📄 start12.lst
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ANSI-C/cC++ Compiler for HC12 V-5.0.30 Build 6037, Feb 7 2006
1: /*****************************************************
2: start12.c - standard startup code
3: The startup code may be optimized to special user requests
4: ----------------------------------------------------
5: Copyright (c) Metrowerks, Basel, Switzerland
6: All rights reserved
7: Do not modify!
8:
9: Note: ROM libraries are not implemented in this startup code
10: Note: C++ destructors of global objects are NOT yet supported in the HIWARE Object File Format.
11: To use this feature, please build your application with the ELF object file format.
12: *****************************************************/
13:
14: #include "hidef.h"
15: #include "start12.h"
16:
17: /* Macros to control how the startup code handles the COP: */
18: /* #define _DO_FEED_COP_ : do feed the COP */
19: /* #define _DO_ENABLE_COP_: do enable the COP */
20: /* #define _DO_DISABLE_COP_: disable the COP */
21: /* Without defining any of these, the startup code does NOT handle the COP */
22:
23: #pragma DATA_SEG __NEAR_SEG STARTUP_DATA /* _startupData can be accessed using 16 bit accesses. This is needed because it contains the stack top, and without stack, far data cannot be accessed */
24: struct _tagStartup _startupData; /* read-only: */
25: /* _startupData is allocated in ROM and */
26: /* initialized by the linker */
27: #pragma DATA_SEG DEFAULT
28: #if defined(FAR_DATA)
29: #include "non_bank.sgm"
30: /* the init function must be in non banked memory if banked variables are used */
31: /* because _SET_PAGE is called, which may change any page register. */
32:
33: #ifdef __cplusplus
34: extern "C"
35: #endif
36: void _SET_PAGE(void); /* the inline assembler needs a prototype */
37: /* this is a runtime routine with a special */
38: /* calling convention, dont use it in c code! */
39: static void Init(void);
40: static void Fini(void);
41: #else
42: #include "default.sgm"
43: #if defined( __BANKED__) || defined(__LARGE__)
44: static void __far Init(void);
45: static void __far Fini(void);
46: #endif /* defined( __BANKED__) || defined(__LARGE__) */
47: #endif /* FAR_DATA */
48:
49:
50: /* define value and bits for Windef Register */
51: #ifdef HC812A4
52: #define WINDEF (*(volatile unsigned char*) 0x37)
53: #if defined( __BANKED__) || defined(__LARGE__) || defined(__PPAGE__)
54: #define __ENABLE_PPAGE__ 0x40
55: #else
56: #define __ENABLE_PPAGE__ 0x0
57: #endif
58: #if defined(__DPAGE__)
59: #define __ENABLE_DPAGE__ 0x80
60: #else
61: #define __ENABLE_DPAGE__ 0x0
62: #endif
63: #if defined(__EPAGE__)
64: #define __ENABLE_EPAGE__ 0x20
65: #else
66: #define __ENABLE_EPAGE__ 0x0
67: #endif
68: #endif /* HC812A4 */
69:
70: #ifdef _HCS12_SERIALMON
71: /* for Monitor based software remap the RAM & EEPROM to adhere
72: to EB386. Edit RAM and EEPROM sections in PRM file to match these. */
73: #define ___INITRM (*(volatile unsigned char *) 0x0010)
74: #define ___INITRG (*(volatile unsigned char *) 0x0011)
75: #define ___INITEE (*(volatile unsigned char *) 0x0012)
76: #endif
77:
78: #if defined(_DO_FEED_COP_)
79: #define __FEED_COP_IN_HLI() } __asm movb #0x55, _COP_RST_ADR; __asm movb #0xAA, _COP_RST_ADR; __asm {
80: #else
81: #define __FEED_COP_IN_HLI() /* do nothing */
82: #endif
83:
84: #if !defined(FAR_DATA) && (defined( __BANKED__) || defined(__LARGE__))
85: static void __far Init(void)
86: #else
87: static void Init(void)
88: #endif
89: {
Function: Init
Source : E:\Freescale\code\MSCAN12_DP256\Sources\Start12.c
Options : -Env"GENPATH=E:\Freescale\code\MSCAN12_DP256;E:\Freescale\code\MSCAN12_DP256\bin;E:\Freescale\code\MSCAN12_DP256\prm;E:\Freescale\code\MSCAN12_DP256\cmd;E:\Freescale\code\MSCAN12_DP256\Sources;D:\Program Files\Freescale\CW for HC12 V4.5\lib\HC12c\lib;D:\Program Files\Freescale\CW for HC12 V4.5\lib\HC12c\src;D:\Program Files\Freescale\CW for HC12 V4.5\lib\HC12c\include" -Env"LIBPATH=D:\Program Files\Freescale\CW for HC12 V4.5\lib\HC12c\include" -EnvOBJPATH=E:\Freescale\code\MSCAN12_DP256\bin -EnvTEXTPATH=E:\Freescale\code\MSCAN12_DP256\bin -Lasm=%n.lst -Mb -ObjN=E:\Freescale\code\MSCAN12_DP256\MSCAN12_DP256_Data\P&E_ICD\ObjectCode\Start12.c.o
90: /* purpose: 1) zero out RAM-areas where data is allocated */
91: /* 2) copy initialization data from ROM to RAM */
92: /* 3) call global constructors in C++ */
93: /* called from: _Startup, LibInits */
94: __asm {
95: ZeroOut:
96: #if defined(__HIWARE_OBJECT_FILE_FORMAT__) && defined(__LARGE__)
97: LDX _startupData.pZeroOut:1 ; in the large memory model in the HIWARE format, pZeroOut is a 24 bit pointer
98: #else
99: LDX _startupData.pZeroOut ; *pZeroOut
0000 fe0000 [3] LDX _startupData:8
100: #endif
101: LDY _startupData.nofZeroOuts ; nofZeroOuts
0003 fd0000 [3] LDY _startupData:6
102: BEQ CopyDown ; if nothing to zero out
0006 270e [3/1] BEQ *+16 ;abs = 0016
103:
104: NextZeroOut: PSHY ; save nofZeroOuts
0008 35 [2] PSHY
105: #ifdef FAR_DATA
106: LDAB 1,X+ ; load page of destination address
107: LDY 2,X+ ; load offset of destination address
108: __PIC_JSR(_SET_PAGE) ; sets the page in the correct page register
109: #else /* FAR_DATA */
110: LDY 2,X+ ; start address and advance *pZeroOut (X = X+4)
0009 ed31 [3] LDY 2,X+
111: #endif /* FAR_DATA */
112: LDD 2,X+ ; byte count
000b ec31 [3] LDD 2,X+
113: #ifdef __OPTIMIZE_FOR_SIZE__ /* -os, default */
114: NextWord: CLR 1,Y+ ; clear memory byte
000d 6970 [2] CLR 1,Y+
115: __FEED_COP_IN_HLI() ; feed the COP if necessary /*lint !e505 !e522 asm code */
116: DBNE D, NextWord ; dec byte count
000f 0434fb [3] DBNE D,*-2 ;abs = 000d
117: #else
118: LSRD ; /2 and save bit 0 in the carry
119: PSHX
120: LDX #0
121: LoopClrW: STX 2,Y+ ; Word-Clear
122: __FEED_COP_IN_HLI() ; feed the COP if necessary /*lint !e505 !e522 asm code */
123: DBNE D, LoopClrW
124: PULX
125: BCC LastClr ; handle last byte
126: CLR 1,Y+
127: LastClr:
128: #endif
129: PULY ; restore nofZeroOuts
0012 31 [3] PULY
130: DEY ; dec nofZeroOuts
0013 03 [1] DEY
131: BNE NextZeroOut
0014 26f2 [3/1] BNE *-12 ;abs = 0008
132: CopyDown:
133: #ifdef __ELF_OBJECT_FILE_FORMAT__
134: LDX _startupData.toCopyDownBeg ; load address of copy down desc.
0016 fe0000 [3] LDX _startupData:10
135: #else
136: LDX _startupData.toCopyDownBeg:2 ; load address of copy down desc.
137: #endif
138: NextBlock:
139: LDD 2,X+ ; size of init-data -> D
0019 ec31 [3] LDD 2,X+
140: BEQ funcInits ; end of copy down desc.
001b 270b [3/1] BEQ *+13 ;abs = 0028
141: #ifdef FAR_DATA
142: PSHD ; save counter
143: LDAB 1,X+ ; load destination page
144: LDY 2,X+ ; destination address
145: __PIC_JSR(_SET_PAGE) ; sets the destinations page register
146: PULD ; restore counter
147: #else /* FAR_DATA */
148: LDY 2,X+ ; load destination address
001d ed31 [3] LDY 2,X+
149: #endif /* FAR_DATA */
150:
151: #ifdef __OPTIMIZE_FOR_SIZE__ /* -os, default */
152: Copy: MOVB 1,X+,1,Y+ ; move a byte from ROM to the data area
001f 180a3070 [5] MOVB 1,X+,1,Y+
153: __FEED_COP_IN_HLI() ; feed the COP if necessary /*lint !e505 !e522 asm code */
154: DBNE D,Copy ; copy-byte loop
0023 0434f9 [3] DBNE D,*-4 ;abs = 001f
155: #else
156: LSRD ; /2 and save bit 0 in the carry
157: Copy: MOVW 2,X+,2,Y+ ; move a word from ROM to the data area
158: __FEED_COP_IN_HLI() ; feed the COP if necessary /*lint !e505 !e522 asm code */
159: DBNE D,Copy ; copy-word loop
160: BCC NextBlock ; handle last byte?
161: MOVB 1,X+,1,Y+ ; copy the last byte
162: #endif
163: BRA NextBlock
0026 20f1 [3] BRA *-13 ;abs = 0019
164: funcInits: ; call of global construtors is only in c++ necessary
165: #if defined(__cplusplus)
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