HMR0UtilA.asm@ 106061

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1	; $Id: HMR0UtilA.asm 106061 2024-09-16 14:03:52Z vboxsync $
2	;; @file
3	; HM - Ring-0 VMX & SVM Helpers.
4	;
5
6	;
7	; Copyright (C) 2006-2024 Oracle and/or its affiliates.
8	;
9	; This file is part of VirtualBox base platform packages, as
10	; available from https://www.virtualbox.org.
11	;
12	; This program is free software; you can redistribute it and/or
13	; modify it under the terms of the GNU General Public License
14	; as published by the Free Software Foundation, in version 3 of the
15	; License.
16	;
17	; This program is distributed in the hope that it will be useful, but
18	; WITHOUT ANY WARRANTY; without even the implied warranty of
19	; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
20	; General Public License for more details.
21	;
22	; You should have received a copy of the GNU General Public License
23	; along with this program; if not, see <https://www.gnu.org/licenses>.
24	;
25	; SPDX-License-Identifier: GPL-3.0-only
26	;
27
28	;*********************************************************************************************************************************
29	;* Header Files *
30	;*********************************************************************************************************************************
31	%include "VBox/asmdefs.mac"
32	%include "VBox/err.mac"
33	%include "VBox/vmm/hm_vmx.mac"
34	%include "iprt/x86.mac"
35
36
37
38	BEGINCODE
39
40	;;
41	; Executes VMWRITE, 64-bit value.
42	;
43	; @returns VBox status code.
44	; @param idxField x86: [ebp + 08h] msc: rcx gcc: rdi VMCS index.
45	; @param u64Data x86: [ebp + 0ch] msc: rdx gcc: rsi VM field value.
46	;
47	ALIGNCODE(16)
48	BEGINPROC VMXWriteVmcs64
49	%ifdef RT_ARCH_AMD64
50	%ifdef ASM_CALL64_GCC
51	and edi, 0ffffffffh
52	xor rax, rax
53	vmwrite rdi, rsi
54	%else
55	and ecx, 0ffffffffh
56	xor rax, rax
57	vmwrite rcx, rdx
58	%endif
59	%else ; RT_ARCH_X86
60	mov ecx, [esp + 4] ; idxField
61	lea edx, [esp + 8] ; &u64Data
62	vmwrite ecx, [edx] ; low dword
63	jz .done
64	jc .done
65	inc ecx
66	xor eax, eax
67	vmwrite ecx, [edx + 4] ; high dword
68	.done:
69	%endif ; RT_ARCH_X86
70	jnc .valid_vmcs
71	mov eax, VERR_VMX_INVALID_VMCS_PTR
72	ret
73	.valid_vmcs:
74	jnz .the_end
75	mov eax, VERR_VMX_INVALID_VMCS_FIELD
76	.the_end:
77	ret
78	ENDPROC VMXWriteVmcs64
79
80
81	;;
82	; Executes VMREAD, 64-bit value.
83	;
84	; @returns VBox status code.
85	; @param idxField VMCS index.
86	; @param pData Where to store VM field value.
87	;
88	;DECLASM(int) VMXReadVmcs64(uint32_t idxField, uint64_t *pData);
89	ALIGNCODE(16)
90	BEGINPROC VMXReadVmcs64
91	%ifdef RT_ARCH_AMD64
92	%ifdef ASM_CALL64_GCC
93	and edi, 0ffffffffh
94	xor rax, rax
95	vmread [rsi], rdi
96	%else
97	and ecx, 0ffffffffh
98	xor rax, rax
99	vmread [rdx], rcx
100	%endif
101	%else ; RT_ARCH_X86
102	mov ecx, [esp + 4] ; idxField
103	mov edx, [esp + 8] ; pData
104	vmread [edx], ecx ; low dword
105	jz .done
106	jc .done
107	inc ecx
108	xor eax, eax
109	vmread [edx + 4], ecx ; high dword
110	.done:
111	%endif ; RT_ARCH_X86
112	jnc .valid_vmcs
113	mov eax, VERR_VMX_INVALID_VMCS_PTR
114	ret
115	.valid_vmcs:
116	jnz .the_end
117	mov eax, VERR_VMX_INVALID_VMCS_FIELD
118	.the_end:
119	ret
120	ENDPROC VMXReadVmcs64
121
122
123	;;
124	; Executes VMREAD, 32-bit value.
125	;
126	; @returns VBox status code.
127	; @param idxField VMCS index.
128	; @param pu32Data Where to store VM field value.
129	;
130	;DECLASM(int) VMXReadVmcs32(uint32_t idxField, uint32_t *pu32Data);
131	ALIGNCODE(16)
132	BEGINPROC VMXReadVmcs32
133	%ifdef RT_ARCH_AMD64
134	%ifdef ASM_CALL64_GCC
135	and edi, 0ffffffffh
136	xor rax, rax
137	vmread r10, rdi
138	mov [rsi], r10d
139	%else
140	and ecx, 0ffffffffh
141	xor rax, rax
142	vmread r10, rcx
143	mov [rdx], r10d
144	%endif
145	%else ; RT_ARCH_X86
146	mov ecx, [esp + 4] ; idxField
147	mov edx, [esp + 8] ; pu32Data
148	xor eax, eax
149	vmread [edx], ecx
150	%endif ; RT_ARCH_X86
151	jnc .valid_vmcs
152	mov eax, VERR_VMX_INVALID_VMCS_PTR
153	ret
154	.valid_vmcs:
155	jnz .the_end
156	mov eax, VERR_VMX_INVALID_VMCS_FIELD
157	.the_end:
158	ret
159	ENDPROC VMXReadVmcs32
160
161
162	;;
163	; Executes VMWRITE, 32-bit value.
164	;
165	; @returns VBox status code.
166	; @param idxField VMCS index.
167	; @param u32Data Where to store VM field value.
168	;
169	;DECLASM(int) VMXWriteVmcs32(uint32_t idxField, uint32_t u32Data);
170	ALIGNCODE(16)
171	BEGINPROC VMXWriteVmcs32
172	%ifdef RT_ARCH_AMD64
173	%ifdef ASM_CALL64_GCC
174	and edi, 0ffffffffh
175	and esi, 0ffffffffh
176	xor rax, rax
177	vmwrite rdi, rsi
178	%else
179	and ecx, 0ffffffffh
180	and edx, 0ffffffffh
181	xor rax, rax
182	vmwrite rcx, rdx
183	%endif
184	%else ; RT_ARCH_X86
185	mov ecx, [esp + 4] ; idxField
186	mov edx, [esp + 8] ; u32Data
187	xor eax, eax
188	vmwrite ecx, edx
189	%endif ; RT_ARCH_X86
190	jnc .valid_vmcs
191	mov eax, VERR_VMX_INVALID_VMCS_PTR
192	ret
193	.valid_vmcs:
194	jnz .the_end
195	mov eax, VERR_VMX_INVALID_VMCS_FIELD
196	.the_end:
197	ret
198	ENDPROC VMXWriteVmcs32
199
200
201	;;
202	; Executes VMXON.
203	;
204	; @returns VBox status code.
205	; @param HCPhysVMXOn Physical address of VMXON structure.
206	;
207	;DECLASM(int) VMXEnable(RTHCPHYS HCPhysVMXOn);
208	BEGINPROC VMXEnable
209	%ifdef RT_ARCH_AMD64
210	xor rax, rax
211	%ifdef ASM_CALL64_GCC
212	push rdi
213	%else
214	push rcx
215	%endif
216	vmxon [rsp]
217	%else ; RT_ARCH_X86
218	xor eax, eax
219	vmxon [esp + 4]
220	%endif ; RT_ARCH_X86
221	jnc .good
222	mov eax, VERR_VMX_INVALID_VMXON_PTR
223	jmp .the_end
224
225	.good:
226	jnz .the_end
227	mov eax, VERR_VMX_VMXON_FAILED
228
229	.the_end:
230	%ifdef RT_ARCH_AMD64
231	add rsp, 8
232	%endif
233	ret
234	ENDPROC VMXEnable
235
236
237	;;
238	; Executes VMXOFF.
239	;
240	;DECLASM(void) VMXDisable(void);
241	BEGINPROC VMXDisable
242	vmxoff
243	.the_end:
244	ret
245	ENDPROC VMXDisable
246
247
248	;;
249	; Executes VMCLEAR.
250	;
251	; @returns VBox status code.
252	; @param HCPhysVmcs Physical address of VM control structure.
253	;
254	;DECLASM(int) VMXClearVmcs(RTHCPHYS HCPhysVmcs);
255	ALIGNCODE(16)
256	BEGINPROC VMXClearVmcs
257	%ifdef RT_ARCH_AMD64
258	xor rax, rax
259	%ifdef ASM_CALL64_GCC
260	push rdi
261	%else
262	push rcx
263	%endif
264	vmclear [rsp]
265	%else ; RT_ARCH_X86
266	xor eax, eax
267	vmclear [esp + 4]
268	%endif ; RT_ARCH_X86
269	jnc .the_end
270	mov eax, VERR_VMX_INVALID_VMCS_PTR
271	.the_end:
272	%ifdef RT_ARCH_AMD64
273	add rsp, 8
274	%endif
275	ret
276	ENDPROC VMXClearVmcs
277
278
279	;;
280	; Executes VMPTRLD.
281	;
282	; @returns VBox status code.
283	; @param HCPhysVmcs Physical address of VMCS structure.
284	;
285	;DECLASM(int) VMXLoadVmcs(RTHCPHYS HCPhysVmcs);
286	ALIGNCODE(16)
287	BEGINPROC VMXLoadVmcs
288	%ifdef RT_ARCH_AMD64
289	xor rax, rax
290	%ifdef ASM_CALL64_GCC
291	push rdi
292	%else
293	push rcx
294	%endif
295	vmptrld [rsp]
296	%else
297	xor eax, eax
298	vmptrld [esp + 4]
299	%endif
300	jnc .the_end
301	mov eax, VERR_VMX_INVALID_VMCS_PTR
302	.the_end:
303	%ifdef RT_ARCH_AMD64
304	add rsp, 8
305	%endif
306	ret
307	ENDPROC VMXLoadVmcs
308
309
310	;;
311	; Executes VMPTRST.
312	;
313	; @returns VBox status code.
314	; @param [esp + 04h] gcc:rdi msc:rcx Param 1 - First parameter - Address that will receive the current pointer.
315	;
316	;DECLASM(int) VMXGetCurrentVmcs(RTHCPHYS *pVMCS);
317	BEGINPROC VMXGetCurrentVmcs
318	%ifdef RT_OS_OS2
319	mov eax, VERR_NOT_SUPPORTED
320	ret
321	%else
322	%ifdef RT_ARCH_AMD64
323	%ifdef ASM_CALL64_GCC
324	vmptrst qword [rdi]
325	%else
326	vmptrst qword [rcx]
327	%endif
328	%else
329	vmptrst qword [esp+04h]
330	%endif
331	xor eax, eax
332	.the_end:
333	ret
334	%endif
335	ENDPROC VMXGetCurrentVmcs
336
337
338	;;
339	; Invalidate a page using INVEPT.
340	;
341	; @param enmTlbFlush msc:ecx gcc:edi x86:[esp+04] Type of flush.
342	; @param pDescriptor msc:edx gcc:esi x86:[esp+08] Descriptor pointer.
343	;
344	;DECLASM(int) VMXR0InvEPT(VMXTLBFLUSHEPT enmTlbFlush, uint64_t *pDescriptor);
345	BEGINPROC VMXR0InvEPT
346	%ifdef RT_ARCH_AMD64
347	%ifdef ASM_CALL64_GCC
348	and edi, 0ffffffffh
349	xor rax, rax
350	; invept rdi, qword [rsi]
351	DB 0x66, 0x0F, 0x38, 0x80, 0x3E
352	%else
353	and ecx, 0ffffffffh
354	xor rax, rax
355	; invept rcx, qword [rdx]
356	DB 0x66, 0x0F, 0x38, 0x80, 0xA
357	%endif
358	%else
359	mov ecx, [esp + 4]
360	mov edx, [esp + 8]
361	xor eax, eax
362	; invept ecx, qword [edx]
363	DB 0x66, 0x0F, 0x38, 0x80, 0xA
364	%endif
365	jnc .valid_vmcs
366	mov eax, VERR_VMX_INVALID_VMCS_PTR
367	ret
368	.valid_vmcs:
369	jnz .the_end
370	mov eax, VERR_INVALID_PARAMETER
371	.the_end:
372	ret
373	ENDPROC VMXR0InvEPT
374
375
376	;;
377	; Invalidate a page using INVVPID.
378	;
379	; @param enmTlbFlush msc:ecx gcc:edi x86:[esp+04] Type of flush
380	; @param pDescriptor msc:edx gcc:esi x86:[esp+08] Descriptor pointer
381	;
382	;DECLASM(int) VMXR0InvVPID(VMXTLBFLUSHVPID enmTlbFlush, uint64_t *pDescriptor);
383	BEGINPROC VMXR0InvVPID
384	%ifdef RT_ARCH_AMD64
385	%ifdef ASM_CALL64_GCC
386	and edi, 0ffffffffh
387	xor rax, rax
388	; invvpid rdi, qword [rsi]
389	DB 0x66, 0x0F, 0x38, 0x81, 0x3E
390	%else
391	and ecx, 0ffffffffh
392	xor rax, rax
393	; invvpid rcx, qword [rdx]
394	DB 0x66, 0x0F, 0x38, 0x81, 0xA
395	%endif
396	%else
397	mov ecx, [esp + 4]
398	mov edx, [esp + 8]
399	xor eax, eax
400	; invvpid ecx, qword [edx]
401	DB 0x66, 0x0F, 0x38, 0x81, 0xA
402	%endif
403	jnc .valid_vmcs
404	mov eax, VERR_VMX_INVALID_VMCS_PTR
405	ret
406	.valid_vmcs:
407	jnz .the_end
408	mov eax, VERR_INVALID_PARAMETER
409	.the_end:
410	ret
411	ENDPROC VMXR0InvVPID
412
413
414	%if GC_ARCH_BITS == 64
415	;;
416	; Executes INVLPGA.
417	;
418	; @param pPageGC msc:rcx gcc:rdi x86:[esp+04] Virtual page to invalidate
419	; @param uASID msc:rdx gcc:rsi x86:[esp+0C] Tagged TLB id
420	;
421	;DECLASM(void) SVMR0InvlpgA(RTGCPTR pPageGC, uint32_t uASID);
422	BEGINPROC SVMR0InvlpgA
423	%ifdef RT_ARCH_AMD64
424	%ifdef ASM_CALL64_GCC
425	mov rax, rdi
426	mov rcx, rsi
427	%else
428	mov rax, rcx
429	mov rcx, rdx
430	%endif
431	%else
432	mov eax, [esp + 4]
433	mov ecx, [esp + 0Ch]
434	%endif
435	invlpga [xAX], ecx
436	ret
437	ENDPROC SVMR0InvlpgA
438
439	%else ; GC_ARCH_BITS != 64
440	;;
441	; Executes INVLPGA
442	;
443	; @param pPageGC msc:ecx gcc:edi x86:[esp+04] Virtual page to invalidate
444	; @param uASID msc:edx gcc:esi x86:[esp+08] Tagged TLB id
445	;
446	;DECLASM(void) SVMR0InvlpgA(RTGCPTR pPageGC, uint32_t uASID);
447	BEGINPROC SVMR0InvlpgA
448	%ifdef RT_ARCH_AMD64
449	%ifdef ASM_CALL64_GCC
450	movzx rax, edi
451	mov ecx, esi
452	%else
453	; from http://www.cs.cmu.edu/~fp/courses/15213-s06/misc/asm64-handout.pdf:
454	; "Perhaps unexpectedly, instructions that move or generate 32-bit register
455	; values also set the upper 32 bits of the register to zero. Consequently
456	; there is no need for an instruction movzlq."
457	mov eax, ecx
458	mov ecx, edx
459	%endif
460	%else
461	mov eax, [esp + 4]
462	mov ecx, [esp + 8]
463	%endif
464	invlpga [xAX], ecx
465	ret
466	ENDPROC SVMR0InvlpgA
467
468	%endif ; GC_ARCH_BITS != 64
469

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source: vbox/trunk/src/VBox/VMM/VMMR0/HMR0UtilA.asm@ 106061

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