bionic/libc/arch-arm64/arm64.mk
Elliott Hughes 57b7a6110e Fix pthread_getattr_np for the main thread.
On most architectures the kernel subtracts a random offset to the stack
pointer in create_elf_tables by calling arch_align_stack before writing
the auxval table and so on. On all but x86 this doesn't cause a problem
because the random offset is less than a page, but on x86 it's up to two
pages. This means that our old technique of rounding the stack pointer
doesn't work. (Our old implementation of that technique was wrong too.)

It's also incorrect to assume that the main thread's stack base and size
are constant. Likewise to assume that the main thread has a guard page.
The main thread is not like other threads.

This patch switches to reading /proc/self/maps (and checking RLIMIT_STACK)
whenever we're asked.

Bug: 17111575
Signed-off-by: Fengwei Yin <fengwei.yin@intel.com>
Change-Id: I1d4dbffe7bc7bda1d353c3a295dbf68d29f63158
2014-08-26 10:36:38 -07:00

62 lines
2.2 KiB
Makefile

# arm64 specific configs
libc_common_src_files_arm64 := \
bionic/memrchr.c \
bionic/strrchr.cpp \
upstream-freebsd/lib/libc/string/wcscat.c \
upstream-freebsd/lib/libc/string/wcschr.c \
upstream-freebsd/lib/libc/string/wcscmp.c \
upstream-freebsd/lib/libc/string/wcscpy.c \
upstream-freebsd/lib/libc/string/wcslen.c \
upstream-freebsd/lib/libc/string/wcsrchr.c \
upstream-freebsd/lib/libc/string/wmemcmp.c \
upstream-openbsd/lib/libc/string/stpncpy.c \
upstream-openbsd/lib/libc/string/strcat.c \
upstream-openbsd/lib/libc/string/strlcat.c \
upstream-openbsd/lib/libc/string/strlcpy.c \
upstream-openbsd/lib/libc/string/strncat.c \
upstream-openbsd/lib/libc/string/strncpy.c \
# Fortify implementations of libc functions.
libc_common_src_files_arm64 += \
bionic/__memcpy_chk.cpp \
bionic/__memset_chk.cpp \
bionic/__strcpy_chk.cpp \
bionic/__strcat_chk.cpp \
##########################################
### CPU specific source files
libc_bionic_src_files_arm64 := \
arch-arm64/bionic/__bionic_clone.S \
arch-arm64/bionic/_exit_with_stack_teardown.S \
arch-arm64/bionic/__rt_sigreturn.S \
arch-arm64/bionic/_setjmp.S \
arch-arm64/bionic/setjmp.S \
arch-arm64/bionic/__set_tls.c \
arch-arm64/bionic/sigsetjmp.S \
arch-arm64/bionic/syscall.S \
arch-arm64/bionic/vfork.S \
libc_crt_target_cflags_arm64 := \
-I$(LOCAL_PATH)/arch-arm64/include
libc_crt_target_crtbegin_file_arm64 := \
$(LOCAL_PATH)/arch-arm64/bionic/crtbegin.c
libc_crt_target_crtbegin_so_file_arm64 := \
$(LOCAL_PATH)/arch-common/bionic/crtbegin_so.c
## CPU variant specific source files
ifeq ($(strip $(TARGET_CPU_VARIANT)),)
$(warning TARGET_ARCH is arm64, but TARGET_CPU_VARIANT is not defined)
endif
cpu_variant_mk := $(LOCAL_PATH)/arch-arm64/$(TARGET_CPU_VARIANT)/$(TARGET_CPU_VARIANT).mk
ifeq ($(wildcard $(cpu_variant_mk)),)
$(error "TARGET_CPU_VARIANT not set or set to an unknown value. Possible values are generic, generic-neon, denver64. Use generic for devices that do not have a CPU similar to any of the supported cpu variants.")
endif
include $(cpu_variant_mk)
libc_common_additional_dependencies += $(cpu_variank_mk)
cpu_variant_mk :=