bs3-fpustate-1-template.mac

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1	; $Id: bs3-fpustate-1-template.mac 106061 2024-09-16 14:03:52Z vboxsync $
2	;; @file
3	; BS3Kit - bs3-fpustate-1, assembly template.
4	;
5
6	;
7	; Copyright (C) 2007-2024 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	; The contents of this file may alternatively be used under the terms
26	; of the Common Development and Distribution License Version 1.0
27	; (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
28	; in the VirtualBox distribution, in which case the provisions of the
29	; CDDL are applicable instead of those of the GPL.
30	;
31	; You may elect to license modified versions of this file under the
32	; terms and conditions of either the GPL or the CDDL or both.
33	;
34	; SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
35	;
36
37
38	;*********************************************************************************************************************************
39	;* Header Files *
40	;*********************************************************************************************************************************
41	%include "bs3kit-template-header.mac" ; setup environment
42
43
44	;*********************************************************************************************************************************
45	;* External Symbols *
46	;*********************************************************************************************************************************
47	TMPL_BEGIN_TEXT
48
49
50	;;
51	; Initializes the FPU state and saves it to pFxState.
52	;
53	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_InitState)(X86FXSTATE BS3_FAR pFxState, void pvMmioReg);
54	;
55	BS3_PROC_BEGIN_MODE bs3FpuState1_InitState, BS3_PBC_NEAR
56	BS3_CALL_CONV_PROLOG 2
57	push xBP
58	mov xBP, xSP
59	push xBX
60	TONLY16 push ds
61	pushf
62	TONLY64 sub xSP, 20h
63
64	;
65	; x87 state.
66	;
67	fninit
68	fld dword [TMPL_DATA16_WRT(g_r32V1)]
69	fld qword [TMPL_DATA16_WRT(g_r64V1)]
70	fld tword [TMPL_DATA16_WRT(g_r80V1)]
71	fld qword [TMPL_DATA16_WRT(g_r64V1)]
72	fld dword [TMPL_DATA16_WRT(g_r32V2)]
73	fld dword [TMPL_DATA16_WRT(g_r80_QNaNMax)]
74	fld tword [TMPL_DATA16_WRT(g_r80_SNaNMax)]
75	fld tword [TMPL_DATA16_WRT(g_r80_ThirtyTwo)]
76
77	;
78	; We'll later be using FMUL to test actually using the FPU in RC & R0,
79	; so for everything to line up correctly with FPU CS:IP and FPU DS:DP,
80	; we'll call the function here too. This has the benefitial side effect
81	; of loading correct FPU DS/DS values so we can check that they don't
82	; get lost either. Also, we now don't have to guess whether the CPU
83	; emulation sets CS/DS or not.
84	;
85	TONLY16 push xPRE [xBP + xCB + cbCurRetAddr + sCB + 2]
86	push xPRE [xBP + xCB + cbCurRetAddr + sCB]
87	BS3_CALL TMPL_NM(bs3FpuState1_FMul), 1
88	add xSP, sCB
89
90	;
91	; SSE state
92	;
93	movdqu xmm0, [TMPL_DATA16_WRT(g_r32_0dot1)]
94	movdqu xmm1, [TMPL_DATA16_WRT(g_r32_Two)]
95	movdqu xmm2, [TMPL_DATA16_WRT(g_r32_ThirtyTwo)]
96	movdqu xmm3, [TMPL_DATA16_WRT(g_r32_SNaN)]
97	movdqu xmm4, [TMPL_DATA16_WRT(g_r80_ThirtyTwo)]
98	movdqu xmm5, [TMPL_DATA16_WRT(g_r32_NegQNaN)]
99	movdqu xmm6, [TMPL_DATA16_WRT(g_r64_Zero)]
100	movdqu xmm7, [TMPL_DATA16_WRT(g_r64_Two)]
101	%if TMPL_BITS == 64
102	movdqu xmm8, [TMPL_DATA16_WRT(g_r64_Ten)]
103	movdqu xmm9, [TMPL_DATA16_WRT(g_r64_ThirtyTwo)]
104	movdqu xmm10, [TMPL_DATA16_WRT(g_r64_Max)]
105	movdqu xmm11, [TMPL_DATA16_WRT(g_r64_SNaN)]
106	movdqu xmm12, [TMPL_DATA16_WRT(g_r64_NegQNaN)]
107	movdqu xmm13, [TMPL_DATA16_WRT(g_r64_QNaNMax)]
108	movdqu xmm14, [TMPL_DATA16_WRT(g_r64_DnMax)]
109	movdqu xmm15, [TMPL_DATA16_WRT(g_r80_Eleven)]
110	%endif
111
112	;; @todo status regs
113
114	;
115	; Save it. Note that DS is no longer valid in 16-bit code.
116	; To be on the safe side, we load and save the state once again.
117	;
118	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
119	mov xBX, [xBP + xCB + cbCurRetAddr]
120	cli
121	%if TMPL_BITS == 64
122	o64 fxsave [xBX]
123	fninit
124	o64 fxrstor [xBX]
125	o64 fxsave [xBX]
126	%else
127	fxsave [xBX]
128	fninit
129	fxrstor [xBX]
130	fxsave [xBX]
131	%endif
132
133	.return:
134	TONLY64 add xSP, 20h
135	popf
136	TONLY16 pop ds
137	pop xBX
138	mov xSP, xBP
139	pop xBP
140	BS3_CALL_CONV_EPILOG 2
141	BS3_HYBRID_RET
142	BS3_PROC_END_MODE bs3FpuState1_InitState
143
144
145	;;
146	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_Restore)(X86FXSTATE const BS3_FAR *pFxState);
147	;
148	BS3_PROC_BEGIN_MODE bs3FpuState1_Restore, BS3_PBC_NEAR
149	push xBP
150	mov xBP, xSP
151
152	%if TMPL_BITS == 64
153	o64 fxrstor [rcx]
154
155	%elif TMPL_BITS == 32
156	mov eax, [xBP + xCB*2]
157	fxrstor [eax]
158
159	%elif TMPL_BITS == 16
160	mov ax, ds
161	mov ds, [xBP + xCB + cbCurRetAddr + 2]
162	mov xBX, [xBP + xCB + cbCurRetAddr]
163	fxrstor [bx]
164	mov ds, ax
165	%else
166	%error TMPL_BITS
167	%endif
168
169	mov xSP, xBP
170	pop xBP
171	BS3_HYBRID_RET
172	BS3_PROC_END_MODE bs3FpuState1_Restore
173
174	;;
175	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_Save)(X86FXSTATE BS3_FAR *pFxState);
176	;
177	BS3_PROC_BEGIN_MODE bs3FpuState1_Save, BS3_PBC_NEAR
178	push xBP
179	mov xBP, xSP
180
181	%if TMPL_BITS == 64
182	o64 fxsave [rcx]
183
184	%elif TMPL_BITS == 32
185	mov eax, [xBP + xCB*2]
186	fxsave [eax]
187
188	%elif TMPL_BITS == 16
189	push bx
190	push ds
191	mov ds, [xBP + xCB + cbCurRetAddr + 2]
192	mov bx, [xBP + xCB + cbCurRetAddr]
193	fxsave [bx]
194	pop ds
195	pop bx
196	%else
197	%error TMPL_BITS
198	%endif
199
200	mov xSP, xBP
201	pop xBP
202	BS3_HYBRID_RET
203	BS3_PROC_END_MODE bs3FpuState1_Save
204
205
206	;;
207	; Performs a MOVDQU write on the specified memory.
208	;
209	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_MovDQU_Write)(void *pvMmioReg);
210	;
211	BS3_PROC_BEGIN_MODE bs3FpuState1_MovDQU_Write, BS3_PBC_NEAR
212	BS3_CALL_CONV_PROLOG 1
213	push xBP
214	mov xBP, xSP
215	push xBX
216	TONLY16 push ds
217
218	; Load the register pointer.
219	mov xBX, [xBP + xCB + cbCurRetAddr]
220	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
221
222	; Do read.
223	movdqu [xBX], xmm0
224
225	TONLY16 pop ds
226	pop xBX
227	leave
228	BS3_CALL_CONV_EPILOG 1
229	BS3_HYBRID_RET
230	BS3_PROC_END_MODE bs3FpuState1_MovDQU_Write
231
232
233	;;
234	; Performs a MOVDQU write to the specified memory.
235	;
236	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_MovDQU_Read)(void *pvMmioReg);
237	;
238	BS3_PROC_BEGIN_MODE bs3FpuState1_MovDQU_Read, BS3_PBC_NEAR
239	BS3_CALL_CONV_PROLOG 2
240	push xBP
241	mov xBP, xSP
242	push xBX
243	TONLY16 push ds
244	sub xSP, 20h
245	%if TMPL_BITS == 16
246	movdqu [xBP - xCB - xCB - 2 - 18h], xmm2
247	%else
248	movdqu [xSP], xmm2
249	%endif
250
251	; Load the register pointer.
252	mov xBX, [xBP + xCB + cbCurRetAddr]
253	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
254
255
256	; Do read.
257	movdqu xmm2, [xBX]
258
259	; Save the result.
260	mov xBX, [xBP + xCB + cbCurRetAddr + sCB]
261	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + sCB + 2]
262	movups [xBX], xmm2
263
264	%if TMPL_BITS == 16
265	movdqu xmm2, [xBP - xCB - xCB - 2 - 18h]
266	%else
267	movdqu xmm2, [xSP]
268	%endif
269	add xSP, 20h
270	TONLY16 pop ds
271	pop xBX
272	mov xSP, xBP
273	pop xBP
274	BS3_CALL_CONV_EPILOG 2
275	BS3_HYBRID_RET
276	BS3_PROC_END_MODE bs3FpuState1_MovDQU_Read
277
278
279	;;
280	; Performs a MOVUPS write on the specified memory.
281	;
282	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_MovUPS_Write)(void *pvMmioReg);
283	;
284	BS3_PROC_BEGIN_MODE bs3FpuState1_MovUPS_Write, BS3_PBC_NEAR
285	BS3_CALL_CONV_PROLOG 1
286	push xBP
287	mov xBP, xSP
288	push xBX
289	TONLY16 push ds
290
291	; Load the register pointer.
292	mov xBX, [xBP + xCB + cbCurRetAddr]
293	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
294
295	; Do read.
296	movups [xBX], xmm3
297
298	TONLY16 pop ds
299	pop xBX
300	leave
301	BS3_CALL_CONV_EPILOG 1
302	BS3_HYBRID_RET
303	BS3_PROC_END_MODE bs3FpuState1_MovUPS_Write
304
305
306	;;
307	; Performs a MOVUPS write to the specified memory.
308	;
309	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_MovUPS_Read)(void pvMmioReg, void pvResult);
310	;
311	BS3_PROC_BEGIN_MODE bs3FpuState1_MovUPS_Read, BS3_PBC_NEAR
312	BS3_CALL_CONV_PROLOG 2
313	push xBP
314	mov xBP, xSP
315	push xBX
316	TONLY16 push ds
317	sub xSP, 20h
318	%if TMPL_BITS == 16
319	movups [xBP - xCB - xCB - 2 - 18h], xmm1
320	%else
321	movups [xSP], xmm1
322	%endif
323
324	; Load the register pointer.
325	mov xBX, [xBP + xCB + cbCurRetAddr]
326	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
327
328
329	; Do read.
330	movups xmm1, [xBX]
331
332	; Save the result.
333	mov xBX, [xBP + xCB + cbCurRetAddr + sCB]
334	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + sCB + 2]
335	movups [xBX], xmm1
336
337	%if TMPL_BITS == 16
338	movups xmm1, [xBP - xCB - xCB - 2 - 18h]
339	%else
340	movups xmm1, [xSP]
341	%endif
342	add xSP, 20h
343	TONLY16 pop ds
344	pop xBX
345	mov xSP, xBP
346	pop xBP
347	BS3_CALL_CONV_EPILOG 2
348	BS3_HYBRID_RET
349	BS3_PROC_END_MODE bs3FpuState1_MovUPS_Read
350
351
352	;;
353	; Performs a FNSTENV write on the specified memory.
354	;
355	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_FNStEnv)(void *pvMmioReg);
356	;
357	BS3_PROC_BEGIN_MODE bs3FpuState1_FNStEnv, BS3_PBC_NEAR
358	BS3_CALL_CONV_PROLOG 1
359	push xBP
360	mov xBP, xSP
361	push xBX
362	TONLY16 push ds
363
364	; Load the register pointer.
365	mov xBX, [xBP + xCB + cbCurRetAddr]
366	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
367
368	; Just write.
369	fnstenv [xBX]
370
371	TONLY16 pop ds
372	pop xBX
373	mov xSP, xBP
374	pop xBP
375	BS3_CALL_CONV_EPILOG 1
376	BS3_HYBRID_RET
377	BS3_PROC_END_MODE bs3FpuState1_FNStEnv
378
379
380	;;
381	; Performs a FMUL on the specified memory, after writing a 64-bit value to it first.
382	;
383	; BS3_DECL_NEAR(void) TMPL_NM(bs3FpuState1_FMul)(void pvMmioReg, void pvResultIgnored);
384	;
385	BS3_PROC_BEGIN_MODE bs3FpuState1_FMul, BS3_PBC_NEAR
386	BS3_CALL_CONV_PROLOG 2
387	push xBP
388	mov xBP, xSP
389	push xBX
390	TONLY16 push ds
391
392	; Load the value we'll be multiplying with into register(s) while ds is DATA16.
393	mov sAX, [TMPL_DATA16_WRT(g_r64_One)]
394	TNOT64 mov edx, [4 + TMPL_DATA16_WRT(g_r64_One)]
395
396	; Load the register pointer.
397	mov xBX, [xBP + xCB + cbCurRetAddr]
398	TONLY16 mov ds, [xBP + xCB + cbCurRetAddr + 2]
399
400	; Just write.
401	mov [xBX], sAX
402	TNOT64 mov [xBX + 4], edx
403	call .do_it
404
405	TONLY16 pop ds
406	pop xBX
407	mov xSP, xBP
408	pop xBP
409	BS3_CALL_CONV_EPILOG 2
410	BS3_HYBRID_RET
411	.do_it:
412	fmul qword [xBX]
413	ret
414	BS3_PROC_END_MODE bs3FpuState1_FMul
415
416
417	%include "bs3kit-template-footer.mac" ; reset environment
418

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