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| author | Benedikt Böhm <bb@xnull.de> | 2009-07-06 21:21:19 +0200 |
|---|---|---|
| committer | Benedikt Böhm <bb@xnull.de> | 2009-07-06 21:21:19 +0200 |
| commit | ac4fb25412982447af2e718d3824e6acf7d3a2dd (patch) | |
| tree | 4eb8d49be8363dda95e3e1851e8dc04e6c3cb4f5 /src/back | |
| parent | 37aec7789434c3ade9a1df630b1eec6c997487b2 (diff) | |
| download | swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.tar.gz swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.tar.xz swppy-ac4fb25412982447af2e718d3824e6acf7d3a2dd.zip | |
implement print statement
Diffstat (limited to 'src/back')
| -rw-r--r-- | src/back/generator.py | 8 | ||||
| -rw-r--r-- | src/back/tac.py | 2 |
2 files changed, 10 insertions, 0 deletions
diff --git a/src/back/generator.py b/src/back/generator.py index 414cf7b..7ca2658 100644 --- a/src/back/generator.py +++ b/src/back/generator.py @@ -90,6 +90,14 @@ class Generator(object): elif tac.op == Op.RETURN: self.emit("ADD rv, r0, r%d" % tac.arg1) self.emit(tac) + elif tac.op == Op.PRINT: + r = Register().new() + self.emit("PUSH r%d" % tac.arg1) + self.emit("MOV r%d, %d" % (r, 1)) + self.emit("PUSH r%d" % r) + self.emit("SYS") + self.emit("POP r0") + self.emit("POP r0") elif isinstance(tac, FunctionPrologue): self.generate_prologue(tac.name) elif isinstance(tac, FunctionEpilogue): diff --git a/src/back/tac.py b/src/back/tac.py index 03303cf..86ccd90 100644 --- a/src/back/tac.py +++ b/src/back/tac.py @@ -40,6 +40,8 @@ Op.JMP = Op("JMP") # goto x Op.CALL = Op("CALL") # call x return in y Op.RETURN = Op("RETURN") # return x +Op.PRINT = Op("PRINT") # print x + class TAC(object): def __init__(self,op,arg1=None,arg2=None): self.op = op |