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| author | Al Viro <viro@zeniv.linux.org.uk> | 2020-06-14 06:18:12 +0200 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2021-01-06 14:42:49 +0100 |
| commit | 0bb87f051e4282afb5f472807c7244b21cf515c7 (patch) | |
| tree | 89d3c3bbcd1f78a1a22303d79e931c7812abf29b /arch/mips/kernel/binfmt_elfn32.c | |
| parent | mips: don't bother with ELF_CORE_EFLAGS (diff) | |
| download | linux-0bb87f051e4282afb5f472807c7244b21cf515c7.tar.xz linux-0bb87f051e4282afb5f472807c7244b21cf515c7.zip | |
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 'arch/mips/kernel/binfmt_elfn32.c')
| -rw-r--r-- | arch/mips/kernel/binfmt_elfn32.c | 65 |
1 files changed, 0 insertions, 65 deletions
diff --git a/arch/mips/kernel/binfmt_elfn32.c b/arch/mips/kernel/binfmt_elfn32.c deleted file mode 100644 index 573f2a177da6..000000000000 --- a/arch/mips/kernel/binfmt_elfn32.c +++ /dev/null @@ -1,65 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0 -/* - * Support for n32 Linux/MIPS ELF binaries. - * Author: Ralf Baechle (ralf@linux-mips.org) - * - * Copyright (C) 1999, 2001 Ralf Baechle - * Copyright (C) 1999, 2001 Silicon Graphics, Inc. - * - * Heavily inspired by the 32-bit Sparc compat code which is - * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com) - * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) - */ - -#define ELF_ARCH EM_MIPS -#define ELF_CLASS ELFCLASS32 -#ifdef __MIPSEB__ -#define ELF_DATA ELFDATA2MSB; -#else /* __MIPSEL__ */ -#define ELF_DATA ELFDATA2LSB; -#endif - -/* ELF register definitions */ -#define ELF_NGREG 45 -#define ELF_NFPREG 33 - -typedef unsigned long elf_greg_t; -typedef elf_greg_t elf_gregset_t[ELF_NGREG]; - -typedef double elf_fpreg_t; -typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; - -/* - * This is used to ensure we don't load something for the wrong architecture. - */ -#define elf_check_arch elfn32_check_arch - -#include <asm/processor.h> -#include <linux/elfcore.h> -#include <linux/compat.h> -#include <linux/math64.h> -#include <linux/elfcore-compat.h> - -#define elf_prstatus elf_prstatus32 -#define elf_prstatus_common compat_elf_prstatus_common -struct elf_prstatus32 -{ - struct compat_elf_prstatus_common common; - elf_gregset_t pr_reg; /* GP registers */ - int pr_fpvalid; /* True if math co-processor being used. */ -}; -#define elf_prpsinfo compat_elf_prpsinfo - -#define init_elf_binfmt init_elfn32_binfmt - -#undef ns_to_kernel_old_timeval -#define ns_to_kernel_old_timeval ns_to_old_timeval32 - -/* - * Some data types as stored in coredump. - */ -#define user_long_t compat_long_t -#define user_siginfo_t compat_siginfo_t -#define copy_siginfo_to_external copy_siginfo_to_external32 - -#include "../../../fs/binfmt_elf.c" |