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   1 /*
   2  * IA-32 ELF core dump support.
   3  *
   4  * Copyright (C) 2003 Arun Sharma <arun.sharma@intel.com>
   5  *
   6  * Derived from the x86_64 version
   7  */
   8 #ifndef _ELFCORE32_H_
   9 #define _ELFCORE32_H_
  10
  11 #include <asm/intrinsics.h>
  12 #include <asm/uaccess.h>
  13
  14 #define USE_ELF_CORE_DUMP 1
  15
  16 /* Override elfcore.h */
  17 #define _LINUX_ELFCORE_H 1
  18 typedef unsigned int elf_greg_t;
  19
  20 #define ELF_NGREG (sizeof (struct user_regs_struct32) / sizeof(elf_greg_t))
  21 typedef elf_greg_t elf_gregset_t[ELF_NGREG];
  22
  23 typedef struct ia32_user_i387_struct elf_fpregset_t;
  24 typedef struct ia32_user_fxsr_struct elf_fpxregset_t;
  25
  26 struct elf_siginfo
  27 {
  28         int     si_signo;                       /* signal number */
  29         int     si_code;                        /* extra code */
  30         int     si_errno;                       /* errno */
  31 };
  32
  33 #define jiffies_to_timeval(a,b) do { (b)->tv_usec = 0; (b)->tv_sec = (a)/HZ; }while(0)
  34
  35 struct elf_prstatus
  36 {
  37         struct elf_siginfo pr_info;     /* Info associated with signal */
  38         short   pr_cursig;              /* Current signal */
  39         unsigned int pr_sigpend;        /* Set of pending signals */
  40         unsigned int pr_sighold;        /* Set of held signals */
  41         pid_t   pr_pid;
  42         pid_t   pr_ppid;
  43         pid_t   pr_pgrp;
  44         pid_t   pr_sid;
  45         struct compat_timeval pr_utime; /* User time */
  46         struct compat_timeval pr_stime; /* System time */
  47         struct compat_timeval pr_cutime;        /* Cumulative user time */
  48         struct compat_timeval pr_cstime;        /* Cumulative system time */
  49         elf_gregset_t pr_reg;   /* GP registers */
  50         int pr_fpvalid;         /* True if math co-processor being used.  */
  51 };
  52
  53 #define ELF_PRARGSZ     (80)    /* Number of chars for args */
  54
  55 struct elf_prpsinfo
  56 {
  57         char    pr_state;       /* numeric process state */
  58         char    pr_sname;       /* char for pr_state */
  59         char    pr_zomb;        /* zombie */
  60         char    pr_nice;        /* nice val */
  61         unsigned int pr_flag;   /* flags */
  62         __u16   pr_uid;
  63         __u16   pr_gid;
  64         pid_t   pr_pid, pr_ppid, pr_pgrp, pr_sid;
  65         /* Lots missing */
  66         char    pr_fname[16];   /* filename of executable */
  67         char    pr_psargs[ELF_PRARGSZ]; /* initial part of arg list */
  68 };
  69
  70 #define ELF_CORE_COPY_REGS(pr_reg, regs)                \
  71         pr_reg[0] = regs->r11;                          \
  72         pr_reg[1] = regs->r9;                           \
  73         pr_reg[2] = regs->r10;                          \
  74         pr_reg[3] = regs->r14;                          \
  75         pr_reg[4] = regs->r15;                          \
  76         pr_reg[5] = regs->r13;                          \
  77         pr_reg[6] = regs->r8;                           \
  78         pr_reg[7] = regs->r16 & 0xffff;                 \
  79         pr_reg[8] = (regs->r16 >> 16) & 0xffff;         \
  80         pr_reg[9] = (regs->r16 >> 32) & 0xffff;         \
  81         pr_reg[10] = (regs->r16 >> 48) & 0xffff;        \
  82         pr_reg[11] = regs->r1;                          \
  83         pr_reg[12] = regs->cr_iip;                      \
  84         pr_reg[13] = regs->r17 & 0xffff;                \
  85         pr_reg[14] = ia64_getreg(_IA64_REG_AR_EFLAG);   \
  86         pr_reg[15] = regs->r12;                         \
  87         pr_reg[16] = (regs->r17 >> 16) & 0xffff;
  88
  89 static inline void elf_core_copy_regs(elf_gregset_t *elfregs,
  90                                       struct pt_regs *regs)
  91 {
  92         ELF_CORE_COPY_REGS((*elfregs), regs)
  93 }
  94
  95 static inline int elf_core_copy_task_regs(struct task_struct *t,
  96                                           elf_gregset_t* elfregs)
  97 {
  98         ELF_CORE_COPY_REGS((*elfregs), task_pt_regs(t));
  99         return 1;
 100 }
 101
 102 static inline int
 103 elf_core_copy_task_fpregs(struct task_struct *tsk, struct pt_regs *regs, elf_fpregset_t *fpu)
 104 {
 105         struct ia32_user_i387_struct *fpstate = (void*)fpu;
 106         mm_segment_t old_fs;
 107
 108         if (!tsk_used_math(tsk))
 109                 return 0;
 110
 111         old_fs = get_fs();
 112         set_fs(KERNEL_DS);
 113         save_ia32_fpstate(tsk, (struct ia32_user_i387_struct __user *) fpstate);
 114         set_fs(old_fs);
 115
 116         return 1;
 117 }
 118
 119 #define ELF_CORE_COPY_XFPREGS 1
 120 static inline int
 121 elf_core_copy_task_xfpregs(struct task_struct *tsk, elf_fpxregset_t *xfpu)
 122 {
 123         struct ia32_user_fxsr_struct *fpxstate = (void*) xfpu;
 124         mm_segment_t old_fs;
 125
 126         if (!tsk_used_math(tsk))
 127                 return 0;
 128
 129         old_fs = get_fs();
 130         set_fs(KERNEL_DS);
 131         save_ia32_fpxstate(tsk, (struct ia32_user_fxsr_struct __user *) fpxstate);
 132         set_fs(old_fs);
 133
 134         return 1;
 135 }
 136
 137 #endif /* _ELFCORE32_H_ */