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| author | ptitSeb <sebastien.chev@gmail.com> | 2025-03-17 16:10:09 +0100 |
|---|---|---|
| committer | ptitSeb <sebastien.chev@gmail.com> | 2025-03-17 16:10:09 +0100 |
| commit | 5b9951e1bd54a21e4c00aba314d8adf8b2ba0f22 (patch) | |
| tree | 10c1afe1fffcc6f11bef3d2db0946bb694756453 /src/wrapped | |
| parent | 6ce22546fe30eac6d8bbf40aef72f378e1654d50 (diff) | |
| download | box64-5b9951e1bd54a21e4c00aba314d8adf8b2ba0f22.tar.gz box64-5b9951e1bd54a21e4c00aba314d8adf8b2ba0f22.zip | |
[BOX32] Small refactor on memory managment
Diffstat (limited to 'src/wrapped')
| -rw-r--r-- | src/wrapped/wrappedlibc.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/src/wrapped/wrappedlibc.c b/src/wrapped/wrappedlibc.c index 5771eb4e..cd20c7d4 100644 --- a/src/wrapped/wrappedlibc.c +++ b/src/wrapped/wrappedlibc.c @@ -3004,6 +3004,12 @@ EXPORT void* my_mmap64(x64emu_t* emu, void *addr, size_t length, int prot, int f if(BOX64ENV(dynarec_log)>=LOG_DEBUG) {printf_log(LOG_NONE, "mmap64(%p, 0x%zx, 0x%x, 0x%x, %d, %zd) ", addr, length, prot, flags, fd, offset);} void* ret = box_mmap(addr, length, prot, flags, fd, offset); int e = errno; + if(emu && box64_is32bits && ret!=MAP_FAILED && ((ret>(void*)0xc0000000) || (ret+length>(void*)0xc0000000))) { + // do not allow allocating memory that high for 32bits process + box_munmap(ret, length); + ret = MAP_FAILED; + e = EEXIST; + } if((ret==MAP_FAILED && (emu || box64_is32bits)) && (BOX64ENV(log)>=LOG_DEBUG || BOX64ENV(dynarec_log)>=LOG_DEBUG)) {printf_log(LOG_NONE, "%s (%d)\n", strerror(errno), errno);} if(((ret!=MAP_FAILED) && (emu || box64_is32bits)) && (BOX64ENV(log)>=LOG_DEBUG || BOX64ENV(dynarec_log)>=LOG_DEBUG)) {printf_log(LOG_NONE, "%p\n", ret);} #ifdef DYNAREC |