feaa89a1bc
This patch adds support for AArch64 to the syscall interface. The kernel implementation exports a set of canonical syscalls, therefore some of the userspace exported syscalls are implemented as stubs based on the canonical set. Change-Id: Ia965d71e97769b8be9d7655193fc40303964c4df Signed-off-by: Serban Constantinescu <serban.constantinescu@arm.com>
166 lines
4.6 KiB
Python
166 lines
4.6 KiB
Python
# common python utility routines for the Bionic tool scripts
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import sys, os, commands, string
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all_arches = [ "aarch64", "arm", "mips", "x86", "x86_64" ]
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# basic debugging trace support
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# call D_setlevel to set the verbosity level
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# and D(), D2(), D3(), D4() to add traces
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#
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verbose = 0
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def D(msg):
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global verbose
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if verbose > 0:
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print msg
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def D2(msg):
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global verbose
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if verbose >= 2:
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print msg
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def D3(msg):
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global verbose
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if verbose >= 3:
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print msg
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def D4(msg):
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global verbose
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if verbose >= 4:
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print msg
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def D_setlevel(level):
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global verbose
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verbose = level
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# parser for the SYSCALLS.TXT file
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#
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class SysCallsTxtParser:
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def __init__(self):
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self.syscalls = []
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self.lineno = 0
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def E(self, msg):
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print "%d: %s" % (self.lineno, msg)
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def parse_line(self, line):
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""" parse a syscall spec line.
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line processing, format is
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return type func_name[|alias_list][:syscall_name[:socketcall_id]] ( [paramlist] ) architecture_list
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"""
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pos_lparen = line.find('(')
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E = self.E
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if pos_lparen < 0:
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E("missing left parenthesis in '%s'" % line)
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return
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pos_rparen = line.rfind(')')
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if pos_rparen < 0 or pos_rparen <= pos_lparen:
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E("missing or misplaced right parenthesis in '%s'" % line)
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return
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return_type = line[:pos_lparen].strip().split()
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if len(return_type) < 2:
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E("missing return type in '%s'" % line)
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return
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syscall_func = return_type[-1]
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return_type = string.join(return_type[:-1],' ')
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socketcall_id = -1
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pos_colon = syscall_func.find(':')
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if pos_colon < 0:
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syscall_name = syscall_func
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else:
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if pos_colon == 0 or pos_colon+1 >= len(syscall_func):
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E("misplaced colon in '%s'" % line)
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return
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# now find if there is a socketcall_id for a dispatch-type syscall
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# after the optional 2nd colon
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pos_colon2 = syscall_func.find(':', pos_colon + 1)
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if pos_colon2 < 0:
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syscall_name = syscall_func[pos_colon+1:]
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syscall_func = syscall_func[:pos_colon]
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else:
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if pos_colon2+1 >= len(syscall_func):
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E("misplaced colon2 in '%s'" % line)
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return
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syscall_name = syscall_func[(pos_colon+1):pos_colon2]
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socketcall_id = int(syscall_func[pos_colon2+1:])
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syscall_func = syscall_func[:pos_colon]
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alias_delim = syscall_func.find('|')
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if alias_delim > 0:
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alias_list = syscall_func[alias_delim+1:].strip()
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syscall_func = syscall_func[:alias_delim]
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alias_delim = syscall_name.find('|')
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if alias_delim > 0:
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syscall_name = syscall_name[:alias_delim]
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syscall_aliases = string.split(alias_list, ',')
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else:
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syscall_aliases = []
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if pos_rparen > pos_lparen+1:
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syscall_params = line[pos_lparen+1:pos_rparen].split(',')
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params = string.join(syscall_params,',')
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else:
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syscall_params = []
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params = "void"
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t = {
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"name" : syscall_name,
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"func" : syscall_func,
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"aliases" : syscall_aliases,
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"params" : syscall_params,
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"decl" : "%-15s %s (%s);" % (return_type, syscall_func, params),
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"socketcall_id" : socketcall_id
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}
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# Parse the architecture list.
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arch_list = line[pos_rparen+1:].strip()
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if arch_list == "all":
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for arch in all_arches:
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t[arch] = True
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else:
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for arch in string.split(arch_list, ','):
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if arch in all_arches:
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t[arch] = True
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else:
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E("invalid syscall architecture list in '%s'" % line)
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return
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self.syscalls.append(t)
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global verbose
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if verbose >= 2:
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print t
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def parse_file(self, file_path):
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D2("parse_file: %s" % file_path)
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fp = open(file_path)
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for line in fp.xreadlines():
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self.lineno += 1
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line = line.strip()
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if not line: continue
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if line[0] == '#': continue
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self.parse_line(line)
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fp.close()
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class StringOutput:
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def __init__(self):
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self.line = ""
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def write(self,msg):
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self.line += msg
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D2("write '%s'" % msg)
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def get(self):
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return self.line
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