1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
|
# SPDX-License-Identifier: GPL-2.0-only
# drm/tegra depends on host1x, so if both drivers are built-in care must be
# taken to initialize them in the correct order. Link order is the only way
# to ensure this currently.
# Similarly, buddy must come first since it is used by other drivers.
obj-$(CONFIG_GPU_BUDDY) += buddy.o
obj-y += host1x/ drm/ vga/ tests/
obj-$(CONFIG_IMX_IPUV3_CORE) += ipu-v3/
obj-$(CONFIG_TRACE_GPU_MEM) += trace/
# nova-core and nova-drm are built from this Makefile so nova-drm's dependency
# on nova-core can be expressed as a plain Make prerequisite rather than a
# recursive sub-make. This is a temporary workaround until the Rust build
# system supports cross-crate dependencies natively.
obj-$(CONFIG_NOVA_CORE) += nova-core.o
nova-core-y := nova-core/nova_core.o nova-core/nova_core_exports.o
obj-$(CONFIG_DRM_NOVA) += nova-drm.o
nova-drm-y := drm/nova/nova.o
# Export Rust symbols from nova-core only if nova-drm actually references them.
nova-core-export-deps := $(if $(CONFIG_DRM_NOVA),$(obj)/drm/nova/nova.o)
rust_needed_exports = \
{ $(if $(strip $(2)),$(NM) -u $(2);,) echo "__DEFINED_RUST_SYMBOLS__"; \
$(NM) -p --defined-only $(1); } | \
awk -v fmt='$(3)' ' \
/^__DEFINED_RUST_SYMBOLS__$$/ { defs = 1; next } \
!defs { if ($$NF ~ /^_R/) needed[$$NF] = 1; next } \
defs && $$2 ~ /(T|R|D|B)/ && $$3 ~ /^_R/ && \
$$3 !~ /_(init|cleanup)_module$$/ && \
$$3 !~ /__(pfx|cfi|odr_asan)/ && \
$$3 in needed { printf fmt, $$3 } \
'
quiet_cmd_exports = EXPORTS $@
cmd_exports = \
$(call rust_needed_exports,$<,$(nova-core-export-deps),EXPORT_SYMBOL_RUST_GPL(%s);\n) > $@
$(obj)/nova-core/exports_nova_core_generated.h: $(obj)/nova-core/nova_core.o $(nova-core-export-deps) FORCE
$(call if_changed,exports)
targets += nova-core/exports_nova_core_generated.h
$(obj)/nova-core/nova_core_exports.o: $(obj)/nova-core/exports_nova_core_generated.h
CFLAGS_nova-core/nova_core_exports.o := -I $(objtree)/$(obj)/nova-core
ifdef CONFIG_MODVERSIONS
# The C export shim declares Rust symbols as `extern int`, so reuse its export
# list but generate symbol CRCs from the Rust object instead of the shim's DWARF.
$(obj)/nova-core/nova_core_exports.o: private cmd_gensymtypes_c = \
$(call getexportsymbols,\1) | \
$(objtree)/scripts/gendwarfksyms/gendwarfksyms \
$(if $(KBUILD_GENDWARFKSYMS_STABLE), --stable) \
$(if $(KBUILD_SYMTYPES), --symtypes $(@:.o=.symtypes),) \
$(obj)/nova-core/nova_core.o
endif
# Output nova-core's crate metadata for use by nova-drm at compile time.
RUSTFLAGS_nova-core/nova_core.o += \
--emit=metadata=$(objtree)/$(obj)/nova-core/libnova_core.rmeta
# Allow nova-drm to import nova-core's types.
$(obj)/drm/nova/nova.o: $(obj)/nova-core/nova_core.o
RUSTFLAGS_drm/nova/nova.o := -L $(objtree)/$(obj)/nova-core --extern nova_core
|
