mirror of
https://github.com/jart/cosmopolitan.git
synced 2025-02-01 03:53:33 +00:00
3265324e00
This change fixes #496 where ASAN spotted a race condition that could happen in multithreaded programs, with more than OPEN_MAX descriptors when using ZipOS or Windows NT, which require tracking open file info and this change fixes that table so it never relocates, thus allowing us to continue to enjoy the benefits of avoiding locks while reading.
196 lines
6.3 KiB
Makefile
196 lines
6.3 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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PKGS += LIBC_INTRIN
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LIBC_INTRIN_ARTIFACTS += LIBC_INTRIN_A
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LIBC_INTRIN = $(LIBC_INTRIN_A_DEPS) $(LIBC_INTRIN_A)
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LIBC_INTRIN_A = o/$(MODE)/libc/intrin/intrin.a
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LIBC_INTRIN_A_HDRS = $(filter %.h,$(LIBC_INTRIN_A_FILES))
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LIBC_INTRIN_A_SRCS_S = $(filter %.S,$(LIBC_INTRIN_A_FILES))
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LIBC_INTRIN_A_SRCS_C = $(filter %.c,$(LIBC_INTRIN_A_FILES))
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LIBC_INTRIN_A_SRCS = $(LIBC_INTRIN_A_SRCS_S) $(LIBC_INTRIN_A_SRCS_C)
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LIBC_INTRIN_A_CHECKS = $(LIBC_INTRIN_A).pkg
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LIBC_INTRIN_A_FILES := \
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$(wildcard libc/intrin/*)
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LIBC_INTRIN_A_OBJS = \
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$(LIBC_INTRIN_A_SRCS_S:%.S=o/$(MODE)/%.o) \
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$(LIBC_INTRIN_A_SRCS_C:%.c=o/$(MODE)/%.o)
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LIBC_INTRIN_A_CHECKS = \
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$(LIBC_INTRIN_A).pkg \
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$(LIBC_INTRIN_A_HDRS:%=o/$(MODE)/%.ok)
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LIBC_INTRIN_A_DIRECTDEPS = \
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LIBC_STUBS \
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LIBC_SYSV \
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LIBC_SYSV_CALLS \
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LIBC_NEXGEN32E \
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LIBC_NT_KERNEL32 \
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LIBC_NT_WS2_32
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LIBC_INTRIN_A_DEPS := \
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$(call uniq,$(foreach x,$(LIBC_INTRIN_A_DIRECTDEPS),$($(x))))
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$(LIBC_INTRIN_A): \
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libc/intrin/ \
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$(LIBC_INTRIN_A).pkg \
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$(LIBC_INTRIN_A_OBJS)
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$(LIBC_INTRIN_A).pkg: \
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$(LIBC_INTRIN_A_OBJS) \
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$(foreach x,$(LIBC_INTRIN_A_DIRECTDEPS),$($(x)_A).pkg)
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# we can't use asan because:
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# asan guard pages haven't been allocated yet
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o/$(MODE)/libc/intrin/directmap.o \
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o/$(MODE)/libc/intrin/directmap-nt.o: private \
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OVERRIDE_COPTS += \
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-ffreestanding \
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-fno-sanitize=address
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# we want small code size because:
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# to keep .text.head under 4096 bytes
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o/$(MODE)/libc/intrin/mman.greg.o: private \
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OVERRIDE_COPTS += \
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-Os
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# we can't use asan and ubsan because:
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# this is asan and ubsan
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o/$(MODE)/libc/intrin/asan.o \
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o/$(MODE)/libc/intrin/ubsan.o: private \
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OVERRIDE_CFLAGS += \
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-fno-sanitize=all \
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-fno-stack-protector
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o/$(MODE)/libc/intrin/asan.o: private \
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OVERRIDE_CFLAGS += \
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-O2 \
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-finline \
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-finline-functions
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# we can't use compiler magic because:
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# kprintf() is mission critical to error reporting
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o/$(MODE)/libc/intrin/getmagnumstr.greg.o \
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o/$(MODE)/libc/intrin/strerrno.greg.o \
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o/$(MODE)/libc/intrin/strerrdoc.greg.o \
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o/$(MODE)/libc/intrin/strerror_wr.greg.o \
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o/$(MODE)/libc/intrin/kprintf.greg.o: private \
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OVERRIDE_CFLAGS += \
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-fpie \
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-fwrapv \
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-x-no-pg \
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-mno-fentry \
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-ffreestanding \
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-fno-sanitize=all \
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-fno-stack-protector
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# TODO(jart): Do we really need these?
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# synchronization primitives are intended to be magic free
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o/$(MODE)/libc/intrin/futex_wait.o \
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o/$(MODE)/libc/intrin/futex_wake.o \
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o/$(MODE)/libc/intrin/gettid.greg.o \
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o/$(MODE)/libc/intrin/sys_gettid.greg.o \
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o/$(MODE)/libc/intrin/pthread_mutex_lock.o \
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o/$(MODE)/libc/intrin/pthread_mutex_wait.o \
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o/$(MODE)/libc/intrin/pthread_mutex_wake.o \
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o/$(MODE)/libc/intrin/pthread_mutex_unlock.o \
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o/$(MODE)/libc/intrin/pthread_mutex_trylock.o \
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o/$(MODE)/libc/intrin/_trylock_debug_4.o \
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o/$(MODE)/libc/intrin/_spinlock_debug_4.o: private \
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OVERRIDE_CFLAGS += \
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-fwrapv \
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-x-no-pg \
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-mno-fentry \
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-ffreestanding \
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-fno-sanitize=all \
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-mgeneral-regs-only \
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-fno-stack-protector
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# we can't use asan because:
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# global gone could be raised
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o/$(MODE)/libc/intrin/exit.o \
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o/$(MODE)/libc/intrin/restorewintty.o: private \
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OVERRIDE_CFLAGS += \
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-fno-sanitize=all
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# we can't use asan because:
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# sys_mmap() calls these which sets up shadow memory
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o/$(MODE)/libc/intrin/describeflags.o \
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o/$(MODE)/libc/intrin/describeframe.o \
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o/$(MODE)/libc/intrin/describemapflags.o \
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o/$(MODE)/libc/intrin/describeprotflags.o: private \
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OVERRIDE_CFLAGS += \
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-fno-sanitize=address
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o/$(MODE)/libc/intrin/exit1.greg.o \
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o/$(MODE)/libc/intrin/getenv.greg.o \
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o/$(MODE)/libc/intrin/wsarecv.o \
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o/$(MODE)/libc/intrin/wsarecvfrom.o \
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o/$(MODE)/libc/intrin/createfile.o \
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o/$(MODE)/libc/intrin/reopenfile.o \
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o/$(MODE)/libc/intrin/deletefile.o \
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o/$(MODE)/libc/intrin/createpipe.o \
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o/$(MODE)/libc/intrin/closehandle.o \
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o/$(MODE)/libc/intrin/openprocess.o \
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o/$(MODE)/libc/intrin/createthread.o \
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o/$(MODE)/libc/intrin/findclose.o \
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o/$(MODE)/libc/intrin/findnextfile.o \
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o/$(MODE)/libc/intrin/createprocess.o \
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o/$(MODE)/libc/intrin/findfirstfile.o \
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o/$(MODE)/libc/intrin/removedirectory.o \
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o/$(MODE)/libc/intrin/createsymboliclink.o \
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o/$(MODE)/libc/intrin/createnamedpipe.o \
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o/$(MODE)/libc/intrin/unmapviewoffile.o \
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o/$(MODE)/libc/intrin/virtualprotect.o \
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o/$(MODE)/libc/intrin/flushviewoffile.o \
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o/$(MODE)/libc/intrin/createdirectory.o \
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o/$(MODE)/libc/intrin/flushfilebuffers.o \
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o/$(MODE)/libc/intrin/terminateprocess.o \
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o/$(MODE)/libc/intrin/getfileattributes.o \
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o/$(MODE)/libc/intrin/getexitcodeprocess.o \
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o/$(MODE)/libc/intrin/waitforsingleobject.o \
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o/$(MODE)/libc/intrin/setcurrentdirectory.o \
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o/$(MODE)/libc/intrin/mapviewoffileex.o \
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o/$(MODE)/libc/intrin/movefileex.o \
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o/$(MODE)/libc/intrin/mapviewoffileexnuma.o \
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o/$(MODE)/libc/intrin/createfilemapping.o \
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o/$(MODE)/libc/intrin/createfilemappingnuma.o \
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o/$(MODE)/libc/intrin/waitformultipleobjects.o \
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o/$(MODE)/libc/intrin/generateconsolectrlevent.o \
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o/$(MODE)/libc/intrin/wsawaitformultipleevents.o: private\
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OVERRIDE_CFLAGS += \
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-Os \
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-fwrapv \
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-ffreestanding \
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-fno-stack-protector \
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-fno-sanitize=all
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o//libc/intrin/memmove.o: private \
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OVERRIDE_CFLAGS += \
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-fno-toplevel-reorder
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o//libc/intrin/bzero.o \
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o//libc/intrin/memcmp.o \
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o//libc/intrin/memset.o \
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o//libc/intrin/memmove.o: private \
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OVERRIDE_CFLAGS += \
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-O2 -finline
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o/$(MODE)/libc/intrin/bzero.o \
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o/$(MODE)/libc/intrin/memcmp.o \
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o/$(MODE)/libc/intrin/memmove.o: private \
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OVERRIDE_CFLAGS += \
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-fpie
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LIBC_INTRIN_LIBS = $(foreach x,$(LIBC_INTRIN_ARTIFACTS),$($(x)))
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LIBC_INTRIN_HDRS = $(foreach x,$(LIBC_INTRIN_ARTIFACTS),$($(x)_HDRS))
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LIBC_INTRIN_SRCS = $(foreach x,$(LIBC_INTRIN_ARTIFACTS),$($(x)_SRCS))
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LIBC_INTRIN_CHECKS = $(foreach x,$(LIBC_INTRIN_ARTIFACTS),$($(x)_CHECKS))
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LIBC_INTRIN_OBJS = $(foreach x,$(LIBC_INTRIN_ARTIFACTS),$($(x)_OBJS))
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$(LIBC_INTRIN_OBJS): $(BUILD_FILES) libc/intrin/intrin.mk
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.PHONY: o/$(MODE)/libc/intrin
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o/$(MODE)/libc/intrin: $(LIBC_INTRIN_CHECKS)
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