freemyipod r238 - Code Review

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Repository:freemyipod
Revision:r237‎ | r238 | r239 >
Date:14:32, 31 October 2010
Author:farthen
Status:new
Tags:
Comment:
libembios: moved run from embios.py to libembios.py
Modified paths:
  • /embios/trunk/tools/embios.py (modified) (history)
  • /embios/trunk/tools/libembios.py (modified) (history)

Diff [purge]

Index: embios/trunk/tools/embios.py
@@ -562,34 +562,9 @@
563563 f = open(filename, 'rb')
564564 except IOError:
565565 raise ArgumentError("File not readable. Does it exist?")
566 - try:
567 - appheader = struct.unpack("<8sIIIIIIIIII", f.read(48))
568 - header = appheader[0]
569 - if header != "emBIexec":
570 - raise ArgumentError("The specified file is not an emBIOS application (header)")
571 - baseaddr = appheader[2]
572 - threadnameptr = appheader[8]
573 - f.seek(threadnameptr - baseaddr)
574 - name = ""
575 - while True:
576 - char = f.read(1)
577 - if ord(char) == 0:
578 - break
579 - name += char
580 - usermem = self.embios.getusermemrange()
581 - if usermem.lower > baseaddr or usermem.upper < baseaddr + os.stat(filename).st_size:
582 - raise ArgumentError("The baseaddress of the specified emBIOS application is out of range of the user memory range on the device. Are you sure that this application is compatible with your device?")
583 - self.logger.info("Writing emBIOS application \"" + name + "\" to the memory at " + self._hex(baseaddr) + "...")
584 - f.seek(0)
585 - self.embios.write(baseaddr, f.read())
586 - except IOError:
587 - raise ArgumentError("The specified file is not an emBIOS application (IOError)")
588 - except struct.error:
589 - raise ArgumentError("The specified file is not an emBIOS application (struct.error)")
590 - finally:
591 - f.close()
592 - self.logger.info("done\n")
593 - self.execimage(baseaddr)
 566+ with f:
 567+ data = self.embios.run(f.read())
 568+ self.logger.info("Executed emBIOS application \"" + data.name + "\" at address " + self._hex(data.baseaddr))
594569
595570 @command
596571 def execimage(self, addr):
Index: embios/trunk/tools/libembios.py
@@ -393,6 +393,36 @@
394394 """ Runs the emBIOS app at 'addr' """
395395 return self.lib.monitorcommand(struct.pack("IIII", 21, addr, 0, 0), "III", ("excecimage", None, None))
396396
 397+ def run(self, app):
 398+ """ Uploads and runs the emBIOS app in the string 'app' """
 399+ try:
 400+ appheader = struct.unpack("<8sIIIIIIIIII", app[:48])
 401+ except struct.error:
 402+ raise ArgumentError("The specified file is not an emBIOS application")
 403+ header = appheader[0]
 404+ if header != "emBIexec":
 405+ raise ArgumentError("The specified file is not an emBIOS application")
 406+ baseaddr = appheader[2]
 407+ threadnameptr = appheader[8]
 408+ nameptr = threadnameptr - baseaddr
 409+ name = ""
 410+ while True:
 411+ char = app[nameptr:nameptr+1]
 412+ try:
 413+ if ord(char) == 0:
 414+ break
 415+ except TypeError:
 416+ raise ArgumentError("The specified file is not an emBIOS application")
 417+ name += char
 418+ nameptr += 1
 419+ usermem = self.getusermemrange()
 420+ if usermem.lower > baseaddr or usermem.upper < baseaddr + len(app):
 421+ raise ArgumentError("The baseaddress of the specified emBIOS application is out of range of the user memory range on the device. Are you sure that this application is compatible with your device?")
 422+ self.write(baseaddr, app)
 423+ self.execimage(baseaddr)
 424+ return Bunch(baseaddr=baseaddr, name=name)
 425+
 426+
397427 def bootflashread(self, memaddr, flashaddr, size):
398428 """ Copies the data in the bootflash at 'flashaddr' of the specified size
399429 to the memory at addr 'memaddr'