From bedbef8ad3e75a304af6361af235302bcc61d06b Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 14 May 2024 06:39:01 +0000
Subject: [PATCH] 修改内核路径
---
kernel/arch/um/Makefile | 40 +++++++++++++---------------------------
1 files changed, 13 insertions(+), 27 deletions(-)
diff --git a/kernel/arch/um/Makefile b/kernel/arch/um/Makefile
index ab1066c..56e5320 100644
--- a/kernel/arch/um/Makefile
+++ b/kernel/arch/um/Makefile
@@ -23,8 +23,6 @@
# features.
SHELL := /bin/bash
-filechk_gen_header = $<
-
core-y += $(ARCH_DIR)/kernel/ \
$(ARCH_DIR)/drivers/ \
$(ARCH_DIR)/os-$(OS)/
@@ -75,7 +73,7 @@
USER_CFLAGS = $(patsubst $(KERNEL_DEFINES),,$(patsubst -I%,,$(KBUILD_CFLAGS))) \
$(ARCH_INCLUDE) $(MODE_INCLUDE) $(filter -I%,$(CFLAGS)) \
-D_FILE_OFFSET_BITS=64 -idirafter $(srctree)/include \
- -idirafter $(obj)/include -D__KERNEL__ -D__UM_HOST__
+ -idirafter $(objtree)/include -D__KERNEL__ -D__UM_HOST__
#This will adjust *FLAGS accordingly to the platform.
include $(ARCH_DIR)/Makefile-os-$(OS)
@@ -116,14 +114,14 @@
archheaders:
$(Q)$(MAKE) -f $(srctree)/Makefile ARCH=$(HEADER_ARCH) asm-generic archheaders
-archprepare: include/generated/user_constants.h
+archprepare:
+ $(Q)$(MAKE) $(build)=$(HOST_DIR)/um include/generated/user_constants.h
LINK-$(CONFIG_LD_SCRIPT_STATIC) += -static
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib $(call cc-option, -no-pie)
CFLAGS_NO_HARDENING := $(call cc-option, -fno-PIC,) $(call cc-option, -fno-pic,) \
- $(call cc-option, -fno-stack-protector,) \
- $(call cc-option, -fno-stack-protector-all,)
+ -fno-stack-protector $(call cc-option, -fno-stack-protector-all)
# Options used by linker script
export LDS_START := $(START)
@@ -133,38 +131,26 @@
# The wrappers will select whether using "malloc" or the kernel allocator.
LINK_WRAPS = -Wl,--wrap,malloc -Wl,--wrap,free -Wl,--wrap,calloc
+# Avoid binutils 2.39+ warnings by marking the stack non-executable and
+# ignorning warnings for the kallsyms sections.
+LDFLAGS_EXECSTACK = -z noexecstack
+ifeq ($(CONFIG_LD_IS_BFD),y)
+LDFLAGS_EXECSTACK += $(call ld-option,--no-warn-rwx-segments)
+endif
+
LD_FLAGS_CMDLINE = $(foreach opt,$(KBUILD_LDFLAGS),-Wl,$(opt))
# Used by link-vmlinux.sh which has special support for um link
export CFLAGS_vmlinux := $(LINK-y) $(LINK_WRAPS) $(LD_FLAGS_CMDLINE)
+export LDFLAGS_vmlinux := $(LDFLAGS_EXECSTACK)
# When cleaning we don't include .config, so we don't include
# TT or skas makefiles and don't clean skas_ptregs.h.
CLEAN_FILES += linux x.i gmon.out
+MRPROPER_FILES += $(HOST_DIR)/include/generated
archclean:
@find . \( -name '*.bb' -o -name '*.bbg' -o -name '*.da' \
-o -name '*.gcov' \) -type f -print | xargs rm -f
-
-# Generated files
-
-$(HOST_DIR)/um/user-offsets.s: __headers FORCE
- $(Q)$(MAKE) $(build)=$(HOST_DIR)/um $@
-
-define filechk_gen-asm-offsets
- (set -e; \
- echo "/*"; \
- echo " * DO NOT MODIFY."; \
- echo " *"; \
- echo " * This file was generated by arch/$(ARCH)/Makefile"; \
- echo " *"; \
- echo " */"; \
- echo ""; \
- sed -ne "/^->/{s:^->\([^ ]*\) [\$$#]*\([^ ]*\) \(.*\):#define \1 \2 /* \3 */:; s:->::; p;}" < $<; \
- echo ""; )
-endef
-
-include/generated/user_constants.h: $(HOST_DIR)/um/user-offsets.s
- $(call filechk,gen-asm-offsets)
export HEADER_ARCH SUBARCH USER_CFLAGS CFLAGS_NO_HARDENING OS DEV_NULL_PATH
--
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