root/include/asm-x86/user32.h

INCLUDED FROM

#ifndef ASM_X86__USER32_H
#define ASM_X86__USER32_H

/* IA32 compatible user structures for ptrace.
 * These should be used for 32bit coredumps too. */

struct user_i387_ia32_struct {
        u32     cwd;
        u32     swd;
        u32     twd;
        u32     fip;
        u32     fcs;
        u32     foo;
        u32     fos;
        u32     st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
};

/* FSAVE frame with extensions */
struct user32_fxsr_struct {
        unsigned short  cwd;
        unsigned short  swd;
        unsigned short  twd;    /* not compatible to 64bit twd */
        unsigned short  fop;
        int     fip;
        int     fcs;
        int     foo;
        int     fos;
        int     mxcsr;
        int     reserved;
        int     st_space[32];   /* 8*16 bytes for each FP-reg = 128 bytes */
        int     xmm_space[32];  /* 8*16 bytes for each XMM-reg = 128 bytes */
        int     padding[56];
};

struct user_regs_struct32 {
        __u32 ebx, ecx, edx, esi, edi, ebp, eax;
        unsigned short ds, __ds, es, __es;
        unsigned short fs, __fs, gs, __gs;
        __u32 orig_eax, eip;
        unsigned short cs, __cs;
        __u32 eflags, esp;
        unsigned short ss, __ss;
};

struct user32 {
  struct user_regs_struct32 regs; /* Where the registers are actually stored */
  int u_fpvalid;                /* True if math co-processor being used. */
                                /* for this mess. Not yet used. */
  struct user_i387_ia32_struct i387;    /* Math Co-processor registers. */
/* The rest of this junk is to help gdb figure out what goes where */
  __u32 u_tsize;        /* Text segment size (pages). */
  __u32 u_dsize;        /* Data segment size (pages). */
  __u32 u_ssize;        /* Stack segment size (pages). */
  __u32 start_code;     /* Starting virtual address of text. */
  __u32 start_stack;    /* Starting virtual address of stack area.
                                   This is actually the bottom of the stack,
                                   the top of the stack is always found in the
                                   esp register.  */
  __u32 signal;                 /* Signal that caused the core dump. */
  int reserved;                 /* No __u32er used */
  __u32 u_ar0;  /* Used by gdb to help find the values for */
                                /* the registers. */
  __u32 u_fpstate;      /* Math Co-processor pointer. */
  __u32 magic;          /* To uniquely identify a core file */
  char u_comm[32];              /* User command that was responsible */
  int u_debugreg[8];
};


#endif /* ASM_X86__USER32_H */