-rwxr-xr-x 8539 libmceliece-20240513/scripts-build/dispatch raw
#!/usr/bin/env python3
import os
import sys
import re
def cstring(x):
return '"%s"' % x.replace('\\','\\\\').replace('"','\\"').replace('\n','\\n')
def sanitize(x):
x = x.replace('-','').replace('_','')
return ''.join(c if c in '0123456789abcdefghijklmnopqrstuvwxyz' else '_' for c in x)
exports = {}
prototypes = {}
ifunc = False
with open('dispatch/ifunc') as f:
for line in f:
if line.strip() == '1':
ifunc = True
with open('api') as f:
for line in f:
line = line.strip()
if line.startswith('crypto_'):
continue
if line.startswith('#define '):
continue
if line.endswith(');'):
fun,args = line[:-2].split('(')
rettype,fun = fun.split()
fun = fun.split('_')
o = fun[1]
assert fun[0] == 'crypto'
if o not in exports: exports[o] = []
exports[o] += ['_'.join(fun[1:])]
if o not in prototypes: prototypes[o] = []
prototypes[o] += [(rettype,fun,args)]
goal = sys.argv[1]
assert goal in ('auto','manual')
o = sys.argv[2]
p = sys.argv[3]
host = sys.argv[4]
namespace = sys.argv[5]
impls = []
selected = []
usedimpls = set()
for line in sys.stdin:
line = line.split()
if line[0] == 'impl':
impls += [line[1:]]
if line[0] == 'selected':
a,i,c = line[1:]
selected += [(a,i,c)]
usedimpls.add((i,c))
with open('allarches') as f:
allarches = f.read().splitlines()
icarch = {}
iccompiler = {}
for i,c in impls:
with open('compilerarch/%s' % c) as f:
icarch[i,c] = f.read().strip()
with open('compilerversion/%s' % c) as f:
iccompiler[i,c] = f.read().strip()
if goal == 'manual':
allarches = [a for a in allarches if any(a == icarch[i,c] for i,c in impls)]
if goal == 'auto':
print(f'extern const char *{namespace}_%s_%s_implementation(void) __attribute__((visibility("default")));' % (o,p))
print(f'extern const char *{namespace}_%s_%s_compiler(void) __attribute__((visibility("default")));' % (o,p))
else:
print(f'extern const char *{namespace}_%s_%s_implementation(void);' % (o,p))
print(f'extern const char *{namespace}_%s_%s_compiler(void);' % (o,p))
print(f'extern const char *{namespace}_dispatch_%s_%s_implementation(long long) __attribute__((visibility("default")));' % (o,p))
print(f'extern const char *{namespace}_dispatch_%s_%s_compiler(long long) __attribute__((visibility("default")));' % (o,p))
print(f'extern long long {namespace}_numimpl_%s_%s(void) __attribute__((visibility("default")));' % (o,p))
for a in allarches:
if a == 'default': continue
a_csymbol = sanitize(a)
print(f'extern int {namespace}_supports_%s(void);' % a_csymbol)
if len(allarches) > 1: print('')
def printfun_auto(which,fun=None):
defaultpointer = '0'
if which == 'resolver':
shortfun = '_'.join(fun[1:])
pshortfun = '_'.join([o,p]+fun[2:])
print(f'void *{namespace}_auto_%s(void)' % (pshortfun))
elif which == 'implementation':
print(f'const char *{namespace}_%s_%s_implementation(void)' % (o,p))
elif which == 'compiler':
print(f'const char *{namespace}_%s_%s_compiler(void)' % (o,p))
else:
raise ValueError('unknown printfun %s' % which)
print('{')
for a,i,c in selected:
cond = ''
if a != 'default':
cond = f'if ({namespace}_supports_%s()) ' % sanitize(a)
if which == 'resolver':
thispointer = f'{namespace}_{o}_{p}_{sanitize(i)}_{c}_{shortfun}'
if a == 'default':
defaultpointer = thispointer
print(f' {cond}return {thispointer};')
if which == 'implementation':
print(' %sreturn %s;' % (cond,cstring(i)))
if which == 'compiler':
print(' %sreturn %s;' % (cond,cstring(iccompiler[i,c])))
if a == 'default': break
if len(selected) == 0:
print(' return 0; /* no compiled implementations; defer crash to run time */')
print('}')
if which == 'resolver':
if ifunc:
print('')
print(f'%s {namespace}_%s(%s) __attribute__((visibility("default"))) __attribute__((ifunc("{namespace}_auto_%s")));' % (rettype,pshortfun,args,pshortfun))
else:
print('')
print(f'static {rettype} (*{namespace}_{pshortfun}_pointer)({args}) = {defaultpointer};')
print('')
print('__attribute__((constructor(25519)))')
print(f'static void {namespace}_{pshortfun}_pointer_constructor(void)')
print('{')
print(f' {namespace}_{pshortfun}_pointer = {namespace}_auto_{pshortfun}();')
print('}')
print('')
namedparams = args.split(',')
namedargs = []
for i in range(len(namedparams)):
if namedparams[i][-1] != '*':
namedparams[i] += ' '
namedparams[i] += 'arg%d'%i
namedargs += ['arg%d'%i]
namedparams = ','.join(namedparams)
namedargs = ','.join(namedargs)
print('__attribute__((visibility("default")))')
print(f'{rettype} {namespace}_{pshortfun}({namedparams})')
print('{')
if rettype == 'void':
print(f' {namespace}_{pshortfun}_pointer({namedargs});')
else:
print(f' return {namespace}_{pshortfun}_pointer({namedargs});')
print('}')
for rettype,fun,args in prototypes[o]:
shortfun = '_'.join(fun[1:])
pshortfun = '_'.join([o,p]+fun[2:])
if goal == 'auto':
print(f'extern %s {namespace}_%s(%s) __attribute__((visibility("default")));' % (rettype,pshortfun,args))
else:
print(f'extern %s {namespace}_%s(%s);' % (rettype,pshortfun,args))
print(f'extern %s (*{namespace}_dispatch_%s(long long))(%s) __attribute__((visibility("default")));' % (rettype,pshortfun,args))
print('')
for i,c in impls:
if goal == 'auto':
if (i,c) not in usedimpls:
continue
print(f'extern %s {namespace}_%s_%s_%s_%s_%s(%s) __attribute__((visibility("default")));' % (rettype,o,p,sanitize(i),c,shortfun,args))
print('')
if goal == 'auto':
printfun_auto('resolver',fun)
if goal == 'manual':
print(f'%s (*{namespace}_dispatch_%s(long long impl))(%s)' % (rettype,pshortfun,args))
print('{')
for a in allarches:
if a == 'default': continue
a_csymbol = sanitize(a)
print(f' int supports_%s = {namespace}_supports_%s();' % (a_csymbol,a_csymbol))
print(' if (impl >= 0) {')
for i,c in impls:
a = icarch[i,c]
a_csymbol = sanitize(a)
if a == 'default':
print(f' if (!impl--) return {namespace}_%s_%s_%s_%s_%s;' % (o,p,sanitize(i),c,shortfun))
else:
print(f' if (supports_%s) if (!impl--) return {namespace}_%s_%s_%s_%s_%s;' % (a_csymbol,o,p,sanitize(i),c,shortfun))
print(' }')
print(f' return {namespace}_%s;' % (pshortfun))
print('}')
print('')
if goal == 'auto':
printfun_auto('implementation')
print('')
printfun_auto('compiler')
else:
print(f'const char *{namespace}_dispatch_%s_%s_implementation(long long impl)' % (o,p))
print('{')
for a in allarches:
if a == 'default': continue
a_csymbol = sanitize(a)
print(f' int supports_%s = {namespace}_supports_%s();' % (a_csymbol,a_csymbol))
print(' if (impl >= 0) {')
for i,c in impls:
a = icarch[i,c]
a_csymbol = sanitize(a)
if a == 'default':
print(' if (!impl--) return %s;' % (cstring(i)))
else:
print(' if (supports_%s) if (!impl--) return %s;' % (a_csymbol,cstring(i)))
print(' }')
print(f' return {namespace}_%s_%s_implementation();' % (o,p))
print('}')
print('')
print(f'const char *{namespace}_dispatch_%s_%s_compiler(long long impl)' % (o,p))
print('{')
for a in allarches:
if a == 'default': continue
a_csymbol = sanitize(a)
print(f' int supports_%s = {namespace}_supports_%s();' % (a_csymbol,a_csymbol))
print(' if (impl >= 0) {')
for i,c in impls:
a = icarch[i,c]
a_csymbol = sanitize(a)
if a == 'default':
print(' if (!impl--) return %s;' % (cstring(iccompiler[i,c])))
else:
print(' if (supports_%s) if (!impl--) return %s;' % (a_csymbol,cstring(iccompiler[i,c])))
print(' }')
print(f' return {namespace}_%s_%s_compiler();' % (o,p))
print('}')
print('')
print(f'long long {namespace}_numimpl_%s_%s(void)' % (o,p))
print('{')
numimpla = sum(1 for (i,c) in impls if icarch[i,c] == 'default')
numimpl = ['%d' % numimpla]
for a in allarches:
if a == 'default': continue
a_csymbol = sanitize(a)
print(f' long long supports_%s = {namespace}_supports_%s();' % (a_csymbol,a_csymbol))
numimpla = sum(1 for (i,c) in impls if icarch[i,c] == a)
numimpl += ['supports_%s*%d' % (a_csymbol,numimpla)]
print(' return %s;' % '+'.join(numimpl))
print('}')