2 * Tiny Code Generator for QEMU
4 * Copyright (c) 2008 Fabrice Bellard
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
28 #include "qemu-common.h"
30 #include "tcg-target.h"
32 /* Default target word size to pointer size. */
33 #ifndef TCG_TARGET_REG_BITS
34 # if UINTPTR_MAX == UINT32_MAX
35 # define TCG_TARGET_REG_BITS 32
36 # elif UINTPTR_MAX == UINT64_MAX
37 # define TCG_TARGET_REG_BITS 64
39 # error Unknown pointer size for tcg target
43 #if TCG_TARGET_REG_BITS == 32
44 typedef int32_t tcg_target_long;
45 typedef uint32_t tcg_target_ulong;
46 #define TCG_PRIlx PRIx32
47 #define TCG_PRIld PRId32
48 #elif TCG_TARGET_REG_BITS == 64
49 typedef int64_t tcg_target_long;
50 typedef uint64_t tcg_target_ulong;
51 #define TCG_PRIlx PRIx64
52 #define TCG_PRIld PRId64
57 #include "tcg-runtime.h"
59 #if TCG_TARGET_NB_REGS <= 32
60 typedef uint32_t TCGRegSet;
61 #elif TCG_TARGET_NB_REGS <= 64
62 typedef uint64_t TCGRegSet;
67 #if TCG_TARGET_REG_BITS == 32
68 /* Turn some undef macros into false macros. */
69 #define TCG_TARGET_HAS_div_i64 0
70 #define TCG_TARGET_HAS_rem_i64 0
71 #define TCG_TARGET_HAS_div2_i64 0
72 #define TCG_TARGET_HAS_rot_i64 0
73 #define TCG_TARGET_HAS_ext8s_i64 0
74 #define TCG_TARGET_HAS_ext16s_i64 0
75 #define TCG_TARGET_HAS_ext32s_i64 0
76 #define TCG_TARGET_HAS_ext8u_i64 0
77 #define TCG_TARGET_HAS_ext16u_i64 0
78 #define TCG_TARGET_HAS_ext32u_i64 0
79 #define TCG_TARGET_HAS_bswap16_i64 0
80 #define TCG_TARGET_HAS_bswap32_i64 0
81 #define TCG_TARGET_HAS_bswap64_i64 0
82 #define TCG_TARGET_HAS_neg_i64 0
83 #define TCG_TARGET_HAS_not_i64 0
84 #define TCG_TARGET_HAS_andc_i64 0
85 #define TCG_TARGET_HAS_orc_i64 0
86 #define TCG_TARGET_HAS_eqv_i64 0
87 #define TCG_TARGET_HAS_nand_i64 0
88 #define TCG_TARGET_HAS_nor_i64 0
89 #define TCG_TARGET_HAS_deposit_i64 0
90 #define TCG_TARGET_HAS_movcond_i64 0
91 #define TCG_TARGET_HAS_add2_i64 0
92 #define TCG_TARGET_HAS_sub2_i64 0
93 #define TCG_TARGET_HAS_mulu2_i64 0
94 #define TCG_TARGET_HAS_muls2_i64 0
95 #define TCG_TARGET_HAS_muluh_i64 0
96 #define TCG_TARGET_HAS_mulsh_i64 0
97 /* Turn some undef macros into true macros. */
98 #define TCG_TARGET_HAS_add2_i32 1
99 #define TCG_TARGET_HAS_sub2_i32 1
100 #define TCG_TARGET_HAS_mulu2_i32 1
103 #ifndef TCG_TARGET_deposit_i32_valid
104 #define TCG_TARGET_deposit_i32_valid(ofs, len) 1
106 #ifndef TCG_TARGET_deposit_i64_valid
107 #define TCG_TARGET_deposit_i64_valid(ofs, len) 1
110 /* Only one of DIV or DIV2 should be defined. */
111 #if defined(TCG_TARGET_HAS_div_i32)
112 #define TCG_TARGET_HAS_div2_i32 0
113 #elif defined(TCG_TARGET_HAS_div2_i32)
114 #define TCG_TARGET_HAS_div_i32 0
115 #define TCG_TARGET_HAS_rem_i32 0
117 #if defined(TCG_TARGET_HAS_div_i64)
118 #define TCG_TARGET_HAS_div2_i64 0
119 #elif defined(TCG_TARGET_HAS_div2_i64)
120 #define TCG_TARGET_HAS_div_i64 0
121 #define TCG_TARGET_HAS_rem_i64 0
124 typedef enum TCGOpcode {
125 #define DEF(name, oargs, iargs, cargs, flags) INDEX_op_ ## name,
131 #define tcg_regset_clear(d) (d) = 0
132 #define tcg_regset_set(d, s) (d) = (s)
133 #define tcg_regset_set32(d, reg, val32) (d) |= (val32) << (reg)
134 #define tcg_regset_set_reg(d, r) (d) |= 1L << (r)
135 #define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (r))
136 #define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1)
137 #define tcg_regset_or(d, a, b) (d) = (a) | (b)
138 #define tcg_regset_and(d, a, b) (d) = (a) & (b)
139 #define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b)
140 #define tcg_regset_not(d, a) (d) = ~(a)
142 typedef struct TCGRelocation {
143 struct TCGRelocation *next;
149 typedef struct TCGLabel {
153 TCGRelocation *first_reloc;
157 typedef struct TCGPool {
158 struct TCGPool *next;
160 uint8_t data[0] __attribute__ ((aligned));
163 #define TCG_POOL_CHUNK_SIZE 32768
165 #define TCG_MAX_LABELS 512
167 #define TCG_MAX_TEMPS 512
169 /* when the size of the arguments of a called function is smaller than
170 this value, they are statically allocated in the TB stack frame */
171 #define TCG_STATIC_CALL_ARGS_SIZE 128
173 typedef enum TCGType {
176 TCG_TYPE_COUNT, /* number of different types */
178 /* An alias for the size of the host register. */
179 #if TCG_TARGET_REG_BITS == 32
180 TCG_TYPE_REG = TCG_TYPE_I32,
182 TCG_TYPE_REG = TCG_TYPE_I64,
185 /* An alias for the size of the native pointer. */
186 #if UINTPTR_MAX == UINT32_MAX
187 TCG_TYPE_PTR = TCG_TYPE_I32,
189 TCG_TYPE_PTR = TCG_TYPE_I64,
192 /* An alias for the size of the target "long", aka register. */
193 #if TARGET_LONG_BITS == 64
194 TCG_TYPE_TL = TCG_TYPE_I64,
196 TCG_TYPE_TL = TCG_TYPE_I32,
200 typedef tcg_target_ulong TCGArg;
202 /* Define a type and accessor macros for variables. Using a struct is
203 nice because it gives some level of type safely. Ideally the compiler
204 be able to see through all this. However in practice this is not true,
205 especially on targets with braindamaged ABIs (e.g. i386).
206 We use plain int by default to avoid this runtime overhead.
207 Users of tcg_gen_* don't need to know about any of this, and should
208 treat TCGv as an opaque type.
209 In addition we do typechecking for different types of variables. TCGv_i32
210 and TCGv_i64 are 32/64-bit variables respectively. TCGv and TCGv_ptr
211 are aliases for target_ulong and host pointer sized values respectively.
214 #if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
215 /* Macros/structures for qemu_ld/st IR code optimization:
216 TCG_MAX_HELPER_LABELS is defined as same as OPC_BUF_SIZE in exec-all.h. */
217 #define TCG_MAX_QEMU_LDST 640
219 typedef struct TCGLabelQemuLdst {
220 int is_ld:1; /* qemu_ld: 1, qemu_st: 0 */
222 int addrlo_reg; /* reg index for low word of guest virtual addr */
223 int addrhi_reg; /* reg index for high word of guest virtual addr */
224 int datalo_reg; /* reg index for low word to be loaded or stored */
225 int datahi_reg; /* reg index for high word to be loaded or stored */
226 int mem_index; /* soft MMU memory index */
227 uint8_t *raddr; /* gen code addr of the next IR of qemu_ld/st IR */
228 uint8_t *label_ptr[2]; /* label pointers to be updated */
232 #ifdef CONFIG_DEBUG_TCG
252 #define MAKE_TCGV_I32(i) __extension__ \
253 ({ TCGv_i32 make_tcgv_tmp = {i}; make_tcgv_tmp;})
254 #define MAKE_TCGV_I64(i) __extension__ \
255 ({ TCGv_i64 make_tcgv_tmp = {i}; make_tcgv_tmp;})
256 #define MAKE_TCGV_PTR(i) __extension__ \
257 ({ TCGv_ptr make_tcgv_tmp = {i}; make_tcgv_tmp; })
258 #define GET_TCGV_I32(t) ((t).i32)
259 #define GET_TCGV_I64(t) ((t).i64)
260 #define GET_TCGV_PTR(t) ((t).iptr)
261 #if TCG_TARGET_REG_BITS == 32
262 #define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t))
263 #define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1)
266 #else /* !DEBUG_TCGV */
268 typedef int TCGv_i32;
269 typedef int TCGv_i64;
270 #if TCG_TARGET_REG_BITS == 32
271 #define TCGv_ptr TCGv_i32
273 #define TCGv_ptr TCGv_i64
275 #define MAKE_TCGV_I32(x) (x)
276 #define MAKE_TCGV_I64(x) (x)
277 #define MAKE_TCGV_PTR(x) (x)
278 #define GET_TCGV_I32(t) (t)
279 #define GET_TCGV_I64(t) (t)
280 #define GET_TCGV_PTR(t) (t)
282 #if TCG_TARGET_REG_BITS == 32
283 #define TCGV_LOW(t) (t)
284 #define TCGV_HIGH(t) ((t) + 1)
287 #endif /* DEBUG_TCGV */
289 #define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b))
290 #define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b))
292 /* Dummy definition to avoid compiler warnings. */
293 #define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1)
294 #define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1)
296 #define TCGV_IS_UNUSED_I32(x) (GET_TCGV_I32(x) == -1)
297 #define TCGV_IS_UNUSED_I64(x) (GET_TCGV_I64(x) == -1)
300 /* Helper does not read globals (either directly or through an exception). It
301 implies TCG_CALL_NO_WRITE_GLOBALS. */
302 #define TCG_CALL_NO_READ_GLOBALS 0x0010
303 /* Helper does not write globals */
304 #define TCG_CALL_NO_WRITE_GLOBALS 0x0020
305 /* Helper can be safely suppressed if the return value is not used. */
306 #define TCG_CALL_NO_SIDE_EFFECTS 0x0040
308 /* convenience version of most used call flags */
309 #define TCG_CALL_NO_RWG TCG_CALL_NO_READ_GLOBALS
310 #define TCG_CALL_NO_WG TCG_CALL_NO_WRITE_GLOBALS
311 #define TCG_CALL_NO_SE TCG_CALL_NO_SIDE_EFFECTS
312 #define TCG_CALL_NO_RWG_SE (TCG_CALL_NO_RWG | TCG_CALL_NO_SE)
313 #define TCG_CALL_NO_WG_SE (TCG_CALL_NO_WG | TCG_CALL_NO_SE)
315 /* used to align parameters */
316 #define TCG_CALL_DUMMY_TCGV MAKE_TCGV_I32(-1)
317 #define TCG_CALL_DUMMY_ARG ((TCGArg)(-1))
319 /* Conditions. Note that these are laid out for easy manipulation by
321 bit 0 is used for inverting;
324 bit 3 is used with bit 0 for swapping signed/unsigned. */
327 TCG_COND_NEVER = 0 | 0 | 0 | 0,
328 TCG_COND_ALWAYS = 0 | 0 | 0 | 1,
329 TCG_COND_EQ = 8 | 0 | 0 | 0,
330 TCG_COND_NE = 8 | 0 | 0 | 1,
332 TCG_COND_LT = 0 | 0 | 2 | 0,
333 TCG_COND_GE = 0 | 0 | 2 | 1,
334 TCG_COND_LE = 8 | 0 | 2 | 0,
335 TCG_COND_GT = 8 | 0 | 2 | 1,
337 TCG_COND_LTU = 0 | 4 | 0 | 0,
338 TCG_COND_GEU = 0 | 4 | 0 | 1,
339 TCG_COND_LEU = 8 | 4 | 0 | 0,
340 TCG_COND_GTU = 8 | 4 | 0 | 1,
343 /* Invert the sense of the comparison. */
344 static inline TCGCond tcg_invert_cond(TCGCond c)
346 return (TCGCond)(c ^ 1);
349 /* Swap the operands in a comparison. */
350 static inline TCGCond tcg_swap_cond(TCGCond c)
352 return c & 6 ? (TCGCond)(c ^ 9) : c;
355 /* Create an "unsigned" version of a "signed" comparison. */
356 static inline TCGCond tcg_unsigned_cond(TCGCond c)
358 return c & 2 ? (TCGCond)(c ^ 6) : c;
361 /* Must a comparison be considered unsigned? */
362 static inline bool is_unsigned_cond(TCGCond c)
367 /* Create a "high" version of a double-word comparison.
368 This removes equality from a LTE or GTE comparison. */
369 static inline TCGCond tcg_high_cond(TCGCond c)
376 return (TCGCond)(c ^ 8);
382 #define TEMP_VAL_DEAD 0
383 #define TEMP_VAL_REG 1
384 #define TEMP_VAL_MEM 2
385 #define TEMP_VAL_CONST 3
387 /* XXX: optimize memory layout */
388 typedef struct TCGTemp {
396 unsigned int fixed_reg:1;
397 unsigned int mem_coherent:1;
398 unsigned int mem_allocated:1;
399 unsigned int temp_local:1; /* If true, the temp is saved across
400 basic blocks. Otherwise, it is not
401 preserved across basic blocks. */
402 unsigned int temp_allocated:1; /* never used for code gen */
403 /* index of next free temp of same base type, -1 if end */
408 typedef struct TCGHelperInfo {
413 typedef struct TCGContext TCGContext;
416 uint8_t *pool_cur, *pool_end;
417 TCGPool *pool_first, *pool_current, *pool_first_large;
422 /* index of free temps, -1 if none */
423 int first_free_temp[TCG_TYPE_COUNT * 2];
425 /* goto_tb support */
428 uint16_t *tb_next_offset;
429 uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */
431 /* liveness analysis */
432 uint16_t *op_dead_args; /* for each operation, each bit tells if the
433 corresponding argument is dead */
434 uint8_t *op_sync_args; /* for each operation, each bit tells if the
435 corresponding output argument needs to be
438 /* tells in which temporary a given register is. It does not take
439 into account fixed registers */
440 int reg_to_temp[TCG_TARGET_NB_REGS];
441 TCGRegSet reserved_regs;
442 intptr_t current_frame_offset;
443 intptr_t frame_start;
448 TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */
450 TCGHelperInfo *helpers;
452 int allocated_helpers;
455 #ifdef CONFIG_PROFILER
459 int64_t op_count; /* total insn count */
460 int op_count_max; /* max insn per TB */
463 int64_t del_op_count;
465 int64_t code_out_len;
470 int64_t restore_count;
471 int64_t restore_time;
474 #ifdef CONFIG_DEBUG_TCG
476 int goto_tb_issue_mask;
479 uint16_t gen_opc_buf[OPC_BUF_SIZE];
480 TCGArg gen_opparam_buf[OPPARAM_BUF_SIZE];
482 uint16_t *gen_opc_ptr;
483 TCGArg *gen_opparam_ptr;
484 target_ulong gen_opc_pc[OPC_BUF_SIZE];
485 uint16_t gen_opc_icount[OPC_BUF_SIZE];
486 uint8_t gen_opc_instr_start[OPC_BUF_SIZE];
488 /* Code generation */
489 int code_gen_max_blocks;
490 uint8_t *code_gen_prologue;
491 uint8_t *code_gen_buffer;
492 size_t code_gen_buffer_size;
493 /* threshold to flush the translated code buffer */
494 size_t code_gen_buffer_max_size;
495 uint8_t *code_gen_ptr;
499 #if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
500 /* labels info for qemu_ld/st IRs
501 The labels help to generate TLB miss case codes at the end of TB */
502 TCGLabelQemuLdst *qemu_ldst_labels;
503 int nb_qemu_ldst_labels;
507 extern TCGContext tcg_ctx;
509 /* pool based memory allocation */
511 void *tcg_malloc_internal(TCGContext *s, int size);
512 void tcg_pool_reset(TCGContext *s);
513 void tcg_pool_delete(TCGContext *s);
515 static inline void *tcg_malloc(int size)
517 TCGContext *s = &tcg_ctx;
518 uint8_t *ptr, *ptr_end;
519 size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1);
521 ptr_end = ptr + size;
522 if (unlikely(ptr_end > s->pool_end)) {
523 return tcg_malloc_internal(&tcg_ctx, size);
525 s->pool_cur = ptr_end;
530 void tcg_context_init(TCGContext *s);
531 void tcg_prologue_init(TCGContext *s);
532 void tcg_func_start(TCGContext *s);
534 int tcg_gen_code(TCGContext *s, uint8_t *gen_code_buf);
535 int tcg_gen_code_search_pc(TCGContext *s, uint8_t *gen_code_buf, long offset);
537 void tcg_set_frame(TCGContext *s, int reg, intptr_t start, intptr_t size);
539 TCGv_i32 tcg_global_reg_new_i32(int reg, const char *name);
540 TCGv_i32 tcg_global_mem_new_i32(int reg, intptr_t offset, const char *name);
541 TCGv_i32 tcg_temp_new_internal_i32(int temp_local);
542 static inline TCGv_i32 tcg_temp_new_i32(void)
544 return tcg_temp_new_internal_i32(0);
546 static inline TCGv_i32 tcg_temp_local_new_i32(void)
548 return tcg_temp_new_internal_i32(1);
550 void tcg_temp_free_i32(TCGv_i32 arg);
551 char *tcg_get_arg_str_i32(TCGContext *s, char *buf, int buf_size, TCGv_i32 arg);
553 TCGv_i64 tcg_global_reg_new_i64(int reg, const char *name);
554 TCGv_i64 tcg_global_mem_new_i64(int reg, intptr_t offset, const char *name);
555 TCGv_i64 tcg_temp_new_internal_i64(int temp_local);
556 static inline TCGv_i64 tcg_temp_new_i64(void)
558 return tcg_temp_new_internal_i64(0);
560 static inline TCGv_i64 tcg_temp_local_new_i64(void)
562 return tcg_temp_new_internal_i64(1);
564 void tcg_temp_free_i64(TCGv_i64 arg);
565 char *tcg_get_arg_str_i64(TCGContext *s, char *buf, int buf_size, TCGv_i64 arg);
567 #if defined(CONFIG_DEBUG_TCG)
568 /* If you call tcg_clear_temp_count() at the start of a section of
569 * code which is not supposed to leak any TCG temporaries, then
570 * calling tcg_check_temp_count() at the end of the section will
571 * return 1 if the section did in fact leak a temporary.
573 void tcg_clear_temp_count(void);
574 int tcg_check_temp_count(void);
576 #define tcg_clear_temp_count() do { } while (0)
577 #define tcg_check_temp_count() 0
580 void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf);
582 #define TCG_CT_ALIAS 0x80
583 #define TCG_CT_IALIAS 0x40
584 #define TCG_CT_REG 0x01
585 #define TCG_CT_CONST 0x02 /* any constant of register size */
587 typedef struct TCGArgConstraint {
595 #define TCG_MAX_OP_ARGS 16
597 /* Bits for TCGOpDef->flags, 8 bits available. */
599 /* Instruction defines the end of a basic block. */
600 TCG_OPF_BB_END = 0x01,
601 /* Instruction clobbers call registers and potentially update globals. */
602 TCG_OPF_CALL_CLOBBER = 0x02,
603 /* Instruction has side effects: it cannot be removed if its outputs
604 are not used, and might trigger exceptions. */
605 TCG_OPF_SIDE_EFFECTS = 0x04,
606 /* Instruction operands are 64-bits (otherwise 32-bits). */
607 TCG_OPF_64BIT = 0x08,
608 /* Instruction is optional and not implemented by the host, or insn
609 is generic and should not be implemened by the host. */
610 TCG_OPF_NOT_PRESENT = 0x10,
613 typedef struct TCGOpDef {
615 uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args;
617 TCGArgConstraint *args_ct;
619 #if defined(CONFIG_DEBUG_TCG)
624 extern TCGOpDef tcg_op_defs[];
625 extern const size_t tcg_op_defs_max;
627 typedef struct TCGTargetOpDef {
629 const char *args_ct_str[TCG_MAX_OP_ARGS];
632 #define tcg_abort() \
634 fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\
638 #ifdef CONFIG_DEBUG_TCG
639 # define tcg_debug_assert(X) do { assert(X); } while (0)
640 #elif QEMU_GNUC_PREREQ(4, 5)
641 # define tcg_debug_assert(X) \
642 do { if (!(X)) { __builtin_unreachable(); } } while (0)
644 # define tcg_debug_assert(X) do { (void)(X); } while (0)
647 void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs);
649 #if UINTPTR_MAX == UINT32_MAX
650 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I32(n))
651 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I32(GET_TCGV_PTR(n))
653 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32((intptr_t)(V)))
654 #define tcg_global_reg_new_ptr(R, N) \
655 TCGV_NAT_TO_PTR(tcg_global_reg_new_i32((R), (N)))
656 #define tcg_global_mem_new_ptr(R, O, N) \
657 TCGV_NAT_TO_PTR(tcg_global_mem_new_i32((R), (O), (N)))
658 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i32())
659 #define tcg_temp_free_ptr(T) tcg_temp_free_i32(TCGV_PTR_TO_NAT(T))
661 #define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I64(n))
662 #define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I64(GET_TCGV_PTR(n))
664 #define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64((intptr_t)(V)))
665 #define tcg_global_reg_new_ptr(R, N) \
666 TCGV_NAT_TO_PTR(tcg_global_reg_new_i64((R), (N)))
667 #define tcg_global_mem_new_ptr(R, O, N) \
668 TCGV_NAT_TO_PTR(tcg_global_mem_new_i64((R), (O), (N)))
669 #define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i64())
670 #define tcg_temp_free_ptr(T) tcg_temp_free_i64(TCGV_PTR_TO_NAT(T))
673 void tcg_gen_callN(TCGContext *s, TCGv_ptr func, unsigned int flags,
674 int sizemask, TCGArg ret, int nargs, TCGArg *args);
676 void tcg_gen_shifti_i64(TCGv_i64 ret, TCGv_i64 arg1,
677 int c, int right, int arith);
679 TCGArg *tcg_optimize(TCGContext *s, uint16_t *tcg_opc_ptr, TCGArg *args,
680 TCGOpDef *tcg_op_def);
682 /* only used for debugging purposes */
683 void tcg_register_helper(void *func, const char *name);
684 const char *tcg_helper_get_name(TCGContext *s, void *func);
685 void tcg_dump_ops(TCGContext *s);
687 void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf);
688 TCGv_i32 tcg_const_i32(int32_t val);
689 TCGv_i64 tcg_const_i64(int64_t val);
690 TCGv_i32 tcg_const_local_i32(int32_t val);
691 TCGv_i64 tcg_const_local_i64(int64_t val);
695 * @env: CPUArchState * for the CPU
696 * @tb_ptr: address of generated code for the TB to execute
698 * Start executing code from a given translation block.
699 * Where translation blocks have been linked, execution
700 * may proceed from the given TB into successive ones.
701 * Control eventually returns only when some action is needed
702 * from the top-level loop: either control must pass to a TB
703 * which has not yet been directly linked, or an asynchronous
704 * event such as an interrupt needs handling.
706 * The return value is a pointer to the next TB to execute
707 * (if known; otherwise zero). This pointer is assumed to be
708 * 4-aligned, and the bottom two bits are used to return further
710 * 0, 1: the link between this TB and the next is via the specified
711 * TB index (0 or 1). That is, we left the TB via (the equivalent
712 * of) "goto_tb <index>". The main loop uses this to determine
713 * how to link the TB just executed to the next.
714 * 2: we are using instruction counting code generation, and we
715 * did not start executing this TB because the instruction counter
716 * would hit zero midway through it. In this case the next-TB pointer
717 * returned is the TB we were about to execute, and the caller must
718 * arrange to execute the remaining count of instructions.
719 * 3: we stopped because the CPU's exit_request flag was set
720 * (usually meaning that there is an interrupt that needs to be
721 * handled). The next-TB pointer returned is the TB we were
722 * about to execute when we noticed the pending exit request.
724 * If the bottom two bits indicate an exit-via-index then the CPU
725 * state is correctly synchronised and ready for execution of the next
726 * TB (and in particular the guest PC is the address to execute next).
727 * Otherwise, we gave up on execution of this TB before it started, and
728 * the caller must fix up the CPU state by calling cpu_pc_from_tb()
729 * with the next-TB pointer we return.
731 * Note that TCG targets may use a different definition of tcg_qemu_tb_exec
732 * to this default (which just calls the prologue.code emitted by
733 * tcg_target_qemu_prologue()).
735 #define TB_EXIT_MASK 3
736 #define TB_EXIT_IDX0 0
737 #define TB_EXIT_IDX1 1
738 #define TB_EXIT_ICOUNT_EXPIRED 2
739 #define TB_EXIT_REQUESTED 3
741 #if !defined(tcg_qemu_tb_exec)
742 # define tcg_qemu_tb_exec(env, tb_ptr) \
743 ((uintptr_t (*)(void *, void *))tcg_ctx.code_gen_prologue)(env, tb_ptr)
746 void tcg_register_jit(void *buf, size_t buf_size);
748 #if defined(CONFIG_QEMU_LDST_OPTIMIZATION) && defined(CONFIG_SOFTMMU)
749 /* Generate TB finalization at the end of block */
750 void tcg_out_tb_finalize(TCGContext *s);
754 * Memory helpers that will be used by TCG generated code.
756 #ifdef CONFIG_SOFTMMU
757 /* Value zero-extended to tcg register size. */
758 tcg_target_ulong helper_ret_ldub_mmu(CPUArchState *env, target_ulong addr,
759 int mmu_idx, uintptr_t retaddr);
760 tcg_target_ulong helper_ret_lduw_mmu(CPUArchState *env, target_ulong addr,
761 int mmu_idx, uintptr_t retaddr);
762 tcg_target_ulong helper_ret_ldul_mmu(CPUArchState *env, target_ulong addr,
763 int mmu_idx, uintptr_t retaddr);
764 uint64_t helper_ret_ldq_mmu(CPUArchState *env, target_ulong addr,
765 int mmu_idx, uintptr_t retaddr);
767 /* Value sign-extended to tcg register size. */
768 tcg_target_ulong helper_ret_ldsb_mmu(CPUArchState *env, target_ulong addr,
769 int mmu_idx, uintptr_t retaddr);
770 tcg_target_ulong helper_ret_ldsw_mmu(CPUArchState *env, target_ulong addr,
771 int mmu_idx, uintptr_t retaddr);
772 tcg_target_ulong helper_ret_ldsl_mmu(CPUArchState *env, target_ulong addr,
773 int mmu_idx, uintptr_t retaddr);
775 void helper_ret_stb_mmu(CPUArchState *env, target_ulong addr, uint8_t val,
776 int mmu_idx, uintptr_t retaddr);
777 void helper_ret_stw_mmu(CPUArchState *env, target_ulong addr, uint16_t val,
778 int mmu_idx, uintptr_t retaddr);
779 void helper_ret_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val,
780 int mmu_idx, uintptr_t retaddr);
781 void helper_ret_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val,
782 int mmu_idx, uintptr_t retaddr);
784 uint8_t helper_ldb_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
785 uint16_t helper_ldw_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
786 uint32_t helper_ldl_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
787 uint64_t helper_ldq_mmu(CPUArchState *env, target_ulong addr, int mmu_idx);
789 void helper_stb_mmu(CPUArchState *env, target_ulong addr,
790 uint8_t val, int mmu_idx);
791 void helper_stw_mmu(CPUArchState *env, target_ulong addr,
792 uint16_t val, int mmu_idx);
793 void helper_stl_mmu(CPUArchState *env, target_ulong addr,
794 uint32_t val, int mmu_idx);
795 void helper_stq_mmu(CPUArchState *env, target_ulong addr,
796 uint64_t val, int mmu_idx);
797 #endif /* CONFIG_SOFTMMU */