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| author | Ian Lance Taylor <ian@airs.com> | 2009-11-05 06:24:39 +0000 |
|---|---|---|
| committer | Ian Lance Taylor <ian@airs.com> | 2009-11-05 06:24:39 +0000 |
| commit | 594c8e5ede2a93362f335a97389eaadac17ec204 (patch) | |
| tree | f6fa13b594ad3af2539139a534d3645daefb4fbf /gold/object.h | |
| parent | 946ef19679549c1751ca5c3a963f48c21112e19b (diff) | |
| download | gdb-594c8e5ede2a93362f335a97389eaadac17ec204.zip gdb-594c8e5ede2a93362f335a97389eaadac17ec204.tar.gz gdb-594c8e5ede2a93362f335a97389eaadac17ec204.tar.bz2 | |
PR 10880
* object.h (class Object): Add is_needed and set_is_needed
methods. Add is_needed_ field. Make bool fields into bitfields.
* symtab.cc (Symbol_table::set_dynsym_indexes): If a symbol is
defined in a dynamic object and referenced by a regular object,
set is_needed for the dynamic object.
* layout.cc (Layout::finish_dynamic_section): Don't add DT_NEEDED
if the file is marked with as_needed and it is not needed.
Diffstat (limited to 'gold/object.h')
| -rw-r--r-- | gold/object.h | 33 |
1 files changed, 25 insertions, 8 deletions
diff --git a/gold/object.h b/gold/object.h index 558e456..187a101 100644 --- a/gold/object.h +++ b/gold/object.h @@ -195,8 +195,8 @@ class Object Object(const std::string& name, Input_file* input_file, bool is_dynamic, off_t offset = 0) : name_(name), input_file_(input_file), offset_(offset), shnum_(-1U), - is_dynamic_(is_dynamic), uses_split_stack_(false), - has_no_split_stack_(false), xindex_(NULL), no_export_(false) + is_dynamic_(is_dynamic), is_needed_(false), uses_split_stack_(false), + has_no_split_stack_(false), no_export_(false), xindex_(NULL) { input_file->file().add_object(); } virtual ~Object() @@ -217,6 +217,19 @@ class Object is_dynamic() const { return this->is_dynamic_; } + // Return whether this object is needed--true if it is a dynamic + // object which defines some symbol referenced by a regular object. + // We keep the flag here rather than in Dynobj for convenience when + // setting it. + bool + is_needed() const + { return this->is_needed_; } + + // Record that this object is needed. + void + set_is_needed() + { this->is_needed_ = true; } + // Return whether this object was compiled with -fsplit-stack. bool uses_split_stack() const @@ -589,17 +602,21 @@ class Object // Number of input sections. unsigned int shnum_; // Whether this is a dynamic object. - bool is_dynamic_; + bool is_dynamic_ : 1; + // Whether this object is needed. This is only set for dynamic + // objects, and means that the object defined a symbol which was + // used by a reference from a regular object. + bool is_needed_ : 1; // Whether this object was compiled with -fsplit-stack. - bool uses_split_stack_; + bool uses_split_stack_ : 1; // Whether this object contains any functions compiled with the // no_split_stack attribute. - bool has_no_split_stack_; - // Many sections for objects with more than SHN_LORESERVE sections. - Xindex* xindex_; + bool has_no_split_stack_ : 1; // True if exclude this object from automatic symbol export. // This is used only for archive objects. - bool no_export_; + bool no_export_ : 1; + // Many sections for objects with more than SHN_LORESERVE sections. + Xindex* xindex_; }; // A regular object (ET_REL). This is an abstract base class itself. |