[llvm-commits] CVS: llvm/include/llvm/CodeGen/MachORelocation.h
Bill Wendling
isanbard at gmail.com
Fri Feb 2 18:36:33 PST 2007
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
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