ABIMacOSX_i386.h revision 263363 
1//===-- ABIMacOSX_i386.h ----------------------------------------*- C++ -*-===//
2//
3//                     The LLVM Compiler Infrastructure
4//
5// This file is distributed under the University of Illinois Open Source
6// License. See LICENSE.TXT for details.
7//
8//===----------------------------------------------------------------------===//
9
10#ifndef liblldb_ABIMacOSX_i386_h_
11#define liblldb_ABIMacOSX_i386_h_
12
13// C Includes
14// C++ Includes
15// Other libraries and framework includes
16// Project includes
17#include "lldb/lldb-private.h"
18#include "lldb/Target/ABI.h"
19#include "lldb/Core/Value.h"
20
21class ABIMacOSX_i386 :
22    public lldb_private::ABI
23{
24public:
25
26    ~ABIMacOSX_i386() { }
27
28    virtual size_t
29    GetRedZoneSize () const;
30
31    virtual bool
32    PrepareTrivialCall (lldb_private::Thread &thread,
33                        lldb::addr_t sp,
34                        lldb::addr_t func_addr,
35                        lldb::addr_t return_addr,
36                        lldb::addr_t *arg1_ptr = NULL,
37                        lldb::addr_t *arg2_ptr = NULL,
38                        lldb::addr_t *arg3_ptr = NULL,
39                        lldb::addr_t *arg4_ptr = NULL,
40                        lldb::addr_t *arg5_ptr = NULL,
41                        lldb::addr_t *arg6_ptr = NULL) const;
42
43    virtual bool
44    PrepareNormalCall (lldb_private::Thread &thread,
45                       lldb::addr_t sp,
46                       lldb::addr_t func_addr,
47                       lldb::addr_t return_addr,
48                       lldb_private::ValueList &args) const;
49
50    virtual bool
51    GetArgumentValues (lldb_private::Thread &thread,
52                       lldb_private::ValueList &values) const;
53
54    virtual lldb_private::Error
55    SetReturnValueObject(lldb::StackFrameSP &frame_sp, lldb::ValueObjectSP &new_value);
56
57protected:
58    virtual lldb::ValueObjectSP
59    GetReturnValueObjectImpl (lldb_private::Thread &thread,
60                    lldb_private::ClangASTType &ast_type) const;
61
62public:
63
64    virtual bool
65    CreateFunctionEntryUnwindPlan (lldb_private::UnwindPlan &unwind_plan);
66
67    virtual bool
68    CreateDefaultUnwindPlan (lldb_private::UnwindPlan &unwind_plan);
69
70    virtual bool
71    RegisterIsVolatile (const lldb_private::RegisterInfo *reg_info);
72
73    virtual bool
74    StackUsesFrames ()
75    {
76        return true;
77    }
78
79    virtual bool
80    CallFrameAddressIsValid (lldb::addr_t cfa)
81    {
82        // Darwin call frame addresses must be 16-byte aligned, but other OS's
83        // only need 4-byte alignment.  Otherwise the ABI matches, so we have
84        // this one minor override here.
85        if (target_is_darwin)
86        {
87            // Make sure the stack call frame addresses are are 16 byte aligned
88            if (cfa & (16ull - 1ull))
89                return false;   // Not 16 byte aligned
90        }
91        else
92        {
93            // Make sure the stack call frame addresses are are 4 byte aligned
94            if (cfa & (4ull - 1ull))
95                return false;   // Not 4 byte aligned
96        }
97        if (cfa == 0)
98            return false;   // Zero is not a valid stack address
99        return true;
100    }
101
102    virtual bool
103    CodeAddressIsValid (lldb::addr_t pc)
104    {
105        // Just make sure the address is a valid 32 bit address.
106        return pc <= UINT32_MAX;
107    }
108
109    virtual bool
110    FunctionCallsChangeCFA ()
111    {
112        return true;
113    }
114
115    virtual const lldb_private::RegisterInfo *
116    GetRegisterInfoArray (uint32_t &count);
117
118    //------------------------------------------------------------------
119    // Static Functions
120    //------------------------------------------------------------------
121    static void
122    Initialize();
123
124    static void
125    Terminate();
126
127    static lldb::ABISP
128    CreateInstance (const lldb_private::ArchSpec &arch);
129
130    //------------------------------------------------------------------
131    // PluginInterface protocol
132    //------------------------------------------------------------------
133    static lldb_private::ConstString
134    GetPluginNameStatic ();
135
136    virtual lldb_private::ConstString
137    GetPluginName();
138
139    virtual uint32_t
140    GetPluginVersion();
141
142protected:
143    bool
144    RegisterIsCalleeSaved (const lldb_private::RegisterInfo *reg_info);
145
146private:
147    ABIMacOSX_i386(bool is_darwin) : lldb_private::ABI(),
148                                     target_is_darwin(is_darwin)
149                                   { } // Call CreateInstance instead.
150
151    bool target_is_darwin;
152};
153
154
155#endif  // liblldb_ABI_h_
156