20d0021394
This patch makes the command: make ARCH=um SUBARCH=i386 work on x86_64 hosts (with support for building 32-bit binaries). This is especially needed since 64-bit UMLs don't support 32-bit emulation for guest binaries, currently. This has been tested in all possible cases and works. Only exception is that I've built but not tested a 64-bit binary, because I hadn't a 64-bit filesystem available. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
35 lines
934 B
Plaintext
35 lines
934 B
Plaintext
# Copyright 2003 - 2004 Pathscale, Inc
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# Released under the GPL
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libs-y += arch/um/sys-x86_64/
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START := 0x60000000
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#We #undef __x86_64__ for kernelspace, not for userspace where
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#it's needed for headers to work!
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CFLAGS += -U__$(SUBARCH)__ -fno-builtin $(STUB_CFLAGS)
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USER_CFLAGS += -fno-builtin
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ELF_ARCH := i386:x86-64
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ELF_FORMAT := elf64-x86-64
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SYS_UTIL_DIR := $(ARCH_DIR)/sys-x86_64/util
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SYS_DIR := $(ARCH_DIR)/include/sysdep-x86_64
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SYS_HEADERS = $(SYS_DIR)/sc.h $(SYS_DIR)/thread.h
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prepare: $(SYS_HEADERS)
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$(SYS_DIR)/sc.h: $(SYS_UTIL_DIR)/mk_sc
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$(call filechk,gen_header)
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$(SYS_DIR)/thread.h: $(SYS_UTIL_DIR)/mk_thread
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$(call filechk,gen_header)
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$(SYS_UTIL_DIR)/mk_sc: scripts_basic $(ARCH_DIR)/user-offsets.h FORCE
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$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
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$(SYS_UTIL_DIR)/mk_thread: scripts_basic $(GEN_HEADERS) $(ARCH_DIR)/kernel-offsets.h FORCE
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$(Q)$(MAKE) $(build)=$(SYS_UTIL_DIR) $@
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CLEAN_FILES += $(SYS_HEADERS)
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