Compaq ECQD2KCTE manual Insqtilr, Insqtiqr, Insquel, Insqueq, Probe

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

Mnemonic	Operation and Description
INSQTILR	Insert into longword queue at tail, interlocked resident
	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. This instruction requires that the queue be memory-
	resident and that the queue header and elements are quadword-aligned.
INSQTIQ	Insert into quadword 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.
INSQTIQR	Insert into quadword queue at tail, interlocked resident
	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. This instruction requires that the queue be memory-
	resident and that the queue header and elements are octaword-aligned.
INSQUEL	Insert into longword queue
	The entry specified in R17 is inserted into the absolute queue following the
	entry specified by the predecessor addressed by R16 for INSQUEL, or fol-
	lowing the entry specified by the contents of the longword addressed by R16
	for INSQUEL/D. The insertion is a noninterruptible operation.
INSQUEQ	Insert into quadword queue

The entry specified in R17 is inserted into the absolute queue following the entry specified by the predecessor addressed by R16 for INSQUEQ, or fol- lowing the entry specified by the contents of the quadword addressed by R16 for INSQUEQ/D. The insertion is a noninterruptible operation.

PROBE Probe read/write access

PROBE checks the read (PROBER) or write (PROBEW) accessibility of the first and last byte specified by the base address and the signed offset; the bytes in between are not checked. System software must check all pages between the two bytes if they are to be accessed. <p> PROBE is only intended to check a single datum for accessibility.

9–4Alpha Architecture Handbook