http://sourceware.org/bugzilla/show_bug.cgi?id=12049
H.J. Lu <hjl.tools at gmail dot com> changed:
What |Removed |Added
----------------------------------------------------------------------------
Status|NEW |RESOLVED
Resolution| |WONTFIX
--- Comment #6 from H.J. Lu <hjl.tools at gmail dot com> 2010-10-14 13:37:11
UTC ---
This is due to relaxation between alignment directives and branch
instructions. There is no easy way to fix all cases. I checked in a
patch to support .d32 suffix to force 32bit displacement. You can do
[...@gnu-6 pr12049]$ cat test3.s
.fill 56, 1, 0x90
jne.d32 .LBB0_43
.fill 10, 1, 0x90
jne .LBB0_43
.fill 5, 1, 0x90
.align 16, 0x90
.fill 118, 1, 0x90
.LBB0_43:
[...@gnu-6 pr12049]$ ./as -o test3.o test3.s
[...@gnu-6 pr12049]$ objdump -dw test3.o
test3.o: file format elf64-x86-64
Disassembly of section .text:
0000000000000000 <.text>:
0: 90 nop
1: 90 nop
2: 90 nop
3: 90 nop
4: 90 nop
5: 90 nop
6: 90 nop
7: 90 nop
8: 90 nop
9: 90 nop
a: 90 nop
b: 90 nop
c: 90 nop
d: 90 nop
e: 90 nop
f: 90 nop
10: 90 nop
11: 90 nop
12: 90 nop
13: 90 nop
14: 90 nop
15: 90 nop
16: 90 nop
17: 90 nop
18: 90 nop
19: 90 nop
1a: 90 nop
1b: 90 nop
1c: 90 nop
1d: 90 nop
1e: 90 nop
1f: 90 nop
20: 90 nop
21: 90 nop
22: 90 nop
23: 90 nop
24: 90 nop
25: 90 nop
26: 90 nop
27: 90 nop
28: 90 nop
29: 90 nop
2a: 90 nop
2b: 90 nop
2c: 90 nop
2d: 90 nop
2e: 90 nop
2f: 90 nop
30: 90 nop
31: 90 nop
32: 90 nop
33: 90 nop
34: 90 nop
35: 90 nop
36: 90 nop
37: 90 nop
38: 0f 85 88 00 00 00 jne 0xc6
3e: 90 nop
3f: 90 nop
40: 90 nop
41: 90 nop
42: 90 nop
43: 90 nop
44: 90 nop
45: 90 nop
46: 90 nop
47: 90 nop
48: 75 7c jne 0xc6
4a: 90 nop
4b: 90 nop
4c: 90 nop
4d: 90 nop
4e: 90 nop
4f: 90 nop
50: 90 nop
51: 90 nop
52: 90 nop
53: 90 nop
54: 90 nop
55: 90 nop
56: 90 nop
57: 90 nop
58: 90 nop
59: 90 nop
5a: 90 nop
5b: 90 nop
5c: 90 nop
5d: 90 nop
5e: 90 nop
5f: 90 nop
60: 90 nop
61: 90 nop
62: 90 nop
63: 90 nop
64: 90 nop
65: 90 nop
66: 90 nop
67: 90 nop
68: 90 nop
69: 90 nop
6a: 90 nop
6b: 90 nop
6c: 90 nop
6d: 90 nop
6e: 90 nop
6f: 90 nop
70: 90 nop
71: 90 nop
72: 90 nop
73: 90 nop
74: 90 nop
75: 90 nop
76: 90 nop
77: 90 nop
78: 90 nop
79: 90 nop
7a: 90 nop
7b: 90 nop
7c: 90 nop
7d: 90 nop
7e: 90 nop
7f: 90 nop
80: 90 nop
81: 90 nop
82: 90 nop
83: 90 nop
84: 90 nop
85: 90 nop
86: 90 nop
87: 90 nop
88: 90 nop
89: 90 nop
8a: 90 nop
8b: 90 nop
8c: 90 nop
8d: 90 nop
8e: 90 nop
8f: 90 nop
90: 90 nop
91: 90 nop
92: 90 nop
93: 90 nop
94: 90 nop
95: 90 nop
96: 90 nop
97: 90 nop
98: 90 nop
99: 90 nop
9a: 90 nop
9b: 90 nop
9c: 90 nop
9d: 90 nop
9e: 90 nop
9f: 90 nop
a0: 90 nop
a1: 90 nop
a2: 90 nop
a3: 90 nop
a4: 90 nop
a5: 90 nop
a6: 90 nop
a7: 90 nop
a8: 90 nop
a9: 90 nop
aa: 90 nop
ab: 90 nop
ac: 90 nop
ad: 90 nop
ae: 90 nop
af: 90 nop
b0: 90 nop
b1: 90 nop
b2: 90 nop
b3: 90 nop
b4: 90 nop
b5: 90 nop
b6: 90 nop
b7: 90 nop
b8: 90 nop
b9: 90 nop
ba: 90 nop
bb: 90 nop
bc: 90 nop
bd: 90 nop
be: 90 nop
bf: 90 nop
c0: 90 nop
c1: 90 nop
c2: 90 nop
c3: 90 nop
c4: 90 nop
c5: 90 nop
[...@gnu-6 pr12049]$
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