57b7a6110e
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
61 lines
2.2 KiB
Makefile
61 lines
2.2 KiB
Makefile
# arm64 specific configs
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libc_common_src_files_arm64 := \
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bionic/memrchr.c \
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bionic/strrchr.cpp \
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upstream-freebsd/lib/libc/string/wcscat.c \
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upstream-freebsd/lib/libc/string/wcschr.c \
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upstream-freebsd/lib/libc/string/wcscmp.c \
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upstream-freebsd/lib/libc/string/wcscpy.c \
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upstream-freebsd/lib/libc/string/wcslen.c \
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upstream-freebsd/lib/libc/string/wcsrchr.c \
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upstream-freebsd/lib/libc/string/wmemcmp.c \
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upstream-openbsd/lib/libc/string/stpncpy.c \
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upstream-openbsd/lib/libc/string/strcat.c \
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upstream-openbsd/lib/libc/string/strlcat.c \
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upstream-openbsd/lib/libc/string/strlcpy.c \
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upstream-openbsd/lib/libc/string/strncat.c \
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upstream-openbsd/lib/libc/string/strncpy.c \
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# Fortify implementations of libc functions.
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libc_common_src_files_arm64 += \
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bionic/__memcpy_chk.cpp \
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bionic/__memset_chk.cpp \
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bionic/__strcpy_chk.cpp \
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bionic/__strcat_chk.cpp \
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##########################################
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### CPU specific source files
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libc_bionic_src_files_arm64 := \
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arch-arm64/bionic/__bionic_clone.S \
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arch-arm64/bionic/_exit_with_stack_teardown.S \
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arch-arm64/bionic/__rt_sigreturn.S \
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arch-arm64/bionic/_setjmp.S \
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arch-arm64/bionic/setjmp.S \
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arch-arm64/bionic/__set_tls.c \
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arch-arm64/bionic/sigsetjmp.S \
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arch-arm64/bionic/syscall.S \
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arch-arm64/bionic/vfork.S \
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libc_crt_target_cflags_arm64 := \
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-I$(LOCAL_PATH)/arch-arm64/include
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libc_crt_target_crtbegin_file_arm64 := \
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$(LOCAL_PATH)/arch-arm64/bionic/crtbegin.c
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libc_crt_target_crtbegin_so_file_arm64 := \
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$(LOCAL_PATH)/arch-common/bionic/crtbegin_so.c
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## CPU variant specific source files
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ifeq ($(strip $(TARGET_CPU_VARIANT)),)
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$(warning TARGET_ARCH is arm64, but TARGET_CPU_VARIANT is not defined)
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endif
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cpu_variant_mk := $(LOCAL_PATH)/arch-arm64/$(TARGET_CPU_VARIANT)/$(TARGET_CPU_VARIANT).mk
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ifeq ($(wildcard $(cpu_variant_mk)),)
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$(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.")
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endif
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include $(cpu_variant_mk)
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libc_common_additional_dependencies += $(cpu_variank_mk)
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cpu_variant_mk :=
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