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Instruction pairing extended to more than two instructions.

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This commit is contained in:
Adrian Matoga 2021-03-14 23:32:32 +01:00 committed by Piotr Fusik
parent f33c112ac6
commit 9aae1ad4c4
2 changed files with 24 additions and 8 deletions

25
source/app.d

@ -2664,19 +2664,24 @@ unittest {
void assemblyPair() {
assert(!inOpcode);
string instruction = readInstruction();
if (!eol() && line[column] == ':') {
string[] extraInstructions;
while (!eol() && line[column] == ':') {
pairing = true;
column++;
string instruction2 = readInstruction();
extraInstructions ~= readInstruction();
}
if (!extraInstructions.empty) {
int savedColumn = column;
if (willSkip)
warning("Skipping only the first instruction");
assemblyInstruction(instruction);
checkNoExtraCharacters();
column = savedColumn;
wereManyInstructions = false;
assemblyInstruction(instruction2);
wereManyInstructions = true;
foreach (instruction2; extraInstructions) {
column = savedColumn;
assemblyInstruction(instruction2);
wereManyInstructions = true;
}
} else {
pairing = false;
assemblyInstruction(instruction);
@ -2847,6 +2852,16 @@ void assemblyFile(string filename) {
lineNo = oldLineNo;
}
unittest {
sourceFiles[""] = " lda:sne:ldy:inx $1234".representation;
assemblyFile("");
pass2 = true;
objectBuffer.length = 0;
assemblyFile("");
writefln!"%(%02x%)"(objectBuffer);
assert(objectBuffer == [0xad, 0x34, 0x12, 0xd0, 0x03, 0xac, 0x34, 0x12, 0xe8]);
}
void assemblyPass() {
origin = -1;
loadOrigin = -1;

7
xasm.1.asciidoc

@ -160,7 +160,7 @@ to start a comment.
-------------------------------------------------------------
[[new_pairing]]
You may put two instructions in one line so they share their operand.
You may put two or more instructions in one line so they share their operand.
For example:
------------
eor:sta foo
@ -173,9 +173,9 @@ is equivalent to
Note that
------------
lda:tax #0
lda:tax:tay #0
------------
is allowed because `#0` is treated as a comment for `tax`.
is allowed because `#0` is treated as a comment for `tax` and `tay`.
EXPRESSIONS
-----------
@ -716,6 +716,7 @@ Version 3.x.x (20xx-xx-xx)
~~~~~~~~~~~~~~~~~~~~~~~~~~
- source can optionally be read from standard input, and object can be
written to standard output instead of files (by Adrian Matoga)
- <<new_pairing,any number of instructions in one line>> (by Adrian Matoga)
Version 3.2.0 (2021-06-22)
~~~~~~~~~~~~~~~~~~~~~~~~~~