include/arch/i386/fpu.h

   1 #ifndef FPU_H
   2 #define FPU_H
   3
   4 /* x87 FPU state, MMX Technolodgy.
   5  * 108 bytes.*/
   6 struct fpu_regs_s {
   7         u16_t fp_control;     /* control */
   8         u16_t fp_unused_1;
   9         u16_t fp_status;      /* status */
  10         u16_t fp_unused_2;
  11         u16_t fp_tag;         /* register tags */
  12         u16_t fp_unused_3;
  13         u32_t fp_eip;         /* eip at failed instruction */
  14         u16_t fp_cs;          /* cs at failed instruction */
  15         u16_t fp_opcode;      /* opcode of failed instruction */
  16         u32_t fp_dp;          /* data address */
  17         u16_t fp_ds;          /* data segment */
  18         u16_t fp_unused_4;
  19         u16_t fp_st_regs[8][5]; /* 8 80-bit FP registers */
  20 };
  21
  22 /* x87 FPU, MMX Technolodgy and SSE state.
  23  * 512 bytes (if you need size use FPU_XFP_SIZE). */
  24 struct xfp_save {
  25         u16_t fp_control;       /* control */
  26         u16_t fp_status;        /* status */
  27         u16_t fp_tag;           /* register tags */
  28         u16_t fp_opcode;        /* opcode of failed instruction */
  29         u32_t fp_eip;           /* eip at failed instruction */
  30         u16_t fp_cs;            /* cs at failed instruction */
  31         u16_t fp_unused_1;
  32         u32_t fp_dp;            /* data address */
  33         u16_t fp_ds;            /* data segment */
  34         u16_t fp_unused_2;
  35         u32_t fp_mxcsr;         /* MXCSR */
  36         u32_t fp_mxcsr_mask;    /* MXCSR_MASK */
  37         u16_t fp_st_regs[8][8];   /* 128 bytes for ST/MM regs */
  38         u32_t fp_xreg_word[32]; /* space for 8 128-bit XMM registers */
  39         u32_t fp_padding[56];
  40 };
  41
  42 /* Size of xfp_save structure. */
  43 #define FPU_XFP_SIZE            512
  44
  45 union fpu_state_u {
  46         struct fpu_regs_s fpu_regs;
  47         struct xfp_save xfp_regs;
  48 };
  49
  50 #endif /* #ifndef FPU_H */