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Commit | Line | Data |
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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) |