projects / GitHub / mt8127 / android_kernel_alcatel_ttab.git / blame
| Commit | Line | Data |
|---|---|---|
| 1da177e4 LT |
1 | /* |
| 2 | * Support for o32 Linux/MIPS ELF binaries. | |
| 3 | * | |
| 4 | * Copyright (C) 1999, 2001 Ralf Baechle | |
| 5 | * Copyright (C) 1999, 2001 Silicon Graphics, Inc. | |
| 6 | * | |
| 7 | * Heavily inspired by the 32-bit Sparc compat code which is | |
| 8 | * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com) | |
| 9 | * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek (jj@ultra.linux.cz) | |
| 10 | */ | |
| 11 | ||
| 12 | #define ELF_ARCH EM_MIPS | |
| 13 | #define ELF_CLASS ELFCLASS32 | |
| 14 | #ifdef __MIPSEB__ | |
| 15 | #define ELF_DATA ELFDATA2MSB; | |
| 16 | #else /* __MIPSEL__ */ | |
| 17 | #define ELF_DATA ELFDATA2LSB; | |
| 18 | #endif | |
| 19 | ||
| 20 | /* ELF register definitions */ | |
| 21 | #define ELF_NGREG 45 | |
| 22 | #define ELF_NFPREG 33 | |
| 23 | ||
| 24 | typedef unsigned int elf_greg_t; | |
| 25 | typedef elf_greg_t elf_gregset_t[ELF_NGREG]; | |
| 26 | ||
| 27 | typedef double elf_fpreg_t; | |
| 28 | typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; | |
| 29 | ||
| 30 | /* | |
| 31 | * This is used to ensure we don't load something for the wrong architecture. | |
| 32 | */ | |
| 33 | #define elf_check_arch(hdr) \ | |
| 34 | ({ \ | |
| 35 | int __res = 1; \ | |
| 36 | struct elfhdr *__h = (hdr); \ | |
| 37 | \ | |
| 38 | if (__h->e_machine != EM_MIPS) \ | |
| 39 | __res = 0; \ | |
| 40 | if (__h->e_ident[EI_CLASS] != ELFCLASS32) \ | |
| 41 | __res = 0; \ | |
| 42 | if ((__h->e_flags & EF_MIPS_ABI2) != 0) \ | |
| 43 | __res = 0; \ | |
| 44 | if (((__h->e_flags & EF_MIPS_ABI) != 0) && \ | |
| 45 | ((__h->e_flags & EF_MIPS_ABI) != EF_MIPS_ABI_O32)) \ | |
| 46 | __res = 0; \ | |
| 47 | \ | |
| 48 | __res; \ | |
| 49 | }) | |
| 50 | ||
| 51 | #define TASK32_SIZE 0x7fff8000UL | |
| 52 | #undef ELF_ET_DYN_BASE | |
| 53 | #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2) | |
| 54 | ||
| 55 | #include <asm/processor.h> | |
| 56 | #include <linux/module.h> | |
| 57 | #include <linux/config.h> | |
| 58 | #include <linux/elfcore.h> | |
| 59 | #include <linux/compat.h> | |
| 60 | ||
| 61 | #define elf_prstatus elf_prstatus32 | |
| 62 | struct elf_prstatus32 | |
| 63 | { | |
| 64 | struct elf_siginfo pr_info; /* Info associated with signal */ | |
| 65 | short pr_cursig; /* Current signal */ | |
| 66 | unsigned int pr_sigpend; /* Set of pending signals */ | |
| 67 | unsigned int pr_sighold; /* Set of held signals */ | |
| 68 | pid_t pr_pid; | |
| 69 | pid_t pr_ppid; | |
| 70 | pid_t pr_pgrp; | |
| 71 | pid_t pr_sid; | |
| 72 | struct compat_timeval pr_utime; /* User time */ | |
| 73 | struct compat_timeval pr_stime; /* System time */ | |
| 74 | struct compat_timeval pr_cutime;/* Cumulative user time */ | |
| 75 | struct compat_timeval pr_cstime;/* Cumulative system time */ | |
| 76 | elf_gregset_t pr_reg; /* GP registers */ | |
| 77 | int pr_fpvalid; /* True if math co-processor being used. */ | |
| 78 | }; | |
| 79 | ||
| 80 | #define elf_prpsinfo elf_prpsinfo32 | |
| 81 | struct elf_prpsinfo32 | |
| 82 | { | |
| 83 | char pr_state; /* numeric process state */ | |
| 84 | char pr_sname; /* char for pr_state */ | |
| 85 | char pr_zomb; /* zombie */ | |
| 86 | char pr_nice; /* nice val */ | |
| 87 | unsigned int pr_flag; /* flags */ | |
| 88 | __kernel_uid_t pr_uid; | |
| 89 | __kernel_gid_t pr_gid; | |
| 90 | pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid; | |
| 91 | /* Lots missing */ | |
| 92 | char pr_fname[16]; /* filename of executable */ | |
| 93 | char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */ | |
| 94 | }; | |
| 95 | ||
| 96 | #define elf_addr_t u32 | |
| 97 | #define elf_caddr_t u32 | |
| 98 | #define init_elf_binfmt init_elf32_binfmt | |
| 99 | ||
| 100 | #define jiffies_to_timeval jiffies_to_compat_timeval | |
| b053c98f | 101 | static inline void |
| 1da177e4 LT |
102 | jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value) |
| 103 | { | |
| 104 | /* | |
| 105 | * Convert jiffies to nanoseconds and seperate with | |
| 106 | * one divide. | |
| 107 | */ | |
| 42a3b4f2 | 108 | u64 nsec = (u64)jiffies * TICK_NSEC; |
| 1da177e4 LT |
109 | value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &value->tv_usec); |
| 110 | value->tv_usec /= NSEC_PER_USEC; | |
| 111 | } | |
| 112 | ||
| 113 | #undef ELF_CORE_COPY_REGS | |
| 114 | #define ELF_CORE_COPY_REGS(_dest,_regs) elf32_core_copy_regs(_dest,_regs); | |
| 115 | ||
| b053c98f | 116 | void elf32_core_copy_regs(elf_gregset_t grp, struct pt_regs *regs) |
| 1da177e4 LT |
117 | { |
| 118 | int i; | |
| 119 | ||
| b053c98f RB |
120 | for (i = 0; i < EF_R0; i++) |
| 121 | grp[i] = 0; | |
| 122 | grp[EF_R0] = 0; | |
| 123 | for (i = 1; i <= 31; i++) | |
| 124 | grp[EF_R0 + i] = (elf_greg_t) regs->regs[i]; | |
| 125 | grp[EF_R26] = 0; | |
| 126 | grp[EF_R27] = 0; | |
| 127 | grp[EF_LO] = (elf_greg_t) regs->lo; | |
| 128 | grp[EF_HI] = (elf_greg_t) regs->hi; | |
| 129 | grp[EF_CP0_EPC] = (elf_greg_t) regs->cp0_epc; | |
| 130 | grp[EF_CP0_BADVADDR] = (elf_greg_t) regs->cp0_badvaddr; | |
| 131 | grp[EF_CP0_STATUS] = (elf_greg_t) regs->cp0_status; | |
| 132 | grp[EF_CP0_CAUSE] = (elf_greg_t) regs->cp0_cause; | |
| 133 | #ifdef EF_UNUSED0 | |
| 134 | grp[EF_UNUSED0] = 0; | |
| 135 | #endif | |
| 1da177e4 LT |
136 | } |
| 137 | ||
| 138 | MODULE_DESCRIPTION("Binary format loader for compatibility with o32 Linux/MIPS binaries"); | |
| 139 | MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)"); | |
| 140 | ||
| 141 | #undef MODULE_DESCRIPTION | |
| 142 | #undef MODULE_AUTHOR | |
| 143 | ||
| 144 | #include "../../../fs/binfmt_elf.c" |