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source: vbox/trunk/src/recompiler_new/exec-all.h@ 13462

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1/*
2 * internal execution defines for qemu
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
30/* allow to see translation results - the slowdown should be negligible, so we leave it */
31#ifndef VBOX
32#define DEBUG_DISAS
33#endif
34
35#ifdef VBOX
36# include <VBox/tm.h>
37# include <VBox/pgm.h> /* PGM_DYNAMIC_RAM_ALLOC */
38# ifndef LOG_GROUP
39# define LOG_GROUP LOG_GROUP_REM
40# endif
41# include <VBox/log.h>
42# include "REMInternal.h"
43# include <VBox/vm.h>
44#endif /* VBOX */
45
46/* is_jmp field values */
47#define DISAS_NEXT 0 /* next instruction can be analyzed */
48#define DISAS_JUMP 1 /* only pc was modified dynamically */
49#define DISAS_UPDATE 2 /* cpu state was modified dynamically */
50#define DISAS_TB_JUMP 3 /* only pc was modified statically */
51
52typedef struct TranslationBlock TranslationBlock;
53
54/* XXX: make safe guess about sizes */
55#define MAX_OP_PER_INSTR 64
56/* A Call op needs up to 6 + 2N parameters (N = number of arguments). */
57#define MAX_OPC_PARAM 10
58#define OPC_BUF_SIZE 512
59#define OPC_MAX_SIZE (OPC_BUF_SIZE - MAX_OP_PER_INSTR)
60
61/* Maximum size a TCG op can expand to. This is complicated because a
62 single op may require several host instructions and regirster reloads.
63 For now take a wild guess at 128 bytes, which should allow at least
64 a couple of fixup instructions per argument. */
65#define TCG_MAX_OP_SIZE 128
66
67#define OPPARAM_BUF_SIZE (OPC_BUF_SIZE * MAX_OPC_PARAM)
68
69extern target_ulong gen_opc_pc[OPC_BUF_SIZE];
70extern target_ulong gen_opc_npc[OPC_BUF_SIZE];
71extern uint8_t gen_opc_cc_op[OPC_BUF_SIZE];
72extern uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
73extern uint16_t gen_opc_icount[OPC_BUF_SIZE];
74extern target_ulong gen_opc_jump_pc[2];
75extern uint32_t gen_opc_hflags[OPC_BUF_SIZE];
76
77typedef void (GenOpFunc)(void);
78typedef void (GenOpFunc1)(long);
79typedef void (GenOpFunc2)(long, long);
80typedef void (GenOpFunc3)(long, long, long);
81
82#include "qemu-log.h"
83
84void gen_intermediate_code(CPUState *env, struct TranslationBlock *tb);
85void gen_intermediate_code_pc(CPUState *env, struct TranslationBlock *tb);
86void gen_pc_load(CPUState *env, struct TranslationBlock *tb,
87 unsigned long searched_pc, int pc_pos, void *puc);
88
89unsigned long code_gen_max_block_size(void);
90void cpu_gen_init(void);
91int cpu_gen_code(CPUState *env, struct TranslationBlock *tb,
92 int *gen_code_size_ptr);
93int cpu_restore_state(struct TranslationBlock *tb,
94 CPUState *env, unsigned long searched_pc,
95 void *puc);
96int cpu_restore_state_copy(struct TranslationBlock *tb,
97 CPUState *env, unsigned long searched_pc,
98 void *puc);
99void cpu_resume_from_signal(CPUState *env1, void *puc);
100void cpu_io_recompile(CPUState *env, void *retaddr);
101TranslationBlock *tb_gen_code(CPUState *env,
102 target_ulong pc, target_ulong cs_base, int flags,
103 int cflags);
104void cpu_exec_init(CPUState *env);
105int page_unprotect(target_ulong address, unsigned long pc, void *puc);
106void tb_invalidate_phys_page_range(target_phys_addr_t start, target_phys_addr_t end,
107 int is_cpu_write_access);
108void tb_invalidate_page_range(target_ulong start, target_ulong end);
109void tlb_flush_page(CPUState *env, target_ulong addr);
110void tlb_flush(CPUState *env, int flush_global);
111int tlb_set_page_exec(CPUState *env, target_ulong vaddr,
112 target_phys_addr_t paddr, int prot,
113 int mmu_idx, int is_softmmu);
114#ifndef VBOX
115static inline int tlb_set_page(CPUState *env1, target_ulong vaddr,
116 target_phys_addr_t paddr, int prot,
117 int mmu_idx, int is_softmmu)
118#else
119DECLINLINE(int) tlb_set_page(CPUState *env1, target_ulong vaddr,
120 target_phys_addr_t paddr, int prot,
121 int mmu_idx, int is_softmmu)
122#endif
123{
124 if (prot & PAGE_READ)
125 prot |= PAGE_EXEC;
126 return tlb_set_page_exec(env1, vaddr, paddr, prot, mmu_idx, is_softmmu);
127}
128
129#define CODE_GEN_ALIGN 16 /* must be >= of the size of a icache line */
130
131#define CODE_GEN_PHYS_HASH_BITS 15
132#define CODE_GEN_PHYS_HASH_SIZE (1 << CODE_GEN_PHYS_HASH_BITS)
133
134#define MIN_CODE_GEN_BUFFER_SIZE (1024 * 1024)
135
136/* estimated block size for TB allocation */
137/* XXX: use a per code average code fragment size and modulate it
138 according to the host CPU */
139#if defined(CONFIG_SOFTMMU)
140#define CODE_GEN_AVG_BLOCK_SIZE 128
141#else
142#define CODE_GEN_AVG_BLOCK_SIZE 64
143#endif
144
145#if defined(__powerpc__) || defined(__x86_64__) || defined(__arm__)
146#define USE_DIRECT_JUMP
147#endif
148#if defined(__i386__) && !defined(_WIN32)
149#define USE_DIRECT_JUMP
150#endif
151
152#ifdef VBOX /* bird: not safe in next step because of threading & cpu_interrupt. */
153#undef USE_DIRECT_JUMP
154#endif /* VBOX */
155
156struct TranslationBlock {
157 target_ulong pc; /* simulated PC corresponding to this block (EIP + CS base) */
158 target_ulong cs_base; /* CS base for this block */
159 uint64_t flags; /* flags defining in which context the code was generated */
160 uint16_t size; /* size of target code for this block (1 <=
161 size <= TARGET_PAGE_SIZE) */
162 uint16_t cflags; /* compile flags */
163#define CF_COUNT_MASK 0x7fff
164#define CF_LAST_IO 0x8000 /* Last insn may be an IO access. */
165
166#ifdef VBOX
167#define CF_RAW_MODE 0x0010 /* block was generated in raw mode */
168#endif
169
170 uint8_t *tc_ptr; /* pointer to the translated code */
171 /* next matching tb for physical address. */
172 struct TranslationBlock *phys_hash_next;
173 /* first and second physical page containing code. The lower bit
174 of the pointer tells the index in page_next[] */
175 struct TranslationBlock *page_next[2];
176 target_ulong page_addr[2];
177
178 /* the following data are used to directly call another TB from
179 the code of this one. */
180 uint16_t tb_next_offset[2]; /* offset of original jump target */
181#ifdef USE_DIRECT_JUMP
182 uint16_t tb_jmp_offset[4]; /* offset of jump instruction */
183#else
184# if defined(VBOX) && defined(RT_OS_DARWIN) && defined(RT_ARCH_AMD64)
185# error "First 4GB aren't reachable. jmp dword [tb_next] wont work."
186# endif
187 unsigned long tb_next[2]; /* address of jump generated code */
188#endif
189 /* list of TBs jumping to this one. This is a circular list using
190 the two least significant bits of the pointers to tell what is
191 the next pointer: 0 = jmp_next[0], 1 = jmp_next[1], 2 =
192 jmp_first */
193 struct TranslationBlock *jmp_next[2];
194 struct TranslationBlock *jmp_first;
195 uint32_t icount;
196};
197
198#ifndef VBOX
199static inline unsigned int tb_jmp_cache_hash_page(target_ulong pc)
200#else
201DECLINLINE(unsigned int) tb_jmp_cache_hash_page(target_ulong pc)
202#endif
203{
204 target_ulong tmp;
205 tmp = pc ^ (pc >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS));
206 return (tmp >> TB_JMP_PAGE_BITS) & TB_JMP_PAGE_MASK;
207}
208
209#ifndef VBOX
210static inline unsigned int tb_jmp_cache_hash_func(target_ulong pc)
211#else
212DECLINLINE(unsigned int) tb_jmp_cache_hash_func(target_ulong pc)
213#endif
214
215{
216 target_ulong tmp;
217 tmp = pc ^ (pc >> (TARGET_PAGE_BITS - TB_JMP_PAGE_BITS));
218 return (((tmp >> TB_JMP_PAGE_BITS) & TB_JMP_PAGE_MASK) |
219 (tmp & TB_JMP_ADDR_MASK));
220}
221
222#ifndef VBOX
223static inline unsigned int tb_phys_hash_func(unsigned long pc)
224#else
225DECLINLINE(unsigned int) tb_phys_hash_func(unsigned long pc)
226#endif
227{
228 return pc & (CODE_GEN_PHYS_HASH_SIZE - 1);
229}
230
231TranslationBlock *tb_alloc(target_ulong pc);
232void tb_free(TranslationBlock *tb);
233void tb_flush(CPUState *env);
234void tb_link_phys(TranslationBlock *tb,
235 target_ulong phys_pc, target_ulong phys_page2);
236void tb_phys_invalidate(TranslationBlock *tb, target_ulong page_addr);
237
238extern TranslationBlock *tb_phys_hash[CODE_GEN_PHYS_HASH_SIZE];
239
240extern uint8_t *code_gen_ptr;
241extern int code_gen_max_blocks;
242
243#if defined(USE_DIRECT_JUMP)
244
245#if defined(__powerpc__)
246static inline void tb_set_jmp_target1(unsigned long jmp_addr, unsigned long addr)
247{
248 uint32_t val, *ptr;
249
250 /* patch the branch destination */
251 ptr = (uint32_t *)jmp_addr;
252 val = *ptr;
253 val = (val & ~0x03fffffc) | ((addr - jmp_addr) & 0x03fffffc);
254 *ptr = val;
255 /* flush icache */
256 asm volatile ("dcbst 0,%0" : : "r"(ptr) : "memory");
257 asm volatile ("sync" : : : "memory");
258 asm volatile ("icbi 0,%0" : : "r"(ptr) : "memory");
259 asm volatile ("sync" : : : "memory");
260 asm volatile ("isync" : : : "memory");
261}
262#elif defined(__i386__)
263static inline void tb_set_jmp_target1(unsigned long jmp_addr, unsigned long addr)
264{
265 /* patch the branch destination */
266 *(uint32_t *)jmp_addr = addr - (jmp_addr + 4);
267 /* no need to flush icache explicitely */
268}
269#endif
270
271static inline void tb_set_jmp_target(TranslationBlock *tb,
272 int n, unsigned long addr)
273{
274 unsigned long offset;
275
276 offset = tb->tb_jmp_offset[n];
277 tb_set_jmp_target1((unsigned long)(tb->tc_ptr + offset), addr);
278 offset = tb->tb_jmp_offset[n + 2];
279 if (offset != 0xffff)
280 tb_set_jmp_target1((unsigned long)(tb->tc_ptr + offset), addr);
281}
282
283#else
284
285/* set the jump target */
286#ifndef VBOX
287static inline void tb_set_jmp_target(TranslationBlock *tb,
288 int n, unsigned long addr)
289#else
290DECLINLINE(void) tb_set_jmp_target(TranslationBlock *tb,
291 int n, unsigned long addr)
292#endif
293{
294 tb->tb_next[n] = addr;
295}
296
297#endif
298
299#ifndef VBOX
300static inline void tb_add_jump(TranslationBlock *tb, int n,
301 TranslationBlock *tb_next)
302#else
303DECLINLINE(void) tb_add_jump(TranslationBlock *tb, int n,
304 TranslationBlock *tb_next)
305#endif
306{
307 /* NOTE: this test is only needed for thread safety */
308 if (!tb->jmp_next[n]) {
309 /* patch the native jump address */
310 tb_set_jmp_target(tb, n, (unsigned long)tb_next->tc_ptr);
311
312 /* add in TB jmp circular list */
313 tb->jmp_next[n] = tb_next->jmp_first;
314 tb_next->jmp_first = (TranslationBlock *)((long)(tb) | (n));
315 }
316}
317
318TranslationBlock *tb_find_pc(unsigned long pc_ptr);
319
320#ifndef offsetof
321#define offsetof(type, field) ((size_t) &((type *)0)->field)
322#endif
323
324#if defined(_WIN32)
325#define ASM_DATA_SECTION ".section \".data\"\n"
326#define ASM_PREVIOUS_SECTION ".section .text\n"
327#elif defined(__APPLE__)
328#define ASM_DATA_SECTION ".data\n"
329#define ASM_PREVIOUS_SECTION ".text\n"
330#else
331#define ASM_DATA_SECTION ".section \".data\"\n"
332#define ASM_PREVIOUS_SECTION ".previous\n"
333#endif
334
335#define ASM_OP_LABEL_NAME(n, opname) \
336 ASM_NAME(__op_label) #n "." ASM_NAME(opname)
337
338extern CPUWriteMemoryFunc *io_mem_write[IO_MEM_NB_ENTRIES][4];
339extern CPUReadMemoryFunc *io_mem_read[IO_MEM_NB_ENTRIES][4];
340extern void *io_mem_opaque[IO_MEM_NB_ENTRIES];
341
342#include "qemu-lock.h"
343
344extern spinlock_t tb_lock;
345
346extern int tb_invalidated_flag;
347
348#if !defined(CONFIG_USER_ONLY)
349
350void tlb_fill(target_ulong addr, int is_write, int is_user,
351 void *retaddr);
352
353#include "softmmu_defs.h"
354
355#define ACCESS_TYPE (NB_MMU_MODES + 1)
356#define MEMSUFFIX _code
357#define env cpu_single_env
358
359#define DATA_SIZE 1
360#include "softmmu_header.h"
361
362#define DATA_SIZE 2
363#include "softmmu_header.h"
364
365#define DATA_SIZE 4
366#include "softmmu_header.h"
367
368#define DATA_SIZE 8
369#include "softmmu_header.h"
370
371#undef ACCESS_TYPE
372#undef MEMSUFFIX
373#undef env
374
375#endif
376
377#if defined(CONFIG_USER_ONLY)
378static inline target_ulong get_phys_addr_code(CPUState *env, target_ulong addr)
379{
380 return addr;
381}
382#else
383# ifdef VBOX
384target_ulong remR3PhysGetPhysicalAddressCode(CPUState *env, target_ulong addr, CPUTLBEntry *pTLBEntry);
385# if !defined(REM_PHYS_ADDR_IN_TLB)
386target_ulong remR3HCVirt2GCPhys(void *env, void *addr);
387# endif
388# endif
389/* NOTE: this function can trigger an exception */
390/* NOTE2: the returned address is not exactly the physical address: it
391 is the offset relative to phys_ram_base */
392#ifndef VBOX
393static inline target_ulong get_phys_addr_code(CPUState *env, target_ulong addr)
394#else
395DECLINLINE(target_ulong) get_phys_addr_code(CPUState *env, target_ulong addr)
396#endif
397{
398 int is_user, index, pd;
399
400 index = (addr >> TARGET_PAGE_BITS) & (CPU_TLB_SIZE - 1);
401#if defined(TARGET_I386)
402 is_user = ((env->hflags & HF_CPL_MASK) == 3);
403#elif defined (TARGET_PPC)
404 is_user = msr_pr;
405#elif defined (TARGET_MIPS)
406 is_user = ((env->hflags & MIPS_HFLAG_MODE) == MIPS_HFLAG_UM);
407#elif defined (TARGET_SPARC)
408 is_user = (env->psrs == 0);
409#elif defined (TARGET_ARM)
410 is_user = ((env->uncached_cpsr & CPSR_M) == ARM_CPU_MODE_USR);
411#elif defined (TARGET_SH4)
412 is_user = ((env->sr & SR_MD) == 0);
413#else
414#error unimplemented CPU
415#endif
416#ifndef VBOX
417 if (__builtin_expect(env->tlb_table[is_user][index].addr_code !=
418 (addr & TARGET_PAGE_MASK), 0)) {
419#else
420 if (RT_UNLIKELY(env->tlb_table[is_user][index].addr_code !=
421 (addr & TARGET_PAGE_MASK))) {
422#endif
423 ldub_code(addr);
424 }
425 pd = env->tlb_table[is_user][index].addr_code & ~TARGET_PAGE_MASK;
426 if (pd > IO_MEM_ROM && !(pd & IO_MEM_ROMD)) {
427# ifdef VBOX
428 /* deal with non-MMIO access handlers. */
429 return remR3PhysGetPhysicalAddressCode(env, addr, &env->tlb_table[is_user][index]);
430# else
431 cpu_abort(env, "Trying to execute code outside RAM or ROM at 0x%08lx\n", addr);
432# endif
433 }
434# if defined(VBOX) && defined(REM_PHYS_ADDR_IN_TLB)
435 return addr + env->tlb_table[is_user][index].addend;
436# elif defined(VBOX)
437 return remR3HCVirt2GCPhys(env, (void *)(addr + env->tlb_table[is_user][index].addend));
438# else
439 return addr + env->tlb_table[is_user][index].addend - (unsigned long)phys_ram_base;
440# endif
441}
442
443
444/* Deterministic execution requires that IO only be performed on the last
445 instruction of a TB so that interrupts take effect immediately. */
446#ifndef VBOX
447static inline int can_do_io(CPUState *env)
448#else
449DECLINLINE(int) can_do_io(CPUState *env)
450#endif
451{
452 if (!use_icount)
453 return 1;
454
455 /* If not executing code then assume we are ok. */
456 if (!env->current_tb)
457 return 1;
458
459 return env->can_do_io != 0;
460}
461#endif
462
463
464#ifdef USE_KQEMU
465#define KQEMU_MODIFY_PAGE_MASK (0xff & ~(VGA_DIRTY_FLAG | CODE_DIRTY_FLAG))
466
467int kqemu_init(CPUState *env);
468int kqemu_cpu_exec(CPUState *env);
469void kqemu_flush_page(CPUState *env, target_ulong addr);
470void kqemu_flush(CPUState *env, int global);
471void kqemu_set_notdirty(CPUState *env, ram_addr_t ram_addr);
472void kqemu_modify_page(CPUState *env, ram_addr_t ram_addr);
473void kqemu_cpu_interrupt(CPUState *env);
474void kqemu_record_dump(void);
475
476static inline int kqemu_is_ok(CPUState *env)
477{
478 return(env->kqemu_enabled &&
479 (env->cr[0] & CR0_PE_MASK) &&
480 !(env->hflags & HF_INHIBIT_IRQ_MASK) &&
481 (env->eflags & IF_MASK) &&
482 !(env->eflags & VM_MASK) &&
483 (env->kqemu_enabled == 2 ||
484 ((env->hflags & HF_CPL_MASK) == 3 &&
485 (env->eflags & IOPL_MASK) != IOPL_MASK)));
486}
487
488#endif
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