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[/] [softavrcore/] [trunk/] [build/] [crt0.s] - Blame information for rev 2

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;=============================================================================;
 
.set    PINB,   0x16
 
.set    VECTOR_SIZE,    2
.set    VECTOR_WIDTH,   2
 
.set    VECTOR_NUM,     1<<VECTOR_WIDTH
.set    AVR_REG_SIZE,   0x0020
.set    AVR_IO_SIZE,    0x0040
.set    RAM_SIZE,       0x0200
 
;=============================================================================;
 
.set    _RAMEND_ADDR,   AVR_REG_SIZE + AVR_IO_SIZE + RAM_SIZE
.set    _VECTORS_SIZE,  VECTOR_SIZE * VECTOR_NUM
.set    __stack_pointer, _RAMEND_ADDR - 1
.set    AVR_STACK_POINTER_LO_ADDR, 0x3d
.set    AVR_STACK_POINTER_HI_ADDR, 0x3e
.set    AVR_SREG_ADDR, 0x3f
 
.macro  XJMP name
        .if (VECTOR_SIZE == 2)
        rjmp    \name
        .elseif (VECTOR_SIZE == 4)
        jmp     \name
        .else
        nop
        .endif
.endm
 
.macro  XCALL name
        .if (VECTOR_SIZE == 2)
        rcall   \name
        .elseif (VECTOR_SIZE == 4)
        call    \name
        .else
        nop
        .endif
.endm
 
.macro  vector name
        .if (. - __vectors < _VECTORS_SIZE)
        .weak   \name
        .set    \name, __bad_interrupt
        XJMP    \name
        .endif
.endm
 
.section .vectors,"ax",@progbits
        .global __vectors
        .func   __vectors
 
__vectors:
 
        ;in     r16, PINB
        ;ldi    r16, 0xC0
        ;out    0x04, r16
        ;rjmp   __vectors
 
        XJMP    __init
        vector  __vector_1
        vector  __vector_2
        vector  __vector_3
        vector  __vector_4
        vector  __vector_5
        vector  __vector_6
        vector  __vector_7
        vector  __vector_8
        vector  __vector_9
        vector  __vector_10
        vector  __vector_11
        vector  __vector_12
        vector  __vector_13
        vector  __vector_14
        vector  __vector_15
        .endfunc
 
        .global __bad_interrupt
        .func   __bad_interrupt
__bad_interrupt:
        .weak   __vector_default
        .set    __vector_default, __bad_interrupt
        rjmp    __vector_default
        .endfunc
 
__init:
 
        eor     r1, r1
        out     AVR_SREG_ADDR, r1
        ldi     r28,lo8(__stack_pointer)
        out     AVR_STACK_POINTER_LO_ADDR, r28
        ldi     r29,hi8(__stack_pointer)
        out     AVR_STACK_POINTER_HI_ADDR, r29
 
.section .init9,"ax",@progbits
 
        XCALL   main
        XJMP    exit

Line No.	Rev	Author	Line
1	2	apal	`;=============================================================================;`
2
3			`.set PINB, 0x16`
4
5			`.set VECTOR_SIZE, 2`
6			`.set VECTOR_WIDTH, 2`
7
8			`.set VECTOR_NUM, 1<<VECTOR_WIDTH`
9			`.set AVR_REG_SIZE, 0x0020`
10			`.set AVR_IO_SIZE, 0x0040`
11			`.set RAM_SIZE, 0x0200`
12
13			`;=============================================================================;`
14
15			`.set _RAMEND_ADDR, AVR_REG_SIZE + AVR_IO_SIZE + RAM_SIZE`
16			`.set _VECTORS_SIZE, VECTOR_SIZE * VECTOR_NUM`
17			`.set __stack_pointer, _RAMEND_ADDR - 1`
18			`.set AVR_STACK_POINTER_LO_ADDR, 0x3d`
19			`.set AVR_STACK_POINTER_HI_ADDR, 0x3e`
20			`.set AVR_SREG_ADDR, 0x3f`
21
22			`.macro XJMP name`
23			`.if (VECTOR_SIZE == 2)`
24			`rjmp \name`
25			`.elseif (VECTOR_SIZE == 4)`
26			`jmp \name`
27			`.else`
28			`nop`
29			`.endif`
30			`.endm`
31
32			`.macro XCALL name`
33			`.if (VECTOR_SIZE == 2)`
34			`rcall \name`
35			`.elseif (VECTOR_SIZE == 4)`
36			`call \name`
37			`.else`
38			`nop`
39			`.endif`
40			`.endm`
41
42			`.macro vector name`
43			`.if (. - __vectors < _VECTORS_SIZE)`
44			`.weak \name`
45			`.set \name, __bad_interrupt`
46			`XJMP \name`
47			`.endif`
48			`.endm`
49
50			`.section .vectors,"ax",@progbits`
51			`.global __vectors`
52			`.func __vectors`
53
54			`__vectors:`
55
56			`;in r16, PINB`
57			`;ldi r16, 0xC0`
58			`;out 0x04, r16`
59			`;rjmp __vectors`
60
61			`XJMP __init`
62			`vector __vector_1`
63			`vector __vector_2`
64			`vector __vector_3`
65			`vector __vector_4`
66			`vector __vector_5`
67			`vector __vector_6`
68			`vector __vector_7`
69			`vector __vector_8`
70			`vector __vector_9`
71			`vector __vector_10`
72			`vector __vector_11`
73			`vector __vector_12`
74			`vector __vector_13`
75			`vector __vector_14`
76			`vector __vector_15`
77			`.endfunc`
78
79			`.global __bad_interrupt`
80			`.func __bad_interrupt`
81			`__bad_interrupt:`
82			`.weak __vector_default`
83			`.set __vector_default, __bad_interrupt`
84			`rjmp __vector_default`
85			`.endfunc`
86
87			`__init:`
88
89			`eor r1, r1`
90			`out AVR_SREG_ADDR, r1`
91			`ldi r28,lo8(__stack_pointer)`
92			`out AVR_STACK_POINTER_LO_ADDR, r28`
93			`ldi r29,hi8(__stack_pointer)`
94			`out AVR_STACK_POINTER_HI_ADDR, r29`
95
96			`.section .init9,"ax",@progbits`
97
98			`XCALL main`
99			`XJMP exit`

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[/] [softavrcore/] [trunk/] [build/] [crt0.s] - Blame information for rev 2