# This shell script emits a C file. -*- C -*-
-# Copyright 2006, 2007
-# Free Software Foundation, Inc.
+# Copyright (C) 2006-2016 Free Software Foundation, Inc.
#
# This file is part of the GNU Binutils.
#
# 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${EMULATION_NAME}.c <<EOF
+fragment <<EOF
#include "elf32-avr.h"
#include "ldctor.h"
+#include "elf/avr.h"
-/* The fake file and it's corresponding section meant to hold
+/* The fake file and it's corresponding section meant to hold
the linker stubs if needed. */
static lang_input_statement_type *stub_file;
gld${EMULATION_NAME}_before_allocation ();
- /* We only need stubs for the avr6 family. */
- if (strcmp ("${EMULATION_NAME}","avr6"))
+ /* We only need stubs for avr6, avrxmega6, and avrxmega7. */
+ if (strcmp ("${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");
return;
/* Call into the BFD backend to do the real "stub"-work. */
- if (! elf32_avr_size_stubs (output_bfd, &link_info, TRUE))
+ if (! elf32_avr_size_stubs (link_info.output_bfd, &link_info, TRUE))
einfo ("%X%P: can not size stub section: %E\n");
}
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");
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))
+ 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;
/* 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${EMULATION_NAME}_after_allocation ();
+
+ /* Now build the linker stubs. */
if (!avr_no_stubs)
{
- /* Now build the linker stubs. */
- if (stub_file->the_bfd->sections != NULL)
- {
- /* Call again the trampoline analyzer to initialize the trampoline
- stubs with the correct symbol addresses. Since there could have
- been relaxation, the symbol addresses that were found during
- first call may no longer be correct. */
- if (!elf32_avr_size_stubs (output_bfd, &link_info, FALSE))
- {
- einfo ("%X%P: can not size stub section: %E\n");
- return;
- }
-
- if (!elf32_avr_build_stubs (&link_info))
- einfo ("%X%P: can not build stubs: %E\n");
- }
+ if (!elf32_avr_build_stubs (&link_info))
+ einfo ("%X%P: can not build stubs: %E\n");
}
+}
- gld${EMULATION_NAME}_finish ();
+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}_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 (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_LONGOPTS='
- { "no-call-ret-replacement", no_argument,
+ { "no-call-ret-replacement", no_argument,
NULL, OPTION_NO_CALL_RET_REPLACEMENT},
- { "pmem-wrap-around", required_argument,
+ { "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=<val> "
- "Make the linker relaxation machine assume that a\n"
- " "
- "program counter wrap-around occures at address\n"
- " "
- "<val>. 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=<val> "
+ "Make the linker relaxation machine assume that a\n"
+ " "
+ " program counter wrap-around occures at address\n"
+ " "
+ " <val>. 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;
#
# 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
projects / deliverable / binutils-gdb.git / blobdiff