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c14ca13e | 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 | #****************************************************************************** | |
b6454bcb | 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 # ? | |
26 | _StubSize: .long 0x0 | |
27 | # StubSize: .long InterruptEntryStubEnd - InterruptEntryStub | |
28 | ||
29 | .global _FxStorSupport | |
30 | _FxStorSupport: | |
31 | push %ebx | |
32 | mov $0x1,%eax | |
33 | cpuid | |
34 | mov %edx,%eax | |
35 | and $0x1000000,%eax | |
36 | shr $0x18,%eax | |
37 | pop %ebx | |
38 | ret | |
39 | ||
40 | .global _GetIdtr | |
41 | _GetIdtr: | |
42 | push %ebp | |
43 | mov %esp,%ebp | |
44 | add $0xfffffff8,%esp | |
45 | sidtl 0xfffffffa(%ebp) | |
46 | mov 0xfffffffc(%ebp),%eax | |
47 | leave | |
48 | ret | |
49 | ||
50 | .global _WriteInterruptFlag | |
51 | _WriteInterruptFlag: | |
52 | push %ebp | |
53 | mov %esp,%ebp | |
54 | pushf | |
55 | pop %eax | |
56 | and $0x200,%eax | |
57 | shr $0x9,%eax | |
58 | mov 0x8(%ebp),%ecx | |
59 | or %ecx,%ecx | |
60 | jne _WriteInterruptFlag+0x17 | |
61 | cli | |
62 | jmp _WriteInterruptFlag+0x18 | |
63 | sti | |
64 | leave | |
65 | ret | |
66 | ||
67 | .global _Vect2Desc | |
68 | _Vect2Desc: | |
69 | push %ebp | |
70 | mov %esp,%ebp | |
71 | mov 0xc(%ebp),%eax | |
72 | mov 0x8(%ebp),%ecx | |
73 | mov %ax,(%ecx) | |
74 | movw $0x20,0x2(%ecx) | |
75 | movw $0x8e00,0x4(%ecx) | |
76 | shr $0x10,%eax | |
77 | mov %ax,0x6(%ecx) | |
78 | leave | |
79 | ret | |
80 | ||
81 | .global _InterruptEntryStub | |
82 | _InterruptEntryStub: | |
83 | mov %esp,0x0 | |
84 | mov $0x0,%esp | |
85 | push $0x0 | |
86 | jmp _CommonIdtEntry | |
87 | ||
88 | .global _CommonIdtEntry | |
89 | _CommonIdtEntry: | |
90 | pusha | |
91 | pushf | |
92 | pop %eax | |
93 | mov %eax,0x0 | |
94 | cmpl $0x8,0x0 | |
95 | jne _CommonIdtEntry+0x20 | |
96 | movl $0x1,0x0 | |
97 | jmp _CommonIdtEntry+0xa8 | |
98 | cmpl $0xa,0x0 | |
99 | jne _CommonIdtEntry+0x35 | |
100 | movl $0x1,0x0 | |
101 | jmp _CommonIdtEntry+0xa8 | |
102 | cmpl $0xb,0x0 | |
103 | jne _CommonIdtEntry+0x4a | |
104 | movl $0x1,0x0 | |
105 | jmp _CommonIdtEntry+0xa8 | |
106 | cmpl $0xc,0x0 | |
107 | jne _CommonIdtEntry+0x5f | |
108 | movl $0x1,0x0 | |
109 | jmp _CommonIdtEntry+0xa8 | |
110 | cmpl $0xd,0x0 | |
111 | jne _CommonIdtEntry+0x74 | |
112 | movl $0x1,0x0 | |
113 | jmp _CommonIdtEntry+0xa8 | |
114 | cmpl $0xe,0x0 | |
115 | jne _CommonIdtEntry+0x89 | |
116 | movl $0x1,0x0 | |
117 | jmp _CommonIdtEntry+0xa8 | |
118 | cmpl $0x11,0x0 | |
119 | jne _CommonIdtEntry+0x9e | |
120 | movl $0x1,0x0 | |
121 | jmp _CommonIdtEntry+0xa8 | |
122 | movl $0x0,0x0 | |
123 | cmpl $0x1,0x0 | |
124 | jne _CommonIdtEntry+0xc8 | |
125 | mov 0x0,%eax | |
126 | mov (%eax),%ebx | |
127 | mov %ebx,0x0 | |
128 | add $0x4,%eax | |
129 | mov %eax,0x0 | |
130 | jmp _CommonIdtEntry+0xd2 | |
131 | movl $0x0,0x0 | |
132 | mov 0xc(%esp),%eax | |
133 | mov %eax,0x0 | |
134 | mov 0x0,%eax | |
135 | add $0xc,%eax | |
136 | mov %eax,0xc(%esp) | |
137 | mov %ss,%eax | |
138 | push %eax | |
139 | mov 0x0,%eax | |
140 | movzwl 0x4(%eax),%eax | |
141 | push %eax | |
142 | mov %ds,%eax | |
143 | push %eax | |
144 | mov %es,%eax | |
145 | push %eax | |
146 | mov %fs,%eax | |
147 | push %eax | |
148 | mov %gs,%eax | |
149 | push %eax | |
150 | mov 0x0,%eax | |
151 | pushl (%eax) | |
152 | push $0x0 | |
153 | push $0x0 | |
154 | sidtl (%esp) | |
155 | push $0x0 | |
156 | push $0x0 | |
157 | sgdtl (%esp) | |
158 | xor %eax,%eax | |
159 | str %eax | |
160 | push %eax | |
161 | sldt %eax | |
162 | push %eax | |
163 | mov 0x0,%eax | |
164 | pushl 0x8(%eax) | |
165 | mov %cr4,%eax | |
166 | or $0x208,%eax | |
167 | mov %eax,%cr4 | |
168 | push %eax | |
169 | mov %cr3,%eax | |
170 | push %eax | |
171 | mov %cr2,%eax | |
172 | push %eax | |
173 | push $0x0 | |
174 | mov %cr0,%eax | |
175 | push %eax | |
176 | mov %db7,%eax | |
177 | push %eax | |
178 | xor %eax,%eax | |
179 | mov %eax,%db7 | |
180 | mov %db6,%eax | |
181 | push %eax | |
182 | xor %eax,%eax | |
183 | mov %eax,%db6 | |
184 | mov %db3,%eax | |
185 | push %eax | |
186 | mov %db2,%eax | |
187 | push %eax | |
188 | mov %db1,%eax | |
189 | push %eax | |
190 | mov %db0,%eax | |
191 | push %eax | |
192 | sub $0x200,%esp | |
193 | mov %esp,%edi | |
194 | fxsave (%edi) | |
195 | mov 0x0,%eax | |
196 | push %eax | |
197 | mov %esp,%eax | |
198 | push %eax | |
199 | mov 0x0,%eax | |
200 | push %eax | |
201 | call _CommonIdtEntry+0x184 | |
202 | add $0x8,%esp | |
203 | add $0x4,%esp | |
204 | mov %esp,%esi | |
205 | fxrstor (%esi) | |
206 | add $0x200,%esp | |
207 | pop %eax | |
208 | mov %eax,%db0 | |
209 | pop %eax | |
210 | mov %eax,%db1 | |
211 | pop %eax | |
212 | mov %eax,%db2 | |
213 | pop %eax | |
214 | mov %eax,%db3 | |
215 | add $0x4,%esp | |
216 | pop %eax | |
217 | mov %eax,%db7 | |
218 | pop %eax | |
219 | mov %eax,%cr0 | |
220 | add $0x4,%esp | |
221 | pop %eax | |
222 | mov %eax,%cr2 | |
223 | pop %eax | |
224 | mov %eax,%cr3 | |
225 | pop %eax | |
226 | mov %eax,%cr4 | |
227 | mov 0x0,%eax | |
228 | popl 0x8(%eax) | |
229 | add $0x18,%esp | |
230 | popl (%eax) | |
231 | pop %gs | |
232 | pop %fs | |
233 | pop %es | |
234 | pop %ds | |
235 | popl 0x4(%eax) | |
236 | pop %ss | |
237 | mov 0xc(%esp),%ebx | |
238 | mov 0x0,%eax | |
239 | add $0xc,%eax | |
240 | cmp %eax,%ebx | |
241 | je _CommonIdtEntry+0x202 | |
242 | mov 0x0,%eax | |
243 | mov (%eax),%ecx | |
244 | mov %ecx,(%ebx) | |
245 | mov 0x4(%eax),%ecx | |
246 | mov %ecx,0x4(%ebx) | |
247 | mov 0x8(%eax),%ecx | |
248 | mov %ecx,0x8(%ebx) | |
249 | mov %ebx,%eax | |
250 | mov %eax,0x0 | |
251 | mov 0x0,%eax | |
252 | mov %eax,0xc(%esp) | |
253 | cmpl $0x68,0x0 | |
254 | jne PhonyIretd+0xd | |
255 | mov 0x0,%eax | |
256 | mov 0x8(%eax),%ebx | |
257 | and $0xfffffcff,%ebx | |
258 | push %ebx | |
259 | push %cs | |
260 | push $0x0 | |
261 | iret | |
262 | ||
263 | PhonyIretd: | |
264 | popa | |
265 | mov 0x0,%esp | |
266 | jmp *0x0 | |
267 | popa | |
268 | mov 0x0,%esp | |
269 | iret |