projects / mirror_ubuntu-bionic-kernel.git / blame
| Commit | Line | Data |
|---|---|---|
| b2441318 | 1 | # SPDX-License-Identifier: GPL-2.0 |
| 86feeaa8 SR |
2 | # |
| 3 | # Kbuild for top-level directory of the kernel | |
| 4 | # This file takes care of the following: | |
| 1cdf25d7 | 5 | # 1) Generate bounds.h |
| 0a227985 NMG |
6 | # 2) Generate timeconst.h |
| 7 | # 3) Generate asm-offsets.h (may need bounds.h and timeconst.h) | |
| 8 | # 4) Check for missing system calls | |
| f197d75f | 9 | # 5) Generate constants.py (may need bounds.h) |
| 86feeaa8 | 10 | |
| 39664e2f MY |
11 | ##### |
| 12 | # 1) Generate bounds.h | |
| 13 | ||
| 14 | bounds-file := include/generated/bounds.h | |
| 15 | ||
| 16 | always := $(bounds-file) | |
| 8a58e162 | 17 | targets := kernel/bounds.s |
| 39664e2f | 18 | |
| 1cdf25d7 CL |
19 | # We use internal kbuild rules to avoid the "is up to date" message from make |
| 20 | kernel/bounds.s: kernel/bounds.c FORCE | |
| 1cdf25d7 CL |
21 | $(call if_changed_dep,cc_s_c) |
| 22 | ||
| 70a4fd6c MM |
23 | $(obj)/$(bounds-file): kernel/bounds.s FORCE |
| 24 | $(call filechk,offsets,__LINUX_BOUNDS_H__) | |
| 1cdf25d7 CL |
25 | |
| 26 | ##### | |
| 0a227985 NMG |
27 | # 2) Generate timeconst.h |
| 28 | ||
| 29 | timeconst-file := include/generated/timeconst.h | |
| 30 | ||
| 0a227985 NMG |
31 | targets += $(timeconst-file) |
| 32 | ||
| 33 | quiet_cmd_gentimeconst = GEN $@ | |
| 34 | define cmd_gentimeconst | |
| 35 | (echo $(CONFIG_HZ) | bc -q $< ) > $@ | |
| 36 | endef | |
| 37 | define filechk_gentimeconst | |
| 38 | (echo $(CONFIG_HZ) | bc -q $< ) | |
| 39 | endef | |
| 40 | ||
| 41 | $(obj)/$(timeconst-file): kernel/time/timeconst.bc FORCE | |
| 42 | $(call filechk,gentimeconst) | |
| 43 | ||
| 44 | ##### | |
| 45 | # 3) Generate asm-offsets.h | |
| 86feeaa8 SR |
46 | # |
| 47 | ||
| 559df2e0 | 48 | offsets-file := include/generated/asm-offsets.h |
| 86feeaa8 | 49 | |
| 1cdf25d7 | 50 | always += $(offsets-file) |
| 6752ed90 | 51 | targets += arch/$(SRCARCH)/kernel/asm-offsets.s |
| 1cdf25d7 | 52 | |
| 86feeaa8 | 53 | # We use internal kbuild rules to avoid the "is up to date" message from make |
| 1cdf25d7 | 54 | arch/$(SRCARCH)/kernel/asm-offsets.s: arch/$(SRCARCH)/kernel/asm-offsets.c \ |
| 0a227985 | 55 | $(obj)/$(timeconst-file) $(obj)/$(bounds-file) FORCE |
| 86feeaa8 SR |
56 | $(call if_changed_dep,cc_s_c) |
| 57 | ||
| 70a4fd6c MM |
58 | $(obj)/$(offsets-file): arch/$(SRCARCH)/kernel/asm-offsets.s FORCE |
| 59 | $(call filechk,offsets,__ASM_OFFSETS_H__) | |
| 86feeaa8 | 60 | |
| c53aeca0 | 61 | ##### |
| 0a227985 | 62 | # 4) Check for missing system calls |
| c53aeca0 SR |
63 | # |
| 64 | ||
| 5f7efb4c AL |
65 | always += missing-syscalls |
| 66 | targets += missing-syscalls | |
| 67 | ||
| c53aeca0 | 68 | quiet_cmd_syscalls = CALL $< |
| 44656fa0 | 69 | cmd_syscalls = $(CONFIG_SHELL) $< $(CC) $(c_flags) $(missing_syscalls_flags) |
| c53aeca0 | 70 | |
| 5f7efb4c | 71 | missing-syscalls: scripts/checksyscalls.sh $(offsets-file) FORCE |
| c53aeca0 | 72 | $(call cmd,syscalls) |
| 1cdf25d7 | 73 | |
| f197d75f KB |
74 | ##### |
| 75 | # 5) Generate constants for Python GDB integration | |
| 76 | # | |
| 77 | ||
| 78 | extra-$(CONFIG_GDB_SCRIPTS) += build_constants_py | |
| 79 | ||
| 80 | build_constants_py: $(obj)/$(timeconst-file) $(obj)/$(bounds-file) | |
| 81 | @$(MAKE) $(build)=scripts/gdb/linux $@ | |
| 82 | ||
| 0a227985 NMG |
83 | # Keep these three files during make clean |
| 84 | no-clean-files := $(bounds-file) $(offsets-file) $(timeconst-file) |