/vm/os-freebsd-x86.32.hpp

http://github.com/abeaumont/factor · C++ Header · 44 lines · 38 code · 6 blank · 0 comment · 10 complexity · 11666c2d33ac4143994f869bd7ca3415 MD5 · raw file 

    

  1. #include <ucontext.h>
    2. 

  2. #include <machine/npx.h>
    3. 

  3. 

  4. namespace factor
    5. 

  5. {
    6. 

  6. 

  7. inline static unsigned int uap_fpu_status(void *uap)
    8. 

  8. {
    9. 

  9. 	ucontext_t *ucontext = (ucontext_t *)uap;
    10. 

  10. 	if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
    11. 

  11. 	{
    12. 

  12. 		struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
    13. 

  13. 		return x87->sv_env.en_sw;
    14. 

  14. 	}
    15. 

  15. 	else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
    16. 

  16. 	{
    17. 

  17. 		struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
    18. 

  18. 		return xmm->sv_env.en_sw | xmm->sv_env.en_mxcsr;
    19. 

  19. 	}
    20. 

  20. 	else
    21. 

  21. 		return 0;
    22. 

  22. }
    23. 

  23. 

  24. inline static void uap_clear_fpu_status(void *uap)
    25. 

  25. {
    26. 

  26. 	ucontext_t *ucontext = (ucontext_t *)uap;
    27. 

  27. 	if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_387)
    28. 

  28. 	{
    29. 

  29. 		struct save87 *x87 = (struct save87 *)(&ucontext->uc_mcontext.mc_fpstate);
    30. 

  30. 		x87->sv_env.en_sw = 0;
    31. 

  31. 	}
    32. 

  32. 	else if (ucontext->uc_mcontext.mc_fpformat == _MC_FPFMT_XMM)
    33. 

  33. 	{
    34. 

  34. 		struct savexmm *xmm = (struct savexmm *)(&ucontext->uc_mcontext.mc_fpstate);
    35. 

  35. 		xmm->sv_env.en_sw = 0;
    36. 

  36. 		xmm->sv_env.en_mxcsr &= 0xffffffc0;
    37. 

  37. 	}
    38. 

  38. }
    39. 

  39. 

  40. 

  41. #define UAP_STACK_POINTER(ucontext) (((ucontext_t *)ucontext)->uc_mcontext.mc_esp)
    42. 

  42. #define UAP_PROGRAM_COUNTER(ucontext) (((ucontext_t *)ucontext)->uc_mcontext.mc_eip)
    43. 

  43. 

  44. }
    45.