diff options
Diffstat (limited to 'arch/mips/kernel/binfmt_elfo32.c')
| -rw-r--r-- | arch/mips/kernel/binfmt_elfo32.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index 202e581e6096..7faf5f2bee25 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -28,6 +28,18 @@ typedef double elf_fpreg_t; typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; /* + * In order to be sure that we don't attempt to execute an O32 binary which + * requires 64 bit FP (FR=1) on a system which does not support it we refuse + * to execute any binary which has bits specified by the following macro set + * in its ELF header flags. + */ +#ifdef CONFIG_MIPS_O32_FP64_SUPPORT +# define __MIPS_O32_FP64_MUST_BE_ZERO 0 +#else +# define __MIPS_O32_FP64_MUST_BE_ZERO EF_MIPS_FP64 +#endif + +/* * This is used to ensure we don't load something for the wrong architecture. */ #define elf_check_arch(hdr) \ @@ -44,6 +56,8 @@ typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; if (((__h->e_flags & EF_MIPS_ABI) != 0) && \ ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \ __res = 0; \ + if (__h->e_flags & __MIPS_O32_FP64_MUST_BE_ZERO) \ + __res = 0; \ \ __res; \ }) |