linux/arch/x86/Makefile.um
Linus Torvalds 64e851689e This pull request contains the following changes for UML:
- Add support for rust (yay!)
 - Add support for LTO
 - Add platform bus support to virtio-pci
 - Various virtio fixes
 - Coding style, spelling cleanups
 -----BEGIN PGP SIGNATURE-----
 
 iQJKBAABCAA0FiEEdgfidid8lnn52cLTZvlZhesYu8EFAmP/AVYWHHJpY2hhcmRA
 c2lnbWEtc3Rhci5hdAAKCRBm+VmF6xi7wUQvEADRVll8yCg+a4C1BORSefv0FQ/I
 z+3jiUtzq/ABGBf9S0TYEfaGcOn1LXFzlEgtqf4kd3vmzyIVG0pHUt3BxaqLSSTU
 IjDZkbtZ2GC0i7EK8D3iAC+lvew+TjBMfgEjhrNyni3VeYNDBh8EkUseWIbrNX8Q
 pqoUQwYlVdjY6PedtcdGDko70Fiy4OMIK7lat7JDtuoL5pvMEadbR1D7ClfiYRIh
 NGg5mSnfBBTGc20ochDkHUhubzagtSCDHvNe2SiYDBrM5sjeSANecsICmymWS+Pm
 aJtYybwpC4tl9J25O4OTD3SyfKxZ93mKwK89Tw9ryqQV2rmXG+3qB2hbZ0zpi75I
 vpgDrfv+VC+4daC0Wp8zjoeSE6zUbCKVE1s307EC5fjYyIoHjSUAsPE9GrNaJi5K
 91WVe1x8Dnpfq9/ZO8o3sLqftBo3aVH21dGVuqi5qS6OjRqDMkFkaY31nUjVXELV
 tEBj6n9UoyqPFzcgvsQfTcCjjlMiVL+JU+sl2L7dQXTNev1/RReTJngdK/vv7Epo
 BjLpGfn+1I/8dlbsyjLt0FOIwhIbUf+8RbWpezENGVgKP81iqEQPOdax/yBEhCKm
 NWduDz2itQn94KNMcUoPq+G3xoG3dOW7lXlEzXP6ZbLkcuIyXpeNZeJNlvq7J/z/
 2PBy61Ngs/DDUK/doQ==
 =q2ks
 -----END PGP SIGNATURE-----

Merge tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux

Pull UML updates from Richard Weinberger:

 - Add support for rust (yay!)

 - Add support for LTO

 - Add platform bus support to virtio-pci

 - Various virtio fixes

 - Coding style, spelling cleanups

* tag 'uml-for-linus-6.3-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/uml/linux: (27 commits)
  Documentation: rust: Fix arch support table
  uml: vector: Remove unused definitions VECTOR_{WRITE,HEADERS}
  um: virt-pci: properly remove PCI device from bus
  um: virtio_uml: move device breaking into workqueue
  um: virtio_uml: mark device as unregistered when breaking it
  um: virtio_uml: free command if adding to virtqueue failed
  UML: define RUNTIME_DISCARD_EXIT
  virt-pci: add platform bus support
  um-virt-pci: Make max delay configurable
  um: virt-pci: implement pcibios_get_phb_of_node()
  um: Support LTO
  um: put power options in a menu
  um: Use CFLAGS_vmlinux
  um: Prevent building modules incompatible with MODVERSIONS
  um: Avoid pcap multiple definition errors
  um: Make the definition of cpu_data more compatible
  x86: um: vdso: Add '%rcx' and '%r11' to the syscall clobber list
  rust: arch/um: Add support for CONFIG_RUST under x86_64 UML
  rust: arch/um: Disable FP/SIMD instruction to match x86
  rust: arch/um: Use 'pie' relocation mode under UML
  ...
2023-03-01 09:13:00 -08:00

57 lines
1.4 KiB
Makefile

# SPDX-License-Identifier: GPL-2.0
core-y += arch/x86/crypto/
#
# Disable SSE and other FP/SIMD instructions to match normal x86
#
KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx
KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2
ifeq ($(CONFIG_X86_32),y)
START := 0x8048000
KBUILD_LDFLAGS += -m elf_i386
ELF_ARCH := i386
ELF_FORMAT := elf32-i386
CHECKFLAGS += -D__i386__
KBUILD_CFLAGS += $(call cc-option,-m32)
KBUILD_AFLAGS += $(call cc-option,-m32)
LINK-y += $(call cc-option,-m32)
LDS_EXTRA := -Ui386
export LDS_EXTRA
# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
include $(srctree)/arch/x86/Makefile_32.cpu
# prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
# Prevent sprintf in nfsd from being converted to strcpy and resulting in
# an unresolved reference.
cflags-y += -ffreestanding
KBUILD_CFLAGS += $(cflags-y)
else
START := 0x60000000
KBUILD_CFLAGS += -fno-builtin -m64
CHECKFLAGS += -m64 -D__x86_64__
KBUILD_AFLAGS += -m64
KBUILD_LDFLAGS += -m elf_x86_64
KBUILD_CPPFLAGS += -m64
ELF_ARCH := i386:x86-64
ELF_FORMAT := elf64-x86-64
# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib64
LINK-y += -m64
endif