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Tweak the syntax for the .array-data structure

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Now each number is an individual element, instead of the weird
"re-interpret numbers as bytes, concatenate, and then re-interpret
as numbers based on element width" thing that was going on before

Also, only element widths 1, 2, 4 and 8 are allowed
This commit is contained in:
Ben Gruver 2013-04-16 22:47:21 -07:00
parent d9c50f3f36
commit 450cdd6c7a
2 changed files with 28 additions and 35 deletions
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18
smali/src/main/antlr3/smaliParser.g
View File

@ -658,6 +658,9 @@ literal
| type_field_method_literal
| enum_literal;
parsed_integer_literal returns[int value]
: integer_literal { $value = LiteralTools.parseInt($integer_literal.text); };
integral_literal
: LONG_LITERAL
| integer_literal
@ -1116,12 +1119,19 @@ insn_format51l returns [int size]
-> ^(I_STATEMENT_FORMAT51l[$start, "I_STATEMENT_FORMAT51l"] INSTRUCTION_FORMAT51l REGISTER fixed_literal);
insn_array_data_directive returns [int size]
: ARRAY_DATA_DIRECTIVE
: ARRAY_DATA_DIRECTIVE
parsed_integer_literal
{
int elementWidth = $parsed_integer_literal.value;
if (elementWidth != 4 && elementWidth != 8 && elementWidth != 1 && elementWidth != 2) {
throw new SemanticException(input, $start, "Invalid element width: \%d. Must be 1, 2, 4 or 8", elementWidth);
}
}
integral_literal (fixed_literal {$size+=$fixed_literal.size;})* END_ARRAY_DATA_DIRECTIVE
{$size = (($size + 1)/2)*2 + 8;}
(fixed_literal {$size+=elementWidth;})* END_ARRAY_DATA_DIRECTIVE
{$size = (($size + 1) & ~1) + 8;}
-> ^(I_STATEMENT_ARRAY_DATA[$start, "I_STATEMENT_ARRAY_DATA"] ^(I_ARRAY_ELEMENT_SIZE integral_literal)
-> ^(I_STATEMENT_ARRAY_DATA[$start, "I_STATEMENT_ARRAY_DATA"] ^(I_ARRAY_ELEMENT_SIZE parsed_integer_literal)
^(I_ARRAY_ELEMENTS fixed_literal*));
insn_packed_switch_directive returns [int size]

45
smali/src/main/antlr3/smaliTreeWalker.g
View File

@ -269,19 +269,17 @@ literal returns[EncodedValue encodedValue]
| method_literal { $encodedValue = new ImmutableMethodEncodedValue($method_literal.value); }
| enum_literal { $encodedValue = new ImmutableEnumEncodedValue($enum_literal.value); };
//everything but string
fixed_size_literal returns[byte[\] value]
: integer_literal { $value = LiteralTools.intToBytes($integer_literal.value); }
| long_literal { $value = LiteralTools.longToBytes($long_literal.value); }
| short_literal { $value = LiteralTools.shortToBytes($short_literal.value); }
| byte_literal { $value = new byte[] { $byte_literal.value }; }
| float_literal { $value = LiteralTools.floatToBytes($float_literal.value); }
| double_literal { $value = LiteralTools.doubleToBytes($double_literal.value); }
| char_literal { $value = LiteralTools.charToBytes($char_literal.value); }
| bool_literal { $value = LiteralTools.boolToBytes($bool_literal.value); };
fixed_64bit_literal_number returns[Number value]
: integer_literal { $value = $integer_literal.value; }
| long_literal { $value = $long_literal.value; }
| short_literal { $value = $short_literal.value; }
| byte_literal { $value = $byte_literal.value; }
| float_literal { $value = Float.floatToRawIntBits($float_literal.value); }
| double_literal { $value = Double.doubleToRawLongBits($double_literal.value); }
| char_literal { $value = (int)$char_literal.value; }
| bool_literal { $value = $bool_literal.value?1:0; };
//everything but string
fixed_64bit_literal returns[long value]
: integer_literal { $value = $integer_literal.value; }
| long_literal { $value = $long_literal.value; }
@ -303,12 +301,12 @@ fixed_32bit_literal returns[int value]
| char_literal { $value = $char_literal.value; }
| bool_literal { $value = $bool_literal.value?1:0; };
array_elements returns[List<byte[\]> elements]
array_elements returns[List<Number> elements]
: {$elements = Lists.newArrayList();}
^(I_ARRAY_ELEMENTS
(fixed_size_literal
(fixed_64bit_literal_number
{
$elements.add($fixed_size_literal.value);
$elements.add($fixed_64bit_literal_number.value);
})*);
packed_switch_elements[int baseAddress, int firstKey] returns[List<SwitchElement> elements]
@ -1248,25 +1246,10 @@ insn_array_data_directive[List<Instruction> instructions] returns[int outRegiste
: //e.g. .array-data 4 1000000 .end array-data
^(I_STATEMENT_ARRAY_DATA ^(I_ARRAY_ELEMENT_SIZE short_integral_literal) array_elements)
{
// TODO: reimplement, after changing how it's parsed
/*
int elementWidth = $short_integral_literal.value;
List<byte[]> byteValues = $array_elements.elements;
List<Number> elements = $array_elements.elements;
int length = 0;
for (byte[] byteValue: byteValues) {
length+=byteValue.length;
}
byte[] encodedValues = new byte[length];
int index = 0;
for (byte[] byteValue: byteValues) {
System.arraycopy(byteValue, 0, encodedValues, index, byteValue.length);
index+=byteValue.length;
}
$instructions.add(new ImmutableArrayPayload(elementWidth, null));
*/
$instructions.add(new ImmutableArrayPayload(elementWidth, $array_elements.elements));
};
insn_packed_switch_directive[List<Instruction> instructions] returns[int outRegisters]