Author: tkreuzer Date: Sun Sep 21 15:56:19 2008 New Revision: 36392
URL: http://svn.reactos.org/svn/reactos?rev=36392&view=rev Log: - add ctxswitch.S - compile cmhardwr.c from i386
Added: branches/ros-amd64-bringup/reactos/ntoskrnl/ke/amd64/ctxswitch.S (with props) Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/amd64stubs.c branches/ros-amd64-bringup/reactos/ntoskrnl/ntoskrnl-amd64hack.rbuild
Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/amd64stubs.c URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr... ============================================================================== --- branches/ros-amd64-bringup/reactos/ntoskrnl/amd64stubs.c [iso-8859-1] (original) +++ branches/ros-amd64-bringup/reactos/ntoskrnl/amd64stubs.c [iso-8859-1] Sun Sep 21 15:56:19 2008 @@ -12,7 +12,6 @@ STUB(NtContinue) STUB(KeActiveProcessors) STUB(KeDisableInterrupts) -STUB(KiSwapContext) STUB(KeContextToTrapFrame) STUB(KiDispatchException) STUB(MiGetUserPageDirectoryCount) @@ -40,7 +39,6 @@ STUB(ExInterlockedInsertTailList) STUB(ExInterlockedRemoveHeadList) STUB(ExInterlockedAddLargeStatistic) -STUB(CmpInitializeMachineDependentConfiguration) STUB(ExpFirmwareTableResource) STUB(MmNumberOfPhysicalPages) STUB(MmMapLockedPage)
Added: branches/ros-amd64-bringup/reactos/ntoskrnl/ke/amd64/ctxswitch.S URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr... ============================================================================== --- branches/ros-amd64-bringup/reactos/ntoskrnl/ke/amd64/ctxswitch.S (added) +++ branches/ros-amd64-bringup/reactos/ntoskrnl/ke/amd64/ctxswitch.S [iso-8859-1] Sun Sep 21 15:56:19 2008 @@ -1,0 +1,216 @@ +/* + * COPYRIGHT: See COPYING in the top level directory + * PROJECT: ReactOS kernel + * FILE: ntoskrnl/ke/amd64/ctxswitch.S + * PURPOSE: Thread Context Switching + * + * PROGRAMMER: Timo kreuzer (timo.kreuzer@reactos.org) + */ + +/* INCLUDES ******************************************************************/ + +#include <ndk/asm.h> + +.intel_syntax noprefix + +.altmacro +.macro UNIMPLEMENTED func + jmp 2f +1: + .ascii "Sorry, asm function " + .ascii func + .ascii " is unimplemented!\n\0" +2: + movabs rcx, offset 1b + call _DbgPrint + ret +.endm + + +/* FUNCTIONS ****************************************************************/ + +/*++ + * KiThreadStartup + * + * The KiThreadStartup routine is the beginning of any thread. + * + * Params: + * SystemRoutine - Pointer to the System Startup Routine. Either + * PspUserThreadStartup or PspSystemThreadStartup + * + * StartRoutine - For Kernel Threads only, specifies the starting execution + * point of the new thread. + * + * StartContext - For Kernel Threads only, specifies a pointer to variable + * context data to be sent to the StartRoutine above. + * + * UserThread - Indicates whether or not this is a user thread. This tells + * us if the thread has a context or not. + * + * TrapFrame - Pointer to the KTHREAD to which the caller wishes to + * switch from. + * + * Returns: + * Should never return for a system thread. Returns through the System Call + * Exit Dispatcher for a user thread. + * + * Remarks: + * If a return from a system thread is detected, a bug check will occur. + * + *--*/ + .func KiThreadStartup +.globl _KiThreadStartup +_KiThreadStartup: + + /* + * Clear all the non-volatile registers, so the thread won't be tempted to + * expect any static data (like some badly coded usermode/win9x apps do) + */ + xor rbx, rbx + xor rsi, rsi + xor rdi, rdi + xor rbp, rbp + xor r10, r10 + xor r11, r11 + xor r12, r12 + xor r13, r13 + xor r14, r14 + xor r15, r15 + + /* It's now safe to go to APC */ + mov rax, APC_LEVEL + mov cr8, rax + + /* + * Call the System Routine which is right on our stack now. + * After we pop the pointer, the Start Routine/Context is on the + * stack, we pop it as parameters to the System Routine into rcx + */ + pop rax + pop rcx + call rax + + /* The thread returned... was it a user-thread? */ + pop rcx + or rcx, rcx + jz BadThread + + /* Yes it was, set our trapframe for the System Call Exit Dispatcher */ + mov ebp, esp + + /* Exit back to user-mode */ +// jmp _KiServiceExit2 +UNIMPLEMENTED "KiThreadStartup->KiServiceExit2" + +BadThread: + + /* A system thread returned...this is very bad! */ + int 3 +.endfunc + + +/*++ + * KiSwapContextInternal + * + * The KiSwapContextInternal routine switches context to another thread. + * + * Params: + * ESI - Pointer to the KTHREAD to which the caller wishes to + * switch to. + * EDI - Pointer to the KTHREAD to which the caller wishes to + * switch from. + * + * Returns: + * None. + * + * Remarks: + * Absolutely all registers except ESP can be trampled here for maximum code flexibility. + * + *--*/ +.globl _KiSwapContextInternal +.func _KiSwapContextInternal, _KiSwapContextInternal +_KiSwapContextInternal: + UNIMPLEMENTED "KiSwapContextInternal" + ret + +.endfunc + +/** + * KiSwapContext + * + * \brief + * The KiSwapContext routine switches context to another thread. + * + * BOOLEAN + * KiSwapContext(PKTHREAD CurrentThread, PKTHREAD TargetThread); + * + * \param CurrentThread + * Pointer to the KTHREAD of the current thread. + * + * \param TargetThread + * Pointer to the KTHREAD to which the caller wishes to switch to. + * + * \returns + * The WaitStatus of the Target Thread. + * + * \remarks + * This is a wrapper around KiSwapContextInternal which will save all the + * non-volatile registers so that the Internal function can use all of + * them. It will also save the old current thread and set the new one. + * + * The calling thread does not return after KiSwapContextInternal until + * another thread switches to IT. + * + *--*/ +.globl _KiSwapContext +.func _KiSwapContext, _KiSwapContext +_KiSwapContext: + + /* Save 10 registers */ + sub rsp, 10 * 8 + + /* Save all the non-volatile ones */ + mov [rsp+72], r15 + mov [rsp+64], r14 + mov [rsp+56], r13 + mov [rsp+48], r12 + mov [rsp+40], r11 + mov [rsp+32], r10 + + mov [rsp+24], rbx + mov [rsp+16], rsi + mov [rsp+8], rdi + mov [rsp+0], rbp + + /* Get the PCR */ + mov rbx, gs:[KPCR_SELF] + + /* Get the current thread */ + mov rdi, rcx + + /* Get the New Thread */ + mov rsi, rdx + + /* Get the wait IRQL */ + movzx ecx, byte ptr [edi+KTHREAD_WAIT_IRQL] + + /* Do the swap with the registers correctly setup */ + call _KiSwapContextInternal + + /* Restore the registers */ + mov rbp, [rsp+0] + mov rdi, [rsp+8] + mov rsi, [rsp+16] + mov rbx, [rsp+24] + + mov r10, [rsp+32] + mov r11, [rsp+40] + mov r12, [rsp+48] + mov r13, [rsp+56] + mov r14, [rsp+64] + mov r15, [rsp+72] + + /* Clean stack */ + add esp, 10 * 8 + ret +.endfunc
Propchange: branches/ros-amd64-bringup/reactos/ntoskrnl/ke/amd64/ctxswitch.S ------------------------------------------------------------------------------ svn:eol-style = native
Modified: branches/ros-amd64-bringup/reactos/ntoskrnl/ntoskrnl-amd64hack.rbuild URL: http://svn.reactos.org/svn/reactos/branches/ros-amd64-bringup/reactos/ntoskr... ============================================================================== --- branches/ros-amd64-bringup/reactos/ntoskrnl/ntoskrnl-amd64hack.rbuild [iso-8859-1] (original) +++ branches/ros-amd64-bringup/reactos/ntoskrnl/ntoskrnl-amd64hack.rbuild [iso-8859-1] Sun Sep 21 15:56:19 2008 @@ -92,6 +92,7 @@ <directory name="amd64"> <file first="true">boot.S</file> <file>cpu.c</file> + <file>ctxswitch.S</file> <file>except.c</file> <file>irql.c</file> <file>kiinit.c</file> @@ -135,6 +136,11 @@ </directory> <directory name="config"> <if property="ARCH" value="i386"> + <directory name="i386"> + <file>cmhardwr.c</file> + </directory> + </if> + <if property="ARCH" value="amd64"> <directory name="i386"> <file>cmhardwr.c</file> </directory>
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tkreuzer＠svn.reactos.org