Make improvements

This change progresses our AARCH64 support:

- The AARCH64 build and tests are now passing
- Add 128-bit floating-point support to printf()
- Fix clone() so it initializes cosmo's x28 TLS register
- Fix TLS memory layout issue with aarch64 _Alignas vars
- Revamp microbenchmarking tools so they work on aarch64
- Make some subtle improvements to aarch64 crash reporting
- Make kisdangerous() memory checks more accurate on aarch64
- Remove sys_open() since it's not available on Linux AARCH64

This change makes general improvements to Cosmo and Redbean:

- Introduce GetHostIsa() function in Redbean
- You can now feature check using pledge(0, 0)
- You can now feature check using unveil("",0)
- Refactor some more x86-specific asm comments
- Refactor and write docs for some libm functions
- Make the mmap() API behave more similar to Linux
- Fix WIFSIGNALED() which wrongly returned true for zero
- Rename some obscure cosmo keywords from noFOO to dontFOO

third_party/awk/awk.mk

@@ -52,7 +52,7 @@ o/$(MODE)/third_party/awk/awk.com.dbg:			\
 	@$(APELINK)
 
 o/$(MODE)/third_party/awk/README.zip.o:			\
-		ZIPOBJ_FLAGS =				\
+		ZIPOBJ_FLAGS +=				\
 			-B
 
 THIRD_PARTY_AWK_BINS = $(THIRD_PARTY_AWK_COMS) $(THIRD_PARTY_AWK_COMS:%=%.dbg)

third_party/chibicc/parse.c

@@ -555,7 +555,7 @@ static Token *thing_attributes(Token *tok, void *arg) {
   if (consume_attribute(&tok, tok, "noinline") ||
       consume_attribute(&tok, tok, "const") ||
       consume_attribute(&tok, tok, "pure") ||
-      consume_attribute(&tok, tok, "noclone") ||
+      consume_attribute(&tok, tok, "dontclone") ||
       consume_attribute(&tok, tok, "may_alias") ||
       consume_attribute(&tok, tok, "warn_unused_result") ||
       consume_attribute(&tok, tok, "flatten") ||

third_party/gcc/libexec/gcc/aarch64-linux-musl/9.2.0/ld.sym

@@ -0,0 +1 @@
+../../../../bin/aarch64-linux-musl-ld.bfd

third_party/lua/lunix.c

@@ -16,6 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "third_party/lua/lunix.h"
 #include "libc/assert.h"
 #include "libc/atomic.h"
 #include "libc/calls/calls.h"
@@ -112,7 +113,6 @@
 #include "third_party/lua/lgc.h"
 #include "third_party/lua/lua.h"
 #include "third_party/lua/luaconf.h"
-#include "third_party/lua/lunix.h"
 #include "third_party/nsync/futex.internal.h"
 #include "tool/net/luacheck.h"
 
@@ -1488,7 +1488,7 @@ static int LuaUnixPledge(lua_State *L) {
   int olderr = errno;
   __pledge_mode = luaL_optinteger(L, 3, 0);
   return SysretBool(L, "pledge", olderr,
-                    pledge(luaL_checkstring(L, 1), luaL_optstring(L, 2, 0)));
+                    pledge(luaL_optstring(L, 1, 0), luaL_optstring(L, 2, 0)));
 }
 
 // sandbox.unveil([path:str[, permissions:str]])

third_party/make/job.c

@@ -2118,6 +2118,7 @@ child_execute_job (struct childbase *child,
   else if (!(~ipromises & (1ul << PROMISE_INET)) &&
            !(~ipromises & (1ul << PROMISE_DNS)))
     DB (DB_JOBS, (_("Internet access will be blocked by pledge\n")));
+#ifdef __x86_64__
   else
     {
       e = errno;
@@ -2143,6 +2144,7 @@ child_execute_job (struct childbase *child,
             }
         }
     }
+#endif
 
   /* [jart] Resolve command into executable path.  */
   if (!strict || !sandboxed)

third_party/make/make.mk

@@ -153,7 +153,8 @@ o/$(MODE)/third_party/make/make.com.dbg:		\
 o/$(MODE)/third_party/make/make.com:			\
 		o/$(MODE)/third_party/make/make.com.dbg	\
 		o/$(MODE)/third_party/zip/zip.com	\
-		o/$(MODE)/tool/build/symtab.com
+		o/$(MODE)/tool/build/symtab.com		\
+		$(VM)
 	@$(MAKE_OBJCOPY)
 	@$(MAKE_SYMTAB_CREATE)
 	@$(MAKE_SYMTAB_ZIP)

third_party/python/freeze.c

@@ -5,6 +5,7 @@
 │ https://docs.python.org/3/license.html                                       │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
+#include "libc/log/log.h"
 #include "libc/mem/mem.h"
 #include "third_party/python/Include/bytesobject.h"
 #include "third_party/python/Include/compile.h"

third_party/python/python.mk

@@ -28,11 +28,16 @@ THIRD_PARTY_PYTHON_CHECKS =						\
 	$(THIRD_PARTY_PYTHON_STAGE1_A).pkg 				\
 	$(THIRD_PARTY_PYTHON_STAGE2_A).pkg				\
 	$(THIRD_PARTY_PYTHON_PYTEST_A).pkg				\
-	$(THIRD_PARTY_PYTHON_PYTEST_PYMAINS:%=o/$(MODE)/%.runs)		\
 	$(THIRD_PARTY_PYTHON_HDRS:%=o/$(MODE)/%.ok)			\
 	o/$(MODE)/third_party/python/python.pkg				\
 	o/$(MODE)/third_party/python/freeze.pkg
 
+# TODO: Deal with aarch64 under qemu not making execve() easy.
+ifeq ($(ARCH), x86_64)
+THIRD_PARTY_PYTHON_CHECKS +=						\
+	$(THIRD_PARTY_PYTHON_PYTEST_PYMAINS:%=o/$(MODE)/%.runs)
+endif
+
 ################################################################################
 # STAGE ONE - BOOTSTRAPPING PYTHON
 
@@ -4187,7 +4192,7 @@ $(THIRD_PARTY_PYTHON_HELLO_OBJS): private PYFLAGS += -C2 -m
 # this directory entry is at the tip of the tree
 # therefore building it requires special care
 o/$(MODE)/third_party/python/Lib/.zip.o: third_party/python/.python
-	@$(COMPILE) -wAZIPOBJ $(ZIPOBJ) -C2 $(OUTPUT_OPTION) third_party/python/.python
+	@$(COMPILE) -wAZIPOBJ $(ZIPOBJ) -b$(IMAGE_BASE_VIRTUAL) -C2 $(OUTPUT_OPTION) third_party/python/.python
 
 # these need to be explictly defined because landlock make won't sandbox
 # prerequisites with a trailing slash.