Windows NT 4.0 source code leak
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// TITLE("Alpha PAL funtions for HAL")//++//// Copyright (c) 1992-1993 Digital Equipment Corporation//// Module Name://// palhalt.s//// Abstract://// This module implements routines to call PAL functions// from the Hal.////// Author://// Jeff McLeman (mcleman) 09-Jul-1992//// Environment://// Kernel mode only.//// Revision History://// 13-Jul-1992 Jeff McLeman (mcleman)// add HalpMb to functions.//// 14-Dec-1993 Joe Notarangelo// Change HalpHalt to HalpReboot to fit new call pal encodings.//--
#include "ksalpha.h"
//++//// VOID// HalpReboot(// )//// Routine Description://// This function merely calls the PAL to reboot the Alpha processor.// THis is used to restart the console firmware. (Note, MIPS does// not have a REBOOT instruction, so there had to be a mechanism to// restart the firware. Alpha merely reboots, which causes a jump// to firmware PAL, which restarts the firmware.)//// Arguments://// None.//// Return Value://// None.////--
LEAF_ENTRY(HalpReboot)
REBOOT // call the PAL to reboot to firmware
.end HalpReboot
//++//// VOID// HalpImb(// )//// Routine Description://// This function merely calls the PAL to issue an Instruction// Memory Barrier on the Alpha processor..//// Arguments://// None.//// Return Value://// None.////--
LEAF_ENTRY(HalpImb)
IMB // call the PAL to do an IMB
ret zero,(ra)
.end HalpImb
//++//// VOID// HalpMb(// )//// Routine Description://// This function merely calls the PAL to issue a general// Memory Barrier on the Alpha processor..//// Arguments://// None.//// Return Value://// None.////--
LEAF_ENTRY(HalpMb)
mb // memory barrier
ret zero, (ra)
.end HalpMb
//++//// VOID// HalpCachePcrValues(// )//// Routine Description://// This function merely calls the PAL to cache values in the// PCR for faster access.//// Arguments://// None.//// Return Value://// None.////--
LEAF_ENTRY(HalpCachePcrValues)
CACHE_PCR_VALUES // call the palcode
ret zero,(ra)
.end HalpCachePcrValues//++//// ULONG// HalpRpcc(// )//// Routine Description://// This function executes the RPCC (read processor cycle counter)// instruction.//// Arguments://// None.//// Return Value://// The low-order 32 bits of the processor cycle counter is returned// as the function value.// N.B. At 125 MHz this counter wraps about every 30 seconds. It is// the caller's responsibility to deal with overflow or wraparound.////--
LEAF_ENTRY(HalpRpcc)
rpcc v0 // get rpcc value addl v0, zero, v0 // extend
ret zero, (ra) // return
.end HalpRpcc
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