Intel ITANIUM ARCHITECTURE - SOFTWARE DEVELOPERS VOLUME 3 REV 2.3, Manual

Page: 701 / 1898

Volume 2, Part 1: Processor Abstraction Layer 2:453
PAL_PTCE_INFO
PAL_PTCE_INFO – Get PTCE Purge Loop Information (6)
Purpose:
Returns information required for the architected loop used to purge (initialize) the
entire TC.
Calling Conv:
Static Registers Only
Mode:
Physical and Virtual
Buffer:
Not dependent
Arguments:
Returns:
Status:
Description:
No explicit hardware support is required by this call. See the purge loop example in the
description of the
ptc.e
instruction in Chapter 2, “Instruction Reference” in Volume 3 .
Argument Description
index Index of PAL_PTCE_INFO within the list of PAL procedures.
Reserved 0
Reserved 0
Reserved 0
Return Value Description
status Return status of the PAL_PTCE_INFO procedure.
tc_base Unsigned 64-bit integer denoting the beginning address to be used by the first PTCE
instruction in the purge loop.
tc_counts Two unsigned 32-bit integers denoting the loop counts of the outer (loop 1) and inner (loop 2)
purge loops. count1 (loop 1) is contained in bits 63:32 of the parameter, and count2 (loop 2)
is contained in bits 31:0 of the parameter.
tc_strides Two unsigned 32-bit integers denoting the loop strides of the outer (loop 1) and inner (loop 2)
purge loops. stride1 (loop 1) is contained in bits 63:32 of the parameter, and stride2 (loop 2)
is contained in bits 31:0 of the parameter.
Status Value Description
0 Call completed without error
-2 Invalid argument
-3 Call completed with error