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authorIan Lance Taylor <ian@airs.com>2010-04-23 04:47:33 +0000
committerIan Lance Taylor <ian@airs.com>2010-04-23 04:47:33 +0000
commitf6973bdcb778ca7a54817a696cb0c6457f4ae96f (patch)
treea56937799943c26b2d9ad4273c0617c09f0ae696 /gold
parent496ddd4f6aecbfc250072e0e960fbae21fd3f37b (diff)
downloadgdb-f6973bdcb778ca7a54817a696cb0c6457f4ae96f.zip
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* expression.cc (Expression::Expression_eval_info): Add
result_alignment_pointer field. (Expression::eval_with_dot): Add result_alignment_pointer parameter. Change all callers. (Expression::eval_maybe_dot): Likewise. (class Binary_expression): Add alignment_pointer parameter to left_value and right_value. Change all callers. (BINARY_EXPRESSION): Set result alignment. (class Trinary_expression): Add alignment_pointer parameter to arg2_value and arg3_value. Change all callers. (Trinary_cond::value): Set result alignment. (Max_expression::value, Min_expression::value): Likewise. (Align_expression::value): Likewise. * script-sections.cc (class Sections_element): Add dot_alignment parameter to set_section_addresses virtual function. Update instantiations. (class Output_section_element): Likewise. (Script_sections::create_segments): Add dot_alignment parameter. Change all callers. (Script_sections::create_segments_from_phdrs_clause): Likewise. (Script_sections::set_phdrs_clause_addresses): Likewise. * script-sections.h: Update declarations. * script.h: Update declarations. * output.h (Output_segment::set_minimum_p_align): Don't decrease min_p_align. * testsuite/script_test_3.t: Set large alignment. * testsuite/script_test_3.sh: Make sure that at least one LOAD segment has expected alignment.
Diffstat (limited to 'gold')
-rw-r--r--gold/ChangeLog31
-rw-r--r--gold/expression.cc118
-rw-r--r--gold/output.h5
-rw-r--r--gold/script-sections.cc92
-rw-r--r--gold/script-sections.h6
-rw-r--r--gold/script.cc4
-rw-r--r--gold/script.h9
-rwxr-xr-xgold/testsuite/script_test_3.sh14
-rw-r--r--gold/testsuite/script_test_3.t2
9 files changed, 208 insertions, 73 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog
index f3fabd0..54e775d 100644
--- a/gold/ChangeLog
+++ b/gold/ChangeLog
@@ -1,3 +1,34 @@
+2010-04-22 Ian Lance Taylor <iant@google.com>
+
+ * expression.cc (Expression::Expression_eval_info): Add
+ result_alignment_pointer field.
+ (Expression::eval_with_dot): Add result_alignment_pointer
+ parameter. Change all callers.
+ (Expression::eval_maybe_dot): Likewise.
+ (class Binary_expression): Add alignment_pointer parameter to
+ left_value and right_value. Change all callers.
+ (BINARY_EXPRESSION): Set result alignment.
+ (class Trinary_expression): Add alignment_pointer parameter to
+ arg2_value and arg3_value. Change all callers.
+ (Trinary_cond::value): Set result alignment.
+ (Max_expression::value, Min_expression::value): Likewise.
+ (Align_expression::value): Likewise.
+ * script-sections.cc (class Sections_element): Add dot_alignment
+ parameter to set_section_addresses virtual function. Update
+ instantiations.
+ (class Output_section_element): Likewise.
+ (Script_sections::create_segments): Add dot_alignment parameter.
+ Change all callers.
+ (Script_sections::create_segments_from_phdrs_clause): Likewise.
+ (Script_sections::set_phdrs_clause_addresses): Likewise.
+ * script-sections.h: Update declarations.
+ * script.h: Update declarations.
+ * output.h (Output_segment::set_minimum_p_align): Don't decrease
+ min_p_align.
+ * testsuite/script_test_3.t: Set large alignment.
+ * testsuite/script_test_3.sh: Make sure that at least one LOAD
+ segment has expected alignment.
+
2010-04-22 Nick Clifton <nickc@redhat.com>
* po/gold.pot: Updated by the Translation project.
diff --git a/gold/expression.cc b/gold/expression.cc
index 853a698..134b0fa 100644
--- a/gold/expression.cc
+++ b/gold/expression.cc
@@ -66,6 +66,8 @@ struct Expression::Expression_eval_info
Output_section* dot_section;
// Points to where the section of the result should be stored.
Output_section** result_section_pointer;
+ // Pointer to where the alignment of the result should be stored.
+ uint64_t* result_alignment_pointer;
};
// Evaluate an expression.
@@ -76,7 +78,7 @@ Expression::eval(const Symbol_table* symtab, const Layout* layout,
{
Output_section* dummy;
return this->eval_maybe_dot(symtab, layout, check_assertions,
- false, 0, NULL, &dummy);
+ false, 0, NULL, &dummy, NULL);
}
// Evaluate an expression which may refer to the dot symbol.
@@ -85,10 +87,12 @@ uint64_t
Expression::eval_with_dot(const Symbol_table* symtab, const Layout* layout,
bool check_assertions, uint64_t dot_value,
Output_section* dot_section,
- Output_section** result_section_pointer)
+ Output_section** result_section_pointer,
+ uint64_t* result_alignment_pointer)
{
return this->eval_maybe_dot(symtab, layout, check_assertions, true,
- dot_value, dot_section, result_section_pointer);
+ dot_value, dot_section, result_section_pointer,
+ result_alignment_pointer);
}
// Evaluate an expression which may or may not refer to the dot
@@ -98,7 +102,8 @@ uint64_t
Expression::eval_maybe_dot(const Symbol_table* symtab, const Layout* layout,
bool check_assertions, bool is_dot_available,
uint64_t dot_value, Output_section* dot_section,
- Output_section** result_section_pointer)
+ Output_section** result_section_pointer,
+ uint64_t* result_alignment_pointer)
{
Expression_eval_info eei;
eei.symtab = symtab;
@@ -113,6 +118,8 @@ Expression::eval_maybe_dot(const Symbol_table* symtab, const Layout* layout,
*result_section_pointer = NULL;
eei.result_section_pointer = result_section_pointer;
+ eei.result_alignment_pointer = result_alignment_pointer;
+
return this->value(&eei);
}
@@ -247,7 +254,8 @@ class Unary_expression : public Expression
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- arg_section_pointer);
+ arg_section_pointer,
+ eei->result_alignment_pointer);
}
void
@@ -317,26 +325,30 @@ class Binary_expression : public Expression
protected:
uint64_t
left_value(const Expression_eval_info* eei,
- Output_section** section_pointer) const
+ Output_section** section_pointer,
+ uint64_t* alignment_pointer) const
{
return this->left_->eval_maybe_dot(eei->symtab, eei->layout,
eei->check_assertions,
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- section_pointer);
+ section_pointer,
+ alignment_pointer);
}
uint64_t
right_value(const Expression_eval_info* eei,
- Output_section** section_pointer) const
+ Output_section** section_pointer,
+ uint64_t* alignment_pointer) const
{
return this->right_->eval_maybe_dot(eei->symtab, eei->layout,
eei->check_assertions,
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- section_pointer);
+ section_pointer,
+ alignment_pointer);
}
void
@@ -385,15 +397,27 @@ class Binary_expression : public Expression
value(const Expression_eval_info* eei) \
{ \
Output_section* left_section; \
- uint64_t left = this->left_value(eei, &left_section); \
+ uint64_t left_alignment; \
+ uint64_t left = this->left_value(eei, &left_section, \
+ &left_alignment); \
Output_section* right_section; \
- uint64_t right = this->right_value(eei, &right_section); \
+ uint64_t right_alignment; \
+ uint64_t right = this->right_value(eei, &right_section, \
+ &right_alignment); \
if (KEEP_RIGHT && left_section == NULL && right_section != NULL) \
- *eei->result_section_pointer = right_section; \
+ { \
+ *eei->result_section_pointer = right_section; \
+ if (eei->result_alignment_pointer != NULL) \
+ *eei->result_alignment_pointer = right_alignment; \
+ } \
else if (KEEP_LEFT \
&& left_section != NULL \
&& right_section == NULL) \
- *eei->result_section_pointer = left_section; \
+ { \
+ *eei->result_section_pointer = left_section; \
+ if (eei->result_alignment_pointer != NULL) \
+ *eei->result_alignment_pointer = right_alignment; \
+ } \
else if ((WARN || left_section != right_section) \
&& (left_section != NULL || right_section != NULL) \
&& parameters->options().relocatable()) \
@@ -469,31 +493,36 @@ class Trinary_expression : public Expression
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- section_pointer);
+ section_pointer,
+ NULL);
}
uint64_t
arg2_value(const Expression_eval_info* eei,
- Output_section** section_pointer) const
+ Output_section** section_pointer,
+ uint64_t* alignment_pointer) const
{
return this->arg1_->eval_maybe_dot(eei->symtab, eei->layout,
eei->check_assertions,
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- section_pointer);
+ section_pointer,
+ alignment_pointer);
}
uint64_t
arg3_value(const Expression_eval_info* eei,
- Output_section** section_pointer) const
+ Output_section** section_pointer,
+ uint64_t* alignment_pointer) const
{
return this->arg1_->eval_maybe_dot(eei->symtab, eei->layout,
eei->check_assertions,
eei->is_dot_available,
eei->dot_value,
eei->dot_section,
- section_pointer);
+ section_pointer,
+ alignment_pointer);
}
void
@@ -529,8 +558,10 @@ class Trinary_cond : public Trinary_expression
Output_section* arg1_section;
uint64_t arg1 = this->arg1_value(eei, &arg1_section);
return (arg1
- ? this->arg2_value(eei, eei->result_section_pointer)
- : this->arg3_value(eei, eei->result_section_pointer));
+ ? this->arg2_value(eei, eei->result_section_pointer,
+ eei->result_alignment_pointer)
+ : this->arg3_value(eei, eei->result_section_pointer,
+ eei->result_alignment_pointer));
}
void
@@ -565,14 +596,27 @@ class Max_expression : public Binary_expression
value(const Expression_eval_info* eei)
{
Output_section* left_section;
- uint64_t left = this->left_value(eei, &left_section);
+ uint64_t left_alignment;
+ uint64_t left = this->left_value(eei, &left_section, &left_alignment);
Output_section* right_section;
- uint64_t right = this->right_value(eei, &right_section);
+ uint64_t right_alignment;
+ uint64_t right = this->right_value(eei, &right_section, &right_alignment);
if (left_section == right_section)
*eei->result_section_pointer = left_section;
else if ((left_section != NULL || right_section != NULL)
&& parameters->options().relocatable())
gold_warning(_("max applied to section relative value"));
+ if (eei->result_alignment_pointer != NULL)
+ {
+ uint64_t ra = *eei->result_alignment_pointer;
+ if (left > right)
+ ra = std::max(ra, left_alignment);
+ else if (right > left)
+ ra = std::max(ra, right_alignment);
+ else
+ ra = std::max(ra, std::max(left_alignment, right_alignment));
+ *eei->result_alignment_pointer = ra;
+ }
return std::max(left, right);
}
@@ -600,14 +644,27 @@ class Min_expression : public Binary_expression
value(const Expression_eval_info* eei)
{
Output_section* left_section;
- uint64_t left = this->left_value(eei, &left_section);
+ uint64_t left_alignment;
+ uint64_t left = this->left_value(eei, &left_section, &left_alignment);
Output_section* right_section;
- uint64_t right = this->right_value(eei, &right_section);
+ uint64_t right_alignment;
+ uint64_t right = this->right_value(eei, &right_section, &right_alignment);
if (left_section == right_section)
*eei->result_section_pointer = left_section;
else if ((left_section != NULL || right_section != NULL)
&& parameters->options().relocatable())
gold_warning(_("min applied to section relative value"));
+ if (eei->result_alignment_pointer != NULL)
+ {
+ uint64_t ra = *eei->result_alignment_pointer;
+ if (left < right)
+ ra = std::max(ra, left_alignment);
+ else if (right < left)
+ ra = std::max(ra, right_alignment);
+ else
+ ra = std::max(ra, std::max(left_alignment, right_alignment));
+ *eei->result_alignment_pointer = ra;
+ }
return std::min(left, right);
}
@@ -734,12 +791,21 @@ class Align_expression : public Binary_expression
value(const Expression_eval_info* eei)
{
Output_section* align_section;
- uint64_t align = this->right_value(eei, &align_section);
+ uint64_t align = this->right_value(eei, &align_section, NULL);
if (align_section != NULL
&& parameters->options().relocatable())
gold_warning(_("aligning to section relative value"));
- uint64_t value = this->left_value(eei, eei->result_section_pointer);
+ if (eei->result_alignment_pointer != NULL
+ && align > *eei->result_alignment_pointer)
+ {
+ uint64_t a = align;
+ while ((a & (a - 1)) != 0)
+ a &= a - 1;
+ *eei->result_alignment_pointer = a;
+ }
+
+ uint64_t value = this->left_value(eei, eei->result_section_pointer, NULL);
if (align <= 1)
return value;
return ((value + align - 1) / align) * align;
diff --git a/gold/output.h b/gold/output.h
index 8088565..410ec2c 100644
--- a/gold/output.h
+++ b/gold/output.h
@@ -3833,7 +3833,10 @@ class Output_segment
// upward based on the section alignments.
void
set_minimum_p_align(uint64_t align)
- { this->min_p_align_ = align; }
+ {
+ if (align > this->min_p_align_)
+ this->min_p_align_ = align;
+ }
// Set the offset of this segment based on the section. This should
// only be called for a non-PT_LOAD segment.
diff --git a/gold/script-sections.cc b/gold/script-sections.cc
index 24b9103..b4cbb40 100644
--- a/gold/script-sections.cc
+++ b/gold/script-sections.cc
@@ -369,7 +369,8 @@ class Sections_element
// Set section addresses. This includes applying assignments if the
// the expression is an absolute value.
virtual void
- set_section_addresses(Symbol_table*, Layout*, uint64_t*, uint64_t*)
+ set_section_addresses(Symbol_table*, Layout*, uint64_t*, uint64_t*,
+ uint64_t*)
{ }
// Check a constraint (ONLY_IF_RO, etc.) on an output section. If
@@ -447,7 +448,7 @@ class Sections_element_assignment : public Sections_element
// absolute symbols when setting dot.
void
set_section_addresses(Symbol_table* symtab, Layout* layout,
- uint64_t* dot_value, uint64_t*)
+ uint64_t* dot_value, uint64_t*, uint64_t*)
{
this->assignment_.set_if_absolute(symtab, layout, true, *dot_value);
}
@@ -484,17 +485,18 @@ class Sections_element_dot_assignment : public Sections_element
// to be absolute.
Output_section* dummy;
*dot_value = this->val_->eval_with_dot(symtab, layout, true, *dot_value,
- NULL, &dummy);
+ NULL, &dummy, NULL);
}
// Update the dot symbol while setting section addresses.
void
set_section_addresses(Symbol_table* symtab, Layout* layout,
- uint64_t* dot_value, uint64_t* load_address)
+ uint64_t* dot_value, uint64_t* dot_alignment,
+ uint64_t* load_address)
{
Output_section* dummy;
*dot_value = this->val_->eval_with_dot(symtab, layout, false, *dot_value,
- NULL, &dummy);
+ NULL, &dummy, dot_alignment);
*load_address = *dot_value;
}
@@ -577,7 +579,7 @@ class Output_section_element
// the expression is an absolute value.
virtual void
set_section_addresses(Symbol_table*, Layout*, Output_section*, uint64_t,
- uint64_t*, Output_section**, std::string*,
+ uint64_t*, uint64_t*, Output_section**, std::string*,
Input_section_list*)
{ }
@@ -635,8 +637,8 @@ class Output_section_element_assignment : public Output_section_element
// absolute symbols when setting dot.
void
set_section_addresses(Symbol_table* symtab, Layout* layout, Output_section*,
- uint64_t, uint64_t* dot_value, Output_section**,
- std::string*, Input_section_list*)
+ uint64_t, uint64_t* dot_value, uint64_t*,
+ Output_section**, std::string*, Input_section_list*)
{
this->assignment_.set_if_absolute(symtab, layout, true, *dot_value);
}
@@ -668,14 +670,14 @@ class Output_section_element_dot_assignment : public Output_section_element
uint64_t* dot_value, Output_section** dot_section)
{
*dot_value = this->val_->eval_with_dot(symtab, layout, true, *dot_value,
- *dot_section, dot_section);
+ *dot_section, dot_section, NULL);
}
// Update the dot symbol while setting section addresses.
void
set_section_addresses(Symbol_table* symtab, Layout* layout, Output_section*,
- uint64_t, uint64_t* dot_value, Output_section**,
- std::string*, Input_section_list*);
+ uint64_t, uint64_t* dot_value, uint64_t*,
+ Output_section**, std::string*, Input_section_list*);
// Print for debugging.
void
@@ -699,13 +701,14 @@ Output_section_element_dot_assignment::set_section_addresses(
Output_section* output_section,
uint64_t,
uint64_t* dot_value,
+ uint64_t* dot_alignment,
Output_section** dot_section,
std::string* fill,
Input_section_list*)
{
uint64_t next_dot = this->val_->eval_with_dot(symtab, layout, false,
*dot_value, *dot_section,
- dot_section);
+ dot_section, dot_alignment);
if (next_dot < *dot_value)
gold_error(_("dot may not move backward"));
if (next_dot > *dot_value && output_section != NULL)
@@ -807,7 +810,7 @@ Output_data_expression::do_write_to_buffer(unsigned char* buf)
Output_section* dummy;
uint64_t val = this->val_->eval_with_dot(this->symtab_, this->layout_,
true, this->dot_value_,
- this->dot_section_, &dummy);
+ this->dot_section_, &dummy, NULL);
if (parameters->target().is_big_endian())
this->endian_write_to_buffer<true>(val, buf);
@@ -868,8 +871,8 @@ class Output_section_element_data : public Output_section_element
// Store the value in the section.
void
set_section_addresses(Symbol_table*, Layout*, Output_section*, uint64_t,
- uint64_t* dot_value, Output_section**, std::string*,
- Input_section_list*);
+ uint64_t* dot_value, uint64_t*, Output_section**,
+ std::string*, Input_section_list*);
// Print for debugging.
void
@@ -893,6 +896,7 @@ Output_section_element_data::set_section_addresses(
Output_section* os,
uint64_t,
uint64_t* dot_value,
+ uint64_t*,
Output_section** dot_section,
std::string*,
Input_section_list*)
@@ -949,14 +953,14 @@ class Output_section_element_fill : public Output_section_element
// Update the fill value while setting section addresses.
void
set_section_addresses(Symbol_table* symtab, Layout* layout, Output_section*,
- uint64_t, uint64_t* dot_value,
+ uint64_t, uint64_t* dot_value, uint64_t*,
Output_section** dot_section,
std::string* fill, Input_section_list*)
{
Output_section* fill_section;
uint64_t fill_val = this->val_->eval_with_dot(symtab, layout, false,
*dot_value, *dot_section,
- &fill_section);
+ &fill_section, NULL);
if (fill_section != NULL)
gold_warning(_("fill value is not absolute"));
// FIXME: The GNU linker supports fill values of arbitrary length.
@@ -1012,7 +1016,7 @@ class Output_section_element_input : public Output_section_element
// Set the section address.
void
set_section_addresses(Symbol_table* symtab, Layout* layout, Output_section*,
- uint64_t subalign, uint64_t* dot_value,
+ uint64_t subalign, uint64_t* dot_value, uint64_t*,
Output_section**, std::string* fill,
Input_section_list*);
@@ -1309,6 +1313,7 @@ Output_section_element_input::set_section_addresses(
Output_section* output_section,
uint64_t subalign,
uint64_t* dot_value,
+ uint64_t*,
Output_section** dot_section,
std::string* fill,
Input_section_list* input_sections)
@@ -1629,7 +1634,8 @@ class Output_section_definition : public Sections_element
// Set the section address.
void
set_section_addresses(Symbol_table* symtab, Layout* layout,
- uint64_t* dot_value, uint64_t* load_address);
+ uint64_t* dot_value, uint64_t*,
+ uint64_t* load_address);
// Check a constraint (ONLY_IF_RO, etc.) on an output section. If
// this section is constrained, and the input sections do not match,
@@ -1861,7 +1867,7 @@ Output_section_definition::finalize_symbols(Symbol_table* symtab,
Output_section* dummy;
address = this->address_->eval_with_dot(symtab, layout, true,
*dot_value, NULL,
- &dummy);
+ &dummy, NULL);
}
if (this->align_ != NULL)
{
@@ -1869,7 +1875,7 @@ Output_section_definition::finalize_symbols(Symbol_table* symtab,
uint64_t align = this->align_->eval_with_dot(symtab, layout, true,
*dot_value,
NULL,
- &dummy);
+ &dummy, NULL);
address = align_address(address, align);
}
*dot_value = address;
@@ -1918,6 +1924,7 @@ void
Output_section_definition::set_section_addresses(Symbol_table* symtab,
Layout* layout,
uint64_t* dot_value,
+ uint64_t* dot_alignment,
uint64_t* load_address)
{
uint64_t address;
@@ -1930,7 +1937,8 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
{
Output_section* dummy;
address = this->address_->eval_with_dot(symtab, layout, true,
- *dot_value, NULL, &dummy);
+ *dot_value, NULL, &dummy,
+ dot_alignment);
}
uint64_t align;
@@ -1945,7 +1953,7 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
{
Output_section* align_section;
align = this->align_->eval_with_dot(symtab, layout, true, *dot_value,
- NULL, &align_section);
+ NULL, &align_section, NULL);
if (align_section != NULL)
gold_warning(_("alignment of section %s is not absolute"),
this->name_.c_str());
@@ -1976,7 +1984,8 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
Output_section* dummy;
uint64_t laddr =
this->load_address_->eval_with_dot(symtab, layout, true, *dot_value,
- this->output_section_, &dummy);
+ this->output_section_, &dummy,
+ NULL);
if (this->output_section_ != NULL)
this->output_section_->set_load_address(laddr);
this->evaluated_load_address_ = laddr;
@@ -1990,7 +1999,7 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
Output_section* subalign_section;
subalign = this->subalign_->eval_with_dot(symtab, layout, true,
*dot_value, NULL,
- &subalign_section);
+ &subalign_section, NULL);
if (subalign_section != NULL)
gold_warning(_("subalign of section %s is not absolute"),
this->name_.c_str());
@@ -2004,8 +2013,8 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
Output_section* fill_section;
uint64_t fill_val = this->fill_->eval_with_dot(symtab, layout, true,
*dot_value,
- NULL,
- &fill_section);
+ NULL, &fill_section,
+ NULL);
if (fill_section != NULL)
gold_warning(_("fill of section %s is not absolute"),
this->name_.c_str());
@@ -2031,8 +2040,8 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab,
p != this->elements_.end();
++p)
(*p)->set_section_addresses(symtab, layout, this->output_section_,
- subalign, dot_value, &dot_section, &fill,
- &input_sections);
+ subalign, dot_value, dot_alignment,
+ &dot_section, &fill, &input_sections);
gold_assert(input_sections.empty());
@@ -2339,7 +2348,8 @@ class Orphan_output_section : public Sections_element
// Set section addresses.
void
- set_section_addresses(Symbol_table*, Layout*, uint64_t*, uint64_t*);
+ set_section_addresses(Symbol_table*, Layout*, uint64_t*, uint64_t*,
+ uint64_t*);
// Get the list of segments to use for an allocated section when
// using a PHDRS clause.
@@ -2368,6 +2378,7 @@ class Orphan_output_section : public Sections_element
void
Orphan_output_section::set_section_addresses(Symbol_table*, Layout*,
uint64_t* dot_value,
+ uint64_t*,
uint64_t* load_address)
{
typedef std::list<Output_section::Simple_input_section> Input_section_list;
@@ -2950,6 +2961,7 @@ 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 dot_alignment = 0;
uint64_t load_address = 0;
// Check to see if we want to use any of -Ttext, -Tdata and -Tbss options
@@ -2995,7 +3007,8 @@ Script_sections::set_section_addresses(Symbol_table* symtab, Layout* layout)
}
}
- (*p)->set_section_addresses(symtab, layout, &dot_value, &load_address);
+ (*p)->set_section_addresses(symtab, layout, &dot_value, &dot_alignment,
+ &load_address);
}
if (this->phdrs_elements_ != NULL)
@@ -3006,7 +3019,7 @@ Script_sections::set_section_addresses(Symbol_table* symtab, Layout* layout)
(*p)->eval_load_address(symtab, layout);
}
- return this->create_segments(layout);
+ return this->create_segments(layout, dot_alignment);
}
// Sort the sections in order to put them into segments.
@@ -3114,7 +3127,7 @@ Script_sections::header_size_adjustment(uint64_t lma,
// if any.
Output_segment*
-Script_sections::create_segments(Layout* layout)
+Script_sections::create_segments(Layout* layout, uint64_t dot_alignment)
{
gold_assert(this->saw_sections_clause_);
@@ -3122,7 +3135,7 @@ Script_sections::create_segments(Layout* layout)
return NULL;
if (this->saw_phdrs_clause())
- return create_segments_from_phdrs_clause(layout);
+ return create_segments_from_phdrs_clause(layout, dot_alignment);
Layout::Section_list sections;
layout->get_allocated_sections(&sections);
@@ -3195,6 +3208,7 @@ Script_sections::create_segments(Layout* layout)
current_seg = layout->make_output_segment(elfcpp::PT_LOAD,
seg_flags);
current_seg->set_addresses(vma, lma);
+ current_seg->set_minimum_p_align(dot_alignment);
if (first_seg == NULL)
first_seg = current_seg;
is_current_seg_readonly = true;
@@ -3388,10 +3402,11 @@ Script_sections::expected_segment_count(const Layout* layout) const
// should hold the file header and program headers, if any.
Output_segment*
-Script_sections::create_segments_from_phdrs_clause(Layout* layout)
+Script_sections::create_segments_from_phdrs_clause(Layout* layout,
+ uint64_t dot_alignment)
{
this->attach_sections_using_phdrs_clause(layout);
- return this->set_phdrs_clause_addresses(layout);
+ return this->set_phdrs_clause_addresses(layout, dot_alignment);
}
// Create the segments from the PHDRS clause, and put the output
@@ -3485,7 +3500,8 @@ Script_sections::attach_sections_using_phdrs_clause(Layout* layout)
// if any.
Output_segment*
-Script_sections::set_phdrs_clause_addresses(Layout* layout)
+Script_sections::set_phdrs_clause_addresses(Layout* layout,
+ uint64_t dot_alignment)
{
Output_segment* load_seg = NULL;
for (Phdrs_elements::const_iterator p = this->phdrs_elements_->begin();
@@ -3508,6 +3524,8 @@ Script_sections::set_phdrs_clause_addresses(Layout* layout)
continue;
}
+ oseg->set_minimum_p_align(dot_alignment);
+
// The output sections should have addresses from the SECTIONS
// clause. The addresses don't have to be in order, so find the
// one with the lowest load address. Use that to set the
diff --git a/gold/script-sections.h b/gold/script-sections.h
index 725d1a2..f18b06c 100644
--- a/gold/script-sections.h
+++ b/gold/script-sections.h
@@ -232,7 +232,7 @@ class Script_sections
// Create segments.
Output_segment*
- create_segments(Layout*);
+ create_segments(Layout*, uint64_t);
// Create PT_NOTE and PT_TLS segments.
void
@@ -253,7 +253,7 @@ class Script_sections
// Create the segments from a PHDRS clause.
Output_segment*
- create_segments_from_phdrs_clause(Layout* layout);
+ create_segments_from_phdrs_clause(Layout* layout, uint64_t);
// Attach sections to segments from a PHDRS clause.
void
@@ -261,7 +261,7 @@ class Script_sections
// Set addresses of segments from a PHDRS clause.
Output_segment*
- set_phdrs_clause_addresses(Layout*);
+ set_phdrs_clause_addresses(Layout*, uint64_t);
// True if we ever saw a SECTIONS clause.
bool saw_sections_clause_;
diff --git a/gold/script.cc b/gold/script.cc
index 11e4612..a68fb38 100644
--- a/gold/script.cc
+++ b/gold/script.cc
@@ -955,7 +955,7 @@ Symbol_assignment::sized_finalize(Symbol_table* symtab, const Layout* layout,
uint64_t final_val = this->val_->eval_maybe_dot(symtab, layout, true,
is_dot_available,
dot_value, dot_section,
- &section);
+ &section, NULL);
Sized_symbol<size>* ssym = symtab->get_sized_symbol<size>(this->sym_);
ssym->set_value(final_val);
if (section != NULL)
@@ -974,7 +974,7 @@ Symbol_assignment::set_if_absolute(Symbol_table* symtab, const Layout* layout,
Output_section* val_section;
uint64_t val = this->val_->eval_maybe_dot(symtab, layout, false,
is_dot_available, dot_value,
- NULL, &val_section);
+ NULL, &val_section, NULL);
if (val_section != NULL)
return;
diff --git a/gold/script.h b/gold/script.h
index f4c3f22..3b8cb92 100644
--- a/gold/script.h
+++ b/gold/script.h
@@ -86,11 +86,14 @@ class Expression
// value is defined. If the value is absolute *RESULT_SECTION will
// be NULL. Note that the returned value is still an absolute
// value; to get a section relative value the caller must subtract
- // the section address.
+ // the section address. If RESULT_ALIGNMENT is not NULL, this sets
+ // *RESULT_ALIGNMENT to the alignment of the value of that alignment
+ // is larger than *RESULT_ALIGNMENT; this will only be non-zero if
+ // this is an ALIGN expression.
uint64_t
eval_with_dot(const Symbol_table*, const Layout*, bool check_assertions,
uint64_t dot_value, Output_section* dot_section,
- Output_section** result_section);
+ Output_section** result_section, uint64_t* result_alignment);
// Return the value of an expression which may or may not be
// permitted to refer to the dot symbol, depending on
@@ -99,7 +102,7 @@ class Expression
eval_maybe_dot(const Symbol_table*, const Layout*, bool check_assertions,
bool is_dot_available, uint64_t dot_value,
Output_section* dot_section,
- Output_section** result_section);
+ Output_section** result_section, uint64_t* result_alignment);
// Print the expression to the FILE. This is for debugging.
virtual void
diff --git a/gold/testsuite/script_test_3.sh b/gold/testsuite/script_test_3.sh
index cddb69a..d114edd 100755
--- a/gold/testsuite/script_test_3.sh
+++ b/gold/testsuite/script_test_3.sh
@@ -85,4 +85,18 @@ if test "$section_size" != "$segment_size"; then
exit 1
fi
+# At least one PT_LOAD segment should have an alignment >= 0x100000.
+found=no
+for a in `grep LOAD script_test_3.stdout | sed -e 's/^.* 0x/0x/'`; do
+ script="BEGIN { if ($a >= 0x100000) { print \"true\" } else { print \"false\" } }"
+ x=`awk "$script" < /dev/null`
+ if test "$x" = "true"; then
+ found=yes
+ fi
+done
+if test "$found" = "no"; then
+ echo "no LOAD segment has required alignment"
+ exit 1
+fi
+
exit 0
diff --git a/gold/testsuite/script_test_3.t b/gold/testsuite/script_test_3.t
index a6a655f..75d8130 100644
--- a/gold/testsuite/script_test_3.t
+++ b/gold/testsuite/script_test_3.t
@@ -35,7 +35,7 @@ SECTIONS
.tdata : { *(.tdata*) } :data :tls
.tbss : { *(.tbss*) } :data :tls
. += 0x100000;
- . = ALIGN(0x100);
+ . = ALIGN(0x100000);
.bss : { *(.bss) } :bss
}