2 * mach-support-arm.c: mach support for ARM
5 * Geoff Norton (gnorton@novell.com)
6 * Rodrigo Kumpera (kumpera@gmail.com)
8 * (C) 2010 Novell, Inc.
9 * (C) 2011 Xamarin, Inc.
18 #include "utils/mono-sigcontext.h"
19 #include "mach-support.h"
22 mono_mach_arch_get_ip (thread_state_t state)
24 arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
26 return (void *) arch_state->__pc;
30 mono_mach_arch_get_sp (thread_state_t state)
32 arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
34 return (void *) arch_state->__sp;
38 mono_mach_arch_get_mcontext_size ()
40 return sizeof (struct __darwin_mcontext);
44 mono_mach_arch_thread_state_to_mcontext (thread_state_t state, void *context)
46 arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
47 struct __darwin_mcontext *ctx = (struct __darwin_mcontext *) context;
49 ctx->__ss = *arch_state;
53 mono_mach_arch_mcontext_to_thread_state (void *context, thread_state_t state)
55 arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
56 struct __darwin_mcontext *ctx = (struct __darwin_mcontext *) context;
58 *arch_state = ctx->__ss;
62 mono_mach_arch_get_thread_state_size ()
64 return sizeof (arm_thread_state_t);
68 mono_mach_arch_get_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t *count)
70 arm_thread_state_t *arch_state = (arm_thread_state_t *) state;
73 *count = ARM_THREAD_STATE_COUNT;
75 ret = thread_get_state (thread, ARM_THREAD_STATE, (thread_state_t) arch_state, count);
81 mono_mach_arch_set_thread_state (thread_port_t thread, thread_state_t state, mach_msg_type_number_t count)
83 return thread_set_state (thread, ARM_THREAD_STATE_COUNT, state, count);
87 mono_mach_get_tls_address_from_thread (pthread_t thread, pthread_key_t key)
89 /* OSX stores TLS values in a hidden array inside the pthread_t structure
90 * They are keyed off a giant array offset 0x48 into the pointer. This value
91 * is baked into their pthread_getspecific implementation
93 intptr_t *p = (intptr_t *) thread;
94 intptr_t **tsd = (intptr_t **) ((char*)p + 0x48 + (key << 2));
100 mono_mach_arch_get_tls_value_from_thread (pthread_t thread, guint32 key)
102 return *(void**)mono_mach_get_tls_address_from_thread (thread, key);