};
-#define MAX_OP_LEN 256
+#define MAX_OP_LEN 4096
typedef enum msp_isa
{
The code which initializes these sections should have a global
label for these symbols, and should be marked with KEEP() in the
- linker script.
- */
+ linker script. */
+
static void
-msp430_section (int arg)
+msp430_make_init_symbols (const char * name)
{
- char * saved_ilp = input_line_pointer;
- char * name = obj_elf_section_name ();
-
if (strncmp (name, ".bss", 4) == 0
|| strncmp (name, ".gnu.linkonce.b.", 16) == 0)
(void) symbol_find_or_make ("__crt0_init_bss");
|| strncmp (name, ".gnu.linkonce.d.", 16) == 0)
(void) symbol_find_or_make ("__crt0_movedata");
+ /* Note - data assigned to the .either.data section may end up being
+ placed in the .upper.data section if the .lower.data section is
+ full. Hence the need to define the crt0 symbol. */
+ if (strncmp (name, ".either.data", 12) == 0
+ || strncmp (name, ".upper.data", 11) == 0)
+ (void) symbol_find_or_make ("__crt0_move_highdata");
+
+ /* See note about .either.data above. */
+ if (strncmp (name, ".upper.bss", 10) == 0
+ || strncmp (name, ".either.bss", 11) == 0)
+ (void) symbol_find_or_make ("__crt0_init_highbss");
+}
+
+static void
+msp430_section (int arg)
+{
+ char * saved_ilp = input_line_pointer;
+ char * name = obj_elf_section_name ();
+
+ msp430_make_init_symbols (name);
+
input_line_pointer = saved_ilp;
obj_elf_section (arg);
}
if (sec->size == 0)
return;
- if (strncmp (name, ".bss", 4) == 0
- || strncmp (name, ".gnu.linkonce.b.", 16) == 0)
- (void) symbol_find_or_make ("__crt0_init_bss");
-
- if (strncmp (name, ".data", 5) == 0
- || strncmp (name, ".gnu.linkonce.d.", 16) == 0)
- (void) symbol_find_or_make ("__crt0_movedata");
+ msp430_make_init_symbols (name);
}
static void
--- /dev/null
+# This shell script emits a C file. -*- C -*-
+# It does some substitutions.
+fragment <<EOF
+/* This file is is generated by a shell script. DO NOT EDIT! */
+
+/* Emulate the original gld for the given ${EMULATION_NAME}
+ Copyright (C) 2014-2015 Free Software Foundation, Inc.
+ Written by Steve Chamberlain steve@cygnus.com
+ Extended for the MSP430 by Nick Clifton nickc@redhat.com
+
+ This file is part of the GNU Binutils.
+
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
+
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
+
+#define TARGET_IS_${EMULATION_NAME}
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "bfdlink.h"
+
+#include "ld.h"
+#include "ldmain.h"
+#include "ldmisc.h"
+#include "ldexp.h"
+#include "ldlang.h"
+#include "ldfile.h"
+#include "ldemul.h"
+#include "libiberty.h"
+
+EOF
+
+# Import any needed special functions and/or overrides.
+#
+if test -n "$EXTRA_EM_FILE" ; then
+ source_em ${srcdir}/emultempl/${EXTRA_EM_FILE}.em
+fi
+
+if test x"$LDEMUL_BEFORE_PARSE" != xgld"$EMULATION_NAME"_before_parse; then
+fragment <<EOF
+
+static void
+gld${EMULATION_NAME}_before_parse (void)
+{
+#ifndef TARGET_ /* I.e., if not generic. */
+ ldfile_set_output_arch ("`echo ${ARCH}`", bfd_arch_unknown);
+#endif /* not TARGET_ */
+
+ /* The MSP430 port *needs* linker relaxtion in order to cope with large
+ functions where conditional branches do not fit into a +/- 1024 byte range. */
+ if (! link_info.relocatable)
+ TARGET_ENABLE_RELAXATION;
+}
+
+EOF
+fi
+
+if test x"$LDEMUL_GET_SCRIPT" != xgld"$EMULATION_NAME"_get_script; then
+fragment <<EOF
+
+static char *
+gld${EMULATION_NAME}_get_script (int *isfile)
+EOF
+
+if test x"$COMPILE_IN" = xyes
+then
+# Scripts compiled in.
+
+# sed commands to quote an ld script as a C string.
+sc="-f stringify.sed"
+
+fragment <<EOF
+{
+ *isfile = 0;
+
+ if (link_info.relocatable && config.build_constructors)
+ return
+EOF
+sed $sc ldscripts/${EMULATION_NAME}.xu >> e${EMULATION_NAME}.c
+echo ' ; else if (link_info.relocatable) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xr >> e${EMULATION_NAME}.c
+echo ' ; else if (!config.text_read_only) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xbn >> e${EMULATION_NAME}.c
+echo ' ; else if (!config.magic_demand_paged) return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.xn >> e${EMULATION_NAME}.c
+echo ' ; else return' >> e${EMULATION_NAME}.c
+sed $sc ldscripts/${EMULATION_NAME}.x >> e${EMULATION_NAME}.c
+echo '; }' >> e${EMULATION_NAME}.c
+
+else
+# Scripts read from the filesystem.
+
+fragment <<EOF
+{
+ *isfile = 1;
+
+ if (link_info.relocatable && config.build_constructors)
+ return "ldscripts/${EMULATION_NAME}.xu";
+ else if (link_info.relocatable)
+ return "ldscripts/${EMULATION_NAME}.xr";
+ else if (!config.text_read_only)
+ return "ldscripts/${EMULATION_NAME}.xbn";
+ else if (!config.magic_demand_paged)
+ return "ldscripts/${EMULATION_NAME}.xn";
+ else
+ return "ldscripts/${EMULATION_NAME}.x";
+}
+EOF
+fi
+fi
+
+if test x"$LDEMUL_PLACE_ORPHAN" != xgld"$EMULATION_NAME"_place_orphan; then
+fragment <<EOF
+
+/* Helper function for place_orphan that computes the size
+ of sections already mapped to the given statement. */
+
+static bfd_size_type
+scan_children (lang_statement_union_type * l)
+{
+ bfd_size_type amount = 0;
+
+ while (l != NULL)
+ {
+ switch (l->header.type)
+ {
+ case lang_input_section_enum:
+ if (l->input_section.section->flags & SEC_ALLOC)
+ amount += l->input_section.section->size;
+ break;
+
+ case lang_constructors_statement_enum:
+ case lang_assignment_statement_enum:
+ break;
+
+ case lang_wild_statement_enum:
+ amount += scan_children (l->wild_statement.children.head);
+ break;
+
+ default:
+ fprintf (stderr, "msp430 orphan placer: unhandled lang type %d\n", l->header.type);
+ break;
+ }
+
+ l = l->header.next;
+ }
+
+ return amount;
+}
+
+/* Place an orphan section. We use this to put .either sections
+ into either their lower or their upper equivalents. */
+
+static lang_output_section_statement_type *
+gld${EMULATION_NAME}_place_orphan (asection * s,
+ const char * secname,
+ int constraint)
+{
+ char * lower_name;
+ char * upper_name;
+ char * name;
+ lang_output_section_statement_type * lower;
+ lang_output_section_statement_type * upper;
+ lang_output_section_statement_type * os;
+
+ if ((s->flags & SEC_ALLOC) == 0)
+ return NULL;
+
+ if (link_info.relocatable)
+ return NULL;
+
+ /* If constraints are involved let the linker handle the placement normally. */
+ if (constraint != 0)
+ return NULL;
+
+ /* We only need special handling for .either sections. */
+ if (strncmp (secname, ".either.", 8) != 0)
+ return NULL;
+
+ /* Skip the .either prefix. */
+ secname += 7;
+
+ /* Compute the names of the corresponding upper and lower
+ sections. If the input section name contains another period,
+ only use the part of the name before the second dot. */
+ if (strchr (secname + 1, '.') != NULL)
+ {
+ name = ACONCAT ((secname, NULL));
+
+ * strchr (name + 1, '.') = 0;
+ }
+ else
+ name = (char *) secname;
+
+ lower_name = ACONCAT ((".lower", name, NULL));
+ upper_name = ACONCAT ((".upper", name, NULL));
+
+ /* Find the corresponding lower and upper sections. */
+ lower = lang_output_section_find (lower_name);
+ upper = lang_output_section_find (upper_name);
+ /* If the upper section does not exist, try again without the suffix. */
+ if (upper == NULL)
+ upper = lang_output_section_find (name);
+
+ if (lower == NULL)
+ {
+ os = upper;
+ if (upper == NULL)
+ {
+ einfo ("%P: error: no section named %s or %s in linker script\n", lower_name, upper_name);
+ return NULL;
+ }
+ }
+ else if (upper == NULL)
+ os = lower;
+ else if (lower->region == NULL)
+ os = lower;
+ /* If the section is too big for the region containing
+ the lower section then do not even try to use it. */
+ else if (lower->region->length < s->size)
+ os = upper;
+ else
+ {
+ bfd_size_type amount = 0;
+ struct lang_output_section_statement_struct * p;
+
+ amount += scan_children (lower->children.head);
+
+ /* Also check forwards for other statements assigned to the same region. */
+ for (p = lower->next; p != NULL; p = p->next)
+ if (p->region == lower->region)
+ amount += scan_children (p->children.head);
+
+ /* Scan backwards as well. */
+ for (p = lower->prev; p != NULL; p = p->prev)
+ if (p->region == lower->region)
+ amount += scan_children (p->children.head);
+
+ if (amount + s->size >= lower->region->length)
+ os = upper;
+ else
+ os = lower;
+ }
+
+ lang_add_section (& os->children, s, NULL, os);
+ return os;
+}
+EOF
+fi
+
+fragment <<EOF
+
+struct ld_emulation_xfer_struct ld_${EMULATION_NAME}_emulation =
+{
+ ${LDEMUL_BEFORE_PARSE-gld${EMULATION_NAME}_before_parse},
+ ${LDEMUL_SYSLIB-syslib_default},
+ ${LDEMUL_HLL-hll_default},
+ ${LDEMUL_AFTER_PARSE-after_parse_default},
+ ${LDEMUL_AFTER_OPEN-after_open_default},
+ ${LDEMUL_AFTER_ALLOCATION-after_allocation_default},
+ ${LDEMUL_SET_OUTPUT_ARCH-set_output_arch_default},
+ ${LDEMUL_CHOOSE_TARGET-ldemul_default_target},
+ ${LDEMUL_BEFORE_ALLOCATION-before_allocation_default},
+ ${LDEMUL_GET_SCRIPT-gld${EMULATION_NAME}_get_script},
+ "${EMULATION_NAME}",
+ "${OUTPUT_FORMAT}",
+ ${LDEMUL_FINISH-finish_default},
+ ${LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS-NULL},
+ ${LDEMUL_OPEN_DYNAMIC_ARCHIVE-NULL},
+ ${LDEMUL_PLACE_ORPHAN-gld${EMULATION_NAME}_place_orphan},
+ ${LDEMUL_SET_SYMBOLS-NULL},
+ ${LDEMUL_PARSE_ARGS-NULL},
+ ${LDEMUL_ADD_OPTIONS-NULL},
+ ${LDEMUL_HANDLE_OPTION-NULL},
+ ${LDEMUL_UNRECOGNIZED_FILE-NULL},
+ ${LDEMUL_LIST_OPTIONS-NULL},
+ ${LDEMUL_RECOGNIZED_FILE-NULL},
+ ${LDEMUL_FIND_POTENTIAL_LIBRARIES-NULL},
+ ${LDEMUL_NEW_VERS_PATTERN-NULL},
+ ${LDEMUL_EXTRA_MAP_FILE_TEXT-NULL}
+};
+EOF
+# \f
+# Local Variables:
+# mode: c
+# End:
projects / binutils-gdb.git / commitdiff