| // Copyright 2023 The Fuchsia Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include <lib/zircon-internal/unique-backtrace.h> |
| #include <zircon/compiler.h> |
| |
| // This file contains stubs for the allocator API entry points in the libc ABI. |
| // libc.so can be dynamically linked against a shared library that provides the |
| // actual allocator implementations. These need to be provided so there won't be |
| // any dangling references in libc at startup time. Weak definitions will be |
| // replaced with external definitions in the final phase of dynamic linking, so |
| // these functions won't be called at all. |
| #define TRAP_STUB(name) \ |
| __EXPORT __WEAK void name(void) { CRASH_WITH_UNIQUE_BACKTRACE(); } |
| |
| extern "C" { |
| |
| __WEAK __attribute__((visibility("hidden"))) void __libc_init_gwp_asan(void) {} |
| |
| // Although this isn't a common allocator function, this is expected in the libc.ifs file. |
| void __scudo_print_stats(void) { CRASH_WITH_UNIQUE_BACKTRACE(); } |
| |
| TRAP_STUB(aligned_alloc) |
| TRAP_STUB(calloc) |
| TRAP_STUB(malloc) |
| TRAP_STUB(realloc) |
| TRAP_STUB(memalign) |
| TRAP_STUB(posix_memalign) |
| TRAP_STUB(pvalloc) |
| TRAP_STUB(valloc) |
| TRAP_STUB(free) |
| TRAP_STUB(malloc_disable) |
| TRAP_STUB(malloc_disable_memory_tagging) |
| TRAP_STUB(malloc_enable) |
| TRAP_STUB(malloc_info) |
| TRAP_STUB(malloc_iterate) |
| TRAP_STUB(malloc_set_add_large_allocation_slack) |
| TRAP_STUB(malloc_set_pattern_fill_contents) |
| TRAP_STUB(malloc_set_track_allocation_stacks) |
| TRAP_STUB(malloc_set_zero_contents) |
| TRAP_STUB(malloc_usable_size) |
| TRAP_STUB(mallopt) |
| TRAP_STUB(mallinfo) |
| TRAP_STUB(mallinfo2) |
| |
| } // extern "C" |
