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6e09a5d065
disassembler API. Hooked this up to the ARM target so such tools as Darwin's otool(1) can now print things like branch targets for example this: blx _puts instead of this: blx #-36 And even print the expression encoded in the Mach-O relocation entried for things like this: movt r0, :upper16:((_foo-_bar)+1234) llvm-svn: 129284
87 lines
3.2 KiB
C++
87 lines
3.2 KiB
C++
//===-- llvm/MC/MCDisassembler.h - Disassembler interface -------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#ifndef MCDISASSEMBLER_H
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#define MCDISASSEMBLER_H
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#include "llvm/Support/DataTypes.h"
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#include "llvm-c/Disassembler.h"
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namespace llvm {
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class MCInst;
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class MemoryObject;
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class raw_ostream;
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class MCContext;
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struct EDInstInfo;
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/// MCDisassembler - Superclass for all disassemblers. Consumes a memory region
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/// and provides an array of assembly instructions.
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class MCDisassembler {
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public:
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/// Constructor - Performs initial setup for the disassembler.
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MCDisassembler() : GetOpInfo(0), DisInfo(0), Ctx(0) {}
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virtual ~MCDisassembler();
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/// getInstruction - Returns the disassembly of a single instruction.
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///
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/// @param instr - An MCInst to populate with the contents of the
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/// instruction.
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/// @param size - A value to populate with the size of the instruction, or
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/// the number of bytes consumed while attempting to decode
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/// an invalid instruction.
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/// @param region - The memory object to use as a source for machine code.
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/// @param address - The address, in the memory space of region, of the first
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/// byte of the instruction.
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/// @param vStream - The stream to print warnings and diagnostic messages on.
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/// @return - True if the instruction is valid; false otherwise.
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virtual bool getInstruction(MCInst& instr,
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uint64_t& size,
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const MemoryObject ®ion,
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uint64_t address,
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raw_ostream &vStream) const = 0;
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/// getEDInfo - Returns the enhanced instruction information corresponding to
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/// the disassembler.
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///
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/// @return - An array of instruction information, with one entry for
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/// each MCInst opcode this disassembler returns.
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/// NULL if there is no info for this target.
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virtual EDInstInfo *getEDInfo() const { return (EDInstInfo*)0; }
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private:
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//
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// Hooks for symbolic disassembly via the public 'C' interface.
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//
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// The function to get the symbolic information for operands.
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LLVMOpInfoCallback GetOpInfo;
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// The pointer to the block of symbolic information for above call back.
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void *DisInfo;
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// The assembly context for creating symbols and MCExprs in place of
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// immediate operands when there is symbolic information.
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MCContext *Ctx;
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public:
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void setupForSymbolicDisassembly(LLVMOpInfoCallback getOpInfo,
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void *disInfo,
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MCContext *ctx) {
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GetOpInfo = getOpInfo;
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DisInfo = disInfo;
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Ctx = ctx;
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}
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LLVMOpInfoCallback getLLVMOpInfoCallback() const { return GetOpInfo; }
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void *getDisInfoBlock() const { return DisInfo; }
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MCContext *getMCContext() const { return Ctx; }
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};
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} // namespace llvm
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#endif
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