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From Andrew Chatham: add signedrel<>, rel32s and friends.

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This commit is contained in:
Ian Lance Taylor
2007-09-28 06:00:26 +00:00
parent 8be878263a
commit dfbba8f432
1 changed files with 40 additions and 0 deletions
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40
gold/reloc.h
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@@ -192,6 +192,25 @@ private:
elfcpp::Swap<valsize, big_endian>::writeval(wv, x);
}
// Like rel(), but sign-extends the value to SIZE.
template<int valsize>
static inline void
signedrel(unsigned char* view,
const Sized_relobj<size, big_endian>* object,
const Symbol_value<size>* psymval)
{
typedef typename elfcpp::Swap<valsize, big_endian>::Valtype Valtype;
typedef typename elfcpp::Swap<size, big_endian>::Valtype Sizetype;
Valtype* wv = reinterpret_cast<Valtype*>(view);
Valtype x = elfcpp::Swap<valsize, big_endian>::readval(wv);
// Fancy formula to sign-extend x to size.
const Sizetype mask = 1U << (sizeof(valsize) * 8 - 1);
Sizetype sign_extended_x = x;
sign_extended_x = (sign_extended_x ^ mask) - mask;
x = psymval->value(object, sign_extended_x);
elfcpp::Swap<valsize, big_endian>::writeval(wv, x);
}
// Do a simple PC relative relocation with the addend in the section
// contents. VALSIZE is the size of the value.
template<int valsize>
@@ -238,6 +257,13 @@ public:
const Symbol_value<size>* psymval)
{ This::template rel<8>(view, object, psymval); }
// Do an 8-bit REL relocation, sign extending the addend to SIZE.
static inline void
rel8s(unsigned char* view,
const Sized_relobj<size, big_endian>* object,
const Symbol_value<size>* psymval)
{ This::template signedrel<8>(view, object, psymval); }
// Do a simple 8-bit PC relative relocation with the addend in the
// section contents.
static inline void
@@ -264,6 +290,13 @@ public:
const Symbol_value<size>* psymval)
{ This::template rel<16>(view, object, psymval); }
// Do a 16-bit REL relocation, sign extending the addend to SIZE.
static inline void
rel16s(unsigned char* view,
const Sized_relobj<size, big_endian>* object,
const Symbol_value<size>* psymval)
{ This::template signedrel<16>(view, object, psymval); }
// Do a simple 32-bit PC relative REL relocation with the addend in
// the section contents.
static inline void
@@ -290,6 +323,13 @@ public:
const Symbol_value<size>* psymval)
{ This::template rel<32>(view, object, psymval); }
// Do a 32-bit REL relocation, sign extending the addend to SIZE.
static inline void
rel32s(unsigned char* view,
const Sized_relobj<size, big_endian>* object,
const Symbol_value<size>* psymval)
{ This::template signedrel<32>(view, object, psymval); }
// Do a simple 32-bit PC relative REL relocation with the addend in
// the section contents.
static inline void