Reorganized directory structure

Moved cross-compiler to /xcc/ rather than /
Added ISA sim in /sim/
Added Proxy Kernel in /pk/ (to be cleaned up)
Added opcode map to /opcodes/ (ditto)
Added documentation to /doc/

1 files changed, 115 insertions, 0 deletions

diff --git a/parse-opcodes b/parse-opcodes
new file mode 100755
index 0000000..6c735d3
--- /dev/null
+++ b/parse-opcodes
@@ -0,0 +1,115 @@
+#!/usr/bin/python
+
+import math
+import sys
+import tokenize
+
+opcode_base = 26
+opcode_size = 6
+funct_base = 0
+funct_size = 6
+
+nopcode = 1 << opcode_size
+nfunct = 1 << funct_size
+opcodes = nopcode*[None]
+
+def binary(n, digits=0):
+	rep = bin(n)[2:]
+	return rep if digits == 0 else ('0' * (digits - len(rep))) + rep
+
+def make_latex_table(opcodes, captions, labels, upper_opcode=None):
+	if upper_opcode is None: print '% Automatically generated by parse-opcodes'
+	print '\\begin{table}[h]'
+	print '\\begin{center}'
+	print '\\begin{tabular}{r|c|c|c|c|c|c|c|c|}'
+	cols = 8
+	print '\\multicolumn{1}{r}{}&',
+	for i in range(cols):
+		print '\\multicolumn{1}{c}{%s}' % binary(i,int(math.log(cols,2))),('&' if i < cols-1 else '\\\\\n'),
+	print '\\cline{2-%d}' % (cols+1)
+	for opcode, insn in enumerate(opcodes):
+		if not opcode % cols: print binary(opcode/cols,int(math.log(nopcode/cols,2))),'&',
+		if isinstance(insn, list):
+			print 'Table \\ref{table:%s}' % labels[1] % {'opcode':opcode},
+		else:
+			print ' ' if insn is None else insn,
+		print '&' if (opcode+1) % cols else '\\\\\\cline{2-%d}\n' % (cols+1),
+	print '\\end{tabular}'
+	print '\\end{center}'
+	print '\\caption{%s}' % captions[0] % {'opcode':upper_opcode}
+	print '\\label{table:%s}' % labels[0] % {'opcode':upper_opcode}
+	print '\\end{table}'
+	
+	for opcode, insn in enumerate(opcodes):
+		if isinstance(insn, list):
+			make_latex_table(insn, captions[1:], labels[1:], opcode)
+
+def make_disasm_table(opcodes, upper_opcode=None):
+	if upper_opcode is None: print '/* Automatically generated by parse-opcodes */'
+	for opcode, insn in enumerate(opcodes):
+		if isinstance(insn, list):
+			make_disasm_table(insn, opcode)
+		elif isinstance(insn, basestring):
+			mask = ((1 << opcode_size)-1) << opcode_base
+			if upper_opcode is None:
+				match = opcode << opcode_base
+			else:
+				mask |= ((1 << funct_size)-1) << funct_base
+				match = (upper_opcode << opcode_base) | (opcode << funct_base)
+			insn = insn.upper().replace('.','_')
+			print '#define MATCH_%s %s' % (insn, hex(match))
+			print '#define  MASK_%s %s' % (insn, hex(mask))
+
+def make_switch(opcodes, upper_opcode=None):
+	if upper_opcode is None: print '/* Automatically generated by parse-opcodes */'
+	pad = '' if upper_opcode is None else '      '
+	print '%sswitch(%s)' % (pad,'opcode' if upper_opcode is None else 'funct')
+	print '%s{' % pad
+	for opcode, insn in enumerate(opcodes):
+		if insn is None: continue
+		print '%s  case %d:' % (pad,opcode)
+		print '%s    {' % pad
+		if isinstance(insn, list):
+			make_switch(insn, opcode)
+		else:
+			insn = insn.lower().replace('.','_')
+			print '%s      #include "insns/%s.h"' % (pad,insn)
+		print '%s    }' % pad
+		print '%s    break;' % pad
+	print '%s  default:' % pad
+	print '%s    {' % pad
+	print '%s      #include "insns/unimp.h"' % pad
+	print '%s    }' % pad
+	print '%s    break;' % pad
+	print '%s  }' % pad
+
+for line in sys.stdin:
+	line = line.partition('#')
+	tokens = line[0].split()
+	
+	if len(tokens) == 0:
+		continue
+	assert len(tokens) in [2,3]
+
+	opcode = int(tokens[1],0)
+	name = tokens[0].strip()
+	assert opcode < nopcode
+	assert not isinstance(opcodes[opcode], basestring)
+
+	if len(tokens) == 3:
+		funct = int(tokens[2],0)
+		if opcodes[opcode] is None:
+			opcodes[opcode] = nfunct*[None]
+		assert not isinstance(opcodes[opcode][funct], basestring)
+		opcodes[opcode][funct] = name
+	else:
+		opcodes[opcode] = name
+
+if sys.argv[1] == '-tex':
+	make_latex_table(opcodes, ['Instructions encoded by opcode field','Instructions encoded by funct field when opcode = %(opcode)d'], ['opcodes','opcode%(opcode)d'])
+elif sys.argv[1] == '-disasm':
+	make_disasm_table(opcodes)
+elif sys.argv[1] == '-switch':
+	make_switch(opcodes)
+else:
+	assert 0