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[PAL/Linux-SGX] Move print of isvprodid/isvsvn from ECREATE to EINIT
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At ECREATE time, `isvprodid` and `isvsvn` (and many other fields) are
set to zero in the SECS page. These fields will be copied from SIGSTRUCT
at EINIT time. So it's only misleading to print these fields' values at
ECREATE time. Instead print them at EINIT.

As a side effort, this commit cleans up `sgx_arch.h` header.

Signed-off-by: Dmitrii Kuvaiskii <dmitrii.kuvaiskii@intel.com>
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Dmitrii Kuvaiskii committed Aug 29, 2023
1 parent e1d7c35 commit 02f7a85
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Showing 2 changed files with 40 additions and 50 deletions.
4 changes: 2 additions & 2 deletions pal/src/host/linux-sgx/host_framework.c
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Original file line number Diff line number Diff line change
Expand Up @@ -229,8 +229,6 @@ int create_enclave(sgx_arch_secs_t* secs, sgx_arch_token_t* token) {
log_debug(" attr.flags: 0x%016lx", secs->attributes.flags);
log_debug(" attr.xfrm: 0x%016lx", secs->attributes.xfrm);
log_debug(" ssa_frame_size: %d", secs->ssa_frame_size);
log_debug(" isv_prod_id: 0x%08x", secs->isv_prod_id);
log_debug(" isv_svn: 0x%08x", secs->isv_svn);

/* Linux v5.16 introduced support for Intel AMX feature. Any process must opt-in for AMX
* by issuing an AMX-permission request. More technically, together with AMX, Intel introduced
Expand Down Expand Up @@ -518,6 +516,8 @@ int init_enclave(sgx_arch_secs_t* secs, sgx_sigstruct_t* sigstruct, sgx_arch_tok
log_debug(" mr_enclave: %s", bytes2hex(sigstruct->enclave_hash.m,
sizeof(sigstruct->enclave_hash.m),
hex, sizeof(hex)));
log_debug(" isv_prod_id: %d", sigstruct->isv_prod_id);
log_debug(" isv_svn: %d", sigstruct->isv_svn);

struct sgx_enclave_init param = {
#ifdef CONFIG_SGX_DRIVER_OOT
Expand Down
86 changes: 38 additions & 48 deletions pal/src/host/linux-sgx/sgx_arch.h
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Original file line number Diff line number Diff line change
Expand Up @@ -18,6 +18,8 @@

#pragma pack(push, 1)

#define __sgx_mem_aligned __attribute__((aligned(512)))

#define SE_KEY_SIZE 384
#define SE_EXPONENT_SIZE 4

Expand All @@ -30,9 +32,6 @@ typedef struct _sgx_measurement_t {

typedef uint8_t sgx_mac_t[SGX_MAC_SIZE];

// This if for passing a mac to hex2str
#define MACBUF_SIZE ((sizeof(sgx_mac_t) * 2) + 1)

typedef struct _sgx_attributes_t {
uint64_t flags;
uint64_t xfrm;
Expand All @@ -47,6 +46,7 @@ typedef struct _sgx_cpu_svn_t {
uint8_t svn[SGX_CPUSVN_SIZE];
} sgx_cpu_svn_t;

typedef uint8_t sgx_cet_attributes_t;
typedef uint32_t sgx_misc_select_t;
typedef uint16_t sgx_prod_id_t;
typedef uint16_t sgx_isv_svn_t;
Expand Down Expand Up @@ -125,22 +125,26 @@ typedef uint8_t sgx_isvfamily_id_t[SGX_ISV_FAMILY_ID_SIZE];
*/
#define SGX_MISCSELECT_MASK_CONST 0xffffffffUL

/* Note that fields ISVEXTPRODID and ISVFAMILYID (and some others) are part of `reserved4`; they are
* considered a micro-architectural detail and thus don't have a specific offset. */
typedef struct {
uint64_t size;
uint64_t base;
uint32_t ssa_frame_size;
sgx_misc_select_t misc_select;
uint8_t reserved1[24];
sgx_attributes_t attributes;
sgx_measurement_t mr_enclave;
uint8_t reserved2[32];
sgx_measurement_t mr_signer;
uint8_t reserved3[32];
sgx_config_id_t config_id;
sgx_prod_id_t isv_prod_id;
sgx_isv_svn_t isv_svn;
sgx_config_svn_t config_svn;
uint8_t reserved4[3834];
uint64_t size;
uint64_t base;
uint32_t ssa_frame_size;
sgx_misc_select_t misc_select;
uint8_t cet_legacy_bitmap_offset[8]; /* must not be used */
sgx_cet_attributes_t cet_attributes;
uint8_t reserved1[15];
sgx_attributes_t attributes;
sgx_measurement_t mr_enclave;
uint8_t reserved2[32];
sgx_measurement_t mr_signer;
uint8_t reserved3[32];
sgx_config_id_t config_id;
sgx_prod_id_t isv_prod_id;
sgx_isv_svn_t isv_svn;
sgx_config_svn_t config_svn;
uint8_t reserved4[3834];
} sgx_arch_secs_t;

typedef struct {
Expand Down Expand Up @@ -241,9 +245,6 @@ typedef struct {
} sgx_arch_exit_info_t;
static_assert(sizeof(sgx_arch_exit_info_t) == 4, "invalid size");

#define SGX_EXCEPTION_HARDWARE 3UL
#define SGX_EXCEPTION_SOFTWARE 6UL

typedef struct {
uint64_t maddr;
union {
Expand Down Expand Up @@ -302,19 +303,19 @@ typedef struct {
uint8_t modulus[SE_KEY_SIZE];
uint8_t exponent[SE_EXPONENT_SIZE];
uint8_t signature[SE_KEY_SIZE];
uint32_t misc_select;
uint32_t misc_mask;
uint8_t cet_attributes;
uint8_t cet_attributes_mask;
sgx_misc_select_t misc_select;
sgx_misc_select_t misc_mask;
sgx_cet_attributes_t cet_attributes;
sgx_cet_attributes_t cet_attributes_mask;
uint8_t reserved2[2];
sgx_isvfamily_id_t isv_family_id;
sgx_attributes_t attributes;
sgx_attributes_t attribute_mask;
sgx_measurement_t enclave_hash;
uint8_t reserved3[16];
sgx_isvext_prod_id_t isvext_prod_id;
uint16_t isv_prod_id;
uint16_t isv_svn;
sgx_prod_id_t isv_prod_id;
sgx_isv_svn_t isv_svn;
uint8_t reserved4[12];
uint8_t q1[SE_KEY_SIZE];
uint8_t q2[SE_KEY_SIZE];
Expand Down Expand Up @@ -351,12 +352,10 @@ typedef struct _sgx_report_data_t {
uint8_t d[SGX_REPORT_DATA_SIZE];
} sgx_report_data_t;

#define __sgx_mem_aligned __attribute__((aligned(512)))

typedef struct _report_body_t {
sgx_cpu_svn_t cpu_svn;
sgx_misc_select_t misc_select;
uint8_t cet_attributes;
sgx_cet_attributes_t cet_attributes;
uint8_t reserved1[11];
sgx_isvext_prod_id_t isv_ext_prod_id;
sgx_attributes_t attributes;
Expand All @@ -379,19 +378,18 @@ typedef struct _report_t {
sgx_mac_t mac;
} sgx_report_t;

#define SGX_REPORT_SIGNED_SIZE 384
#define SGX_REPORT_ACTUAL_SIZE 432

typedef struct {
sgx_measurement_t mr_enclave;
sgx_attributes_t attributes;
uint8_t cet_attributes;
uint8_t reserved1;
sgx_config_svn_t config_svn;
sgx_misc_select_t misc_select;
uint8_t reserved2[8];
sgx_config_id_t config_id;
uint8_t reserved3[384];
sgx_measurement_t mr_enclave;
sgx_attributes_t attributes;
sgx_cet_attributes_t cet_attributes;
uint8_t reserved1;
sgx_config_svn_t config_svn;
sgx_misc_select_t misc_select;
uint8_t reserved2[8];
sgx_config_id_t config_id;
uint8_t reserved3[384];
} sgx_target_info_t;
static_assert(sizeof(sgx_target_info_t) == 512, "incorrect struct size");

Expand All @@ -410,8 +408,6 @@ typedef struct _key_request_t {
} sgx_key_request_t;
static_assert(sizeof(sgx_key_request_t) == 512, "incorrect struct size");

#define SGX_TARGETINFO_FILLED_SIZE (sizeof(sgx_measurement_t) + sizeof(sgx_attributes_t))

typedef uint8_t sgx_key_128bit_t[16];

static inline int enclu(uint32_t eax, uint64_t rbx, uint64_t rcx, uint64_t rdx) {
Expand Down Expand Up @@ -446,12 +442,6 @@ static inline int enclu(uint32_t eax, uint64_t rbx, uint64_t rcx, uint64_t rdx)
#define SGX_KEYPOLICY_MRENCLAVE 0x1
#define SGX_KEYPOLICY_MRSIGNER 0x2

#define STACK_ALIGN 0xfffffffffffffff0
#define XSAVE_ALIGN 0xffffffffffffffc0
#define XSAVE_NON_FX_MASK 0xfffffffffffffffc

#define RETURN_FROM_OCALL 0xffffffffffffffff

#define RFLAGS_DF (1 << 10)
#define RFLAGS_AC (1 << 18)

Expand Down

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