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0c530ab8 A |
1 | /* |
2 | * Copyright (c) 2006 Apple Computer, Inc. All rights reserved. | |
3 | * | |
2d21ac55 | 4 | * @APPLE_OSREFERENCE_LICENSE_HEADER_START@ |
0c530ab8 | 5 | * |
2d21ac55 A |
6 | * This file contains Original Code and/or Modifications of Original Code |
7 | * as defined in and that are subject to the Apple Public Source License | |
8 | * Version 2.0 (the 'License'). You may not use this file except in | |
9 | * compliance with the License. The rights granted to you under the License | |
10 | * may not be used to create, or enable the creation or redistribution of, | |
11 | * unlawful or unlicensed copies of an Apple operating system, or to | |
12 | * circumvent, violate, or enable the circumvention or violation of, any | |
13 | * terms of an Apple operating system software license agreement. | |
0c530ab8 | 14 | * |
2d21ac55 A |
15 | * Please obtain a copy of the License at |
16 | * http://www.opensource.apple.com/apsl/ and read it before using this file. | |
17 | * | |
18 | * The Original Code and all software distributed under the License are | |
19 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER | |
0c530ab8 A |
20 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
21 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, | |
2d21ac55 A |
22 | * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT. |
23 | * Please see the License for the specific language governing rights and | |
24 | * limitations under the License. | |
0c530ab8 | 25 | * |
2d21ac55 | 26 | * @APPLE_OSREFERENCE_LICENSE_HEADER_END@ |
0c530ab8 A |
27 | */ |
28 | ||
29 | #include <string.h> | |
30 | ||
31 | #include <mach/machine/vm_types.h> | |
32 | ||
33 | #include <mach/boolean.h> | |
34 | #include <kern/thread.h> | |
35 | #include <kern/zalloc.h> | |
36 | ||
37 | #include <kern/lock.h> | |
38 | #include <kern/kalloc.h> | |
39 | #include <kern/spl.h> | |
40 | ||
41 | #include <vm/pmap.h> | |
42 | #include <vm/vm_map.h> | |
43 | #include <vm/vm_kern.h> | |
44 | #include <mach/vm_param.h> | |
45 | #include <mach/vm_prot.h> | |
46 | #include <vm/vm_object.h> | |
47 | #include <vm/vm_page.h> | |
48 | ||
49 | #include <mach/machine/vm_param.h> | |
50 | #include <machine/thread.h> | |
51 | ||
52 | #include <kern/misc_protos.h> /* prototyping */ | |
53 | #include <i386/misc_protos.h> | |
54 | ||
55 | #include <i386/cpuid.h> | |
56 | #include <i386/cpu_data.h> | |
57 | #include <i386/mp.h> | |
58 | #include <i386/cpu_number.h> | |
59 | #include <i386/machine_cpu.h> | |
0c530ab8 A |
60 | #include <i386/seg.h> |
61 | ||
62 | #include <vm/vm_protos.h> | |
63 | ||
64 | #include <sys/kdebug.h> | |
65 | ||
66 | #include <i386/postcode.h> | |
67 | ||
b0d623f7 | 68 | #ifdef __i386__ |
0c530ab8 A |
69 | void |
70 | cpu_IA32e_enable(cpu_data_t *cdp) | |
71 | { | |
0c530ab8 A |
72 | assert(!ml_get_interrupts_enabled()); |
73 | ||
2d21ac55 A |
74 | if (!cdp->cpu_is64bit || |
75 | (rdmsr64(MSR_IA32_EFER) & MSR_IA32_EFER_LMA) != 0) | |
76 | return; | |
0c530ab8 | 77 | |
2d21ac55 | 78 | postcode(CPU_IA32_ENABLE_ENTRY); |
0c530ab8 | 79 | |
2d21ac55 A |
80 | /* |
81 | * The following steps are performed by inlines so that | |
82 | * we can be assured we don't use the stack or any other | |
83 | * non-identity mapped data while paging is turned off... | |
84 | */ | |
85 | /* Turn paging off */ | |
86 | asm volatile( | |
87 | "mov %%cr0, %%eax \n\t" | |
88 | "andl %0, %%eax \n\t" | |
89 | "mov %%eax, %%cr0 \n\t" | |
90 | : | |
91 | : "i" (~CR0_PG) | |
92 | : "eax" ); | |
93 | ||
94 | /* Pop new top level phys pg addr into CR3 */ | |
95 | asm volatile( | |
96 | "mov %%eax, %%cr3 \n\t" | |
97 | : | |
98 | : "a" ((uint32_t) kernel64_cr3)); | |
99 | ||
100 | /* Turn on the 64-bit mode bit */ | |
101 | asm volatile( | |
102 | "rdmsr \n\t" | |
103 | "orl %1, %%eax \n\t" | |
104 | "wrmsr \n\t" | |
105 | : | |
106 | : "c" (MSR_IA32_EFER), "i" (MSR_IA32_EFER_LME) | |
107 | : "eax", "edx"); | |
108 | ||
109 | /* Turn paging on again */ | |
110 | asm volatile( | |
111 | "mov %%cr0, %%eax \n\t" | |
112 | "orl %0, %%eax \n\t" | |
113 | "mov %%eax, %%cr0 \n\t" | |
114 | : | |
115 | : "i" (CR0_PG) | |
116 | : "eax" ); | |
117 | ||
4a3eedf9 | 118 | #if ONLY_SAFE_FOR_LINDA_SERIAL |
0c530ab8 | 119 | kprintf("cpu_IA32e_enable(%p)\n", cdp); |
4a3eedf9 | 120 | #endif |
0c530ab8 A |
121 | |
122 | if ((rdmsr64(MSR_IA32_EFER) & MSR_IA32_EFER_LMA) == 0) | |
123 | panic("cpu_IA32e_enable() MSR_IA32_EFER_LMA not asserted"); | |
124 | ||
125 | cdp->cpu_kernel_cr3 = kernel64_cr3; | |
126 | ||
127 | postcode(CPU_IA32_ENABLE_EXIT); | |
128 | } | |
129 | ||
130 | void | |
131 | cpu_IA32e_disable(cpu_data_t *cdp) | |
132 | { | |
0c530ab8 A |
133 | assert(!ml_get_interrupts_enabled()); |
134 | ||
135 | postcode(CPU_IA32_DISABLE_ENTRY); | |
136 | ||
2d21ac55 A |
137 | if (!cdp->cpu_is64bit || |
138 | (rdmsr64(MSR_IA32_EFER) & MSR_IA32_EFER_LMA) == 0) | |
139 | return; | |
140 | ||
141 | /* | |
142 | * The following steps are performed by inlines so that | |
143 | * we can be assured we don't use the stack or any other | |
144 | * non-identity mapped data while paging is turned off... | |
145 | */ | |
146 | /* Turn paging off */ | |
147 | asm volatile( | |
148 | "mov %%cr0, %%eax \n\t" | |
149 | "andl %0, %%eax \n\t" | |
150 | "mov %%eax, %%cr0 \n\t" | |
151 | : | |
152 | : "i" (~CR0_PG) | |
153 | : "eax" ); | |
154 | ||
155 | /* Pop legacy top level phys pg addr into CR3 */ | |
156 | asm volatile( | |
157 | "mov %%eax, %%cr3 \n\t" | |
158 | : | |
159 | : "a" ((uint32_t) lo_kernel_cr3)); | |
160 | ||
161 | /* Turn off the 64-bit mode bit */ | |
162 | asm volatile( | |
163 | "rdmsr \n\t" | |
164 | "andl %1, %%eax \n\t" | |
165 | "wrmsr \n\t" | |
166 | : | |
167 | : "c" (MSR_IA32_EFER), "i" (~MSR_IA32_EFER_LME) | |
168 | : "eax", "edx"); | |
169 | ||
170 | /* Turn paging on again */ | |
171 | asm volatile( | |
172 | "mov %%cr0, %%eax \n\t" | |
173 | "orl %0, %%eax \n\t" | |
174 | "mov %%eax, %%cr0 \n\t" | |
175 | : | |
176 | : "i" (CR0_PG) | |
177 | : "eax" ); | |
178 | ||
0c530ab8 A |
179 | kprintf("cpu_IA32e_disable(%p)\n", cdp); |
180 | ||
181 | if ((rdmsr64(MSR_IA32_EFER) & MSR_IA32_EFER_LMA) != 0) | |
182 | panic("cpu_IA32e_disable() MSR_IA32_EFER_LMA not cleared"); | |
183 | ||
184 | cdp->cpu_kernel_cr3 = 0ULL; | |
185 | ||
186 | postcode(CPU_IA32_DISABLE_EXIT); | |
187 | } | |
b0d623f7 | 188 | #endif |
0c530ab8 A |
189 | |
190 | #if DEBUG | |
316670eb | 191 | extern void dump_regs64(void); |
0c530ab8 A |
192 | extern void dump_gdt(void *); |
193 | extern void dump_ldt(void *); | |
194 | extern void dump_idt(void *); | |
195 | extern void dump_tss(void *); | |
196 | extern void dump_frame32(x86_saved_state_compat32_t *scp); | |
197 | extern void dump_frame64(x86_saved_state64_t *sp); | |
198 | extern void dump_frame(x86_saved_state_t *sp); | |
199 | ||
200 | void | |
201 | dump_frame(x86_saved_state_t *sp) | |
202 | { | |
203 | if (is_saved_state32(sp)) | |
204 | dump_frame32((x86_saved_state_compat32_t *) sp); | |
205 | else if (is_saved_state64(sp)) | |
206 | dump_frame64(&sp->ss_64); | |
207 | else | |
208 | kprintf("dump_frame(%p) unknown type %d\n", sp, sp->flavor); | |
209 | } | |
210 | ||
211 | void | |
212 | dump_frame32(x86_saved_state_compat32_t *scp) | |
213 | { | |
214 | unsigned int i; | |
215 | uint32_t *ip = (uint32_t *) scp; | |
216 | ||
2d21ac55 | 217 | kprintf("dump_frame32(%p):\n", scp); |
0c530ab8 A |
218 | |
219 | for (i = 0; | |
220 | i < sizeof(x86_saved_state_compat32_t)/sizeof(uint32_t); | |
221 | i++, ip++) | |
2d21ac55 | 222 | kprintf("%p: 0x%08x\n", ip, *ip); |
0c530ab8 A |
223 | |
224 | kprintf("scp->isf64.err: 0x%016llx\n", scp->isf64.err); | |
225 | kprintf("scp->isf64.rip: 0x%016llx\n", scp->isf64.rip); | |
226 | kprintf("scp->isf64.cs: 0x%016llx\n", scp->isf64.cs); | |
227 | kprintf("scp->isf64.rflags: 0x%016llx\n", scp->isf64.rflags); | |
228 | kprintf("scp->isf64.rsp: 0x%016llx\n", scp->isf64.rsp); | |
229 | kprintf("scp->isf64.ss: 0x%016llx\n", scp->isf64.ss); | |
230 | ||
231 | kprintf("scp->iss32.tag: 0x%08x\n", scp->iss32.tag); | |
232 | kprintf("scp->iss32.state.gs: 0x%08x\n", scp->iss32.state.gs); | |
233 | kprintf("scp->iss32.state.fs: 0x%08x\n", scp->iss32.state.fs); | |
234 | kprintf("scp->iss32.state.es: 0x%08x\n", scp->iss32.state.es); | |
235 | kprintf("scp->iss32.state.ds: 0x%08x\n", scp->iss32.state.ds); | |
236 | kprintf("scp->iss32.state.edi: 0x%08x\n", scp->iss32.state.edi); | |
237 | kprintf("scp->iss32.state.esi: 0x%08x\n", scp->iss32.state.esi); | |
238 | kprintf("scp->iss32.state.ebp: 0x%08x\n", scp->iss32.state.ebp); | |
239 | kprintf("scp->iss32.state.cr2: 0x%08x\n", scp->iss32.state.cr2); | |
240 | kprintf("scp->iss32.state.ebx: 0x%08x\n", scp->iss32.state.ebx); | |
241 | kprintf("scp->iss32.state.edx: 0x%08x\n", scp->iss32.state.edx); | |
242 | kprintf("scp->iss32.state.ecx: 0x%08x\n", scp->iss32.state.ecx); | |
243 | kprintf("scp->iss32.state.eax: 0x%08x\n", scp->iss32.state.eax); | |
244 | kprintf("scp->iss32.state.trapno: 0x%08x\n", scp->iss32.state.eax); | |
245 | kprintf("scp->iss32.state.eip: 0x%08x\n", scp->iss32.state.eip); | |
246 | kprintf("scp->iss32.state.cs: 0x%08x\n", scp->iss32.state.cs); | |
247 | kprintf("scp->iss32.state.efl: 0x%08x\n", scp->iss32.state.efl); | |
248 | kprintf("scp->iss32.state.uesp: 0x%08x\n", scp->iss32.state.uesp); | |
249 | kprintf("scp->iss32.state.ss: 0x%08x\n", scp->iss32.state.ss); | |
250 | ||
251 | postcode(0x99); | |
252 | } | |
253 | ||
254 | void | |
255 | dump_frame64(x86_saved_state64_t *sp) | |
256 | { | |
257 | unsigned int i; | |
258 | uint64_t *ip = (uint64_t *) sp; | |
259 | ||
260 | kprintf("dump_frame64(%p):\n", sp); | |
261 | ||
262 | for (i = 0; | |
263 | i < sizeof(x86_saved_state64_t)/sizeof(uint64_t); | |
264 | i++, ip++) | |
2d21ac55 | 265 | kprintf("%p: 0x%016llx\n", ip, *ip); |
0c530ab8 A |
266 | |
267 | kprintf("sp->isf.trapno: 0x%08x\n", sp->isf.trapno); | |
b0d623f7 | 268 | kprintf("sp->isf.trapfn: 0x%016llx\n", sp->isf.trapfn); |
0c530ab8 A |
269 | kprintf("sp->isf.err: 0x%016llx\n", sp->isf.err); |
270 | kprintf("sp->isf.rip: 0x%016llx\n", sp->isf.rip); | |
271 | kprintf("sp->isf.cs: 0x%016llx\n", sp->isf.cs); | |
272 | kprintf("sp->isf.rflags: 0x%016llx\n", sp->isf.rflags); | |
273 | kprintf("sp->isf.rsp: 0x%016llx\n", sp->isf.rsp); | |
274 | kprintf("sp->isf.ss: 0x%016llx\n", sp->isf.ss); | |
275 | ||
276 | kprintf("sp->fs: 0x%016x\n", sp->fs); | |
277 | kprintf("sp->gs: 0x%016x\n", sp->gs); | |
278 | kprintf("sp->rax: 0x%016llx\n", sp->rax); | |
279 | kprintf("sp->rcx: 0x%016llx\n", sp->rcx); | |
280 | kprintf("sp->rbx: 0x%016llx\n", sp->rbx); | |
281 | kprintf("sp->rbp: 0x%016llx\n", sp->rbp); | |
282 | kprintf("sp->r11: 0x%016llx\n", sp->r11); | |
283 | kprintf("sp->r12: 0x%016llx\n", sp->r12); | |
284 | kprintf("sp->r13: 0x%016llx\n", sp->r13); | |
285 | kprintf("sp->r14: 0x%016llx\n", sp->r14); | |
286 | kprintf("sp->r15: 0x%016llx\n", sp->r15); | |
287 | kprintf("sp->cr2: 0x%016llx\n", sp->cr2); | |
288 | kprintf("sp->v_arg8: 0x%016llx\n", sp->v_arg8); | |
289 | kprintf("sp->v_arg7: 0x%016llx\n", sp->v_arg7); | |
290 | kprintf("sp->v_arg6: 0x%016llx\n", sp->v_arg6); | |
291 | kprintf("sp->r9: 0x%016llx\n", sp->r9); | |
292 | kprintf("sp->r8: 0x%016llx\n", sp->r8); | |
293 | kprintf("sp->r10: 0x%016llx\n", sp->r10); | |
294 | kprintf("sp->rdx: 0x%016llx\n", sp->rdx); | |
295 | kprintf("sp->rsi: 0x%016llx\n", sp->rsi); | |
296 | kprintf("sp->rdi: 0x%016llx\n", sp->rdi); | |
297 | ||
298 | postcode(0x98); | |
299 | } | |
300 | ||
301 | void | |
302 | dump_gdt(void *gdtp) | |
303 | { | |
304 | unsigned int i; | |
305 | uint32_t *ip = (uint32_t *) gdtp; | |
306 | ||
2d21ac55 | 307 | kprintf("GDT:\n"); |
0c530ab8 A |
308 | for (i = 0; i < GDTSZ; i++, ip += 2) { |
309 | kprintf("%p: 0x%08x\n", ip+0, *(ip+0)); | |
310 | kprintf("%p: 0x%08x\n", ip+1, *(ip+1)); | |
311 | } | |
312 | } | |
313 | ||
314 | void | |
315 | dump_ldt(void *ldtp) | |
316 | { | |
317 | unsigned int i; | |
318 | uint32_t *ip = (uint32_t *) ldtp; | |
319 | ||
2d21ac55 | 320 | kprintf("LDT:\n"); |
0c530ab8 A |
321 | for (i = 0; i < LDTSZ_MIN; i++, ip += 2) { |
322 | kprintf("%p: 0x%08x\n", ip+0, *(ip+0)); | |
323 | kprintf("%p: 0x%08x\n", ip+1, *(ip+1)); | |
324 | } | |
325 | } | |
326 | ||
327 | void | |
328 | dump_idt(void *idtp) | |
329 | { | |
330 | unsigned int i; | |
331 | uint32_t *ip = (uint32_t *) idtp; | |
332 | ||
2d21ac55 | 333 | kprintf("IDT64:\n"); |
0c530ab8 A |
334 | for (i = 0; i < 16; i++, ip += 4) { |
335 | kprintf("%p: 0x%08x\n", ip+0, *(ip+0)); | |
336 | kprintf("%p: 0x%08x\n", ip+1, *(ip+1)); | |
337 | kprintf("%p: 0x%08x\n", ip+2, *(ip+2)); | |
338 | kprintf("%p: 0x%08x\n", ip+3, *(ip+3)); | |
339 | } | |
340 | } | |
341 | ||
342 | void | |
343 | dump_tss(void *tssp) | |
344 | { | |
345 | unsigned int i; | |
346 | uint32_t *ip = (uint32_t *) tssp; | |
347 | ||
2d21ac55 | 348 | kprintf("TSS64:\n"); |
0c530ab8 A |
349 | for (i = 0; i < sizeof(master_ktss64)/sizeof(uint32_t); i++, ip++) { |
350 | kprintf("%p: 0x%08x\n", ip+0, *(ip+0)); | |
351 | } | |
352 | } | |
316670eb A |
353 | |
354 | #if defined(__x86_64__) | |
355 | void dump_regs64(void) | |
356 | { | |
357 | ||
358 | #define SNAP_REG(reg) \ | |
359 | uint64_t reg; \ | |
360 | __asm__ volatile("mov %%" #reg ", %0" : "=m" (reg)) | |
361 | ||
362 | #define KPRINT_REG(reg) \ | |
363 | kprintf("%3s: %p\n", #reg, (void *) reg) | |
364 | ||
365 | SNAP_REG(rsp); | |
366 | SNAP_REG(rbp); | |
367 | SNAP_REG(rax); | |
368 | SNAP_REG(rbx); | |
369 | SNAP_REG(rcx); | |
370 | SNAP_REG(rdx); | |
371 | SNAP_REG(rsi); | |
372 | SNAP_REG(rdi); | |
373 | SNAP_REG(r8); | |
374 | SNAP_REG(r9); | |
375 | SNAP_REG(r10); | |
376 | SNAP_REG(r11); | |
377 | SNAP_REG(r12); | |
378 | SNAP_REG(r13); | |
379 | SNAP_REG(r14); | |
380 | ||
381 | KPRINT_REG(rsp); | |
382 | KPRINT_REG(rbp); | |
383 | KPRINT_REG(rax); | |
384 | KPRINT_REG(rbx); | |
385 | KPRINT_REG(rcx); | |
386 | KPRINT_REG(rdx); | |
387 | KPRINT_REG(rsi); | |
388 | KPRINT_REG(rdi); | |
389 | KPRINT_REG(r8); | |
390 | KPRINT_REG(r9); | |
391 | KPRINT_REG(r10); | |
392 | KPRINT_REG(r11); | |
393 | KPRINT_REG(r12); | |
394 | KPRINT_REG(r13); | |
395 | KPRINT_REG(r14); | |
396 | } | |
397 | #endif /* __x86_64__ */ | |
0c530ab8 | 398 | #endif /* DEBUG */ |