libsanitizer/sanitizer_common/sanitizer_stacktrace_printer.h

   1 //===-- sanitizer_stacktrace_printer.h --------------------------*- C++ -*-===//
   2 //
   3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   4 // See https://llvm.org/LICENSE.txt for license information.
   5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   6 //
   7 //===----------------------------------------------------------------------===//
   8 //
   9 // This file is shared between sanitizers' run-time libraries.
  10 //
  11 //===----------------------------------------------------------------------===//
  12 #ifndef SANITIZER_STACKTRACE_PRINTER_H
  13 #define SANITIZER_STACKTRACE_PRINTER_H
  14
  15 #include "sanitizer_common.h"
  16 #include "sanitizer_symbolizer.h"
  17
  18 namespace __sanitizer {
  19
  20 // Render the contents of "info" structure, which represents the contents of
  21 // stack frame "frame_no" and appends it to the "buffer". "format" is a
  22 // string with placeholders, which is copied to the output with
  23 // placeholders substituted with the contents of "info". For example,
  24 // format string
  25 //   "  frame %n: function %F at %S"
  26 // will be turned into
  27 //   "  frame 10: function foo::bar() at my/file.cc:10"
  28 // You may additionally pass "strip_path_prefix" to strip prefixes of paths to
  29 // source files and modules, and "strip_func_prefix" to strip prefixes of
  30 // function names.
  31 // Here's the full list of available placeholders:
  32 //   %% - represents a '%' character;
  33 //   %n - frame number (copy of frame_no);
  34 //   %p - PC in hex format;
  35 //   %m - path to module (binary or shared object);
  36 //   %o - offset in the module in hex format;
  37 //   %f - function name;
  38 //   %q - offset in the function in hex format (*if available*);
  39 //   %s - path to source file;
  40 //   %l - line in the source file;
  41 //   %c - column in the source file;
  42 //   %F - if function is known to be <foo>, prints "in <foo>", possibly
  43 //        followed by the offset in this function, but only if source file
  44 //        is unknown;
  45 //   %S - prints file/line/column information;
  46 //   %L - prints location information: file/line/column, if it is known, or
  47 //        module+offset if it is known, or (<unknown module>) string.
  48 //   %M - prints module basename and offset, if it is known, or PC.
  49 void RenderFrame(InternalScopedString *buffer, const char *format, int frame_no,
  50                  uptr address, const AddressInfo *info, bool vs_style,
  51                  const char *strip_path_prefix = "",
  52                  const char *strip_func_prefix = "");
  53
  54 bool RenderNeedsSymbolization(const char *format);
  55
  56 void RenderSourceLocation(InternalScopedString *buffer, const char *file,
  57                           int line, int column, bool vs_style,
  58                           const char *strip_path_prefix);
  59
  60 void RenderModuleLocation(InternalScopedString *buffer, const char *module,
  61                           uptr offset, ModuleArch arch,
  62                           const char *strip_path_prefix);
  63
  64 // Same as RenderFrame, but for data section (global variables).
  65 // Accepts %s, %l from above.
  66 // Also accepts:
  67 //   %g - name of the global variable.
  68 void RenderData(InternalScopedString *buffer, const char *format,
  69                 const DataInfo *DI, const char *strip_path_prefix = "");
  70
  71 }  // namespace __sanitizer
  72
  73 #endif  // SANITIZER_STACKTRACE_PRINTER_H