update sources to v12.2.3

[ceph.git] / ceph / src / boost / libs / context / src / asm / ontop_i386_ms_pe_masm.asm

diff --git a/ceph/src/boost/libs/context/src/asm/ontop_i386_ms_pe_masm.asm b/ceph/src/boost/libs/context/src/asm/ontop_i386_ms_pe_masm.asm
index f60b98e583a2fc3e765ca6bf8a4315498543eed8..82246a4a2c5414a319c935cf8ed390292e774258 100644 (file)
--- a/ceph/src/boost/libs/context/src/asm/ontop_i386_ms_pe_masm.asm
+++ b/ceph/src/boost/libs/context/src/asm/ontop_i386_ms_pe_masm.asm
@@ -9,14 +9,14 @@
 ;  ---------------------------------------------------------------------------------
 ;  |    0h   |   04h   |   08h   |   0ch   |   010h  |   014h  |   018h  |   01ch  |
 ;  ---------------------------------------------------------------------------------
-;  | fc_strg |fc_deallo|  limit  |   base  |  fc_seh |   EDI   |   ESI   |   EBX   |
+;  | fc_mxcsr|fc_x87_cw| fc_strg |fc_deallo|  limit  |   base  |  fc_seh |   EDI   |
 ;  ---------------------------------------------------------------------------------
 ;  ---------------------------------------------------------------------------------
 ;  |    8    |    9    |   10    |    11   |    12   |    13   |    14   |    15   |
 ;  ---------------------------------------------------------------------------------
 ;  |   020h  |  024h   |  028h   |   02ch  |   030h  |   034h  |   038h  |   03ch  |
 ;  ---------------------------------------------------------------------------------
-;  |   EBP   |   EIP   |    to   |   data  |         |  EH NXT |SEH HNDLR|         |
+;  |   ESI   |   EBX   |   EBP   |   EIP   |    to   |   data  |  EH NXT |SEH HNDLR|
 ;  ---------------------------------------------------------------------------------
 
 .386
@@ -25,86 +25,98 @@
 .code
 
 ontop_fcontext PROC BOOST_CONTEXT_EXPORT
-    push  ebp  ; save EBP 
-    push  ebx  ; save EBX 
-    push  esi  ; save ESI 
-    push  edi  ; save EDI 
+    ; prepare stack
+    lea  esp, [esp-02ch]
+
+IFNDEF BOOST_USE_TSX
+    ; save MMX control- and status-word
+    stmxcsr  [esp]
+    ; save x87 control-word
+    fnstcw  [esp+04h]
+ENDIF
 
     assume  fs:nothing
-    ; load NT_TIB into EDX
+    ; load NT_TIB into ECX
     mov  edx, fs:[018h]
     assume  fs:error
-
-    ; load current SEH exception list
-    mov  eax, [edx]
-    push  eax
-
-    ; load current stack base
-    mov  eax, [edx+04h]
-    push  eax
-
-    ; load current stack limit
-    mov  eax, [edx+08h]
-    push  eax
-
+    ; load fiber local storage
+    mov  eax, [edx+010h]
+    mov  [esp+08h], eax
     ; load current deallocation stack
     mov  eax, [edx+0e0ch]
-    push  eax
+    mov  [esp+0ch], eax
+    ; load current stack limit
+    mov  eax, [edx+08h]
+    mov  [esp+010h], eax
+    ; load current stack base
+    mov  eax, [edx+04h]
+    mov  [esp+014h], eax
+    ; load current SEH exception list
+    mov  eax, [edx]
+    mov  [esp+018h], eax
 
-    ; load fiber local storage
-    mov  eax, [edx+010h]
-    push  eax
+    mov  [esp+01ch], edi  ; save EDI 
+    mov  [esp+020h], esi  ; save ESI 
+    mov  [esp+024h], ebx  ; save EBX 
+    mov  [esp+028h], ebp  ; save EBP 
 
     ; store ESP (pointing to context-data) in ECX
     mov  ecx, esp
 
     ; first arg of ontop_fcontext() == fcontext to jump to
-    mov  eax, [esp+028h]
+    mov  eax, [esp+030h]
 
        ; pass parent fcontext_t
-       mov  [eax+028h], ecx
+       mov  [eax+030h], ecx
 
     ; second arg of ontop_fcontext() == data to be transferred
-    mov  ecx, [esp+02ch]
+    mov  ecx, [esp+034h]
 
        ; pass data
-       mov  [eax+02ch], ecx
+       mov  [eax+034h], ecx
 
     ; third arg of ontop_fcontext() == ontop-function
-    mov  ecx, [esp+030h]
+    mov  ecx, [esp+038h]
     
     ; restore ESP (pointing to context-data) from EAX
     mov  esp, eax
 
+IFNDEF BOOST_USE_TSX
+    ; restore MMX control- and status-word
+    ldmxcsr  [esp]
+    ; restore x87 control-word
+    fldcw  [esp+04h]
+ENDIF
+
     assume  fs:nothing
     ; load NT_TIB into EDX
     mov  edx, fs:[018h]
     assume  fs:error
-
     ; restore fiber local storage
-    pop  eax
+    mov  eax, [esp+08h]
     mov  [edx+010h], eax
-
     ; restore current deallocation stack
-    pop  eax
+    mov  eax, [esp+0ch]
     mov  [edx+0e0ch], eax
-
     ; restore current stack limit
-    pop  eax
+    mov  eax, [esp+010h]
     mov  [edx+08h], eax
-
     ; restore current stack base
-    pop  eax
+    mov  eax, [esp+014h]
     mov  [edx+04h], eax
-
     ; restore current SEH exception list
-    pop  eax
+    mov  eax, [esp+018h]
     mov  [edx], eax
 
-    pop  edi  ; save EDI 
-    pop  esi  ; save ESI 
-    pop  ebx  ; save EBX 
-    pop  ebp  ; save EBP
+    mov  edi, [esp+01ch]  ; restore EDI 
+    mov  esi, [esp+020h]  ; restore ESI 
+    mov  ebx, [esp+024h]  ; restore EBX 
+    mov  ebp, [esp+028h]  ; restore EBP 
+
+    ; prepare stack
+    lea  esp, [esp+02ch]
+
+    ; keep return-address on stack
 
     ; jump to context
     jmp ecx