1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
/* This small function uses all the arithmetic operators that
libgcc1.c can handle. If you can link it, then
you have provided replacements for all the libgcc1.c functions that
your target machine needs. */
int foo ();
double dfoo ();
/* We don't want __main here because that can drag in atexit (among other
things) which won't necessarily exist yet. */
main_without__main ()
{
int a = foo (), b = foo ();
unsigned int au = foo (), bu = foo ();
float af = dfoo (), bf = dfoo ();
double ad = dfoo (), bd = dfoo ();
discard (a * b);
discard (a / b);
discard (a % b);
discard (au / bu);
discard (au % bu);
discard (a >> b);
discard (a << b);
discard (au >> bu);
discard (au << bu);
ddiscard (ad + bd);
ddiscard (ad - bd);
ddiscard (ad * bd);
ddiscard (ad / bd);
ddiscard (-ad);
ddiscard (af + bf);
ddiscard (af - bf);
ddiscard (af * bf);
ddiscard (af / bf);
ddiscard (-af);
discard ((int) ad);
discard ((int) af);
ddiscard ((double) a);
ddiscard ((float) a);
ddiscard ((float) ad);
discard (ad == bd);
discard (ad < bd);
discard (ad > bd);
discard (ad != bd);
discard (ad <= bd);
discard (ad >= bd);
discard (af == bf);
discard (af < bf);
discard (af > bf);
discard (af != bf);
discard (af <= bf);
discard (af >= bf);
return 0;
}
discard (x)
int x;
{}
ddiscard (x)
double x;
{}
foo ()
{
static int table[] = {20, 69, 4, 12};
static int idx;
return table[idx++];
}
double
dfoo ()
{
static double table[] = {20.4, 69.96, 4.4, 202.202};
static int idx;
return table[idx++];
}
/* Provide functions that some versions of the linker use to default
the start address if -e symbol is not used, to avoid the warning
message saying the start address is defaulted. */
extern void start() __asm__("start");
extern void _start() __asm__("_start");
extern void __start() __asm__("__start");
/* Provide functions that might be needed by soft-float emulation routines. */
void memcpy() {}
void start() {}
void _start() {}
void __start() {}
void mainCRTStartup() {}
|
