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>
78 lines
3.8 KiB
C++
78 lines
3.8 KiB
C++
/* ###
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* IP: GHIDRA
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef __GHIDRA_CONTEXT_HH__
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#define __GHIDRA_CONTEXT_HH__
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/// \file ghidra_context.hh
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/// \brief Obtaining context information from a Ghidra client
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#include "globalcontext.hh"
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#include "ghidra_arch.hh"
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namespace ghidra {
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/// \brief An implementation of a ContextDatabase obtaining context information via a Ghidra client
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///
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/// This only implements the tracked register parts of the interface. In fact, this only implements
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/// the single method getTrackedSet(). Other methods that get or set the low-level (disassembly)
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/// context variables will throw an exception. The low-level context is only needed by the
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/// Sleigh disassembly engine, which is being provided by the Ghidra client in this use case.
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class ContextGhidra : public ContextDatabase {
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ArchitectureGhidra *glb; ///< Architecture and connection to the Ghidra client
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mutable TrackedSet cache; ///< A cache of previously fetched tracked registers.
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virtual ContextBitRange &getVariable(const string &nm) {
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throw LowlevelError("getVariable should not be called for GHIDRA"); }
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virtual const ContextBitRange &getVariable(const string &nm) const {
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throw LowlevelError("getVariable should not be called for GHIDRA"); }
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virtual void getRegionForSet(vector<uintm *> &res,const Address &addr1,const Address &addr2,int4 num,uintm mask) {
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throw LowlevelError("getRegionForSet should not be called for GHIDRA"); }
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virtual void getRegionToChangePoint(vector<uintm *> &res,const Address &addr,int4 num,uintm mask) {
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throw LowlevelError("getRegionToChangePoint should not be called for GHIDRA"); }
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virtual const uintm *getDefaultValue(void) const {
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throw LowlevelError("getDefaultValue should not be called for GHIDRA"); }
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virtual uintm *getDefaultValue(void) {
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throw LowlevelError("getDefaultValue should not be called for GHIDRA"); }
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public:
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ContextGhidra(ArchitectureGhidra *g) { glb = g; } ///< Construct with a specific client
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virtual ~ContextGhidra(void) {}
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// Routines that are actually implemented
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virtual const TrackedSet &getTrackedSet(const Address &addr) const;
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// Ignored routines (taken care of by GHIDRA)
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virtual void decode(Decoder &decoder);
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virtual void decodeFromSpec(Decoder &decoder);
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// Unimplemented routines (should never be called)
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virtual int getContextSize(void) const {
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throw LowlevelError("getContextSize should not be called for GHIDRA"); }
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virtual const uintm *getContext(const Address &addr) const {
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throw LowlevelError("getContext should not be called for GHIDRA"); }
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virtual const uintm *getContext(const Address &addr,uintb &first,uintb &last) const {
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throw LowlevelError("getContext should not be called for GHIDRA"); }
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virtual void registerVariable(const string &nm,int4 sbit,int4 ebit) {
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throw LowlevelError("registerVariable should not be called for GHIDRA"); }
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virtual void encode(Encoder &encoder) const {
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throw LowlevelError("context::encode should not be called for GHIDRA"); }
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virtual TrackedSet &createSet(const Address &addr1,const Address &addr2) {
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throw LowlevelError("createSet should not be called for GHIDRA"); }
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virtual TrackedSet &getTrackedDefault(void) {
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throw LowlevelError("getTrackedDefault should not be called for GHIDRA"); }
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};
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} // End namespace ghidra
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#endif
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