determine if the address space can be
established as a secondary address
space. The testedbit must be one;
otherwise, a secondary-authority excep
tion is recognized.
The instructionPROGRAM TRANSFER with
space switching uses the authorization
index to test the primary authority bit
in the authority-table entry to deter
mine if the address space can be estab
lished as a primary address space. The
tested bit must
primary-authority
nized.
be one; otherwise, a
exception is recog-
The instruction PROGRAMCALL with space
switching causesa new authorization
index to be loaded from the ASN-second
table entry. This permits the program
which is called tobe given an authori
zation index which authorizes it to
access more address spaces than those
authorized for the calling program.Chapter 5. Program Execution 5-19
established as a secondary address
space. The tested
otherwise, a secondary-authority excep
tion is recognized.
The instruction
space switching uses the authorization
index to test the primary authority bit
in the authority-table entry to deter
mine if the address space can be estab
lished as a primary address space. The
tested bit must
primary-authority
nized.
be one; otherwise, a
exception is recog-
The instruction PROGRAM
switching causes
index to be loaded from the ASN-second
table entry. This permits the program
which is called to
zation index which authorizes it to
access more address spaces than those
authorized for the calling program.