kernel/eka/compsupp/rvct2_1/ucppinit_aeabi.cpp
changeset 9 96e5fb8b040d
child 10 36bfc973b146
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/kernel/eka/compsupp/rvct2_1/ucppinit_aeabi.cpp	Thu Dec 17 09:24:54 2009 +0200
@@ -0,0 +1,138 @@
+/*
+* Copyright (c) 2003-2009 Nokia Corporation and/or its subsidiary(-ies).
+* All rights reserved.
+* This component and the accompanying materials are made available
+* under the terms of "Eclipse Public License v1.0"
+* which accompanies this distribution, and is available
+* at the URL "http://www.eclipse.org/legal/epl-v10.html".
+*
+* Initial Contributors:
+* Nokia Corporation - initial contribution.
+*
+* Contributors:
+*
+* Description: 
+* toplevel initialization/destruction routines for 'user side' code compiled 
+* with the ARMCC EABI compiler. intended for static linking
+*
+*/
+
+
+extern "C" {
+
+// This calls each of the compiler constructed functions referenced from pi_ctorvec.
+// These functions arrange to 'call' the appropriate constructor for the 'static' instance
+// (in fact the call may be inlined). If the class of the instance has a destructor then 
+// compiler records that this object needs 'destructing' at 'exit' time. It does this by 
+// calling the function __cxa_atexit. We provide our own definition of this.
+// 
+// This is the EABI compliant version - it uses .init_array rather than C$$pi_ctorvec
+// which means we need to do via assembler :-(
+
+#ifdef __thumb
+  __asm void __cpp_initialize__aeabi_(void)
+    {
+    CODE16
+#ifndef _NO_FP
+    IMPORT    _fp_init [WEAK]
+#endif
+    IMPORT    |.init_array$$Base| [WEAK]
+    IMPORT    |.init_array$$Limit| [WEAK]
+
+    // export std::nothrow from here
+    EXPORT    _ZSt7nothrow
+
+#ifndef _NO_FP
+    LDR      r0,fpinit
+#endif
+    PUSH     {r4-r6,r14}
+#ifndef _NO_FP
+    CMP      r0,#0
+    BEQ      skip
+    BL       _fp_init  ;
+skip
+#endif
+    LDR      r4,base
+    LDR      r5,limit
+    B        check
+loop
+    LDR      r0,[r4,#0]
+    ADD      r0,r0,r4
+
+    BLX      r0
+    ADD      r4,#4
+check
+    CMP      r4,r5
+    BCC      loop
+    POP      {r4-r6,pc}
+
+#ifndef _NO_FP
+fpinit
+    DCD    _fp_init
+#endif
+
+// cheat - saved a whole 4 bytes!!! - value is never user
+_ZSt7nothrow
+base
+    DCD    |.init_array$$Base|
+limit
+    DCD    |.init_array$$Limit|
+
+    }
+
+#else
+  __asm void __cpp_initialize__aeabi_(void)
+    {
+    CODE32
+#ifndef _NO_FP
+    IMPORT    _fp_init [WEAK]
+#endif
+    IMPORT    |.init_array$$Base| [WEAK]
+    IMPORT    |.init_array$$Limit| [WEAK]
+
+    // export std::nothrow from here
+    EXPORT    _ZSt7nothrow
+
+#ifndef _NO_FP
+    LDR	     r0, fpinit
+#endif
+    STMFD    r13!,{r3-r5,r14}
+#ifndef _NO_FP
+    CMP      r0, #0
+    BEQ	     skip
+    BL	     _fp_init
+skip
+#endif
+    LDR      r4,base
+    LDR      r5,limit
+    CMP      r4,r5
+    LDMEQFD  r13!,{r3-r5,pc}
+loop
+    LDR      r0,[r4,#0]
+    ADR      r14,ret
+    ADD      r0,r0,r4
+    MOV      pc,r0
+ret
+    ADD      r4,r4,#4
+    CMP      r4,r5
+    BNE      loop
+    LDMFD    r13!,{r3-r5,pc}
+
+#ifndef _NO_FP
+fpinit
+    DCD    _fp_init
+#endif
+
+base
+    DCD    |.init_array$$Base|
+limit
+    DCD    |.init_array$$Limit|
+
+// cheat - defining this here saves a whole 4 bytes!!! - value is never user
+_ZSt7nothrow
+
+    }
+#endif
+
+}
+