[llvm-commits] CVS: llvm/lib/Support/Disassembler.cpp

[Anton Korobeynikov]

Changes in directory llvm/lib/Support:

Disassembler.cpp added (r1.1)
---
Log message:

Adding disassembler interface and external hook to udis86 library.


---
Diffs of the changes:  (+53 -0)

 Disassembler.cpp |   53 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 files changed, 53 insertions(+)


Index: llvm/lib/Support/Disassembler.cpp
diff -c /dev/null llvm/lib/Support/Disassembler.cpp:1.1
*** /dev/null	Fri Jan 19 11:25:27 2007
--- llvm/lib/Support/Disassembler.cpp	Fri Jan 19 11:25:17 2007
***************
*** 0 ****
--- 1,53 ----
+ //===- lib/Support/Disassembler.cpp -----------------------------*- C++ -*-===//
+ //
+ //                     The LLVM Compiler Infrastructure
+ //
+ // This file was developed by Anton Korobeynikov and is distributed under the
+ // University of Illinois Open Source License. See LICENSE.TXT for details.
+ //
+ //===----------------------------------------------------------------------===//
+ //
+ // This file implements the necessary glue to call external disassembler
+ // libraries.
+ //
+ //===----------------------------------------------------------------------===//
+ 
+ #include "llvm/Config/config.h"
+ #include "llvm/Support/Disassembler.h"
+ 
+ #include <cassert>
+ #include <iomanip>
+ #include <string>
+ #include <sstream>
+ 
+ #if USE_UDIS86
+ #include <udis86.h>
+ #endif
+ 
+ using namespace llvm;
+ 
+ std::string llvm::disassembleBuffer(uint8_t* start, size_t length,
+                               Disassembler::Type type, uint64_t pc) {
+   std::stringstream res;
+   
+   if (type == Disassembler::X86_32 || type == Disassembler::X86_64) {
+ #if USE_UDIS86
+     ud_t ud_obj;
+    
+     ud_init(&ud_obj);
+     ud_set_input_buffer(&ud_obj, start, length);
+     ud_set_mode(&ud_obj, (type == Disassembler::X86_32 ? 32 : 64));
+     ud_set_pc(&ud_obj, pc);
+     ud_set_syntax(&ud_obj, UD_SYN_ATT);
+ 
+     res << std::setbase(16)
+         << std::setw((type == Disassembler::X86_32 ? 8 : 16));
+ 
+     while (ud_disassemble(&ud_obj)) {
+       res << ud_insn_off(&ud_obj) << ":\t" << ud_insn_asm(&ud_obj) << "\n";
+     }
+ #endif
+   }
+ 
+   return res.str();
+ }