This project was created with the aim of providing a "golden model" of the RISC-V calling convention. It will soon be expanded to support test case generation, to form part of a RISC-V ABI compliance suite.
Usage example:
$ python3
Python 3.6.2 (default, Jul 20 2017, 03:52:27)
[GCC 7.1.1 20170630] on linux
Type "help", "copyright", "credits" or "license" for more information.
>>> from rvcc import *
>>> m = RVMachine(xlen=32, flen=64)
>>> m.call([
... Int32,
... Double,
... Struct(Int8, Array(Float, 1)),
... Struct(Array(Int8, 20)),
... Int64,
... Int64,
... Int64])
Args:
arg00: SInt32
arg01: FP64
arg02: Struct([SInt8, Pad24, Array(FP32*1, s32, a32)], s64, a32)
arg03: Struct([Array(SInt8*20, s160, a8)], s160, a8)
arg04: SInt64
arg05: SInt64
arg06: SInt64
GPRs:
GPR[a0]: arg00
GPR[a1]: arg02[0:7]
GPR[a2]: &arg03
GPR[a3]: arg04[0:31]
GPR[a4]: arg04[32:63]
GPR[a5]: arg05[0:31]
GPR[a6]: arg05[32:63]
GPR[a7]: arg06[0:31]
FPRs:
FPR[fa0]: arg01
FPR[fa1]: arg02[32:63]
FPR[fa2]: ?
FPR[fa3]: ?
FPR[fa4]: ?
FPR[fa5]: ?
FPR[fa6]: ?
FPR[fa7]: ?
Stack:
arg06[32:63] (oldsp+0)
Copyright (c) 2017 lowRISC CIC
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