1/* 2 * Support for o32 Linux/MIPS ELF binaries. 3 * Author: Ralf Baechle (ralf@linux-mips.org) 4 * 5 * Copyright (C) 1999, 2001 Ralf Baechle 6 * Copyright (C) 1999, 2001 Silicon Graphics, Inc. 7 * 8 * Heavily inspired by the 32-bit Sparc compat code which is 9 * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com) 10 * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) 11 */ 12 13#define ELF_ARCH EM_MIPS 14#define ELF_CLASS ELFCLASS32 15#ifdef __MIPSEB__ 16#define ELF_DATA ELFDATA2MSB; 17#else /* __MIPSEL__ */ 18#define ELF_DATA ELFDATA2LSB; 19#endif 20 21/* ELF register definitions */ 22#define ELF_NGREG 45 23#define ELF_NFPREG 33 24 25typedef unsigned int elf_greg_t; 26typedef elf_greg_t elf_gregset_t[ELF_NGREG]; 27 28typedef double elf_fpreg_t; 29typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; 30 31/* 32 * This is used to ensure we don't load something for the wrong architecture. 33 */ 34#define elf_check_arch elfo32_check_arch 35 36#ifdef CONFIG_KVM_GUEST 37#define TASK32_SIZE 0x3fff8000UL 38#else 39#define TASK32_SIZE 0x7fff8000UL 40#endif 41#undef ELF_ET_DYN_BASE 42#define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) 43 44#include <asm/processor.h> 45 46#include <linux/elfcore.h> 47#include <linux/compat.h> 48#include <linux/math64.h> 49 50#define elf_prstatus elf_prstatus32 51struct elf_prstatus32 52{ 53 struct elf_siginfo pr_info; /* Info associated with signal */ 54 short pr_cursig; /* Current signal */ 55 unsigned int pr_sigpend; /* Set of pending signals */ 56 unsigned int pr_sighold; /* Set of held signals */ 57 pid_t pr_pid; 58 pid_t pr_ppid; 59 pid_t pr_pgrp; 60 pid_t pr_sid; 61 struct compat_timeval pr_utime; /* User time */ 62 struct compat_timeval pr_stime; /* System time */ 63 struct compat_timeval pr_cutime;/* Cumulative user time */ 64 struct compat_timeval pr_cstime;/* Cumulative system time */ 65 elf_gregset_t pr_reg; /* GP registers */ 66 int pr_fpvalid; /* True if math co-processor being used. */ 67}; 68 69#define elf_prpsinfo elf_prpsinfo32 70struct elf_prpsinfo32 71{ 72 char pr_state; /* numeric process state */ 73 char pr_sname; /* char for pr_state */ 74 char pr_zomb; /* zombie */ 75 char pr_nice; /* nice val */ 76 unsigned int pr_flag; /* flags */ 77 __kernel_uid_t pr_uid; 78 __kernel_gid_t pr_gid; 79 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; 80 /* Lots missing */ 81 char pr_fname[16]; /* filename of executable */ 82 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ 83}; 84 85#define elf_caddr_t u32 86#define init_elf_binfmt init_elf32_binfmt 87 88#define jiffies_to_timeval jiffies_to_compat_timeval 89static inline void 90jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) 91{ 92 /* 93 * Convert jiffies to nanoseconds and separate with 94 * one divide. 95 */ 96 u64 nsec = (u64)jiffies * TICK_NSEC; 97 u32 rem; 98 value->tv_sec = div_u64_rem(nsec, NSEC_PER_SEC, &rem); 99 value->tv_usec = rem / NSEC_PER_USEC; 100} 101 102#undef TASK_SIZE 103#define TASK_SIZE TASK_SIZE32 104 105#undef ns_to_timeval 106#define ns_to_timeval ns_to_compat_timeval 107 108#include "../../../fs/binfmt_elf.c" 109