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2009-10-16 Doug Kwan <dougkwan@google.com>

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* expression.cc (class Segment_start_expression): New class definition.
	(Segment_start_expression::value): New method definition.
	(script_exp_function_segment_start): Return a new
	Segment_start_expression.
	* gold/script-c.h (script_saw_segment_start_expression): New function
	prototype.
	* script-sections.cc (Script_sections::Script_sections): Initialize
	SAW_SEGMENT_START_EXPRESSION_ to false.
	(Script_sections::set_section_addresses): Use -Ttext, -Tdata
	and -Tbbs options to specify section addresses if given in
	command line and no SEGMENT_START expression is seen in a script.
	* script-sections.h (Script_sections::saw_segment_start_expression,
	Script_sections::set_saw_segment_start_expression): New method
	definition.
	(Script_sections::saw_segment_start_expression_): New data member
	declaration.
	* script.cc (script_saw_segment_start_expression): New function.
	* yyscript.y (SEGMENT_START): Call script_saw_segment_start_expression.
	* testsuite/Makefile.am (check_SCRIPTS): Add script_test_6.sh,
	script_test_7.sh and script_test_8.sh.
	(check_DATA): Add script_test_6.stdout, script_test_7.stdout and
	script_test_8.stdout.
	(MOSTLYCLEANFILES): Add script_test_6, script_test_7 and script_test_8.
	(script_test_6, script_test_6.stdout, script_test_7,
	script_test_7.stdout, script_test_8, script_test_8.stdout): New rules.
	* Makefile.in: Regenerate.
	* testsuite/script_test_6.sh: New file.
	* testsuite/script_test_6.t: Same.
	* testsuite/script_test_7.sh: Same.
	* testsuite/script_test_7.t: Same.
	* testsuite/script_test_8.sh: Same.
This commit is contained in:
Doug Kwan 2009-10-16 18:56:07 +00:00
parent 64b1ae3731
commit 3c12dcdba0
14 changed files with 425 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
gold/ChangeLog
View File

@ -1,3 +1,37 @@
2009-10-16 Doug Kwan <dougkwan@google.com>
* expression.cc (class Segment_start_expression): New class definition.
(Segment_start_expression::value): New method definition.
(script_exp_function_segment_start): Return a new
Segment_start_expression.
* gold/script-c.h (script_saw_segment_start_expression): New function
prototype.
* script-sections.cc (Script_sections::Script_sections): Initialize
SAW_SEGMENT_START_EXPRESSION_ to false.
(Script_sections::set_section_addresses): Use -Ttext, -Tdata
and -Tbbs options to specify section addresses if given in
command line and no SEGMENT_START expression is seen in a script.
* script-sections.h (Script_sections::saw_segment_start_expression,
Script_sections::set_saw_segment_start_expression): New method
definition.
(Script_sections::saw_segment_start_expression_): New data member
declaration.
* script.cc (script_saw_segment_start_expression): New function.
* yyscript.y (SEGMENT_START): Call script_saw_segment_start_expression.
* testsuite/Makefile.am (check_SCRIPTS): Add script_test_6.sh,
script_test_7.sh and script_test_8.sh.
(check_DATA): Add script_test_6.stdout, script_test_7.stdout and
script_test_8.stdout.
(MOSTLYCLEANFILES): Add script_test_6, script_test_7 and script_test_8.
(script_test_6, script_test_6.stdout, script_test_7,
script_test_7.stdout, script_test_8, script_test_8.stdout): New rules.
* Makefile.in: Regenerate.
* testsuite/script_test_6.sh: New file.
* testsuite/script_test_6.t: Same.
* testsuite/script_test_7.sh: Same.
* testsuite/script_test_7.t: Same.
* testsuite/script_test_8.sh: Same.
2009-10-16 Doug Kwan <dougkwan@google.com>
* output.cc (Output_segment::set_section_list_address): Cast

61
gold/expression.cc
View File

@ -1113,17 +1113,62 @@ script_exp_function_sizeof_headers()
return new Sizeof_headers_expression();
}
// In the GNU linker SEGMENT_START basically returns the value for
// -Ttext, -Tdata, or -Tbss. We could implement this by copying the
// values from General_options to Parameters. But I doubt that
// anybody actually uses it. The point of it for the GNU linker was
// because -Ttext set the address of the .text section rather than the
// text segment. In gold -Ttext sets the text segment address anyhow.
// SEGMENT_START.
class Segment_start_expression : public Unary_expression
{
public:
Segment_start_expression(const char* segment_name, size_t segment_name_len,
Expression* default_value)
: Unary_expression(default_value),
segment_name_(segment_name, segment_name_len)
{ }
uint64_t
value(const Expression_eval_info*);
void
print(FILE* f) const
{
fprintf(f, "SEGMENT_START(\"%s\", ", this->segment_name_.c_str());
this->arg_print(f);
fprintf(f, ")");
}
private:
std::string segment_name_;
};
uint64_t
Segment_start_expression::value(const Expression_eval_info* eei)
{
// Check for command line overrides.
if (parameters->options().user_set_Ttext()
&& this->segment_name_ == ".text")
return parameters->options().Ttext();
else if (parameters->options().user_set_Tdata()
&& this->segment_name_ == ".data")
return parameters->options().Tdata();
else if (parameters->options().user_set_Tbss()
&& this->segment_name_ == ".bss")
return parameters->options().Tbss();
else
{
Output_section* dummy;
uint64_t ret = this->arg_value(eei, &dummy);
// Force the value to be absolute.
*eei->result_section_pointer = NULL;
return ret;
}
}
extern "C" Expression*
script_exp_function_segment_start(const char*, size_t, Expression*)
script_exp_function_segment_start(const char* segment_name,
size_t segment_name_len,
Expression* default_value)
{
gold_fatal(_("SEGMENT_START not implemented"));
return new Segment_start_expression(segment_name, segment_name_len,
default_value);
}
// Functions for memory regions. These can not be implemented unless

5
gold/script-c.h
View File

@ -389,6 +389,11 @@ script_data_segment_align(void* closure);
extern void
script_data_segment_relro_end(void* closure);
/* Record the fact that a SEGMENT_START expression is seen. */
extern void
script_saw_segment_start_expression(void* closure);
/* Called by the bison parser for expressions. */
extern Expression_ptr

47
gold/script-sections.cc
View File

@ -2487,7 +2487,8 @@ Script_sections::Script_sections()
orphan_section_placement_(NULL),
data_segment_align_start_(),
saw_data_segment_align_(false),
saw_relro_end_(false)
saw_relro_end_(false),
saw_segment_start_expression_(false)
{
}
@ -2850,10 +2851,52 @@ Script_sections::set_section_addresses(Symbol_table* symtab, Layout* layout)
// For a relocatable link, we implicitly set dot to zero.
uint64_t dot_value = 0;
uint64_t load_address = 0;
// Check to see if we want to use any of -Ttext, -Tdata and -Tbss options
// to set section addresses. If the script has any SEGMENT_START
// expression, we do not set the section addresses.
bool use_tsection_options =
(!this->saw_segment_start_expression_
&& (parameters->options().user_set_Ttext()
|| parameters->options().user_set_Tdata()
|| parameters->options().user_set_Tbss()));
for (Sections_elements::iterator p = this->sections_elements_->begin();
p != this->sections_elements_->end();
++p)
(*p)->set_section_addresses(symtab, layout, &dot_value, &load_address);
{
Output_section* os = (*p)->get_output_section();
// Handle -Ttext, -Tdata and -Tbss options. We do this by looking for
// the special sections by names and doing dot assignments.
if (use_tsection_options
&& os != NULL
&& (os->flags() & elfcpp::SHF_ALLOC) != 0)
{
uint64_t new_dot_value = dot_value;
if (parameters->options().user_set_Ttext()
&& strcmp(os->name(), ".text") == 0)
new_dot_value = parameters->options().Ttext();
else if (parameters->options().user_set_Tdata()
&& strcmp(os->name(), ".data") == 0)
new_dot_value = parameters->options().Tdata();
else if (parameters->options().user_set_Tbss()
&& strcmp(os->name(), ".bss") == 0)
new_dot_value = parameters->options().Tbss();
// Update dot and load address if necessary.
if (new_dot_value < dot_value)
gold_error(_("dot may not move backward"));
else if (new_dot_value != dot_value)
{
dot_value = new_dot_value;
load_address = new_dot_value;
}
}
(*p)->set_section_addresses(symtab, layout, &dot_value, &load_address);
}
if (this->phdrs_elements_ != NULL)
{

13
gold/script-sections.h
View File

@ -191,6 +191,17 @@ class Script_sections
void
release_segments();
// Whether we ever saw a SEGMENT_START expression, the presence of which
// changes the behaviour of -Ttext, -Tdata and -Tbss options.
bool
saw_segment_start_expression() const
{ return this->saw_segment_start_expression_; }
// Set the flag which indicates whether we saw a SEGMENT_START expression.
void
set_saw_segment_start_expression(bool value)
{ this->saw_segment_start_expression_ = value; }
// Print the contents to the FILE. This is for debugging.
void
print(FILE*) const;
@ -253,6 +264,8 @@ class Script_sections
bool saw_data_segment_align_;
// Whether we have seen DATA_SEGMENT_RELRO_END.
bool saw_relro_end_;
// Whether we have seen SEGMENT_START.
bool saw_segment_start_expression_;
};
} // End namespace gold.

8
gold/script.cc
View File

@ -2739,3 +2739,11 @@ script_phdr_string_to_type(void* closurev, const char* name, size_t namelen)
yyerror(closurev, _("unknown PHDR type (try integer)"));
return elfcpp::PT_NULL;
}
extern "C" void
script_saw_segment_start_expression(void* closurev)
{
Parser_closure* closure = static_cast<Parser_closure*>(closurev);
Script_sections* ss = closure->script_options()->script_sections();
ss->set_saw_segment_start_expression(true);
}

26
gold/testsuite/Makefile.am
View File

@ -1009,6 +1009,32 @@ script_test_5: script_test_5.o gcctestdir/ld $(srcdir)/script_test_5.t
script_test_5.stdout: script_test_5
$(TEST_READELF) -SW script_test_5 > script_test_5.stdout
check_SCRIPTS += script_test_6.sh
check_DATA += script_test_6.stdout
MOSTLYCLEANFILES += script_test_6
script_test_6: basic_test.o gcctestdir/ld $(srcdir)/script_test_6.t
$(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_6.t \
-Wl,-Ttext=0x10001000 -Wl,-Tdata=0x10200000 -Wl,-Tbss=0x10400000
script_test_6.stdout: script_test_6
$(TEST_READELF) -SlW script_test_6 > script_test_6.stdout
check_SCRIPTS += script_test_7.sh
check_DATA += script_test_7.stdout
MOSTLYCLEANFILES += script_test_7
script_test_7: basic_test.o gcctestdir/ld $(srcdir)/script_test_7.t
$(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_7.t
script_test_7.stdout: script_test_7
$(TEST_READELF) -SlW script_test_7 > script_test_7.stdout
check_SCRIPTS += script_test_8.sh
check_DATA += script_test_8.stdout
MOSTLYCLEANFILES += script_test_8
script_test_8: basic_test.o gcctestdir/ld $(srcdir)/script_test_7.t
$(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_7.t \
-Wl,-Ttext=0x20001000 -Wl,-Tdata=0x20200000 -Wl,-Tbss=0x20400000
script_test_8.stdout: script_test_8
$(TEST_READELF) -SlW script_test_8 > script_test_8.stdout
# Test --dynamic-list, --dynamic-list-data, --dynamic-list-cpp-new,
# and --dynamic-list-cpp-typeinfo

29
gold/testsuite/Makefile.in
View File

@ -67,7 +67,10 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_matching_test.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_3.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_4.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_5.sh dynamic_list.sh
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_5.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_6.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_7.sh \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_8.sh dynamic_list.sh
# Create the data files that debug_msg.sh analyzes.
@ -92,6 +95,9 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_3.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_4.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_5.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_6.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_7.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_8.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ dynamic_list.stdout
@GCC_TRUE@@NATIVE_LINKER_TRUE@am__append_3 = gc_comdat_test \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ gc_tls_test icf_test \
@ -242,9 +248,10 @@ check_PROGRAMS = object_unittest$(EXEEXT) binary_unittest$(EXEEXT) \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ ver_matching_test.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_3.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_4 script_test_5 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ dynamic_list dynamic_list.stdout \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libthin1.a libthin3.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libthinall.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_6 script_test_7 \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ script_test_8 dynamic_list \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ dynamic_list.stdout libthin1.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ libthin3.a libthinall.a \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/thin_archive_test_2.o \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/thin_archive_test_4.o \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ alt/libthin2.a alt/libthin4.a
@ -2972,6 +2979,20 @@ uninstall-am:
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ script_test_5.o -T $(srcdir)/script_test_5.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_5.stdout: script_test_5
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_READELF) -SW script_test_5 > script_test_5.stdout
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_6: basic_test.o gcctestdir/ld $(srcdir)/script_test_6.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_6.t \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ -Wl,-Ttext=0x10001000 -Wl,-Tdata=0x10200000 -Wl,-Tbss=0x10400000
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_6.stdout: script_test_6
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_READELF) -SlW script_test_6 > script_test_6.stdout
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_7: basic_test.o gcctestdir/ld $(srcdir)/script_test_7.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_7.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_7.stdout: script_test_7
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_READELF) -SlW script_test_7 > script_test_7.stdout
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_8: basic_test.o gcctestdir/ld $(srcdir)/script_test_7.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ basic_test.o -T $(srcdir)/script_test_7.t \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ -Wl,-Ttext=0x20001000 -Wl,-Tdata=0x20200000 -Wl,-Tbss=0x20400000
@GCC_TRUE@@NATIVE_LINKER_TRUE@script_test_8.stdout: script_test_8
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(TEST_READELF) -SlW script_test_8 > script_test_8.stdout
@GCC_TRUE@@NATIVE_LINKER_TRUE@dynamic_list: basic_test.o gcctestdir/ld $(srcdir)/dynamic_list.t
@GCC_TRUE@@NATIVE_LINKER_TRUE@ $(CXXLINK) -Bgcctestdir/ basic_test.o \
@GCC_TRUE@@NATIVE_LINKER_TRUE@ -Wl,--dynamic-list $(srcdir)/dynamic_list.t \

43
gold/testsuite/script_test_6.sh Executable file
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@ -0,0 +1,43 @@
#!/bin/sh
# script_test_6.sh -- test for -Ttext, -Tdata and -Tbss with a script.
# Copyright 2009 Free Software Foundation, Inc.
# Written by Doug Kwan <dougkwan@google.com>.
# This file is part of gold.
# 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.
# This file goes with script_test_4.t, which is a linker script which
# starts the program at an unaligned address.
check()
{
if ! grep -q "$2" "$1"
then
echo "Did not find expected section in $1:"
echo " $2"
echo ""
echo "Actual output below:"
cat "$1"
exit 1
fi
}
check script_test_6.stdout "\\.text[ ]*PROGBITS[ ]*0*10001000"
check script_test_6.stdout "\\.data[ ]*PROGBITS[ ]*0*10200000"
check script_test_6.stdout "\\.bss[ ]*NOBITS[ ]*0*10400000"

41
gold/testsuite/script_test_6.t Normal file
View File

@ -0,0 +1,41 @@
/* script_test_5.t -- linker script test 5 for gold
Copyright 2009 Free Software Foundation, Inc.
Written by Cary Coutant <ccoutant@google.com>.
This file is part of gold.
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. */
/* We won't try to run this program, just ensure that it links
as expected. */
SECTIONS
{
. = 0x10000000;
/* With luck this will be enough to get the program working. */
.interp : { *(.interp) }
.text : { *(.text .text.*) }
.rodata : { *(.rodata .rodata.*) }
. += 0x100000;
. = ALIGN(0x100);
.dynamic : { *(.dynamic) }
.data : { *(.data) }
. += 0x100000;
. = ALIGN(0x100);
.bss : { *(.bss) }
}

43
gold/testsuite/script_test_7.sh Executable file
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@ -0,0 +1,43 @@
#!/bin/sh
# script_test_7.sh -- test for SEGMENT_START expressions.
# Copyright 2009 Free Software Foundation, Inc.
# Written by Doug Kwan <dougkwan@google.com>.
# This file is part of gold.
# 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.
# This file goes with script_test_4.t, which is a linker script which
# starts the program at an unaligned address.
check()
{
if ! grep -q "$2" "$1"
then
echo "Did not find expected section in $1:"
echo " $2"
echo ""
echo "Actual output below:"
cat "$1"
exit 1
fi
}
check script_test_7.stdout "\\.interp[ ]*PROGBITS[ ]*0*10000100"
check script_test_7.stdout "\\.data[ ]*PROGBITS[ ]*0*10200000"
check script_test_7.stdout "\\.bss[ ]*NOBITS[ ]*0*10400..."

41
gold/testsuite/script_test_7.t Normal file
View File

@ -0,0 +1,41 @@
/* script_test_5.t -- linker script test 5 for gold
Copyright 2009 Free Software Foundation, Inc.
Written by Cary Coutant <ccoutant@google.com>.
This file is part of gold.
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. */
/* We won't try to run this program, just ensure that it links
as expected. */
SECTIONS
{
. = SEGMENT_START(".text", 0x10000100);
/* With luck this will be enough to get the program working. */
.interp : { *(.interp) }
.text : { *(.text .text.*) }
.rodata : { *(.rodata .rodata.*) }
.dynamic : { *(.dynamic) }
. = SEGMENT_START(".data", 0x10200000);
.data : { *(.data) }
. = SEGMENT_START(".bss", 0x10400000);
.bss : { *(.bss) }
}

44
gold/testsuite/script_test_8.sh Executable file
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@ -0,0 +1,44 @@
#!/bin/sh
# script_test_8.sh -- test for SEGMENT_START expressions with
# -Ttext, -Tdata and -Tbss in a script.
# Copyright 2009 Free Software Foundation, Inc.
# Written by Doug Kwan <dougkwan@google.com>.
# This file is part of gold.
# 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.
# This file goes with script_test_4.t, which is a linker script which
# starts the program at an unaligned address.
check()
{
if ! grep -q "$2" "$1"
then
echo "Did not find expected section in $1:"
echo " $2"
echo ""
echo "Actual output below:"
cat "$1"
exit 1
fi
}
check script_test_8.stdout "\\.interp[ ]*PROGBITS[ ]*0*20001000"
check script_test_8.stdout "\\.data[ ]*PROGBITS[ ]*0*20200000"
check script_test_8.stdout "\\.bss[ ]*NOBITS[ ]*0*2040...."

4
gold/yyscript.y
View File

@ -861,6 +861,10 @@ exp:
| SEGMENT_START '(' string ',' exp ')'
{
$$ = script_exp_function_segment_start($3.value, $3.length, $5);
/* We need to take note of any SEGMENT_START expressions
because they change the behaviour of -Ttext, -Tdata and
-Tbss options. */
script_saw_segment_start_expression(closure);
}
| ASSERT_K '(' exp ',' string ')'
{ $$ = script_exp_function_assert($3, $5.value, $5.length); }