arch/x86/include/asm/user32.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef _ASM_X86_USER32_H
   3 #define _ASM_X86_USER32_H
   4
   5 /* IA32 compatible user structures for ptrace.
   6  * These should be used for 32bit coredumps too. */
   7
   8 struct user_i387_ia32_struct {
   9         u32     cwd;
  10         u32     swd;
  11         u32     twd;
  12         u32     fip;
  13         u32     fcs;
  14         u32     foo;
  15         u32     fos;
  16         u32     st_space[20];   /* 8*10 bytes for each FP-reg = 80 bytes */
  17 };
  18
  19 /* FSAVE frame with extensions */
  20 struct user32_fxsr_struct {
  21         unsigned short  cwd;
  22         unsigned short  swd;
  23         unsigned short  twd;    /* not compatible to 64bit twd */
  24         unsigned short  fop;
  25         int     fip;
  26         int     fcs;
  27         int     foo;
  28         int     fos;
  29         int     mxcsr;
  30         int     reserved;
  31         int     st_space[32];   /* 8*16 bytes for each FP-reg = 128 bytes */
  32         int     xmm_space[32];  /* 8*16 bytes for each XMM-reg = 128 bytes */
  33         int     padding[56];
  34 };
  35
  36 struct user_regs_struct32 {
  37         __u32 ebx, ecx, edx, esi, edi, ebp, eax;
  38         unsigned short ds, __ds, es, __es;
  39         unsigned short fs, __fs, gs, __gs;
  40         __u32 orig_eax, eip;
  41         unsigned short cs, __cs;
  42         __u32 eflags, esp;
  43         unsigned short ss, __ss;
  44 };
  45
  46 struct user32 {
  47   struct user_regs_struct32 regs; /* Where the registers are actually stored */
  48   int u_fpvalid;                /* True if math co-processor being used. */
  49                                 /* for this mess. Not yet used. */
  50   struct user_i387_ia32_struct i387;    /* Math Co-processor registers. */
  51 /* The rest of this junk is to help gdb figure out what goes where */
  52   __u32 u_tsize;        /* Text segment size (pages). */
  53   __u32 u_dsize;        /* Data segment size (pages). */
  54   __u32 u_ssize;        /* Stack segment size (pages). */
  55   __u32 start_code;     /* Starting virtual address of text. */
  56   __u32 start_stack;    /* Starting virtual address of stack area.
  57                                    This is actually the bottom of the stack,
  58                                    the top of the stack is always found in the
  59                                    esp register.  */
  60   __u32 signal;                 /* Signal that caused the core dump. */
  61   int reserved;                 /* No __u32er used */
  62   __u32 u_ar0;  /* Used by gdb to help find the values for */
  63                                 /* the registers. */
  64   __u32 u_fpstate;      /* Math Co-processor pointer. */
  65   __u32 magic;          /* To uniquely identify a core file */
  66   char u_comm[32];              /* User command that was responsible */
  67   int u_debugreg[8];
  68 };
  69
  70
  71 #endif /* _ASM_X86_USER32_H */