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authorIan Lance Taylor <iant@google.com>2006-11-06 22:46:08 +0000
committerIan Lance Taylor <iant@google.com>2006-11-06 22:46:08 +0000
commitf6ce93d6e999d1a0c450c5e71c5b3468e6217f0a (patch)
tree945ecd482d35d1c2a590645ef3d5f41fb83dcc4b /gold/reloc.h
parent8d9455b422d98d97f090923445aa2680e6882f20 (diff)
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Split Object into Dynobj and Relobj, incorporate elfcpp swapping changes.
Diffstat (limited to 'gold/reloc.h')
-rw-r--r--gold/reloc.h352
1 files changed, 19 insertions, 333 deletions
diff --git a/gold/reloc.h b/gold/reloc.h
index f8f07b8..9b0518e 100644
--- a/gold/reloc.h
+++ b/gold/reloc.h
@@ -10,7 +10,7 @@
namespace gold
{
-class Object;
+class Relobj;
class Read_relocs_data;
class Stringpool;
class Layout;
@@ -25,7 +25,7 @@ class Read_relocs : public Task
// SYMTAB_LOCK is used to lock the symbol table. BLOCKER should be
// unblocked when the Scan_relocs task completes.
Read_relocs(const General_options& options, Symbol_table* symtab,
- Layout* layout, Object* object, Task_token* symtab_lock,
+ Layout* layout, Relobj* object, Task_token* symtab_lock,
Task_token* blocker)
: options_(options), symtab_(symtab), layout_(layout), object_(object),
symtab_lock_(symtab_lock), blocker_(blocker)
@@ -46,7 +46,7 @@ class Read_relocs : public Task
const General_options& options_;
Symbol_table* symtab_;
Layout* layout_;
- Object* object_;
+ Relobj* object_;
Task_token* symtab_lock_;
Task_token* blocker_;
};
@@ -60,7 +60,7 @@ class Scan_relocs : public Task
// SYMTAB_LOCK is used to lock the symbol table. BLOCKER should be
// unblocked when the task completes.
Scan_relocs(const General_options& options, Symbol_table* symtab,
- Layout* layout, Object* object, Read_relocs_data* rd,
+ Layout* layout, Relobj* object, Read_relocs_data* rd,
Task_token* symtab_lock, Task_token* blocker)
: options_(options), symtab_(symtab), layout_(layout), object_(object),
rd_(rd), symtab_lock_(symtab_lock), blocker_(blocker)
@@ -83,7 +83,7 @@ class Scan_relocs : public Task
const General_options& options_;
Symbol_table* symtab_;
Layout* layout_;
- Object* object_;
+ Relobj* object_;
Read_relocs_data* rd_;
Task_token* symtab_lock_;
Task_token* blocker_;
@@ -95,7 +95,7 @@ class Relocate_task : public Task
{
public:
Relocate_task(const General_options& options, const Symbol_table* symtab,
- const Layout* layout, Object* object, Output_file* of,
+ const Layout* layout, Relobj* object, Output_file* of,
Task_token* final_blocker)
: options_(options), symtab_(symtab), layout_(layout), object_(object),
of_(of), final_blocker_(final_blocker)
@@ -118,327 +118,11 @@ class Relocate_task : public Task
const General_options& options_;
const Symbol_table* symtab_;
const Layout* layout_;
- Object* object_;
+ Relobj* object_;
Output_file* of_;
Task_token* final_blocker_;
};
-// Integer swapping routines used by relocation functions. FIXME:
-// Maybe these should be more general, and/or shared with elfcpp.
-
-// Endian simply indicates whether the host is big endian or not,
-// based on the results of the configure script.
-
-struct Endian
-{
- public:
- // Used for template specializations.
-#ifdef WORDS_BIGENDIAN
- static const bool host_big_endian = true;
-#else
- static const bool host_big_endian = false;
-#endif
-};
-
-// Valtype_base is a template based on size (8, 16, 32, 64) which
-// defines a typedef Valtype for the unsigned integer of the specified
-// size.
-
-template<int size>
-struct Valtype_base;
-
-template<>
-struct Valtype_base<8>
-{
- typedef unsigned char Valtype;
-};
-
-template<>
-struct Valtype_base<16>
-{
- typedef uint16_t Valtype;
-};
-
-template<>
-struct Valtype_base<32>
-{
- typedef uint32_t Valtype;
-};
-
-template<>
-struct Valtype_base<64>
-{
- typedef uint64_t Valtype;
-};
-
-// Convert_host is a template based on size and on whether the host
-// and target have the same endianness. It defines the type Valtype,
-// and defines a function convert_host which takes an argument of type
-// Valtype and swaps it if the host and target have different
-// endianness.
-
-template<int size, bool same_endian>
-struct Convert_host;
-
-template<int size>
-struct Convert_host<size, true>
-{
- typedef typename Valtype_base<size>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return v; }
-};
-
-template<>
-struct Convert_host<8, false>
-{
- typedef Valtype_base<8>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return v; }
-};
-
-template<>
-struct Convert_host<16, false>
-{
- typedef Valtype_base<16>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return bswap_16(v); }
-};
-
-template<>
-struct Convert_host<32, false>
-{
- typedef Valtype_base<32>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return bswap_32(v); }
-};
-
-template<>
-struct Convert_host<64, false>
-{
- typedef Valtype_base<64>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return bswap_64(v); }
-};
-
-// Convert is a template based on size and on whether we have a big
-// endian target. It defines Valtype and convert_host like
-// Convert_host. That is, it is just like Convert_host except in the
-// meaning of the second template parameter.
-
-template<int size, bool big_endian>
-struct Convert
-{
- typedef typename Valtype_base<size>::Valtype Valtype;
-
- static inline Valtype
- convert_host(Valtype v)
- { return Convert_host<size, big_endian == Endian::host_big_endian>
- ::convert_host(v); }
-};
-
-// Swap is a template based on size and on whether the target is big
-// endian. It defines the type Valtype and the functions readval and
-// writeval. The functions read and write values of the appropriate
-// size out of buffers, swapping them if necessary.
-
-template<int size, bool big_endian>
-struct Swap
-{
- typedef typename Valtype_base<size>::Valtype Valtype;
-
- static inline Valtype
- readval(const Valtype* wv)
- { return Convert<size, big_endian>::convert_host(*wv); }
-
- static inline void
- writeval(Valtype* wv, Valtype v)
- { *wv = Convert<size, big_endian>::convert_host(v); }
-};
-
-// Swap_unaligned is a template based on size and on whether the
-// target is big endian. It defines the type Valtype and the
-// functions readval_unaligned and writeval_unaligned. The functions
-// read and write values of the appropriate size out of buffers which
-// may be misaligned.
-
-template<int size, bool big_endian>
-class Swap_unaligned;
-
-template<bool big_endian>
-class Swap_unaligned<8, big_endian>
-{
-public:
- typedef typename Valtype_base<8>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- { return *wv; }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- { *wv = v; }
-};
-
-template<>
-class Swap_unaligned<16, false>
-{
-public:
- typedef Valtype_base<16>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return (wv[1] << 8) | wv[0];
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[1] = v >> 8;
- wv[0] = v;
- }
-};
-
-template<>
-class Swap_unaligned<16, true>
-{
-public:
- typedef Valtype_base<16>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return (wv[0] << 8) | wv[1];
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[0] = v >> 8;
- wv[1] = v;
- }
-};
-
-template<>
-class Swap_unaligned<32, false>
-{
-public:
- typedef Valtype_base<32>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return (wv[3] << 24) | (wv[2] << 16) | (wv[1] << 8) | wv[0];
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[3] = v >> 24;
- wv[2] = v >> 16;
- wv[1] = v >> 8;
- wv[0] = v;
- }
-};
-
-template<>
-class Swap_unaligned<32, true>
-{
-public:
- typedef Valtype_base<32>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return (wv[0] << 24) | (wv[1] << 16) | (wv[2] << 8) | wv[3];
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[0] = v >> 24;
- wv[1] = v >> 16;
- wv[2] = v >> 8;
- wv[3] = v;
- }
-};
-
-template<>
-class Swap_unaligned<64, false>
-{
-public:
- typedef Valtype_base<64>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return ((static_cast<Valtype>(wv[7]) << 56)
- | (static_cast<Valtype>(wv[6]) << 48)
- | (static_cast<Valtype>(wv[5]) << 40)
- | (static_cast<Valtype>(wv[4]) << 32)
- | (static_cast<Valtype>(wv[3]) << 24)
- | (static_cast<Valtype>(wv[2]) << 16)
- | (static_cast<Valtype>(wv[1]) << 8)
- | static_cast<Valtype>(wv[0]));
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[7] = v >> 56;
- wv[6] = v >> 48;
- wv[5] = v >> 40;
- wv[4] = v >> 32;
- wv[3] = v >> 24;
- wv[2] = v >> 16;
- wv[1] = v >> 8;
- wv[0] = v;
- }
-};
-
-template<>
-class Swap_unaligned<64, true>
-{
-public:
- typedef Valtype_base<64>::Valtype Valtype;
-
- static inline Valtype
- readval_unaligned(const unsigned char* wv)
- {
- return ((static_cast<Valtype>(wv[0]) << 56)
- | (static_cast<Valtype>(wv[1]) << 48)
- | (static_cast<Valtype>(wv[2]) << 40)
- | (static_cast<Valtype>(wv[3]) << 32)
- | (static_cast<Valtype>(wv[4]) << 24)
- | (static_cast<Valtype>(wv[5]) << 16)
- | (static_cast<Valtype>(wv[6]) << 8)
- | static_cast<Valtype>(wv[7]));
- }
-
- static inline void
- writeval_unaligned(unsigned char* wv, Valtype v)
- {
- wv[7] = v >> 56;
- wv[6] = v >> 48;
- wv[5] = v >> 40;
- wv[4] = v >> 32;
- wv[3] = v >> 24;
- wv[2] = v >> 16;
- wv[1] = v >> 8;
- wv[0] = v;
- }
-};
-
// Standard relocation routines which are used on many targets. Here
// SIZE and BIG_ENDIAN refer to the target, not the relocation type.
@@ -450,25 +134,27 @@ private:
// VALSIZE is the size of the value.
template<int valsize>
static inline void
- rel(unsigned char* view, typename Swap<valsize, big_endian>::Valtype value)
+ rel(unsigned char* view,
+ typename elfcpp::Swap<valsize, big_endian>::Valtype value)
{
- typedef typename Swap<valsize, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
- Valtype x = Swap<valsize, big_endian>::readval(wv);
- Swap<valsize, big_endian>::writeval(wv, x + value);
+ Valtype x = elfcpp::Swap<valsize, big_endian>::readval(wv);
+ elfcpp::Swap<valsize, big_endian>::writeval(wv, x + value);
}
// Do a simple PC relative relocation with the addend in the section
// contents. VALSIZE is the size of the value.
template<int valsize>
static inline void
- pcrel(unsigned char* view, typename Swap<valsize, big_endian>::Valtype value,
+ pcrel(unsigned char* view,
+ typename elfcpp::Swap<valsize, big_endian>::Valtype value,
typename elfcpp::Elf_types<size>::Elf_Addr address)
{
- typedef typename Swap<valsize, big_endian>::Valtype Valtype;
+ typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
- Valtype x = Swap<valsize, big_endian>::readval(wv);
- Swap<valsize, big_endian>::writeval(wv, x + value - address);
+ Valtype x = elfcpp::Swap<valsize, big_endian>::readval(wv);
+ elfcpp::Swap<valsize, big_endian>::writeval(wv, x + value - address);
}
typedef Relocate_functions<size, big_endian> This;
@@ -528,7 +214,7 @@ public:
// Do a simple 64-bit REL relocation with the addend in the section
// contents.
static inline void
- rel64(unsigned char* view, elfcpp::Elf_Word value)
+ rel64(unsigned char* view, elfcpp::Elf_Xword value)
{
This::template rel<64>(view, value);
}
@@ -536,7 +222,7 @@ public:
// Do a simple 64-bit PC relative REL relocation with the addend in
// the section contents.
static inline void
- pcrel64(unsigned char* view, elfcpp::Elf_Word value,
+ pcrel64(unsigned char* view, elfcpp::Elf_Xword value,
typename elfcpp::Elf_types<size>::Elf_Addr address)
{
This::template pcrel<64>(view, value, address);