1 //===-- RegisterContextFreeBSD_i386.cpp ------------------------*- 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 #include "RegisterContextPOSIX_x86.h"
11 #include "RegisterContextFreeBSD_i386.h"
12 
13 using namespace lldb_private;
14 using namespace lldb;
15 
16 // http://svnweb.freebsd.org/base/head/sys/x86/include/reg.h
17 struct GPR
18 {
19     uint32_t fs;
20     uint32_t es;
21     uint32_t ds;
22     uint32_t edi;
23     uint32_t esi;
24     uint32_t ebp;
25     uint32_t isp;
26     uint32_t ebx;
27     uint32_t edx;
28     uint32_t ecx;
29     uint32_t eax;
30     uint32_t trapno;
31     uint32_t err;
32     uint32_t eip;
33     uint32_t cs;
34     uint32_t eflags;
35     uint32_t esp;
36     uint32_t ss;
37     uint32_t gs;
38 };
39 
40 struct dbreg {
41     uint32_t  dr[8];     /* debug registers */
42                          /* Index 0-3: debug address registers */
43                          /* Index 4-5: reserved */
44                          /* Index 6: debug status */
45                          /* Index 7: debug control */
46 };
47 
48 
49 #define DR_SIZE sizeof(uint32_t)
50 #define DR_OFFSET(reg_index) \
51     (LLVM_EXTENSION offsetof(dbreg, dr[reg_index]))
52 
53 //---------------------------------------------------------------------------
54 // Include RegisterInfos_i386 to declare our g_register_infos_i386 structure.
55 //---------------------------------------------------------------------------
56 #define DECLARE_REGISTER_INFOS_I386_STRUCT
57 #include "RegisterInfos_i386.h"
58 #undef DECLARE_REGISTER_INFOS_I386_STRUCT
59 
60 RegisterContextFreeBSD_i386::RegisterContextFreeBSD_i386(const ArchSpec &target_arch) :
61     RegisterInfoInterface(target_arch)
62 {
63 }
64 
65 RegisterContextFreeBSD_i386::~RegisterContextFreeBSD_i386()
66 {
67 }
68 
69 size_t
70 RegisterContextFreeBSD_i386::GetGPRSize()
71 {
72     return sizeof(GPR);
73 }
74 
75 const RegisterInfo *
76 RegisterContextFreeBSD_i386::GetRegisterInfo()
77 {
78     switch (m_target_arch.GetMachine())
79     {
80         case llvm::Triple::x86:
81             return g_register_infos_i386;
82         default:
83             assert(false && "Unhandled target architecture.");
84             return NULL;
85     }
86 }
87