41-2 Vol. 3D

SGX INSTRUCTION REFERENCES

41.1.3 

Information and Error Codes

Information and error codes are reported by various instruction leaf functions to show an abnormal termination of 
the instruction or provide information which may be useful to the developer. Table 41-3 shows the various codes 
and the instruction which generated the code. Details of the meaning of the code is provided in the individual 
instruction.

Table 41-2.  Register Usage of Unprivileged Enclave Instruction Leaf Functions

Instr. Leaf

EAX 

RBX

RCX

RDX

EREPORT

00H (In)

TARGETINFO (In, EA)

REPORTDATA (In, EA)

OUTPUTDATA (In, EA)

EGETKEY

01H (In)

KEYREQUEST (In, EA)

KEY (In, EA)

EENTER

02H (In)

TCS (In, EA)

AEP (In, EA)

RBX.CSSA (Out)

Return (Out, EA)

ERESUME

03H (In)

TCS (In, EA)

AEP (In, EA)

EEXIT

04H (In)

Target (In, EA)

Current AEP (Out)

EACCEPT

05H (In)

SECINFO (In, EA)

EPCPAGE (In, EA)

EMODPE

06H (In)

SECINFO (In, EA)

EPCPAGE (In, EA)

EACCEPTCOPY

07H (In)

SECINFO (In, EA)

EPCPAGE (In, EA)

EPCPAGE (In, EA)

EA: Effective Address

Table 41-3.  Error or Information Codes for Intel® SGX Instructions

Name

Value

Returned By

No Error

0

SGX_INVALID_SIG_STRUCT

1

EINIT

SGX_INVALID_ATTRIBUTE

2

EINIT, EGETKEY

SGX_BLSTATE

3

EBLOCK

SGX_INVALID_MEASUREMENT

4

EINIT

SGX_NOTBLOCKABLE

5

EBLOCK

SGX_PG_INVLD

6

EBLOCK

SGX_LOCKFAIL

7

EBLOCK, EMODPR, EMODT

SGX_INVALID_SIGNATURE

8

EINIT

SGX_MAC_COMPARE_FAIL

9

ELDB, ELDU

SGX_PAGE_NOT_BLOCKED

10

EWB

SGX_NOT_TRACKED

11

EWB, EACCEPT

SGX_VA_SLOT_OCCUPIED

12

EWB

SGX_CHILD_PRESENT

13

EWB, EREMOVE

SGX_ENCLAVE_ACT

14

EREMOVE

SGX_ENTRYEPOCH_LOCKED

15

EBLOCK

SGX_INVALID_EINIT_TOKEN

16

EINIT

SGX_PREV_TRK_INCMPL

17

ETRACK

SGX_PG_IS_SECS

18

EBLOCK

SGX_PAGE_ATTRIBUTES_MISMATCH

19

EACCEPT, EACCEPTCOPY

SGX_PAGE_NOT_MODIFIABLE

20

EMODPR, EMODT

SGX_PAGE_NOT_DEBUGGABLE

21

EDEGRD, EDBGWR