vm/os-macosx-x86.64.hpp

   1 #include <sys/ucontext.h>
   2
   3 namespace factor {
   4
   5 // Fault handler information.  MacOSX version.
   6 // Copyright (C) 1993-1999, 2002-2003  Bruno Haible <clisp.org at bruno>
   7 // Copyright (C) 2003  Paolo Bonzini <gnu.org at bonzini>
   8
   9 // Used under BSD license with permission from Paolo Bonzini and Bruno Haible,
  10 // 2005-03-10:
  11
  12 // http://sourceforge.net/mailarchive/message.php?msg_name=200503102200.32002.bruno%40clisp.org
  13
  14 // Modified for Factor by Slava Pestov and Daniel Ehrenberg
  15 #define MACH_EXC_STATE_TYPE x86_exception_state64_t
  16 #define MACH_EXC_STATE_FLAVOR x86_EXCEPTION_STATE64
  17 #define MACH_EXC_STATE_COUNT x86_EXCEPTION_STATE64_COUNT
  18
  19 #define MACH_EXC_INTEGER_DIV EXC_I386_DIV
  20
  21 #define MACH_THREAD_STATE_TYPE x86_thread_state64_t
  22 #define MACH_THREAD_STATE_FLAVOR x86_THREAD_STATE64
  23 #define MACH_THREAD_STATE_COUNT MACHINE_THREAD_STATE_COUNT
  24
  25 #define MACH_FLOAT_STATE_TYPE x86_float_state64_t
  26 #define MACH_FLOAT_STATE_FLAVOR x86_FLOAT_STATE64
  27 #define MACH_FLOAT_STATE_COUNT x86_FLOAT_STATE64_COUNT
  28
  29 #if __DARWIN_UNIX03
  30 #define MACH_EXC_STATE_FAULT(exc_state) (exc_state)->__faultvaddr
  31 #define MACH_STACK_POINTER(thr_state) (thr_state)->__rsp
  32 #define MACH_PROGRAM_COUNTER(thr_state) (thr_state)->__rip
  33 #define UAP_SS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->__ss)
  34 #define UAP_FS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->__fs)
  35
  36 #define MXCSR(float_state) (float_state)->__fpu_mxcsr
  37 #define X87SW(float_state) (float_state)->__fpu_fsw
  38 #else
  39 #define MACH_EXC_STATE_FAULT(exc_state) (exc_state)->faultvaddr
  40 #define MACH_STACK_POINTER(thr_state) (thr_state)->rsp
  41 #define MACH_PROGRAM_COUNTER(thr_state) (thr_state)->rip
  42 #define UAP_SS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->ss)
  43 #define UAP_FS(ucontext) &(((ucontext_t*)(ucontext))->uc_mcontext->fs)
  44
  45 #define MXCSR(float_state) (float_state)->fpu_mxcsr
  46 #define X87SW(float_state) (float_state)->fpu_fsw
  47 #endif
  48
  49 #define UAP_PROGRAM_COUNTER(ucontext) MACH_PROGRAM_COUNTER(UAP_SS(ucontext))
  50
  51 inline static unsigned int mach_fpu_status(x86_float_state64_t* float_state) {
  52   unsigned short x87sw;
  53   memcpy(&x87sw, &X87SW(float_state), sizeof(x87sw));
  54   return MXCSR(float_state) | x87sw;
  55 }
  56
  57 inline static unsigned int uap_fpu_status(void* uap) {
  58   return mach_fpu_status(UAP_FS(uap));
  59 }
  60
  61 inline static void mach_clear_fpu_status(x86_float_state64_t* float_state) {
  62   MXCSR(float_state) &= 0xffffffc0;
  63   memset(&X87SW(float_state), 0, sizeof(X87SW(float_state)));
  64 }
  65
  66 inline static void uap_clear_fpu_status(void* uap) {
  67   mach_clear_fpu_status(UAP_FS(uap));
  68 }
  69
  70 // Must match the stack-frame-size constant in
  71 // basis/bootstrap/assembler/x86.64.unix.factor
  72 static const unsigned JIT_FRAME_SIZE = 32;
  73
  74 }