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- /* Copyright (C) 2014 Stony Brook University
- This file is part of Graphene Library OS.
- Graphene Library OS is free software: you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public License
- as published by the Free Software Foundation, either version 3 of the
- License, or (at your option) any later version.
- Graphene Library OS is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU Lesser General Public License for more details.
- You should have received a copy of the GNU Lesser General Public License
- along with this program. If not, see <http://www.gnu.org/licenses/>. */
- #ifndef SGX_API_H
- #define SGX_API_H
- #include "sgx_arch.h"
- #include "pal_error.h"
- long sgx_ocall (unsigned long code, void * ms);
- bool sgx_is_completely_within_enclave (const void * addr, uint64_t size);
- bool sgx_is_completely_outside_enclave(const void * addr, uint64_t size);
- void* sgx_alloc_on_ustack(uint64_t size);
- void* sgx_copy_to_ustack(const void* ptr, uint64_t size);
- void sgx_reset_ustack(void);
- bool sgx_copy_ptr_to_enclave(void** ptr, void* uptr, uint64_t size);
- uint64_t sgx_copy_to_enclave(const void* ptr, uint64_t maxsize, const void* uptr, uint64_t usize);
- /*
- * sgx_report:
- * Generate SGX hardware signed report.
- */
- static inline int sgx_report (sgx_target_info_t * targetinfo,
- void * reportdata, sgx_report_t * report)
- {
- __asm__ volatile(
- ENCLU "\n"
- :: "a"(EREPORT), "b"(targetinfo), "c"(reportdata), "d"(report)
- : "memory");
- return 0;
- }
- /*
- * sgx_getkey:
- * Retrieve SGX hardware enclave cryptography key.
- */
- static inline int64_t sgx_getkey (sgx_key_request_t * keyrequest,
- sgx_key_128bit_t * key)
- {
- int64_t rax = EGETKEY;
- __asm__ volatile(
- ENCLU "\n"
- : "+a"(rax)
- : "b"(keyrequest), "c"(key)
- : "memory");
- return rax;
- }
- /*
- * rdrand:
- * Get hardware generated random value.
- */
- static inline uint32_t rdrand (void)
- {
- uint32_t ret;
- __asm__ volatile(
- "1: .byte 0x0f, 0xc7, 0xf0\n" /* RDRAND %EAX */
- "jnc 1b\n"
- :"=a"(ret)
- :: "cc");
- return ret;
- }
- /*
- * rdfsbase:
- * read FS register (allowed in enclaves).
- */
- static inline uint64_t rdfsbase (void)
- {
- uint64_t fsbase;
- __asm__ volatile(
- ".byte 0xf3, 0x48, 0x0f, 0xae, 0xc0\n" /* RDFSBASE %RAX */
- : "=a"(fsbase));
- return fsbase;
- }
- /*
- * wrfsbase:
- * modify FS register (allowed in enclaves).
- */
- static inline void wrfsbase (uint64_t addr)
- {
- __asm__ volatile(
- ".byte 0xf3, 0x48, 0x0f, 0xae, 0xd7\n" /* WRFSBASE %RDI */
- :: "D"(addr));
- }
- #endif /* SGX_API_H */
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