Make improvements

- More timspec_*() and timeval_*() APIs have been introduced.
- The copyfd() function is now simplified thanks to POSIX rules.
- More Cosmo-specific APIs have been moved behind the COSMO define.
- The setitimer() polyfill for Windows NT is now much higher quality.
- Fixed build error for MODE=aarch64 due to -mstringop-strategy=loop.
- This change introduces `make MODE=nox87 toolchain` which makes it
  possible to build programs using your cosmocc toolchain that don't
  have legacy fpu instructions. This is useful, for example, if you
  want to have a ~22kb tinier blink virtual machine.

tool/build/ar.c

@@ -30,7 +30,6 @@
 #include "libc/log/log.h"
 #include "libc/macros.internal.h"
 #include "libc/mem/arraylist2.internal.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/runtime.h"
 #include "libc/sock/sock.h"
@@ -322,8 +321,8 @@ int main(int argc, char *argv[]) {
       goto fail;
     }
     outsize += (remain = sizes.p[i]);
-    if (_copyfd(fd, outfd, remain) == -1) {
-      reason = "copy_file_range failed";
+    if (copyfd(fd, outfd, remain) == -1) {
+      reason = "copy failed";
       goto fail;
     }
     close(fd);

tool/build/compile.c

@@ -43,7 +43,6 @@
 #include "libc/macros.internal.h"
 #include "libc/math.h"
 #include "libc/mem/alg.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/mem/gc.internal.h"
 #include "libc/mem/mem.h"
 #include "libc/nexgen32e/kcpuids.h"
@@ -769,7 +768,7 @@ bool MovePreservingDestinationInode(const char *from, const char *to) {
         res = false;
         break;
       }
-      res = _copyfd(fdin, fdout, -1) != -1;
+      res = copyfd(fdin, fdout, -1) != -1;
       break;
     } else {
       res = false;

tool/build/cp.c

@@ -23,7 +23,6 @@
 #include "libc/fmt/conv.h"
 #include "libc/fmt/fmt.h"
 #include "libc/fmt/magnumstrs.internal.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/mem/gc.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/stdio.h"
@@ -176,7 +175,7 @@ bool MovePreservingDestinationInode(const char *from, const char *to) {
     close(fdin);
     return false;
   }
-  res = _copyfd(fdin, fdout, -1) != -1;
+  res = copyfd(fdin, fdout, -1) != -1;
   close(fdin);
   close(fdout);
   return res;

tool/build/ocat.c

@@ -20,7 +20,6 @@
 #include "libc/errno.h"
 #include "libc/fmt/itoa.h"
 #include "libc/fmt/magnumstrs.internal.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/ex.h"

tool/build/pledge.c

@@ -39,7 +39,6 @@
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/macros.internal.h"
 #include "libc/math.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/mem/gc.internal.h"
 #include "libc/mem/mem.h"
 #include "libc/nexgen32e/kcpuids.h"
@@ -523,7 +522,7 @@ int Extract(const char *from, const char *to, int mode) {
     close(fdin);
     return -1;
   }
-  if (_copyfd(fdin, fdout, -1) == -1) {
+  if (copyfd(fdin, fdout, -1) == -1) {
     close(fdout);
     close(fdin);
     return -1;

tool/plinko/lib/plinko.c

@@ -33,6 +33,7 @@
 #include "libc/runtime/symbols.internal.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
+#include "libc/sysv/consts/arch.h"
 #include "libc/sysv/consts/map.h"
 #include "libc/sysv/consts/o.h"
 #include "libc/sysv/consts/prot.h"

tool/scripts/cosmoc++

@@ -154,6 +154,10 @@ for x; do
   set -- "$@" "$x"
 done
 
+if [ x"$MODE" = x"nox87" ]; then
+  CCFLAGS="$CCFLAGS -mlong-double-64"
+fi
+
 if [ x"$OPT" != x"-Os" ] && [ x"${MODE#tiny}" != x"${MODE}" ]; then
   # support --ftrace unless optimizing for size
   CXXFLAGS="$CXXFLAGS -fpatchable-function-entry=18,16"

tool/scripts/cosmocc

@@ -154,6 +154,10 @@ for x; do
   set -- "$@" "$x"
 done
 
+if [ x"$MODE" = x"nox87" ]; then
+  CCFLAGS="$CCFLAGS -mlong-double-64"
+fi
+
 if [ x"$OPT" != x"-Os" ] && [ x"${MODE#tiny}" != x"${MODE}" ]; then
   # support --ftrace unless optimizing for size
   CFLAGS="$CFLAGS -fpatchable-function-entry=18,16"

tool/viz/int2float.c

@@ -1,82 +0,0 @@
-/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
-│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8                                :vi│
-╞══════════════════════════════════════════════════════════════════════════════╡
-│ Copyright 2020 Justine Alexandra Roberts Tunney                              │
-│                                                                              │
-│ Permission to use, copy, modify, and/or distribute this software for         │
-│ any purpose with or without fee is hereby granted, provided that the         │
-│ above copyright notice and this permission notice appear in all copies.      │
-│                                                                              │
-│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL                │
-│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED                │
-│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE             │
-│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL         │
-│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR        │
-│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER               │
-│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
-│ PERFORMANCE OF THIS SOFTWARE.                                                │
-╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/fmt/conv.h"
-#include "libc/limits.h"
-#include "libc/macros.internal.h"
-#include "libc/mem/gc.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/x/x.h"
-#include "libc/x/xasprintf.h"
-
-float b32;
-double b64;
-long double b80;
-uint32_t u32;
-uint64_t u64;
-int128_t x;
-
-void int2float(const char *s) {
-  x = strtoi128(s, NULL, 0);
-  if ((0 <= x && x <= UINT32_MAX) && !_startswith(s, "-") &&
-      (!_endswith(s, "l") && !_endswith(s, "L"))) {
-    u32 = x;
-    memcpy(&b32, &u32, 4);
-    s = _gc(xdtoa(b32));
-    if (!strchr(s, '.')) s = _gc(xasprintf("%s.", s));
-    s = _gc(xasprintf("%sf", s));
-    puts(s);
-  } else if ((0 <= x && x <= UINT64_MAX) && !_startswith(s, "-")) {
-    u64 = x;
-    memcpy(&b64, &u64, 8);
-    s = _gc(xdtoa(b64));
-    if (!strchr(s, '.')) s = _gc(xasprintf("%s.", s));
-    puts(s);
-  } else if ((INT32_MIN <= x && x <= 0) &&
-             (!_endswith(s, "l") && !_endswith(s, "L"))) {
-    u32 = ABS(x);
-    memcpy(&b32, &u32, 4);
-    b32 = -b32;
-    s = _gc(xdtoa(b32));
-    if (!strchr(s, '.')) s = _gc(xasprintf("%s.", s));
-    s = _gc(xasprintf("%sf", s));
-    puts(s);
-  } else if (INT64_MIN <= x && x <= 0) {
-    u64 = ABS(x);
-    memcpy(&b64, &u64, 8);
-    b64 = -b64;
-    s = _gc(xdtoa(b64));
-    if (!strchr(s, '.')) s = _gc(xasprintf("%s.", s));
-    puts(s);
-  } else {
-    memcpy(&b80, &x, 16);
-    s = _gc(xdtoa(b80));
-    if (!strchr(s, '.')) s = _gc(xasprintf("%s.", s));
-    s = _gc(xasprintf("%sL", s));
-    puts(s);
-  }
-}
-
-int main(int argc, char *argv[]) {
-  int i;
-  for (i = 1; i < argc; ++i) {
-    int2float(argv[i]);
-  }
-  return 0;
-}

tool/viz/printpeb.c

@@ -21,7 +21,6 @@
 #include "libc/dce.h"
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/log/log.h"
-#include "libc/mem/copyfd.internal.h"
 #include "libc/nt/dll.h"
 #include "libc/nt/enum/filetype.h"
 #include "libc/nt/enum/startf.h"
@@ -58,7 +57,7 @@ int NextBestThing(void) {
   int64_t fd = open("/proc/self/maps", O_RDONLY);
   posix_fadvise(fd, 0, 0, MADV_SEQUENTIAL);
   ssize_t wrote;
-  while ((wrote = _copyfd(fd, 1, -1)) != -1) {
+  while ((wrote = copyfd(fd, 1, -1)) != -1) {
     if (wrote == 0) break;
   }
   close(fd);