Squashed 'yocto-poky/' content from commit ea562de
git-subtree-dir: yocto-poky
git-subtree-split: ea562de57590c966cd5a75fda8defecd397e6436
diff --git a/meta/lib/oe/qa.py b/meta/lib/oe/qa.py
new file mode 100644
index 0000000..d5cdaa0
--- /dev/null
+++ b/meta/lib/oe/qa.py
@@ -0,0 +1,111 @@
+class ELFFile:
+ EI_NIDENT = 16
+
+ EI_CLASS = 4
+ EI_DATA = 5
+ EI_VERSION = 6
+ EI_OSABI = 7
+ EI_ABIVERSION = 8
+
+ # possible values for EI_CLASS
+ ELFCLASSNONE = 0
+ ELFCLASS32 = 1
+ ELFCLASS64 = 2
+
+ # possible value for EI_VERSION
+ EV_CURRENT = 1
+
+ # possible values for EI_DATA
+ ELFDATANONE = 0
+ ELFDATA2LSB = 1
+ ELFDATA2MSB = 2
+
+ def my_assert(self, expectation, result):
+ if not expectation == result:
+ #print "'%x','%x' %s" % (ord(expectation), ord(result), self.name)
+ raise Exception("This does not work as expected")
+
+ def __init__(self, name, bits = 0):
+ self.name = name
+ self.bits = bits
+ self.objdump_output = {}
+
+ def open(self):
+ self.file = file(self.name, "r")
+ self.data = self.file.read(ELFFile.EI_NIDENT+4)
+
+ self.my_assert(len(self.data), ELFFile.EI_NIDENT+4)
+ self.my_assert(self.data[0], chr(0x7f) )
+ self.my_assert(self.data[1], 'E')
+ self.my_assert(self.data[2], 'L')
+ self.my_assert(self.data[3], 'F')
+ if self.bits == 0:
+ if self.data[ELFFile.EI_CLASS] == chr(ELFFile.ELFCLASS32):
+ self.bits = 32
+ elif self.data[ELFFile.EI_CLASS] == chr(ELFFile.ELFCLASS64):
+ self.bits = 64
+ else:
+ # Not 32-bit or 64.. lets assert
+ raise Exception("ELF but not 32 or 64 bit.")
+ elif self.bits == 32:
+ self.my_assert(self.data[ELFFile.EI_CLASS], chr(ELFFile.ELFCLASS32))
+ elif self.bits == 64:
+ self.my_assert(self.data[ELFFile.EI_CLASS], chr(ELFFile.ELFCLASS64))
+ else:
+ raise Exception("Must specify unknown, 32 or 64 bit size.")
+ self.my_assert(self.data[ELFFile.EI_VERSION], chr(ELFFile.EV_CURRENT) )
+
+ self.sex = self.data[ELFFile.EI_DATA]
+ if self.sex == chr(ELFFile.ELFDATANONE):
+ raise Exception("self.sex == ELFDATANONE")
+ elif self.sex == chr(ELFFile.ELFDATA2LSB):
+ self.sex = "<"
+ elif self.sex == chr(ELFFile.ELFDATA2MSB):
+ self.sex = ">"
+ else:
+ raise Exception("Unknown self.sex")
+
+ def osAbi(self):
+ return ord(self.data[ELFFile.EI_OSABI])
+
+ def abiVersion(self):
+ return ord(self.data[ELFFile.EI_ABIVERSION])
+
+ def abiSize(self):
+ return self.bits
+
+ def isLittleEndian(self):
+ return self.sex == "<"
+
+ def isBigEngian(self):
+ return self.sex == ">"
+
+ def machine(self):
+ """
+ We know the sex stored in self.sex and we
+ know the position
+ """
+ import struct
+ (a,) = struct.unpack(self.sex+"H", self.data[18:20])
+ return a
+
+ def run_objdump(self, cmd, d):
+ import bb.process
+ import sys
+
+ if cmd in self.objdump_output:
+ return self.objdump_output[cmd]
+
+ objdump = d.getVar('OBJDUMP', True)
+
+ env = os.environ.copy()
+ env["LC_ALL"] = "C"
+ env["PATH"] = d.getVar('PATH', True)
+
+ try:
+ bb.note("%s %s %s" % (objdump, cmd, self.name))
+ self.objdump_output[cmd] = bb.process.run([objdump, cmd, self.name], env=env, shell=False)[0]
+ return self.objdump_output[cmd]
+ except Exception as e:
+ bb.note("%s %s %s failed: %s" % (objdump, cmd, self.name, e))
+ return ""