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f21f8e7142
* Remove diverged copy of 'linux-sgx' * Squashed 'sgx-jvm/linux-sgx/' content from commit 3699ffd5e git-subtree-dir: sgx-jvm/linux-sgx git-subtree-split: 3699ffd5ebd8e79d599301fa2e5814e2386cad2d * ENT-1194 - Executable heap * ENT-1194 - Placeholder for passing of enclave context to create_thread |
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| .. | ||
| gperftools-2.5 | ||
| Makefile | ||
| README | ||
Please, download the latest gperftools code from: https://github.com/gperftools/gperftools
The Intel(R) Software Guard Extensions (Intel(R) SGX) tcmalloc is based on gperftools-2.5 (the latest version avaialble at the release date).
Do the following to enable tcmalloc in Intel(R) SGX:
1. Copy libsgx_tcmalloc.a to the Intel(R) SGX SDK installation directory.
2. Add "-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive" into enclave linking options in the Makefile.
For example:
Enclave_Link_Flags := $(SGX_COMMON_CFLAGS) -Wl,--no-undefined -nostdlib -nodefaultlibs -nostartfiles -L$(SGX_LIBRARY_PATH) \
-Wl,--whole-archive -l$(Trts_Library_Name) -Wl,--no-whole-archive \
-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive \
-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -l$(Crypto_Library_Name) -l$(Service_Library_Name) -Wl,--end-group \
-Wl,-Bstatic -Wl,-Bsymbolic -Wl,--no-undefined \
-Wl,-pie,-eenclave_entry -Wl,--export-dynamic \
-Wl,--defsym,__ImageBase=0 \
-Wl,--version-script=Enclave/Enclave.lds
NOTE: The flags "-Wl,--whole-archive -lsgx_tcmalloc -Wl,--no-whole-archive" must be inserted before "-Wl,--start-group -lsgx_tstdc -lsgx_tstdcxx -Wl,--end-group".
Otherwise, the enclave build will fail.
3. Set the enclave HeapMaxSize equal or larger than 0x900000 in Enclave.config.xml. For example:
<HeapMaxSize>0x900000</HeapMaxSize>
Intel(R) SGX SDK includes a C++ library based on STLPort (sgx_tstdcxx) and a modern one based on libcxx (sgx_tcxx).
By default, the trusted TCMalloc library uses sgx_tcxx. However, you may change that by editing "./gperftools-2.5/autogen-linux.sh".
From:
CPPFLAGS="-I../../../common/inc -I../../../common/inc/tlibc -I../../../common/inc/internal/ -I../../../sdk/tlibcxx/include -I../../../sdk/trts/"
To:
CPPFLAGS="-I../../../common/inc -I../../../common/inc/tlibc -I../../../common/inc/internal/ -I../../../sdk/tlibstdcxx/stlport -I../../../sdk/trts/"
Note that if your enclave links with sgx_tcmalloc, you must use the same C++ library you choose to build tcmalloc with. Otherwise, the target enclave build will fail.