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|
use std
use "opts"
use "types"
pkg bld =
type syssel(@a) = struct
file : byte[:]
line : int
targ : byte[:]
sysattrs : std.htab(byte[:], (int, int, int))#
_match : std.htab(byte[:], (int, int))#
_best : std.htab(byte[:], @a)#
;;
generic mksyssel : (b : build#, f : byte[:], line : int, targ : byte[:] -> syssel(@a)#)
generic sysseladd : (syssel : syssel(byte[:])#, file : byte[:] -> void)
generic sysseladdlist : (syssel : syssel(@a)#, base : byte[:], attrs : byte[:][:], val : @a -> void)
generic sysselfin : (syssel : syssel(@a)# -> @a[:])
const addsysattrs : (sa : build#, tags : byte[:][:] -> void)
;;
generic mksyssel = {b, file, line, targ
var syssel
syssel = std.mk([
.file = file,
.line = line,
.targ = targ,
._match = std.mkht(),
._best = std.mkht(),
.sysattrs = b.tags
])
-> syssel
}
generic sysseladd = {syssel, f
var basename, attrs
var attrlist
match std.strfind(f, "+")
| `std.Some i:
basename = f[:i]
match std.strrfind(f[i+1:], ".")
| `std.Some j: attrs = f[i+1:][:j]
| `std.None: std.fatal("unrecognized type for file {}\n", f)
;;
| `std.None:
match std.strrfind(f, ".")
| `std.None: std.fatal("unrecognized type for file {}\n", f)
| `std.Some i:
basename = f[:i]
attrs = ""
;;
;;
attrlist = std.strsplit(attrs, "-")
sysseladdlist(syssel, basename, attrlist, f)
std.slfree(attrlist)
}
generic sysseladdlist = {syssel, base, attrs, val
var nmatch, vscore, n, v, s
nmatch = 0
vscore = 0
for a : attrs
match std.strfind(a, ":")
| `std.Some i:
n = a[:i]
v = parseversion(a[i+1:])
| `std.None:
n = a
v = (-1, -1, -1)
;;
match std.htget(syssel.sysattrs, n)
| `std.None:
nmatch = -1
break
| `std.Some have:
s = versionscore(syssel, have, v)
if s < 0
nmatch = -1
break
;;
vscore += s
nmatch++
;;
;;
match std.htgetv(syssel._match, base, (-1, -1))
| (curbest, curscore):
if curbest < nmatch || (nmatch >= 0 && curbest == nmatch && curscore < vscore)
std.htput(syssel._match, base, (nmatch, vscore))
std.htput(syssel._best, base, val)
;;
;;
}
const versionscore = {syssel, have, want
var s
s = 0
match (have, want)
| ((a0, a1, a2), (v0, v1, v2)):
if a0 == -1 && a1 == -1 && a2 == -1
-> s
elif v0 == -1 && v1 == -1 && v2 == -1
-> s
else
s = 1_000_000 * (a0 - v0)
if s == 0
s += 1_000 * (a1 - v1)
;;
if s == 0
s += (a2 - v2)
;;
if s >= 0
s = 100_000_000 - s
;;
-> s
;;
;;
}
generic sysselfin = {syssel
var keys, nmatch, ret
keys = std.htkeys(syssel._match)
ret = [][:]
for k : keys
(nmatch, _) = std.htgetv(syssel._match, k, (-1, -1))
if nmatch == -1
std.fatal("{}:{}: target {}, no applicable file for '{}'\n", \
syssel.file, syssel.line, syssel.targ, k)
;;
std.slpush(&ret, std.get(std.htget(syssel._best, k)))
;;
std.htfree(syssel._match)
std.htfree(syssel._best)
-> ret
}
const addsysattrs = {b, tags
if opt_alltags.len > 0
for t : opt_alltags
tag(b, t)
;;
else
std.htput(b.tags, opt_sys, opt_sysvers)
match opt_sys
| "freebsd": tag(b, "posixy")
| "netbsd": tag(b, "posixy")
| "openbsd": tag(b, "posixy")
| "osx": tag(b, "posixy")
| "linux": tag(b, "posixy")
| "plan9":
| unknown: std.fatal("unknown system \"{}\"\n", unknown)
;;
match opt_arch
| "x64":
tag(b, "x64")
if opt_cpufeatures & CpuidSSE2 == CpuidSSE2
tag(b, "sse2")
;;
if opt_cpufeatures & CpuidSSE4 == CpuidSSE4
tag(b, "sse4")
;;
if opt_cpufeatures & CpuidFMA == CpuidFMA
tag(b, "fma")
;;
| unknown:
std.fatal("unknown architecture {}\n", unknown)
;;
for t : tags
tag(b, t)
;;
loadtagfile(b, "bld.tag")
;;
}
const loadtagfile = {b, tagfile
var data, sp
if !std.fexists(tagfile)
-> void
;;
data = std.try(std.slurp(tagfile))
while true
sp = std.strtok(data)
for t : sp
tag(b, t)
;;
std.slfree(sp)
;;
std.slfree(data)
}
const tag = {b, tag
std.htput(b.tags, std.sldup(tag), (-1, -1, -1))
}
|
