xref: /freebsd-11-stable/contrib/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_stacktrace_printer.h

//===-- sanitizer_stacktrace_printer.h --------------------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file is shared between sanitizers' run-time libraries.
//
//===----------------------------------------------------------------------===//
#ifndef SANITIZER_STACKTRACE_PRINTER_H
#define SANITIZER_STACKTRACE_PRINTER_H

#include "sanitizer_common.h"
#include "sanitizer_symbolizer.h"

namespace __sanitizer {

// Render the contents of "info" structure, which represents the contents of
// stack frame "frame_no" and appends it to the "buffer". "format" is a
// string with placeholders, which is copied to the output with
// placeholders substituted with the contents of "info". For example,
// format string
//   "  frame %n: function %F at %S"
// will be turned into
//   "  frame 10: function foo::bar() at my/file.cc:10"
// You may additionally pass "strip_path_prefix" to strip prefixes of paths to
// source files and modules, and "strip_func_prefix" to strip prefixes of
// function names.
// Here's the full list of available placeholders:
//   %% - represents a '%' character;
//   %n - frame number (copy of frame_no);
//   %p - PC in hex format;
//   %m - path to module (binary or shared object);
//   %o - offset in the module in hex format;
//   %f - function name;
//   %q - offset in the function in hex format (*if available*);
//   %s - path to source file;
//   %l - line in the source file;
//   %c - column in the source file;
//   %F - if function is known to be <foo>, prints "in <foo>", possibly
//        followed by the offset in this function, but only if source file
//        is unknown;
//   %S - prints file/line/column information;
//   %L - prints location information: file/line/column, if it is known, or
//        module+offset if it is known, or (<unknown module>) string.
//   %M - prints module basename and offset, if it is known, or PC.
void RenderFrame(InternalScopedString *buffer, const char *format, int frame_no,
                 const AddressInfo &info, bool vs_style,
                 const char *strip_path_prefix = "",
                 const char *strip_func_prefix = "");

void RenderSourceLocation(InternalScopedString *buffer, const char *file,
                          int line, int column, bool vs_style,
                          const char *strip_path_prefix);

void RenderModuleLocation(InternalScopedString *buffer, const char *module,
                          uptr offset, ModuleArch arch,
                          const char *strip_path_prefix);

// Same as RenderFrame, but for data section (global variables).
// Accepts %s, %l from above.
// Also accepts:
//   %g - name of the global variable.
void RenderData(InternalScopedString *buffer, const char *format,
                const DataInfo *DI, const char *strip_path_prefix = "");

}  // namespace __sanitizer

#endif  // SANITIZER_STACKTRACE_PRINTER_H