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crater
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Support step() with bit() and pseudo-cases.

master
Ben Kurtovic 9 年之前
父節點
c3ab17f18e
當前提交
9b611e1c9a
共有 3 個文件被更改，包括 70 次插入 和 168 次删除
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  1. +39
    -15
      scripts/update_asm_instructions.py
  2. +1
    -1
      src/assembler/instructions.inc.c
  3. +30
    -152
      src/assembler/instructions.yml

+ 39
- 15
scripts/update_asm_instructions.py 查看文件

@@ -12,7 +12,6 @@ when the latter is modified, but can also be run manually.

from __future__ import print_function

from itertools import product
import re
import time

@@ -46,6 +45,18 @@ def _atoi(value):
except ValueError:
return int(value, 16)

def _is_call(call, func):
"""
Return whether the first argument is a function call of the second.
"""
return call.startswith(func + "(") and call.endswith(")")

def _call_args(call, func):
"""
Given a call and a function name, return the function call arguments.
"""
return call[len(func) + 1:-1].strip()

class Instruction(object):
"""
Represent a single ASM instruction mnemonic.
@@ -222,6 +233,23 @@ class Instruction(object):
choices = [cond * num if len(cond) == 1 else cond for cond in splits]
return zip(*choices)

def _step(self, argdata):
"""
Evaluate a step function call into a single byte.
"""
args = _call_args(argdata, "step")
if " " in args:
base, stride = map(_atoi, args.split(" "))
else:
base, stride = _atoi(args), 1

if base not in self._step_state:
self._step_state[base] = 0

byte = base + self._step_state[base] * stride
self._step_state[base] += 1
return byte

def _adapt_return(self, types, conds, ret):
"""
Return a modified byte list to accomodate for prefixes and immediates.
@@ -258,21 +286,16 @@ class Instruction(object):
index = types.index("immediate")
ret[i] = "INST_IMM({0}).sval - 2".format(index)

elif byte.startswith("bit(") and byte.endswith(")"):
elif _is_call(byte, "bit"):
index = types.index("immediate")
base = byte[4:-1]
ret[i] = "{0} + 8 * INST_IMM({1}).uval".format(base, index)

elif byte.startswith("step(") and byte.endswith(")"):
arg = byte[5:-1]
if " " in arg:
base, stride = map(_atoi, arg.split(" "))
else:
base, stride = _atoi(arg), 1
if base not in self._step_state:
self._step_state[base] = 0
ret[i] = base + self._step_state[base] * stride
self._step_state[base] += 1
base = _call_args(byte, "bit")
if _is_call(base, "step"):
base = self._step(base)
ret[i] = "0x{0:02X} + 8 * INST_IMM({1}).uval".format(
_atoi(base), index)

elif _is_call(byte, "step"):
ret[i] = self._step(byte)

else:
msg = "Unsupported return byte: {0}"
@@ -338,6 +361,7 @@ class Instruction(object):
cond = self._build_case_type_check(ctype)
lines.append(TAB + "if ({0}) {{".format(cond))

self._step_state = {}
subcases = [(perm, sub["return"]) for sub in case["cases"]
for perm in self._iter_permutations(ctype, sub["cond"])]
for cond, ret in subcases:


+ 1
- 1
src/assembler/instructions.inc.c 查看文件

@@ -7,7 +7,7 @@
`make` should trigger a rebuild when it is modified; if not, use:
`python scripts/update_asm_instructions.py`.

@AUTOGEN_DATE Thu May 21 21:05:17 2015 UTC
@AUTOGEN_DATE Thu May 21 22:35:58 2015 UTC
*/

/* @AUTOGEN_INST_BLOCK_START */


+ 30
- 152
src/assembler/instructions.yml 查看文件

@@ -93,18 +93,8 @@ bit:
cases:
- cond: [bit, a]
return: [0xCB, bit(0x47)]
- cond: [bit, b]
return: [0xCB, bit(0x40)]
- cond: [bit, c]
return: [0xCB, bit(0x41)]
- cond: [bit, d]
return: [0xCB, bit(0x42)]
- cond: [bit, e]
return: [0xCB, bit(0x43)]
- cond: [bit, h]
return: [0xCB, bit(0x44)]
- cond: [bit, l]
return: [0xCB, bit(0x45)]
- cond: [bit, b|c|d|e|h|l]
return: [0xCB, bit(step(0x40))]
- type: [immediate, indirect_hl_or_indexed]
cases:
- cond: [bit, _]
@@ -119,22 +109,8 @@ call:
return: [0xCD, u16]
- type: [condition, immediate]
cases:
- cond: [nz, u16]
return: [0xC4, u16]
- cond: [z, u16]
return: [0xCC, u16]
- cond: [nc, u16]
return: [0xD4, u16]
- cond: [c, u16]
return: [0xDC, u16]
- cond: [po, u16]
return: [0xE4, u16]
- cond: [pe, u16]
return: [0xEC, u16]
- cond: [p, u16]
return: [0xF4, u16]
- cond: [m, u16]
return: [0xFC, u16]
- cond: [nz|z|nc|c|po|pe|p|m, u16]
return: [step(0xC4 0x08), u16]

ccf:
args: no
@@ -147,14 +123,8 @@ cp:
cases:
- cond: [a]
return: [0xBF]
- cond: [b]
return: [0xB8]
- cond: [c]
return: [0xB9]
- cond: [d]
return: [0xBA]
- cond: [e]
return: [0xBB]
- cond: [b|c|d|e]
return: [step(0xB8)]
- cond: [h|ih]
return: [0xBC]
- cond: [l|il]
@@ -199,14 +169,8 @@ dec:
cases:
- cond: [a]
return: [0x3D]
- cond: [b]
return: [0x05]
- cond: [c]
return: [0x0D]
- cond: [d]
return: [0x15]
- cond: [e]
return: [0x1D]
- cond: [b|c|d|e]
return: [step(0x05 0x08)]
- cond: [h|ih]
return: [0x25]
- cond: [l|il]
@@ -283,18 +247,8 @@ in:
return: [0xDB, u8]
- cond: [a, reg.c]
return: [0xED, 0x78]
- cond: [b, reg.c]
return: [0xED, 0x40]
- cond: [c, reg.c]
return: [0xED, 0x48]
- cond: [d, reg.c]
return: [0xED, 0x50]
- cond: [e, reg.c]
return: [0xED, 0x58]
- cond: [h, reg.c]
return: [0xED, 0x60]
- cond: [l, reg.c]
return: [0xED, 0x68]
- cond: [b|c|d|e|h|l, reg.c]
return: [0xED, step(0x40 0x08)]
- type: [port]
cases:
- cond: [reg.c]
@@ -307,14 +261,8 @@ inc:
cases:
- cond: [a]
return: [0x3C]
- cond: [b]
return: [0x04]
- cond: [c]
return: [0x0C]
- cond: [d]
return: [0x14]
- cond: [e]
return: [0x1C]
- cond: [b|c|d|e]
return: [step(0x04 0x08)]
- cond: [h|ih]
return: [0x24]
- cond: [l|il]
@@ -357,22 +305,8 @@ jp:
return: [0xC3, u16]
- type: [condition, immediate]
cases:
- cond: [nz, u16]
return: [0xC2, u16]
- cond: [z, u16]
return: [0xCA, u16]
- cond: [nc, u16]
return: [0xD2, u16]
- cond: [c, u16]
return: [0xDA, u16]
- cond: [po, u16]
return: [0xE2, u16]
- cond: [pe, u16]
return: [0xEA, u16]
- cond: [p, u16]
return: [0xF2, u16]
- cond: [m, u16]
return: [0xFA, u16]
- cond: [nz|z|nc|c|po|pe|p|m, u16]
return: [step(0xC2 0x08), u16]
- type: [indirect_hl_or_indexed]
cases:
- cond: [_]
@@ -397,70 +331,40 @@ ld:
cases:
- cond: [a, a]
return: [0x7F]
- cond: [a, b]
return: [0x78]
- cond: [a, c]
return: [0x79]
- cond: [a, d]
return: [0x7A]
- cond: [a, e]
return: [0x7B]
- cond: [a, b|c|d|e]
return: [step(0x78)]
- cond: [a, h|ih]
return: [0x7C]
- cond: [a, l|il]
return: [0x7D]
- cond: [b, a]
return: [0x47]
- cond: [b, b]
return: [0x40]
- cond: [b, c]
return: [0x41]
- cond: [b, d]
return: [0x42]
- cond: [b, e]
return: [0x43]
- cond: [b, b|c|d|e]
return: [step(0x40)]
- cond: [b, h|ih]
return: [0x44]
- cond: [b, l|il]
return: [0x45]
- cond: [c, a]
return: [0x4F]
- cond: [c, b]
return: [0x48]
- cond: [c, c]
return: [0x49]
- cond: [c, d]
return: [0x4A]
- cond: [c, e]
return: [0x4B]
- cond: [c, b|c|d|e]
return: [step(0x48)]
- cond: [c, h|ih]
return: [0x4C]
- cond: [c, l|il]
return: [0x4D]
- cond: [d, a]
return: [0x57]
- cond: [d, b]
return: [0x50]
- cond: [d, c]
return: [0x51]
- cond: [d, d]
return: [0x52]
- cond: [d, e]
return: [0x53]
- cond: [d, b|c|d|e]
return: [step(0x50)]
- cond: [d, h|ih]
return: [0x54]
- cond: [d, l|il]
return: [0x55]
- cond: [e, a]
return: [0x5F]
- cond: [e, b]
return: [0x58]
- cond: [e, c]
return: [0x59]
- cond: [e, d]
return: [0x5A]
- cond: [e, e]
return: [0x5B]
- cond: [e, b|c|d|e]
return: [step(0x58)]
- cond: [e, h|ih]
return: [0x5C]
- cond: [e, l|il]
@@ -507,14 +411,8 @@ ld:
cases:
- cond: [a, u8]
return: [0x3E, u8]
- cond: [b, u8]
return: [0x06, u8]
- cond: [c, u8]
return: [0x0E, u8]
- cond: [d, u8]
return: [0x16, u8]
- cond: [e, u8]
return: [0x1E, u8]
- cond: [b|c|d|e, u8]
return: [step(0x06 0x08), u8]
- cond: [h|ih, u8]
return: [0x26, u8]
- cond: [l|il, u8]
@@ -531,18 +429,8 @@ ld:
cases:
- cond: [a, _]
return: [0x7E]
- cond: [b, _]
return: [0x46]
- cond: [c, _]
return: [0x4E]
- cond: [d, _]
return: [0x56]
- cond: [e, _]
return: [0x5E]
- cond: [h, _]
return: [0x66]
- cond: [l, _]
return: [0x6E]
- cond: [b|c|d|e|h|l, _]
return: [step(0x46 0x08)]
- type: [register, indirect]
cases:
- cond: [a, reg.bc]
@@ -563,18 +451,8 @@ ld:
cases:
- cond: [_, a]
return: [0x77]
- cond: [_, b]
return: [0x70]
- cond: [_, c]
return: [0x71]
- cond: [_, d]
return: [0x72]
- cond: [_, e]
return: [0x73]
- cond: [_, h]
return: [0x74]
- cond: [_, l]
return: [0x75]
- cond: [_, b|c|d|e|h|l]
return: [step(0x70)]
- type: [indirect_hl_or_indexed, immediate]
cases:
- cond: [_, u8]


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