ia64/linux-2.6.18-xen.hg

view arch/mips/kernel/binfmt_elfn32.c @ 452:c7ed6fe5dca0

kexec: dont initialise regions in reserve_memory()

There is no need to initialise efi_memmap_res and boot_param_res in
reserve_memory() for the initial xen domain as it is done in
machine_kexec_setup_resources() using values from the kexec hypercall.

Signed-off-by: Simon Horman <horms@verge.net.au>
author Keir Fraser <keir.fraser@citrix.com>
date Thu Feb 28 10:55:18 2008 +0000 (2008-02-28)
parents 831230e53067
children
line source
1 /*
2 * Support for n32 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 */
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
20 /* ELF register definitions */
21 #define ELF_NGREG 45
22 #define ELF_NFPREG 33
24 typedef unsigned long elf_greg_t;
25 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
27 typedef double elf_fpreg_t;
28 typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG];
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 ((__h->e_flags & EF_MIPS_ABI) != 0)) \
44 __res = 0; \
45 \
46 __res; \
47 })
49 #define TASK32_SIZE 0x7fff8000UL
50 #undef ELF_ET_DYN_BASE
51 #define ELF_ET_DYN_BASE (TASK32_SIZE / 3 * 2)
53 #include <asm/processor.h>
54 #include <linux/module.h>
55 #include <linux/elfcore.h>
56 #include <linux/compat.h>
58 #define elf_prstatus elf_prstatus32
59 struct elf_prstatus32
60 {
61 struct elf_siginfo pr_info; /* Info associated with signal */
62 short pr_cursig; /* Current signal */
63 unsigned int pr_sigpend; /* Set of pending signals */
64 unsigned int pr_sighold; /* Set of held signals */
65 pid_t pr_pid;
66 pid_t pr_ppid;
67 pid_t pr_pgrp;
68 pid_t pr_sid;
69 struct compat_timeval pr_utime; /* User time */
70 struct compat_timeval pr_stime; /* System time */
71 struct compat_timeval pr_cutime;/* Cumulative user time */
72 struct compat_timeval pr_cstime;/* Cumulative system time */
73 elf_gregset_t pr_reg; /* GP registers */
74 int pr_fpvalid; /* True if math co-processor being used. */
75 };
77 #define elf_prpsinfo elf_prpsinfo32
78 struct elf_prpsinfo32
79 {
80 char pr_state; /* numeric process state */
81 char pr_sname; /* char for pr_state */
82 char pr_zomb; /* zombie */
83 char pr_nice; /* nice val */
84 unsigned int pr_flag; /* flags */
85 __kernel_uid_t pr_uid;
86 __kernel_gid_t pr_gid;
87 pid_t pr_pid, pr_ppid, pr_pgrp, pr_sid;
88 /* Lots missing */
89 char pr_fname[16]; /* filename of executable */
90 char pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
91 };
93 #define elf_addr_t u32
94 #define elf_caddr_t u32
95 #define init_elf_binfmt init_elfn32_binfmt
97 #define jiffies_to_timeval jiffies_to_compat_timeval
98 static __inline__ void
99 jiffies_to_compat_timeval(unsigned long jiffies, struct compat_timeval *value)
100 {
101 /*
102 * Convert jiffies to nanoseconds and seperate with
103 * one divide.
104 */
105 u64 nsec = (u64)jiffies * TICK_NSEC;
106 long rem;
107 value->tv_sec = div_long_long_rem(nsec, NSEC_PER_SEC, &rem);
108 value->tv_usec = rem / NSEC_PER_USEC;
109 }
111 #define ELF_CORE_EFLAGS EF_MIPS_ABI2
113 MODULE_DESCRIPTION("Binary format loader for compatibility with n32 Linux/MIPS binaries");
114 MODULE_AUTHOR("Ralf Baechle (ralf@linux-mips.org)");
116 #undef MODULE_DESCRIPTION
117 #undef MODULE_AUTHOR
119 #undef TASK_SIZE
120 #define TASK_SIZE TASK_SIZE32
122 #include "../../../fs/binfmt_elf.c"