td_mngr.h 2.7 KB

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  1. /*
  2. * Copyright (C) 2011-2017 Intel Corporation. All rights reserved.
  3. *
  4. * Redistribution and use in source and binary forms, with or without
  5. * modification, are permitted provided that the following conditions
  6. * are met:
  7. *
  8. * * Redistributions of source code must retain the above copyright
  9. * notice, this list of conditions and the following disclaimer.
  10. * * Redistributions in binary form must reproduce the above copyright
  11. * notice, this list of conditions and the following disclaimer in
  12. * the documentation and/or other materials provided with the
  13. * distribution.
  14. * * Neither the name of Intel Corporation nor the names of its
  15. * contributors may be used to endorse or promote products derived
  16. * from this software without specific prior written permission.
  17. *
  18. * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  19. * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  20. * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  21. * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  22. * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  23. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  24. * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  25. * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  26. * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  27. * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  28. * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  29. *
  30. */
  31. #ifndef _TD_MNGR_H_
  32. #define _TD_MNGR_H_
  33. #include "arch.h"
  34. #include "rts.h"
  35. // use tcs->reserved field to save some information
  36. typedef struct _tcs_sim_t
  37. {
  38. uintptr_t saved_aep;
  39. size_t tcs_state;
  40. uintptr_t saved_dtv;
  41. uintptr_t saved_fs_gs_0;
  42. } tcs_sim_t;
  43. #define TCS_STATE_INACTIVE 0 //The TCS is available for a normal EENTER
  44. #define TCS_STATE_ACTIVE 1 //A Processor is currently executing in the context of this TCS
  45. // The 1st parameter of enter_enclave function (enclave_enclave.S) is tcs.
  46. // If the parameter is changed, or EENTER_PROLOG is changed, the macro should be updated accordingly.
  47. #ifdef SE_GNU64
  48. #define GET_TCS_PTR(xbp) (tcs_t *)(*(uintptr_t *)((size_t)(xbp) - 10 * sizeof(uintptr_t)))
  49. #else
  50. #define GET_TCS_PTR(xbp) (tcs_t *)(*(uintptr_t *)((size_t)(xbp) + 2 * sizeof(uintptr_t)))
  51. #endif
  52. #ifdef __cplusplus
  53. extern "C" {
  54. #endif
  55. //Add the implementation to get the _tls_array pointer in GNU here.
  56. #include "gnu_tls.h"
  57. extern uint8_t __ImageBase;
  58. int td_mngr_set_td(void *enclave_base, tcs_t *tcs);
  59. int td_mngr_restore_td(tcs_t *tcs);
  60. #ifdef __cplusplus
  61. }
  62. #endif
  63. #endif