mirror of
https://github.com/reactos/reactos.git
synced 2024-11-04 22:00:55 +00:00
805 lines
15 KiB
ArmAsm
805 lines
15 KiB
ArmAsm
/*
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* COPYRIGHT: See COPYING in the top level directory
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* PROJECT: ReactOS kernel
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* FILE: ntoskrnl/ex/i386/fastinterlck_asm.S
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* PURPOSE: FASTCALL Interlocked Functions
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* PROGRAMMERS: Alex Ionescu (alex@relsoft.net)
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*/
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/* INCLUDES ******************************************************************/
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#include <reactos/asm.h>
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#include <ndk/asm.h>
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#include <internal/i386/asmmacro.S>
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/* FUNCTIONS ****************************************************************/
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.code32
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.text
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/*
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* NOTE: These functions must obey the following rules:
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* - Acquire locks only on MP systems.
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* - Be safe at HIGH_LEVEL (no paged access).
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* - Preserve flags.
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* - Disable interrups.
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*/
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/*VOID
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*FASTCALL
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*ExInterlockedAddLargeStatistic(IN PLARGE_INTEGER Addend,
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* IN ULONG Increment)
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*/
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.global @ExInterlockedAddLargeStatistic@8
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@ExInterlockedAddLargeStatistic@8:
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#ifdef CONFIG_SMP
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/* Do the addition */
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lock add [ecx], edx
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/* Check for carry bit and return */
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jb 1f
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ret
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1:
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/* Add carry */
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lock adc dword ptr [ecx+4], 0
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#else
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/* Do the addition and add the carry */
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add dword ptr [ecx], edx
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adc dword ptr [ecx+4], 0
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#endif
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/* Return */
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ret
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/*ULONG
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*FASTCALL
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*ExfInterlockedAddUlong(IN PULONG Addend,
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* IN ULONG Increment,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedAddUlong@12
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@ExfInterlockedAddUlong@12:
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/* Save flags */
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pushfd
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#ifdef CONFIG_SMP
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/* Get lock address */
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mov eax, [esp+8]
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.start1:
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#endif
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/* Disable interrupts */
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cli
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/* Acquire lock */
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ACQUIRE_SPINLOCK(eax, .spin1)
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/* Do the add */
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mov eax, [ecx]
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add [ecx], edx
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#ifdef CONFIG_SMP
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/* Get spinlock address and release it */
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mov edx, [esp+8]
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RELEASE_SPINLOCK(edx)
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#endif
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/* Restore flags and return */
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popfd
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ret 4
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#ifdef CONFIG_SMP
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.spin1:
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/* Restore flags and spin */
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popfd
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pushfd
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SPIN_ON_LOCK(eax, .start1)
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#endif
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/*PLIST_ENTRY
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*FASTCALL
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*ExfInterlockedInsertHeadList(IN PLIST_ENTRY ListHead,
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* IN PLIST_ENTRY ListEntry,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedInsertHeadList@12
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@ExfInterlockedInsertHeadList@12:
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#ifdef CONFIG_SMP
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/* Save lock address */
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push esi
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mov esi, [esp+8]
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#endif
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/* Save flags and disable interrupts */
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pushfd
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.start2:
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cli
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/* Acquire lock */
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ACQUIRE_SPINLOCK(esi, .spin2)
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/* Get list pointer */
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mov eax, [ecx]
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/* Do the insert */
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mov [edx], eax
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mov [edx+4], ecx
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mov [ecx], edx
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mov [eax+4], edx
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/* Release lock and restore flags */
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RELEASE_SPINLOCK(esi)
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popfd
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#ifdef CONFIG_SMP
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pop esi
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#endif
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/* Check if list was empty */
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xor eax, ecx
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jz 2f
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/* Return list pointer */
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xor eax, ecx
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2:
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ret 4
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#ifdef CONFIG_SMP
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.spin2:
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popfd
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pushfd
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SPIN_ON_LOCK(esi, .start2)
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#endif
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/*PLIST_ENTRY
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*FASTCALL
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*ExfInterlockedInsertTailList(IN PLIST_ENTRY ListHead,
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* IN PLIST_ENTRY ListEntry,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedInsertTailList@12
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@ExfInterlockedInsertTailList@12:
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#ifdef CONFIG_SMP
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/* Save lock address */
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push esi
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mov esi, [esp+8]
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#endif
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/* Save flags and disable interrupts */
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pushfd
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.start3:
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cli
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/* Acquire lock */
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ACQUIRE_SPINLOCK(esi, .spin3)
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/* Get list pointer */
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mov eax, [ecx+4]
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/* Do the insert */
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mov [edx], ecx
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mov [edx+4], eax
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mov [ecx+4], edx
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mov [eax], edx
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/* Release lock and restore flags */
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RELEASE_SPINLOCK(esi)
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popfd
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#ifdef CONFIG_SMP
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pop esi
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#endif
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/* Check if list was empty */
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xor eax, ecx
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jz 2f
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/* Return list pointer */
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xor eax, ecx
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2:
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ret 4
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#ifdef CONFIG_SMP
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.spin3:
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popfd
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pushfd
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SPIN_ON_LOCK(esi, .start3)
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#endif
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/*PLIST_ENTRY
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*FASTCALL
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*ExfInterlockedRemoveHeadList(IN PLIST_ENTRY ListHead,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedRemoveHeadList@8
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@ExfInterlockedRemoveHeadList@8:
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/* Save flags and disable interrupts */
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.start4:
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pushfd
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cli
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ACQUIRE_SPINLOCK(edx, .spin4)
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/* Get list pointer */
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mov eax, [ecx]
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/* Check if it's empty */
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cmp eax, ecx
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je 2f
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/* Get the next entry and do the deletion */
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#ifdef CONFIG_SMP
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push ebx
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mov ebx, [eax]
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mov [ecx], ebx
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mov [ebx+4], ecx
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#else
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mov edx, [eax]
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mov [ecx], edx
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mov [edx+4], ecx
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#endif
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/* Release lock */
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#ifdef CONFIG_SMP
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RELEASE_SPINLOCK(edx)
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pop ebx
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#endif
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/* Restore flags */
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popfd
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/* Return */
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ret
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2:
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/* Release lock */
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RELEASE_SPINLOCK(edx)
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/* Restore flags */
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popfd
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/* Return empty list */
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xor eax, eax
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ret
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#ifdef CONFIG_SMP
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.spin4:
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popfd
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SPIN_ON_LOCK(edx, .start4)
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#endif
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExfInterlockedPopEntryList(IN PSINGLE_LIST_ENTRY ListHead,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedPopEntryList@8
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@ExfInterlockedPopEntryList@8:
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/* Save flags and disable interrupts */
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.start5:
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pushfd
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cli
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ACQUIRE_SPINLOCK(edx, .spin5)
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/* Get list pointer */
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mov eax, [ecx]
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/* Check if it's empty */
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or eax, eax
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je 3f
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/* Get next entry and do deletion */
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#ifdef CONFIG_SMP
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push edx
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#endif
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mov edx, [eax]
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mov [ecx], edx
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#ifdef CONFIG_SMP
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pop edx
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#endif
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2:
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/* Release lock */
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RELEASE_SPINLOCK(edx)
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/* Restore flags */
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popfd
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/* Return */
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ret
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3:
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/* Return empty list */
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xor eax, eax
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jmp 2b
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#ifdef CONFIG_SMP
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.spin5:
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popfd
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SPIN_ON_LOCK(edx, .start5)
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#endif
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExfInterlockedPushEntryList(IN PSINGLE_LIST_ENTRY ListHead,
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* IN PSINGLE_LIST_ENTRY ListEntry,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExfInterlockedPushEntryList@12
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@ExfInterlockedPushEntryList@12:
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/* Save flags */
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pushfd
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/* Save lock pointer */
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#ifdef CONFIG_SMP
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push edx
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mov edx, [esp+12]
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#endif
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/* Disable interrupts */
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.start6:
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cli
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#ifdef CONFIG_SMP
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ACQUIRE_SPINLOCK(edx, .spin6)
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pop edx
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#endif
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/* Get list pointer */
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mov eax, [ecx]
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/* Do push */
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mov [edx], eax
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mov [ecx], edx
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/* Release lock */
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#ifdef CONFIG_SMP
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mov edx, [esp+8]
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RELEASE_SPINLOCK(edx)
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#endif
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/* Restore flags */
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popfd
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/* Return */
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ret 4
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#ifdef CONFIG_SMP
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.spin6:
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pop edx
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popfd
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pushfd
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push edx
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mov edx, [esp+12]
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SPIN_ON_LOCK(edx, .start6)
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#endif
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExInterlockedPopEntrySList(IN PSINGLE_LIST_ENTRY ListHead,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExInterlockedPopEntrySList@8
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.global @InterlockedPopEntrySList@4
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.global _ExpInterlockedPopEntrySListResume@0
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.global _ExpInterlockedPopEntrySListFault@0
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.global _ExpInterlockedPopEntrySListEnd@0
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@ExInterlockedPopEntrySList@8:
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@InterlockedPopEntrySList@4:
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/* Save registers */
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push ebx
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push ebp
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/* Pointer to list */
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mov ebp, ecx
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/* Get sequence number and link pointer */
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_ExpInterlockedPopEntrySListResume@0:
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mov edx, [ebp+4]
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mov eax, [ebp]
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/* Check if the list is empty */
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or eax, eax
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jz 2f
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/* Copy sequence number and adjust it */
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lea ecx, [edx-1]
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/* Get next pointer and do the exchange */
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_ExpInterlockedPopEntrySListFault@0:
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mov ebx, [eax]
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_ExpInterlockedPopEntrySListEnd@0:
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LOCK cmpxchg8b qword ptr [ebp]
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jnz _ExpInterlockedPopEntrySListResume@0
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/* Restore registers and return */
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2:
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pop ebp
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pop ebx
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ret
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExInterlockedPushEntrySList(IN PSINGLE_LIST_ENTRY ListHead,
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* IN PSINGLE_LIST_ENTRY ListEntry,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExInterlockedPushEntrySList@12
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@ExInterlockedPushEntrySList@12:
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/* So we can fall through below */
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pop [esp]
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.global @InterlockedPushEntrySList@8
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@InterlockedPushEntrySList@8:
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/* Save registers */
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push ebx
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push ebp
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/* Pointer to list */
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mov ebp, ecx
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mov ebx, edx
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/* Get sequence number and link pointer */
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mov edx, [ebp+4]
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mov eax, [ebp]
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1:
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/* Set link pointer */
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mov [ebx], eax
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/* Copy sequence number and adjust it */
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lea ecx, [edx+0x10001]
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/* Do the exchange */
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LOCK cmpxchg8b qword ptr [ebp]
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jnz 1b
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/* Restore registers and return */
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2:
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pop ebp
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pop ebx
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ret
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExInterlockedFlushSList(IN PSINGLE_LIST_ENTRY ListHead)
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*/
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.global @ExInterlockedFlushSList@4
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@ExInterlockedFlushSList@4:
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/* Save registers */
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push ebx
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push ebp
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/* Clear ebx */
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xor ebx, ebx
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/* Pointer to list */
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mov ebp, ecx
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/* Get sequence number and link pointer */
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mov edx, [ebp+4]
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mov eax, [ebp]
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1:
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/* Check if the list is empty */
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or eax, eax
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jz 2f
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/* Clear sequence and pointer */
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mov ecx, edx
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mov cx, bx
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/* Do the exchange */
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LOCK cmpxchg8b qword ptr [ebp]
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jnz 1b
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/* Restore registers and return */
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2:
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pop ebp
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pop ebx
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ret
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/*INTERLOCKED_RESULT
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*FASTCALL
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*Exfi386InterlockedIncrementLong(IN PLONG Addend)
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*/
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.global @Exfi386InterlockedIncrementLong@4
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@Exfi386InterlockedIncrementLong@4:
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/* Do the op */
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LOCK add dword ptr [ecx], 1
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/* Return */
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lahf
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and eax, EFLAG_SELECT
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ret
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/*INTERLOCKED_RESULT
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*FASTCALL
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*Exfi386InterlockedDecrementLong(IN PLONG Addend)
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*/
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.global @Exfi386InterlockedDecrementLong@4
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@Exfi386InterlockedDecrementLong@4:
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/* Do the op */
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LOCK sub dword ptr [ecx], 1
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/* Return */
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lahf
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and eax, EFLAG_SELECT
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ret
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/*ULONG
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*FASTCALL
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*Exfi386InterlockedExchangeUlong(IN PULONG Taget,
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* IN ULONG Value)
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*/
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.global @Exfi386InterlockedExchangeUlong@8
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@Exfi386InterlockedExchangeUlong@8:
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#ifdef CONFIG_SMP
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/* On MP, do the exchange */
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xchg [ecx], edx
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mov eax, edx
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#else
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/* On UP, use cmpxchg */
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mov eax, [ecx]
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1:
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cmpxchg [ecx], edx
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jnz 1b
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#endif
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/* Return */
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ret
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/*PVOID
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*FASTCALL
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*ExfInterlockedCompareExchange64(IN PLONGLONG Destination,
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* IN PLONGLONG Exchange,
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* IN PLONGLONG Comperand)
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*/
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.global @ExfInterlockedCompareExchange64@12
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@ExfInterlockedCompareExchange64@12:
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/* Save registers */
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push ebx
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push ebp
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/* Get destination pointer, exchange value and comperand value/address */
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mov ebp, ecx
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mov ebx, [edx]
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mov ecx, [edx+4]
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mov edx, [esp+12]
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mov eax, [edx]
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mov edx, [edx+4]
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/* Do the op */
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LOCK cmpxchg8b qword ptr [ebp]
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/* Restore volatiles */
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pop ebp
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pop ebx
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/* Return */
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ret 4
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/*PVOID
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*FASTCALL
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*ExfInterlockedCompareExchange64(IN PLONGLONG Destination,
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* IN PLONGLONG Exchange,
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* IN PLONGLONG Comperand,
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* IN PKSPIN_LOCK Lock)
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*/
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.global @ExInterlockedCompareExchange64@16
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@ExInterlockedCompareExchange64@16:
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/* Save registers */
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push ebp
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push ebp
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/* Get destination pointer, exchange value and comperand value/address */
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mov ebp, ecx
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mov ebx, [edx]
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mov ecx, [edx+4]
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mov edx, [esp+12]
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mov eax, [edx]
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mov edx, [edx+4]
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/* Do the op */
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LOCK cmpxchg8b qword ptr [ebp]
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/* Restore volatiles */
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pop ebp
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pop ebx
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/* Return */
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ret 8
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/*** Non-586 functions ***/
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/*PSINGLE_LIST_ENTRY
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*FASTCALL
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*ExfInterlockedPopEntrySList(IN PSINGLE_LIST_ENTRY ListHead,
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* IN PKSPIN_LOCK Lock)
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*/
|
|
.global @ExfInterlockedPopEntrySList@8
|
|
@ExfInterlockedPopEntrySList@8:
|
|
|
|
/* Save flags */
|
|
.starta:
|
|
pushfd
|
|
|
|
/* Disable interrupts */
|
|
cli
|
|
|
|
/* Acquire lock */
|
|
ACQUIRE_SPINLOCK(edx, .spina)
|
|
|
|
/* Get the next link and check if it's empty */
|
|
mov eax, [ecx]
|
|
or eax, eax
|
|
jz 1f
|
|
|
|
/* Get address of the next link and store it */
|
|
push [eax]
|
|
pop [ecx]
|
|
|
|
/* Decrement list depth */
|
|
dec dword ptr [ecx+4]
|
|
|
|
1:
|
|
#ifdef CONFIG_SMP
|
|
/* Release spinlock */
|
|
RELEASE_SPINLOCK(edx)
|
|
#endif
|
|
|
|
/* Restore flags and return */
|
|
popfd
|
|
ret 0
|
|
|
|
#ifdef CONFIG_SMP
|
|
.spina:
|
|
/* Restore flags and spin */
|
|
popfd
|
|
SPIN_ON_LOCK(edx, .starta)
|
|
#endif
|
|
|
|
/*PSINGLE_LIST_ENTRY
|
|
*FASTCALL
|
|
*ExfInterlockedPushEntrySList(IN PSINGLE_LIST_ENTRY ListHead,
|
|
* IN PSINGLE_LIST_ENTRY ListEntry,
|
|
* IN PKSPIN_LOCK Lock)
|
|
*/
|
|
.global @ExfInterlockedPushEntrySList@12
|
|
@ExfInterlockedPushEntrySList@12:
|
|
|
|
/* Save flags */
|
|
.startb:
|
|
pushfd
|
|
|
|
/* Disable interrupts */
|
|
cli
|
|
|
|
/* Acquire lock */
|
|
#ifndef CONFIG_SMP
|
|
mov eax, [esp+8]
|
|
ACQUIRE_SPINLOCK(eax, .spinb)
|
|
#endif
|
|
|
|
/* Get the next link and check if it's empty */
|
|
push [ecx]
|
|
|
|
/* Get address of the next link and store it */
|
|
pop [edx]
|
|
mov [ecx], edx
|
|
|
|
/* Increment list depth */
|
|
inc dword ptr [ecx+4]
|
|
|
|
#ifdef CONFIG_SMP
|
|
/* Release spinlock */
|
|
RELEASE_SPINLOCK(eax)
|
|
#endif
|
|
|
|
/* Restore flags and return */
|
|
popfd
|
|
ret 4
|
|
|
|
#ifdef CONFIG_SMP
|
|
.spinb:
|
|
/* Restore flags and spin */
|
|
popfd
|
|
SPIN_ON_LOCK(eax, .startb)
|
|
#endif
|
|
|
|
/*PVOID
|
|
*FASTCALL
|
|
*ExpInterlockedCompareExchange64(IN PLONGLONG Destination,
|
|
* IN PLONGLONG Exchange,
|
|
* IN PLONGLONG Comperand,
|
|
* IN PKSPIN_LOCK Lock)
|
|
*/
|
|
.global @ExpInterlockedCompareExchange64@16
|
|
@ExpInterlockedCompareExchange64@16:
|
|
|
|
/* Save registers */
|
|
push ebp
|
|
push ebp
|
|
|
|
/* Get destination pointer, exchange value and comperand value/address */
|
|
mov ebp, ecx
|
|
mov ebx, [edx]
|
|
mov ecx, [edx+4]
|
|
mov edx, [esp+12]
|
|
mov eax, [edx]
|
|
mov edx, [edx+4]
|
|
|
|
#ifdef CONFIG_SMP
|
|
/* Save ESI so we can store KSPINLOCK in it */
|
|
push esi
|
|
|
|
/* Save flags and lock, and disable interrupts */
|
|
pushfd
|
|
mov esi, [esp+24]
|
|
.startc:
|
|
cli
|
|
|
|
/* Acquire the spinlock */
|
|
ACQUIRE_SPINLOCK(esi, .spinc)
|
|
#else
|
|
/* Save flags and disable interrupts */
|
|
pushfd
|
|
cli
|
|
#endif
|
|
|
|
/* Compare bottom */
|
|
cmp eax, [ebp]
|
|
jne NoMatch
|
|
|
|
/* Compare top */
|
|
cmp edx, [ebp+4]
|
|
jne NoMatch
|
|
|
|
/* Save new value */
|
|
mov [ebp], ebx
|
|
mov [ebp+4], ecx
|
|
|
|
AfterSave:
|
|
#ifdef CONFIG_SMP
|
|
/* Release lock, restore volatiles and flags */
|
|
RELEASE_SPINLOCK(esi)
|
|
popfd
|
|
pop esi
|
|
#else
|
|
popfd
|
|
#endif
|
|
|
|
/* Restore the other volatiles and return */
|
|
pop ebp
|
|
pop ebx
|
|
|
|
/* Return */
|
|
ret 8
|
|
|
|
NoMatch:
|
|
/* Return the current value */
|
|
mov eax, [ebp]
|
|
mov edx, [ebp+4]
|
|
jmp AfterSave
|
|
|
|
#ifdef CONFIG_SMP
|
|
.spinc:
|
|
/* Restore flags and spin */
|
|
popfd
|
|
pushfd
|
|
SPIN_ON_LOCK(esi, .startc)
|
|
#endif
|
|
/* EOF */
|