| 1 | #␊ |
| 2 | # Kbuild for top-level directory of the kernel␊ |
| 3 | # This file takes care of the following:␊ |
| 4 | # 1) Generate asm-offsets.h␊ |
| 5 | # 2) Check for missing system calls␊ |
| 6 | ␊ |
| 7 | #####␊ |
| 8 | # 1) Generate asm-offsets.h␊ |
| 9 | #␊ |
| 10 | ␊ |
| 11 | offsets-file := include/asm-$(SRCARCH)/asm-offsets.h␊ |
| 12 | ␊ |
| 13 | always := $(offsets-file)␊ |
| 14 | targets := $(offsets-file)␊ |
| 15 | targets += arch/$(SRCARCH)/kernel/asm-offsets.s␊ |
| 16 | clean-files := $(addprefix $(objtree)/,$(targets))␊ |
| 17 | ␊ |
| 18 | # Default sed regexp - multiline due to syntax constraints␊ |
| 19 | define sed-y␊ |
| 20 | ␉"/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}"␊ |
| 21 | endef␊ |
| 22 | # Override default regexp for specific architectures␊ |
| 23 | sed-$(CONFIG_MIPS) := "/^@@@/{s/^@@@//; s/ \#.*\$$//; p;}"␊ |
| 24 | ␊ |
| 25 | quiet_cmd_offsets = GEN $@␊ |
| 26 | define cmd_offsets␊ |
| 27 | ␉(set -e; \␊ |
| 28 | ␉ echo "#ifndef __ASM_OFFSETS_H__"; \␊ |
| 29 | ␉ echo "#define __ASM_OFFSETS_H__"; \␊ |
| 30 | ␉ echo "/*"; \␊ |
| 31 | ␉ echo " * DO NOT MODIFY."; \␊ |
| 32 | ␉ echo " *"; \␊ |
| 33 | ␉ echo " * This file was generated by Kbuild"; \␊ |
| 34 | ␉ echo " *"; \␊ |
| 35 | ␉ echo " */"; \␊ |
| 36 | ␉ echo ""; \␊ |
| 37 | ␉ sed -ne $(sed-y) $<; \␊ |
| 38 | ␉ echo ""; \␊ |
| 39 | ␉ echo "#endif" ) > $@␊ |
| 40 | endef␊ |
| 41 | ␊ |
| 42 | # We use internal kbuild rules to avoid the "is up to date" message from make␊ |
| 43 | arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c FORCE␊ |
| 44 | ␉$(Q)mkdir -p $(dir $@)␊ |
| 45 | ␉$(call if_changed_dep,cc_s_c)␊ |
| 46 | ␊ |
| 47 | $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s Kbuild␊ |
| 48 | ␉$(Q)mkdir -p $(dir $@)␊ |
| 49 | ␉$(call cmd,offsets)␊ |
| 50 | ␊ |
| 51 | #####␊ |
| 52 | # 2) Check for missing system calls␊ |
| 53 | #␊ |
| 54 | ␊ |
| 55 | quiet_cmd_syscalls = CALL $<␊ |
| 56 | cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags)␊ |
| 57 | ␊ |
| 58 | PHONY += missing-syscalls␊ |
| 59 | missing-syscalls: scripts/checksyscalls.sh FORCE␊ |
| 60 | ␉$(call cmd,syscalls)␊ |
| 61 | |
