--- /dev/null
+#!/usr/bin/python
+# Copyright (C) 2011 Red Hat, Inc., Michael S. Tsirkin <mst@redhat.com>
+#
+# This file may be distributed under the terms of the GNU GPLv3 license.
+
+# Process mixed ASL/AML listing (.lst file) produced by iasl -l
+# Locate and execute ACPI_EXTRACT directives, output offset info
+#
+# Documentation of ACPI_EXTRACT_* directive tags:
+#
+# These directive tags output offset information from AML for BIOS runtime
+# table generation.
+# Each directive is of the form:
+# ACPI_EXTRACT_<TYPE> <array_name> <Operator> (...)
+# and causes the extractor to create an array
+# named <array_name> with offset, in the generated AML,
+# of an object of a given type in the following <Operator>.
+#
+# A directive must fit on a single code line.
+#
+# Object type in AML is verified, a mismatch causes a build failure.
+#
+# Directives and operators currently supported are:
+# ACPI_EXTRACT_NAME_DWORD_CONST - extract a Dword Const object from Name()
+# ACPI_EXTRACT_NAME_WORD_CONST - extract a Word Const object from Name()
+# ACPI_EXTRACT_NAME_BYTE_CONST - extract a Byte Const object from Name()
+# ACPI_EXTRACT_METHOD_STRING - extract a NameString from Method()
+# ACPI_EXTRACT_NAME_STRING - extract a NameString from Name()
+# ACPI_EXTRACT_PROCESSOR_START - start of Processor() block
+# ACPI_EXTRACT_PROCESSOR_STRING - extract a NameString from Processor()
+# ACPI_EXTRACT_PROCESSOR_END - offset at last byte of Processor() + 1
+#
+# ACPI_EXTRACT is not allowed anywhere else in code, except in comments.
+
+import re;
+import sys;
+import fileinput;
+
+aml = []
+asl = []
+output = {}
+debug = ""
+
+class asl_line:
+ line = None
+ lineno = None
+ aml_offset = None
+
+def die(diag):
+ sys.stderr.write("Error: %s; %s\n" % (diag, debug))
+ sys.exit(1)
+
+#Store an ASL command, matching AML offset, and input line (for debugging)
+def add_asl(lineno, line):
+ l = asl_line()
+ l.line = line
+ l.lineno = lineno
+ l.aml_offset = len(aml)
+ asl.append(l)
+
+#Store an AML byte sequence
+#Verify that offset output by iasl matches # of bytes so far
+def add_aml(offset, line):
+ o = int(offset, 16);
+ # Sanity check: offset must match size of code so far
+ if (o != len(aml)):
+ die("Offset 0x%x != 0x%x" % (o, len(aml)))
+ # Strip any trailing dots and ASCII dump after "
+ line = re.sub(r'\s*\.*\s*".*$',"", line)
+ # Strip traling whitespace
+ line = re.sub(r'\s+$',"", line)
+ # Strip leading whitespace
+ line = re.sub(r'^\s+',"", line)
+ # Split on whitespace
+ code = re.split(r'\s+', line)
+ for c in code:
+ # Require a legal hex number, two digits
+ if (not(re.search(r'^[0-9A-Fa-f][0-9A-Fa-f]$', c))):
+ die("Unexpected octet %s" % c);
+ aml.append(int(c, 16));
+
+# Process aml bytecode array, decoding AML
+def aml_pkglen_bytes(offset):
+ # PkgLength can be multibyte. Bits 8-7 give the # of extra bytes.
+ pkglenbytes = aml[offset] >> 6;
+ return pkglenbytes + 1
+
+def aml_pkglen(offset):
+ pkgstart = offset
+ pkglenbytes = aml_pkglen_bytes(offset)
+ pkglen = aml[offset] & 0x3F
+ # If multibyte, first nibble only uses bits 0-3
+ if ((pkglenbytes > 0) and (pkglen & 0x30)):
+ die("PkgLen bytes 0x%x but first nibble 0x%x expected 0x0X" %
+ (pkglen, pkglen))
+ offset += 1
+ pkglenbytes -= 1
+ for i in range(pkglenbytes):
+ pkglen |= aml[offset + i] << (i * 8 + 4)
+ if (len(aml) < pkgstart + pkglen):
+ die("PckgLen 0x%x at offset 0x%x exceeds AML size 0x%x" %
+ (pkglen, offset, len(aml)))
+ return pkglen
+
+# Given method offset, find its NameString offset
+def aml_method_string(offset):
+ #0x14 MethodOp PkgLength NameString MethodFlags TermList
+ if (aml[offset] != 0x14):
+ die( "Method offset 0x%x: expected 0x14 actual 0x%x" %
+ (offset, aml[offset]));
+ offset += 1;
+ pkglenbytes = aml_pkglen_bytes(offset)
+ offset += pkglenbytes;
+ return offset;
+
+# Given name offset, find its NameString offset
+def aml_name_string(offset):
+ #0x08 NameOp NameString DataRef
+ if (aml[offset] != 0x08):
+ die( "Name offset 0x%x: expected 0x08 actual 0x%x" %
+ (offset, aml[offset]));
+ return offset + 1;
+
+# Given data offset, find dword const offset
+def aml_data_dword_const(offset):
+ #0x08 NameOp NameString DataRef
+ if (aml[offset] != 0x0C):
+ die( "Name offset 0x%x: expected 0x0C actual 0x%x" %
+ (offset, aml[offset]));
+ return offset + 1;
+
+# Given data offset, find word const offset
+def aml_data_word_const(offset):
+ #0x08 NameOp NameString DataRef
+ if (aml[offset] != 0x0B):
+ die( "Name offset 0x%x: expected 0x0B actual 0x%x" %
+ (offset, aml[offset]));
+ return offset + 1;
+
+# Given data offset, find byte const offset
+def aml_data_byte_const(offset):
+ #0x08 NameOp NameString DataRef
+ if (aml[offset] != 0x0A):
+ die( "Name offset 0x%x: expected 0x0A actual 0x%x" %
+ (offset, aml[offset]));
+ return offset + 1;
+
+# Given name offset, find dword const offset
+def aml_name_dword_const(offset):
+ return aml_data_dword_const(aml_name_string(offset) + 4)
+
+# Given name offset, find word const offset
+def aml_name_word_const(offset):
+ return aml_data_word_const(aml_name_string(offset) + 4)
+
+# Given name offset, find byte const offset
+def aml_name_byte_const(offset):
+ return aml_data_byte_const(aml_name_string(offset) + 4)
+
+def aml_processor_start(offset):
+ #0x5B 0x83 ProcessorOp PkgLength NameString ProcID
+ if ((aml[offset] != 0x5B) or (aml[offset + 1] != 0x83)):
+ die( "Name offset 0x%x: expected 0x5B 0x83 actual 0x%x 0x%x" %
+ (offset, aml[offset], aml[offset + 1]));
+ return offset
+
+def aml_processor_string(offset):
+ #0x5B 0x83 ProcessorOp PkgLength NameString ProcID
+ start = aml_processor_start(offset)
+ offset += 2
+ pkglenbytes = aml_pkglen_bytes(offset)
+ offset += pkglenbytes
+ return offset
+
+def aml_processor_end(offset):
+ start = aml_processor_start(offset)
+ offset += 2
+ pkglenbytes = aml_pkglen_bytes(offset)
+ pkglen = aml_pkglen(offset)
+ return offset + pkglen
+
+lineno = 0
+for line in fileinput.input():
+ # Strip trailing newline
+ line = line.rstrip();
+ # line number and debug string to output in case of errors
+ lineno = lineno + 1
+ debug = "input line %d: %s" % (lineno, line)
+ #ASL listing: space, then line#, then ...., then code
+ pasl = re.compile('^\s+([0-9]+)\.\.\.\.\s*')
+ m = pasl.search(line)
+ if (m):
+ add_asl(lineno, pasl.sub("", line));
+ # AML listing: offset in hex, then ...., then code
+ paml = re.compile('^([0-9A-Fa-f]+)\.\.\.\.\s*')
+ m = paml.search(line)
+ if (m):
+ add_aml(m.group(1), paml.sub("", line))
+
+# Now go over code
+# Track AML offset of a previous non-empty ASL command
+prev_aml_offset = -1
+for i in range(len(asl)):
+ debug = "input line %d: %s" % (asl[i].lineno, asl[i].line)
+
+ l = asl[i].line
+
+ # skip if not an extract directive
+ a = len(re.findall(r'ACPI_EXTRACT', l))
+ if (not a):
+ # If not empty, store AML offset. Will be used for sanity checks
+ # IASL seems to put {}. at random places in the listing.
+ # Ignore any non-words for the purpose of this test.
+ m = re.search(r'\w+', l)
+ if (m):
+ prev_aml_offset = asl[i].aml_offset
+ continue
+
+ if (a > 1):
+ die("Expected at most one ACPI_EXTRACT per line, actual %d" % a)
+
+ mext = re.search(r'''
+ ^\s* # leading whitespace
+ /\*\s* # start C comment
+ (ACPI_EXTRACT_\w+) # directive: group(1)
+ \s+ # whitspace separates directive from array name
+ (\w+) # array name: group(2)
+ \s*\*/ # end of C comment
+ \s*$ # trailing whitespace
+ ''', l, re.VERBOSE)
+ if (not mext):
+ die("Stray ACPI_EXTRACT in input")
+
+ # previous command must have produced some AML,
+ # otherwise we are in a middle of a block
+ if (prev_aml_offset == asl[i].aml_offset):
+ die("ACPI_EXTRACT directive in the middle of a block")
+
+ directive = mext.group(1)
+ array = mext.group(2)
+ offset = asl[i].aml_offset
+
+ if (directive == "ACPI_EXTRACT_NAME_DWORD_CONST"):
+ offset = aml_name_dword_const(offset)
+ elif (directive == "ACPI_EXTRACT_NAME_WORD_CONST"):
+ offset = aml_name_word_const(offset)
+ elif (directive == "ACPI_EXTRACT_NAME_BYTE_CONST"):
+ offset = aml_name_byte_const(offset)
+ elif (directive == "ACPI_EXTRACT_NAME_STRING"):
+ offset = aml_name_string(offset)
+ elif (directive == "ACPI_EXTRACT_METHOD_STRING"):
+ offset = aml_method_string(offset)
+ elif (directive == "ACPI_EXTRACT_PROCESSOR_START"):
+ offset = aml_processor_start(offset)
+ elif (directive == "ACPI_EXTRACT_PROCESSOR_STRING"):
+ offset = aml_processor_string(offset)
+ elif (directive == "ACPI_EXTRACT_PROCESSOR_END"):
+ offset = aml_processor_end(offset)
+ else:
+ die("Unsupported directive %s" % directive)
+
+ if array not in output:
+ output[array] = []
+ output[array].append("0x%x" % offset)
+
+debug = "at end of file"
+
+#Use type large enough to fit the table
+if (len(aml) >= 0x10000):
+ offsettype = "int"
+elif (len(aml) >= 0x100):
+ offsettype = "short"
+else:
+ offsettype = "char"
+
+# Pretty print output
+for array in output.keys():
+
+ sys.stdout.write("static unsigned %s %s[] = {\n" % (offsettype, array))
+ sys.stdout.write(",\n".join(output[array]))
+ sys.stdout.write('\n};\n');
projects / seabios.git / blobdiff