[ros-diffs] [tkreuzer] 41006: Add initial version of RtlInterlockedPopEntrySList and stubs for RtlInterlockedPushEntrySList and RtlInterlockedFlushSList

Author: tkreuzer
Date: Wed May 20 05:32:48 2009
New Revision: 41006

URL: http://svn.reactos.org/svn/reactos?rev=41006&view=rev
Log:
Add initial version of RtlInterlockedPopEntrySList and stubs for
RtlInterlockedPushEntrySList and RtlInterlockedFlushSList

Added:
    branches/ros-amd64-bringup/reactos/lib/rtl/amd64/interlck.S   (with props)
Modified:
    branches/ros-amd64-bringup/reactos/lib/rtl/rtl.rbuild

Added: branches/ros-amd64-bringup/reactos/lib/rtl/amd64/interlck.S
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/lib/r…
==============================================================================
--- branches/ros-amd64-bringup/reactos/lib/rtl/amd64/interlck.S (added)
+++ branches/ros-amd64-bringup/reactos/lib/rtl/amd64/interlck.S [iso-8859-1] Wed May 20
05:32:48 2009
@@ -1,0 +1,188 @@
+/*
+ * COPYRIGHT:       See COPYING in the top level directory
+ * PROJECT:         ReactOS system libraries
+ * FILE:            lib/rtl/amd64/interlck.S
+ * PURPOSE:         Rtl Interlocked Functions for amd64
+ * PROGRAMMERS:     Timo Kreuzer
+ */
+
+#include <ndk/asm.h>
+#include <ndk/amd64/asmmacro.S>
+.intel_syntax noprefix
+
+
+#define SLIST8A_DEPTH_MASK      0x000000000000FFFF
+#define SLIST8A_DEPTH_INC       0x0000000000000001
+#define SLIST8A_SEQUENCE_MASK   0x0000000001FF0000
+#define SLIST8A_SEQUENCE_INC    0x0000000000010000
+#define SLIST8A_NEXTENTRY_MASK  0xFFFFFFFFFE000000
+#define SLIST8A_NEXTENTRY_SHIFT 21
+#define SLIST8B_HEADERTYPE_MASK 0x0000000000000001
+#define SLIST8B_INIT_MASK       0x0000000000000002
+#define SLIST8B_REGION_MASK     0xE000000000000000
+
+#define SLIST16A_DEPTH_MASK      0x000000000000FFFF
+#define SLIST16A_DEPTH_INC       0x0000000000000001
+#define SLIST16A_SEQUENCE_MASK   0xFFFFFFFFFFFF0000
+#define SLIST16B_HEADERTYPE_MASK 0x0000000000000001
+#define SLIST16B_INIT_MASK       0x0000000000000002
+#define SLIST16B_NEXTENTY_MASK   0xFFFFFFFFFFFFFFF0
+
+
+POINTER_MASK: .quad 0x000007FFFFFFFFF0
+
+SLIST16_POINTER_MASK: .quad 0xFFFFFFFFFFFFFFF0
+
+
+/* FUNCTIONS ****************************************************************/
+
+
+/* PSLIST_ENTRY
+ * NTAPI
+ * RtlInterlockedPopEntrySList(
+ *     IN PSLIST_HEADER ListHead);
+ */
+.proc RtlInterlockedPopEntrySList
+
+    /* Save registers */
+    push rbx
+    push rbp
+
+    /* Load ListHead->Region into rax */
+    mov rax, [rcx + 8]
+
+    /* Check what kind of header this is */
+    test rax, SLIST8B_HEADERTYPE_MASK
+    jnz 3f
+
+    /* We have an 8 byte header */
+
+    /* Load ListHead->Alignment into rax */
+    mov rax, [rcx]
+
+    /* Check if ListHead->NextEntry is NULL */
+    and rax, SLIST8A_NEXTENTRY_MASK
+    jz 2f
+
+    /* Copy rcx to rbp, as we need ecx for the exchange */
+    mov rbp, rcx
+
+    /* Copy the low 32 bits to eax */
+    mov eax, [rbp]
+
+    /* Copy the high 32 bits to edx */
+    mov edx, [rbp + 4]
+
+1:
+    /* Use rbp as pointer template in rbx*/
+    mov rbx, rbp
+    and rbx, POINTER_MASK
+
+    /* Extract the NextEntry pointer */
+    mov rcx, [rbp]
+    and rcx, SLIST8A_NEXTENTRY_MASK
+    shr rcx, SLIST8A_NEXTENTRY_SHIFT
+
+    /* Combine to new pointer in rcx */
+    or rcx, rbx
+
+    /* Load the next NextEntry pointer to rcx */
+    mov rcx, [rcx]
+
+    /* Copy Depth and Sequence number and adjust Depth */
+    lea rbx, [rax - SLIST8A_DEPTH_INC]
+
+    /* Shift bits in place */
+    shl rcx, SLIST8A_NEXTENTRY_SHIFT
+
+    /* Combine into rbx */
+    and rbx, SLIST8A_SEQUENCE_INC | SLIST8A_DEPTH_MASK
+    or rbx, rcx
+
+    /* Copy higher 32 bits into ecx */
+    mov rcx, rbx
+    shr rcx, 32
+
+    /* If [rbp] equals edx:eax, exchange it with ecx:ebx */
+    lock cmpxchg8b [rbp]
+
+    /* If not equal, retry with edx:eax, being the content of [rbp] now */
+    jnz 1b
+
+    /* Move result from edx:eax to rax */
+    shl rdx, 32
+    or rax, rdx
+
+    /* Use rbp as pointer template */
+    and rbp, POINTER_MASK
+
+    and rax, SLIST8A_NEXTENTRY_MASK
+    shr rax, SLIST8A_NEXTENTRY_SHIFT
+    or rax, rbp
+
+2:  
+    /* Restore registers and return */
+    pop rbp
+    pop rbx
+    ret
+
+3:  /* This is a 16 byte header */
+
+    /* Copy rcx to rbp, as we need rcx for the exchange */
+    mov rbp, rcx
+
+
+4:
+    /* Check if ListHead->NextEntry is NULL */
+    mov rcx, rdx
+    and rcx, SLIST16_POINTER_MASK
+    jz 5f
+
+    /* Copy Depth and Sequence number and adjust Depth */
+    lea rbx, [rax - SLIST16A_DEPTH_INC]
+
+    /* Get next pointer */
+    mov rcx, [rcx]
+
+    /* Set ListHead->HeaderType = 1 */
+    or rcx, 1
+
+    /* If [rbp] equals rdx:rax, exchange it with rcx:rbx */
+    lock cmpxchg16b [rbp]
+
+    /* If not equal, retry with rdx:rax, being the content of [rbp] now */
+    jnz 4b
+
+5:
+
+
+    /* Restore registers and return */
+    pop rbp
+    pop rbx
+    ret
+.endproc
+
+
+/* PSLIST_ENTRY
+ * NTAPI
+ * RtlInterlockedPushEntrySList(
+ *     IN PSLIST_HEADER ListHead,
+ *     IN PSLIST_ENTRY ListEntry);
+ */
+.proc RtlInterlockedPushEntrySList
+
+
+    ret
+.endproc
+
+
+/* PSLIST_ENTRY
+ * NTAPI
+ * RtlInterlockedFlushSList(
+ *     IN PSINGLE_LIST_ENTRY ListHead);
+ */
+.proc RtlInterlockedFlushSList
+
+
+    ret
+.endproc

Propchange: branches/ros-amd64-bringup/reactos/lib/rtl/amd64/interlck.S
------------------------------------------------------------------------------
    svn:eol-style = native

Modified: branches/ros-amd64-bringup/reactos/lib/rtl/rtl.rbuild
URL:
http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/lib/r…
==============================================================================
--- branches/ros-amd64-bringup/reactos/lib/rtl/rtl.rbuild [iso-8859-1] (original)
+++ branches/ros-amd64-bringup/reactos/lib/rtl/rtl.rbuild [iso-8859-1] Wed May 20 05:32:48
2009
@@ -41,6 +41,7 @@
 		<directory name="amd64">
 			<file>debug_asm.S</file>
 			<file>except_asm.S</file>
+			<file>interlck.S</file>
 			<file>unwind.c</file>
 			<file>stubs.c</file>
 		</directory>