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move long m/x settings to the block

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This commit is contained in:
Kelvin Sherlock 2019-08-11 00:12:10 -04:00
parent d78d9d51dc
commit d46fae7cf0
2 changed files with 52 additions and 6 deletions
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43
asm.py
View File

@ -9,6 +9,7 @@ class Block(object):
self.labels = []
self.instr = []
self.rts = False
self.mx = 0b11
def empty(self):
return len(self.instr) == 0 and self.bne == None
@ -39,7 +40,12 @@ class Assembler(object):
self.new_block()
def new_block(self):
mx = 0b11
if self.b:
mx = self.b.mx
self.b = Block()
self.b.mx = mx
self.blocks.append(self.b)
def bne(self, l):
@ -50,6 +56,26 @@ class Assembler(object):
self.b.size = self.b.size + size
self.b.instr.append("\t" + op)
def mx_common(self, onoff, mask):
mx = oldmx = self.b.mx
if onoff: mx |= mask
else: mx &= ~mask
if mx == oldmx: return
if not self.b.empty():
self.new_block()
self.b.mx = mx
def longm(self, onoff):
self.mx_common(onoff, 0b10)
def longx(self, onoff):
self.mx_common(onoff, 0b01)
def merge_rts(self):
blocks = []
prev = None
@ -132,14 +158,31 @@ class Assembler(object):
def finish(self,io):
onoff = ("on", "off")
self.b = None
self.merge_rts()
self.merge_labels()
self.reify_branches()
self.header(io)
mx = 0b11
io.write("\tlongi on\n")
io.write("\tlonga on\n")
for b in self.blocks:
for l in b.labels: io.write(l + "\tanop\n")
# io.write(f"mx: {b.mx}\n")
mxdiff = mx ^ b.mx
if mxdiff:
if mxdiff & 0b01:
io.write("\tlongi " + onoff[mx & 0b01] + "\n")
if mxdiff & 0b10:
io.write("\tlonga " + onoff[(mx & 0b10) >> 1] + "\n")
mx = b.mx
for i in b.instr: io.write(i + "\n")
self.footer(io)

15
string_compiler.py
View File

@ -33,10 +33,9 @@ def mask_char(asm, short_m, old, new):
if old & ~new:
asm.emit("tya", 1)
asm.longm(not short_m)
if short_m:
asm.emit("longa off", 0)
asm.emit("ora #${:02x}".format(new), 2)
asm.emit("longa on", 0)
else:
asm.emit("ora #${:04x}".format(new), 3)
return new
@ -71,7 +70,10 @@ def generate_asm(asm, d, level):
if count>0:
if short_m:
asm.longm(False)
asm.emit("sep #$20", 2)
else:
asm.longm(True)
if level==0:
asm.emit("lda (cp)", 2)
@ -88,12 +90,14 @@ def generate_asm(asm, d, level):
l = asm.reserve_label()
if flag_i: mask = mask_char(asm, short_m, mask, or_mask(k))
v = str_to_int(k)
asm.longm(True)
asm.emit("cmp #${:04x}\t; '{}'".format(v, encode_string(k)), 3)
asm.bne(l)
generate_asm(asm, dd, level+1)
asm.emit_label(l)
if single and double:
asm.longm(False)
asm.emit("sep #$20", 2)
short_m = True
mask = mask & 0xff
@ -103,16 +107,15 @@ def generate_asm(asm, d, level):
l = asm.reserve_label()
if flag_i: mask = mask_char(asm, short_m, mask, or_mask(k))
v = str_to_int(k)
asm.emit("longa off", 0)
asm.longm(False)
asm.emit("cmp #${:02x}\t; '{}'".format(v, encode_string(k)), 2)
asm.emit("longa on", 0)
asm.bne(l)
generate_asm(asm, dd, level+1)
asm.emit_label(l)
# if short_m:
# asm.emit("longa on", 0)
# if short_m: asm.longm(True)
if "" in d:
d = d[""]
asm.emit("ldx #{}\t; '{}'".format(d["__value__"], d["__key__"]), 3)