| // Copyright 2024 The Chromium Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "chromeos/ash/components/memory/elf_sections.h" |
| |
| #include <cstdint> |
| |
| namespace ash { |
| |
| // The location of ELF sections are determined after compile. These values are |
| // defined as 0 as a placeholder and will be filled with actual values by |
| // `build/chromeos/embed_sections.py`. |
| // :section_embedded_chrome_binary target generates `chrome.sections_embedded` |
| // using embed_sections.py. |
| // |
| // __attribute__((used)) + const makes these global variables be in .rodata |
| // section. volatile indicates that these variables may change in ways that |
| // can't be modelled by the compiler, so prevents propagating these values. |
| // |
| // These variables need to be defined as a separated file while |
| // `chromeos/ash/components/memory/memory.cc` is the only customer. Otherwise |
| // these variables are not placed in .rodata section. |
| #define CROS_POSTLINK_INITED_CONST __attribute__((used)) const volatile |
| |
| CROS_POSTLINK_INITED_CONST uintptr_t kRodataAddr = 0; |
| CROS_POSTLINK_INITED_CONST uint64_t kRodataSize = 0; |
| CROS_POSTLINK_INITED_CONST uintptr_t kTextHotAddr = 0; |
| CROS_POSTLINK_INITED_CONST uint64_t kTextHotSize = 0; |
| |
| #undef CROS_POSTLINK_INITED_CONST |
| } // namespace ash |
