<Filename>x86Thunk.c</Filename>\r
<Filename>Unaligned.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>Ia32/Non-existing.c</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/LShiftU64.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/RShiftU64.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/SwapBytes64.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/SetJump.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/LongJump.s</Filename>\r
- <Filename>Ia32/SwitchStack.c</Filename>\r
+ <Filename>Ia32/InternalSwitchStack.c</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/CpuId.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/ReadEflags.s</Filename>\r
<Filename FileType="GCC_Assembly_Code">Ia32/ReadMsr64.s</Filename>\r
<Filename>Unaligned.c</Filename>\r
<Filename>Math64.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>x64/Non-existing.c</Filename>\r
- <Filename>x64/SwitchStack.c</Filename>\r
<Filename>x64/SwitchStack.asm</Filename>\r
<Filename>x64/SetJump.asm</Filename>\r
<Filename>x64/LongJump.asm</Filename>\r
<Arch ArchType="IPF">\r
<Filename>Math64.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>Ipf/setjmp.s</Filename>\r
<Filename>Ipf/SwitchStack.s</Filename>\r
- <Filename>x64/SwitchStack.c</Filename>\r
<Filename>Ipf/Unaligned.c</Filename>\r
<Filename>Ipf/CpuBreakpoint.c</Filename>\r
<Filename>Ipf/InterlockedCompareExchange32.s</Filename>\r
<Filename>x86Thunk.c</Filename>\r
<Filename>Unaligned.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>Ia32/Non-existing.c</Filename>\r
+ <Filename>Ia32/InternalSwitchStack.c</Filename>\r
<Filename>Ia32/LShiftU64.asm</Filename>\r
<Filename>Ia32/RShiftU64.asm</Filename>\r
<Filename>Ia32/ARShiftU64.asm</Filename>\r
<Filename>Ia32/SwapBytes64.asm</Filename>\r
<Filename>Ia32/SetJump.asm</Filename>\r
<Filename>Ia32/LongJump.asm</Filename>\r
- <Filename>Ia32/SwitchStack.c</Filename>\r
<Filename>Ia32/CpuId.asm</Filename>\r
<Filename>Ia32/ReadEflags.asm</Filename>\r
<Filename>Ia32/ReadMsr64.asm</Filename>\r
<Filename>Unaligned.c</Filename>\r
<Filename>Math64.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>x64/Non-existing.c</Filename>\r
- <Filename>x64/SwitchStack.c</Filename>\r
<Filename>x64/SwitchStack.asm</Filename>\r
<Filename>x64/SetJump.asm</Filename>\r
<Filename>x64/LongJump.asm</Filename>\r
<Arch ArchType="IPF">\r
<Filename>Math64.c</Filename>\r
<Filename>LongJump.c</Filename>\r
+ <Filename>SwitchStack.c</Filename>\r
<Filename>Ipf/PalCallStatic.s</Filename>\r
<Filename>Ipf/setjmp.s</Filename>\r
- <Filename>x64/SwitchStack.c</Filename>\r
<Filename>Ipf/SwitchStack.s</Filename>\r
<Filename>Ipf/Unaligned.c</Filename>\r
<Filename>Ipf/CpuBreakpoint.c</Filename>\r
OUT INT64 *Remainder\r
);\r
\r
+VOID\r
+EFIAPI\r
+InternalSwitchStack (\r
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r
+ IN VOID *Context1,\r
+ IN VOID *Context2,\r
+ IN VOID *NewStack\r
+ );\r
+\r
//\r
// Ia32 and x64 specific functions\r
//\r
--- /dev/null
+/** @file\r
+ SwitchStack() function for IA-32.\r
+\r
+ Copyright (c) 2006, Intel Corporation<BR>\r
+ All rights reserved. This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+ Module Name: InternalSwitchStack.c\r
+\r
+**/\r
+\r
+/**\r
+ Transfers control to a function starting with a new stack.\r
+\r
+ Transfers control to the function specified by EntryPoint using the new stack\r
+ specified by NewStack and passing in the parameters specified by Context1 and\r
+ Context2. Context1 and Context2 are optional and may be NULL. The function\r
+ EntryPoint must never return.\r
+\r
+ @param EntryPoint A pointer to function to call with the new stack.\r
+ @param Context1 A pointer to the context to pass into the EntryPoint\r
+ function.\r
+ @param Context2 A pointer to the context to pass into the EntryPoint\r
+ function.\r
+ @param NewStack A pointer to the new stack to use for the EntryPoint\r
+ function.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+InternalSwitchStack (\r
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r
+ IN VOID *Context1,\r
+ IN VOID *Context2,\r
+ IN VOID *NewStack\r
+ )\r
+{\r
+ BASE_LIBRARY_JUMP_BUFFER JumpBuffer;\r
+\r
+ JumpBuffer.Eip = (UINTN)EntryPoint;\r
+ JumpBuffer.Esp = (UINTN)NewStack - sizeof (VOID*);\r
+ JumpBuffer.Esp -= sizeof (Context1) + sizeof (Context2);\r
+ ((VOID**)JumpBuffer.Esp)[1] = Context1;\r
+ ((VOID**)JumpBuffer.Esp)[2] = Context2;\r
+\r
+ LongJump (&JumpBuffer, (UINTN)-1);\r
+}\r
\r
\r
//VOID\r
-//_SwitchStack (\r
+//InternalSwitchStack (\r
// VOID *ContinuationFunction,\r
// UINTN Parameter,\r
// UINTN NewTopOfStack,\r
//\r
//--*/\r
\r
-PROCEDURE_ENTRY(_SwitchStack)\r
+PROCEDURE_ENTRY(InternalSwitchStack)\r
\r
mov r16 = -0x10;;\r
and r16 = r34, r16;; // get new stack value in R16, 0 the last nibble.\r
;;\r
br.call.sptk.few b0=b6;; // Call the continuation function\r
;;\r
-PROCEDURE_EXIT(_SwitchStack)\r
+PROCEDURE_EXIT(InternalSwitchStack)\r
\r
\r
ASSERT (Node != NULL);\r
\r
Count = FixedPcdGet32 (PcdMaximumLinkedListLength);\r
+ if (Count != 0) {\r
+ Count++;\r
+ }\r
+\r
Ptr = List;\r
do {\r
Ptr = Ptr->ForwardLink;\r
if (FixedPcdGet32 (PcdMaximumLinkedListLength) > 0) {\r
while ((Count > 0) && (Ptr != List)) {\r
Ptr = Ptr->ForwardLink;\r
+ Count--;\r
}\r
ASSERT (Count > 0);\r
}\r
--- /dev/null
+/** @file\r
+ Switch Stack functions.\r
+\r
+ Copyright (c) 2006, Intel Corporation<BR>\r
+ All rights reserved. This program and the accompanying materials\r
+ are licensed and made available under the terms and conditions of the BSD License\r
+ which accompanies this distribution. The full text of the license may be found at\r
+ http://opensource.org/licenses/bsd-license.php\r
+\r
+ THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r
+ WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r
+\r
+ Module Name: SwitchStack.c\r
+\r
+**/\r
+\r
+#include <BaseLibInternals.h>\r
+\r
+/**\r
+ Transfers control to a function starting with a new stack.\r
+\r
+ Transfers control to the function specified by EntryPoint using the new stack\r
+ specified by NewStack and passing in the parameters specified by Context1 and\r
+ Context2. Context1 and Context2 are optional and may be NULL. The function\r
+ EntryPoint must never return.\r
+\r
+ If EntryPoint is NULL, then ASSERT().\r
+ If NewStack is NULL, then ASSERT().\r
+\r
+ @param EntryPoint A pointer to function to call with the new stack.\r
+ @param Context1 A pointer to the context to pass into the EntryPoint\r
+ function.\r
+ @param Context2 A pointer to the context to pass into the EntryPoint\r
+ function.\r
+ @param NewStack A pointer to the new stack to use for the EntryPoint\r
+ function.\r
+\r
+**/\r
+VOID\r
+EFIAPI\r
+SwitchStack (\r
+ IN SWITCH_STACK_ENTRY_POINT EntryPoint,\r
+ IN VOID *Context1,\r
+ IN VOID *Context2,\r
+ IN VOID *NewStack\r
+ )\r
+{\r
+ ASSERT (EntryPoint != NULL && NewStack != NULL);\r
+\r
+ InternalSwitchStack (EntryPoint, Context1, Context2, NewStack);\r
+}\r
; None\r
;\r
;------------------------------------------------------------------------------\r
-_SwitchStack PROC\r
+InternalSwitchStack PROC\r
mov rax, rcx\r
mov rcx, rdx\r
mov rdx, r8\r
lea rsp, [r9 - 20h]\r
call rax\r
-_SwitchStack ENDP\r
+InternalSwitchStack ENDP\r
\r
END\r