[llvm-commits] CVS: llvm/include/llvm/CodeGen/MachORelocation.h

[Bill Wendling]

Changes in directory llvm/include/llvm/CodeGen:

MachORelocation.h added (r1.1)
---
Log message:

New file for the MachORelocation structure. It doesn't have to be tied to the
MachOWriter.h file.


---
Diffs of the changes:  (+54 -0)

 MachORelocation.h |   54 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 54 insertions(+)


Index: llvm/include/llvm/CodeGen/MachORelocation.h
diff -c /dev/null llvm/include/llvm/CodeGen/MachORelocation.h:1.1
*** /dev/null	Fri Feb  2 20:36:27 2007
--- llvm/include/llvm/CodeGen/MachORelocation.h	Fri Feb  2 20:36:17 2007
***************
*** 0 ****
--- 1,54 ----
+ //=== MachORelocation.h - Mach-O Relocation Info ----------------*- C++ -*-===//
+ //
+ //                     The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Bill Wendling and is distributed under the
+ // University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file defines the MachORelocation class.
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ 
+ #ifndef LLVM_CODEGEN_MACHO_RELOCATION_H
+ #define LLVM_CODEGEN_MACHO_RELOCATION_H
+ 
+ namespace llvm {
+ 
+   /// MachORelocation - This struct contains information about each relocation
+   /// that needs to be emitted to the file.
+   /// see <mach-o/reloc.h>
+   class MachORelocation {
+     uint32_t r_address;   // offset in the section to what is being  relocated
+     uint32_t r_symbolnum; // symbol index if r_extern == 1 else section index
+     bool     r_pcrel;     // was relocated pc-relative already
+     uint8_t  r_length;    // length = 2 ^ r_length
+     bool     r_extern;    // 
+     uint8_t  r_type;      // if not 0, machine-specific relocation type.
+     bool     r_scattered; // 1 = scattered, 0 = non-scattered
+     int32_t  r_value;     // the value the item to be relocated is referring
+                           // to.
+   public:      
+     uint32_t getPackedFields() const {
+       if (r_scattered)
+         return (1 << 31) | (r_pcrel << 30) | ((r_length & 3) << 28) | 
+           ((r_type & 15) << 24) | (r_address & 0x00FFFFFF);
+       else
+         return (r_symbolnum << 8) | (r_pcrel << 7) | ((r_length & 3) << 5) |
+           (r_extern << 4) | (r_type & 15);
+     }
+     uint32_t getAddress() const { return r_scattered ? r_value : r_address; }
+     uint32_t getRawAddress() const { return r_address; }
+ 
+     MachORelocation(uint32_t addr, uint32_t index, bool pcrel, uint8_t len,
+                     bool ext, uint8_t type, bool scattered = false, 
+                     int32_t value = 0) : 
+       r_address(addr), r_symbolnum(index), r_pcrel(pcrel), r_length(len),
+       r_extern(ext), r_type(type), r_scattered(scattered), r_value(value) {}
+   };
+ 
+ } // end llvm namespace
+ 
+ #endif // LLVM_CODEGEN_MACHO_RELOCATION_H