1 # SPDX-License-Identifier: GPL-2.0
2 # Copyright (C) 2020 ARM Limited
3
4 # preserve CC value from top level Makefile
5 ifeq ($(CC),cc)
6 CC := $(CROSS_COMPILE)gcc
7 endif
8
9 CFLAGS += -mbranch-protection=pac-ret
10 # check if the compiler supports ARMv8.3 and b
11 pauth_cc_support := $(shell if ($(CC) $(CFLAGS
12
13 ifeq ($(pauth_cc_support),1)
14 TEST_GEN_PROGS := pac
15 TEST_GEN_FILES := pac_corruptor.o helper.o
16 TEST_GEN_PROGS_EXTENDED := exec_target
17 endif
18
19 include ../../lib.mk
20
21 ifeq ($(pauth_cc_support),1)
22 # pac* and aut* instructions are not available
23 # ARMv8.3. Therefore target ARMv8.3 wherever t
24 $(OUTPUT)/pac_corruptor.o: pac_corruptor.S
25 $(CC) -c $^ -o $@ $(CFLAGS) -march=arm
26
27 $(OUTPUT)/helper.o: helper.c
28 $(CC) -c $^ -o $@ $(CFLAGS) -march=arm
29
30 # when -mbranch-protection is enabled and the
31 # greater, gcc emits pac* instructions which a
32 # preventing the tests from occurring at all.
33 # run on earlier targets and print a meaningfu
34 $(OUTPUT)/exec_target: exec_target.c $(OUTPUT)
35 $(CC) $^ -o $@ $(CFLAGS) -march=armv8.
36
37 $(OUTPUT)/pac: pac.c $(OUTPUT)/pac_corruptor.o
38 $(CC) $^ -o $@ $(CFLAGS) -march=armv8.
39 endif
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