Clean up some code

- Use good ELF technique in cosmo_dlopen()
- Make strerror() conform more to other libc impls
- Introduce __clear_cache() and use it in cosmo_dlopen()
- Remove libc/fmt/fmt.h header (trying to kill off LIBC_FMT)

libc/log/attachdebugger.c

@@ -19,7 +19,6 @@
 #include "libc/calls/calls.h"
 #include "libc/calls/syscall-sysv.internal.h"
 #include "libc/dce.h"
-#include "libc/fmt/fmt.h"
 #include "libc/fmt/itoa.h"
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/log/color.internal.h"

libc/log/backtrace3.c

@@ -18,7 +18,6 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
 #include "libc/calls/calls.h"
-#include "libc/fmt/fmt.h"
 #include "libc/fmt/itoa.h"
 #include "libc/intrin/kprintf.h"
 #include "libc/intrin/weaken.h"

libc/log/checkfail.c

@@ -18,7 +18,6 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
 #include "libc/errno.h"
-#include "libc/fmt/fmt.h"
 #include "libc/intrin/kprintf.h"
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/intrin/strace.internal.h"
@@ -32,8 +31,6 @@
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"
 
-__static_yoink("strerror_wr");
-
 /**
  * Handles failure of CHECK_xx() macros.
  */

libc/log/cxaprintexits.c

@@ -16,7 +16,6 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/fmt/fmt.h"
 #include "libc/intrin/bsf.h"
 #include "libc/intrin/cxaatexit.internal.h"
 #include "libc/log/log.h"

libc/log/gdbexec.c

@@ -17,7 +17,6 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
-#include "libc/fmt/fmt.h"
 #include "libc/intrin/safemacros.internal.h"
 #include "libc/log/gdb.h"
 #include "libc/log/log.h"

libc/log/logerrno.c

@@ -17,7 +17,6 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/errno.h"
-#include "libc/fmt/fmt.h"
 #include "libc/log/log.h"
 #include "libc/stdio/stdio.h"
 #include "libc/str/str.h"

libc/log/meminfo.c

@@ -17,14 +17,13 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/calls.h"
-#include "libc/stdio/dprintf.h"
-#include "libc/fmt/fmt.h"
 #include "libc/log/log.h"
 #include "libc/mem/mem.h"
+#include "libc/stdio/dprintf.h"
 
 static void onmemchunk(void *start, void *end, size_t used_bytes, void *arg) {
-  (dprintf)(*(int *)arg, "%p - %p : %08zx / %08lx\n", start, end, used_bytes,
-            (intptr_t)end - (intptr_t)start);
+  dprintf(*(int *)arg, "%p - %p : %08zx / %08lx\n", start, end, used_bytes,
+          (intptr_t)end - (intptr_t)start);
 }
 
 /**
@@ -32,7 +31,6 @@ static void onmemchunk(void *start, void *end, size_t used_bytes, void *arg) {
  */
 void _meminfo(int fd) {
   _memsummary(fd);
-  (dprintf)(fd, "%*s   %*s   %*s   %*s\n", POINTER_XDIGITS, "start",
-            POINTER_XDIGITS, "end", 8, "used", 8, "size");
+  dprintf(fd, "%12s   %12s   %8s   %8s\n", "start", "end", "used", "size");
   malloc_inspect_all(onmemchunk, &fd);
 }

libc/log/oncrash_amd64.c

@@ -58,9 +58,6 @@
 #include "libc/thread/tls.h"
 #ifdef __x86_64__
 
-__static_yoink("strerror_wr");  // for kprintf %m
-__static_yoink("strsignal_r");  // for kprintf %G
-
 #define STACK_ERROR "error: not enough room on stack to print crash report\n"
 
 static const char kGregOrder[17] forcealign(1) = {

libc/log/oncrash_arm64.c

@@ -51,9 +51,6 @@
 #include "libc/thread/thread.h"
 #ifdef __aarch64__
 
-__static_yoink("strerror_wr");  // for kprintf %m
-__static_yoink("strsignal_r");  // for kprintf %G
-
 #define STACK_ERROR "error: not enough room on stack to print crash report\n"
 
 #define RESET   "\e[0m"

libc/log/vflogf.c

@@ -24,7 +24,6 @@
 #include "libc/dce.h"
 #include "libc/errno.h"
 #include "libc/fmt/conv.h"
-#include "libc/fmt/fmt.h"
 #include "libc/fmt/libgen.h"
 #include "libc/intrin/bits.h"
 #include "libc/intrin/safemacros.internal.h"