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1 | #****************************************************************************** |
2 | #* |
3 | #* Copyright (c) 2006, Intel Corporation |
4 | #* All rights reserved. This program and the accompanying materials |
5 | #* are licensed and made available under the terms and conditions of the BSD License |
6 | #* which accompanies this distribution. The full text of the license may be found at |
7 | #* http://opensource.org/licenses/bsd-license.php |
8 | #* |
9 | #* THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, |
10 | #* WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. |
11 | #* |
12 | #****************************************************************************** |
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13 | |
14 | .global _OrigVector |
15 | .global _InterruptEntryStub |
16 | .global _StubSize |
17 | .global _CommonIdtEntry |
18 | .global _FxStorSupport |
19 | |
20 | _AppEsp: .long 0x11111111 # ? |
21 | _DebugEsp: .long 0x22222222 # ? |
22 | _ExtraPush: .long 0x33333333 # ? |
23 | _ExceptData: .long 0x44444444 # ? |
24 | _Eflags: .long 0x55555555 # ? |
25 | _OrigVector: .long 0x66666666 # ? |
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26 | _StubSize: .long _InterruptEntryStubEnd - _InterruptEntryStub |
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27 | |
28 | .global _FxStorSupport |
29 | _FxStorSupport: |
30 | push %ebx |
31 | mov $0x1,%eax |
32 | cpuid |
33 | mov %edx,%eax |
34 | and $0x1000000,%eax |
35 | shr $0x18,%eax |
36 | pop %ebx |
37 | ret |
38 | |
39 | .global _GetIdtr |
40 | _GetIdtr: |
41 | push %ebp |
42 | mov %esp,%ebp |
43 | add $0xfffffff8,%esp |
44 | sidtl 0xfffffffa(%ebp) |
45 | mov 0xfffffffc(%ebp),%eax |
46 | leave |
47 | ret |
48 | |
49 | .global _WriteInterruptFlag |
50 | _WriteInterruptFlag: |
51 | push %ebp |
52 | mov %esp,%ebp |
53 | pushf |
54 | pop %eax |
55 | and $0x200,%eax |
56 | shr $0x9,%eax |
57 | mov 0x8(%ebp),%ecx |
58 | or %ecx,%ecx |
59 | jne _WriteInterruptFlag+0x17 |
60 | cli |
61 | jmp _WriteInterruptFlag+0x18 |
62 | sti |
63 | leave |
64 | ret |
65 | |
66 | .global _Vect2Desc |
67 | _Vect2Desc: |
68 | push %ebp |
69 | mov %esp,%ebp |
70 | mov 0xc(%ebp),%eax |
71 | mov 0x8(%ebp),%ecx |
72 | mov %ax,(%ecx) |
73 | movw $0x20,0x2(%ecx) |
74 | movw $0x8e00,0x4(%ecx) |
75 | shr $0x10,%eax |
76 | mov %ax,0x6(%ecx) |
77 | leave |
78 | ret |
79 | |
80 | .global _InterruptEntryStub |
81 | _InterruptEntryStub: |
82 | mov %esp,0x0 |
83 | mov $0x0,%esp |
84 | push $0x0 |
85 | jmp _CommonIdtEntry |
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86 | .global _InterruptEntryStubEnd |
87 | _InterruptEntryStubEnd: |
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88 | |
89 | .global _CommonIdtEntry |
90 | _CommonIdtEntry: |
91 | pusha |
92 | pushf |
93 | pop %eax |
94 | mov %eax,0x0 |
95 | cmpl $0x8,0x0 |
96 | jne _CommonIdtEntry+0x20 |
97 | movl $0x1,0x0 |
98 | jmp _CommonIdtEntry+0xa8 |
99 | cmpl $0xa,0x0 |
100 | jne _CommonIdtEntry+0x35 |
101 | movl $0x1,0x0 |
102 | jmp _CommonIdtEntry+0xa8 |
103 | cmpl $0xb,0x0 |
104 | jne _CommonIdtEntry+0x4a |
105 | movl $0x1,0x0 |
106 | jmp _CommonIdtEntry+0xa8 |
107 | cmpl $0xc,0x0 |
108 | jne _CommonIdtEntry+0x5f |
109 | movl $0x1,0x0 |
110 | jmp _CommonIdtEntry+0xa8 |
111 | cmpl $0xd,0x0 |
112 | jne _CommonIdtEntry+0x74 |
113 | movl $0x1,0x0 |
114 | jmp _CommonIdtEntry+0xa8 |
115 | cmpl $0xe,0x0 |
116 | jne _CommonIdtEntry+0x89 |
117 | movl $0x1,0x0 |
118 | jmp _CommonIdtEntry+0xa8 |
119 | cmpl $0x11,0x0 |
120 | jne _CommonIdtEntry+0x9e |
121 | movl $0x1,0x0 |
122 | jmp _CommonIdtEntry+0xa8 |
123 | movl $0x0,0x0 |
124 | cmpl $0x1,0x0 |
125 | jne _CommonIdtEntry+0xc8 |
126 | mov 0x0,%eax |
127 | mov (%eax),%ebx |
128 | mov %ebx,0x0 |
129 | add $0x4,%eax |
130 | mov %eax,0x0 |
131 | jmp _CommonIdtEntry+0xd2 |
132 | movl $0x0,0x0 |
133 | mov 0xc(%esp),%eax |
134 | mov %eax,0x0 |
135 | mov 0x0,%eax |
136 | add $0xc,%eax |
137 | mov %eax,0xc(%esp) |
138 | mov %ss,%eax |
139 | push %eax |
140 | mov 0x0,%eax |
141 | movzwl 0x4(%eax),%eax |
142 | push %eax |
143 | mov %ds,%eax |
144 | push %eax |
145 | mov %es,%eax |
146 | push %eax |
147 | mov %fs,%eax |
148 | push %eax |
149 | mov %gs,%eax |
150 | push %eax |
151 | mov 0x0,%eax |
152 | pushl (%eax) |
153 | push $0x0 |
154 | push $0x0 |
155 | sidtl (%esp) |
156 | push $0x0 |
157 | push $0x0 |
158 | sgdtl (%esp) |
159 | xor %eax,%eax |
160 | str %eax |
161 | push %eax |
162 | sldt %eax |
163 | push %eax |
164 | mov 0x0,%eax |
165 | pushl 0x8(%eax) |
166 | mov %cr4,%eax |
167 | or $0x208,%eax |
168 | mov %eax,%cr4 |
169 | push %eax |
170 | mov %cr3,%eax |
171 | push %eax |
172 | mov %cr2,%eax |
173 | push %eax |
174 | push $0x0 |
175 | mov %cr0,%eax |
176 | push %eax |
177 | mov %db7,%eax |
178 | push %eax |
179 | xor %eax,%eax |
180 | mov %eax,%db7 |
181 | mov %db6,%eax |
182 | push %eax |
183 | xor %eax,%eax |
184 | mov %eax,%db6 |
185 | mov %db3,%eax |
186 | push %eax |
187 | mov %db2,%eax |
188 | push %eax |
189 | mov %db1,%eax |
190 | push %eax |
191 | mov %db0,%eax |
192 | push %eax |
193 | sub $0x200,%esp |
194 | mov %esp,%edi |
195 | fxsave (%edi) |
196 | mov 0x0,%eax |
197 | push %eax |
198 | mov %esp,%eax |
199 | push %eax |
200 | mov 0x0,%eax |
201 | push %eax |
202 | call _CommonIdtEntry+0x184 |
203 | add $0x8,%esp |
204 | add $0x4,%esp |
205 | mov %esp,%esi |
206 | fxrstor (%esi) |
207 | add $0x200,%esp |
208 | pop %eax |
209 | mov %eax,%db0 |
210 | pop %eax |
211 | mov %eax,%db1 |
212 | pop %eax |
213 | mov %eax,%db2 |
214 | pop %eax |
215 | mov %eax,%db3 |
216 | add $0x4,%esp |
217 | pop %eax |
218 | mov %eax,%db7 |
219 | pop %eax |
220 | mov %eax,%cr0 |
221 | add $0x4,%esp |
222 | pop %eax |
223 | mov %eax,%cr2 |
224 | pop %eax |
225 | mov %eax,%cr3 |
226 | pop %eax |
227 | mov %eax,%cr4 |
228 | mov 0x0,%eax |
229 | popl 0x8(%eax) |
230 | add $0x18,%esp |
231 | popl (%eax) |
232 | pop %gs |
233 | pop %fs |
234 | pop %es |
235 | pop %ds |
236 | popl 0x4(%eax) |
237 | pop %ss |
238 | mov 0xc(%esp),%ebx |
239 | mov 0x0,%eax |
240 | add $0xc,%eax |
241 | cmp %eax,%ebx |
242 | je _CommonIdtEntry+0x202 |
243 | mov 0x0,%eax |
244 | mov (%eax),%ecx |
245 | mov %ecx,(%ebx) |
246 | mov 0x4(%eax),%ecx |
247 | mov %ecx,0x4(%ebx) |
248 | mov 0x8(%eax),%ecx |
249 | mov %ecx,0x8(%ebx) |
250 | mov %ebx,%eax |
251 | mov %eax,0x0 |
252 | mov 0x0,%eax |
253 | mov %eax,0xc(%esp) |
254 | cmpl $0x68,0x0 |
255 | jne PhonyIretd+0xd |
256 | mov 0x0,%eax |
257 | mov 0x8(%eax),%ebx |
258 | and $0xfffffcff,%ebx |
259 | push %ebx |
260 | push %cs |
261 | push $0x0 |
262 | iret |
263 | |
264 | PhonyIretd: |
265 | popa |
266 | mov 0x0,%esp |
267 | jmp *0x0 |
268 | popa |
269 | mov 0x0,%esp |
270 | iret |