X-Git-Url: https://git.proxmox.com/?p=mirror_edk2.git;a=blobdiff_plain;f=ArmPkg%2FInclude%2FAsmMacroIoLib.h;h=408b2ca28074fb46803ed9b53802297dc768164f;hp=aa3ed61632f1a6ca2758bea99cc2ce263fadaa3a;hb=3402aac7d985bf8a9f9d3c639f3fe93609380513;hpb=2ef2b01e07c02db339f34004445734a2dbdd80e1

diff --git a/ArmPkg/Include/AsmMacroIoLib.h b/ArmPkg/Include/AsmMacroIoLib.h
index aa3ed61632..408b2ca280 100644
--- a/ArmPkg/Include/AsmMacroIoLib.h
+++ b/ArmPkg/Include/AsmMacroIoLib.h
@@ -1,9 +1,10 @@
 /** @file
   Macros to work around lack of Apple support for LDR register, =expr
 
-  Copyright (c) 2008-2009 Apple Inc. All rights reserved.<BR>
+  Copyright (c) 2008 - 2009, Apple Inc. All rights reserved.<BR>
+  Copyright (c) 2011-2012, ARM Ltd. All rights reserved.<BR>
 
-  All rights reserved. This program and the accompanying materials
+  This program and the accompanying materials
   are licensed and made available under the terms and conditions of the BSD License
   which accompanies this distribution.  The full text of the license may be found at
   http://opensource.org/licenses/bsd-license.php
@@ -119,6 +120,38 @@
   .long (_Data)           ;                 \
 1:
 
+// Reserve a region at the top of the Primary Core stack
+// for Global variables for the XIP phase
+#define SetPrimaryStack(StackTop, GlobalSize, Tmp)  \
+  and     Tmp, GlobalSize, #7         ;             \
+  rsbne   Tmp, Tmp, #8                ;             \
+  add     GlobalSize, GlobalSize, Tmp ;             \
+  sub     sp, StackTop, GlobalSize    ;             \
+                                      ;             \
+  mov     Tmp, sp                     ;             \
+  mov     GlobalSize, #0x0            ;             \
+_SetPrimaryStackInitGlobals:          ;             \
+  cmp     Tmp, StackTop               ;             \
+  beq     _SetPrimaryStackEnd         ;             \
+  str     GlobalSize, [Tmp], #4       ;             \
+  b       _SetPrimaryStackInitGlobals ;             \
+_SetPrimaryStackEnd:
+
+// Initialize the Global Variable with '0'
+#define InitializePrimaryStack(GlobalSize, Tmp1)    \
+  and     Tmp1, GlobalSize, #7        ;             \
+  rsbne   Tmp1, Tmp1, #8              ;             \
+  add     GlobalSize, GlobalSize, Tmp1 ;            \
+                                      ;             \
+  mov     Tmp1, sp                    ;             \
+  sub     sp, GlobalSize              ;             \
+  mov     GlobalSize, #0x0            ;             \
+_InitializePrimaryStackLoop:          ;             \
+  cmp     Tmp1, sp                    ;             \
+  bls     _InitializePrimaryStackEnd  ;             \
+  str     GlobalSize, [Tmp1], #-4     ;             \
+  b       _InitializePrimaryStackLoop ;             \
+_InitializePrimaryStackEnd:
 
 #elif defined (__GNUC__)
 
@@ -126,7 +159,7 @@
   ldr  r1, =Address ;              \
   ldr  r0, =Data    ;              \
   str  r0, [r1]
-    
+
 #define MmioOr32(Address, OrData) \
   ldr  r1, =Address ;             \
   ldr  r2, =OrData  ;             \
@@ -148,7 +181,7 @@
   and  r0, r0, r2   ;                             \
   ldr  r2, =OrData  ;                             \
   orr  r0, r0, r2   ;                             \
-  str  r0, [r1]         
+  str  r0, [r1]
 
 #define MmioWriteFromReg32(Address, Reg) \
   ldr  r1, =Address ;                    \
@@ -167,11 +200,42 @@
 
 #define LoadConstantToReg(Data, Reg) \
   ldr  Reg, =Data
-  
+
+#define SetPrimaryStack(StackTop, GlobalSize, Tmp)  \
+  and     Tmp, GlobalSize, #7         ;             \
+  rsbne   Tmp, Tmp, #8                ;             \
+  add     GlobalSize, GlobalSize, Tmp ;             \
+  sub     sp, StackTop, GlobalSize    ;             \
+                                      ;             \
+  mov     Tmp, sp                     ;             \
+  mov     GlobalSize, #0x0            ;             \
+_SetPrimaryStackInitGlobals:          ;             \
+  cmp     Tmp, StackTop               ;             \
+  beq     _SetPrimaryStackEnd         ;             \
+  str     GlobalSize, [Tmp], #4       ;             \
+  b       _SetPrimaryStackInitGlobals ;             \
+_SetPrimaryStackEnd:
+
+// Initialize the Global Variable with '0'
+#define InitializePrimaryStack(GlobalSize, Tmp1)    \
+  and     Tmp1, GlobalSize, #7        ;             \
+  rsbne   Tmp1, Tmp1, #8              ;             \
+  add     GlobalSize, GlobalSize, Tmp1 ;            \
+                                      ;             \
+  mov     Tmp1, sp                    ;             \
+  sub     sp, GlobalSize              ;             \
+  mov     GlobalSize, #0x0            ;             \
+_InitializePrimaryStackLoop:          ;             \
+  cmp     Tmp1, sp                    ;             \
+  bls     _InitializePrimaryStackEnd  ;             \
+  str     GlobalSize, [Tmp1], #-4     ;             \
+  b       _InitializePrimaryStackLoop ;             \
+_InitializePrimaryStackEnd:
+
 #else
 
 //
-// Use ARM assembly macros, form armasam 
+// Use ARM assembly macros, form armasam
 //
 //  Less magic in the macros if ldr reg, =expr works
 //
@@ -187,7 +251,7 @@
 
 // returns Data in R0 and Address in R1, and OrData in r2
 #define MmioOr32(Address, OrData) MmioOr32Macro Address, OrData
-  
+
 
 // returns _Data in R0 and _Address in R1, and _OrData in r2
 
@@ -229,8 +293,11 @@
 // conditional load testing eq flag
 #define LoadConstantToRegIfEq(Data, Reg)  LoadConstantToRegIfEqMacro Data, Reg
 
+#define SetPrimaryStack(StackTop,GlobalSize,Tmp) SetPrimaryStack StackTop, GlobalSize, Tmp
 
-#endif
+// Initialize the Global Variable with '0'
+#define InitializePrimaryStack(GlobalSize, Tmp1) InitializePrimaryStack GlobalSize, Tmp1
 
+#endif
 
 #endif