Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) # SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) obj-y += vsyscall.o vsyscall-syscall.o vsyscall-syms.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) $(obj)/vsyscall-syscall.o: \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) 	$(foreach F,trapa,$(obj)/vsyscall-$F.so)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) # Teach kbuild about targets
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) targets += $(foreach F,trapa,vsyscall-$F.o vsyscall-$F.so)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) targets += vsyscall-note.o vsyscall.lds vsyscall-dummy.o
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) # The DSO images are built using a special linker script
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) quiet_cmd_syscall = SYSCALL $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13)       cmd_syscall = $(CC) -nostdlib $(SYSCFLAGS_$(@F)) \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 			   -Wl,-T,$(filter-out FORCE,$^) -o $@
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) export CPPFLAGS_vsyscall.lds += -P -C -Ush
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) vsyscall-flags = -shared -s -Wl,-soname=linux-gate.so.1 -Wl,--hash-style=sysv
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) SYSCFLAGS_vsyscall-trapa.so	= $(vsyscall-flags)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) $(obj)/vsyscall-trapa.so: \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) $(obj)/vsyscall-%.so: $(src)/vsyscall.lds $(obj)/vsyscall-%.o FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	$(call if_changed,syscall)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) # We also create a special relocatable object that should mirror the symbol
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) # table and layout of the linked DSO.  With ld -R we can then refer to
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) # these symbols in the kernel code rather than hand-coded addresses.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) SYSCFLAGS_vsyscall-dummy.o = -r
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) $(obj)/vsyscall-dummy.o: $(src)/vsyscall.lds \
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 			$(obj)/vsyscall-trapa.o $(obj)/vsyscall-note.o FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 	$(call if_changed,syscall)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) LDFLAGS_vsyscall-syms.o := -r -R
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) $(obj)/vsyscall-syms.o: $(obj)/vsyscall-dummy.o FORCE
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	$(call if_changed,ld)