mirror of
https://github.com/FEX-Emu/FEX.git
synced 2026-10-07 06:00:16 +02:00
Ryan Houdek
29debcda3d
These are required to expose FEX's allocators to the guest. Which is required when we are compiled with jemalloc, otherwise the libraries will crash on allocations. This needs to be done in stages otherwise glibc will load the library and as it is setting up symbols, replace malloc, which isn't set currently and cause a crash
55 lines
1.3 KiB
C++
55 lines
1.3 KiB
C++
/*
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$info$
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tags: thunklibs|fex_malloc
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desc: Handles allocations between guest and host thunks
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$end_info$
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*/
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#include <cstring>
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#include <map>
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#include <string>
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#include "common/Guest.h"
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#include <stdarg.h>
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#include "Types.h"
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#include "thunks.inl"
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#include "function_packs.inl"
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#include "function_packs_public.inl"
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#include <vector>
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extern "C" {
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void fex_malloc_NoOptimize() {
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// Does nothing, just ensures our libraries pull it in
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}
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# define ALIAS(fn) __attribute__((alias (#fn), used))
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# define PREALIAS(fn) ALIAS(fn)
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void *__libc_calloc(size_t n, size_t size) PREALIAS(fexfn_pack_calloc);
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void __libc_free(void* ptr) PREALIAS(fexfn_pack_free);
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void *__libc_malloc(size_t size) PREALIAS(fexfn_pack_malloc);
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void *__libc_memalign(size_t align, size_t s) PREALIAS(fexfn_pack_memalign);
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void *__libc_realloc(void* ptr, size_t size) PREALIAS(fexfn_pack_realloc);
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void *__libc_valloc(size_t size) PREALIAS(fexfn_pack_valloc);
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int __posix_memalign(void** r, size_t a, size_t s) PREALIAS(fexfn_pack_posix_memalign);
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// If we replace libc malloc and an application calls the malloc_usable_size then we can get a crash
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// Symbol doesn't alias exactly so just wrap it
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size_t __malloc_usable_size(void *ptr) {
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return fexfn_pack_malloc_usable_size(ptr);
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}
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}
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LOAD_LIB(libfex_malloc)
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