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author | Adrian Dudau <adrian.dudau@enea.com> | 2013-12-12 13:38:32 +0100 |
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committer | Adrian Dudau <adrian.dudau@enea.com> | 2013-12-12 13:50:20 +0100 |
commit | e2e6f6fe07049f33cb6348780fa975162752e421 (patch) | |
tree | b1813295411235d1297a0ed642b1346b24fdfb12 /meta/lib/oe/qa.py | |
download | poky-e2e6f6fe07049f33cb6348780fa975162752e421.tar.gz |
initial commit of Enea Linux 3.1
Migrated from the internal git server on the dora-enea branch
Signed-off-by: Adrian Dudau <adrian.dudau@enea.com>
Diffstat (limited to 'meta/lib/oe/qa.py')
-rw-r--r-- | meta/lib/oe/qa.py | 111 |
1 files changed, 111 insertions, 0 deletions
diff --git a/meta/lib/oe/qa.py b/meta/lib/oe/qa.py new file mode 100644 index 0000000000..d5cdaa0fcd --- /dev/null +++ b/meta/lib/oe/qa.py | |||
@@ -0,0 +1,111 @@ | |||
1 | class ELFFile: | ||
2 | EI_NIDENT = 16 | ||
3 | |||
4 | EI_CLASS = 4 | ||
5 | EI_DATA = 5 | ||
6 | EI_VERSION = 6 | ||
7 | EI_OSABI = 7 | ||
8 | EI_ABIVERSION = 8 | ||
9 | |||
10 | # possible values for EI_CLASS | ||
11 | ELFCLASSNONE = 0 | ||
12 | ELFCLASS32 = 1 | ||
13 | ELFCLASS64 = 2 | ||
14 | |||
15 | # possible value for EI_VERSION | ||
16 | EV_CURRENT = 1 | ||
17 | |||
18 | # possible values for EI_DATA | ||
19 | ELFDATANONE = 0 | ||
20 | ELFDATA2LSB = 1 | ||
21 | ELFDATA2MSB = 2 | ||
22 | |||
23 | def my_assert(self, expectation, result): | ||
24 | if not expectation == result: | ||
25 | #print "'%x','%x' %s" % (ord(expectation), ord(result), self.name) | ||
26 | raise Exception("This does not work as expected") | ||
27 | |||
28 | def __init__(self, name, bits = 0): | ||
29 | self.name = name | ||
30 | self.bits = bits | ||
31 | self.objdump_output = {} | ||
32 | |||
33 | def open(self): | ||
34 | self.file = file(self.name, "r") | ||
35 | self.data = self.file.read(ELFFile.EI_NIDENT+4) | ||
36 | |||
37 | self.my_assert(len(self.data), ELFFile.EI_NIDENT+4) | ||
38 | self.my_assert(self.data[0], chr(0x7f) ) | ||
39 | self.my_assert(self.data[1], 'E') | ||
40 | self.my_assert(self.data[2], 'L') | ||
41 | self.my_assert(self.data[3], 'F') | ||
42 | if self.bits == 0: | ||
43 | if self.data[ELFFile.EI_CLASS] == chr(ELFFile.ELFCLASS32): | ||
44 | self.bits = 32 | ||
45 | elif self.data[ELFFile.EI_CLASS] == chr(ELFFile.ELFCLASS64): | ||
46 | self.bits = 64 | ||
47 | else: | ||
48 | # Not 32-bit or 64.. lets assert | ||
49 | raise Exception("ELF but not 32 or 64 bit.") | ||
50 | elif self.bits == 32: | ||
51 | self.my_assert(self.data[ELFFile.EI_CLASS], chr(ELFFile.ELFCLASS32)) | ||
52 | elif self.bits == 64: | ||
53 | self.my_assert(self.data[ELFFile.EI_CLASS], chr(ELFFile.ELFCLASS64)) | ||
54 | else: | ||
55 | raise Exception("Must specify unknown, 32 or 64 bit size.") | ||
56 | self.my_assert(self.data[ELFFile.EI_VERSION], chr(ELFFile.EV_CURRENT) ) | ||
57 | |||
58 | self.sex = self.data[ELFFile.EI_DATA] | ||
59 | if self.sex == chr(ELFFile.ELFDATANONE): | ||
60 | raise Exception("self.sex == ELFDATANONE") | ||
61 | elif self.sex == chr(ELFFile.ELFDATA2LSB): | ||
62 | self.sex = "<" | ||
63 | elif self.sex == chr(ELFFile.ELFDATA2MSB): | ||
64 | self.sex = ">" | ||
65 | else: | ||
66 | raise Exception("Unknown self.sex") | ||
67 | |||
68 | def osAbi(self): | ||
69 | return ord(self.data[ELFFile.EI_OSABI]) | ||
70 | |||
71 | def abiVersion(self): | ||
72 | return ord(self.data[ELFFile.EI_ABIVERSION]) | ||
73 | |||
74 | def abiSize(self): | ||
75 | return self.bits | ||
76 | |||
77 | def isLittleEndian(self): | ||
78 | return self.sex == "<" | ||
79 | |||
80 | def isBigEngian(self): | ||
81 | return self.sex == ">" | ||
82 | |||
83 | def machine(self): | ||
84 | """ | ||
85 | We know the sex stored in self.sex and we | ||
86 | know the position | ||
87 | """ | ||
88 | import struct | ||
89 | (a,) = struct.unpack(self.sex+"H", self.data[18:20]) | ||
90 | return a | ||
91 | |||
92 | def run_objdump(self, cmd, d): | ||
93 | import bb.process | ||
94 | import sys | ||
95 | |||
96 | if cmd in self.objdump_output: | ||
97 | return self.objdump_output[cmd] | ||
98 | |||
99 | objdump = d.getVar('OBJDUMP', True) | ||
100 | |||
101 | env = os.environ.copy() | ||
102 | env["LC_ALL"] = "C" | ||
103 | env["PATH"] = d.getVar('PATH', True) | ||
104 | |||
105 | try: | ||
106 | bb.note("%s %s %s" % (objdump, cmd, self.name)) | ||
107 | self.objdump_output[cmd] = bb.process.run([objdump, cmd, self.name], env=env, shell=False)[0] | ||
108 | return self.objdump_output[cmd] | ||
109 | except Exception as e: | ||
110 | bb.note("%s %s %s failed: %s" % (objdump, cmd, self.name, e)) | ||
111 | return "" | ||