Nathaniel pointed out that __vdso_sgx_enter_enclave() is tantalizingly
close to being callable from C (with caveats and a cooperative enclave).
The missing pieces are preserving %rbx and taking @leaf as a standard
parameter.
v3:
- Rebase to Jarkko's latest master, commit 47cedc7c1ed2 ("docs: ...")
- Squash into two patches. [Jarkko]
- s/Important/NOTE in a comment. [Jarkko]
v2:
- Rebase to Jarkko's latest master, commit 402fb35a477a, "docs: ...")
- Add CFI directive for RBX. [Cedric]
v1:
- https://patchwork.kernel.org/cover/11446355/
Sean Christopherson (2):
x86/sgx: vdso: Make __vdso_sgx_enter_enclave() callable from C code
selftests/sgx: Add selftest to invoke __vsgx_enter_enclave() from C
arch/x86/entry/vdso/vsgx_enter_enclave.S | 64 ++-----------------
arch/x86/include/uapi/asm/sgx.h | 61 ++++++++++++++++++
tools/testing/selftests/sgx/call.S | 1 -
tools/testing/selftests/sgx/defines.h | 1 +
tools/testing/selftests/sgx/main.c | 20 ++++--
tools/testing/selftests/sgx/main.h | 2 +-
.../selftests/sgx/test_encl_bootstrap.S | 6 +-
7 files changed, 84 insertions(+), 71 deletions(-)
--
2.26.0
