[reactos] 01/06: [RTL] Get rid of x86 asm version of RtlpGetStackLimits

[Timo Kreuzer]

https://git.reactos.org/?p=reactos.git;a=commitdiff;h=4bd1e819986d818347413…

commit 4bd1e819986d8183474130d34e9539560aac44d7
Author:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
AuthorDate: Sat May 20 11:59:09 2023 +0300
Commit:     Timo Kreuzer <timo.kreuzer(a)reactos.org>
CommitDate: Fri Nov 10 19:00:41 2023 +0200

    [RTL] Get rid of x86 asm version of RtlpGetStackLimits
    
    There is no point in writing this function in asm.
---
 dll/ntdll/dispatch/i386/dispatch.S        | 16 ----------------
 dll/ntdll/rtl/libsupp.c                   |  2 --
 ntoskrnl/ntos.cmake                       |  2 +-
 ntoskrnl/rtl/i386/{stack.S => prefetch.S} | 22 ----------------------
 ntoskrnl/rtl/libsupp.c                    |  7 +++++--
 5 files changed, 6 insertions(+), 43 deletions(-)

diff --git a/dll/ntdll/dispatch/i386/dispatch.S b/dll/ntdll/dispatch/i386/dispatch.S
index 0ef4d37cc37..7564f394565 100644
--- a/dll/ntdll/dispatch/i386/dispatch.S
+++ b/dll/ntdll/dispatch/i386/dispatch.S
@@ -275,20 +275,4 @@ PUBLIC _KiFastSystemCallRet@0
 
 .ENDP
 
-PUBLIC _RtlpGetStackLimits@8
-_RtlpGetStackLimits@8:
-
-    /* Get the stack limits */
-    mov eax, [fs:TEB_STACK_LIMIT]
-    mov ecx, [fs:TEB_STACK_BASE]
-
-    /* Return them */
-    mov edx, [esp+4]
-    mov [edx], eax
-    mov edx, [esp+8]
-    mov [edx], ecx
-
-    /* return */
-    ret 8
-
 END
diff --git a/dll/ntdll/rtl/libsupp.c b/dll/ntdll/rtl/libsupp.c
index e25892e4001..7053bf401d7 100644
--- a/dll/ntdll/rtl/libsupp.c
+++ b/dll/ntdll/rtl/libsupp.c
@@ -330,7 +330,6 @@ RtlWalkFrameChain(OUT PVOID *Callers,
 }
 #endif
 
-#ifdef _AMD64_
 VOID
 NTAPI
 RtlpGetStackLimits(
@@ -341,7 +340,6 @@ RtlpGetStackLimits(
     *HighLimit = (ULONG_PTR)NtCurrentTeb()->NtTib.StackBase;
     return;
 }
-#endif
 
 BOOLEAN
 NTAPI
diff --git a/ntoskrnl/ntos.cmake b/ntoskrnl/ntos.cmake
index a85cb19e39a..47e7c01eda3 100644
--- a/ntoskrnl/ntos.cmake
+++ b/ntoskrnl/ntos.cmake
@@ -309,7 +309,7 @@ if(ARCH STREQUAL "i386")
         ${REACTOS_SOURCE_DIR}/ntoskrnl/ke/i386/trap.s
         ${REACTOS_SOURCE_DIR}/ntoskrnl/ke/i386/usercall_asm.S
         ${REACTOS_SOURCE_DIR}/ntoskrnl/ke/i386/zeropage.S
-        ${REACTOS_SOURCE_DIR}/ntoskrnl/rtl/i386/stack.S)
+        ${REACTOS_SOURCE_DIR}/ntoskrnl/rtl/i386/prefetch.S)
     list(APPEND SOURCE
         ${REACTOS_SOURCE_DIR}/ntoskrnl/config/i386/cmhardwr.c
         ${REACTOS_SOURCE_DIR}/ntoskrnl/kd64/i386/kdx86.c
diff --git a/ntoskrnl/rtl/i386/stack.S b/ntoskrnl/rtl/i386/prefetch.S
similarity index 72%
rename from ntoskrnl/rtl/i386/stack.S
rename to ntoskrnl/rtl/i386/prefetch.S
index 767aef6c414..5a0afa0e8e6 100644
--- a/ntoskrnl/rtl/i386/stack.S
+++ b/ntoskrnl/rtl/i386/prefetch.S
@@ -16,28 +16,6 @@ EXTERN _KePrefetchNTAGranularity:DWORD
 /* FUNCTIONS *****************************************************************/
 .code
 
-PUBLIC _RtlpGetStackLimits@8
-_RtlpGetStackLimits@8:
-
-    /* Get the current thread */
-    mov eax, [fs:KPCR_CURRENT_THREAD]
-
-    /* Get the stack limits */
-    mov ecx, [eax+KTHREAD_STACK_LIMIT]
-    mov edx, [eax+KTHREAD_INITIAL_STACK]
-    sub edx, SIZEOF_FX_SAVE_AREA
-
-    /* Return them */
-    mov eax, [esp+4]
-    mov [eax], ecx
-
-    mov eax, [esp+8]
-    mov [eax], edx
-
-    /* return */
-    ret 8
-
-
 PUBLIC @RtlPrefetchMemoryNonTemporal@8
 @RtlPrefetchMemoryNonTemporal@8:
 
diff --git a/ntoskrnl/rtl/libsupp.c b/ntoskrnl/rtl/libsupp.c
index 66ae4254a73..1a6ac697a7c 100644
--- a/ntoskrnl/rtl/libsupp.c
+++ b/ntoskrnl/rtl/libsupp.c
@@ -506,7 +506,6 @@ RtlWalkFrameChain(OUT PVOID *Callers,
 
 #endif
 
-#if defined(_M_AMD64) || defined(_M_ARM)
 VOID
 NTAPI
 RtlpGetStackLimits(
@@ -514,10 +513,14 @@ RtlpGetStackLimits(
     OUT PULONG_PTR HighLimit)
 {
     PKTHREAD CurrentThread = KeGetCurrentThread();
+#ifdef _M_IX86
+    * HighLimit = (ULONG_PTR)CurrentThread->InitialStack -
+        sizeof(FX_SAVE_AREA);
+#else
     *HighLimit = (ULONG_PTR)CurrentThread->InitialStack;
+#endif
     *LowLimit = (ULONG_PTR)CurrentThread->StackLimit;
 }
-#endif
 
 /* RTL Atom Tables ************************************************************/