5152d0c9f7
Foundation for replacing fold's dead/abstract binary encoder with a real
SSA P-Code frontend. Verified root-cause gap: serializeBinaryIR() emits only
data-discovery nodes (sections/strings/imports/exports); the control-flow
BinaryExprKind values (BasicBlock/CallSite/...) are never constructed, so the
Z3-BB encoder's encodable filter is always empty and encodeBinaryBBs never
runs — hence 0 binary Z3 findings. The P-Code pipeline supersedes that path.
Phase 0 — docs/internal/ghidra-pcode-integration-research.md: P-Code opcode
core, the decompiler C++ embedding API (LoadImage/SleighArchitecture/Funcdata),
the CORE+DECCORE+SLEIGH source sets, no-bison finding, and pypcode as build
reference.
Phase 1 — vendored Ghidra decompiler at pinned commit (Ghidra_12.1_build,
7e89d94e34...) under third_party/ghidra-decompiler/ (cpp + AArch64 specs +
Apache-2.0 LICENSE + VENDOR.md + .gitignore for build artifacts). Validated by
hand on this clang-21/macOS toolchain:
- full SSA engine (CORE+DECCORE+SLEIGH, 80 files incl. heritage/funcdata/
action) compiles clean, -std=c++11 -O2, NO BFD, NO bison (generated
parsers are committed upstream; ruleparse isn't in the lib set);
- sleigh compiler builds; AArch64 .slaspec -> .sla compiles;
- tools/pcode_dump.cpp (custom LoadImage, no BFD) lifts the real arm64
sym._div_by_zero_direct to correct P-Code: `mov w9,#0 -> COPY(const 0)`,
`sdiv -> INT_SDIV(w8,w9)` — divisor zero-ness explicit in the data flow,
so the Phase-3 encoder proves div-by-zero trivially, multi-arch.
Not yet meson-wired (next step) and no fold-side IR/encoder yet (Phase 2-3);
this commit is the validated vendor + smoke tool.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
94 lines
3 KiB
C++
94 lines
3 KiB
C++
/* ###
|
|
* IP: GHIDRA
|
|
* NOTE: Interface to GNU BFD library which is GPL 3
|
|
*
|
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
|
* you may not use this file except in compliance with the License.
|
|
* You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
* See the License for the specific language governing permissions and
|
|
* limitations under the License.
|
|
*/
|
|
// Use the GNU bfd library to manipulate a load image
|
|
|
|
#ifndef __LOADIMAGE_BFD_HH__
|
|
#define __LOADIMAGE_BFD_HH__
|
|
|
|
#include "loadimage.hh"
|
|
|
|
// bfd.h requires PACKAGE/PACKAGE_VERSION to be defined
|
|
// https://sourceware.org/bugzilla/show_bug.cgi?id=14243
|
|
|
|
#ifndef PACKAGE
|
|
#define PACKAGE
|
|
#define __LOADIMAGE_BFD__DEFINED_PACKAGE
|
|
#endif
|
|
|
|
#ifndef PACKAGE_VERSION
|
|
#define PACKAGE_VERSION
|
|
#define __LOADIMAGE_BFD__DEFINED_PACKAGE_VERSION
|
|
#endif
|
|
|
|
#include <bfd.h>
|
|
|
|
#ifdef __LOADIMAGE_BFD__DEFINED_PACKAGE
|
|
#undef PACKAGE
|
|
#undef __LOADIMAGE_BFD__DEFINED_PACKAGE
|
|
#endif
|
|
|
|
#ifdef __LOADIMAGE_BFD__DEFINED_PACKAGE_VERSION
|
|
#undef PACKAGE_VERSION
|
|
#undef __LOADIMAGE_BFD__DEFINED_PACKAGE_VERSION
|
|
#endif
|
|
|
|
namespace ghidra {
|
|
|
|
struct ImportRecord {
|
|
string dllname;
|
|
string funcname;
|
|
int ordinal;
|
|
Address address;
|
|
Address thunkaddress;
|
|
};
|
|
|
|
class LoadImageBfd : public LoadImage {
|
|
static int4 bfdinit; // Is the library (globally) initialized
|
|
string target; // File format (supported by BFD)
|
|
bfd *thebfd;
|
|
AddrSpace *spaceid; // We need to map space id to segments but since
|
|
// we are currently ignoring segments anyway...
|
|
uintb bufoffset; // Starting offset of byte buffer
|
|
uint4 bufsize; // Number of bytes in the buffer
|
|
uint1 *buffer; // The actual buffer
|
|
mutable asymbol **symbol_table;
|
|
mutable long number_of_symbols;
|
|
mutable long cursymbol;
|
|
mutable asection *secinfoptr;
|
|
asection *findSection(uintb offset,uintb &ssize) const; // Find section containing given offset
|
|
void advanceToNextSymbol(void) const;
|
|
public:
|
|
LoadImageBfd(const string &f,const string &t);
|
|
void attachToSpace(AddrSpace *id) { spaceid = id; }
|
|
void open(void); // Open any descriptors
|
|
void close(void); // Close any descriptor
|
|
void getImportTable(vector<ImportRecord> &irec) { throw LowlevelError("Not implemented"); }
|
|
virtual ~LoadImageBfd(void);
|
|
virtual void loadFill(uint1 *ptr,int4 size,const Address &addr); // Load a chunk of image
|
|
virtual void openSymbols(void) const;
|
|
virtual void closeSymbols(void) const;
|
|
virtual bool getNextSymbol(LoadImageFunc &record) const;
|
|
virtual void openSectionInfo(void) const;
|
|
virtual void closeSectionInfo(void) const;
|
|
virtual bool getNextSection(LoadImageSection &sec) const;
|
|
virtual void getReadonly(RangeList &list) const;
|
|
virtual string getArchType(void) const;
|
|
virtual void adjustVma(long adjust);
|
|
};
|
|
|
|
} // End namespace ghidra
|
|
#endif
|