1 # SPDX-License-Identifier: GPL-2.0
2 # Makefile for the Hexagon arch
3
4 KBUILD_DEFCONFIG = comet_defconfig
5
6 # Do not use GP-relative jumps
7 KBUILD_CFLAGS += -G0
8 LDFLAGS_vmlinux += -G0
9
10 # Do not use single-byte enums; these will overflow.
11 KBUILD_CFLAGS += -fno-short-enums
12
13 # We must use long-calls:
14 KBUILD_CFLAGS += -mlong-calls
15
16 # Modules must use either long-calls, or use pic/plt.
17 # Use long-calls for now, it's easier. And faster.
18 # KBUILD_CFLAGS_MODULE += -fPIC
19 # KBUILD_LDFLAGS_MODULE += -shared
20 KBUILD_CFLAGS_MODULE += -mlong-calls
21
22 cflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
23 aflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
24 ldflags-y += $(call cc-option,-mv${CONFIG_HEXAGON_ARCH_VERSION})
25
26 KBUILD_CFLAGS += $(cflags-y)
27 KBUILD_AFLAGS += $(aflags-y)
28 KBUILD_LDFLAGS += $(ldflags-y)
29
30 # Thread-info register will be r19. This value is not configureable;
31 # it is hard-coded in several files.
32 TIR_NAME := r19
33 KBUILD_CFLAGS += -ffixed-$(TIR_NAME) -DTHREADINFO_REG=$(TIR_NAME) -D__linux__
34 KBUILD_AFLAGS += -DTHREADINFO_REG=$(TIR_NAME)
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