mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
40eb3b9d5d
This change (1) upgrades to OpenBSD's newer kernel ABIs, and (2)
modifies APE to have a read-only data segment. Doing this required
creating APE Loader v1.1, which is backwards and forwards compatible
with the previous version.
If you've run the following commands in the past to install your APE
Loader systemwide, then you need to run them again. Ad-hoc installations
shouldn't be impacted. It's also recommended that APE binaries be remade
after upgrading, since they embed old versions of the APE Loader.
ape/apeuninstall.sh
ape/apeinstall.sh
This change does more than just fix OpenBSD. The new loader is smarter
and more reliable. We're now able create much tinier ELF and Mach-O data
structures than we could before. Both APE Loader and execvpe() will now
normalize ambiguous argv[0] resolution the same way as the UNIX shell.
Badness with TLS linkage has been solved.
Fixes #826
224 lines
6.7 KiB
Makefile
224 lines
6.7 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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# SYNOPSIS
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#
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# System Call Compatibility Layer
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#
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# DESCRIPTION
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#
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# This package exports a familiar system call interface that works
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# across platforms.
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PKGS += LIBC_CALLS
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LIBC_CALLS_ARTIFACTS += LIBC_CALLS_A
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LIBC_CALLS = $(LIBC_CALLS_A_DEPS) $(LIBC_CALLS_A)
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LIBC_CALLS_A = o/$(MODE)/libc/calls/syscalls.a
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LIBC_CALLS_A_FILES := \
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$(wildcard libc/calls/typedef/*) \
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$(wildcard libc/calls/struct/*) \
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$(wildcard libc/calls/*)
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LIBC_CALLS_A_HDRS = $(filter %.h,$(LIBC_CALLS_A_FILES))
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LIBC_CALLS_A_INCS = $(filter %.inc,$(LIBC_CALLS_A_FILES))
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LIBC_CALLS_A_SRCS_S = $(filter %.S,$(LIBC_CALLS_A_FILES))
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LIBC_CALLS_A_SRCS_C = $(filter %.c,$(LIBC_CALLS_A_FILES))
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LIBC_CALLS_A_SRCS = \
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$(LIBC_CALLS_A_SRCS_S) \
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$(LIBC_CALLS_A_SRCS_C)
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LIBC_CALLS_A_OBJS = \
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$(LIBC_CALLS_A_SRCS_S:%.S=o/$(MODE)/%.o) \
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$(LIBC_CALLS_A_SRCS_C:%.c=o/$(MODE)/%.o)
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LIBC_CALLS_A_CHECKS = \
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$(LIBC_CALLS_A).pkg \
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$(LIBC_CALLS_A_HDRS:%=o/$(MODE)/%.ok)
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LIBC_CALLS_A_DIRECTDEPS = \
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LIBC_FMT \
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LIBC_INTRIN \
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LIBC_NEXGEN32E \
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LIBC_NT_ADVAPI32 \
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LIBC_NT_IPHLPAPI \
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LIBC_NT_KERNEL32 \
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LIBC_NT_NTDLL \
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LIBC_NT_PDH \
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LIBC_NT_POWRPROF \
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LIBC_NT_PSAPI \
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LIBC_NT_WS2_32 \
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LIBC_STR \
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LIBC_SYSV \
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LIBC_SYSV_CALLS \
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THIRD_PARTY_COMPILER_RT
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LIBC_CALLS_A_DEPS := \
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$(call uniq,$(foreach x,$(LIBC_CALLS_A_DIRECTDEPS),$($(x))))
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$(LIBC_CALLS_A): \
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libc/calls/ \
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$(LIBC_CALLS_A).pkg \
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$(LIBC_CALLS_A_OBJS)
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$(LIBC_CALLS_A).pkg: \
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$(LIBC_CALLS_A_OBJS) \
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$(foreach x,$(LIBC_CALLS_A_DIRECTDEPS),$($(x)_A).pkg)
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# we can't use asan because:
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# siginfo_t memory is owned by kernels
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o/$(MODE)/libc/calls/siginfo2cosmo.o: private \
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COPTS += \
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-ffreestanding \
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-fno-sanitize=address
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# we can't use asan because:
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# ucontext_t memory is owned by xnu kernel
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o/$(MODE)/libc/calls/sigenter-xnu.o: private \
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COPTS += \
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-ffreestanding \
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-fno-sanitize=address
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# we can't use asan because:
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# vdso memory is owned by linux kernel
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o/$(MODE)/libc/calls/vdsofunc.greg.o: private \
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COPTS += \
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-ffreestanding \
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-fno-sanitize=address
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# we can't use asan because:
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# ntspawn allocates 128kb of heap memory via win32
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o/$(MODE)/libc/calls/ntspawn.o \
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o/$(MODE)/libc/calls/mkntcmdline.o \
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o/$(MODE)/libc/calls/mkntenvblock.o: private \
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COPTS += \
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-ffreestanding \
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-fno-sanitize=address
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# we can't use sanitizers because:
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# windows owns the data structure
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o/$(MODE)/libc/calls/wincrash.o \
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o/$(MODE)/libc/calls/ntcontext2linux.o: private \
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COPTS += \
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-fno-sanitize=all
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ifneq ($(ARCH), aarch64)
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# we always want -O3 because:
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# it makes the code size smaller too
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# we need -mstringop-strategy=loop because:
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# privileged code might generate memcpy call
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o/$(MODE)/libc/calls/termios2host.o \
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o/$(MODE)/libc/calls/sigenter-freebsd.o \
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o/$(MODE)/libc/calls/sigenter-netbsd.o \
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o/$(MODE)/libc/calls/sigenter-openbsd.o \
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o/$(MODE)/libc/calls/sigenter-xnu.o \
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o/$(MODE)/libc/calls/ntcontext2linux.o: private \
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COPTS += \
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-O3 \
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-mstringop-strategy=loop
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endif
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# we must disable static stack safety because:
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# these functions use alloca(n)
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o/$(MODE)/libc/calls/execl.o \
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o/$(MODE)/libc/calls/execle.o \
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o/$(MODE)/libc/calls/execlp.o \
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o/$(MODE)/libc/calls/execvpe.o \
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o/$(MODE)/libc/calls/statfs.o \
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o/$(MODE)/libc/calls/fstatfs.o \
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o/$(MODE)/libc/calls/execve-sysv.o \
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o/$(MODE)/libc/calls/readlinkat-nt.o \
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o/$(MODE)/libc/calls/execve-nt.greg.o \
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o/$(MODE)/libc/calls/mkntenvblock.o: private \
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CPPFLAGS += \
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-DSTACK_FRAME_UNLIMITED
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# we must segregate codegen because:
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# file contains multiple independently linkable apis
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o/$(MODE)/libc/calls/ioctl-siocgifconf.o \
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o/$(MODE)/libc/calls/ioctl-siocgifconf-nt.o: private \
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COPTS += \
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-ffunction-sections \
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-fdata-sections
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# we always want -Os because:
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# va_arg codegen is very bloated in default mode
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o//libc/calls/open.o \
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o//libc/calls/openat.o \
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o//libc/calls/prctl.o \
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o//libc/calls/ioctl.o \
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o//libc/calls/ioctl_default.o \
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o//libc/calls/ioctl_fioclex-nt.o \
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o//libc/calls/ioctl_fioclex.o \
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o//libc/calls/ioctl_siocgifconf-nt.o \
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o//libc/calls/ioctl_siocgifconf.o \
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o//libc/calls/fcntl.o: private \
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CFLAGS += \
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-Os
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# we always want -Os because:
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# it's early runtime mandatory and quite huge without it
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o//libc/calls/getcwd.greg.o \
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o//libc/calls/getcwd-nt.greg.o \
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o//libc/calls/getcwd-xnu.greg.o \
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o//libc/calls/statfs2cosmo.o: private \
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CFLAGS += \
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-Os
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# we always want -O2 because:
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# division is expensive if not optimized
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o/$(MODE)/libc/calls/clock.o \
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o/$(MODE)/libc/calls/timespec_tomillis.o \
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o/$(MODE)/libc/calls/timespec_tomicros.o \
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o/$(MODE)/libc/calls/timespec_totimeval.o \
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o/$(MODE)/libc/calls/timespec_fromnanos.o \
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o/$(MODE)/libc/calls/timespec_frommillis.o \
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o/$(MODE)/libc/calls/timespec_frommicros.o \
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o/$(MODE)/libc/calls/timeval_tomillis.o \
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o/$(MODE)/libc/calls/timeval_frommillis.o \
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o/$(MODE)/libc/calls/timeval_frommicros.o: private \
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CFLAGS += \
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-O2
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# privileged functions
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o/$(MODE)/libc/calls/sigenter-freebsd.o \
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o/$(MODE)/libc/calls/sigenter-netbsd.o \
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o/$(MODE)/libc/calls/sigenter-openbsd.o \
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o/$(MODE)/libc/calls/sigenter-linux.o \
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o/$(MODE)/libc/calls/sigenter-xnu.o \
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o/$(MODE)/libc/calls/pledge-linux.o \
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o/$(MODE)/libc/calls/siginfo2cosmo.o: private \
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CFLAGS += \
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-ffreestanding \
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-fno-sanitize=all
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o/$(MODE)/libc/calls/pledge-linux.o \
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o/$(MODE)/libc/calls/unveil.o: private \
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CFLAGS += \
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-DSTACK_FRAME_UNLIMITED
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ifeq ($(ARCH), aarch64)
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o/$(MODE)/libc/calls/sigaction.o: private CFLAGS += -mcmodel=large
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o/$(MODE)/libc/calls/getloadavg-nt.o: private CFLAGS += -ffreestanding
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endif
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# we want -Os because:
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# it makes a big difference
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# we need pic because:
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# so it can be an LD_PRELOAD payload
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o/$(MODE)/libc/calls/pledge-linux.o: private \
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CFLAGS += \
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-Os \
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-fPIC
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LIBC_CALLS_LIBS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)))
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LIBC_CALLS_SRCS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_SRCS))
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LIBC_CALLS_HDRS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_HDRS))
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LIBC_CALLS_INCS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_INCS))
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LIBC_CALLS_BINS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_BINS))
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LIBC_CALLS_CHECKS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_CHECKS))
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LIBC_CALLS_OBJS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_OBJS))
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LIBC_CALLS_TESTS = $(foreach x,$(LIBC_CALLS_ARTIFACTS),$($(x)_TESTS))
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.PHONY: o/$(MODE)/libc/calls
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o/$(MODE)/libc/calls: $(LIBC_CALLS_CHECKS)
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