build system: use archives, not linker action to shorten command lines
Intermediate linking may distort linker behavior (in particular related to weak symbols). The idea is that archives are closer to 'just a list of object files', and ideally makes the linker more predictable. Using --whole-archive, the linker doesn't optimize out object files just because their symbols were already provided by weak versions. However it shouldn't be used for libgcc, because that one has some unexpected side-effects. Change-Id: Ie226c198a93bcdca2d82c02431c72108a1c6ea60 Signed-off-by: Patrick Georgi <pgeorgi@chromium.org> Reviewed-on: http://review.coreboot.org/10139 Tested-by: build bot (Jenkins) Reviewed-by: Aaron Durbin <adurbin@chromium.org> Tested-by: Raptor Engineering Automated Test Stand <noreply@raptorengineeringinc.com>
This commit is contained in:
parent
18fed3dda6
commit
eec8dfb5e7
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@ -115,8 +115,8 @@ files-in-dir=$(filter-out $(call dir-wildcards,$(call filter-out-dirs,$(1),$(sor
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# directory into an intermediate file
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# directory into an intermediate file
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ramstage-postprocess=$$(eval DEPENDENCIES+=$$(addsuffix .d,$$(basename $(1)))) \
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ramstage-postprocess=$$(eval DEPENDENCIES+=$$(addsuffix .d,$$(basename $(1)))) \
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$(foreach d,$(sort $(dir $(filter-out %.ld,$(1)))), \
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$(foreach d,$(sort $(dir $(filter-out %.ld,$(1)))), \
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$(eval $(d)ramstage.o: $(call files-in-dir,$(d),$(filter-out %.ld,$(1))); $$(LD_ramstage) -o $$@ -r $$^ ) \
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$(eval $(d)ramstage.a: $(call files-in-dir,$(d),$(filter-out %.ld,$(1))); rm -f $$@ && $(AR_ramstage) rcsT $$@ $$^ ) \
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$(eval ramstage-objs:=$(d)ramstage.o $(filter-out $(filter-out %.ld, $(call files-in-dir,$(d),$(1))),$(ramstage-objs))))
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$(eval ramstage-objs:=$(d)ramstage.a $(filter-out $(filter-out %.ld, $(call files-in-dir,$(d),$(1))),$(ramstage-objs))))
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bootblock-generic-ccopts += -D__PRE_RAM__ -D__BOOTBLOCK__
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bootblock-generic-ccopts += -D__PRE_RAM__ -D__BOOTBLOCK__
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romstage-generic-ccopts += -D__PRE_RAM__ -D__ROMSTAGE__
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romstage-generic-ccopts += -D__PRE_RAM__ -D__ROMSTAGE__
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@ -63,7 +63,7 @@ bootblock-y += clock.c
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$(objcbfs)/bootblock.debug: $$(bootblock-objs)
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$(objcbfs)/bootblock.debug: $$(bootblock-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
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endif # CONFIG_ARCH_BOOTBLOCK_ARM
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endif # CONFIG_ARCH_BOOTBLOCK_ARM
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@ -75,7 +75,7 @@ ifeq ($(CONFIG_ARCH_VERSTAGE_ARM),y)
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$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
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$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_verstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld --start-group $(filter-out %.ld,$(verstage-objs)) $(objgenerated)/libverstage.a --end-group
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$(LD_verstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld --whole-archive --start-group $(filter-out %.ld,$(verstage-objs)) $(objgenerated)/libverstage.a --end-group
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verstage-y += boot.c
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verstage-y += boot.c
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verstage-y += div0.c
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verstage-y += div0.c
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@ -110,7 +110,7 @@ VBOOT_STUB_DEPS += $(obj)/arch/arm/eabi_compat.rmodules_arm.o
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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$(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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endif # CONFIG_ARCH_ROMSTAGE_ARM
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endif # CONFIG_ARCH_ROMSTAGE_ARM
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@ -139,6 +139,6 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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@printf " CC $(subst $(obj)/,,$(@))\n"
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@printf " CC $(subst $(obj)/,,$(@))\n"
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$(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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$(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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endif # CONFIG_ARCH_RAMSTAGE_ARM
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endif # CONFIG_ARCH_RAMSTAGE_ARM
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@ -74,7 +74,7 @@ bootblock-y += ../../lib/memmove.c
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$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
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$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld
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endif # CONFIG_ARCH_BOOTBLOCK_ARM64
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endif # CONFIG_ARCH_BOOTBLOCK_ARM64
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@ -86,7 +86,7 @@ ifeq ($(CONFIG_ARCH_VERSTAGE_ARM64),y)
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$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
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$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_verstage) --gc-sections -static -o $@ -L$(obj) --start-group $(objgenerated)/libverstage.a $$(verstage-objs) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld
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$(LD_verstage) --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(objgenerated)/libverstage.a $$(verstage-objs) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld
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verstage-$(CONFIG_EARLY_CONSOLE) += early_console.c
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verstage-$(CONFIG_EARLY_CONSOLE) += early_console.c
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verstage-y += boot.c
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verstage-y += boot.c
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@ -129,7 +129,7 @@ VBOOT_STUB_DEPS += $(obj)/arch/arm/eabi_compat.rmodules_arm64.o
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) --start-group $(filter-out %.ld,$(romstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld
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$(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld
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endif # CONFIG_ARCH_ROMSTAGE_ARM64
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endif # CONFIG_ARCH_ROMSTAGE_ARM64
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@ -178,7 +178,7 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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@printf " CC $(subst $(obj)/,,$(@))\n"
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@printf " CC $(subst $(obj)/,,$(@))\n"
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$(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld
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$(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld
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# Build ARM Trusted Firmware (BL31)
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# Build ARM Trusted Firmware (BL31)
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@ -51,7 +51,7 @@ bootblock-S-ccopts += -undef
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$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
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$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
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endif # CONFIG_ARCH_BOOTBLOCK_MIPS
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endif # CONFIG_ARCH_BOOTBLOCK_MIPS
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@ -72,7 +72,7 @@ romstage-y += ../../lib/memset.c
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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$(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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endif # CONFIG_ARCH_ROMSTAGE_MIPS
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endif # CONFIG_ARCH_ROMSTAGE_MIPS
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@ -96,6 +96,6 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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@printf " CC $(subst $(obj)/,,$(@))\n"
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@printf " CC $(subst $(obj)/,,$(@))\n"
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$(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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$(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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endif # CONFIG_ARCH_RAMSTAGE_MIPS
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endif # CONFIG_ARCH_RAMSTAGE_MIPS
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@ -41,7 +41,7 @@ bootblock-y += \
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$(objcbfs)/bootblock.debug: $$(bootblock-objs)
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$(objcbfs)/bootblock.debug: $$(bootblock-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) \
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$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) \
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-T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) \
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-T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) \
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$(LIBGCC_FILE_NAME_bootblock) --end-group
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$(LIBGCC_FILE_NAME_bootblock) --end-group
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endif
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endif
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@ -67,7 +67,7 @@ romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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$(objcbfs)/romstage.debug: $$(romstage-objs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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$(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
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romstage-c-ccopts += $(riscv_flags)
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romstage-c-ccopts += $(riscv_flags)
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romstage-S-ccopts += $(riscv_asm_flags)
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romstage-S-ccopts += $(riscv_asm_flags)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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$(objcbfs)/ramstage.debug: $$(ramstage-objs)
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@printf " CC $(subst $(obj)/,,$(@))\n"
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@printf " CC $(subst $(obj)/,,$(@))\n"
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$(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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$(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
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ramstage-c-ccopts += $(riscv_flags)
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ramstage-c-ccopts += $(riscv_flags)
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ramstage-S-ccopts += $(riscv_asm_flags)
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ramstage-S-ccopts += $(riscv_asm_flags)
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@ -202,7 +202,7 @@ romstage-libs ?=
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$(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
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$(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage_null.ld
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$(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) --no-whole-archive $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage_null.ld
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$(OBJCOPY_romstage) --only-section .illegal_globals $(@) $(objcbfs)/romstage_null.offenders && \
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$(OBJCOPY_romstage) --only-section .illegal_globals $(@) $(objcbfs)/romstage_null.offenders && \
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$(NM_romstage) $(objcbfs)/romstage_null.offenders | grep -q ""; if [ $$? -eq 0 ]; then \
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$(NM_romstage) $(objcbfs)/romstage_null.offenders | grep -q ""; if [ $$? -eq 0 ]; then \
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echo "Forbidden global variables in romstage:"; \
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echo "Forbidden global variables in romstage:"; \
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@ -211,7 +211,7 @@ $(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.
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$(objcbfs)/romstage.debug: $$(romstage-objs) $(objgenerated)/romstage.ld $$(romstage-libs)
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$(objcbfs)/romstage.debug: $$(romstage-objs) $(objgenerated)/romstage.ld $$(romstage-libs)
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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@printf " LINK $(subst $(obj)/,,$(@))\n"
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$(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage.ld
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$(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) --no-whole-archive $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage.ld
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$(objgenerated)/romstage_null.ld: $(obj)/config.h $$(filter %.ld,$$(romstage-srcs))
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$(objgenerated)/romstage_null.ld: $(obj)/config.h $$(filter %.ld,$$(romstage-srcs))
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@printf " GEN $(subst $(obj)/,,$(@))\n"
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@printf " GEN $(subst $(obj)/,,$(@))\n"
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$(objgenerated)/ramstage.o: $$(ramstage-objs) $(COMPILER_RT_ramstage) $$(ramstage-libs)
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$(objgenerated)/ramstage.o: $$(ramstage-objs) $(COMPILER_RT_ramstage) $$(ramstage-libs)
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@printf " CC $(subst $(obj)/,,$(@))\n"
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@printf " CC $(subst $(obj)/,,$(@))\n"
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$(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) $(COMPILER_RT_ramstage) --end-group
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$(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
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endif # CONFIG_ARCH_RAMSTAGE_X86_32
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endif # CONFIG_ARCH_RAMSTAGE_X86_32
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@ -32,7 +32,7 @@ smm-generic-ccopts += -D__SMM__
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smm-c-deps:=$$(OPTION_TABLE_H)
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smm-c-deps:=$$(OPTION_TABLE_H)
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$(obj)/cpu/x86/smm/smm.o: $$(smm-objs) $(COMPILER_RT_smm)
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$(obj)/cpu/x86/smm/smm.o: $$(smm-objs) $(COMPILER_RT_smm)
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$(LD_smm) -nostdlib -r -o $@ $(COMPILER_RT_FLAGS_smm) --start-group $(smm-objs) $(COMPILER_RT_smm) --end-group
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$(LD_smm) -nostdlib -r -o $@ $(COMPILER_RT_FLAGS_smm) --whole-archive --start-group $(smm-objs) --no-whole-archive $(COMPILER_RT_smm) --end-group
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ifeq ($(CONFIG_SMM_MODULES),y)
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ifeq ($(CONFIG_SMM_MODULES),y)
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@ -191,7 +191,7 @@ RMODULE_LDFLAGS := -nostartfiles --gc-sections --emit-relocs -z defs -Bsymbolic
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# rmdoule is named $(1).rmod
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# rmdoule is named $(1).rmod
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define rmodule_link
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define rmodule_link
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$(strip $(1)): $(strip $(2)) $$(COMPILER_RT_rmodules_$(4)) $(obj)/lib/rmodule.rmodules_$(4).ld | $$(RMODTOOL)
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$(strip $(1)): $(strip $(2)) $$(COMPILER_RT_rmodules_$(4)) $(obj)/lib/rmodule.rmodules_$(4).ld | $$(RMODTOOL)
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||||||
$$(LD_rmodules_$(4)) $(RMODULE_LDFLAGS) -T $(obj)/lib/rmodule.rmodules_$(4).ld --defsym=__heap_size=$(strip $(3)) -o $$@ --start-group $(filter-out %.ld,$(2)) --end-group
|
$$(LD_rmodules_$(4)) $(RMODULE_LDFLAGS) -T $(obj)/lib/rmodule.rmodules_$(4).ld --defsym=__heap_size=$(strip $(3)) -o $$@ --whole-archive --start-group $(filter-out %.ld,$(2)) --end-group
|
||||||
$$(NM_rmodules_$(4)) -n $$@ > $$(basename $$@).map
|
$$(NM_rmodules_$(4)) -n $$@ > $$(basename $$@).map
|
||||||
|
|
||||||
$(strip $(1)).rmod: $(strip $(1))
|
$(strip $(1)).rmod: $(strip $(1))
|
||||||
|
|
Loading…
Reference in New Issue