diff options
Diffstat (limited to 'gold/symtab.h')
| -rw-r--r-- | gold/symtab.h | 64 |
1 files changed, 36 insertions, 28 deletions
diff --git a/gold/symtab.h b/gold/symtab.h index f79fc8d..c8aac26 100644 --- a/gold/symtab.h +++ b/gold/symtab.h @@ -1,6 +1,6 @@ // symtab.h -- the gold symbol table -*- C++ -*- -// Copyright 2006, 2007, 2008, 2009 Free Software Foundation, Inc. +// Copyright 2006, 2007, 2008, 2009, 2010 Free Software Foundation, Inc. // Written by Ian Lance Taylor <iant@google.com>. // This file is part of gold. @@ -308,6 +308,18 @@ class Symbol set_in_real_elf() { this->in_real_elf_ = true; } + // Return whether this symbol was defined in a section that was + // discarded from the link. This is used to control some error + // reporting. + bool + is_defined_in_discarded_section() const + { return this->is_defined_in_discarded_section_; } + + // Mark this symbol as having been defined in a discarded section. + void + set_is_defined_in_discarded_section() + { this->is_defined_in_discarded_section_ = true; } + // Return the index of this symbol in the output file symbol table. // A value of -1U means that this symbol is not going into the // output file. This starts out as zero, and is set to a non-zero @@ -383,7 +395,7 @@ class Symbol // Return whether this symbol has an entry in the PLT section. bool has_plt_offset() const - { return this->has_plt_offset_; } + { return this->plt_offset_ != -1U; } // Return the offset into the PLT section of this symbol. unsigned int @@ -397,7 +409,7 @@ class Symbol void set_plt_offset(unsigned int plt_offset) { - this->has_plt_offset_ = true; + gold_assert(plt_offset != -1U); this->plt_offset_ = plt_offset; } @@ -870,16 +882,14 @@ class Symbol // non-zero value during Layout::finalize. unsigned int dynsym_index_; - // If this symbol has an entry in the GOT section (has_got_offset_ - // is true), this holds the offset from the start of the GOT section. - // A symbol may have more than one GOT offset (e.g., when mixing - // modules compiled with two different TLS models), but will usually - // have at most one. + // The GOT section entries for this symbol. A symbol may have more + // than one GOT offset (e.g., when mixing modules compiled with two + // different TLS models), but will usually have at most one. Got_offset_list got_offsets_; - // If this symbol has an entry in the PLT section (has_plt_offset_ - // is true), then this is the offset from the start of the PLT - // section. + // If this symbol has an entry in the PLT section, then this is the + // offset from the start of the PLT section. This is -1U if there + // is no PLT entry. unsigned int plt_offset_; // Symbol type (bits 0 to 3). @@ -892,10 +902,7 @@ class Symbol unsigned int nonvis_ : 6; // The type of symbol (bits 16 to 18). Source source_ : 3; - // True if this symbol always requires special target-specific - // handling (bit 19). - bool is_target_special_ : 1; - // True if this is the default version of the symbol (bit 20). + // True if this is the default version of the symbol (bit 19). bool is_def_ : 1; // True if this symbol really forwards to another symbol. This is // used when we discover after the fact that two different entries @@ -903,37 +910,38 @@ class Symbol // never be set for a symbol found in the hash table, but may be set // for a symbol found in the list of symbols attached to an Object. // It forwards to the symbol found in the forwarders_ map of - // Symbol_table (bit 21). + // Symbol_table (bit 20). bool is_forwarder_ : 1; // True if the symbol has an alias in the weak_aliases table in - // Symbol_table (bit 22). + // Symbol_table (bit 21). bool has_alias_ : 1; // True if this symbol needs to be in the dynamic symbol table (bit - // 23). + // 22). bool needs_dynsym_entry_ : 1; - // True if we've seen this symbol in a regular object (bit 24). + // True if we've seen this symbol in a regular object (bit 23). bool in_reg_ : 1; - // True if we've seen this symbol in a dynamic object (bit 25). + // True if we've seen this symbol in a dynamic object (bit 24). bool in_dyn_ : 1; - // True if the symbol has an entry in the PLT section (bit 26). - bool has_plt_offset_ : 1; // True if this is a dynamic symbol which needs a special value in - // the dynamic symbol table (bit 27). + // the dynamic symbol table (bit 25). bool needs_dynsym_value_ : 1; - // True if there is a warning for this symbol (bit 28). + // True if there is a warning for this symbol (bit 26). bool has_warning_ : 1; // True if we are using a COPY reloc for this symbol, so that the - // real definition lives in a dynamic object (bit 29). + // real definition lives in a dynamic object (bit 27). bool is_copied_from_dynobj_ : 1; // True if this symbol was forced to local visibility by a version - // script (bit 30). + // script (bit 28). bool is_forced_local_ : 1; // True if the field u_.from_object.shndx is an ordinary section // index, not one of the special codes from SHN_LORESERVE to - // SHN_HIRESERVE (bit 31). + // SHN_HIRESERVE (bit 29). bool is_ordinary_shndx_ : 1; - // True if we've seen this symbol in a real ELF object. + // True if we've seen this symbol in a real ELF object (bit 30). bool in_real_elf_ : 1; + // True if this symbol is defined in a section which was discarded + // (bit 31). + bool is_defined_in_discarded_section_ : 1; }; // The parts of a symbol which are size specific. Using a template |