Process Initialization

Auxiliary Vector

The AMD64 ABI uses the following auxiliary vector types.

**Figure:** Auxiliary Vector Types
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The entries that are different than in the Intel386 ABI are specified as follows:

AT_NOTELF: The a_val member of this entry is non-zero if the program is in another format than ELF.
AT_UID: The a_val member of this entry holds the real user id of the process.
AT_EUID: The a_val member of this entry holds the effective user id of the process.
AT_GID: The a_val member of this entry holds the real group id of the process.
AT_EGID: The a_val member of this entry holds the effective group id of the process.

Jan Hubicka 2003-05-04