Compaq ECQD2KCTE manual Insqhilr, Insqhiqr, Insqtil

Table 9–1 : Unprivileged OpenVMS Alpha PALcode Instruction Summary (Continued)

Mnemonic	Operation and Description
IMB	I-Stream memory barrier
	IMB ensures that the contents of an instruction cache are coherent after the
	instruction stream has been modified by software or I/O devices.If the instruc-
	tion stream is modified and an IMB is not executed before fetching an instruc-
	tion from the modified location, it is UNPREDICTABLE whether the old or
	new value is fetched.
INSQHIL	Insert into longword queue at header, interlocked
	The entry specified in R17 is inserted into the self-relative queue following
	the header specified in R16. The insertion is a noninterruptible operation.
	The insertion is interlocked to prevent concurrent interlocked insertions or
	removals at the head or tail of the same queue by another process, in a multi-
	processor environment.
INSQHILR	Insert into longword queue at header, interlocked resident
	The entry specified in R17 is inserted into the self-relative queue following
	the header specified in R16. The insertion is a noninterruptible operation.
	The insertion is interlocked to prevent concurrent interlocked insertions or
	removals at the head or tail of the same queue by another process, in a multi-
	processor environment. This instruction requires that the queue be memory-
	resident and that the queue header and elements are quadword-aligned.
INSQHIQ	Insert into quadword queue at header, interlocked
	The entry specified in R17 is inserted into the self-relative queue following
	the header specified in R16. The insertion is a noninterruptible operation.
	The insertion is interlocked to prevent concurrent interlocked insertions or
	removals at the head or tail of the same queue by another process, in a multi-
	processor environment.
INSQHIQR	Insert into quadword queue at header, interlocked resident
	The entry specified in R17 is inserted into the self-relative queue following
	the header specified in R16. The insertion is a noninterruptible operation.
	The insertion is interlocked to prevent concurrent interlocked insertions or
	removals at the head or tail of the same queue by another process, in a multi-
	processor environment.This instruction requires that the queue be memory-
	resident and that the queue header and elements are octaword-aligned.
INSQTIL	Insert into longword queue at tail, interlocked
	The entry specified in R17 is inserted into the self-relative queue preceding
	the header specified in R16. The insertion is a noninterruptible operation.
	The insertion is interlocked to prevent concurrent interlocked insertions or
	removals at the head or tail of the same queue by another process, in a multi-
	processor environment.

9–3