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Merge pull request #9505 from douzzer/20251209-linuxkm-GENERATE_SECTION_MAP--sections

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20251209-linuxkm-GENERATE_SECTION_MAP--sections
This commit is contained in:
Sean Parkinson
2025-12-11 08:03:44 +10:00
committed by GitHub
parent 4d4751bff3 ba861971eb
commit 1faf740f10
2 changed files with 36 additions and 16 deletions
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48
linuxkm/Makefile
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@@ -104,21 +104,41 @@ ifndef MAKE_TMPDIR
endif
GENERATE_SECTION_MAP := $(AWK) 'BEGIN { printf("") >ENVIRON["SECTION_MAP"]; } \
{ \
if ($$7 !~ "^[0-9]+$$") \
next; \
if ($$4 == "SECTION") { \
sections[$$7] = $$8; \
next; \
/^Section Headers:/ { \
in_sections = 1; \
in_symbols = 0; \
next; \
} \
/^Symbol table / { \
if (! in_sections) { \
print "symbol table appeared before section headers." >"/dev/stderr"; \
exit(1); \
} \
if (($$4 == "NOTYPE") || ($$4 == "OBJECT") || ($$4 == "FUNC")) { \
if (($$8 == "$$d") || ($$8 == "$$t")) \
in_sections = 0; \
in_symbols = 1; \
next; \
} \
{ \
if (in_sections) { \
if (match($$0, \
"^[[:space:]]*\\[[[:space:]]*([0-9]+)[[:space:]]*\\][[:space:]]+([^[:space:]]+)[[:space:]]",\
section_line_a)) { \
sections[section_line_a[1]] = section_line_a[2]; \
next; \
if ($$7 in sections) { \
if (sections[$$7] ~ "_wolfcrypt$$") \
print $$8 "\t" sections[$$7] >>ENVIRON["SECTION_MAP"]; \
} else \
print $$8 " is in section " $$7 " with no name mapping." >"/dev/stderr";\
} \
} \
if (in_symbols) { \
if ($$7 !~ "^[0-9]+$$") \
next; \
if (($$4 == "NOTYPE") || ($$4 == "OBJECT") || ($$4 == "FUNC")) { \
if (($$8 == "$$d") || ($$8 == "$$t")) \
next; \
if ($$7 in sections) { \
if (sections[$$7] ~ "_wolfcrypt$$") \
print $$8 "\t" sections[$$7] >>ENVIRON["SECTION_MAP"]; \
} else \
print $$8 " is in section " $$7 " with no name mapping." >"/dev/stderr";\
} \
} \
}'
@@ -272,7 +292,7 @@ ifeq "$(ENABLED_LINUXKM_PIE)" "yes"
@SECTION_MAP=$$(mktemp)
@trap 'rm "$$SECTION_MAP"' EXIT
@export SECTION_MAP
@$(READELF) --wide --symbols "$@" | $(GENERATE_SECTION_MAP)
@$(READELF) --wide --sections --symbols "$@" | $(GENERATE_SECTION_MAP)
@$(READELF) --wide --relocs "$@" | $(GENERATE_RELOC_TAB) >| '$(MODULE_TOP)/linuxkm/wc_linuxkm_pie_reloc_tab.c'
+$(MAKE) ARCH='$(KERNEL_ARCH)' $(OVERRIDE_PATHS) $(CROSS_COMPILE) -C '$(KERNEL_ROOT)' M='$(MODULE_TOP)' $(KBUILD_EXTRA_FLAGS) CC_FLAGS_FTRACE=
@$(READELF) --wide --relocs "$@" | $(GENERATE_RELOC_TAB) >| "$$RELOC_TMP"