|
1 // Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies). |
|
2 // All rights reserved. |
|
3 // This component and the accompanying materials are made available |
|
4 // under the terms of the License "Eclipse Public License v1.0" |
|
5 // which accompanies this distribution, and is available |
|
6 // at the URL "http://www.eclipse.org/legal/epl-v10.html". |
|
7 // |
|
8 // Initial Contributors: |
|
9 // Nokia Corporation - initial contribution. |
|
10 // |
|
11 // Contributors: |
|
12 // |
|
13 // Description: |
|
14 // e32\nkern\arm\nk_entry.cia |
|
15 // |
|
16 // |
|
17 |
|
18 #include <e32cia.h> |
|
19 #include <arm.h> |
|
20 #include "nk_priv.h" |
|
21 |
|
22 #include "entry.h" |
|
23 |
|
24 #ifndef EKA2_ENTRY_POINT_VERSION_IDENTIFIER |
|
25 #define EKA2_ENTRY_POINT_VERSION_IDENTIFIER \ |
|
26 asm("tst pc, #%a0" : : "i" ((TInt)0) ) |
|
27 #endif |
|
28 |
|
29 extern "C" { |
|
30 |
|
31 extern void HwInit0(); |
|
32 extern void KernelMain(); |
|
33 extern TLinAddr RomHeaderAddress; |
|
34 extern TLinAddr SuperPageAddress; |
|
35 |
|
36 |
|
37 /* |
|
38 * The main startup program |
|
39 * aRomHeader is address of ROM header passed in by bootstrap |
|
40 * aSuperPage is address of super page passed in by bootstrap |
|
41 * |
|
42 * *** NOTE *** |
|
43 * This is written in assembler in order that nk_exe.lib can be built entirely |
|
44 * from one source file. This is necessary to ensure that the vector table above |
|
45 * appears at the very beginning of the ekern.exe code section. |
|
46 * ************ |
|
47 */ |
|
48 #if defined(__GCC32__) |
|
49 GLDEF_C __NAKED__ void _E32Startup(TLinAddr /*aRomHeader*/, TLinAddr /*aSuperPage*/) |
|
50 { |
|
51 EKA2_ENTRY_POINT_VERSION_IDENTIFIER; // DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT |
|
52 asm("ldr r2, __RomHeaderAddress "); |
|
53 asm("b 1f "); // branch over space for unique ID |
|
54 |
|
55 asm(".word 0 "); // loader will replace with code seg unique ID |
|
56 // for RAM-loaded code segment |
|
57 // MUST BE AT OFFSET 12 FROM ENTRY POINT |
|
58 |
|
59 asm("1: "); |
|
60 asm("ldr r3, __SuperPage "); |
|
61 asm("str r0, [r2] "); |
|
62 asm("str r1, [r3] "); |
|
63 |
|
64 asm("bl HwInit0 "); |
|
65 |
|
66 asm("ldr r4, __CtorList "); |
|
67 |
|
68 asm("1: "); |
|
69 asm("ldr r0, [r4, #4]! "); |
|
70 asm("adr lr, 1b "); |
|
71 asm("cmp r0, #0 "); |
|
72 __JUMP(ne,r0); |
|
73 |
|
74 asm("b KernelMain "); |
|
75 |
|
76 asm("__RomHeaderAddress: "); |
|
77 asm(".word RomHeaderAddress "); |
|
78 asm("__SuperPage: "); |
|
79 asm(".word SuperPageAddress "); |
|
80 asm("__CtorList: "); |
|
81 asm(".word __CTOR_LIST__ "); |
|
82 } |
|
83 #elif defined(__ARMCC__) |
|
84 void __DLL_Export_Table__(void); |
|
85 void __cpp_initialize__aeabi_(); |
|
86 |
|
87 // The compiler generates calls to this when it reckons a top-level construction |
|
88 // needs destruction. But the kernel never will need this so, define it as a nop |
|
89 void __record_needed_destruction (void * d){} |
|
90 // 2.1 calls __aeabi_atexit passing __dso_handle. This can be a dummy (i.e. just a label) |
|
91 |
|
92 __asm void __dso_handle(void) {} |
|
93 void __aeabi_atexit(void *object, void (*dtor)(void *), void *handle){} |
|
94 |
|
95 void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage); |
|
96 |
|
97 __NAKED__ void _E32Startup(TLinAddr aRomHeader, TLinAddr aSuperPage) |
|
98 { |
|
99 EKA2_ENTRY_POINT_VERSION_IDENTIFIER; // DUMMY INSTRUCTION TO INDICATE EKA2 ENTRY POINT |
|
100 asm("b _E32Startup_Body "); |
|
101 asm(".word 0 "); // padding |
|
102 |
|
103 asm(".word 0 "); // loader will replace with code seg unique ID |
|
104 // for RAM-loaded code segment |
|
105 // MUST BE AT OFFSET 12 FROM ENTRY POINT |
|
106 } |
|
107 |
|
108 GLDEF_C void _E32Startup_Body(TLinAddr aRomHeader, TLinAddr aSuperPage) |
|
109 { |
|
110 RomHeaderAddress = aRomHeader; |
|
111 SuperPageAddress = aSuperPage; |
|
112 HwInit0(); |
|
113 |
|
114 // RVCT specific initialization |
|
115 |
|
116 // Make sure we get an export table |
|
117 __DLL_Export_Table__(); |
|
118 |
|
119 // Initialise static data |
|
120 __cpp_initialize__aeabi_(); |
|
121 |
|
122 KernelMain(); |
|
123 } |
|
124 #else |
|
125 #error Not supported |
|
126 #endif |
|
127 |
|
128 } |
|
129 |