1. 根目录:
2. arch
3. arm
4. crypto
5. Makefile

#
# Arch-specific CryptoAPI modules.
#

obj-$(CONFIG_CRYPTO_AES_ARM) += aes-arm.o
obj-$(CONFIG_CRYPTO_AES_ARM_BS) += aes-arm-bs.o
obj-$(CONFIG_CRYPTO_SHA1_ARM) += sha1-arm.o
obj-$(CONFIG_CRYPTO_SHA1_ARM_NEON) += sha1-arm-neon.o
obj-$(CONFIG_CRYPTO_SHA256_ARM) += sha256-arm.o
obj-$(CONFIG_CRYPTO_SHA512_ARM_NEON) += sha512-arm-neon.o

aes-arm-y	:= aes-armv4.o aes_glue.o
aes-arm-bs-y	:= aesbs-core.o aesbs-glue.o
sha1-arm-y	:= sha1-armv4-large.o sha1_glue.o
sha1-arm-neon-y	:= sha1-armv7-neon.o sha1_neon_glue.o
sha256-arm-neon-$(CONFIG_KERNEL_MODE_NEON) := sha256_neon_glue.o
sha256-arm-y	:= sha256-core.o sha256_glue.o $(sha256-arm-neon-y)
sha512-arm-neon-y := sha512-armv7-neon.o sha512_neon_glue.o

quiet_cmd_perl = PERL    $@
      cmd_perl = $(PERL) $(<) > $(@)

$(src)/aesbs-core.S_shipped: $(src)/bsaes-armv7.pl
	$(call cmd,perl)

$(src)/sha256-core.S_shipped: $(src)/sha256-armv4.pl
	$(call cmd,perl)

.PRECIOUS: $(obj)/aesbs-core.S $(obj)/sha256-core.S