153 lines
4.7 KiB
NASM
153 lines
4.7 KiB
NASM
title "Profile Interrupt"
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;++
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;
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; Copyright (c) 2000 Microsoft Corporation
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;
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; Module Name:
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;
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; profint.asm
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;
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; Abstract:
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;
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; This module implements the architecture dependent code necessary to
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; process the profile interrupt.
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;
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; Author:
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;
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; David N. Cutler (davec) 12-Sep-2000
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;
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; Environment:
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;
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; Kernel mode only.
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;
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;--
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include ksamd64.inc
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extern KiProfileListHead:qword
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extern KiProfileLock:qword
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subttl "Profile Interrupt"
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;++
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;
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; VOID
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; KeProfileInterruptWithSource (
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; IN KPROFILE_SOURCE ProfileSource
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; )
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;
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; Routine Description:
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;
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; This routine is executed is response to an interrupt generated by one
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; of the profile sources. Its function is to process the system and process
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; profile lists and update bucket hit counters.
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;
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; Arguments:
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;
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; TrapFrame (rcx) - Supplies the address of a trap frame.
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;
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; ProfileSource (rdx) - Supplies the source of profile interrupt.
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;
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; Return Value:
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;
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; None.
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;
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;--
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PiFrame struct
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Source dq ? ; profile interrupt source
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Fill dq ? ; fill to 8 mod 16
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SavedRbp dq ? ; saved register RBP
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PiFrame ends
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NESTED_ENTRY KeProfileInterruptWithSource, _TEXT$00
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push_reg rbp ; save nonvolatile register
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alloc_stack (sizeof PiFrame - (1 * 8)) ; allocate stack frame
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END_PROLOGUE
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mov PiFrame.Source[rsp], rdx ; save interrupt source
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lea r11, KiProfileLock ; get address of spin lock
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AcquireSpinLock r11 ; acquire profile spin lock
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mov rcx, PiFrame.Source[rsp] ; set interrupt source
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mov rdx, gs:[PcCurrentThread] ; get current thread address
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mov rdx, ThApcState + AsProcess[rdx] ; get current process address
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add rdx, PrProfileListHead ; compute profile listhead address
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call KiProcessProfileList ; process profile list
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mov rcx, PiFrame.Source[rsp] ; set interrupt source
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lea rdx, KiProfileListHead ; get system profile listhead address
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call KiProcessProfileList ; process profile list
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lea rcx, KiProfileLock ; get address of spin lock
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ReleaseSpinLock r11 ; release spin lock
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add rsp, sizeof PiFrame - (1 * 8) ; deallocate stack frame
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pop rbp ; restore nonvolatile register
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ret ; return
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NESTED_END KeProfileInterruptWithSource, _TEXT$00
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subttl "Process Profile List"
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;++
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;
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; VOID
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; KiProcessProfileList (
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; IN KPROFILE_SOURCE Source,
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; IN PLIST_ENTRY ListHead
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; )
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;
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; Routine Description:
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;
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; This routine processes a profile list.
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;
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; Arguments:
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;
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; Source (cx) - Supplies the source of profile interrupt.
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;
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; ListHead (rdx) - Supplies a pointer to a profile list.
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;
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; Implicit Arguments:
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;
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; rbp - Supplies a pointer to a trap frame.
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;
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; Return Value:
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;
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; None.
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;
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;--
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LEAF_ENTRY KiProcessProfileList, _TEXT$00
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mov r8, LsFlink[rdx] ; get first entry address
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cmp r8, rdx ; check if list is empty
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je short KiPP30 ; if e, list is empty
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mov r9, gs:[PcSetMember] ; get procecessor set member
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mov r10, TrRip[rbp] ; get profile interrupt address
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mov ax, cx ; save profile source
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;
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; Process list entry.
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;
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KiPP10: cmp ax, (PfSource - PfProfileListEntry)[r8] ; check for source match
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jne short KiPP20 ; if ne, source mismatch
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cmp r10, (PfRangeBase - PfProfileListEntry)[r8] ; check if below base
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jb short KiPP20 ; if b, address below base
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cmp r10, (PfRangeLimit - PfProfileListEntry)[r8] ; check if above limit
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jae short KiPP20 ; if ae, address above limit
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test r9, (PfAffinity - PfProfileListEntry)[r8] ; check if in set
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jz short KiPP20 ; if z, processor not in set
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mov cl, (PfBucketShift - PfProfileListEntry)[r8] ; get shift count
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mov r11, r10 ; compute offset into profile buffer
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sub r11, (PfRangeBase - PfProfileListEntry)[r8] ;
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shr r11, cl ;
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and r11, NOT 3 ;
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mov rcx, (PfBuffer - PfProfileListEntry)[r8] ; get profile buffer address
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inc dword ptr [r11][rcx] ; increment profile bucket
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KiPP20: mov r8, LsFlink[r8] ; get next entry address
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cmp r8, rdx ; check if end of list
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jne short KiPP10 ; if ne, not end of list
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KiPP30: ret ; return
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LEAF_END KiProcessProfileList, _TEXT$00
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end
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