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authorAl Viro <viro@zeniv.linux.org.uk>2020-06-14 00:18:12 -0400
committerAl Viro <viro@zeniv.linux.org.uk>2021-01-06 08:42:49 -0500
commit0bb87f051e4282afb5f472807c7244b21cf515c7 (patch)
tree89d3c3bbcd1f78a1a22303d79e931c7812abf29b /fs/Kconfig.binfmt
parent2fb33bec053b01e616fab921aab4d4775d374e8f (diff)
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mips compat: switch to compat_binfmt_elf.c
Like amd64, mips has two 32bit ABIs - o32 and n32. Unlike amd64, it does not use compat_binfmt_elf.c for either of those; each of those ABIs has a binfmt handler of its own, both very similar to fs/compat_binfmt_elf.c. And the same technics as we use on amd64 can be used to make fs/compat_binfmt_elf.c handle both. * merge elfo32_check_arch() with elfn32_check_arch(), make that serve as compat_elf_check_arch(). Note that SET_PERSONALITY2() is already the same for all ABI variants - it looks at the elf header to choose the flags to set. * add asm/elfcore-compat.h, using the bigger (n32) variant of elf32_prstatus as compat_elf_prstatus there. * make PRSTATUS_SIZE() and SET_PR_FPVALID() choose the right layout, same as done for amd64. test_thread_flag(TIF_32BIT_REGS) is used as the predicate. Voila - we are rid of binfmt_elf{n,o}32.c; fs/compat_binfmt_elf.c is used, same as for all other ELF-supporting 64bit architectures that need 32bit compat. Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/Kconfig.binfmt')
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