softmmu_template.h@ 29485

Last change on this file since 29485 was 26499, checked in by vboxsync, 15 years ago
recompier: whitespace cleanup. (Clean up whitespace on the foreign code before trying to merge in new changes again.)
Property svn:eol-style set to `native`
File size: 13.6 KB

Line
1	/*
2	* Software MMU support
3	*
4	* Copyright (c) 2003 Fabrice Bellard
5	*
6	* This library is free software; you can redistribute it and/or
7	* modify it under the terms of the GNU Lesser General Public
8	* License as published by the Free Software Foundation; either
9	* version 2 of the License, or (at your option) any later version.
10	*
11	* This library is distributed in the hope that it will be useful,
12	* but WITHOUT ANY WARRANTY; without even the implied warranty of
13	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14	* Lesser General Public License for more details.
15	*
16	* You should have received a copy of the GNU Lesser General Public
17	* License along with this library; if not, write to the Free Software
18	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
19	*/
20
21	/*
22	* Sun LGPL Disclaimer: For the avoidance of doubt, except that if any license choice
23	* other than GPL or LGPL is available it will apply instead, Sun elects to use only
24	* the Lesser General Public License version 2.1 (LGPLv2) at this time for any software where
25	* a choice of LGPL license versions is made available with the language indicating
26	* that LGPLv2 or any later version may be used, or where a choice of which version
27	* of the LGPL is applied is otherwise unspecified.
28	*/
29	#define DATA_SIZE (1 << SHIFT)
30
31	#if DATA_SIZE == 8
32	#define SUFFIX q
33	#define USUFFIX q
34	#define DATA_TYPE uint64_t
35	#define DATA_TYPE_PROMOTED uint64_t
36	#elif DATA_SIZE == 4
37	#define SUFFIX l
38	#define USUFFIX l
39	#define DATA_TYPE uint32_t
40	#ifdef VBOX
41	#define DATA_TYPE_PROMOTED RTCCUINTREG
42	#endif
43	#elif DATA_SIZE == 2
44	#define SUFFIX w
45	#define USUFFIX uw
46	#define DATA_TYPE uint16_t
47	#ifdef VBOX
48	#define DATA_TYPE_PROMOTED RTCCUINTREG
49	#endif
50	#elif DATA_SIZE == 1
51	#define SUFFIX b
52	#define USUFFIX ub
53	#define DATA_TYPE uint8_t
54	#ifdef VBOX
55	#define DATA_TYPE_PROMOTED RTCCUINTREG
56	#endif
57	#else
58	#error unsupported data size
59	#endif
60
61	#ifdef SOFTMMU_CODE_ACCESS
62	#define READ_ACCESS_TYPE 2
63	#define ADDR_READ addr_code
64	#else
65	#define READ_ACCESS_TYPE 0
66	#define ADDR_READ addr_read
67	#endif
68
69	static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
70	int mmu_idx,
71	void *retaddr);
72	#ifndef VBOX
73	static inline DATA_TYPE glue(io_read, SUFFIX)(target_phys_addr_t physaddr,
74	target_ulong addr,
75	void *retaddr)
76	#else
77	DECLINLINE(DATA_TYPE) glue(io_read, SUFFIX)(target_phys_addr_t physaddr,
78	target_ulong addr,
79	void *retaddr)
80	#endif
81	{
82	DATA_TYPE res;
83	int index;
84	index = (physaddr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
85	physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
86	env->mem_io_pc = (unsigned long)retaddr;
87	if (index > (IO_MEM_NOTDIRTY >> IO_MEM_SHIFT)
88	&& !can_do_io(env)) {
89	cpu_io_recompile(env, retaddr);
90	}
91
92	#if SHIFT <= 2
93	res = io_mem_read[index][SHIFT](io_mem_opaque[index], physaddr);
94	#else
95	#ifdef TARGET_WORDS_BIGENDIAN
96	res = (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr) << 32;
97	res \|= io_mem_read[index][2](io_mem_opaque[index], physaddr + 4);
98	#else
99	res = io_mem_read[index][2](io_mem_opaque[index], physaddr);
100	res \|= (uint64_t)io_mem_read[index][2](io_mem_opaque[index], physaddr + 4) << 32;
101	#endif
102	#endif /* SHIFT > 2 */
103	#ifdef USE_KQEMU
104	env->last_io_time = cpu_get_time_fast();
105	#endif
106	return res;
107	}
108
109	/* handle all cases except unaligned access which span two pages */
110	#ifndef VBOX
111	DATA_TYPE REGPARM glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
112	int mmu_idx)
113	#else
114	/* Load helpers invoked from generated code, and TCG makes an assumption
115	that valid value takes the whole register, why gcc after 4.3 may
116	use only lower part of register for smaller types. So force promoution. */
117	DATA_TYPE_PROMOTED REGPARM
118	glue(glue(__ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
119	int mmu_idx)
120	#endif
121	{
122	DATA_TYPE res;
123	int index;
124	target_ulong tlb_addr;
125	target_phys_addr_t addend;
126	void *retaddr;
127
128	/* test if there is match for unaligned or IO access */
129	/* XXX: could done more in memory macro in a non portable way */
130	index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
131	redo:
132	tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
133	if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK \| TLB_INVALID_MASK))) {
134	if (tlb_addr & ~TARGET_PAGE_MASK) {
135	/* IO access */
136	if ((addr & (DATA_SIZE - 1)) != 0)
137	goto do_unaligned_access;
138	retaddr = GETPC();
139	addend = env->iotlb[mmu_idx][index];
140	res = glue(io_read, SUFFIX)(addend, addr, retaddr);
141	} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
142	/* slow unaligned access (it spans two pages or IO) */
143	do_unaligned_access:
144	retaddr = GETPC();
145	#ifdef ALIGNED_ONLY
146	do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
147	#endif
148	res = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr,
149	mmu_idx, retaddr);
150	} else {
151	/* unaligned/aligned access in the same page */
152	#ifdef ALIGNED_ONLY
153	if ((addr & (DATA_SIZE - 1)) != 0) {
154	retaddr = GETPC();
155	do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
156	}
157	#endif
158	addend = env->tlb_table[mmu_idx][index].addend;
159	res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
160	}
161	} else {
162	/* the page is not in the TLB : fill it */
163	retaddr = GETPC();
164	#ifdef ALIGNED_ONLY
165	if ((addr & (DATA_SIZE - 1)) != 0)
166	do_unaligned_access(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
167	#endif
168	tlb_fill(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
169	goto redo;
170	}
171	return res;
172	}
173
174	/* handle all unaligned cases */
175	static DATA_TYPE glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(target_ulong addr,
176	int mmu_idx,
177	void *retaddr)
178	{
179	DATA_TYPE res, res1, res2;
180	int index, shift;
181	target_phys_addr_t addend;
182	target_ulong tlb_addr, addr1, addr2;
183
184	index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
185	redo:
186	tlb_addr = env->tlb_table[mmu_idx][index].ADDR_READ;
187	if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK \| TLB_INVALID_MASK))) {
188	if (tlb_addr & ~TARGET_PAGE_MASK) {
189	/* IO access */
190	if ((addr & (DATA_SIZE - 1)) != 0)
191	goto do_unaligned_access;
192	retaddr = GETPC();
193	addend = env->iotlb[mmu_idx][index];
194	res = glue(io_read, SUFFIX)(addend, addr, retaddr);
195	} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
196	do_unaligned_access:
197	/* slow unaligned access (it spans two pages) */
198	addr1 = addr & ~(DATA_SIZE - 1);
199	addr2 = addr1 + DATA_SIZE;
200	res1 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr1,
201	mmu_idx, retaddr);
202	res2 = glue(glue(slow_ld, SUFFIX), MMUSUFFIX)(addr2,
203	mmu_idx, retaddr);
204	shift = (addr & (DATA_SIZE - 1)) * 8;
205	#ifdef TARGET_WORDS_BIGENDIAN
206	res = (res1 << shift) \| (res2 >> ((DATA_SIZE * 8) - shift));
207	#else
208	res = (res1 >> shift) \| (res2 << ((DATA_SIZE * 8) - shift));
209	#endif
210	res = (DATA_TYPE)res;
211	} else {
212	/* unaligned/aligned access in the same page */
213	addend = env->tlb_table[mmu_idx][index].addend;
214	res = glue(glue(ld, USUFFIX), _raw)((uint8_t *)(long)(addr+addend));
215	}
216	} else {
217	/* the page is not in the TLB : fill it */
218	tlb_fill(addr, READ_ACCESS_TYPE, mmu_idx, retaddr);
219	goto redo;
220	}
221	return res;
222	}
223
224	#ifndef SOFTMMU_CODE_ACCESS
225
226	static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr,
227	DATA_TYPE val,
228	int mmu_idx,
229	void *retaddr);
230
231	#ifndef VBOX
232	static inline void glue(io_write, SUFFIX)(target_phys_addr_t physaddr,
233	DATA_TYPE val,
234	target_ulong addr,
235	void *retaddr)
236	#else
237	DECLINLINE(void) glue(io_write, SUFFIX)(target_phys_addr_t physaddr,
238	DATA_TYPE val,
239	target_ulong addr,
240	void *retaddr)
241	#endif
242	{
243	int index;
244	index = (physaddr >> IO_MEM_SHIFT) & (IO_MEM_NB_ENTRIES - 1);
245	physaddr = (physaddr & TARGET_PAGE_MASK) + addr;
246	if (index > (IO_MEM_NOTDIRTY >> IO_MEM_SHIFT)
247	&& !can_do_io(env)) {
248	cpu_io_recompile(env, retaddr);
249	}
250
251	env->mem_io_vaddr = addr;
252	env->mem_io_pc = (unsigned long)retaddr;
253	#if SHIFT <= 2
254	io_mem_write[index][SHIFT](io_mem_opaque[index], physaddr, val);
255	#else
256	#ifdef TARGET_WORDS_BIGENDIAN
257	io_mem_write[index][2](io_mem_opaque[index], physaddr, val >> 32);
258	io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val);
259	#else
260	io_mem_write[index][2](io_mem_opaque[index], physaddr, val);
261	io_mem_write[index][2](io_mem_opaque[index], physaddr + 4, val >> 32);
262	#endif
263	#endif /* SHIFT > 2 */
264	#ifdef USE_KQEMU
265	env->last_io_time = cpu_get_time_fast();
266	#endif
267	}
268
269	void REGPARM glue(glue(__st, SUFFIX), MMUSUFFIX)(target_ulong addr,
270	DATA_TYPE val,
271	int mmu_idx)
272	{
273	target_phys_addr_t addend;
274	target_ulong tlb_addr;
275	void *retaddr;
276	int index;
277
278	index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
279	redo:
280	tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
281	if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK \| TLB_INVALID_MASK))) {
282	if (tlb_addr & ~TARGET_PAGE_MASK) {
283	/* IO access */
284	if ((addr & (DATA_SIZE - 1)) != 0)
285	goto do_unaligned_access;
286	retaddr = GETPC();
287	addend = env->iotlb[mmu_idx][index];
288	glue(io_write, SUFFIX)(addend, val, addr, retaddr);
289	} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
290	do_unaligned_access:
291	retaddr = GETPC();
292	#ifdef ALIGNED_ONLY
293	do_unaligned_access(addr, 1, mmu_idx, retaddr);
294	#endif
295	glue(glue(slow_st, SUFFIX), MMUSUFFIX)(addr, val,
296	mmu_idx, retaddr);
297	} else {
298	/* aligned/unaligned access in the same page */
299	#ifdef ALIGNED_ONLY
300	if ((addr & (DATA_SIZE - 1)) != 0) {
301	retaddr = GETPC();
302	do_unaligned_access(addr, 1, mmu_idx, retaddr);
303	}
304	#endif
305	addend = env->tlb_table[mmu_idx][index].addend;
306	glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
307	}
308	} else {
309	/* the page is not in the TLB : fill it */
310	retaddr = GETPC();
311	#ifdef ALIGNED_ONLY
312	if ((addr & (DATA_SIZE - 1)) != 0)
313	do_unaligned_access(addr, 1, mmu_idx, retaddr);
314	#endif
315	tlb_fill(addr, 1, mmu_idx, retaddr);
316	goto redo;
317	}
318	}
319
320	/* handles all unaligned cases */
321	static void glue(glue(slow_st, SUFFIX), MMUSUFFIX)(target_ulong addr,
322	DATA_TYPE val,
323	int mmu_idx,
324	void *retaddr)
325	{
326	target_phys_addr_t addend;
327	target_ulong tlb_addr;
328	int index, i;
329
330	index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
331	redo:
332	tlb_addr = env->tlb_table[mmu_idx][index].addr_write;
333	if ((addr & TARGET_PAGE_MASK) == (tlb_addr & (TARGET_PAGE_MASK \| TLB_INVALID_MASK))) {
334	if (tlb_addr & ~TARGET_PAGE_MASK) {
335	/* IO access */
336	if ((addr & (DATA_SIZE - 1)) != 0)
337	goto do_unaligned_access;
338	addend = env->iotlb[mmu_idx][index];
339	glue(io_write, SUFFIX)(addend, val, addr, retaddr);
340	} else if (((addr & ~TARGET_PAGE_MASK) + DATA_SIZE - 1) >= TARGET_PAGE_SIZE) {
341	do_unaligned_access:
342	/* XXX: not efficient, but simple */
343	/* Note: relies on the fact that tlb_fill() does not remove the
344	* previous page from the TLB cache. */
345	for(i = DATA_SIZE - 1; i >= 0; i--) {
346	#ifdef TARGET_WORDS_BIGENDIAN
347	glue(slow_stb, MMUSUFFIX)(addr + i, val >> (((DATA_SIZE - 1) * 8) - (i * 8)),
348	mmu_idx, retaddr);
349	#else
350	glue(slow_stb, MMUSUFFIX)(addr + i, val >> (i * 8),
351	mmu_idx, retaddr);
352	#endif
353	}
354	} else {
355	/* aligned/unaligned access in the same page */
356	addend = env->tlb_table[mmu_idx][index].addend;
357	glue(glue(st, SUFFIX), _raw)((uint8_t *)(long)(addr+addend), val);
358	}
359	} else {
360	/* the page is not in the TLB : fill it */
361	tlb_fill(addr, 1, mmu_idx, retaddr);
362	goto redo;
363	}
364	}
365
366	#endif /* !defined(SOFTMMU_CODE_ACCESS) */
367
368	#ifdef VBOX
369	#undef DATA_TYPE_PROMOTED
370	#endif
371	#undef READ_ACCESS_TYPE
372	#undef SHIFT
373	#undef DATA_TYPE
374	#undef SUFFIX
375	#undef USUFFIX
376	#undef DATA_SIZE
377	#undef ADDR_READ

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source: vbox/trunk/src/recompiler/softmmu_template.h@ 29485

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