1 /*
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3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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7  * published by the Free Software Foundation.
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9  * This code is distributed in the hope that it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12  * version 2 for more details (a copy is included in the LICENSE file that
13  * accompanied this code).
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24 
25 #ifndef OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP
26 #define OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP
27 
28  private:
29   void pd_initialize() {
30     _anchor.clear();
31   }
32 
pd_last_frame()33   frame pd_last_frame() {
34     assert(has_last_Java_frame(), "must have last_Java_sp() when suspended");
35     assert(_anchor.last_Java_pc() != NULL, "not walkable");
36     return frame(_anchor.last_Java_sp(), _anchor.last_Java_fp(), _anchor.last_Java_pc());
37   }
38 
39  public:
40   // Mutators are highly dangerous....
41   intptr_t* last_Java_fp()                       { return _anchor.last_Java_fp(); }
set_last_Java_fp(intptr_t * fp)42   void  set_last_Java_fp(intptr_t* fp)           { _anchor.set_last_Java_fp(fp);   }
43 
set_base_of_stack_pointer(intptr_t * base_sp)44   void set_base_of_stack_pointer(intptr_t* base_sp) {
45   }
46 
last_Java_fp_offset()47   static ByteSize last_Java_fp_offset()          {
48     return byte_offset_of(JavaThread, _anchor) + JavaFrameAnchor::last_Java_fp_offset();
49   }
50 
base_of_stack_pointer()51   intptr_t* base_of_stack_pointer() {
52     return NULL;
53   }
record_base_of_stack_pointer()54   void record_base_of_stack_pointer() {
55   }
56 
57   bool pd_get_top_frame_for_signal_handler(frame* fr_addr, void* ucontext,
58     bool isInJava);
59 
60   bool pd_get_top_frame_for_profiling(frame* fr_addr, void* ucontext,
61     bool isInJava);
62 
63 private:
64   bool pd_get_top_frame(frame* fr_addr, void* ucontext, bool isInJava);
65 public:
66 
67   // These routines are only used on cpu architectures that
68   // have separate register stacks (Itanium).
69   static bool register_stack_overflow() { return false; }
enable_register_stack_guard()70   static void enable_register_stack_guard() {}
disable_register_stack_guard()71   static void disable_register_stack_guard() {}
72 
73 #endif // OS_CPU_BSD_X86_VM_THREAD_BSD_X86_HPP
74