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# generate variadic calls to test the
# abi implementation
from random import seed, randint, uniform
from struct import unpack
I, D = 'd', 'g'
formats = [
# list of formats to test
[I],
[D],
[I,D],
[D,D],
[I,I,I,I],
[D,D,D,D],
[I,D,I,D],
[D,D,I,I],
[I,I,D,D],
[],
]
generate = [
# numbers of fixed integer and
# floating point arguments to
# test
(0, 0), (1, 0), (0, 1), (4, 0),
(0, 6), (5, 7), (10, 10), (9, 0),
]
def mkargs(nargs, type, name):
args = map(
lambda n: ''.join([type, name, str(n), ', ']),
range(nargs)
)
return ''.join(args)
def mkfstr(fmt):
fstr = map(
lambda x: {I: '%d ', D: '%g '}[x],
fmt
)
return '"' + ''.join(fstr) + '\\n"'
def randargs(fmt):
ra = {
I: lambda: '{}'.format(randint(-10, 10)),
D: lambda: '{0:.4g}'.format(uniform(-10, 10))
}
return list(map(lambda x: ra[x](), fmt))
def genssa(qbeprint, qbecall):
funcs = [('qbeprint', qbeprint), ('qbecall', qbecall)]
for fnum, (nia, nfa) in enumerate(generate):
params = "{}{}l %fmt, ...".format(
mkargs(nia, 'w ', '%argw'),
mkargs(nfa, 'd ', '%argd')
)
for name, code in funcs:
print('export function ${}{}({}) {}'
.format(name, fnum, params, code)
)
def gendriver():
print('# >>> driver')
print('# #include <stdarg.h>')
print('# #include <stdio.h>')
for fnum, (nia, nfa) in enumerate(generate):
params = "{}{}char *, ...".format(
mkargs(nia, 'int ', 'argw'),
mkargs(nfa, 'double ', 'argd')
)
for name in ['qbeprint', 'qbecall']:
print('# extern void {}{}({});'
.format(name, fnum, params)
)
output = ''
print('# int print(char *fmt, va_list *ap) {')
print('# return vprintf(fmt, *ap);');
print('# }')
print('# int main() {')
for fnum, (nia, nfa) in enumerate(generate):
info = '# ({} int, {} double)'.format(nia, nfa)
print('# puts("{}");'.format(info))
output += '# {}\n'.format(info)
for fmt in formats:
ra = randargs(fmt)
vaargs = ', '.join(ra)
expect = ' '.join(ra)
if fmt:
vaargs = ', ' + vaargs
expect = expect + ' '
args = ''.join(
['0, '] * (nia+nfa) +
[mkfstr(fmt), vaargs]
)
for name in ['qbeprint', 'qbecall']:
print('# {}{}({});'
.format(name, fnum, args)
)
output += '# {}\n'.format(expect)
print('# }')
print('# <<<')
print('\n# >>> output\n' + output + '# <<<')
qbeprint="""{{
@start
%fmtdbl =l alloc4 4
%fmtint =l alloc4 4
%emptys =l alloc4 4
storew {}, %fmtint
storew {}, %fmtdbl
storew 0, %emptys
%vp =l alloc8 32
%fmt1 =l add 1, %fmt
vastart %vp
@loop
%p =l phi @start %fmt1, @casef %p1, @cased %p1
%c =w loadsb %p
%p1 =l add 3, %p
jnz %c, @loop1, @end
@loop1
%isg =w ceqw %c, 103
jnz %isg, @casef, @cased
@casef
%dbl =d vaarg %vp
%r =w call $printf(l %fmtdbl, ..., d %dbl)
jmp @loop
@cased
%int =w vaarg %vp
%r =w call $printf(l %fmtint, ..., w %int)
jmp @loop
@end
%r =w call $puts(l %emptys)
ret
}}
""".format(
unpack("i", b'%d \x00')[0],
unpack("i", b'%g \x00')[0]
)
qbecall="""{
@start
%vp =l alloc8 32
vastart %vp
%r =w call $print(l %fmt, l %vp)
ret
}
"""
if __name__ == "__main__":
seed(42)
genssa(qbeprint, qbecall)
gendriver()
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