ramsdell
commented
8 years ago Big discovery here. I just checked out commit 6cc1fe695b61bd34eed199402b8ea575a6fe49ed. With this commit, my problems disappear and I can run the program I wrote that includes a Lua interpreter running within an enclave.
It appears that commit 6c46fa6b9c8b6b1b3395dbe822230144df7a568a is the one that is causing my problems, although I do not know why at this time. The commit message is "System call supports in the enclave". I will try continue to try to identify the problem.
johnmwshih
I once was able to run Lua within an enclave. When I try to compile the code now, I get a linkage error saying setjmp and longjmp is undefined. Here is a small program that demonstrates the problem.
$ cat user/demo/sj.c
include
if defined NOSGX
int main() { jmp_buf env; if (setjmp(env)) { return 0; } else { longjmp(env, 1); } }
else
include
void enclave_main() { jmp_buf env; if (setjmp(env)) { sgx_exit(NULL); } else { longjmp(env, 1); } }
endif
$ ./opensgx -c user/demo/sj.c cc -c -g -Iinclude -Ishare/include -Wall -pedantic -Wno-unused-function -std=gnu11 -I../libsgx/include -I../libsgx/musl-libc/include -fno-stack-protector -static -fvisibility=hidden -o demo/sj.o demo/sj.c cc -static -nostdlib -nostartfiles -Wl,-T,sgx.lds demo/sj.o -o demo/sj.sgx ../libsgx/sgx-entry.o ../libsgx/libsgx.a ../libsgx/libpolarssl-sgx.a ../libsgx/libc-sgx.a demo/sj.o: In function
enclave_main': /home/ramsdell/rep/opensgx/user/demo/sj.c:22: undefined reference tosetjmp' /home/ramsdell/rep/opensgx/user/demo/sj.c:26: undefined reference to `longjmp' collect2: error: ld returned 1 exit status make: *\ [demo/sj.sgx] Error 1 rm demo/sj.o $