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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [sh/] [crt0.S] - Blame information for rev 816

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#ifdef __SH5__
        .section .data,"aw"
        .global ___data
___data:
 
        .section .rodata,"a"
        .global ___rodata
___rodata:
 
#if __SH5__ == 64
        .section .text,"ax"
#define LOAD_ADDR(sym, reg) \
        movi    (sym >> 48) & 65535, reg; \
        shori   (sym >> 32) & 65535, reg; \
        shori   (sym >> 16) & 65535, reg; \
        shori   sym & 65535, reg
#else
        .mode   SHmedia
        .section .text..SHmedia32,"ax"
#define LOAD_ADDR(sym, reg) \
        movi    (sym >> 16) & 65535, reg; \
        shori   sym & 65535, reg
#endif
        .global start
start:
        LOAD_ADDR (_stack, r15)
 
        pt/l    zero_bss_loop, tr0
        pt/l    _atexit, tr1
        pt/l    _init, tr5
        pt/l    _main, tr6
        pt/l    _exit, tr7
 
        ! zero out bss
        LOAD_ADDR (_edata, r0)
        LOAD_ADDR (_end, r1)
zero_bss_loop:
        stx.q   r0, r63, r63
        addi    r0, 8, r0
        bgt/l   r1, r0, tr0
 
        LOAD_ADDR (___data, r26)
        LOAD_ADDR (___rodata, r27)
 
#if ! __SH4_NOFPU__
        getcon  cr0, r0
        movi    1, r1
        shlli   r1, 15, r1
        or      r1, r0, r0
        putcon  r0, cr0
#endif
 
        ! arrange for exit to call fini
        LOAD_ADDR (_fini, r2)
        blink   tr1, r18
 
        ! call init
        blink   tr5, r18
 
        ! call the mainline
        blink   tr6, r18
 
        ! call exit
        blink   tr7, r18
#else
        .section .text
        .global start
start:
        mov.l   stack_k,r15
 
        ! zero out bss
        mov.l   edata_k,r0
        mov.l   end_k,r1
        mov     #0,r2
start_l:
         mov.l  r2,@r0
        add     #4,r0
        cmp/ge  r0,r1
        bt      start_l
 
#ifndef __SH2A_NOFPU__
#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY) || defined(__SH2A__)
        mov.l set_fpscr_k, r1
        jsr @r1
        mov #0,r4
        lds r3,fpscr
#endif /*  defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) || defined(__SH2A__) */
#endif /* !__SH2A_NOFPU__ */
 
        ! call the mainline
        mov.l   main_k,r0
        jsr     @r0
        or      r0,r0
 
        ! call exit
        mov     r0,r4
        mov.l   exit_k,r0
        jsr     @r0
        or      r0,r0
 
        .align 2
#ifndef __SH2A_NOFPU__
#if defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(__SH4_SINGLE_ONLY__) || defined(__SH2A__)
set_fpscr_k:
        .long   ___set_fpscr
#endif /*  defined (__SH3E__) || defined(__SH4_SINGLE__) || defined(__SH4__) || defined(SH4_SINGLE_ONLY) || defined(__SH2A__) */
#endif /* !__SH2A_NOFPU__ */
stack_k:
        .long   _stack
edata_k:
        .long   _edata
end_k:
        .long   _end
main_k:
        .long   _main
exit_k:
        .long   _exit
#endif

Line No.	Rev	Author	Line
1	148	jeremybenn
2			`#ifdef __SH5__`
3			`.section .data,"aw"`
4			`.global ___data`
5			`___data:`
6
7			`.section .rodata,"a"`
8			`.global ___rodata`
9			`___rodata:`
10
11			`#if __SH5__ == 64`
12			`.section .text,"ax"`
13			`#define LOAD_ADDR(sym, reg) \`
14			`movi (sym >> 48) & 65535, reg; \`
15			`shori (sym >> 32) & 65535, reg; \`
16			`shori (sym >> 16) & 65535, reg; \`
17			`shori sym & 65535, reg`
18			`#else`
19			`.mode SHmedia`
20			`.section .text..SHmedia32,"ax"`
21			`#define LOAD_ADDR(sym, reg) \`
22			`movi (sym >> 16) & 65535, reg; \`
23			`shori sym & 65535, reg`
24			`#endif`
25			`.global start`
26			`start:`
27			`LOAD_ADDR (_stack, r15)`
28
29			`pt/l zero_bss_loop, tr0`
30			`pt/l _atexit, tr1`
31			`pt/l _init, tr5`
32			`pt/l _main, tr6`
33			`pt/l _exit, tr7`
34
35			`! zero out bss`
36			`LOAD_ADDR (_edata, r0)`
37			`LOAD_ADDR (_end, r1)`
38			`zero_bss_loop:`
39			`stx.q r0, r63, r63`
40			`addi r0, 8, r0`
41			`bgt/l r1, r0, tr0`
42
43			`LOAD_ADDR (___data, r26)`
44			`LOAD_ADDR (___rodata, r27)`
45
46			`#if ! __SH4_NOFPU__`
47			`getcon cr0, r0`
48			`movi 1, r1`
49			`shlli r1, 15, r1`
50			`or r1, r0, r0`
51			`putcon r0, cr0`
52			`#endif`
53
54			`! arrange for exit to call fini`
55			`LOAD_ADDR (_fini, r2)`
56			`blink tr1, r18`
57
58			`! call init`
59			`blink tr5, r18`
60
61			`! call the mainline`
62			`blink tr6, r18`
63
64			`! call exit`
65			`blink tr7, r18`
66			`#else`
67			`.section .text`
68			`.global start`
69			`start:`
70			`mov.l stack_k,r15`
71
72			`! zero out bss`
73			`mov.l edata_k,r0`
74			`mov.l end_k,r1`
75			`mov #0,r2`
76			`start_l:`
77			`mov.l r2,@r0`
78			`add #4,r0`
79			`cmp/ge r0,r1`
80			`bt start_l`
81
82			`#ifndef __SH2A_NOFPU__`
83			`#if defined (__SH3E__) \|\| defined(__SH4_SINGLE__) \|\| defined(__SH4__) \|\| defined(__SH4_SINGLE_ONLY) \|\| defined(__SH2A__)`
84			`mov.l set_fpscr_k, r1`
85			`jsr @r1`
86			`mov #0,r4`
87			`lds r3,fpscr`
88			`#endif /* defined (__SH3E__) \|\| defined(__SH4_SINGLE__) \|\| defined(__SH4__) \|\| defined(__SH4_SINGLE_ONLY__) \|\| defined(__SH2A__) */`
89			`#endif /* !__SH2A_NOFPU__ */`
90
91			`! call the mainline`
92			`mov.l main_k,r0`
93			`jsr @r0`
94			`or r0,r0`
95
96			`! call exit`
97			`mov r0,r4`
98			`mov.l exit_k,r0`
99			`jsr @r0`
100			`or r0,r0`
101
102			`.align 2`
103			`#ifndef __SH2A_NOFPU__`
104			`#if defined (__SH3E__) \|\| defined(__SH4_SINGLE__) \|\| defined(__SH4__) \|\| defined(__SH4_SINGLE_ONLY__) \|\| defined(__SH2A__)`
105			`set_fpscr_k:`
106			`.long ___set_fpscr`
107			`#endif /* defined (__SH3E__) \|\| defined(__SH4_SINGLE__) \|\| defined(__SH4__) \|\| defined(SH4_SINGLE_ONLY) \|\| defined(__SH2A__) */`
108			`#endif /* !__SH2A_NOFPU__ */`
109			`stack_k:`
110			`.long _stack`
111			`edata_k:`
112			`.long _edata`
113			`end_k:`
114			`.long _end`
115			`main_k:`
116			`.long _main`
117			`exit_k:`
118			`.long _exit`
119			`#endif`

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[/] [openrisc/] [trunk/] [gnu-old/] [newlib-1.17.0/] [newlib/] [libc/] [sys/] [sh/] [crt0.S] - Blame information for rev 816