD, the Gnu Linker. +# This file is part of the GNU Binutils. # # 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 +# 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, @@ -16,26 +15,28 @@ # # 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. +# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, +# MA 02110-1301, USA. -# This file is sourced from elf32.em, and defines extra avr-elf -# specific routines. It is used to generate the trampolines for the avr6 -# family devices where one needs to address the issue that it is not possible + +# This file is sourced from elf32.em, and defines extra avr-elf specific +# routines. It is used to generate the trampolines for the avr6 family +# of devices where one needs to address the issue that it is not possible # to reach the whole program memory by using 16 bit pointers. -cat >>e${EMULATION_NAME}.c <the_bfd, - avr_stub_section, - avr_no_stubs, - avr_debug_stubs, - avr_debug_relax, - avr_pc_wrap_around, - avr_replace_call_ret_sequences); + stub_file->the_bfd, + avr_stub_section, + avr_no_stubs, + avr_debug_stubs, + avr_debug_relax, + avr_pc_wrap_around, + avr_replace_call_ret_sequences); } @@ -70,31 +71,39 @@ avr_elf_${EMULATION_NAME}_before_allocation (void) gld${EMULATION_NAME}_before_allocation (); - /* We only need stubs for the avr6 family. */ - if (strcmp ("${EMULATION_NAME}","avr6")) + if (bfd_get_flavour (link_info.output_bfd) != bfd_target_elf_flavour) + { + avr_no_stubs = TRUE; + return; + } + + /* We only need stubs for avr6, avrxmega6, and avrxmega7. */ + if (strcmp ("${EMULATION_NAME}","avr6") + && strcmp ("${EMULATION_NAME}","avrxmega6") + && strcmp ("${EMULATION_NAME}","avrxmega7") ) avr_no_stubs = TRUE; avr_elf_set_global_bfd_parameters (); /* If generating a relocatable output file, then we don't have to generate the trampolines. */ - if (link_info.relocatable) + if (bfd_link_relocatable (&link_info)) avr_no_stubs = TRUE; if (avr_no_stubs) return; - ret = elf32_avr_setup_section_lists (output_bfd, &link_info); + ret = elf32_avr_setup_section_lists (link_info.output_bfd, &link_info); if (ret < 0) - einfo ("%X%P: can not setup the input section list: %E\n"); + einfo (_("%X%P: can not setup the input section list: %E\n")); if (ret <= 0) return; /* Call into the BFD backend to do the real "stub"-work. */ - if (! elf32_avr_size_stubs (output_bfd, &link_info, TRUE)) - einfo ("%X%P: can not size stub section: %E\n"); + if (! elf32_avr_size_stubs (link_info.output_bfd, &link_info, TRUE)) + einfo (_("%X%P: can not size stub section: %E\n")); } /* This is called before the input files are opened. We create a new @@ -105,139 +114,189 @@ avr_elf_create_output_section_statements (void) { flagword flags; + if (bfd_get_flavour (link_info.output_bfd) != bfd_target_elf_flavour) + { + einfo (_("%F%P: error: cannot change output format " + "whilst linking %s binaries\n"), "AVR"); + return; + } + stub_file = lang_add_input_file ("linker stubs", - lang_input_file_is_fake_enum, - NULL); + lang_input_file_is_fake_enum, + NULL); - stub_file->the_bfd = bfd_create ("linker stubs", output_bfd); + stub_file->the_bfd = bfd_create ("linker stubs", link_info.output_bfd); if (stub_file->the_bfd == NULL || !bfd_set_arch_mach (stub_file->the_bfd, - bfd_get_arch (output_bfd), - bfd_get_mach (output_bfd))) + bfd_get_arch (link_info.output_bfd), + bfd_get_mach (link_info.output_bfd))) { - einfo ("%X%P: can not create stub BFD %E\n"); + einfo (_("%X%P: can not create stub BFD: %E\n")); return; } /* Now we add the stub section. */ - avr_stub_section = bfd_make_section_anyway (stub_file->the_bfd, - ".trampolines"); - if (avr_stub_section == NULL) - goto err_ret; - flags = (SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_CODE - | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); - if (!bfd_set_section_flags (stub_file->the_bfd, avr_stub_section, flags)) + | SEC_HAS_CONTENTS | SEC_RELOC | SEC_IN_MEMORY | SEC_KEEP); + avr_stub_section = bfd_make_section_anyway_with_flags (stub_file->the_bfd, + ".trampolines", + flags); + if (avr_stub_section == NULL) goto err_ret; avr_stub_section->alignment_power = 1; - + ldlang_add_file (stub_file); return; - err_ret: - einfo ("%X%P: can not make stub section: %E\n"); - return; + err_ret: + einfo (_("%X%P: can not make stub section: %E\n")); + return; } /* Re-calculates the size of the stubs so that we won't waste space. */ static void -avr_elf_finish (void) -{ +avr_elf_after_allocation (void) +{ + if (!avr_no_stubs && ! RELAXATION_ENABLED) + { + /* If relaxing, elf32_avr_size_stubs will be called from + elf32_avr_relax_section. */ + if (!elf32_avr_size_stubs (link_info.output_bfd, &link_info, TRUE)) + einfo (_("%X%P: can not size stub section: %E\n")); + } + + gld${EMULATION_NAME}_after_allocation (); + + /* Now build the linker stubs. */ if (!avr_no_stubs) { - /* Now build the linker stubs. */ - if (stub_file->the_bfd->sections != NULL) - { - /* Call again the trampoline analyzer to initialize the trampoline - stubs with the correct symbol addresses. Since there could have - been relaxation, the symbol addresses that were found during - first call may no longer be correct. */ - if (!elf32_avr_size_stubs (output_bfd, &link_info, FALSE)) - { - einfo ("%X%P: can not size stub section: %E\n"); - return; - } - - if (!elf32_avr_build_stubs (&link_info)) - einfo ("%X%P: can not build stubs: %E\n"); - } + if (!elf32_avr_build_stubs (&link_info)) + einfo (_("%X%P: can not build stubs: %E\n")); } +} + +static void +avr_elf_before_parse (void) +{ + /* Don't create a demand-paged executable, since this feature isn't + meaningful in AVR. */ + config.magic_demand_paged = FALSE; - gld${EMULATION_NAME}_finish (); + gld${EMULATION_NAME}_before_parse (); } +static void +avr_finish (void) +{ + bfd *abfd; + bfd_boolean avr_link_relax; + + if (bfd_link_relocatable (&link_info)) + { + avr_link_relax = TRUE; + for (abfd = link_info.input_bfds; abfd != NULL; abfd = abfd->link.next) + { + /* Don't let the linker stubs prevent the final object being + marked as link-relax ready. */ + if ((elf_elfheader (abfd)->e_flags + & EF_AVR_LINKRELAX_PREPARED) == 0 + && abfd != stub_file->the_bfd) + { + avr_link_relax = FALSE; + break; + } + } + } + else + { + avr_link_relax = RELAXATION_ENABLED; + } + + abfd = link_info.output_bfd; + if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour) + { + if (avr_link_relax) + elf_elfheader (abfd)->e_flags |= EF_AVR_LINKRELAX_PREPARED; + else + elf_elfheader (abfd)->e_flags &= ~EF_AVR_LINKRELAX_PREPARED; + } + + finish_default (); +} EOF PARSE_AND_LIST_PROLOGUE=' #define OPTION_NO_CALL_RET_REPLACEMENT 301 -#define OPTION_PMEM_WRAP_AROUND 302 -#define OPTION_NO_STUBS 303 -#define OPTION_DEBUG_STUBS 304 -#define OPTION_DEBUG_RELAX 305 +#define OPTION_PMEM_WRAP_AROUND 302 +#define OPTION_NO_STUBS 303 +#define OPTION_DEBUG_STUBS 304 +#define OPTION_DEBUG_RELAX 305 ' PARSE_AND_LIST_LONGOPTS=' - { "no-call-ret-replacement", no_argument, - NULL, OPTION_NO_CALL_RET_REPLACEMENT}, - { "pmem-wrap-around", required_argument, + { "no-call-ret-replacement", no_argument, + NULL, OPTION_NO_CALL_RET_REPLACEMENT}, + { "pmem-wrap-around", required_argument, NULL, OPTION_PMEM_WRAP_AROUND}, - { "no-stubs", no_argument, + { "no-stubs", no_argument, NULL, OPTION_NO_STUBS}, - { "debug-stubs", no_argument, + { "debug-stubs", no_argument, NULL, OPTION_DEBUG_STUBS}, - { "debug-relax", no_argument, + { "debug-relax", no_argument, NULL, OPTION_DEBUG_RELAX}, ' PARSE_AND_LIST_OPTIONS=' - fprintf (file, _(" --pmem-wrap-around= " - "Make the linker relaxation machine assume that a\n" - " " - "program counter wrap-around occures at address\n" - " " - ". Supported values are 8k, 16k, 32k and 64k.\n")); - fprintf (file, _(" --no-call-ret-replacement " - "The relaxation machine normally will\n" - " " - "substitute two immediately following call/ret\n" - " " - "instructions by a single jump instruction.\n" - " " - "This option disables this optimization.\n")); - fprintf (file, _(" --no-stubs " - "If the linker detects to attempt to access\n" - " " - "an instruction beyond 128k by a reloc that\n" - " " - "is limited to 128k max, it inserts a jump\n" - " " - "stub. You can de-active this with this switch.\n")); - fprintf (file, _(" --debug-stubs Used for debugging avr-ld.\n")); - fprintf (file, _(" --debug-relax Used for debugging avr-ld.\n")); + fprintf (file, _(" --pmem-wrap-around= " + "Make the linker relaxation machine assume that a\n" + " " + " program counter wrap-around occurs at address\n" + " " + " . Supported values: 8k, 16k, 32k and 64k.\n")); + fprintf (file, _(" --no-call-ret-replacement " + "The relaxation machine normally will\n" + " " + " substitute two immediately following call/ret\n" + " " + " instructions by a single jump instruction.\n" + " " + " This option disables this optimization.\n")); + fprintf (file, _(" --no-stubs " + "If the linker detects to attempt to access\n" + " " + " an instruction beyond 128k by a reloc that\n" + " " + " is limited to 128k max, it inserts a jump\n" + " " + " stub. You can de-active this with this switch.\n")); + fprintf (file, _(" --debug-stubs " + "Used for debugging avr-ld.\n")); + fprintf (file, _(" --debug-relax " + "Used for debugging avr-ld.\n")); ' PARSE_AND_LIST_ARGS_CASES=' case OPTION_PMEM_WRAP_AROUND: - { - /* This variable is defined in the bfd library. */ - if ((!strcmp (optarg,"32k")) || (!strcmp (optarg,"32K"))) - avr_pc_wrap_around = 32768; - else if ((!strcmp (optarg,"8k")) || (!strcmp (optarg,"8K"))) - avr_pc_wrap_around = 8192; - else if ((!strcmp (optarg,"16k")) || (!strcmp (optarg,"16K"))) - avr_pc_wrap_around = 16384; - else if ((!strcmp (optarg,"64k")) || (!strcmp (optarg,"64K"))) - avr_pc_wrap_around = 0x10000; - else - return FALSE; + { + /* This variable is defined in the bfd library. */ + if ((!strcmp (optarg,"32k")) || (!strcmp (optarg,"32K"))) + avr_pc_wrap_around = 32768; + else if ((!strcmp (optarg,"8k")) || (!strcmp (optarg,"8K"))) + avr_pc_wrap_around = 8192; + else if ((!strcmp (optarg,"16k")) || (!strcmp (optarg,"16K"))) + avr_pc_wrap_around = 16384; + else if ((!strcmp (optarg,"64k")) || (!strcmp (optarg,"64K"))) + avr_pc_wrap_around = 0x10000; + else + return FALSE; } break; @@ -255,8 +314,8 @@ PARSE_AND_LIST_ARGS_CASES=' case OPTION_NO_CALL_RET_REPLACEMENT: { - /* This variable is defined in the bfd library. */ - avr_replace_call_ret_sequences = FALSE; + /* This variable is defined in the bfd library. */ + avr_replace_call_ret_sequences = FALSE; } break; ' @@ -264,6 +323,8 @@ PARSE_AND_LIST_ARGS_CASES=' # # Put these extra avr-elf routines in ld_${EMULATION_NAME}_emulation # +LDEMUL_BEFORE_PARSE=avr_elf_before_parse LDEMUL_BEFORE_ALLOCATION=avr_elf_${EMULATION_NAME}_before_allocation -LDEMUL_FINISH=avr_elf_finish +LDEMUL_AFTER_ALLOCATION=avr_elf_after_allocation LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=avr_elf_create_output_section_statements +LDEMUL_FINISH=avr_finish