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https://github.com/jart/cosmopolitan.git
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db0d8dd806
The "no modify self" variant of Actually Portable Executable is now
supported on all platforms. If you use `$(APE_NO_MODIFY_SELF)` then
ld.bfd will embed a 4096 byte ELF binary and a 4096 byte Macho file
which are installed on the fly to ${TMPDIR:-/tmp}, which enables us
launch the executable, without needing to copy the whole executable
To prevent it from copying a tiny executable to your temp directory
you need to install the `ape` command (renamed from ape-loader), to
a system path. For example:
# FreeBSD / NetBSD / OpenBSD
make -j8 o//ape/ape
cp o//ape/ape /usr/bin/ape
# Mac OS
# make -j8 o//ape/ape.macho
curl https://justine.lol/ape.macho >/usr/bin/ape
chmod +x /usr/bin/ape
On Linux you can get even more performance with the new binfmt_misc
support which makes launching non-modifying APE binaries as fast as
launching ELF executables. Running the following command:
# Linux
ape/apeinstall.sh
Will copy APE loader to /usr/bin/ape and register with binfmt_misc
Lastly, this change also fixes a really interesting race condition
with OpenBSD thread joining.
80 lines
2.4 KiB
Makefile
80 lines
2.4 KiB
Makefile
#-*-mode:makefile-gmake;indent-tabs-mode:t;tab-width:8;coding:utf-8-*-┐
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#───vi: set et ft=make ts=8 tw=8 fenc=utf-8 :vi───────────────────────┘
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#
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# OVERVIEW
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#
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# αcτµαlly pδrταblε εxεcµταblε
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#
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# DESCRIPTION
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#
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# This file defines the libraries, runtimes, and build rules needed to
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# create executables from your Linux workstation that'll run anywhere.
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# Loading this package will make certain systemic modifications to the
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# build like turning off the System V "Red Zone" optimization, because
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# αcτµαlly pδrταblε εxεcµταblεs need to be able to run in kernelspace.
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PKGS += APE
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APE = o/$(MODE)/ape/ape.o \
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o/$(MODE)/ape/ape.lds
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APE_NO_MODIFY_SELF = \
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o/$(MODE)/ape/ape.lds \
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o/$(MODE)/ape/ape-no-modify-self.o
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APELINK = \
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$(COMPILE) \
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-ALINK.ape \
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$(LINK) \
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$(LINKARGS) \
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$(OUTPUT_OPTION)
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APE_FILES := $(wildcard ape/*.*)
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APE_HDRS = $(filter %.h,$(APE_FILES))
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APE_INCS = $(filter %.inc,$(APE_FILES))
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APE_SRCS_C = ape/loader.c
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APE_SRCS_S = $(filter %.S,$(APE_FILES))
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APE_SRCS = $(APE_SRCS_C) $(APE_SRCS_S)
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APE_OBJS = $(APE_SRCS_S:%.S=o/$(MODE)/%.o)
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APE_CHECKS = $(APE_HDRS:%=o/%.ok)
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o/$(MODE)/ape/ape.lds: \
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ape/ape.lds \
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ape/macros.internal.h \
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libc/dce.h \
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libc/zip.h
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o/ape/idata.inc: \
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ape/idata.internal.h \
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ape/relocations.h
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o/$(MODE)/ape/ape-no-modify-self.o: \
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ape/ape.S \
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o/$(MODE)/ape/ape \
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o/$(MODE)/ape/ape.macho
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@$(COMPILE) -AOBJECTIFY.S $(OBJECTIFY.S) $(OUTPUT_OPTION) -DAPE_LOADER="\"o/$(MODE)/ape/ape\"" -DAPE_LOADER_MACHO="\"o/$(MODE)/ape/ape.macho\"" $<
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o/$(MODE)/ape/loader.o: ape/loader.c
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@$(COMPILE) -AOBJECTIFY.c $(CC) -DNDEBUG -iquote. -Wall -Wextra -fpie -Os -g -ffreestanding -mno-red-zone -fno-ident -fno-gnu-unique -c $(OUTPUT_OPTION) $<
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o/$(MODE)/ape/loader-gcc.asm: ape/loader.c
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@$(COMPILE) -AOBJECTIFY.c $(CC) -DNDEBUG -iquote. -Wall -Wextra -fpie -Os -g -ffreestanding -mno-red-zone -fno-ident -fno-gnu-unique -c -S $(OUTPUT_OPTION) $<
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o/$(MODE)/ape/ape: \
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o/$(MODE)/ape/loader.o \
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o/$(MODE)/ape/loader-elf.o \
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ape/loader.lds
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@$(ELFLINK) -s -z max-page-size=0x10
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o/$(MODE)/ape/ape.macho: \
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o/$(MODE)/ape/loader.o \
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o/$(MODE)/ape/loader-macho.o \
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ape/loader-macho.lds
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@$(ELFLINK) -s -z max-page-size=0x10
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.PHONY: o/$(MODE)/ape
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o/$(MODE)/ape: $(APE) \
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$(APE_CHECKS) \
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o/$(MODE)/ape/ape \
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o/$(MODE)/ape/ape.macho \
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o/$(MODE)/ape/ape-no-modify-self.o
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