Fix the build

2026-11-08 08:08:04 -10:00 · 2022-10-14 11:18:40 -07:00
1596 changed files with 31716 additions and 94898 deletions
@@ -8,7 +8,6 @@ AlwaysBreakBeforeMultilineStrings: false
 AllowShortFunctionsOnASingleLine: false
 KeepEmptyLinesAtTheStartOfBlocks: true
 ConstructorInitializerAllOnOneLineOrOnePerLine: true
-IncludeBlocks: Merge
 ---
 Language: Cpp
 AllowShortFunctionsOnASingleLine: false
@@ -60,8 +60,8 @@
 #   build/config.mk

 SHELL      = build/bootstrap/cocmd.com
-HOSTS     ?= freebsd openbsd netbsd rhel7 rhel5 xnu win10
-MAKEFLAGS += --no-builtin-rules
+HOSTS     ?= freebsd openbsd netbsd rhel7 rhel5 win10 xnu
+MAKEFLAGS += -j --no-builtin-rules

 .SUFFIXES:
 .DELETE_ON_ERROR:
@@ -92,7 +92,6 @@ o/$(MODE):			\
 .UNVEIL =			\
 	libc/integral		\
 	libc/disclaimer.inc	\
-	rwc:/dev/shm		\
 	rx:build/bootstrap	\
 	rx:o/third_party/gcc	\
 	/proc/stat		\
@@ -121,7 +120,6 @@ include libc/tinymath/tinymath.mk		# │  You can issue raw system calls
 include third_party/compiler_rt/compiler_rt.mk	# │
 include libc/str/str.mk				# │
 include third_party/xed/xed.mk			# │
-include third_party/puff/puff.mk		# │
 include third_party/zlib/zlib.mk		# │
 include third_party/double-conversion/dc.mk	# │
 include libc/elf/elf.mk				# │
@@ -129,17 +127,16 @@ include ape/ape.mk				# │
 include libc/fmt/fmt.mk				# │
 include libc/vga/vga.mk				#─┘
 include libc/calls/calls.mk			#─┐
-include third_party/getopt/getopt.mk		# │
 include libc/runtime/runtime.mk			# ├──SYSTEMS RUNTIME
 include libc/crt/crt.mk				# │  You can issue system calls
 include third_party/nsync/nsync.mk		# │
 include third_party/dlmalloc/dlmalloc.mk	#─┘
 include libc/mem/mem.mk				#─┐
-include third_party/gdtoa/gdtoa.mk		# ├──DYNAMIC RUNTIME
-include third_party/nsync/mem/mem.mk		# │  You can now use stdio
-include libc/thread/thread.mk			# │  You can finally call malloc()
-include libc/zipos/zipos.mk			# │
-include libc/time/time.mk			# │
+include libc/zipos/zipos.mk			# ├──DYNAMIC RUNTIME
+include third_party/gdtoa/gdtoa.mk		# │  You can now use stdio
+include libc/time/time.mk			# │  You can finally call malloc()
+include third_party/nsync/mem/mem.mk		# │
+include libc/thread/thread.mk			# │
 include libc/stdio/stdio.mk			# │
 include third_party/libcxx/libcxx.mk		# │
 include net/net.mk				# │
@@ -153,6 +150,7 @@ include dsp/mpeg/mpeg.mk			# │
 include dsp/dsp.mk				# │
 include third_party/zlib/gz/gz.mk		# │
 include third_party/musl/musl.mk		# │
+include third_party/getopt/getopt.mk		# │
 include libc/libc.mk				#─┘
 include libc/sock/sock.mk			#─┐
 include dsp/tty/tty.mk				# ├──ONLINE RUNTIME
@@ -173,12 +171,9 @@ include third_party/maxmind/maxmind.mk
 include net/finger/finger.mk
 include third_party/double-conversion/test/test.mk
 include third_party/lua/lua.mk
-include third_party/tr/tr.mk
 include third_party/sed/sed.mk
 include third_party/awk/awk.mk
-include third_party/hiredis/hiredis.mk
 include third_party/make/make.mk
-include third_party/ctags/ctags.mk
 include third_party/finger/finger.mk
 include third_party/argon2/argon2.mk
 include third_party/smallz4/smallz4.mk
@@ -195,7 +190,6 @@ include third_party/python/python.mk
 include tool/build/emucrt/emucrt.mk
 include tool/build/emubin/emubin.mk
 include tool/build/build.mk
-include tool/curl/curl.mk
 include examples/examples.mk
 include examples/pyapp/pyapp.mk
 include examples/pylife/pylife.mk
@@ -282,14 +276,14 @@ o/$(MODE)/hdrs-old.txt: o/$(MODE)/.x $(MAKEFILES) $(call uniq,$(foreach x,$(HDRS
 	$(file >$@) $(foreach x,$(HDRS) $(INCS),$(file >>$@,$(x)))

 TAGS: private .UNSANDBOXED = 1
-TAGS:	o/$(MODE)/srcs-old.txt $(SRCS) o/$(MODE)/third_party/ctags/ctags.com
+TAGS:	o/$(MODE)/srcs-old.txt $(SRCS)
 	@$(RM) $@
-	@o/$(MODE)/third_party/ctags/ctags.com $(TAGSFLAGS) -L $< -o $@
+	@$(TAGS) $(TAGSFLAGS) -L $< -o $@

 HTAGS: private .UNSANDBOXED = 1
-HTAGS:	o/$(MODE)/hdrs-old.txt $(HDRS) o/$(MODE)/third_party/ctags/ctags.com
+HTAGS:	o/$(MODE)/hdrs-old.txt $(HDRS)
 	@$(RM) $@
-	@build/htags o/$(MODE)/third_party/ctags/ctags.com -L $< -o $@
+	@build/htags -L $< -o $@

 loc: private .UNSANDBOXED = 1
 loc: o/$(MODE)/tool/build/summy.com
@@ -310,6 +304,7 @@ COSMOPOLITAN_OBJECTS =			\
 	LIBC_LOG			\
 	LIBC_TIME			\
 	LIBC_ZIPOS			\
+	THIRD_PARTY_ZLIB		\
 	THIRD_PARTY_MUSL		\
 	LIBC_STDIO			\
 	THIRD_PARTY_GDTOA		\
@@ -335,7 +330,6 @@ COSMOPOLITAN_OBJECTS =			\
 	LIBC_NT_ADVAPI32		\
 	LIBC_NT_SYNCHRONIZATION		\
 	LIBC_FMT			\
-	THIRD_PARTY_PUFF		\
 	THIRD_PARTY_COMPILER_RT		\
 	LIBC_TINYMATH			\
 	THIRD_PARTY_XED			\
@@ -375,9 +369,11 @@ COSMOPOLITAN_HEADERS =			\
 	THIRD_PARTY_GDTOA		\
 	THIRD_PARTY_GETOPT		\
 	THIRD_PARTY_MUSL		\
+	THIRD_PARTY_ZLIB		\
+	THIRD_PARTY_ZLIB_GZ		\
 	THIRD_PARTY_REGEX

-o/$(MODE)/cosmopolitan.a:		\
+o/$(MODE)/cosmopolitan.a:	\
 		$(foreach x,$(COSMOPOLITAN_OBJECTS),$($(x)_A_OBJS))

 o/cosmopolitan.h:							\
@@ -440,9 +436,9 @@ $(SRCS):
 $(HDRS):
 $(INCS):
 .DEFAULT:
-	@$(ECHO)
-	@$(ECHO) NOTE: deleting o/$(MODE)/depend because of an unspecified prerequisite: $@
-	@$(ECHO)
+	@$(ECHO) >&2
+	@$(ECHO) NOTE: deleting o/$(MODE)/depend because of an unspecified prerequisite: $@ >&2
+	@$(ECHO) >&2
 	$(RM) o/$(MODE)/depend

 -include o/$(MODE)/depend
@@ -23,8 +23,8 @@ If you're doing your development work on Linux or BSD then you need just
 five files to get started. Here's what you do on Linux:

 ```sh
-wget https://justine.lol/cosmopolitan/cosmopolitan-amalgamation-2.2.zip
-unzip cosmopolitan-amalgamation-2.2.zip
+wget https://justine.lol/cosmopolitan/cosmopolitan-amalgamation-2.1.1.zip
+unzip cosmopolitan-amalgamation-2.1.1.zip
 printf 'main() { printf("hello world\\n"); }\n' >hello.c
 gcc -g -Os -static -nostdlib -nostdinc -fno-pie -no-pie -mno-red-zone \
  -fno-omit-frame-pointer -pg -mnop-mcount -mno-tls-direct-seg-refs -gdwarf-4 \
@@ -57,13 +57,9 @@ sudo sh -c 'echo -1 >/proc/sys/fs/binfmt_misc/status'

 Since we used the `ape-no-modify-self.o` bootloader (rather than
 `ape.o`) your executable will not modify itself when it's run. What
-it'll instead do, is extract a 4kb program (the [APE loader](https://justine.lol/apeloader/))
-to `${TMPDIR:-${HOME:-.}}` that maps your program into memory without
-needing to copy it. The APE loader must be in an executable location
-(e.g. not stored on a `noexec` mount) for it to run. See below for
-alternatives:
-
-It's possible to install the APE loader systemwide as follows.
+it'll instead do, is extract a 4kb program to `${TMPDIR:-${HOME:-.}}`
+that maps your program into memory without needing to copy it. It's
+possible to install the APE loader systemwide as follows.

 ```sh
 # System-Wide APE Install
@@ -243,11 +239,6 @@ You normally run the `.com.dbg` file under gdb. If you need to debug the
 gdb foo.com -ex 'add-symbol-file foo.com.dbg 0x401000'
 ```

-## Discord Chatroom
-
-The Cosmopolitan development team collaborates on the Redbean Discord
-server. You're welcome to join us! <https://discord.gg/FwAVVu7eJ4>
-
 ## Support Vector

 | Platform        | Min Version | Circa |
@@ -255,16 +246,12 @@ server. You're welcome to join us! <https://discord.gg/FwAVVu7eJ4>
 | AMD             | K8 Venus    | 2005  |
 | Intel           | Core        | 2006  |
 | Linux           | 2.6.18      | 2007  |
-| Windows         | 8 [1]       | 2012  |
+| Windows         | 8           | 2012  |
 | Mac OS X        | 15.6        | 2018  |
 | OpenBSD         | 6.4         | 2018  |
 | FreeBSD         | 13          | 2020  |
 | NetBSD          | 9.2         | 2021  |

-[1] See our [vista branch](https://github.com/jart/cosmopolitan/tree/vista)
-    for a community supported version of Cosmopolitan that works on Windows
-    Vista and Windows 7.
-
 ## Special Thanks

 Funding for this project is crowdsourced using
@@ -35,7 +35,6 @@
 #include "ape/macros.internal.h"
 #include "ape/notice.inc"
 #include "ape/relocations.h"
-#include "libc/calls/metalfile.internal.h"
 #include "libc/dce.h"
 #include "libc/elf/def.h"
 #include "libc/macho.internal.h"
@@ -113,33 +112,7 @@ cstr:	.endobj	cstr,globl,hidden		# ←for gdb readability
 //
 //	@param	dl is drive number
 //	@noreturn
-ape_mz:
-#if SupportsWindows() || SupportsMetal()
-	.asciz	"MZqFpD='\n"		# Mark 'Zibo' Joseph Zbikowski
-//	# in real mode
-//	dec	%bp
-//	pop	%dx
-//	jno	0x4a
-//	jo	0x4a
-//
-//	# in legacy mode
-//	push	%ebp
-//	pop	%edx
-//	jno	0x4a
-//	jo	0x4a
-//
-//	# 64-bit mode
-//	rex.WRB
-//	pop	%r10
-//	jno	0x4a
-//	jo	0x4a
-#else
-//	Avoid virus scanner reputation damage when targeting System Five.
-	.asciz	"jartsr='\n"		# Justine Alexandra Roberts Tunney
-//	push	$0x61
-//	jb	0x78
-//	jae	0x78
-#endif
+ape_mz:	.asciz	"MZqFpD='\n"		# Mark 'Zibo' Joseph Zbikowski
 	.short	0x1000			# MZ: lowers upper bound load / 16
 	.short	0xf800			# MZ: roll greed on bss
 	.short	0			# MZ: lower bound on stack segment
@@ -158,9 +131,6 @@ ape_mz:
 	.long	RVA(ape_pe)		# PE: the new technology
 #else
 	.long	0
-	.org	0x78
-	pop	%rax
-	jmp	_start
 #endif
 	.endfn	ape_mz,globl,hidden

@@ -282,9 +252,6 @@ pc:	cld
 	xor	%dh,%dh				# current head
 	mov	$v_ape_realsectors,%di		# total sectors
 3:	call	pcread
-	mov	%es,%si				# addr += 512
-	add	$512>>4,%si
-	mov	%si,%es
 	dec	%di
 	jnz	3b
 6:	ljmp	$0,$REAL(realmodeloader)
@@ -373,7 +340,6 @@ dsknfo:	push	%bx
 	pop	%ds
 	xchg	%bx,%ax
 	stosw	#→ pc_drive_type, pc_drive_last_sector
-	scasb
 	xchg	%cx,%ax
 	stosw	#→ pc_drive_last_cylinder
 	xchg	%dx,%ax
@@ -412,6 +378,9 @@ pcread:	push	%ax
 	pop	%cx
 	pop	%ax
 	jc	9f
+	mov	%es,%si			# addr += 512
+	add	$512>>4,%si
+	mov	%si,%es
 	inc	%al			# ++sector
 	cmp	mm+"struct mman::pc_drive_last_sector",%al
 	jbe	2f
@@ -581,9 +550,6 @@ ape_disk:

 #if SupportsWindows() || SupportsMetal() || SupportsXnu()
 apesh:	.ascii	"\n@\n#'\"\n"			# sixth edition shebang
-	.ascii	"m=\"$(uname -m)\"\n"
-
-	.ascii	"if [ \"$m\" = x86_64 ] || [ \"$m\" = amd64 ]; then\n"
 //	Until all operating systems can be updated to support APE,
 //	we have a beautiful, yet imperfect workaround, which is to
 //	modify the binary to follow the local system's convention.
@@ -685,99 +651,17 @@ apesh:	.ascii	"\n@\n#'\"\n"			# sixth edition shebang
 	.ascii	"o=\"$t\"\n"
 	.ascii	"exec \"$o\" \"$@\"\n"
 #endif /* APE_NO_MODIFY_SELF */
-	.ascii	"exit $?\n"
+	.ascii	"R=$?\n"
+	.ascii	"if [ \"$(uname -m)\" != x86_64 ]; then\n"
+	.ascii	  "Q=\"$(command -v qemu-x86_64)\" &&\n"
+	.ascii	    "exec \"$Q\" \"$o\" \"$@\"\n"
+#ifndef APE_NO_MODIFY_SELF
+	.ascii	"else\n"			# means argv[0] was wrong
+	.ascii	"  exec \"$o\" \"$@\"\n"	# so do a path resolution
+#endif /* APE_NO_MODIFY_SELF */
 	.ascii	"fi\n"
-
-	.ascii	"PHDRS='' <<'@'\n"
+	.ascii	"exit $R\n"
 	.endobj	apesh
-//	elf program headers get inserted here
-//	because they need to be in the first 4096 bytes
-        .section .emush,"a",@progbits
-emush:	.ascii	"\n@\n#'\"\n"
-	.ascii	"s=\"$(uname -s)\"\n"
-
-//	our script is running on a non-x86_64 architecture
-//	1. `dd` out the appropriate blink vm blob
-//	2. gunzip the blink virtual machine executable
-//	3. relaunch this program inside the blink vm
-	.ascii	"o=\"$(command -v \"$0\")\"\n"
-	.ascii	"e=\"${TMPDIR:-${HOME:-.}}/.ape-blink-0.9.2\"\n"
-
-//	Blink for Apple Silicon, e.g. M1 Macbook
-	.ascii	"if [ \"$s\" = Darwin ] && [ \"$m\" = arm64 ]; then\n"
-	.ascii	"if ! [ -x \"$e\" ]; then\n"
-	.ascii	"echo \"extracting blink-darwin-arm64 to ${e}\" >&2\n"
-	.ascii	"dd if=\"$o\" bs=1 skip=$(("
-	.byte	blink_darwin_arm64_b9
-	.byte	blink_darwin_arm64_b8
-	.byte	blink_darwin_arm64_b7
-	.byte	blink_darwin_arm64_b6
-	.byte	blink_darwin_arm64_b5
-	.byte	blink_darwin_arm64_b4
-	.byte	blink_darwin_arm64_b3
-	.byte	blink_darwin_arm64_b2
-	.byte	blink_darwin_arm64_b1
-	.byte	blink_darwin_arm64_b0
-	.ascii	")) count=$(("
-	.byte	blink_darwin_arm64_size_b9
-	.byte	blink_darwin_arm64_size_b8
-	.byte	blink_darwin_arm64_size_b7
-	.byte	blink_darwin_arm64_size_b6
-	.byte	blink_darwin_arm64_size_b5
-	.byte	blink_darwin_arm64_size_b4
-	.byte	blink_darwin_arm64_size_b3
-	.byte	blink_darwin_arm64_size_b2
-	.byte	blink_darwin_arm64_size_b1
-	.byte	blink_darwin_arm64_size_b0
-	.ascii	")) conv=notrunc 2>/dev/null | gunzip >\"$e.$$\"\n"
-	.ascii	"mv -f \"$e.$$\" \"$e\"\n"
-	.ascii	"chmod +x \"$e\"\n"
-	.ascii	"fi\n"
-	.ascii	"exec \"$e\" \"$o\" \"$@\"\n"
-	.ascii	"fi\n"
-
-//	Blink for Aarch64 Linux, e.g. Raspberry Pi
-	.ascii	"if [ \"$s\" = Linux ]; then\n"
-	.ascii	"if [ \"$m\" = aarch64 ] || [ \"$m\" = arm64 ]; then\n"
-	.ascii	"if ! [ -x \"$e\" ]; then\n"
-	.ascii	"echo \"extracting blink-aarch64 to ${e}\" >&2\n"
-	.ascii	"dd if=\"$o\" bs=1 skip=$(("
-	.byte	blink_aarch64_b9
-	.byte	blink_aarch64_b8
-	.byte	blink_aarch64_b7
-	.byte	blink_aarch64_b6
-	.byte	blink_aarch64_b5
-	.byte	blink_aarch64_b4
-	.byte	blink_aarch64_b3
-	.byte	blink_aarch64_b2
-	.byte	blink_aarch64_b1
-	.byte	blink_aarch64_b0
-	.ascii	")) count=$(("
-	.byte	blink_aarch64_size_b9
-	.byte	blink_aarch64_size_b8
-	.byte	blink_aarch64_size_b7
-	.byte	blink_aarch64_size_b6
-	.byte	blink_aarch64_size_b5
-	.byte	blink_aarch64_size_b4
-	.byte	blink_aarch64_size_b3
-	.byte	blink_aarch64_size_b2
-	.byte	blink_aarch64_size_b1
-	.byte	blink_aarch64_size_b0
-	.ascii	")) conv=notrunc 2>/dev/null | gunzip >\"$e.$$\"\n"
-	.ascii	"mv -f \"$e.$$\" \"$e\"\n"
-	.ascii	"chmod +x \"$e\"\n"
-	.ascii	"fi\n"
-	.ascii	"exec \"$e\" \"$o\" \"$@\"\n"
-	.ascii	"fi\n"
-	.ascii	"fi\n"
-
-	.ascii	"echo unsupported architecture >&2\n"
-	.rept	16
-	.ascii	"exit 127\n"
-	.endr
-
-	.ascii	"exit 1\n"
-	.endobj	emush
 #ifdef APE_LOADER
        .section .ape.loader,"a",@progbits
 	.align	64
@@ -1197,42 +1081,6 @@ ape_idata_idt:
 ape_idata_idtend:
 	.previous

-	.section .piro.data.sort.metal_gdt,"aw",@progbits
-	.align	8
-_gdt:
-//	          ┌G:granularity (1 → limit *= 0x1000)
-//	          │┌D/B:default operation size (0 = 16|64bit, 1 = 32-bit)
-//	          ││┌L:long mode
-//	          │││┌AVL:this bit is thine (1<<52)
-//	          ││││    ┌P:present
-//	          ││││    │┌DPL:privilege
-//	          ││││    ││ ┌─────────data/code(1)
-//	          ││││    ││ │┌────data(0)──────code(1)
-//	          ││││    ││ ││┌───conforming───expand-down
-//	          ││││    ││ │││┌──writeable────readable
-//	          ││││    ││ ││││┌─accessed─────accessed
-//	          ││││    ││ │││││
-//	          ││││ ┌──││─│││││───────────────────────────────┐
-//	      ┌───││││─│──││─│││││───────────┐                   │
-//	  ┌───┴──┐││││┌┴─┐│├┐│││││┌──────────┴───────────┐┌──────┴───────┐
-//	  │      ││││││  ││││││││││          base address││ segment limit│
-//	  │      ││││││  ││││││││││               32 bits││       20 bits│
-//	  │      ││││││  ││││││││││                      ││              │
-//	  6666555555555544444444443333333333222222222211111111110000000000
-//	  3210987654321098765432109876543210987654321098765432109876543210
-//	  │      ││││││  ││││││││││                      ││              │
-.quad	0b0000000000000000000000000000000000000000000000000000000000000000 # 0
-.quad	0b0000000000001111100110100000000000000000000000001111111111111111 # 8
-.quad	0b0000000000001111100100100000000000000000000000001111111111111111 #16
-.quad	0b0000000011001111100110100000000000000000000000001111111111111111 #24
-.quad	0b0000000011001111100100100000000000000000000000001111111111111111 #32
-.quad	0b0000000010101111100110110000000000000000000000001111111111111111 #40
-.quad	0b0000000010101111100100110000000000000000000000001111111111111111 #48
-.tssdescstub _tss							#56,64
-_gdt_end:
-	.endobj	_gdt,global,hidden
-	.previous
-
 	.section .piro.data.sort.iat.1,"aw",@progbits
 	.type	ape_idata_iatend,@object
 	.type	ape_idata_iat,@object
@@ -1290,21 +1138,48 @@ sconf:	.short	1843200/*hz*/ / 16/*wut*/ / 9600/*baud*/

 //	Global Descriptor Table
 	.align	8
-_gdtrlo:
-	.short	2f-_gdtlo-1	# table byte length
-	.long	REAL(_gdtlo)	# table address (base memory space)
-	.endobj	_gdtrlo,global,hidden
+_gdtrphy:
+	.short	2f-1f-1		# table byte length
+	.long	REAL(1f)	# table address (physical space)
+	.endobj	_gdtrphy,global,hidden
 _gdtr:
-	.short	_gdt_end-_gdt-1	# table byte length
-	.quad	_gdt		# table address (final virtual space)
+	.short	2f-1f-1		# table byte length
+	.quad	1f		# table address (final virtual space)
 	.endobj	_gdtr,global,hidden
 	.align	8
-//	Partial GDT with descriptors for switching to unreal mode or long mode.
-_gdtlo	= .-GDT_LEGACY_DATA
+_gdt:
+1:
+//	          ┌G:granularity (1 → limit *= 0x1000)
+//	          │┌D/B:default operation size (0 = 16|64bit, 1 = 32-bit)
+//	          ││┌L:long mode
+//	          │││┌AVL:this bit is thine (1<<52)
+//	          ││││    ┌P:present
+//	          ││││    │┌DPL:privilege
+//	          ││││    ││ ┌─────────data/code(1)
+//	          ││││    ││ │┌────data(0)──────code(1)
+//	          ││││    ││ ││┌───conforming───expand-down
+//	          ││││    ││ │││┌──writeable────readable
+//	          ││││    ││ ││││┌─accessed─────accessed
+//	          ││││    ││ │││││
+//	          ││││ ┌──││─│││││───────────────────────────────┐
+//	      ┌───││││─│──││─│││││───────────┐                   │
+//	  ┌───┴──┐││││┌┴─┐│├┐│││││┌──────────┴───────────┐┌──────┴───────┐
+//	  │      ││││││  ││││││││││          base address││ segment limit│
+//	  │      ││││││  ││││││││││               32 bits││       20 bits│
+//	  │      ││││││  ││││││││││                      ││              │
+//	  6666555555555544444444443333333333222222222211111111110000000000
+//	  3210987654321098765432109876543210987654321098765432109876543210
+//	  │      ││││││  ││││││││││                      ││              │
+.quad	0b0000000000000000000000000000000000000000000000000000000000000000 # 0
+.quad	0b0000000000001111100110100000000000000000000000001111111111111111 # 8
+.quad	0b0000000000001111100100100000000000000000000000001111111111111111 #16
+.quad	0b0000000011001111100110100000000000000000000000001111111111111111 #24
 .quad	0b0000000011001111100100100000000000000000000000001111111111111111 #32
 .quad	0b0000000010101111100110110000000000000000000000001111111111111111 #40
 .quad	0b0000000010101111100100110000000000000000000000001111111111111111 #48
+.tssdescstub _tss							#56,64
 2:
+	.endobj	_gdt,global,hidden

 /*─────────────────────────────────────────────────────────────────────────────╗
 │ αcτµαlly pδrταblε εxεcµταblε § real mode                                     │
@@ -1312,7 +1187,6 @@ _gdtlo	= .-GDT_LEGACY_DATA
 	the default mode of operation on modern cpus */

 realmodeloader:
-	call	lhinit
 	call	rlinit
 	call	sinit4
 	.optfn	_start16
@@ -1320,25 +1194,6 @@ realmodeloader:
 	call	longmodeloader
 	.endfn	realmodeloader

-//	Prepares to later load parts of the program that are not loaded yet.
-//
-//	@param	al next sector number
-//	@param	cx next cylinder number
-//	@param	dh next head number
-//	@param	dl drive number
-//	@clob	ax, cx, es, di
-lhinit:	cmp	$0x40,%dl
-	je	9f
-	pushpop	0,%es
-	mov	$mm+"struct mman::pc_drive_next_sector",%di
-	cld
-	stosb	#→ pc_drive_next_sector
-	xchg	%ax,%cx
-	stosw	#→ pc_drive_next_cylinder
-	mov	%dh,%al
-	stosb	#→ pc_drive_next_head
-9:	ret
-
 	.section .sort.text.real.init.1,"ax",@progbits
 	.type	rlinit,@function
 rlinit:	.previous/*
@@ -1399,19 +1254,17 @@ longmodeloader:
 	call	lcheck
 	call	a20
 	call	e820
-	call	cpyhi
-	call	loadhi
 	call	pinit
 	call	golong
 	.endfn	longmodeloader

 //	Long Mode Hardware Check
-lcheck:	pushf				# checks for i8086 / i8088 / i80186
-	pop	%ax			# see intel manual volume 1 §20.1.2
-	test	$0x80,%ah
-	jnz	10f			# we now assume 32 bit is supported
-	pushfl				# now check for i386, or early i486
-	pop	%eax			# tests ability to change cpuid bit
+lcheck:	pushf				# check for i8086 / i8088 / i80186
+	pop	%ax
+	test	$0x80,%ah		# see intel manual volume 1 20.1.2
+	jnz	10f			# we now assume 32bit is supported
+	pushfl				# now check for i386 or early i486
+	pop	%eax			# test ability to change cpuid bit
 	mov	%eax,%ecx
 	mov	$1<<21,%ebx
 	xor	%ebx,%eax
@@ -1424,16 +1277,16 @@ lcheck:	pushf				# checks for i8086 / i8088 / i80186
 	or	%ebx,%eax		# puts cpuid bit in the on position
 	push	%eax
 	popfl
-	mov	$0x80000000,%edi	# get amd64 ext cpuid thingy length
+	mov	$0x80000000,%edi	# get amd ext cpuid thingy length
 	mov	%edi,%eax
 	inc	%edi
-	cpuid				# leaf 0x80000000, clob ax/bx/cx/dx
+	cpuid				# clobbers eax, ebx, ecx, and edx
 	cmp	%edi,%eax
 	jl	10f
 	mov	%edi,%eax
-	cpuid				# leaf 0x80000001, clob ax/bx/cx/dx
-	mov	$1<<29|1<<20,%edi	# 29 = LM (long), 20 = NX (no exec)
-	and	%edi,%edx		# we need to both, or we won't work
+	cpuid
+	mov	$1<<29|1<<20,%edi	# need nexgen32e long mode support
+	and	%edi,%edx		# & nx support
 	cmp	%edi,%edx
 	jne	10f
 	xor	%ax,%ax
@@ -1543,88 +1396,10 @@ a20:	cli
 5:	ret
 	.endfn	a20

-//	Copies program pages loaded into base memory, to extended memory.
-//
-//	@clob	esi, edi
-cpyhi:	push	%es
-	movpp	%ds,%es
-	call	unreal
-	mov	$IMAGE_BASE_REAL,%esi
-	mov	$IMAGE_BASE_PHYSICAL,%edi
-	mov	$v_ape_realdwords,%ecx
-	cld
-	rep movsl %ds:(%esi),%es:(%edi)
-	sti
-	pop	%es
-	ret
-	.endfn	cpyhi
-
-//	Disables interrupts and switches to "unreal mode".
-//
-//	@return	ds, es have same base addresses as before but can access
-//		4 GiB of memory
-//	@clob	eax
-unreal:	push	%ds
-	push	%es
-	cli
-	lgdt	REAL(_gdtrlo)
-	mov	%cr0,%eax
-	or	$CR0_PE,%al
-	mov	%eax,%cr0
-	jmp	0f
-0:	pushpop	GDT_LEGACY_DATA,%ds
-	movpp	%ds,%es
-	and	$~CR0_PE,%al
-	mov	%eax,%cr0
-	jmp	1f
-1:	pop	%es
-	pop	%ds
-	ret
-
-//	Reads any remaining program pages into memory which have not yet
-//	been read by the boot sector.
-//
-//	@clob	eax, ecx, dx, esi, edi, bp
-loadhi:	mov	$v_ape_highsectors,%bp
-	test	%bp,%bp
-	jz	9f
-	mov	$mm+"struct mman::pc_drive",%si
-	cld
-	lodsb	#← pc_drive
-	xchg	%ax,%dx
-	lodsw
-	lodsb	#← pc_drive_next_sector
-	test	%al,%al
-	jz	9f
-	xchg	%ax,%cx
-	lodsw	#← pc_drive_next_cylinder
-	xchg	%ax,%cx
-	mov	(%si),%dh #← pc_drive_next_head
-	push	%es
-#define	SEG 0x79000
-	mov	$IMAGE_BASE_PHYSICAL+v_ape_realbytes-SEG,%edi
-	push	$SEG>>4
-	pop	%es
-0:	call	pcread
-	push	%ax
-	call	unreal
-	pop	%ax
-	push	%cx
-	xor	%esi,%esi
-	xor	%ecx,%ecx
-	mov	$512/4,%cl
-	cld
-	rep movsl %es:(%esi),%es:(%edi)
-	sti
-	pop	%cx
-	dec	%bp
-	jnz	0b
-	pop	%es
-9:	ret
-
 //	Initializes long mode paging.
 pinit:	push	%ds
 	push	%es
+#define	SEG 0x79000
 	mov	$SEG>>4,%ax
 	mov	%ax,%ds
 	mov	%ax,%es
@@ -1665,7 +1440,7 @@ golong:	cli
 	rdmsr
 	or	$EFER_LME|EFER_SCE|EFER_NXE,%eax
 	wrmsr
-	lgdt	REAL(_gdtrlo)
+	lgdt	REAL(_gdtrphy)
 	mov	%cr0,%eax
 	or	$CR0_PE|CR0_PG|CR0_MP,%eax
 	and	$~CR0_EM,%eax
@@ -1675,9 +1450,7 @@ golong:	cli

 //	Long mode is long.
 	.code64
-long:	movabs	$BANE+PHYSICAL(0f),%rax
-	jmp	*%rax
-0:	xor	%eax,%eax
+long:	xor	%eax,%eax
 	mov	$GDT_LONG_DATA,%al
 	mov	%eax,%ds
 	mov	%eax,%ss
@@ -1685,16 +1458,18 @@ long:	movabs	$BANE+PHYSICAL(0f),%rax
 	mov	%eax,%fs
 	mov	%eax,%gs
 	mov	$0x80000,%esp
+	mov	$GDT_LONG_TSS,%al
+	ltr	%ax
 	xor	%r12d,%r12d
 	xor	%r13d,%r13d
 	xor	%r14d,%r14d
 	xor	%r15d,%r15d
 	xor	%ebx,%ebx
 	xor	%ebp,%ebp
+	push	%rbp
 	mov	$mm,%rdi
 	mov	%cr3,%rsi
-	mov	$IMAGE_BASE_PHYSICAL,%edx
-	lea	v_ape_allbytes(%rdx),%ecx
+	mov	$IMAGE_BASE_REAL,%edx
 	call	__map_phdrs
 	push	$0x037f
 	fldcw	(%rsp)
@@ -1780,25 +1555,21 @@ kernel:	movabs	$ape_stack_vaddr,%rsp
 	.byte	0x0f,0x1f,0207			# nop rdi binbase
 	.long	(IMAGE_BASE_VIRTUAL-IMAGE_BASE_REAL)/512
 #endif
-	movabs	$BANE+mm,%rdi
-	mov	$0x79000,%esi
-	mov	$0x7f000,%edx
-	call	__reclaim_boot_pages
 	push	$_HOSTMETAL			# sets __hostos in crt.S
 	pop	%rcx
-	pushq	.Lenv0(%rip)			# envp[0][0]
+	push	$0
 	mov	%rsp,%rbp
-	pushq	.Largv0+8(%rip)			# argv[0][8]
-	pushq	.Largv0(%rip)			# argv[0][0]
-	mov	%rsp,%rax
+	mov	.Lenv0(%rip),%rax
+	mov	%rax,(%rbp)			# envp[0][0]
+	push	$0				# argv[0][0]
 	push	$0				# auxv[1][1]
 	push	$0				# auxv[1][0]
-	push	%rax				# auxv[0][1]
+	push	%rbp				# auxv[0][1]
 	push	$31				# auxv[0][0] AT_EXECFN
 	push	$0				# envp[1]
-	push	%rbp				# envp[0]
+	push	$.Lenv0				# envp[0]
 	push	$0				# argv[1]
-	push	%rax				# argv[0]
+	push	%rbp				# argv[0]
 	push	$1				# argc
 	xor	%ebp,%ebp
 	xor	%eax,%eax
@@ -1814,9 +1585,6 @@ kernel:	movabs	$ape_stack_vaddr,%rsp

 	.rodata
 .Lenv0:	.asciz	"METAL=1"
-.Largv0:
-	.asciz	APE_COM_NAME
-	.org	.Largv0+16
 	.previous

 #endif /* SupportsMetal() */
@@ -1829,7 +1597,6 @@ kernel:	movabs	$ape_stack_vaddr,%rsp
 	.ldsvar	_end
 	.ldsvar	_etext
 	.ldsvar	v_ape_realsectors
-	.ldsvar	v_ape_realbytes
 	.ldsvar	v_ape_highsectors
 	.ldsvar	ape_idata_ro
 	.ldsvar	ape_pad_rodata
@@ -1923,21 +1690,5 @@ __bss_start:
 __bss_end:
 	.previous

-	.section .blink,"a",@progbits
-	.globl	blink_aarch64_size
-blink_aarch64:
-	.incbin	"ape/blink-aarch64.gz"
-	.endobj	blink_aarch64,globl
-blink_aarch64_size = . - blink_aarch64
-	.previous
-
-	.section .blink,"a",@progbits
-	.globl	blink_darwin_arm64_size
-blink_darwin_arm64:
-	.incbin	"ape/blink-darwin-arm64.gz"
-	.endobj	blink_darwin_arm64,globl
-blink_darwin_arm64_size = . - blink_darwin_arm64
-	.previous
-
 .end

@@ -216,8 +216,6 @@ SECTIONS {
    KEEP(*(.elf.phdrs))
    HIDDEN(ape_phdrs_end = .);

-    KEEP(*(.emush))
-
    /* OpenBSD */
    . = ALIGN(__SIZEOF_POINTER__);
    HIDDEN(ape_note = .);
@@ -275,7 +273,6 @@ SECTIONS {
    KEEP(*(.textwindowsprologue))
    *(.text.windows)
    KEEP(*(.textwindowsepilogue))
-    KEEP(*(.blink))
    *(SORT_BY_ALIGNMENT(.text.modernity))
    *(SORT_BY_ALIGNMENT(.text.modernity.*))
    *(SORT_BY_ALIGNMENT(.text.hot))
@@ -352,29 +349,8 @@ SECTIONS {
    HIDDEN(_etext = .);
    PROVIDE_HIDDEN(etext = .);
 /*END: Read Only Data (only needed for initialization) */
-  } :Rom
-
-/* initialization image for thread-local storage, this is copied */
-/* out to actual TLS areas at runtime, so just make it read-only */
-  .tdata . : {
-    _tdata_start = .;
-    *(SORT_BY_ALIGNMENT(.tdata))
-    *(SORT_BY_ALIGNMENT(.tdata.*))
-    _tdata_end = .;
-    . = ALIGN(PAGESIZE);
-  } :Tls :Rom
 /*END: Read Only Data */
-
-/* this only tells the linker about the layout of uninitialized */
-/* TLS data, and does not advance the linker's location counter */
-  .tbss . : {
-    _tbss_start = .;
-    *(SORT_BY_ALIGNMENT(.tbss))
-    *(SORT_BY_ALIGNMENT(.tbss.*))
-    . = ALIGN(TLS_ALIGNMENT);
-    /* the %fs register is based on this location */
-    _tbss_end = .;
-  } :Tls
+  } :Rom

  .data ALIGN(PAGESIZE) : {
 /*BEGIN: Read/Write Data */
@@ -409,7 +385,26 @@ SECTIONS {
    . = ALIGN(PAGESIZE);
  } :Ram

+  .tdata . : {
+    _tdata_start = .;
+    *(SORT_BY_ALIGNMENT(.tdata))
+    *(SORT_BY_ALIGNMENT(.tdata.*))
+    _tdata_end = .;
+    . = ALIGN(PAGESIZE);
+  } :Tls :Ram
+
 /*END:   file content that's loaded by o/s */
+/*BEGIN: bss memory void */
+
+  .tbss . : {
+    _tbss_start = .;
+    *(SORT_BY_ALIGNMENT(.tbss))
+    *(SORT_BY_ALIGNMENT(.tbss.*))
+    . = ALIGN(TLS_ALIGNMENT);
+    /* the %fs register is based on this location */
+    _tbss_end = .;
+  } :Tls
+
 /*END:   file content */
 /*BEGIN: bss memory that's addressable */

@@ -514,7 +509,7 @@ HIDDEN(ape_rom_rva = RVA(ape_rom_vaddr));
 HIDDEN(ape_ram_offset = ape_rom_offset + ape_rom_filesz);
 HIDDEN(ape_ram_vaddr = ADDR(.data));
 HIDDEN(ape_ram_paddr = LOADADDR(.data));
-HIDDEN(ape_ram_filesz = SIZEOF(.data));
+HIDDEN(ape_ram_filesz = SIZEOF(.data) + SIZEOF(.tdata));
 HIDDEN(ape_ram_memsz = ADDR(.bss) + SIZEOF(.bss) - ape_ram_vaddr);
 HIDDEN(ape_ram_align = PAGESIZE);
 HIDDEN(ape_ram_rva = RVA(ape_ram_vaddr));
@@ -538,16 +533,16 @@ HIDDEN(ape_note_align = __SIZEOF_POINTER__);
 HIDDEN(ape_text_offset = ape_rom_offset + LOADADDR(.text) - ape_rom_paddr);
 HIDDEN(ape_text_paddr = LOADADDR(.text));
 HIDDEN(ape_text_vaddr = ADDR(.text));
-HIDDEN(ape_text_filesz = SIZEOF(.text) + SIZEOF(.tdata));
-HIDDEN(ape_text_memsz = SIZEOF(.text) + SIZEOF(.tdata));
+HIDDEN(ape_text_filesz = SIZEOF(.text));
+HIDDEN(ape_text_memsz = SIZEOF(.text));
 HIDDEN(ape_text_align = PAGESIZE);
 HIDDEN(ape_text_rva = RVA(ape_text_vaddr));

 HIDDEN(ape_data_offset = ape_ram_offset + LOADADDR(.data) - ape_ram_paddr);
 HIDDEN(ape_data_paddr = LOADADDR(.data));
 HIDDEN(ape_data_vaddr = ADDR(.data));
-HIDDEN(ape_data_filesz = SIZEOF(.data));
-HIDDEN(ape_data_memsz = SIZEOF(.data));
+HIDDEN(ape_data_filesz = SIZEOF(.data) + SIZEOF(.tdata));
+HIDDEN(ape_data_memsz = SIZEOF(.data) + SIZEOF(.tdata));
 HIDDEN(ape_data_align = PAGESIZE);
 HIDDEN(ape_data_rva = RVA(ape_data_vaddr));

@@ -567,58 +562,13 @@ SHSTUB2(ape_loader_dd_count,
            ? ROUNDUP(ape_loader_end - ape_loader, PAGESIZE) / 64
            : 0);

-HIDDEN(blink_aarch64_b0 = RVA(blink_aarch64) % 10 + 48);
-HIDDEN(blink_aarch64_b1 = RVA(blink_aarch64) < 10 ? 32 : RVA(blink_aarch64) / 10 % 10 + 48);
-HIDDEN(blink_aarch64_b2 = RVA(blink_aarch64) < 100 ? 32 : RVA(blink_aarch64) / 100 % 10 + 48);
-HIDDEN(blink_aarch64_b3 = RVA(blink_aarch64) < 1000 ? 32 : RVA(blink_aarch64) / 1000 % 10 + 48);
-HIDDEN(blink_aarch64_b4 = RVA(blink_aarch64) < 10000 ? 32 : RVA(blink_aarch64) / 10000 % 10 + 48);
-HIDDEN(blink_aarch64_b5 = RVA(blink_aarch64) < 100000 ? 32 : RVA(blink_aarch64) / 100000 % 10 + 48);
-HIDDEN(blink_aarch64_b6 = RVA(blink_aarch64) < 1000000 ? 32 : RVA(blink_aarch64) / 1000000 % 10 + 48);
-HIDDEN(blink_aarch64_b7 = RVA(blink_aarch64) < 10000000 ? 32 : RVA(blink_aarch64) / 10000000 % 10 + 48);
-HIDDEN(blink_aarch64_b8 = RVA(blink_aarch64) < 100000000 ? 32 : RVA(blink_aarch64) / 100000000 % 10 + 48);
-HIDDEN(blink_aarch64_b9 = RVA(blink_aarch64) < 1000000000 ? 32 : RVA(blink_aarch64) / 1000000000 % 10 + 48);
-
-HIDDEN(blink_aarch64_size_b0 = blink_aarch64_size % 10 + 48);
-HIDDEN(blink_aarch64_size_b1 = blink_aarch64_size < 10 ? 32 : blink_aarch64_size / 10 % 10 + 48);
-HIDDEN(blink_aarch64_size_b2 = blink_aarch64_size < 100 ? 32 : blink_aarch64_size / 100 % 10 + 48);
-HIDDEN(blink_aarch64_size_b3 = blink_aarch64_size < 1000 ? 32 : blink_aarch64_size / 1000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b4 = blink_aarch64_size < 10000 ? 32 : blink_aarch64_size / 10000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b5 = blink_aarch64_size < 100000 ? 32 : blink_aarch64_size / 100000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b6 = blink_aarch64_size < 1000000 ? 32 : blink_aarch64_size / 1000000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b7 = blink_aarch64_size < 10000000 ? 32 : blink_aarch64_size / 10000000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b8 = blink_aarch64_size < 100000000 ? 32 : blink_aarch64_size / 100000000 % 10 + 48);
-HIDDEN(blink_aarch64_size_b9 = blink_aarch64_size < 1000000000 ? 32 : blink_aarch64_size / 1000000000 % 10 + 48);
-
-HIDDEN(blink_darwin_arm64_b0 = RVA(blink_darwin_arm64) % 10 + 48);
-HIDDEN(blink_darwin_arm64_b1 = RVA(blink_darwin_arm64) < 10 ? 32 : RVA(blink_darwin_arm64) / 10 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b2 = RVA(blink_darwin_arm64) < 100 ? 32 : RVA(blink_darwin_arm64) / 100 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b3 = RVA(blink_darwin_arm64) < 1000 ? 32 : RVA(blink_darwin_arm64) / 1000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b4 = RVA(blink_darwin_arm64) < 10000 ? 32 : RVA(blink_darwin_arm64) / 10000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b5 = RVA(blink_darwin_arm64) < 100000 ? 32 : RVA(blink_darwin_arm64) / 100000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b6 = RVA(blink_darwin_arm64) < 1000000 ? 32 : RVA(blink_darwin_arm64) / 1000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b7 = RVA(blink_darwin_arm64) < 10000000 ? 32 : RVA(blink_darwin_arm64) / 10000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b8 = RVA(blink_darwin_arm64) < 100000000 ? 32 : RVA(blink_darwin_arm64) / 100000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_b9 = RVA(blink_darwin_arm64) < 1000000000 ? 32 : RVA(blink_darwin_arm64) / 1000000000 % 10 + 48);
-
-HIDDEN(blink_darwin_arm64_size_b0 = blink_darwin_arm64_size % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b1 = blink_darwin_arm64_size < 10 ? 32 : blink_darwin_arm64_size / 10 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b2 = blink_darwin_arm64_size < 100 ? 32 : blink_darwin_arm64_size / 100 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b3 = blink_darwin_arm64_size < 1000 ? 32 : blink_darwin_arm64_size / 1000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b4 = blink_darwin_arm64_size < 10000 ? 32 : blink_darwin_arm64_size / 10000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b5 = blink_darwin_arm64_size < 100000 ? 32 : blink_darwin_arm64_size / 100000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b6 = blink_darwin_arm64_size < 1000000 ? 32 : blink_darwin_arm64_size / 1000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b7 = blink_darwin_arm64_size < 10000000 ? 32 : blink_darwin_arm64_size / 10000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b8 = blink_darwin_arm64_size < 100000000 ? 32 : blink_darwin_arm64_size / 100000000 % 10 + 48);
-HIDDEN(blink_darwin_arm64_size_b9 = blink_darwin_arm64_size < 1000000000 ? 32 : blink_darwin_arm64_size / 1000000000 % 10 + 48);
-
 #if SupportsMetal()
 HIDDEN(v_ape_realsectors =
-           MIN(0x70000 - IMAGE_BASE_REAL, ROUNDUP(RVA(_ezip), 512)) / 512);
-HIDDEN(v_ape_realbytes = v_ape_realsectors * 512);
-HIDDEN(v_ape_realdwords = v_ape_realsectors * (512 / 4));
-HIDDEN(v_ape_allsectors = ROUNDUP(RVA(_ezip), 512) / 512);
-HIDDEN(v_ape_allbytes = v_ape_allsectors * 512);
-HIDDEN(v_ape_highsectors = MIN(0xffff, v_ape_allsectors - v_ape_realsectors));
+           MIN(0x70000 - IMAGE_BASE_REAL,
+               ROUNDUP(RVA(_edata), 512)) / 512);
+HIDDEN(v_ape_realpages = v_ape_realsectors / (4096 / 512));
+HIDDEN(v_ape_highsectors =
+           (ROUNDUP(RVA(_edata), 512) / 512) - v_ape_realsectors);
 TSSDESCSTUB2(_tss, _tss, _tss_end ? _tss_end - _tss - 1 : 0);
 #endif

@@ -701,7 +651,7 @@ CHURN(ADDR(.bss));
 CHURN(_start);
 CHURN(ape_phdrs);
 #if SupportsMetal()
-CHURN(v_ape_allsectors);
+CHURN(v_ape_realsectors);
 #endif
 #if SupportsXnu()
 CHURN(ape_macho);
@@ -765,7 +715,7 @@ ASSERT(IS2POW(ape_stack_memsz),
       "ape_stack_memsz must be a two power");

 ASSERT(ape_stack_vaddr % ape_stack_memsz == 0,
-       "ape_stack_vaddr must have ape_stack_memsz alignment; try using STATIC_STACK_ADDR(0x700000040000 & -ape_stack_memsz);");
+       "ape_stack_vaddr must have ape_stack_memsz alignment; try using STATIC_STACK_ADDR(0x700000040000 - ape_stack_memsz);");

 ASSERT(ALIGNOF(.tdata) <= TLS_ALIGNMENT && ALIGNOF(.tbss) <= TLS_ALIGNMENT,
       "_Thread_local _Alignof can't exceed TLS_ALIGNMENT");
@@ -96,10 +96,6 @@ o/ape/idata.inc:				\
 		ape/idata.internal.h		\
 		ape/relocations.h

-o/$(MODE)/ape/ape.o:				\
-		ape/blink-aarch64.gz		\
-		ape/blink-darwin-arm64.gz
-
 o/$(MODE)/ape/ape-no-modify-self.o:		\
 		ape/ape.S			\
 		ape/macros.internal.h		\
@@ -111,7 +107,6 @@ o/$(MODE)/ape/ape-no-modify-self.o:		\
 		libc/macho.internal.h		\
 		libc/macros.internal.h		\
 		libc/nexgen32e/uart.internal.h	\
-		libc/calls/metalfile.internal.h	\
 		libc/nexgen32e/vidya.internal.h	\
 		libc/nt/pedef.internal.h	\
 		libc/runtime/e820.internal.h	\
@@ -119,8 +114,6 @@ o/$(MODE)/ape/ape-no-modify-self.o:		\
 		libc/runtime/pc.internal.h	\
 		libc/runtime/symbolic.h		\
 		libc/sysv/consts/prot.h		\
-		ape/blink-aarch64.gz		\
-		ape/blink-darwin-arm64.gz	\
 		o/$(MODE)/ape/ape.elf
 	@$(COMPILE)				\
 		-AOBJECTIFY.S			\
@@ -140,16 +133,13 @@ o/$(MODE)/ape/ape-copy-self.o:			\
 		libc/macho.internal.h		\
 		libc/macros.internal.h		\
 		libc/nexgen32e/uart.internal.h	\
-		libc/calls/metalfile.internal.h	\
 		libc/nexgen32e/vidya.internal.h	\
 		libc/nt/pedef.internal.h	\
 		libc/runtime/e820.internal.h	\
 		libc/runtime/mman.internal.h	\
 		libc/runtime/pc.internal.h	\
 		libc/runtime/symbolic.h		\
-		libc/sysv/consts/prot.h		\
-		ape/blink-aarch64.gz		\
-		ape/blink-darwin-arm64.gz
+		libc/sysv/consts/prot.h
 	@$(COMPILE)				\
 		-AOBJECTIFY.S			\
 		$(OBJECTIFY.S)			\
@@ -1,6 +1,6 @@
 #!/bin/sh

-if [ "$(id -u)" -eq 0 ]; then
+if [ $UID -eq 0 ]; then
  SUDO=
 else
  SUDO=sudo
@@ -97,8 +97,6 @@ if [ x"$(uname -s)" = xLinux ]; then
  echo you may need to edit configs to persist across reboot >&2
  echo '$SUDO sh -c "echo '"'"':APE:M::MZqFpD::/usr/bin/ape:'"'"' >/proc/sys/fs/binfmt_misc/register"' >&2
  $SUDO sh -c "echo ':APE:M::MZqFpD::/usr/bin/ape:' >/proc/sys/fs/binfmt_misc/register" || exit
-  echo '$SUDO sh -c "echo '"'"':APE-jart:M::jartsr::/usr/bin/ape:'"'"' >/proc/sys/fs/binfmt_misc/register"' >&2
-  $SUDO sh -c "echo ':APE-jart:M::jartsr::/usr/bin/ape:' >/proc/sys/fs/binfmt_misc/register" || exit
  echo done >&2

  if [ x"$(cat /proc/sys/fs/binfmt_misc/status)" = xdisabled ]; then
@@ -8,19 +8,17 @@ fi

 {
  echo
-  echo "APE Uninstaller intends to run (in pseudo-shell)"
+  echo "APE Uninstaller intends to run"
  echo
-  echo "    sudo echo -1 into /proc/sys/fs/binfmt_misc/APE*"
-  echo "    sudo rm -f /usr/bin/ape ~/.ape o/tmp/.ape /tmp/.ape"
+  echo "    $SUDO sh -c 'echo -1 >/proc/sys/fs/binfmt_misc/APE'"
+  echo "    $SUDO rm -f /usr/bin/ape ~/.ape o/tmp/.ape /tmp/.ape"
  echo
  echo "You may then use ape/apeinstall.sh to reinstall it"
  echo
 } >&2

 set -ex
-for f in /proc/sys/fs/binfmt_misc/APE*; do
-  if [ -f $f ]; then
-    $SUDO sh -c "echo -1 >$f" || exit
-  fi
-done
+if [ -f /proc/sys/fs/binfmt_misc/APE ]; then
+  $SUDO sh -c 'echo -1 >/proc/sys/fs/binfmt_misc/APE' || exit
+fi
 $SUDO rm -f /usr/bin/ape ~/.ape o/tmp/.ape o/tmp/ape /tmp/.ape /tmp/ape || exit
@@ -1,34 +0,0 @@
-#ifndef COSMOPOLITAN_APE_SECTIONS_INTERNAL_H_
-#define COSMOPOLITAN_APE_SECTIONS_INTERNAL_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-extern unsigned char _base[];
-extern unsigned char _ehead[];
-extern unsigned char _etext[];
-extern unsigned char _edata[];
-extern unsigned char _ezip[];
-extern unsigned char _end[];
-extern unsigned char _ereal[];
-extern unsigned char _tdata_start[];
-extern unsigned char _tdata_end[];
-extern unsigned char _tbss_start[];
-extern unsigned char _tbss_end[];
-extern unsigned char __privileged_start[];
-extern unsigned char __privileged_addr[];
-extern unsigned char __privileged_size[];
-extern unsigned char __privileged_end[];
-extern unsigned char __test_start[];
-extern unsigned char __ro[];
-extern unsigned char *__relo_start[];
-extern unsigned char *__relo_end[];
-extern uint8_t __zip_start[];
-extern uint8_t __zip_end[];
-extern uint8_t __data_start[];
-extern uint8_t __data_end[];
-extern uint8_t __bss_start[];
-extern uint8_t __bss_end[];
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_APE_SECTIONS_INTERNAL_H_ */
@@ -29,7 +29,7 @@ endif
 #
 ifeq ($(MODE),fastbuild)
 CONFIG_CCFLAGS += $(BACKTRACES) $(FTRACE) -O
-CONFIG_CPPFLAGS += -DSYSDEBUG -DDWARFLESS
+CONFIG_CPPFLAGS += -DSYSDEBUG
 CONFIG_OFLAGS += -g0
 CONFIG_LDFLAGS += -S
 TARGET_ARCH ?= -msse3
@@ -125,22 +125,6 @@ TARGET_ARCH ?= -msse3
 OVERRIDE_CCFLAGS += -fno-pie
 endif

-# System Five Mode
-#
-#   - `make MODE=sysv`
-#   - Optimized
-#   - Backtraces
-#   - Debuggable
-#   - Syscall tracing
-#   - Function tracing
-#   - No Windows bloat!
-#
-ifeq ($(MODE), sysv)
-CONFIG_CCFLAGS += $(BACKTRACES) $(FTRACE) -O2
-CONFIG_CPPFLAGS += -DSYSDEBUG -DSUPPORT_VECTOR=121
-TARGET_ARCH ?= -msse3
-endif
-
 # Tiny Mode
 #
 #   - `make MODE=tiny`
@@ -167,8 +151,7 @@ CONFIG_CCFLAGS +=			\
 	-fschedule-insns2		\
 	-fomit-frame-pointer		\
 	-momit-leaf-frame-pointer	\
-	-foptimize-sibling-calls	\
-	-DDWARFLESS
+	-foptimize-sibling-calls
 CONFIG_OFLAGS +=			\
 	-g0
 CONFIG_LDFLAGS +=			\
@@ -198,8 +181,7 @@ CONFIG_CPPFLAGS +=			\
 	-DTINY				\
 	-DNDEBUG			\
 	-DTRUSTWORTHY			\
-	-DSUPPORT_VECTOR=1		\
-	-DDWARFLESS
+	-DSUPPORT_VECTOR=1
 DEFAULT_COPTS +=			\
 	-mred-zone
 CONFIG_OFLAGS +=			\
@@ -235,8 +217,7 @@ CONFIG_CPPFLAGS +=		\
 	-DTINY			\
 	-DNDEBUG		\
 	-DTRUSTWORTHY		\
-	-DSUPPORT_VECTOR=113	\
-	-DDWARFLESS
+	-DSUPPORT_VECTOR=113
 DEFAULT_COPTS +=		\
 	-mred-zone
 CONFIG_OFLAGS +=		\
@@ -271,8 +252,7 @@ CONFIG_CPPFLAGS +=		\
 	-DTINY			\
 	-DNDEBUG		\
 	-DTRUSTWORTHY		\
-	-DSUPPORT_VECTOR=121	\
-	-DDWARFLESS
+	-DSUPPORT_VECTOR=121
 DEFAULT_COPTS +=		\
 	-mred-zone
 CONFIG_CCFLAGS +=		\
@@ -307,8 +287,7 @@ CONFIG_CPPFLAGS +=		\
 	-DTINY			\
 	-DNDEBUG		\
 	-DTRUSTWORTHY		\
-	-DSUPPORT_VECTOR=251	\
-	-DDWARFLESS
+	-DSUPPORT_VECTOR=251
 CONFIG_CCFLAGS +=		\
 	-Os			\
 	-fno-align-functions	\
@@ -45,6 +45,7 @@
 LC_ALL = C
 SOURCE_DATE_EPOCH = 0

+TAGS ?= /usr/bin/ctags  # emacs source builds or something breaks it
 ARFLAGS = rcsD
 ZFLAGS ?=
 XARGS ?= xargs -P4 -rs8000
@@ -43,9 +43,6 @@
 #     '(progn
 #        (add-hook 'c-mode-common-hook 'jart-c-mode-common-hook)))

-TAGS="$1"
-shift
-
 # ctags doesn't understand atomics, e.g.
 #   extern char **environ;
 set -- --regex-c='/_Atomic(\([^)]*\))/\1/b' "$@"
@@ -66,7 +63,7 @@ set -- --regex-c='/^extern [^(]*(\*const \([^)]*\))(/\1/b' "$@"
 #   struct WorstSoftwareEver;
 set -- --regex-c='/^struct.*;$/uehocruehcroue/b' "$@"

-exec $TAGS                                                        \
+exec ${TAGS:-ctags}                                               \
     -e                                                           \
     --langmap=c:.c.h                                             \
     --exclude=libc/nt/struct/imagefileheader.internal.h          \
@@ -7,12 +7,12 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/dce.h"
 #include "libc/intrin/bits.h"
-#include "libc/intrin/kprintf.h"
+#include "libc/dce.h"
 #include "libc/log/log.h"
 #include "libc/mem/mem.h"
 #include "libc/runtime/runtime.h"
+#include "libc/stdio/stdio.h"
 #include "libc/str/str.h"

 /**
@@ -59,15 +59,9 @@

 int main(int argc, char *argv[]) {
  if (!IsAsan()) {
-    kprintf("this example is intended for MODE=asan or MODE=dbg\n");
+    printf("this example is intended for MODE=asan or MODE=dbg\n");
    exit(1);
  }
-
-  kprintf("----------------\n");
-  kprintf(" THIS IS A TEST \n");
-  kprintf("SIMULATING CRASH\n");
-  kprintf("----------------\n");
-
  char *buffer;
  ShowCrashReports(); /* not needed but yoinks appropriate symbols */
  buffer = malloc(13);
@@ -20,22 +20,22 @@ int main(int argc, char *argv[]) {
  volatile unsigned long x;
  struct timespec now, start, next, interval;
  printf("hammering the cpu...\n");
-  next = start = timespec_mono();
-  interval = timespec_frommillis(500);
-  next = timespec_add(next, interval);
+  next = start = _timespec_mono();
+  interval = _timespec_frommillis(500);
+  next = _timespec_add(next, interval);
  for (;;) {
    for (i = 0;; ++i) {
      x *= 7;
      if (!(i % 256)) {
-        now = timespec_mono();
-        if (timespec_cmp(now, next) >= 0) {
+        now = _timespec_mono();
+        if (_timespec_gte(now, next)) {
          break;
        }
      }
    }
-    next = timespec_add(next, interval);
+    next = _timespec_add(next, interval);
    printf("consumed %10g seconds monotonic time and %10g seconds cpu time\n",
-           timespec_tonanos(timespec_sub(now, start)) / 1000000000.,
+           _timespec_tonanos(_timespec_sub(now, start)) / 1000000000.,
           (double)clock() / CLOCKS_PER_SEC);
  }
 }
@@ -28,7 +28,7 @@ void show(int clock) {
  }
  shown[n++] = clock;
  if (clock_getres(clock, &ts) != -1) {
-    kprintf("%s %'ld ns\n", DescribeClockName(clock), timespec_tonanos(ts));
+    kprintf("%s %'ld ns\n", DescribeClockName(clock), _timespec_tonanos(ts));
  } else {
    kprintf("%s %s\n", DescribeClockName(clock), _strerrno(errno));
  }
@@ -38,12 +38,10 @@ int main(int argc, char *argv[]) {
  show(CLOCK_REALTIME);
  show(CLOCK_REALTIME_FAST);
  show(CLOCK_REALTIME_PRECISE);
-  show(CLOCK_REALTIME_COARSE);
  show(CLOCK_MONOTONIC);
  show(CLOCK_MONOTONIC_RAW);
  show(CLOCK_MONOTONIC_FAST);
  show(CLOCK_MONOTONIC_PRECISE);
-  show(CLOCK_MONOTONIC_COARSE);
  show(CLOCK_PROCESS_CPUTIME_ID);
  show(CLOCK_THREAD_CPUTIME_ID);
  show(CLOCK_PROF);
@@ -7,7 +7,6 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/intrin/kprintf.h"
 #include "libc/log/log.h"
 #include "libc/runtime/symbols.internal.h"

@@ -25,12 +24,6 @@
 */

 noubsan int main(int argc, char *argv[]) {
-
-  kprintf("----------------\n");
-  kprintf(" THIS IS A TEST \n");
-  kprintf("SIMULATING CRASH\n");
-  kprintf("----------------\n");
-
  volatile int64_t x;
  ShowCrashReports();
  return 1 / (x = 0);
@@ -52,10 +52,12 @@
 #include "third_party/mbedtls/pk.h"
 #include "third_party/mbedtls/ssl.h"
 #include "third_party/mbedtls/ssl_ticket.h"
-#include "tool/curl/cmd.h"

 /**
 * @fileoverview Downloads HTTP URL to stdout.
+ *
+ *     make -j8 o//examples/curl.com
+ *     o//examples/curl.com http://justine.lol/ape.html
 */

 #define HasHeader(H)    (!!msg.headers[H].a)
@@ -115,11 +117,11 @@ static int TlsRecv(void *c, unsigned char *p, size_t n, uint32_t o) {
 }

 static wontreturn void PrintUsage(FILE *f, int rc) {
-  fprintf(f, "usage: %s [-iksvV] URL\n", program_invocation_name);
+  fprintf(f, "usage: %s [-ksvV] URL\n", program_invocation_name);
  exit(rc);
 }

-int _curl(int argc, char *argv[]) {
+int main(int argc, char *argv[]) {
  if (!NoDebug()) ShowCrashReports();

  /*
@@ -130,13 +132,11 @@ int _curl(int argc, char *argv[]) {
    size_t n;
    char **p;
  } headers = {0};
-  int method = 0;
+  int method = kHttpGet;
  bool authmode = MBEDTLS_SSL_VERIFY_REQUIRED;
-  bool includeheaders = false;
-  const char *postdata = NULL;
  const char *agent = "hurl/1.o (https://github.com/jart/cosmopolitan)";
  __log_level = kLogWarn;
-  while ((opt = getopt(argc, argv, "qiksvVIX:H:A:d:")) != -1) {
+  while ((opt = getopt(argc, argv, "qksvVIX:H:A:")) != -1) {
    switch (opt) {
      case 's':
      case 'q':
@@ -144,9 +144,6 @@ int _curl(int argc, char *argv[]) {
      case 'v':
        ++__log_level;
        break;
-      case 'i':
-        includeheaders = true;
-        break;
      case 'I':
        method = kHttpHead;
        break;
@@ -157,9 +154,6 @@ int _curl(int argc, char *argv[]) {
        headers.p = realloc(headers.p, ++headers.n * sizeof(*headers.p));
        headers.p[headers.n - 1] = optarg;
        break;
-      case 'd':
-        postdata = optarg;
-        break;
      case 'X':
        CHECK((method = GetHttpMethod(optarg, strlen(optarg))));
        break;
@@ -230,29 +224,17 @@ int _curl(int argc, char *argv[]) {
  /*
   * Create HTTP message.
   */
-  if (!method) method = postdata ? kHttpPost : kHttpGet;
-
  char *request = 0;
  appendf(&request,
          "%s %s HTTP/1.1\r\n"
+          "Host: %s:%s\r\n"
          "Connection: close\r\n"
          "User-Agent: %s\r\n",
-          kHttpMethod[method], _gc(EncodeUrl(&url, 0)), agent);
-
-  bool senthost = false, sentcontenttype = false, sentcontentlength = false;
+          kHttpMethod[method], _gc(EncodeUrl(&url, 0)), host, port, agent);
  for (int i = 0; i < headers.n; ++i) {
    appendf(&request, "%s\r\n", headers.p[i]);
-    if (!strncasecmp("Host:", headers.p[i], 5)) senthost = true;
-    else if (!strncasecmp("Content-Type:", headers.p[i], 13)) sentcontenttype = true;
-    else if (!strncasecmp("Content-Length:", headers.p[i], 15)) sentcontentlength = true;
-  }
-  if (!senthost) appendf(&request, "Host: %s:%s\r\n", host, port);
-  if (postdata) {
-    if (!sentcontenttype) appends(&request, "Content-Type: application/x-www-form-urlencoded\r\n");
-    if (!sentcontentlength) appendf(&request, "Content-Length: %d\r\n", strlen(postdata));
  }
  appendf(&request, "\r\n");
-  if (postdata) appends(&request, postdata);

  /*
   * Setup crypto.
@@ -280,7 +262,7 @@ int _curl(int argc, char *argv[]) {
   * Perform DNS lookup.
   */
  struct addrinfo *addr;
-  struct addrinfo hints = {.ai_family = AF_UNSPEC,
+  struct addrinfo hints = {.ai_family = AF_INET,
                           .ai_socktype = SOCK_STREAM,
                           .ai_protocol = IPPROTO_TCP,
                           .ai_flags = AI_NUMERICSERV};
@@ -362,10 +344,10 @@ int _curl(int argc, char *argv[]) {
            i -= hdrlen;
            break;
          }
-          if (method == kHttpHead || includeheaders) {
+          if (method == kHttpHead) {
            Write(p, hdrlen);
-          }
-          if (method == kHttpHead || msg.status == 204 || msg.status == 304) {
+            goto Finished;
+          } else if (msg.status == 204 || msg.status == 304) {
            goto Finished;
          }
          if (HasHeader(kHttpTransferEncoding) &&
@@ -49,12 +49,12 @@ EXAMPLES_DIRECTDEPS =								\
 	LIBC_LOG								\
 	LIBC_MEM								\
 	LIBC_NEXGEN32E								\
-	LIBC_NT_ADVAPI32							\
 	LIBC_NT_IPHLPAPI							\
 	LIBC_NT_KERNEL32							\
 	LIBC_NT_NTDLL								\
 	LIBC_NT_USER32								\
 	LIBC_NT_WS2_32								\
+	LIBC_NT_ADVAPI32							\
 	LIBC_RUNTIME								\
 	LIBC_SOCK								\
 	LIBC_STDIO								\
@@ -71,7 +71,6 @@ EXAMPLES_DIRECTDEPS =								\
 	LIBC_ZIPOS								\
 	NET_HTTP								\
 	NET_HTTPS								\
-	THIRD_PARTY_AWK								\
 	THIRD_PARTY_COMPILER_RT							\
 	THIRD_PARTY_DLMALLOC							\
 	THIRD_PARTY_DOUBLECONVERSION						\
@@ -80,15 +79,12 @@ EXAMPLES_DIRECTDEPS =								\
 	THIRD_PARTY_LIBCXX							\
 	THIRD_PARTY_LINENOISE							\
 	THIRD_PARTY_LUA								\
-	THIRD_PARTY_HIREDIS							\
 	THIRD_PARTY_MBEDTLS							\
 	THIRD_PARTY_MUSL							\
 	THIRD_PARTY_NSYNC							\
 	THIRD_PARTY_NSYNC_MEM							\
 	THIRD_PARTY_QUICKJS							\
-	THIRD_PARTY_SED								\
 	THIRD_PARTY_STB								\
-	THIRD_PARTY_TR								\
 	THIRD_PARTY_XED								\
 	THIRD_PARTY_ZLIB							\
 	TOOL_BUILD_LIB								\
@@ -147,25 +143,6 @@ o/$(MODE)/examples/nesemu1.com.dbg:						\
 		$(EXAMPLES_BOOTLOADER)
 	@$(APELINK)

-# # force symtab.com to be a zip file, by pulling a zip asset into linkage
-# # we wouldn't need to do this if we depended on functions like localtime
-# o/$(MODE)/examples/symtab.com.dbg:						\
-# 		$(EXAMPLES_DEPS)						\
-# 		o/$(MODE)/examples/symtab.o					\
-# 		o/$(MODE)/examples/symtab.c.zip.o				\
-# 		o/$(MODE)/examples/examples.pkg					\
-# 		$(EXAMPLES_BOOTLOADER)
-# 	@$(APELINK)
-
-# modify .com so it can read the symbol table without needing the .com.dbg file
-o/$(MODE)/examples/symtab.com:							\
-		o/$(MODE)/examples/symtab.com.dbg				\
-		o/$(MODE)/third_party/zip/zip.com				\
-		o/$(MODE)/tool/build/symtab.com
-	@$(MAKE_OBJCOPY)
-	@$(MAKE_SYMTAB_CREATE)
-	@$(MAKE_SYMTAB_ZIP)
-
 o/$(MODE)/examples/picol.o: private				\
 		OVERRIDE_CPPFLAGS +=				\
 			-DSTACK_FRAME_UNLIMITED
@@ -1,21 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/calls/calls.h"
-#include "libc/stdio/stdio.h"
-
-int main(int argc, char *argv[]) {
-  char buf[256];
-  if (!getdomainname(buf, sizeof(buf))) {
-    printf("%s\n", buf);
-    return 0;
-  } else {
-    return 1;
-  }
-}
@@ -7,7 +7,6 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "ape/sections.internal.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/struct/sigaction.h"
 #include "libc/errno.h"
@@ -1,55 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/runtime/runtime.h"
-#include "libc/fmt/conv.h"
-#include "libc/fmt/fmt.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "third_party/hiredis/hiredis.h"
-
-/**
- * @fileoverview Demo of using hiredis to connect to a Redis server
- */
-
-int main(int argc, char *argv[]) {
-  if (argc < 3 || argc > 5) {
-    fprintf(stderr, "Usage: %s HOST PORT [KEY] [VALUE]\n", argv[0]);
-    exit(1);
-  }
-
-  bool setValue = (argc == 5), getValue = (argc == 4);
-
-  redisContext *c = redisConnect(argv[1], atoi(argv[2]));
-  if (c == NULL || c->err) {
-    if (c) {
-      fprintf(stderr, "Connection error: %s\n", c->errstr);
-      redisFree(c);
-    } else {
-      fputs("Failed to allocate redis context\n", stderr);
-    }
-    exit(1);
-  }
-
-  redisReply *reply;
-  if (!setValue && !getValue) {
-    reply = redisCommand(c, "PING");
-    printf("PING: %s\n", reply->str);
-  } else if (setValue) {
-    reply = redisCommand(c, "SET %s %s", argv[3], argv[4]);
-    printf("SET: %s\n", reply->str);
-  } else {
-    reply = redisCommand(c, "GET %s", argv[3]);
-    printf("GET: %s\n", reply->str);
-  }
-
-  freeReplyObject(reply);
-  redisFree(c);
-  return 0;
-}
@@ -1,43 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/assert.h"
-#include "libc/calls/struct/timespec.h"
-#include "libc/stdio/stdio.h"
-#include "libc/sysv/consts/clock.h"
-
-/**
- * @fileoverview shows how accurate clock_nanosleep() is
- */
-
-int main(int argc, char *argv[]) {
-  long i, ns;
-  struct timespec x, y, w;
-  timespec_sleep(timespec_fromnanos(0));  // warmup
-
-  printf("\nrelative sleep\n");
-  for (i = 0; i < 28; ++i) {
-    ns = 1l << i;
-    x = timespec_real();
-    timespec_sleep(timespec_fromnanos(ns));
-    y = timespec_real();
-    printf("%,11ld ns sleep took %,ld ns\n", ns,
-           timespec_tonanos(timespec_sub(y, x)));
-  }
-
-  printf("\nabsolute sleep\n");
-  for (i = 0; i < 28; ++i) {
-    ns = 1l << i;
-    x = timespec_real();
-    timespec_sleep_until(timespec_add(x, timespec_fromnanos(ns)));
-    y = timespec_real();
-    printf("%,11ld ns sleep took %,ld ns\n", ns,
-           timespec_tonanos(timespec_sub(y, x)));
-  }
-}
@@ -47,7 +47,7 @@
 #include "third_party/libcxx/vector"
 #include "tool/viz/lib/knobs.h"

-STATIC_YOINK("zipos");
+STATIC_YOINK("zip_uri_support");

 #define USAGE \
  " [ROM] [FMV]\n\
@@ -7,7 +7,6 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "ape/sections.internal.h"
 #include "libc/dce.h"
 #include "libc/runtime/runtime.h"
 #include "libc/stdio/stdio.h"
@@ -1,127 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/assert.h"
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/timeval.h"
-#include "libc/errno.h"
-#include "libc/fmt/conv.h"
-#include "libc/fmt/fmt.h"
-#include "libc/mem/alloca.h"
-#include "libc/runtime/runtime.h"
-#include "libc/sock/sock.h"
-#include "libc/sock/struct/sockaddr.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/af.h"
-#include "libc/sysv/consts/ipproto.h"
-#include "libc/sysv/consts/so.h"
-#include "libc/sysv/consts/sock.h"
-#include "libc/sysv/consts/sol.h"
-#include "net/http/ip.h"
-
-/**
- * @fileoverview fast local network port scanner, e.g.
- *
- *     make -j8 o//examples/portscan.com
- *     o//examples/portscan.com 10.10.10.0/24 22
- */
-
-const char *FormatIp(char buf[16], uint32_t ip) {
-  snprintf(buf, 16, "%hhu.%hhu.%hhu.%hhu", ip >> 24, ip >> 16, ip >> 8, ip);
-  return buf;
-}
-
-#define FormatIp(x) FormatIp(alloca(16), x)
-
-int main(int argc, char *argv[]) {
-  int port;
-  struct Cidr in;
-  uint32_t netmask;
-  const char *status;
-  struct timeval timeout;
-  uint32_t network_address;
-  uint32_t last_host_address;
-  uint32_t first_host_address;
-
-  if (argc != 3) {
-  PrintUsage:
-    fprintf(stderr,
-            "usage:   %s IP/CIDR PORT\n"
-            "example: %s 192.168.0.0/24 22\n",
-            argv[0], argv[0]);
-    return 1;
-  }
-
-  in = ParseCidr(argv[1], -1);
-  if (in.addr == -1) {
-    fprintf(stderr, "error: bad ip/cidr\n");
-    goto PrintUsage;
-  }
-
-  port = atoi(argv[2]);
-  if (!(1 <= port && port <= 65535)) {
-    fprintf(stderr, "error: bad port\n");
-    goto PrintUsage;
-  }
-
-  if (in.cidr > 30) {
-    fprintf(stderr, "error: maximum supported cidr is 30\n");
-    goto PrintUsage;
-  }
-
-  if (in.cidr < 22) {
-    fprintf(stderr, "error: minimum cidr support right now is 22\n");
-    goto PrintUsage;
-  }
-
-  netmask = -1u << (32 - in.cidr);
-  network_address = in.addr & netmask;
-  first_host_address = network_address + 1;
-  last_host_address = (network_address | ~netmask) - 1;
-
-  assert(last_host_address > first_host_address);
-  assert(last_host_address - first_host_address < 1024);
-
-  fprintf(stderr, "scanning %s through %s\n", FormatIp(first_host_address),
-          FormatIp(last_host_address));
-
-  timeout = timeval_frommillis(100);
-  for (int64_t ip = first_host_address; ip <= last_host_address; ++ip) {
-    if (!fork()) {
-      socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
-      setsockopt(3, SOL_SOCKET, SO_RCVTIMEO, &timeout, sizeof(timeout));
-      setsockopt(3, SOL_SOCKET, SO_SNDTIMEO, &timeout, sizeof(timeout));
-      if (!connect(3,
-                   (struct sockaddr *)&(struct sockaddr_in){
-                       .sin_family = AF_INET,
-                       .sin_addr.s_addr = htonl(ip),
-                       .sin_port = htons(port),
-                   },
-                   sizeof(struct sockaddr_in))) {
-        status = "open";
-      } else if (errno == ECONNREFUSED) {
-        status = "closed";
-      } else if (errno != EINPROGRESS) {
-        status = _strerrno(errno);
-      } else {
-        status = 0;
-      }
-      if (status) {
-        printf("%-15s %s\n", FormatIp(ip), status);
-      }
-      _Exit(0);
-    }
-  }
-  for (;;) {
-    if (wait(0) == -1 && errno == ECHILD) {
-      break;
-    }
-  }
-}
@@ -1,39 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/calls/calls.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/reboot.h"
-
-int main(int argc, char *argv[]) {
-  char line[8] = {0};
-  if (argc > 1 && !strcmp(argv[1], "-y")) {
-    line[0] = 'y';
-  } else {
-    printf("reboot your computer? yes or no [no] ");
-    fflush(stdout);
-    fgets(line, sizeof(line), stdin);
-  }
-  if (line[0] == 'y' || line[0] == 'Y') {
-    if (reboot(RB_AUTOBOOT)) {
-      printf("system is rebooting...\n");
-      exit(0);
-    } else {
-      perror("reboot");
-      exit(1);
-    }
-  } else if (line[0] == 'n' || line[0] == 'N') {
-    exit(0);
-  } else {
-    printf("error: unrecognized response\n");
-    exit(2);
-  }
-}
@@ -1,39 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/calls/calls.h"
-#include "libc/runtime/runtime.h"
-#include "libc/stdio/stdio.h"
-#include "libc/str/str.h"
-#include "libc/sysv/consts/reboot.h"
-
-int main(int argc, char *argv[]) {
-  char line[8] = {0};
-  if (argc > 1 && !strcmp(argv[1], "-y")) {
-    line[0] = 'y';
-  } else {
-    printf("shutdown your computer? yes or no [no] ");
-    fflush(stdout);
-    fgets(line, sizeof(line), stdin);
-  }
-  if (line[0] == 'y' || line[0] == 'Y') {
-    if (reboot(RB_POWER_OFF)) {
-      printf("system is shutting down...\n");
-      exit(0);
-    } else {
-      perror("reboot");
-      exit(1);
-    }
-  } else if (line[0] == 'n' || line[0] == 'N') {
-    exit(0);
-  } else {
-    printf("error: unrecognized response\n");
-    exit(2);
-  }
-}
@@ -27,13 +27,13 @@ dontinline void ShowIt(const char *path) {
         "optimal transfer block size");
  sizefmt(ibuf, sf.f_frsize, 1024);
  printf("f_frsize  = %,zu (%sb %s)\n", sf.f_frsize, ibuf, "fragment size");
-  sizefmt(ibuf, sf.f_blocks * sf.f_frsize, 1024);
+  sizefmt(ibuf, sf.f_blocks * sf.f_bsize, 1024);
  printf("f_blocks  = %,zu (%sb %s)\n", sf.f_blocks, ibuf,
         "total data blocks in filesystem");
-  sizefmt(ibuf, sf.f_bfree * sf.f_frsize, 1024);
+  sizefmt(ibuf, sf.f_bfree * sf.f_bsize, 1024);
  printf("f_bfree   = %,zu (%sb %s)\n", sf.f_bfree, ibuf,
         "free blocks in filesystem");
-  sizefmt(ibuf, sf.f_bavail * sf.f_frsize, 1024);
+  sizefmt(ibuf, sf.f_bavail * sf.f_bsize, 1024);
  printf("f_bavail  = %,zu (%sb %s)\n", sf.f_bavail, ibuf,
         "free blocks available to use");
  printf("f_files   = %,zu (%s)\n", sf.f_files,
@@ -1,42 +0,0 @@
-#if 0
-/*─────────────────────────────────────────────────────────────────╗
-│ To the extent possible under law, Justine Tunney has waived      │
-│ all copyright and related or neighboring rights to this file,    │
-│ as it is written in the following disclaimers:                   │
-│   • http://unlicense.org/                                        │
-│   • http://creativecommons.org/publicdomain/zero/1.0/            │
-╚─────────────────────────────────────────────────────────────────*/
-#endif
-#include "libc/intrin/kprintf.h"
-#include "libc/log/log.h"
-
-/**
- * @fileoverview example of how to embed symbol table in .com file
- *
- *     # build our binary
- *     make -j16 o//examples/symtab.com
- *
- *     # move binary somewhere else
- *     # so it can't find the .com.dbg binary
- *     cp o//examples/symtab.com /tmp
- *
- *     # run program
- *     # notice that it has a symbolic backtrace
- *     /tmp/symtab.com
- *
- * @see examples/examples.mk
- */
-
-int main(int argc, char *argv[]) {
-
-  // this links all the debugging and zip functionality
-  ShowCrashReports();
-
-  kprintf("----------------\n");
-  kprintf(" THIS IS A TEST \n");
-  kprintf("SIMULATING CRASH\n");
-  kprintf("----------------\n");
-
-  volatile int64_t x;
-  return 1 / (x = 0);
-}
@@ -46,31 +46,31 @@ int main(int argc, char *argv[]) {
         1. / 65536 * si.loads[1],    //
         1. / 65536 * si.loads[2]);   //

-  sizefmt(ibuf, si.totalram * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "totalram", si.totalram, ibuf);
+  sizefmt(ibuf, si.totalram, 1024);
+  printf("%-16s %s\n", "totalram", ibuf);

-  sizefmt(ibuf, si.freeram * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "freeram", si.freeram, ibuf);
+  sizefmt(ibuf, si.freeram, 1024);
+  printf("%-16s %s\n", "freeram", ibuf);

-  sizefmt(ibuf, si.sharedram * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "sharedram", si.sharedram, ibuf);
+  sizefmt(ibuf, si.sharedram, 1024);
+  printf("%-16s %s\n", "sharedram", ibuf);

-  sizefmt(ibuf, si.bufferram * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "bufferram", si.bufferram, ibuf);
+  sizefmt(ibuf, si.bufferram, 1024);
+  printf("%-16s %s\n", "bufferram", ibuf);

-  sizefmt(ibuf, si.totalswap * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "totalswap", si.totalswap, ibuf);
+  sizefmt(ibuf, si.totalswap, 1024);
+  printf("%-16s %s\n", "totalswap", ibuf);

-  sizefmt(ibuf, si.freeswap * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "freeswap", si.freeswap, ibuf);
+  sizefmt(ibuf, si.freeswap, 1024);
+  printf("%-16s %s\n", "freeswap", ibuf);

  printf("%-16s %lu\n", "processes", si.procs);

-  sizefmt(ibuf, si.totalhigh * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "totalhigh", si.totalhigh, ibuf);
+  sizefmt(ibuf, si.totalhigh, 1024);
+  printf("%-16s %s\n", "totalhigh", ibuf);

-  sizefmt(ibuf, si.freehigh * si.mem_unit, 1024);
-  printf("%-16s %ld (%s)\n", "freehigh", si.freehigh, ibuf);
+  sizefmt(ibuf, si.freehigh, 1024);
+  printf("%-16s %s\n", "freehigh", ibuf);

  sizefmt(ibuf, si.mem_unit, 1024);
  printf("%-16s %s\n", "mem_unit", ibuf);
@@ -7,20 +7,13 @@
 │   • http://creativecommons.org/publicdomain/zero/1.0/            │
 ╚─────────────────────────────────────────────────────────────────*/
 #endif
-#include "libc/runtime/runtime.h"
+#include "libc/dce.h"
 #include "libc/stdio/stdio.h"

-/**
- * @fileoverview Cosmopolitan Command Interpreter Demo
- * Yes this works on Windows.
- */
-
-STATIC_YOINK("_tr");
-STATIC_YOINK("_sed");
-
 int main(int argc, char *argv[]) {
-  system("x=world\n"
-         "echo hello $x |\n"
-         "  tr a-z A-Z |\n"
-         "  sed 's/\\(.\\)/\\1 /g'");
+  if (IsWindows()) {
+    system("notepad");
+  } else {
+    system("ls | tr a-z A-Z");
+  }
 }
@@ -24,16 +24,10 @@

 STATIC_YOINK("vga_console");
 STATIC_YOINK("_idt");
-STATIC_YOINK("EfiMain");

 int main(int argc, char *argv[]) {
-  int i;
  volatile int x = 1;
  volatile int y = 2;
-  printf("argc = %d\n", argc);
-  for (i = 0; i < argc; ++i) {
-    printf("argv[%d] = \"%s\"\n", i, argv[i]);
-  }
  printf("\e[92;44mHello World!\e[0m %d\n", 1 / (x + y - 3));
  for (;;);
 }
@@ -1,21 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_AR_H_
-#define COSMOPOLITAN_LIBC_AR_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-#define ARMAG  "!<arch>\n"
-#define SARMAG 8
-#define ARFMAG "`\n"
-
-struct ar_hdr {
-  char ar_name[16];
-  char ar_date[12];
-  char ar_uid[6], ar_gid[6];
-  char ar_mode[8];
-  char ar_size[10];
-  char ar_fmag[2];
-};
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_LIBC_AR_H_ */
@@ -4,7 +4,7 @@
 COSMOPOLITAN_C_START_

 extern bool __assert_disable;
-void __assert_fail(const char *, const char *, int) _Hide relegated;
+void __assert_fail(const char *, const char *, int) hidden relegated;

 #ifdef NDEBUG
 #define assert(x) ((void)0)
@@ -17,7 +17,7 @@ void __assert_fail(const char *, const char *, int) _Hide relegated;
 #endif

 #ifdef __GNUC__
-#if !defined(TINY) && !defined(MODE_DBG)
+#ifndef TINY
 /**
 * Specifies expression can't possibly be false.
 *
@@ -16,7 +16,6 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "ape/sections.internal.h"
 #include "libc/assert.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/sig.internal.h"
@@ -108,6 +107,7 @@ static bool __sig_deliver(bool restartable, int sig, int si_code,
  STRACE("delivering %G", sig);

  // enter the signal
+  __sig_lock();
  rva = __sighandrvas[sig];
  flags = __sighandflags[sig];
  if ((~flags & SA_NODEFER) || (flags & SA_RESETHAND)) {
@@ -118,6 +118,7 @@ static bool __sig_deliver(bool restartable, int sig, int si_code,
    // signal handler. in that case you must use SA_NODEFER.
    __sighandrvas[sig] = (int32_t)(intptr_t)SIG_DFL;
  }
+  __sig_unlock();

  // setup the somewhat expensive information args
  // only if they're requested by the user in sigaction()
@@ -139,9 +140,11 @@ static bool __sig_deliver(bool restartable, int sig, int si_code,
    // since sigaction() is @asyncsignalsafe we only restore it if the
    // user didn't change it during the signal handler. we also don't
    // need to do anything if this was a oneshot signal or nodefer.
+    __sig_lock();
    if (__sighandrvas[sig] == (int32_t)(intptr_t)SIG_DFL) {
      __sighandrvas[sig] = rva;
    }
+    __sig_unlock();
  }

  if (!restartable) {
@@ -204,7 +207,6 @@ textwindows int __sig_raise(int sig, int si_code) {
  if (1 <= sig && sig <= 64) {
    if (!__sig_is_masked(sig)) {
      ++__sig_count;
-      // TODO(jart): ucontext_t support
      __sig_handle(false, sig, si_code, 0);
      return 0;
    } else {
@@ -225,12 +227,12 @@ textwindows int __sig_add(int tid, int sig, int si_code) {
  int rc;
  struct Signal *mem;
  if (1 <= sig && sig <= 64) {
+    __sig_lock();
    if (__sighandrvas[sig] == (unsigned)(intptr_t)SIG_IGN) {
      STRACE("ignoring %G", sig);
      rc = 0;
    } else {
      STRACE("enqueuing %G", sig);
-      __sig_lock();
      ++__sig_count;
      if ((mem = __sig_alloc())) {
        mem->tid = tid;
@@ -242,8 +244,8 @@ textwindows int __sig_add(int tid, int sig, int si_code) {
      } else {
        rc = enomem();
      }
-      __sig_unlock();
    }
+    __sig_unlock();
  } else {
    rc = einval();
  }
@@ -16,9 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/assert.h"
 #include "libc/calls/sig.internal.h"
-#include "libc/calls/struct/sigset.h"
 #include "libc/sysv/consts/sig.h"
 #include "libc/sysv/errfuns.h"
 #include "libc/thread/tls.h"
@@ -47,10 +45,7 @@ textwindows int __sig_mask(int how, const sigset_t *neu, sigset_t *old) {
      } else {
        x = y;
      }
-      x &= ~(0
-#define M(x) | GetSigBit(x)
-#include "libc/intrin/sigisprecious.inc"
-      );
+      x &= ~(GetSigBit(SIGKILL) | GetSigBit(SIGSTOP) | GetSigBit(SIGABRT));
      *mask = x;
    }
    return 0;
@@ -21,7 +21,7 @@
 /**
 * Adds two nanosecond timestamps.
 */
-struct timespec timespec_add(struct timespec x, struct timespec y) {
+struct timespec _timespec_add(struct timespec x, struct timespec y) {
  x.tv_sec += y.tv_sec;
  x.tv_nsec += y.tv_nsec;
  if (x.tv_nsec >= 1000000000) {
@@ -20,10 +20,8 @@

 /**
 * Compares nanosecond timestamps.
- *
- * @return 0 if equal, -1 if `a < b`, or +1 if `a > b`
 */
-int timespec_cmp(struct timespec a, struct timespec b) {
+int _timespec_cmp(struct timespec a, struct timespec b) {
  int cmp;
  if (!(cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec))) {
    cmp = (a.tv_nsec > b.tv_nsec) - (a.tv_nsec < b.tv_nsec);
@@ -16,10 +16,11 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "third_party/awk/cmd.h"
-#include "tool/args/args.h"
+#include "libc/calls/struct/timespec.h"

-int main(int argc, char *argv[]) {
-  LoadZipArgs(&argc, &argv);
-  return _awk(argc, argv);
+/**
+ * Checks if 𝑥 = 𝑦.
+ */
+bool _timespec_eq(struct timespec x, struct timespec y) {
+  return x.tv_sec == y.tv_sec && x.tv_nsec == y.tv_nsec;
 }
@@ -21,7 +21,7 @@
 /**
 * Converts timespec interval from microseconds.
 */
-struct timespec timespec_frommicros(int64_t x) {
+struct timespec _timespec_frommicros(int64_t x) {
  struct timespec ts;
  ts.tv_sec = x / 1000000;
  ts.tv_nsec = x % 1000000 * 1000;
@@ -21,7 +21,7 @@
 /**
 * Converts timespec interval from milliseconds.
 */
-struct timespec timespec_frommillis(int64_t x) {
+struct timespec _timespec_frommillis(int64_t x) {
  struct timespec ts;
  ts.tv_sec = x / 1000;
  ts.tv_nsec = x % 1000 * 1000000;
@@ -21,7 +21,7 @@
 /**
 * Converts timespec interval from nanoseconds.
 */
-struct timespec timespec_fromnanos(int64_t x) {
+struct timespec _timespec_fromnanos(int64_t x) {
  struct timespec ts;
  ts.tv_sec = x / 1000000000;
  ts.tv_nsec = x % 1000000000;
@@ -26,7 +26,7 @@
 * @param ts receives `CLOCK_REALTIME` timestamp
 * @param base must be `TIME_UTC`
 * @return `base` on success, or `0` on failure
- * @see timespec_real()
+ * @see _timespec_real()
 */
 int timespec_get(struct timespec *ts, int base) {
  if (base == TIME_UTC && !clock_gettime(CLOCK_REALTIME, ts)) {
@@ -0,0 +1,34 @@
+/*-*- 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 2022 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/calls/struct/timespec.h"
+
+/**
+ * Returns true if timespec `x` is greater than `y`.
+ */
+bool _timespec_gt(struct timespec x, struct timespec y) {
+  if (x.tv_sec > y.tv_sec) {
+    return true;
+  }
+  if (x.tv_sec == y.tv_sec) {
+    if (x.tv_nsec > y.tv_nsec) {
+      return true;
+    }
+  }
+  return false;
+}
@@ -0,0 +1,28 @@
+/*-*- 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 2022 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/calls/struct/timespec.h"
+
+/**
+ * Checks if 𝑥 ≥ 𝑦.
+ */
+bool _timespec_gte(struct timespec x, struct timespec y) {
+  if (x.tv_sec > y.tv_sec) return true;
+  if (x.tv_sec < y.tv_sec) return false;
+  return x.tv_nsec >= y.tv_nsec;
+}
@@ -25,10 +25,10 @@
 *
 * This function uses a `CLOCK_MONOTONIC` clock and never fails.
 *
- * @see timespec_real()
+ * @see _timespec_real()
 */
-struct timespec timespec_mono(void) {
+struct timespec _timespec_mono(void) {
  struct timespec ts;
-  _npassert(!clock_gettime(CLOCK_MONOTONIC, &ts));
+  _npassert(!clock_gettime(CLOCK_MONOTONIC_FAST, &ts));
  return ts;
 }
@@ -27,10 +27,10 @@
 * clock_gettime() or timespec_real() this interface avoids the use of
 * pointers which lets time handling code become more elegant.
 *
- * @see timespec_mono()
+ * @see _timespec_mono()
 */
-struct timespec timespec_real(void) {
+struct timespec _timespec_real(void) {
  struct timespec ts;
-  _npassert(!clock_gettime(CLOCK_REALTIME, &ts));
+  _npassert(!clock_gettime(CLOCK_REALTIME_FAST, &ts));
  return ts;
 }
@@ -17,10 +17,8 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/assert.h"
-#include "libc/calls/blockcancel.internal.h"
 #include "libc/calls/struct/timespec.h"
 #include "libc/errno.h"
-#include "libc/str/str.h"
 #include "libc/sysv/consts/clock.h"

 /**
@@ -28,14 +26,13 @@
 *
 * @return unslept time which may be non-zero if the call was interrupted
 */
-struct timespec timespec_sleep(struct timespec delay) {
-  errno_t rc;
+struct timespec _timespec_sleep(struct timespec delay) {
+  int rc;
  struct timespec remain;
-  BLOCK_CANCELLATIONS;
-  bzero(&remain, sizeof(remain));
-  if ((rc = clock_nanosleep(CLOCK_REALTIME, 0, &delay, &remain))) {
+  if (!(rc = clock_nanosleep(CLOCK_REALTIME, 0, &delay, &remain))) {
+    return (struct timespec){0};
+  } else {
    _npassert(rc == EINTR);
+    return remain;
  }
-  ALLOW_CANCELLATIONS;
-  return remain;
 }
@@ -26,13 +26,10 @@
 * Sleeps until the specified time.
 *
 * @return 0 on success, or EINTR if interrupted
- * @raise ECANCELED if thread was cancelled in masked mode
- * @raise EINTR if signal was delivered
- * @cancellationpoint
 */
-errno_t timespec_sleep_until(struct timespec abs_deadline) {
-  errno_t rc;
+int _timespec_sleep_until(struct timespec abs_deadline) {
+  int rc;
  rc = clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &abs_deadline, 0);
-  _npassert(!rc || rc == EINTR || rc == ECANCELED);
+  _npassert(!rc || rc == EINTR);
  return rc;
 }
@@ -21,7 +21,7 @@
 /**
 * Subtracts two nanosecond timestamps.
 */
-struct timespec timespec_sub(struct timespec a, struct timespec b) {
+struct timespec _timespec_sub(struct timespec a, struct timespec b) {
  a.tv_sec -= b.tv_sec;
  if (a.tv_nsec < b.tv_nsec) {
    a.tv_nsec += 1000000000;
@@ -31,9 +31,9 @@
 * `INT64_MIN` may be returned. The `errno` variable isn't changed.
 *
 * @return 64-bit scalar holding microseconds since epoch
- * @see timespec_totimeval()
+ * @see _timespec_totimeval()
 */
-int64_t timespec_tomicros(struct timespec ts) {
+int64_t _timespec_tomicros(struct timespec ts) {
  int64_t us;
  // reduce precision from nanos to micros
  if (ts.tv_nsec <= 999999000) {
@@ -32,7 +32,7 @@
 *
 * @return 64-bit scalar milliseconds since epoch
 */
-int64_t timespec_tomillis(struct timespec ts) {
+int64_t _timespec_tomillis(struct timespec ts) {
  int64_t ms;
  // reduce precision from nanos to millis
  if (ts.tv_nsec <= 999000000) {
@@ -22,13 +22,12 @@
 /**
 * Converts timespec to scalar.
 *
- * This returns the absolute number of nanoseconds in a timespec. If
- * overflow happens, then `INT64_MAX` or `INT64_MIN` is returned. The
- * `errno` variable isn't changed.
+ * This function will detect overflow in which case `INT64_MAX` or
+ * `INT64_MIN` may be returned. The `errno` variable isn't changed.
 *
 * @return 64-bit integer holding nanoseconds since epoch
 */
-int64_t timespec_tonanos(struct timespec x) {
+int64_t _timespec_tonanos(struct timespec x) {
  int64_t ns;
  if (!__builtin_mul_overflow(x.tv_sec, 1000000000ul, &ns) &&
      !__builtin_add_overflow(ns, x.tv_nsec, &ns)) {
@@ -27,9 +27,9 @@
 * timestamp has a special meaning.
 *
 * @return microseconds since epoch
- * @see timespec_tomicros()
+ * @see _timespec_tomicros()
 */
-struct timeval timespec_totimeval(struct timespec ts) {
+struct timeval _timespec_totimeval(struct timespec ts) {
  if (ts.tv_nsec < 1000000000 - 999) {
    return (struct timeval){ts.tv_sec, (ts.tv_nsec + 999) / 1000};
  } else {
@@ -21,7 +21,7 @@
 /**
 * Adds two microsecond timestamps.
 */
-struct timeval timeval_add(struct timeval x, struct timeval y) {
+struct timeval _timeval_add(struct timeval x, struct timeval y) {
  x.tv_sec += y.tv_sec;
  x.tv_usec += y.tv_usec;
  if (x.tv_usec >= 1000000) {
@@ -19,11 +19,9 @@
 #include "libc/calls/struct/timeval.h"

 /**
- * Compares microsecond timestamps.
- *
- * @return 0 if equal, -1 if `a < b`, or +1 if `a > b`
+ * Compares microseconds timestamps.
 */
-int timeval_cmp(struct timeval a, struct timeval b) {
+int _timeval_cmp(struct timeval a, struct timeval b) {
  int cmp;
  if (!(cmp = (a.tv_sec > b.tv_sec) - (a.tv_sec < b.tv_sec))) {
    cmp = (a.tv_usec > b.tv_usec) - (a.tv_usec < b.tv_usec);
@@ -19,11 +19,8 @@
 #include "libc/calls/struct/timeval.h"

 /**
- * Converts timeval interval from microseconds.
+ * Checks if 𝑥 = 𝑦.
 */
-struct timeval timeval_frommicros(int64_t x) {
-  struct timeval tv;
-  tv.tv_sec = x / 1000000;
-  tv.tv_usec = x % 1000000;
-  return tv;
+bool _timeval_eq(struct timeval x, struct timeval y) {
+  return x.tv_sec == y.tv_sec && x.tv_usec == y.tv_usec;
 }
@@ -0,0 +1,34 @@
+/*-*- 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 2022 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/calls/struct/timeval.h"
+
+/**
+ * Returns true if timeval `x` is greater than `y`.
+ */
+bool _timeval_gt(struct timeval x, struct timeval y) {
+  if (x.tv_sec > y.tv_sec) {
+    return true;
+  }
+  if (x.tv_sec == y.tv_sec) {
+    if (x.tv_usec > y.tv_usec) {
+      return true;
+    }
+  }
+  return false;
+}
@@ -19,11 +19,10 @@
 #include "libc/calls/struct/timeval.h"

 /**
- * Converts timeval interval from milliseconds.
+ * Checks if 𝑥 ≥ 𝑦.
 */
-struct timeval timeval_frommillis(int64_t x) {
-  struct timeval tv;
-  tv.tv_sec = x / 1000;
-  tv.tv_usec = x % 1000 * 1000;
-  return tv;
+bool _timeval_gte(struct timeval x, struct timeval y) {
+  if (x.tv_sec > y.tv_sec) return true;
+  if (x.tv_sec < y.tv_sec) return false;
+  return x.tv_usec >= y.tv_usec;
 }
@@ -21,7 +21,7 @@
 /**
 * Subtracts two nanosecond timestamps.
 */
-struct timeval timeval_sub(struct timeval a, struct timeval b) {
+struct timeval _timeval_sub(struct timeval a, struct timeval b) {
  a.tv_sec -= b.tv_sec;
  if (a.tv_usec < b.tv_usec) {
    a.tv_usec += 1000000;
@@ -21,6 +21,6 @@
 /**
 * Coerces `tv` from 1e-6 to 1e-9 granularity.
 */
-struct timespec timeval_totimespec(struct timeval tv) {
+struct timespec _timeval_totimespec(struct timeval tv) {
  return (struct timespec){tv.tv_sec, tv.tv_usec * 1000};
 }
@@ -22,9 +22,9 @@
 /**
 * Accumulates resource statistics in `y` to `x`.
 */
-void rusage_add(struct rusage *x, const struct rusage *y) {
-  x->ru_utime = timeval_add(x->ru_utime, y->ru_utime);
-  x->ru_stime = timeval_add(x->ru_stime, y->ru_stime);
+void _addrusage(struct rusage *x, const struct rusage *y) {
+  x->ru_utime = _timeval_add(x->ru_utime, y->ru_utime);
+  x->ru_stime = _timeval_add(x->ru_stime, y->ru_stime);
  x->ru_maxrss = MAX(x->ru_maxrss, y->ru_maxrss);
  x->ru_ixrss += y->ru_ixrss;
  x->ru_idrss += y->ru_idrss;
@@ -1,22 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_CALLS_BLOCKCANCEL_H_
-#define COSMOPOLITAN_LIBC_CALLS_BLOCKCANCEL_H_
-#include "libc/thread/thread.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-#define BLOCK_CANCELLATIONS \
-  do {                      \
-    int _CancelState;       \
-  _CancelState = _pthread_block_cancellations()
-
-#define ALLOW_CANCELLATIONS                   \
-  _pthread_allow_cancellations(_CancelState); \
-  }                                           \
-  while (0)
-
-int _pthread_block_cancellations(void);
-void _pthread_allow_cancellations(int);
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_LIBC_CALLS_BLOCKCANCEL_H_ */
@@ -1,19 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_CALLS_BLOCKSIGS_H_
-#define COSMOPOLITAN_LIBC_CALLS_BLOCKSIGS_H_
-#include "libc/calls/struct/sigset.h"
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-#define BLOCK_SIGNALS  \
-  do {                 \
-    sigset_t _SigMask; \
-  _SigMask = _sigblockall()
-
-#define ALLOW_SIGNALS    \
-  _sigsetmask(_SigMask); \
-  }                      \
-  while (0)
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_LIBC_CALLS_BLOCKSIGS_H_ */
@@ -5,25 +5,6 @@
 #define _POSIX2_VERSION _POSIX_VERSION
 #define _XOPEN_VERSION  700

-#define _POSIX_MAPPED_FILES               _POSIX_VERSION
-#define _POSIX_FSYNC                      _POSIX_VERSION
-#define _POSIX_IPV6                       _POSIX_VERSION
-#define _POSIX_THREADS                    _POSIX_VERSION
-#define _POSIX_THREAD_PROCESS_SHARED      _POSIX_VERSION
-#define _POSIX_THREAD_SAFE_FUNCTIONS      _POSIX_VERSION
-#define _POSIX_THREAD_ATTR_STACKADDR      _POSIX_VERSION
-#define _POSIX_THREAD_ATTR_STACKSIZE      _POSIX_VERSION
-#define _POSIX_THREAD_PRIORITY_SCHEDULING _POSIX_VERSION
-#define _POSIX_THREAD_CPUTIME             _POSIX_VERSION
-#define _POSIX_TIMEOUTS                   _POSIX_VERSION
-#define _POSIX_MONOTONIC_CLOCK            _POSIX_VERSION
-#define _POSIX_CPUTIME                    _POSIX_VERSION
-#define _POSIX_BARRIERS                   _POSIX_VERSION
-#define _POSIX_SPIN_LOCKS                 _POSIX_VERSION
-#define _POSIX_READER_WRITER_LOCKS        _POSIX_VERSION
-#define _POSIX_SEMAPHORES                 _POSIX_VERSION
-#define _POSIX_SHARED_MEMORY_OBJECTS      _POSIX_VERSION
-
 #define EOF      -1         /* end of file */
 #define WEOF     -1u        /* end of file (multibyte) */
 #define _IOFBF   0          /* fully buffered */
@@ -54,10 +35,11 @@
 #define WIFCONTINUED(s) ((s) == 0xffff)
 #define WIFEXITED(s)    (!WTERMSIG(s))
 #define WIFSIGNALED(s)  ((0xffff & (s)) - 1u < 0xffu)
-#define WIFSTOPPED(s)   ((255 & (s)) == 127)
-#define WSTOPSIG(s)     WEXITSTATUS(s)
-#define WTERMSIG(s)     (127 & (s))
-#define W_STOPCODE(s)   ((s) << 8 | 0177)
+#define WIFSTOPPED(s) \
+  ((short)(((0xffff & (unsigned)(s)) * 0x10001) >> 8) > 0x7f00)
+#define WSTOPSIG(s)   WEXITSTATUS(s)
+#define WTERMSIG(s)   (127 & (s))
+#define W_STOPCODE(s) ((s) << 8 | 0177)

 #if !(__ASSEMBLER__ + __LINKER__ + 0)
 COSMOPOLITAN_C_START_
@@ -83,13 +65,13 @@ char *ttyname(int);
 int access(const char *, int) dontthrow;
 int arch_prctl();
 int chdir(const char *);
-int chmod(const char *, unsigned);
-int chown(const char *, unsigned, unsigned);
+int chmod(const char *, uint32_t);
+int chown(const char *, uint32_t, uint32_t);
 int chroot(const char *);
 int close(int);
 int close_range(unsigned, unsigned, unsigned);
 int closefrom(int);
-int creat(const char *, unsigned);
+int creat(const char *, uint32_t);
 int dup(int);
 int dup2(int, int);
 int dup3(int, int, int);
@@ -102,22 +84,25 @@ int execv(const char *, char *const[]);
 int execve(const char *, char *const[], char *const[]);
 int execvp(const char *, char *const[]);
 int execvpe(const char *, char *const[], char *const[]);
+int fexecve(int, char *const[], char *const[]);
 int faccessat(int, const char *, int, int);
 int fadvise(int, uint64_t, uint64_t, int);
 int fchdir(int);
-int fchmod(int, unsigned) dontthrow;
-int fchmodat(int, const char *, unsigned, int);
-int fchown(int, unsigned, unsigned);
-int fchownat(int, const char *, unsigned, unsigned, int);
+int fchmod(int, uint32_t) dontthrow;
+int fchmodat(int, const char *, uint32_t, int);
+int fchown(int, uint32_t, uint32_t);
+int fchownat(int, const char *, uint32_t, uint32_t, int);
 int fcntl(int, int, ...);
 int fdatasync(int);
-int fexecve(int, char *const[], char *const[]);
 int flock(int, int);
 int fork(void);
 int fsync(int);
 int ftruncate(int, int64_t);
 int getdomainname(char *, size_t);
-int getgroups(int, unsigned[]);
+uint32_t getegid(void) nosideeffect;
+uint32_t geteuid(void) nosideeffect;
+uint32_t getgid(void) nosideeffect;
+int getgroups(int size, uint32_t list[]);
 int gethostname(char *, size_t);
 int getloadavg(double *, int);
 int getpgid(int) libcesque;
@@ -125,29 +110,36 @@ int getpgrp(void) nosideeffect;
 int getpid(void) nosideeffect libcesque;
 int getppid(void);
 int getpriority(int, unsigned);
-int getresgid(unsigned *, unsigned *, unsigned *);
-int getresuid(unsigned *, unsigned *, unsigned *);
+int getresgid(uint32_t *, uint32_t *, uint32_t *);
+int getresuid(uint32_t *, uint32_t *, uint32_t *);
 int getsid(int) nosideeffect libcesque;
 int gettid(void) libcesque;
+uint32_t getuid(void) libcesque;
+int sys_iopl(int);
 int ioprio_get(int, int);
 int ioprio_set(int, int, int);
 int issetugid(void);
 int kill(int, int);
 int killpg(int, int);
-int lchmod(const char *, unsigned);
-int lchown(const char *, unsigned, unsigned);
+int lchmod(const char *, uint32_t);
+int lchown(const char *, uint32_t, uint32_t);
 int link(const char *, const char *) dontthrow;
 int linkat(int, const char *, int, const char *, int);
 int madvise(void *, uint64_t, int);
-int makedirs(const char *, unsigned);
 int memfd_create(const char *, unsigned int);
 int mincore(void *, size_t, unsigned char *);
 int mkdir(const char *, unsigned);
 int mkdirat(int, const char *, unsigned);
-int mkfifo(const char *, unsigned);
-int mkfifoat(int, const char *, unsigned);
-int mknod(const char *, unsigned, uint64_t);
-int mknodat(int, const char *, int, uint64_t);
+int makedirs(const char *, unsigned);
+int mkfifo(const char *, uint32_t);
+int mkfifoat(int, const char *, uint32_t);
+int mknod(const char *, uint32_t, uint64_t);
+int mknodat(int, const char *, int32_t, uint64_t);
+int sys_mlock(const void *, size_t);
+int sys_mlock2(const void *, size_t, int);
+int sys_mlockall(int);
+int sys_munlock(const void *, size_t);
+int sys_munlockall(void);
 int nice(int);
 int open(const char *, int, ...);
 int openat(int, const char *, int, ...);
@@ -169,19 +161,19 @@ int renameat2(long, const char *, long, const char *, int);
 int rmdir(const char *);
 int sched_yield(void);
 int seccomp(unsigned, unsigned, void *);
-int setegid(unsigned);
-int seteuid(unsigned);
+int setegid(uint32_t);
+int seteuid(uint32_t);
 int setfsgid(unsigned);
 int setfsuid(unsigned);
 int setgid(unsigned);
-int setgroups(size_t, const unsigned[]);
+int setgroups(size_t, const uint32_t[]);
 int setpgid(int, int);
 int setpgrp(void);
 int setpriority(int, unsigned, int);
-int setregid(unsigned, unsigned);
-int setresgid(unsigned, unsigned, unsigned);
-int setresuid(unsigned, unsigned, unsigned);
-int setreuid(unsigned, unsigned);
+int setregid(uint32_t, uint32_t);
+int setresgid(uint32_t, uint32_t, uint32_t);
+int setresuid(uint32_t, uint32_t, uint32_t);
+int setreuid(uint32_t, uint32_t);
 int setsid(void);
 int setuid(unsigned);
 int sigignore(int);
@@ -189,22 +181,16 @@ int siginterrupt(int, int);
 int symlink(const char *, const char *);
 int symlinkat(const char *, int, const char *);
 int sync_file_range(int, int64_t, int64_t, unsigned);
-int sys_iopl(int);
-int sys_mlock(const void *, size_t);
-int sys_mlock2(const void *, size_t, int);
-int sys_mlockall(int);
-int sys_munlock(const void *, size_t);
-int sys_munlockall(void);
 int sys_ptrace(int, ...);
 int sys_sysctl(const int *, unsigned, void *, size_t *, void *, size_t);
-int tcgetpgrp(int);
-int tcsetpgrp(int, int);
+int tcsetpgrp(int, int32_t);
 int tgkill(int, int, int);
 int tkill(int, int);
 int tmpfd(void);
-int touch(const char *, unsigned);
+int touch(const char *, uint32_t);
 int truncate(const char *, int64_t);
 int ttyname_r(int, char *, size_t);
+unsigned umask(unsigned);
 int unlink(const char *);
 int unlink_s(const char **);
 int unlinkat(int, const char *, int);
@@ -213,10 +199,11 @@ int usleep(unsigned);
 int vfork(void) returnstwice;
 int wait(int *);
 int waitpid(int, int *, int);
+int32_t tcgetpgrp(int);
 intptr_t syscall(int, ...);
 long ptrace(int, ...);
-ssize_t copy_file_range(int, long *, int, long *, size_t, unsigned);
-ssize_t copyfd(int, int64_t *, int, int64_t *, size_t, unsigned);
+ssize_t copy_file_range(int, long *, int, long *, size_t, uint32_t);
+ssize_t copyfd(int, int64_t *, int, int64_t *, size_t, uint32_t);
 ssize_t getfiledescriptorsize(int);
 ssize_t lseek(int, int64_t, int);
 ssize_t pread(int, void *, size_t, int64_t);
@@ -225,13 +212,8 @@ ssize_t read(int, void *, size_t);
 ssize_t readansi(int, char *, size_t);
 ssize_t readlink(const char *, char *, size_t);
 ssize_t readlinkat(int, const char *, char *, size_t);
-ssize_t splice(int, int64_t *, int, int64_t *, size_t, unsigned);
+ssize_t splice(int, int64_t *, int, int64_t *, size_t, uint32_t);
 ssize_t write(int, const void *, size_t);
-unsigned getegid(void) nosideeffect;
-unsigned geteuid(void) nosideeffect;
-unsigned getgid(void) nosideeffect;
-unsigned getuid(void) libcesque;
-unsigned umask(unsigned);
 void sync(void);

 COSMOPOLITAN_C_END_
@@ -121,12 +121,21 @@ o/$(MODE)/libc/calls/execlp.o				\
 o/$(MODE)/libc/calls/statfs.o				\
 o/$(MODE)/libc/calls/fstatfs.o				\
 o/$(MODE)/libc/calls/execve-sysv.o			\
-o/$(MODE)/libc/calls/readlinkat-nt.o			\
 o/$(MODE)/libc/calls/execve-nt.greg.o			\
 o/$(MODE)/libc/calls/mkntenvblock.o: private		\
 		OVERRIDE_CPPFLAGS +=			\
 			-DSTACK_FRAME_UNLIMITED

+# we must disable static stack safety because:
+#   PATH_MAX*sizeof(char16_t)*2 exceeds 4096 byte frame limit
+o/$(MODE)/libc/calls/copyfile.o				\
+o/$(MODE)/libc/calls/symlinkat-nt.o			\
+o/$(MODE)/libc/calls/readlinkat-nt.o			\
+o/$(MODE)/libc/calls/linkat-nt.o			\
+o/$(MODE)/libc/calls/renameat-nt.o: private		\
+		OVERRIDE_CPPFLAGS +=			\
+			-DSTACK_FRAME_UNLIMITED
+
 # we must segregate codegen because:
 #   file contains multiple independently linkable apis
 o/$(MODE)/libc/calls/ioctl-siocgifconf.o		\
@@ -170,15 +179,12 @@ o//libc/calls/statfs2cosmo.o: private			\
 # we always want -O2 because:
 #   division is expensive if not optimized
 o/$(MODE)/libc/calls/clock.o				\
-o/$(MODE)/libc/calls/timespec_tomillis.o		\
-o/$(MODE)/libc/calls/timespec_tomicros.o		\
-o/$(MODE)/libc/calls/timespec_totimeval.o		\
-o/$(MODE)/libc/calls/timespec_fromnanos.o		\
-o/$(MODE)/libc/calls/timespec_frommillis.o		\
-o/$(MODE)/libc/calls/timespec_frommicros.o		\
-o/$(MODE)/libc/calls/timeval_tomillis.o			\
-o/$(MODE)/libc/calls/timeval_frommillis.o		\
-o/$(MODE)/libc/calls/timeval_frommicros.o: private	\
+o/$(MODE)/libc/calls/_timespec_tomillis.o		\
+o/$(MODE)/libc/calls/_timespec_tomicros.o		\
+o/$(MODE)/libc/calls/_timespec_totimeval.o		\
+o/$(MODE)/libc/calls/_timespec_fromnanos.o		\
+o/$(MODE)/libc/calls/_timespec_frommillis.o		\
+o/$(MODE)/libc/calls/_timespec_frommicros.o: private	\
 		OVERRIDE_CFLAGS +=			\
 			-O2

@@ -1,7 +1,7 @@
 /*-*- 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 2023 Justine Alexandra Roberts Tunney                              │
+│ Copyright 2021 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         │
@@ -16,14 +16,13 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/runtime/runtime.h"
+#include "libc/calls/termios.h"
+#include "libc/sysv/consts/termios.h"

-const char *GetCpuidEmulator(void) {
-  static bool once;
-  static char s[13];
-  if (!once) {
-    GetCpuidBrand(s, 0x40000000);
-    once = true;
+uint32_t cfgetispeed(const struct termios *t) {
+  if (CBAUD) {
+    return t->c_cflag & CBAUD;
+  } else {
+    return t->c_ispeed;
  }
-  return s;
 }
@@ -1,7 +1,7 @@
 /*-*- 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 2023 Justine Alexandra Roberts Tunney                              │
+│ Copyright 2021 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         │
@@ -16,14 +16,13 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/runtime/runtime.h"
+#include "libc/calls/termios.h"
+#include "libc/sysv/consts/termios.h"

-const char *GetCpuidOs(void) {
-  static bool once;
-  static char s[13];
-  if (!once) {
-    GetCpuidBrand(s, 0x40031337);
-    once = true;
+uint32_t cfgetospeed(const struct termios *t) {
+  if (CBAUD) {
+    return t->c_cflag & CBAUD;
+  } else {
+    return t->c_ospeed;
  }
-  return s;
 }
@@ -0,0 +1,33 @@
+/*-*- 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 2021 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/calls/termios.h"
+#include "libc/sysv/errfuns.h"
+
+int cfsetispeed(struct termios *t, unsigned speed) {
+  if (speed) {
+    if (CBAUD) {
+      if (speed & ~CBAUD) return einval();
+      t->c_cflag &= ~CBAUD;
+      t->c_cflag |= speed;
+    } else {
+      t->c_ispeed = speed;
+    }
+  }
+  return 0;
+}
@@ -0,0 +1,36 @@
+/*-*- 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 2021 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/calls/termios.h"
+#include "libc/sysv/consts/termios.h"
+#include "libc/sysv/errfuns.h"
+
+int cfsetospeed(struct termios *t, unsigned speed) {
+  if (CBAUD) {
+    if (!(speed & ~CBAUD)) {
+      t->c_cflag &= ~CBAUD;
+      t->c_cflag |= speed;
+      return 0;
+    } else {
+      return einval();
+    }
+  } else {
+    t->c_ospeed = speed;
+    return 0;
+  }
+}
@@ -1,88 +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 2021 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/calls/termios.h"
-#include "libc/sysv/consts/termios.h"
-#include "libc/sysv/errfuns.h"
-
-/**
- * Returns input baud rate.
- * @asyncsignalsafe
- */
-uint32_t cfgetispeed(const struct termios *t) {
-  if (CBAUD) {
-    return t->c_cflag & CBAUD;
-  } else {
-    return t->c_ispeed;
-  }
-}
-
-/**
- * Returns output baud rate.
- * @asyncsignalsafe
- */
-uint32_t cfgetospeed(const struct termios *t) {
-  if (CBAUD) {
-    return t->c_cflag & CBAUD;
-  } else {
-    return t->c_ospeed;
-  }
-}
-
-/**
- * Sets input baud rate.
- *
- * @return 0 on success, or -1 w/ errno
- * @asyncsignalsafe
- */
-int cfsetispeed(struct termios *t, unsigned speed) {
-  if (speed) {
-    if (CBAUD) {
-      if (!(speed & ~CBAUD)) {
-        t->c_cflag &= ~CBAUD;
-        t->c_cflag |= speed;
-      } else {
-        return einval();
-      }
-    } else {
-      t->c_ispeed = speed;
-    }
-  }
-  return 0;
-}
-
-/**
- * Sets output baud rate.
- *
- * @return 0 on success, or -1 w/ errno
- * @asyncsignalsafe
- */
-int cfsetospeed(struct termios *t, unsigned speed) {
-  if (CBAUD) {
-    if (!(speed & ~CBAUD)) {
-      t->c_cflag &= ~CBAUD;
-      t->c_cflag |= speed;
-      return 0;
-    } else {
-      return einval();
-    }
-  } else {
-    t->c_ospeed = speed;
-    return 0;
-  }
-}
@@ -36,7 +36,7 @@
 int chdir(const char *path) {
  int rc;
  GetProgramExecutableName();  // XXX: ugly workaround
-  if (!path || (IsAsan() && !__asan_is_valid_str(path))) {
+  if (!path || (IsAsan() && !__asan_is_valid(path, 1))) {
    rc = efault();
  } else if (!IsWindows()) {
    rc = sys_chdir(path);
@@ -49,7 +49,7 @@
 */
 int chroot(const char *path) {
  int rc;
-  if (!path || (IsAsan() && !__asan_is_valid_str(path))) {
+  if (!path || (IsAsan() && !__asan_is_valid(path, 1))) {
    rc = efault();
  } else {
    rc = sys_chroot(path);
@@ -55,7 +55,7 @@ int64_t clock(void) {
  if (clock_gettime(CLOCK_PROCESS_CPUTIME_ID, &ts) == -1) {
    errno = e;
    if (getrusage(RUSAGE_SELF, &ru) != -1) {
-      ts = timeval_totimespec(timeval_add(ru.ru_utime, ru.ru_stime));
+      ts = _timeval_totimespec(_timeval_add(ru.ru_utime, ru.ru_stime));
    } else {
      return -1;
    }
@@ -17,11 +17,11 @@
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/struct/timespec.h"
+#include "libc/thread/thread.h"
 #include "libc/nexgen32e/rdtsc.h"
 #include "libc/nexgen32e/x86feature.h"
 #include "libc/sysv/consts/clock.h"
 #include "libc/sysv/errfuns.h"
-#include "libc/thread/thread.h"

 static struct {
  pthread_once_t once;
@@ -30,7 +30,7 @@ static struct {
 } g_mono;

 static void sys_clock_gettime_mono_init(void) {
-  g_mono.base_wall = timespec_real();
+  g_mono.base_wall = _timespec_real();
  g_mono.base_tick = rdtsc();
 }

@@ -42,7 +42,7 @@ int sys_clock_gettime_mono(struct timespec *time) {
    pthread_once(&g_mono.once, sys_clock_gettime_mono_init);
    cycles = rdtsc() - g_mono.base_tick;
    nanos = cycles / 3;
-    *time = timespec_add(g_mono.base_wall, timespec_fromnanos(nanos));
+    *time = _timespec_add(g_mono.base_wall, _timespec_fromnanos(nanos));
    return 0;
  } else {
    return einval();
@@ -50,23 +50,20 @@
 *     sys_clock_gettime   l:       220𝑐        71𝑛𝑠
 *
 * @param clock can be one of:
- *    - `CLOCK_REALTIME`: universally supported
- *    - `CLOCK_REALTIME_FAST`: ditto but faster on freebsd
- *    - `CLOCK_REALTIME_PRECISE`: ditto but better on freebsd
- *    - `CLOCK_REALTIME_COARSE`: : like `CLOCK_REALTIME_FAST` w/ Linux 2.6.32+
- *    - `CLOCK_MONOTONIC`: universally supported
- *    - `CLOCK_MONOTONIC_FAST`: ditto but faster on freebsd
- *    - `CLOCK_MONOTONIC_PRECISE`: ditto but better on freebsd
- *    - `CLOCK_MONOTONIC_COARSE`: : like `CLOCK_MONOTONIC_FAST` w/ Linux 2.6.32+
- *    - `CLOCK_MONOTONIC_RAW`: is actually monotonic but needs Linux 2.6.28+
- *    - `CLOCK_PROCESS_CPUTIME_ID`: linux and bsd
- *    - `CLOCK_THREAD_CPUTIME_ID`: linux and bsd
- *    - `CLOCK_MONOTONIC_COARSE`: linux, freebsd
- *    - `CLOCK_PROF`: linux and netbsd
- *    - `CLOCK_BOOTTIME`: linux and openbsd
- *    - `CLOCK_REALTIME_ALARM`: linux-only
- *    - `CLOCK_BOOTTIME_ALARM`: linux-only
- *    - `CLOCK_TAI`: linux-only
+ *     - `CLOCK_REALTIME`: universally supported
+ *     - `CLOCK_REALTIME_FAST`: ditto but faster on freebsd
+ *     - `CLOCK_MONOTONIC`: universally supported
+ *     - `CLOCK_MONOTONIC_FAST`: ditto but faster on freebsd
+ *     - `CLOCK_MONOTONIC_RAW`: nearly universally supported
+ *     - `CLOCK_PROCESS_CPUTIME_ID`: linux and bsd
+ *     - `CLOCK_THREAD_CPUTIME_ID`: linux and bsd
+ *     - `CLOCK_REALTIME_COARSE`: : linux and openbsd
+ *     - `CLOCK_MONOTONIC_COARSE`: linux
+ *     - `CLOCK_PROF`: linux and netbsd
+ *     - `CLOCK_BOOTTIME`: linux and openbsd
+ *     - `CLOCK_REALTIME_ALARM`: linux-only
+ *     - `CLOCK_BOOTTIME_ALARM`: linux-only
+ *     - `CLOCK_TAI`: linux-only
 * @param ts is where the result is stored
 * @return 0 on success, or -1 w/ errno
 * @error EPERM if pledge() is in play without stdio promise
@@ -87,7 +84,7 @@ int clock_gettime(int clock, struct timespec *ts) {
    rc = __clock_gettime(clock, ts);
  }
 #if SYSDEBUG
-  if (__tls_enabled && !(__get_tls()->tib_flags & TIB_FLAG_TIME_CRITICAL)) {
+  if (!(__get_tls()->tib_flags & TIB_FLAG_TIME_CRITICAL)) {
    STRACE("clock_gettime(%s, [%s]) → %d% m", DescribeClockName(clock),
           DescribeTimespec(rc, ts), rc);
  }
@@ -119,7 +116,7 @@ clock_gettime_f *__clock_gettime_get(bool *opt_out_isfast) {
  return res;
 }

-_Hide int __clock_gettime_init(int clockid, struct timespec *ts) {
+hidden int __clock_gettime_init(int clockid, struct timespec *ts) {
  clock_gettime_f *gettime;
  __clock_gettime = gettime = __clock_gettime_get(0);
  return gettime(clockid, ts);
@@ -7,9 +7,9 @@ COSMOPOLITAN_C_START_
 typedef int clock_gettime_f(int, struct timespec *);

 extern clock_gettime_f *__clock_gettime;
-clock_gettime_f *__clock_gettime_get(bool *) _Hide;
-int __clock_gettime_init(int, struct timespec *) _Hide;
-int sys_clock_gettime_mono(struct timespec *) _Hide;
+clock_gettime_f *__clock_gettime_get(bool *) hidden;
+int __clock_gettime_init(int, struct timespec *) hidden;
+int sys_clock_gettime_mono(struct timespec *) hidden;

 COSMOPOLITAN_C_END_
 #endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
@@ -33,24 +33,24 @@ textwindows int sys_clock_nanosleep_nt(int clock, int flags,
    abs = *req;
    for (;;) {
      if (sys_clock_gettime_nt(clock, &now)) return -1;
-      if (timespec_cmp(now, abs) >= 0) return 0;
-      if (_check_interrupts(false, g_fds.p)) return -1;
+      if (_timespec_gte(now, abs)) return 0;
+      if (_check_interrupts(false, g_fds.p)) return eintr();
      SleepEx(MIN(__SIG_POLLING_INTERVAL_MS,
-                  timespec_tomillis(timespec_sub(abs, now))),
+                  _timespec_tomillis(_timespec_sub(abs, now))),
              false);
    }
  } else {
    if (sys_clock_gettime_nt(clock, &now)) return -1;
-    abs = timespec_add(now, *req);
+    abs = _timespec_add(now, *req);
    for (;;) {
      sys_clock_gettime_nt(clock, &now);
-      if (timespec_cmp(now, abs) >= 0) return 0;
+      if (_timespec_gte(now, abs)) return 0;
      if (_check_interrupts(false, g_fds.p)) {
-        if (rem) *rem = timespec_sub(abs, now);
-        return -1;
+        if (rem) *rem = _timespec_sub(abs, now);
+        return eintr();
      }
      SleepEx(MIN(__SIG_POLLING_INTERVAL_MS,
-                  timespec_tomillis(timespec_sub(abs, now))),
+                  _timespec_tomillis(_timespec_sub(abs, now))),
              false);
    }
  }
@@ -31,8 +31,8 @@ int sys_clock_nanosleep_openbsd(int clock, int flags,
      res = sys_nanosleep(req, rem);
    } else {
      sys_clock_gettime(clock, &now);
-      if (timespec_cmp(*req, now) > 0) {
-        rel = timespec_sub(*req, now);
+      if (_timespec_gt(*req, now)) {
+        rel = _timespec_sub(*req, now);
        res = sys_nanosleep(&rel, 0);
      } else {
        res = 0;
@@ -31,10 +31,10 @@ int sys_clock_nanosleep_xnu(int clock, int flags, const struct timespec *req,
  struct timeval now, abs, rel;
  if (clock == CLOCK_REALTIME) {
    if (flags & TIMER_ABSTIME) {
-      abs = timespec_totimeval(*req);
+      abs = _timespec_totimeval(*req);
      sys_gettimeofday_xnu(&now, 0, 0);
-      if (timeval_cmp(abs, now) > 0) {
-        rel = timeval_sub(abs, now);
+      if (_timeval_gt(abs, now)) {
+        rel = _timeval_sub(abs, now);
        res = sys_select(0, 0, 0, 0, &rel);
      } else {
        res = 0;
@@ -16,12 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/assert.h"
 #include "libc/calls/asan.internal.h"
-#include "libc/calls/blockcancel.internal.h"
-#include "libc/calls/calls.h"
-#include "libc/calls/clock_gettime.internal.h"
-#include "libc/calls/cp.internal.h"
 #include "libc/calls/state.internal.h"
 #include "libc/calls/struct/timespec.h"
 #include "libc/calls/struct/timespec.internal.h"
@@ -31,158 +26,11 @@
 #include "libc/errno.h"
 #include "libc/intrin/describeflags.internal.h"
 #include "libc/intrin/strace.internal.h"
-#include "libc/intrin/weaken.h"
-#include "libc/macros.internal.h"
-#include "libc/nt/ntdll.h"
-#include "libc/str/str.h"
 #include "libc/sysv/consts/clock.h"
 #include "libc/sysv/consts/timer.h"
 #include "libc/sysv/errfuns.h"
-#include "libc/thread/thread.h"
 #include "libc/thread/tls.h"

-static int64_t g_nanosleep_latency;
-
-static errno_t sys_clock_nanosleep(int clock, int flags,
-                                   const struct timespec *req,
-                                   struct timespec *rem) {
-  int e, rc;
-  BEGIN_CANCELLATION_POINT;
-  e = errno;
-  if (IsLinux() || IsFreebsd() || IsNetbsd()) {
-    rc = __sys_clock_nanosleep(clock, flags, req, rem);
-  } else if (IsXnu()) {
-    rc = sys_clock_nanosleep_xnu(clock, flags, req, rem);
-  } else if (IsOpenbsd()) {
-    rc = sys_clock_nanosleep_openbsd(clock, flags, req, rem);
-  } else {
-    rc = sys_clock_nanosleep_nt(clock, flags, req, rem);
-  }
-  if (rc == -1) {
-    rc = errno;
-    errno = e;
-  }
-  END_CANCELLATION_POINT;
-  return rc;
-}
-
-// determine sched_yield() vs. clock_nanosleep() threshold
-// 1ns sys_clock_nanosleep() on Windows takes milliseconds :'(
-// 1ns sys_clock_nanosleep() on Linux/FreeBSD takes tens of microseconds
-// 1ns sys_clock_nanosleep() on OpenBSD/NetBSD takes tens of milliseconds D:
-static struct timespec GetNanosleepLatency(void) {
-  errno_t rc;
-  int64_t nanos;
-  clock_gettime_f *cgt;
-  struct timespec x, y, w = {0, 1};
-  if (!(nanos = g_nanosleep_latency)) {
-    BLOCK_CANCELLATIONS;
-    for (cgt = __clock_gettime_get(0);;) {
-      _npassert(!cgt(CLOCK_REALTIME_PRECISE, &x));
-      rc = sys_clock_nanosleep(CLOCK_REALTIME, 0, &w, 0);
-      _npassert(!rc || rc == EINTR);
-      if (!rc) {
-        _npassert(!cgt(CLOCK_REALTIME_PRECISE, &y));
-        nanos = timespec_tonanos(timespec_sub(y, x));
-        g_nanosleep_latency = nanos;
-        break;
-      }
-    }
-    ALLOW_CANCELLATIONS;
-  }
-  return timespec_fromnanos(nanos);
-}
-
-static errno_t CheckCancel(void) {
-  if (_weaken(pthread_testcancel_np)) {
-    return _weaken(pthread_testcancel_np)();
-  } else {
-    return 0;
-  }
-}
-
-static errno_t SpinNanosleep(int clock, int flags, const struct timespec *req,
-                             struct timespec *rem) {
-  errno_t rc;
-  clock_gettime_f *cgt;
-  struct timespec now, start, elapsed;
-  if ((rc = CheckCancel())) {
-    if (rc == EINTR && !flags && rem) {
-      *rem = *req;
-    }
-    return rc;
-  }
-  cgt = __clock_gettime_get(0);
-  _npassert(!cgt(CLOCK_REALTIME, &start));
-  for (;;) {
-    sched_yield();
-    _npassert(!cgt(CLOCK_REALTIME, &now));
-    if (flags & TIMER_ABSTIME) {
-      if (timespec_cmp(now, *req) >= 0) {
-        return 0;
-      }
-      if ((rc = CheckCancel())) {
-        return rc;
-      }
-    } else {
-      if (timespec_cmp(now, start) < 0) continue;
-      elapsed = timespec_sub(now, start);
-      if ((rc = CheckCancel())) {
-        if (rc == EINTR && rem) {
-          if (timespec_cmp(elapsed, *req) >= 0) {
-            bzero(rem, sizeof(*rem));
-          } else {
-            *rem = elapsed;
-          }
-        }
-        return rc;
-      }
-      if (timespec_cmp(elapsed, *req) >= 0) {
-        return 0;
-      }
-    }
-  }
-}
-
-static bool ShouldUseSpinNanosleep(int clock, int flags,
-                                   const struct timespec *req) {
-  errno_t e;
-  struct timespec now;
-  if (IsWindows()) {
-    // Our spin technique here is intended to take advantage of the fact
-    // that sched_yield() takes about a hundred nanoseconds. But Windows
-    // SleepEx(0, 0) a.k.a. NtYieldExecution() takes a whole millisecond
-    // and it matters not whether our intent is to yielding or sleeping,
-    // since we use the SleepEx() function to implement both. Therefore,
-    // there's no reason to use SpinNanosleep() on Windows.
-    return false;
-  }
-  if (clock != CLOCK_REALTIME &&          //
-      clock != CLOCK_REALTIME_PRECISE &&  //
-      clock != CLOCK_MONOTONIC &&         //
-      clock != CLOCK_MONOTONIC_RAW &&     //
-      clock != CLOCK_MONOTONIC_PRECISE) {
-    return false;
-  }
-  if (!flags) {
-    return timespec_cmp(*req, GetNanosleepLatency()) < 0;
-  }
-  // We need a clock_gettime() system call to perform this check if the
-  // sleep request is an absolute timestamp. So we avoid doing that on
-  // systems where sleep latency isn't too outrageous.
-  if (timespec_cmp(GetNanosleepLatency(), timespec_fromnanos(50 * 1000)) < 0) {
-    return false;
-  }
-  e = errno;
-  if (__clock_gettime_get(0)(clock, &now)) {
-    // punt to the nanosleep system call
-    errno = e;
-    return false;
-  }
-  return timespec_cmp(*req, now) < 0 ||
-         timespec_cmp(timespec_sub(*req, now), GetNanosleepLatency()) < 0;
-}
-
 /**
 * Sleeps for particular amount of time.
 *
@@ -207,12 +55,12 @@ static bool ShouldUseSpinNanosleep(int clock, int flags,
 *
 *     struct timespec rel, now, abs;
 *     clock_gettime(CLOCK_REALTIME, &now);
- *     rel = timespec_frommillis(100);
- *     abs = timespec_add(now, rel);
+ *     rel = _timespec_frommillis(100);
+ *     abs = _timespec_add(now, rel);
 *     while (clock_nanosleep(CLOCK_REALTIME, TIMER_ABSTIME, &abs, 0));
 *
 * will accurately spin on `EINTR` errors. That way you're not impeding
- * signal delivery and you're not loosing precision on the wait timeout.
+ * signal delivery and you're not losing precision on your wait timeout.
 * This function has first-class support on Linux, FreeBSD, and NetBSD;
 * on OpenBSD it's good; on XNU it's bad; and on Windows it's ugly.
 *
@@ -226,43 +74,51 @@ static bool ShouldUseSpinNanosleep(int clock, int flags,
 *     if flags is `TIMER_ABSTIME` then `rem` is ignored
 * @return 0 on success, or errno on error
 * @raise EINTR when a signal got delivered while we were waiting
- * @raise ECANCELED if thread was cancelled in masked mode
 * @raise ENOTSUP if `clock` is known but we can't use it here
 * @raise EFAULT if `req` or null or bad memory was passed
 * @raise EINVAL if `clock` is unknown to current platform
 * @raise EINVAL if `flags` has an unrecognized value
 * @raise EINVAL if `req->tv_nsec ∉ [0,1000000000)`
 * @raise ENOSYS on bare metal
- * @cancellationpoint
 * @returnserrno
 * @norestart
 */
 errno_t clock_nanosleep(int clock, int flags, const struct timespec *req,
                        struct timespec *rem) {
-  int rc;
-  LOCKTRACE("clock_nanosleep(%s, %s, %s) → ...", DescribeClockName(clock),
-            DescribeSleepFlags(flags), DescribeTimespec(0, req));
-  if (IsMetal()) {
-    rc = ENOSYS;
-  } else if (!req || (IsAsan() && (!__asan_is_valid_timespec(req) ||
-                                   (rem && !__asan_is_valid_timespec(rem))))) {
-    rc = EFAULT;
+  int rc, e = errno;
+
+  if (!req || (IsAsan() && (!__asan_is_valid_timespec(req) ||
+                            (rem && !__asan_is_valid_timespec(rem))))) {
+    rc = efault();
  } else if (clock == 127 ||              //
             (flags & ~TIMER_ABSTIME) ||  //
             req->tv_sec < 0 ||           //
             !(0 <= req->tv_nsec && req->tv_nsec <= 999999999)) {
-    rc = EINVAL;
-  } else if (ShouldUseSpinNanosleep(clock, flags, req)) {
-    rc = SpinNanosleep(clock, flags, req, rem);
-  } else {
+    rc = einval();
+  } else if (IsLinux() || IsFreebsd() || IsNetbsd()) {
    rc = sys_clock_nanosleep(clock, flags, req, rem);
+  } else if (IsXnu()) {
+    rc = sys_clock_nanosleep_xnu(clock, flags, req, rem);
+  } else if (IsOpenbsd()) {
+    rc = sys_clock_nanosleep_openbsd(clock, flags, req, rem);
+  } else if (IsMetal()) {
+    rc = enosys();
+  } else {
+    rc = sys_clock_nanosleep_nt(clock, flags, req, rem);
  }
+
+  if (rc == -1) {
+    rc = errno;
+    errno = e;
+  }
+
 #if SYSDEBUG
-  if (__tls_enabled && !(__get_tls()->tib_flags & TIB_FLAG_TIME_CRITICAL)) {
+  if (!(__get_tls()->tib_flags & TIB_FLAG_TIME_CRITICAL)) {
    STRACE("clock_nanosleep(%s, %s, %s, [%s]) → %s", DescribeClockName(clock),
           DescribeSleepFlags(flags), DescribeTimespec(0, req),
-           DescribeTimespec(rc, rem), DescribeErrno(rc));
+           DescribeTimespec(rc, rem), DescribeErrnoResult(rc));
  }
 #endif
+
  return rc;
 }
@@ -18,22 +18,15 @@
 ╚─────────────────────────────────────────────────────────────────────────────*/
 #include "libc/calls/struct/fd.internal.h"
 #include "libc/errno.h"
-#include "libc/intrin/weaken.h"
 #include "libc/nt/enum/filetype.h"
 #include "libc/nt/files.h"
 #include "libc/nt/runtime.h"
 #include "libc/sysv/consts/o.h"

-void sys_fcntl_nt_lock_cleanup(int) _Hide;
-
-textwindows int sys_close_nt(struct Fd *fd, int fildes) {
+textwindows int sys_close_nt(struct Fd *fd) {
  int e;
  bool ok = true;

-  if (_weaken(sys_fcntl_nt_lock_cleanup)) {
-    _weaken(sys_fcntl_nt_lock_cleanup)(fildes);
-  }
-
  if (fd->kind == kFdFile && ((fd->flags & O_ACCMODE) != O_RDONLY &&
                              GetFileType(fd->handle) == kNtFileTypeDisk)) {
    // Like Linux, closing a file on Windows doesn't guarantee it's
@@ -16,10 +16,10 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
+#include "libc/assert.h"
 #include "libc/calls/calls.h"
 #include "libc/calls/internal.h"
 #include "libc/calls/state.internal.h"
-#include "libc/calls/struct/fd.internal.h"
 #include "libc/calls/syscall-nt.internal.h"
 #include "libc/calls/syscall-sysv.internal.h"
 #include "libc/dce.h"
@@ -81,7 +81,7 @@ int close(int fd) {
        } else if (__isfdkind(fd, kFdFile) ||     //
                   __isfdkind(fd, kFdConsole) ||  //
                   __isfdkind(fd, kFdProcess)) {  //
-          rc = sys_close_nt(g_fds.p + fd, fd);
+          rc = sys_close_nt(g_fds.p + fd);
        } else {
          rc = eio();
        }
@@ -27,9 +27,12 @@
 /**
 * Closes extra file descriptors, e.g.
 *
- *     if (closefrom(3))
- *       for (int i = 3; i < 256; ++i)
+ *     // close all non-stdio file descriptors
+ *     if (closefrom(3) == -1) {
+ *       for (int i = 3; i < 256; ++i) {
 *         close(i);
+ *       }
+ *     }
 *
 * @return 0 on success, or -1 w/ errno
 * @raise EBADF if `first` is negative
@@ -37,7 +40,6 @@
 * @raise EBADF on OpenBSD if `first` is greater than highest fd
 * @raise EINVAL if flags are bad or first is greater than last
 * @raise EMFILE if a weird race condition happens on Linux
- * @raise ECANCELED if thread was cancelled in masked mode
 * @raise EINTR possibly on OpenBSD
 * @raise ENOMEM on Linux maybe
 */
@@ -16,18 +16,16 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/calls.h"
-#include "libc/calls/struct/stat.h"
-#include "libc/dce.h"
-#include "libc/errno.h"
 #include "libc/intrin/bits.h"
 #include "libc/intrin/safemacros.internal.h"
+#include "libc/calls/calls.h"
 #include "libc/intrin/strace.internal.h"
+#include "libc/dce.h"
+#include "libc/errno.h"
 #include "libc/log/libfatal.internal.h"
 #include "libc/runtime/runtime.h"
 #include "libc/str/str.h"
 #include "libc/sysv/consts/ok.h"
-#include "libc/sysv/consts/s.h"
 #include "libc/sysv/errfuns.h"

 static bool IsExePath(const char *s, size_t n) {
@@ -50,9 +48,6 @@ static bool AccessCommand(const char *name, char *path, size_t pathsz,
                          size_t pathlen) {
  size_t suffixlen;
  suffixlen = strlen(suffix);
-  if (IsWindows() && suffixlen == 0 && !IsExePath(name, namelen) &&
-      !IsComPath(name, namelen))
-    return false;
  if (pathlen + 1 + namelen + suffixlen + 1 > pathsz) return false;
  if (pathlen && (path[pathlen - 1] != '/' && path[pathlen - 1] != '\\')) {
    path[pathlen] = !IsWindows()                  ? '/'
@@ -62,16 +57,7 @@ static bool AccessCommand(const char *name, char *path, size_t pathsz,
  }
  memcpy(path + pathlen, name, namelen);
  memcpy(path + pathlen + namelen, suffix, suffixlen + 1);
-  if (!access(path, X_OK)) {
-    struct stat st;
-    if (!stat(path, &st)) {
-      if (S_ISREG(st.st_mode)) {
-        return true;
-      } else {
-        errno = EACCES;
-      }
-    }
-  }
+  if (!access(path, X_OK)) return true;
  if (errno == EACCES || *err != EACCES) *err = errno;
  return false;
 }
@@ -16,9 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/blockcancel.internal.h"
 #include "libc/calls/calls.h"
-#include "libc/calls/cp.internal.h"
 #include "libc/calls/internal.h"
 #include "libc/calls/struct/sigset.h"
 #include "libc/calls/struct/sigset.internal.h"
@@ -41,7 +39,6 @@ static bool HasCopyFileRange(void) {
  bool ok;
  int e, rc;
  e = errno;
-  BLOCK_CANCELLATIONS;
  if (IsLinux()) {
    // We modernize our detection by a few years for simplicity.
    // This system call is chosen since it's listed by pledge().
@@ -52,7 +49,6 @@ static bool HasCopyFileRange(void) {
  } else {
    ok = false;
  }
-  ALLOW_CANCELLATIONS;
  errno = e;
  return ok;
 }
@@ -85,7 +81,6 @@ static void copy_file_range_init(void) {
 * @raise EBADF if `infd` or `outfd` aren't open files or append-only
 * @raise EPERM if `fdout` refers to an immutable file on Linux
 * @raise ENOTSUP if `infd` or `outfd` is a zip file descriptor
- * @raise ECANCELED if thread was cancelled in masked mode
 * @raise EINVAL if ranges overlap or `flags` is non-zero
 * @raise EFBIG if `setrlimit(RLIMIT_FSIZE)` is exceeded
 * @raise EFAULT if one of the pointers memory is bad
@@ -98,15 +93,12 @@ static void copy_file_range_init(void) {
 * @raise EIO if a low-level i/o error happens
 * @see sendfile() for seekable → socket
 * @see splice() for fd ↔ pipe
- * @cancellationpoint
 */
 ssize_t copy_file_range(int infd, int64_t *opt_in_out_inoffset, int outfd,
                        int64_t *opt_in_out_outoffset, size_t uptobytes,
                        uint32_t flags) {
  ssize_t rc;
  pthread_once(&g_copy_file_range.once, copy_file_range_init);
-  BEGIN_CANCELLATION_POINT;
-
  if (!g_copy_file_range.ok) {
    rc = enosys();
  } else if (IsAsan() && ((opt_in_out_inoffset &&
@@ -120,8 +112,6 @@ ssize_t copy_file_range(int infd, int64_t *opt_in_out_inoffset, int outfd,
    rc = sys_copy_file_range(infd, opt_in_out_inoffset, outfd,
                             opt_in_out_outoffset, uptobytes, flags);
  }
-
-  END_CANCELLATION_POINT;
  STRACE("copy_file_range(%d, %s, %d, %s, %'zu, %#x) → %'ld% m", infd,
         DescribeInOutInt64(rc, opt_in_out_inoffset), outfd,
         DescribeInOutInt64(rc, opt_in_out_outoffset), uptobytes, flags);
@@ -1,59 +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 2022 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/calls/blockcancel.internal.h"
-#include "libc/calls/cp.internal.h"
-#include "libc/runtime/internal.h"
-#include "libc/runtime/runtime.h"
-#include "libc/thread/posixthread.internal.h"
-#include "libc/thread/tls.h"
-#ifdef MODE_DBG
-
-int begin_cancellation_point(void) {
-  int state = 0;
-  struct CosmoTib *tib;
-  struct PosixThread *pt;
-  if (__enable_tls) {
-    tib = __get_tls();
-    if ((pt = (struct PosixThread *)tib->tib_pthread)) {
-      state = pt->flags & PT_INCANCEL;
-      pt->flags |= PT_INCANCEL;
-    }
-  }
-  return state;
-}
-
-void end_cancellation_point(int state) {
-  struct CosmoTib *tib;
-  struct PosixThread *pt;
-  if (__enable_tls) {
-    tib = __get_tls();
-    if ((pt = (struct PosixThread *)tib->tib_pthread)) {
-      pt->flags &= ~PT_INCANCEL;
-      pt->flags |= state;
-    }
-  }
-}
-
-void report_cancellation_point(void) {
-  BLOCK_CANCELLATIONS;
-  _bt("error: need BEGIN/END_CANCELLATION_POINT\n");
-  ALLOW_CANCELLATIONS;
-}
-
-#endif /* MODE_DBG */
@@ -1,25 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_CALLS_CP_INTERNAL_H_
-#define COSMOPOLITAN_LIBC_CALLS_CP_INTERNAL_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-int begin_cancellation_point(void);
-void end_cancellation_point(int);
-
-#ifndef MODE_DBG
-#define BEGIN_CANCELLATION_POINT (void)0
-#define END_CANCELLATION_POINT   (void)0
-#else
-#define BEGIN_CANCELLATION_POINT \
-  do {                           \
-    int _Cp;                     \
-  _Cp = begin_cancellation_point()
-#define END_CANCELLATION_POINT \
-  end_cancellation_point(_Cp); \
-  }                            \
-  while (0)
-#endif
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_LIBC_CALLS_CP_INTERNAL_H_ */
@@ -31,7 +31,6 @@
 * @param mode is octal bits, e.g. 0644 usually
 * @return file descriptor, or -1 w/ errno
 * @see openat() for further documentation
- * @cancellationpoint
 * @asyncsignalsafe
 * @restartable
 * @threadsafe
@@ -31,11 +31,13 @@
 // Implements dup(), dup2(), dup3(), and F_DUPFD for Windows.
 textwindows int sys_dup_nt(int oldfd, int newfd, int flags, int start) {
  int64_t rc, proc, handle;
+  _unassert(oldfd >= 0);
+  _unassert(newfd >= -1);
  _unassert(!(flags & ~O_CLOEXEC));

  __fds_lock();

-  if (!__isfdopen(oldfd) || newfd < -1 ||
+  if (oldfd >= g_fds.n ||
      (g_fds.p[oldfd].kind != kFdFile && g_fds.p[oldfd].kind != kFdSocket &&
       g_fds.p[oldfd].kind != kFdConsole)) {
    __fds_unlock();
@@ -43,18 +45,27 @@ textwindows int sys_dup_nt(int oldfd, int newfd, int flags, int start) {
  }

  // allocate a new file descriptor
-  if (newfd == -1) {
-    if ((newfd = __reservefd_unlocked(start)) == -1) {
-      __fds_unlock();
-      return -1;
-    }
-  } else {
-    if (__ensurefds_unlocked(newfd) == -1) {
-      __fds_unlock();
-      return -1;
-    }
-    if (g_fds.p[newfd].kind) {
-      sys_close_nt(g_fds.p + newfd, newfd);
+  for (;;) {
+    if (newfd == -1) {
+      if ((newfd = __reservefd_unlocked(start)) == -1) {
+        __fds_unlock();
+        return -1;
+      }
+      break;
+    } else {
+      if (__ensurefds_unlocked(newfd) == -1) {
+        __fds_unlock();
+        return -1;
+      }
+      if (g_fds.p[newfd].kind) {
+        __fds_unlock();
+        close(newfd);
+        __fds_lock();
+      }
+      if (!g_fds.p[newfd].kind) {
+        g_fds.p[newfd].kind = kFdReserved;
+        break;
+      }
    }
  }

@@ -75,7 +86,7 @@ textwindows int sys_dup_nt(int oldfd, int newfd, int flags, int start) {
    }
    rc = newfd;
  } else {
-    __releasefd(newfd);
+    __releasefd_unlocked(newfd);
    rc = __winerr();
  }

@@ -16,10 +16,7 @@
 │ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR             │
 │ PERFORMANCE OF THIS SOFTWARE.                                                │
 ╚─────────────────────────────────────────────────────────────────────────────*/
-#include "libc/calls/blockcancel.internal.h"
-#include "libc/calls/blocksigs.internal.h"
 #include "libc/calls/calls.h"
-#include "libc/calls/execve-sysv.internal.h"
 #include "libc/calls/syscall-sysv.internal.h"
 #include "libc/dce.h"
 #include "libc/errno.h"
@@ -38,22 +35,16 @@ static bool CanExecute(const char *path) {
  return !sys_faccessat(AT_FDCWD, path, X_OK, 0);
 }

-bool IsAPEMagic(char buf[8]) {
-  return READ64LE(buf) == READ64LE("MZqFpD='") ||
-         READ64LE(buf) == READ64LE("JTqFpD='");
-}
-
 static bool IsApeBinary(const char *path) {
  int fd;
  char buf[8];
  bool res = false;
-  // TODO(jart): Should we block signals too?
-  BLOCK_CANCELLATIONS;
  if ((fd = sys_open(path, O_RDONLY, 0)) != -1) {
-    res = sys_read(fd, buf, 8) == 8 && IsAPEMagic(buf);
+    if (sys_read(fd, buf, 8) == 8 && READ64LE(buf) == READ64LE("MZqFpD='")) {
+      res = true;
+    }
    sys_close(fd);
  }
-  ALLOW_CANCELLATIONS;
  return res;
 }

@@ -70,41 +61,35 @@ static const char *Join(const char *a, const char *b, char buf[PATH_MAX]) {
 }

 int sys_execve(const char *prog, char *const argv[], char *const envp[]) {
+  int e;
  size_t i;
-  int e, rc;
  char *buf;
  char **shargs;
  const char *ape;
  e = errno;
  __sys_execve(prog, argv, envp);
-  if (errno == ENOEXEC) {
-    for (i = 0; argv[i];) ++i;
-    buf = alloca(PATH_MAX);
-    shargs = alloca((i + 4) * sizeof(char *));
-    if (IsApeBinary(prog) &&
-        (CanExecute((ape = "/usr/bin/ape")) ||
-         CanExecute((ape = Join(firstnonnull(getenv("TMPDIR"),
-                                             firstnonnull(getenv("HOME"), ".")),
-                                ".ape", buf))) ||
-         CanExecute(
-             (ape = Join(firstnonnull(getenv("HOME"), "."), ".ape", buf))))) {
-      shargs[0] = ape;
-      shargs[1] = "-";
-      shargs[2] = prog;
-      memcpy(shargs + 3, argv, (i + 1) * sizeof(char *));
-      errno = e;
-      rc = __sys_execve(shargs[0], shargs, envp);
-    } else if (CanExecute(prog)) {
-      shargs[0] = _PATH_BSHELL;
-      shargs[1] = prog;
-      memcpy(shargs + 2, argv + 1, i * sizeof(char *));
-      errno = e;
-      rc = __sys_execve(shargs[0], shargs, envp);
-    } else {
-      rc = enoexec();
-    }
+  if (errno != ENOEXEC) return -1;
+  for (i = 0; argv[i];) ++i;
+  buf = alloca(PATH_MAX);
+  shargs = alloca((i + 4) * sizeof(char *));
+  if (IsApeBinary(prog) &&
+      (CanExecute((ape = "/usr/bin/ape")) ||
+       CanExecute((ape = Join(firstnonnull(getenv("TMPDIR"),
+                                           firstnonnull(getenv("HOME"), ".")),
+                              ".ape", buf))) ||
+       CanExecute(
+           (ape = Join(firstnonnull(getenv("HOME"), "."), ".ape", buf))))) {
+    shargs[0] = ape;
+    shargs[1] = "-";
+    shargs[2] = prog;
+    memcpy(shargs + 3, argv, (i + 1) * sizeof(char *));
+  } else if (CanExecute(prog)) {
+    shargs[0] = _PATH_BSHELL;
+    shargs[1] = prog;
+    memcpy(shargs + 2, argv + 1, i * sizeof(char *));
  } else {
-    rc = -1;
+    return enoexec();
  }
-  return rc;
+  errno = e;
+  return __sys_execve(shargs[0], shargs, envp);
 }
@@ -1,10 +0,0 @@
-#ifndef COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_
-#define COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_
-#if !(__ASSEMBLER__ + __LINKER__ + 0)
-COSMOPOLITAN_C_START_
-
-bool IsAPEMagic(char[8]) _Hide;
-
-COSMOPOLITAN_C_END_
-#endif /* !(__ASSEMBLER__ + __LINKER__ + 0) */
-#endif /* COSMOPOLITAN_LIBC_CALLS_EXECVE_SYSV_H_ */
@@ -23,7 +23,6 @@
 #include "libc/calls/syscall-sysv.internal.h"
 #include "libc/dce.h"
 #include "libc/intrin/asan.internal.h"
-#include "libc/intrin/describeflags.internal.h"
 #include "libc/intrin/kprintf.h"
 #include "libc/intrin/likely.h"
 #include "libc/intrin/promises.internal.h"
@@ -32,7 +31,6 @@
 #include "libc/log/libfatal.internal.h"
 #include "libc/sysv/consts/o.h"
 #include "libc/sysv/errfuns.h"
-#include "libc/zipos/zipos.internal.h"

 /**
 * Replaces current process with program.
@@ -52,37 +50,39 @@
 * @vforksafe
 */
 int execve(const char *prog, char *const argv[], char *const envp[]) {
-  struct ZiposUri uri;
  int rc;
  size_t i;
  if (!prog || !argv || !envp ||
-      (IsAsan() && (!__asan_is_valid_str(prog) ||      //
-                    !__asan_is_valid_strlist(argv) ||  //
-                    !__asan_is_valid_strlist(envp)))) {
+      (IsAsan() &&
+       (!__asan_is_valid(prog, 1) || !__asan_is_valid_strlist(argv) ||
+        !__asan_is_valid_strlist(envp)))) {
    rc = efault();
  } else {
-    STRACE("execve(%#s, %s, %s) → ...", prog, DescribeStringList(argv),
-           DescribeStringList(envp));
-    rc = 0;
-    if (IsLinux() && __execpromises && _weaken(sys_pledge_linux)) {
-      rc = _weaken(sys_pledge_linux)(__execpromises, __pledge_mode);
-    }
-    if (!rc) {
-      if (_weaken(__zipos_parseuri) &&
-          (_weaken(__zipos_parseuri)(prog, &uri) != -1)) {
-        rc = _weaken(__zipos_open)(&uri, O_RDONLY | O_CLOEXEC, 0);
-        if (rc != -1) {
-          const int zipFD = rc;
-          strace_enabled(-1);
-          rc = fexecve(zipFD, argv, envp);
-          close(zipFD);
-          strace_enabled(+1);
-        }
-      } else if (!IsWindows()) {
-        rc = sys_execve(prog, argv, envp);
-      } else {
-        rc = sys_execve_nt(prog, argv, envp);
+#ifdef SYSDEBUG
+    if (UNLIKELY(__strace > 0)) {
+      kprintf(STRACE_PROLOGUE "execve(%#s, {", prog);
+      for (i = 0; argv[i]; ++i) {
+        if (i) kprintf(", ");
+        kprintf("%#s", argv[i]);
      }
+      kprintf("}, {");
+      for (i = 0; envp[i]; ++i) {
+        if (i) kprintf(", ");
+        kprintf("%#s", envp[i]);
+      }
+      kprintf("})\n");
+    }
+#endif
+    if (!IsWindows()) {
+      rc = 0;
+      if (IsLinux() && __execpromises && _weaken(sys_pledge_linux)) {
+        rc = _weaken(sys_pledge_linux)(__execpromises, __pledge_mode);
+      }
+      if (!rc) {
+        rc = sys_execve(prog, argv, envp);
+      }
+    } else {
+      rc = sys_execve_nt(prog, argv, envp);
    }
  }
  STRACE("execve(%#s) failed %d% m", prog, rc);