| """ |
| LLDB Helpers for working with the swift compiler. |
| |
| Load into LLDB with 'command script import /path/to/lldbToolBox.py' |
| |
| This will also import LLVM data formatters as well, assuming that llvm is next |
| to the swift checkout. |
| """ |
| |
| import os |
| import subprocess |
| import tempfile |
| |
| REPO_BASE = os.path.abspath(os.path.join(__file__, os.pardir, os.pardir, |
| os.pardir, os.pardir)) |
| SWIFT_REPO = os.path.join(REPO_BASE, "swift") |
| LLVM_REPO = os.path.join(REPO_BASE, "llvm") |
| LLVM_DATAFORMATTER_PATH = os.path.join(LLVM_REPO, "utils", |
| "lldbDataFormatters.py") |
| |
| |
| def import_llvm_dataformatters(debugger): |
| if not os.access(LLVM_DATAFORMATTER_PATH, os.F_OK): |
| print("WARNING! Could not find LLVM data formatters!") |
| return |
| cmd = 'command script import {}'.format(LLVM_DATAFORMATTER_PATH) |
| debugger.HandleCommand(cmd) |
| print("Loaded LLVM data formatters.") |
| |
| |
| VIEWCFG_PATH = os.path.join(SWIFT_REPO, "utils", "viewcfg") |
| BLOCKIFYASM_PATH = os.path.join(SWIFT_REPO, "utils", "dev-scripts", |
| "blockifyasm") |
| |
| |
| def create_swift_disassemble_viewcfg(debugger, command, exec_ctx, result, |
| internal_dict): |
| """ |
| This function disassembles the current assembly frame into a temporary file |
| and then uses that temporary file as input to blockifyasm | viewcfg. This |
| will cause a pdf of the cfg to be opened on Darwin. |
| """ |
| d = exec_ctx.frame.Disassemble() |
| |
| with tempfile.TemporaryFile() as f: |
| f.write(d) |
| f.flush() |
| f.seek(0) |
| p1 = subprocess.Popen([BLOCKIFYASM_PATH], stdin=f, |
| stdout=subprocess.PIPE) |
| subprocess.Popen([VIEWCFG_PATH], stdin=p1.stdout) |
| p1.stdout.close() # Allow p1 to receive a SIGPIPE if p2 exits. |
| |
| |
| def __lldb_init_module(debugger, internal_dict): |
| import_llvm_dataformatters(debugger) |
| debugger.HandleCommand('command script add disassemble-asm-cfg ' |
| '-f lldbToolBox.create_swift_disassemble_viewcfg') |
