mono/utils/mach-support-amd64.c

   1 /*
   2  * mach-support-x86.c: mach support for x86
   3  *
   4  * Authors:
   5  *   Geoff Norton (gnorton@novell.com)
   6  *
   7  * (C) 2010 Novell, Inc.
   8  */
   9
  10 #include <config.h>
  11
  12 #if defined(__MACH__)
  13 #include <stdint.h>
  14 #include <glib.h>
  15 #include <pthread.h>
  16 #include "utils/mono-sigcontext.h"
  17 #include "mach-support.h"
  18
  19 void *
  20 mono_mach_arch_get_ip (thread_state_t state)
  21 {
  22         x86_thread_state64_t *arch_state = (x86_thread_state64_t *) state;
  23
  24         return (void *) arch_state->__rip;
  25 }
  26
  27 void *
  28 mono_mach_arch_get_sp (thread_state_t state)
  29 {
  30         x86_thread_state64_t *arch_state = (x86_thread_state64_t *) state;
  31
  32         return (void *) arch_state->__rsp;
  33 }
  34
  35 int
  36 mono_mach_arch_get_mcontext_size ()
  37 {
  38         return sizeof (struct __darwin_mcontext64);
  39 }
  40
  41 void
  42 mono_mach_arch_thread_state_to_mcontext (thread_state_t state, mcontext_t context)
  43 {
  44         x86_thread_state64_t *arch_state = (x86_thread_state64_t *) state;
  45         struct __darwin_mcontext64 *ctx = (struct __darwin_mcontext64 *) context;
  46
  47         ctx->__ss = *arch_state;
  48 }
  49
  50 void
  51 mono_mach_arch_mcontext_to_thread_state (mcontext_t context, thread_state_t state)
  52 {
  53         x86_thread_state64_t *arch_state = (x86_thread_state64_t *) state;
  54         struct __darwin_mcontext64 *ctx = (struct __darwin_mcontext64 *) context;
  55
  56         *arch_state = ctx->__ss;
  57 }
  58
  59 int
  60 mono_mach_arch_get_thread_state_size ()
  61 {
  62         return sizeof (x86_thread_state64_t);
  63 }
  64
  65 kern_return_t
  66 mono_mach_arch_get_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t *count)
  67 {
  68         x86_thread_state64_t *arch_state = (x86_thread_state64_t *) state;
  69         kern_return_t ret;
  70
  71         *count = x86_THREAD_STATE64_COUNT;
  72
  73         ret = thread_get_state (thread, x86_THREAD_STATE64, (thread_state_t) arch_state, count);
  74
  75         return ret;
  76 }
  77
  78 kern_return_t
  79 mono_mach_arch_set_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t count)
  80 {
  81         return thread_set_state (thread, x86_THREAD_STATE64, state, count);
  82 }
  83
  84 void *
  85 mono_mach_get_tls_address_from_thread (pthread_t thread, pthread_key_t key)
  86 {
  87         /* OSX stores TLS values in a hidden array inside the pthread_t structure
  88          * They are keyed off a giant array offset 0x60 into the pointer.  This value
  89          * is baked into their pthread_getspecific implementation
  90          */
  91         intptr_t *p = (intptr_t *)thread;
  92         intptr_t **tsd = (intptr_t **) ((char*)p + 0x60);
  93
  94         return (void *) &tsd [key];
  95 }
  96
  97 void *
  98 mono_mach_arch_get_tls_value_from_thread (pthread_t thread, guint32 key)
  99 {
 100         return *(void**)mono_mach_get_tls_address_from_thread (thread, key);
 101 }
 102
 103 #endif