diff options
Diffstat (limited to 'arch/mips/kernel/binfmt_elfo32.c')
| -rw-r--r-- | arch/mips/kernel/binfmt_elfo32.c | 39 |
1 files changed, 34 insertions, 5 deletions
diff --git a/arch/mips/kernel/binfmt_elfo32.c b/arch/mips/kernel/binfmt_elfo32.c index ff448233dab..7faf5f2bee2 100644 --- a/arch/mips/kernel/binfmt_elfo32.c +++ b/arch/mips/kernel/binfmt_elfo32.c @@ -6,7 +6,7 @@ * * 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) + * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) */ #define ELF_ARCH EM_MIPS @@ -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) \ @@ -44,13 +56,19 @@ 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; \ }) +#ifdef CONFIG_KVM_GUEST +#define TASK32_SIZE 0x3fff8000UL +#else #define TASK32_SIZE 0x7fff8000UL +#endif #undef ELF_ET_DYN_BASE -#define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) +#define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) #include <asm/processor.h> @@ -86,8 +104,8 @@ struct elf_prstatus32 pid_t pr_ppid; pid_t pr_pgrp; pid_t pr_sid; - struct compat_timeval pr_utime; /* User time */ - struct compat_timeval pr_stime; /* System time */ + struct compat_timeval pr_utime; /* User time */ + struct compat_timeval pr_stime; /* System time */ struct compat_timeval pr_cutime;/* Cumulative user time */ struct compat_timeval pr_cstime;/* Cumulative system time */ elf_gregset_t pr_reg; /* GP registers */ @@ -107,7 +125,7 @@ struct elf_prpsinfo32 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; /* Lots missing */ char pr_fname[16]; /* filename of executable */ - char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ + char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ }; #define elf_caddr_t u32 @@ -158,4 +176,15 @@ MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)"); #undef TASK_SIZE #define TASK_SIZE TASK_SIZE32 +#undef cputime_to_timeval +#define cputime_to_timeval cputime_to_compat_timeval +static __inline__ void +cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value) +{ + unsigned long jiffies = cputime_to_jiffies(cputime); + + value->tv_usec = (jiffies % HZ) * (1000000L / HZ); + value->tv_sec = jiffies / HZ; +} + #include "../../../fs/binfmt_elf.c" |