diff options
Diffstat (limited to 'usr/klibc/syscalls/Kbuild')
| -rw-r--r-- | usr/klibc/syscalls/Kbuild | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/usr/klibc/syscalls/Kbuild b/usr/klibc/syscalls/Kbuild new file mode 100644 index 0000000..3f56798 --- /dev/null +++ b/usr/klibc/syscalls/Kbuild @@ -0,0 +1,99 @@ +# +# kbuild file for generating syscall stubs +# + +# Include automatically generated Makefile fragment. +# It contains definition of syscall-objs specifying name of all .o files +ifeq ($(clean),) +-include $(obj)/syscalls.mk +endif + +# Listing of all .o files +always := klib.list + + +##### +# Generate syscalls stubs +# Based on list in SYSCALLS.def generate stubs for sys calls. Actual arch code +# is defined in an arch specific perl file +targets += syscalls.mk +targets += klib.list +targets += SYSCALLS.i syscalls.nrs +targets += typesize.c typesize.o typesize.bin +targets += $(syscall-objs) + +# Side effect of running syscalls.pl +clean-files += $(objtree)/$(KLIBCINC)/klibc/havesyscall.h +clean-files += $(KLIBCINC)/klibc/havesyscall.h +# All the syscall stubs +clean-files += *.o *.S *.c *.list *.bin + +EXTRA_KLIBCCFLAGS := -I$(srctree)/$(src) + +quiet_cmd_makelist = LIST $@ + cmd_makelist = echo '$(filter-out FORCE,$^)' > $@ + +# Create list of all files +$(obj)/klib.list: $(call objectify,$(syscall-objs)) FORCE + $(call if_changed,makelist) + +# Generate assembler file (.i) +# We pass -ansi to keep cpp from define e.g. "i386" as well as "__i386__" +quiet_cmd_syscall.i = GEN $@ + cmd_syscall.i = $(KLIBCCC) $(klibccflags) -D__ASSEMBLY__ \ + -ansi -x c -E -o $@ $< +$(obj)/SYSCALLS.i: $(KLIBCSRC)/SYSCALLS.def FORCE + $(call if_changed_dep,syscall.i) + +# Get syscalls numbers +quiet_cmd_syscall.nrs = GEN $@ + cmd_syscall.nrs = $(KLIBCCC) $(klibccflags) -Wp,-dM -x c -E -o $@ $< +$(obj)/syscalls.nrs: $(KLIBCINC)/sys/syscall.h FORCE + $(call if_changed_dep,syscall.nrs) + +# Generate typesize.c +quiet_cmd_syscalsz = GEN $@ + cmd_syscalsz = \ + mkdir -p $(KLIBCINC)/klibc/; \ + $(PERL) $(srctree)/$(KLIBCSRC)/syscalls.pl \ + -1 $(obj)/SYSCALLS.i \ + $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/sysstub.ph \ + $(KLIBCARCH) $(KLIBCBITSIZE) $(obj)/syscalls.nrs \ + $(obj) \ + $(KLIBCINC)/klibc/havesyscall.h \ + $(obj)/typesize.c > $@ \ + || ( rm -f $@ ; exit 1 ) + +$(obj)/typesize.c: $(srctree)/$(KLIBCSRC)/syscalls.pl $(obj)/SYSCALLS.i \ + $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/sysstub.ph \ + $(src)/syscommon.h $(obj)/syscalls.nrs FORCE + $(call if_changed,syscalsz) + +# Convert typesize.o to typesize.bin +quiet_cmd_mkbin = OBJCOPY $@ + cmd_mkbin = $(KLIBCOBJCOPY) -O binary --only-section .rodata $< $@ + +$(obj)/typesize.bin: $(obj)/typesize.o FORCE + $(call if_changed,mkbin) + +# Generate $(KLIBINC)/klibc/havesyscall.h + makefile fragment +# Using sysstub.pl in arch dir generate all .S files +quiet_cmd_syscalls = GEN $@ + cmd_syscalls = \ + mkdir -p $(KLIBCINC)/klibc/; \ + $(PERL) $(srctree)/$(KLIBCSRC)/syscalls.pl -2 $(obj)/SYSCALLS.i \ + $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/sysstub.ph \ + $(KLIBCARCH) $(KLIBCBITSIZE) $(obj)/syscalls.nrs \ + $(obj) \ + $(KLIBCINC)/klibc/havesyscall.h \ + $(obj)/typesize.bin > $@ \ + || ( rm -f $@ ; exit 1 ) + +$(obj)/syscalls.mk: $(srctree)/$(KLIBCSRC)/syscalls.pl $(obj)/SYSCALLS.i \ + $(srctree)/$(KLIBCSRC)/arch/$(KLIBCARCHDIR)/sysstub.ph \ + $(call objectify, $(syscall-objs:.o=.S)) \ + $(src)/syscommon.h $(obj)/syscalls.nrs \ + $(obj)/typesize.bin FORCE + $(call if_changed,syscalls) + +PHONY += FORCE |