diff options
Diffstat (limited to 'tools/python/xen/xend/server/cstruct.py')
| -rwxr-xr-x | tools/python/xen/xend/server/cstruct.py | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/tools/python/xen/xend/server/cstruct.py b/tools/python/xen/xend/server/cstruct.py new file mode 100755 index 0000000000..880931b41f --- /dev/null +++ b/tools/python/xen/xend/server/cstruct.py @@ -0,0 +1,269 @@ +import struct + +class Struct: + + maxDepth = 10 + + base = ['x', 'B', 'H', 'I', 'L', 'Q', 'c', 'h', 'i', 'l', 'q', ] + + sizes = {'B': 1, + 'H': 2, + 'I': 4, + 'L': 4, + 'Q': 8, + 'c': 1, + 'h': 2, + 'i': 4, + 'l': 4, + 'q': 8, + 'x': 1, + } + + formats = { + 'int8' : 'B', + 'int16' : 'H', + 'int32' : 'I', + 'int64' : 'Q', + 'u8' : 'B', + 'u16' : 'H', + 'u32' : 'I', + 'u64' : 'Q' + } + + def typedef(self, name, val): + self.formats[name] = val + + def struct(self, name, *f): + self.typedef(name, StructInfo(self, f)) + + def getType(self, name): + return self.formats[name] + + def format(self, ty): + d = 0 + f = ty + while d < self.maxDepth: + d += 1 + f = self.formats[f] + if isinstance(f, StructInfo): + return f.format() + if f in self.base: + return f + return -1 + + def alignedformat(self, ty): + fmt = self.format(ty) + #print 'alignedformat> %s |%s|' %(ty, fmt) + afmt = self.align(fmt) + #print 'alignedformat< %s |%s| |%s|' % (ty, fmt, afmt) + return afmt + + def align(self, fmt): + n1 = 0 + afmt = '' + for a in fmt: + n2 = self.getSize(a) + m = n1 % n2 + if m: + d = (n2 - m) + afmt += 'x' * d + n1 += d + afmt += a + n1 += n2 + return afmt + + def fmtsize(self, fmt): + s = 0 + for f in fmt: + s += self.getSize(f) + return s + + def getSize(self, f): + return self.sizes[f] + + def pack(self, ty, data): + return self.getType(ty).pack(data) + + def unpack(self, ty, data): + return self.getType(ty).unpack(data) + + def show(self): + l = self.formats.keys() + l.sort() + for v in l: + print "%-35s %-10s %s" % (v, self.format(v), self.alignedformat(v)) + + +class StructInfo: + + def __init__(self, s, f): + self.fmt = None + self.structs = s + self.fields = f + + def alignedformat(self): + if self.afmt: return self.afmt + self.afmt = self.structs.align(self.format()) + return self.afmt + + def format(self): + if self.fmt: return self.fmt + fmt = "" + for (ty, name) in self.fields: + fmt += self.formatString(ty) + self.fmt = fmt + return fmt + + def formatString(self, ty): + if ty in self.fields: + ty = self.fields[ty] + return self.structs.format(ty) + + def pack(self, *args): + return struct.pack(self.alignedformat(), *args) + + def unpack(self, data): + return struct.unpack(self.alignedformat(), data) + +types = Struct() + +types.typedef('short' , 'h') +types.typedef('int' , 'i') +types.typedef('long' , 'l') +types.typedef('unsigned short', 'H') +types.typedef('unsigned int' , 'I') +types.typedef('unsigned long' , 'L') +types.typedef('domid_t' , 'u64') +types.typedef('blkif_vdev_t' , 'u16') +types.typedef('blkif_pdev_t' , 'u16') +types.typedef('blkif_sector_t', 'u64') + +types.struct('u8[6]', + ('u8', 'a1'), + ('u8', 'a2'), + ('u8', 'a3'), + ('u8', 'a4'), + ('u8', 'a5'), + ('u8', 'a6')) + +types.struct('blkif_fe_interface_status_changed_t', + ('unsigned int', 'handle'), + ('unsigned int', 'status'), + ('unsigned int', 'evtchn')) + +types.struct('blkif_fe_driver_status_changed_t', + ('unsigned int', 'status'), + ('unsigned int', 'nr_interfaces')) + +types.struct('blkif_fe_interface_connect_t', + ('unsigned int' , 'handle'), + ('unsigned long', 'shmem_frame')) + +types.struct('blkif_fe_interface_disconnect_t', + ('unsigned int', 'handle')) + +types.struct('blkif_extent_t', + ('blkif_pdev_t' , 'device'), + ('blkif_sector_t', 'sector_start'), + ('blkif_sector_t', 'sector_length')) + +types.struct('blkif_be_create_t', + ('domid_t' , 'domid'), + ('unsigned int', 'blkif_handle'), + ('unsigned int', 'status')) + +types.struct('blkif_be_destroy_t', + ('domid_t' , 'domid'), + ('unsigned int', 'blkif_handle'), + ('unsigned int', 'status')) + +types.struct('blkif_be_connect_t', + ('domid_t' , 'domid'), + ('unsigned int' , 'blkif_handle'), + ('unsigned int' , 'evtchn'), + ('unsigned long', 'shmem_frame'), + ('unsigned int' , 'status')) + +types.struct('blkif_be_disconnect_t', + ('domid_t' , 'domid'), + ('unsigned int', 'blkif_handle'), + ('unsigned int', 'status')) + +types.struct('blkif_be_vbd_create_t', + ('domid_t' , 'domid'), #Q + ('unsigned int', 'blkif_handle'), #I + ('blkif_vdev_t', 'vdevice'), #H + ('int' , 'readonly'), #i + ('unsigned int', 'status')) #I + +types.struct('blkif_be_vbd_destroy_t', + ('domid_t' , 'domid'), + ('unsigned int', 'blkif_handle'), + ('blkif_vdev_t', 'vdevice'), + ('unsigned int', 'status')) + +types.struct('blkif_be_vbd_grow_t', + ('domid_t' , 'domid'), #Q + ('unsigned int' , 'blkif_handle'), #I + ('blkif_vdev_t' , 'vdevice'), #H + ('blkif_extent_t', 'extent'), #HQQ + ('unsigned int' , 'status')) #I + +types.struct('blkif_be_vbd_shrink_t', + ('domid_t' , 'domid'), + ('unsigned int', 'blkif_handle'), + ('blkif_vdev_t', 'vdevice'), + ('unsigned int', 'status')) + +types.struct('blkif_be_driver_status_changed_t', + ('unsigned int', 'status'), + ('unsigned int', 'nr_interfaces')) + +types.struct('netif_fe_interface_status_changed_t', + ('unsigned int', 'handle'), + ('unsigned int', 'status'), + ('unsigned int', 'evtchn'), + ('u8[6]', 'mac')) + +types.struct('netif_fe_driver_status_changed_t', + ('unsigned int', 'status'), + ('unsigned int', 'nr_interfaces')) + +types.struct('netif_fe_interface_connect_t', + ('unsigned int', 'handle'), + ('unsigned long', 'tx_shmem_frame'), + ('unsigned long', 'rx_shmem_frame')) + +types.struct('netif_fe_interface_disconnect_t', + ('unsigned int', 'handle')) + +types.struct('netif_be_create_t', + ('domid_t' , 'domid'), + ('unsigned int', 'netif_handle'), + ('u8[6]' , 'mac'), + ('unsigned int', 'status')) + +types.struct('netif_be_destroy_t', + ('domid_t' , 'domid'), + ('unsigned int', 'netif_handle'), + ('unsigned int', 'status')) + +types.struct('netif_be_connect_t', + ('domid_t' , 'domid'), + ('unsigned int' , 'netif_handle'), + ('unsigned int' , 'evtchn'), + ('unsigned long', 'tx_shmem_frame'), + ('unsigned long', 'rx_shmem_frame'), + ('unsigned int' , 'status')) + +types.struct('netif_be_disconnect_t', + ('domid_t' , 'domid'), + ('unsigned int', 'netif_handle'), + ('unsigned int', 'status')) + +types.struct('netif_be_driver_status_changed_t', + ('unsigned int', 'status'), + ('unsigned int', 'nr_interfaces')) + +if 1 or __name__ == "__main__": + types.show() |