Basic runtime dynamic loading capabilities added to ELFObjectFile, implemented

in a subclass named DyldELFObject. This class supports rebasing the object file
it represents by re-mapping section addresses to the actual memory addresses
the object was placed in. This is required for MC-JIT implementation on ELF with
debugging support.

Patch reviewed on llvm-commits.

Developed together with Ashok Thirumurthi and Andrew Kaylor.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@148653 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 12 insertions, 0 deletions

diff --git a/include/llvm/Support/Endian.h b/include/llvm/Support/Endian.h
index af1b506..733ab75 100644
--- a/include/llvm/Support/Endian.h
+++ b/include/llvm/Support/Endian.h
@@ -98,6 +98,9 @@ public:
   operator value_type() const {
     return endian::read_le<value_type, unaligned>(Value);
   }
+  void operator=(value_type newValue) {
+    endian::write_le<value_type, unaligned>((void *)&Value, newValue);
+  }
 private:
   uint8_t Value[sizeof(value_type)];
 };
@@ -108,6 +111,9 @@ public:
   operator value_type() const {
     return endian::read_be<value_type, unaligned>(Value);
   }
+  void operator=(value_type newValue) {
+    endian::write_be<value_type, unaligned>((void *)&Value, newValue);
+  }
 private:
   uint8_t Value[sizeof(value_type)];
 };
@@ -118,6 +124,9 @@ public:
   operator value_type() const {
     return endian::read_le<value_type, aligned>(&Value);
   }
+  void operator=(value_type newValue) {
+    endian::write_le<value_type, aligned>((void *)&Value, newValue);
+  }
 private:
   value_type Value;
 };
@@ -128,6 +137,9 @@ public:
   operator value_type() const {
     return endian::read_be<value_type, aligned>(&Value);
   }
+  void operator=(value_type newValue) {
+    endian::write_be<value_type, aligned>((void *)&Value, newValue);
+  }
 private:
   value_type Value;
 };