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Diffstat (limited to 'qemu/tcg/tcg.h')
| -rw-r--r-- | qemu/tcg/tcg.h | 1072 |
1 files changed, 0 insertions, 1072 deletions
diff --git a/qemu/tcg/tcg.h b/qemu/tcg/tcg.h deleted file mode 100644 index 40c8fbe2a..000000000 --- a/qemu/tcg/tcg.h +++ /dev/null @@ -1,1072 +0,0 @@ -/* - * Tiny Code Generator for QEMU - * - * Copyright (c) 2008 Fabrice Bellard - * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN - * THE SOFTWARE. - */ - -#ifndef TCG_H -#define TCG_H - -#include "qemu-common.h" -#include "qemu/bitops.h" -#include "tcg-target.h" - -#define CPU_TEMP_BUF_NLONGS 128 - -/* Default target word size to pointer size. */ -#ifndef TCG_TARGET_REG_BITS -# if UINTPTR_MAX == UINT32_MAX -# define TCG_TARGET_REG_BITS 32 -# elif UINTPTR_MAX == UINT64_MAX -# define TCG_TARGET_REG_BITS 64 -# else -# error Unknown pointer size for tcg target -# endif -#endif - -#if TCG_TARGET_REG_BITS == 32 -typedef int32_t tcg_target_long; -typedef uint32_t tcg_target_ulong; -#define TCG_PRIlx PRIx32 -#define TCG_PRIld PRId32 -#elif TCG_TARGET_REG_BITS == 64 -typedef int64_t tcg_target_long; -typedef uint64_t tcg_target_ulong; -#define TCG_PRIlx PRIx64 -#define TCG_PRIld PRId64 -#else -#error unsupported -#endif - -#if TCG_TARGET_NB_REGS <= 32 -typedef uint32_t TCGRegSet; -#elif TCG_TARGET_NB_REGS <= 64 -typedef uint64_t TCGRegSet; -#else -#error unsupported -#endif - -#if TCG_TARGET_REG_BITS == 32 -/* Turn some undef macros into false macros. */ -#define TCG_TARGET_HAS_extrl_i64_i32 0 -#define TCG_TARGET_HAS_extrh_i64_i32 0 -#define TCG_TARGET_HAS_div_i64 0 -#define TCG_TARGET_HAS_rem_i64 0 -#define TCG_TARGET_HAS_div2_i64 0 -#define TCG_TARGET_HAS_rot_i64 0 -#define TCG_TARGET_HAS_ext8s_i64 0 -#define TCG_TARGET_HAS_ext16s_i64 0 -#define TCG_TARGET_HAS_ext32s_i64 0 -#define TCG_TARGET_HAS_ext8u_i64 0 -#define TCG_TARGET_HAS_ext16u_i64 0 -#define TCG_TARGET_HAS_ext32u_i64 0 -#define TCG_TARGET_HAS_bswap16_i64 0 -#define TCG_TARGET_HAS_bswap32_i64 0 -#define TCG_TARGET_HAS_bswap64_i64 0 -#define TCG_TARGET_HAS_neg_i64 0 -#define TCG_TARGET_HAS_not_i64 0 -#define TCG_TARGET_HAS_andc_i64 0 -#define TCG_TARGET_HAS_orc_i64 0 -#define TCG_TARGET_HAS_eqv_i64 0 -#define TCG_TARGET_HAS_nand_i64 0 -#define TCG_TARGET_HAS_nor_i64 0 -#define TCG_TARGET_HAS_deposit_i64 0 -#define TCG_TARGET_HAS_movcond_i64 0 -#define TCG_TARGET_HAS_add2_i64 0 -#define TCG_TARGET_HAS_sub2_i64 0 -#define TCG_TARGET_HAS_mulu2_i64 0 -#define TCG_TARGET_HAS_muls2_i64 0 -#define TCG_TARGET_HAS_muluh_i64 0 -#define TCG_TARGET_HAS_mulsh_i64 0 -/* Turn some undef macros into true macros. */ -#define TCG_TARGET_HAS_add2_i32 1 -#define TCG_TARGET_HAS_sub2_i32 1 -#endif - -#ifndef TCG_TARGET_deposit_i32_valid -#define TCG_TARGET_deposit_i32_valid(ofs, len) 1 -#endif -#ifndef TCG_TARGET_deposit_i64_valid -#define TCG_TARGET_deposit_i64_valid(ofs, len) 1 -#endif - -/* Only one of DIV or DIV2 should be defined. */ -#if defined(TCG_TARGET_HAS_div_i32) -#define TCG_TARGET_HAS_div2_i32 0 -#elif defined(TCG_TARGET_HAS_div2_i32) -#define TCG_TARGET_HAS_div_i32 0 -#define TCG_TARGET_HAS_rem_i32 0 -#endif -#if defined(TCG_TARGET_HAS_div_i64) -#define TCG_TARGET_HAS_div2_i64 0 -#elif defined(TCG_TARGET_HAS_div2_i64) -#define TCG_TARGET_HAS_div_i64 0 -#define TCG_TARGET_HAS_rem_i64 0 -#endif - -/* For 32-bit targets, some sort of unsigned widening multiply is required. */ -#if TCG_TARGET_REG_BITS == 32 \ - && !(defined(TCG_TARGET_HAS_mulu2_i32) \ - || defined(TCG_TARGET_HAS_muluh_i32)) -# error "Missing unsigned widening multiply" -#endif - -#ifndef TARGET_INSN_START_EXTRA_WORDS -# define TARGET_INSN_START_WORDS 1 -#else -# define TARGET_INSN_START_WORDS (1 + TARGET_INSN_START_EXTRA_WORDS) -#endif - -typedef enum TCGOpcode { -#define DEF(name, oargs, iargs, cargs, flags) INDEX_op_ ## name, -#include "tcg-opc.h" -#undef DEF - NB_OPS, -} TCGOpcode; - -#define tcg_regset_clear(d) (d) = 0 -#define tcg_regset_set(d, s) (d) = (s) -#define tcg_regset_set32(d, reg, val32) (d) |= (val32) << (reg) -#define tcg_regset_set_reg(d, r) (d) |= 1L << (r) -#define tcg_regset_reset_reg(d, r) (d) &= ~(1L << (r)) -#define tcg_regset_test_reg(d, r) (((d) >> (r)) & 1) -#define tcg_regset_or(d, a, b) (d) = (a) | (b) -#define tcg_regset_and(d, a, b) (d) = (a) & (b) -#define tcg_regset_andnot(d, a, b) (d) = (a) & ~(b) -#define tcg_regset_not(d, a) (d) = ~(a) - -#ifndef TCG_TARGET_INSN_UNIT_SIZE -# error "Missing TCG_TARGET_INSN_UNIT_SIZE" -#elif TCG_TARGET_INSN_UNIT_SIZE == 1 -typedef uint8_t tcg_insn_unit; -#elif TCG_TARGET_INSN_UNIT_SIZE == 2 -typedef uint16_t tcg_insn_unit; -#elif TCG_TARGET_INSN_UNIT_SIZE == 4 -typedef uint32_t tcg_insn_unit; -#elif TCG_TARGET_INSN_UNIT_SIZE == 8 -typedef uint64_t tcg_insn_unit; -#else -/* The port better have done this. */ -#endif - - -typedef struct TCGRelocation { - struct TCGRelocation *next; - int type; - tcg_insn_unit *ptr; - intptr_t addend; -} TCGRelocation; - -typedef struct TCGLabel { - unsigned has_value : 1; - unsigned id : 31; - union { - uintptr_t value; - tcg_insn_unit *value_ptr; - TCGRelocation *first_reloc; - } u; -} TCGLabel; - -typedef struct TCGPool { - struct TCGPool *next; - int size; - uint8_t data[0] __attribute__ ((aligned)); -} TCGPool; - -#define TCG_POOL_CHUNK_SIZE 32768 - -#define TCG_MAX_TEMPS 512 -#define TCG_MAX_INSNS 512 - -/* when the size of the arguments of a called function is smaller than - this value, they are statically allocated in the TB stack frame */ -#define TCG_STATIC_CALL_ARGS_SIZE 128 - -typedef enum TCGType { - TCG_TYPE_I32, - TCG_TYPE_I64, - TCG_TYPE_COUNT, /* number of different types */ - - /* An alias for the size of the host register. */ -#if TCG_TARGET_REG_BITS == 32 - TCG_TYPE_REG = TCG_TYPE_I32, -#else - TCG_TYPE_REG = TCG_TYPE_I64, -#endif - - /* An alias for the size of the native pointer. */ -#if UINTPTR_MAX == UINT32_MAX - TCG_TYPE_PTR = TCG_TYPE_I32, -#else - TCG_TYPE_PTR = TCG_TYPE_I64, -#endif - - /* An alias for the size of the target "long", aka register. */ -#if TARGET_LONG_BITS == 64 - TCG_TYPE_TL = TCG_TYPE_I64, -#else - TCG_TYPE_TL = TCG_TYPE_I32, -#endif -} TCGType; - -/* Constants for qemu_ld and qemu_st for the Memory Operation field. */ -typedef enum TCGMemOp { - MO_8 = 0, - MO_16 = 1, - MO_32 = 2, - MO_64 = 3, - MO_SIZE = 3, /* Mask for the above. */ - - MO_SIGN = 4, /* Sign-extended, otherwise zero-extended. */ - - MO_BSWAP = 8, /* Host reverse endian. */ -#ifdef HOST_WORDS_BIGENDIAN - MO_LE = MO_BSWAP, - MO_BE = 0, -#else - MO_LE = 0, - MO_BE = MO_BSWAP, -#endif -#ifdef TARGET_WORDS_BIGENDIAN - MO_TE = MO_BE, -#else - MO_TE = MO_LE, -#endif - - /* MO_UNALN accesses are never checked for alignment. - MO_ALIGN accesses will result in a call to the CPU's - do_unaligned_access hook if the guest address is not aligned. - The default depends on whether the target CPU defines ALIGNED_ONLY. */ - MO_AMASK = 16, -#ifdef ALIGNED_ONLY - MO_ALIGN = 0, - MO_UNALN = MO_AMASK, -#else - MO_ALIGN = MO_AMASK, - MO_UNALN = 0, -#endif - - /* Combinations of the above, for ease of use. */ - MO_UB = MO_8, - MO_UW = MO_16, - MO_UL = MO_32, - MO_SB = MO_SIGN | MO_8, - MO_SW = MO_SIGN | MO_16, - MO_SL = MO_SIGN | MO_32, - MO_Q = MO_64, - - MO_LEUW = MO_LE | MO_UW, - MO_LEUL = MO_LE | MO_UL, - MO_LESW = MO_LE | MO_SW, - MO_LESL = MO_LE | MO_SL, - MO_LEQ = MO_LE | MO_Q, - - MO_BEUW = MO_BE | MO_UW, - MO_BEUL = MO_BE | MO_UL, - MO_BESW = MO_BE | MO_SW, - MO_BESL = MO_BE | MO_SL, - MO_BEQ = MO_BE | MO_Q, - - MO_TEUW = MO_TE | MO_UW, - MO_TEUL = MO_TE | MO_UL, - MO_TESW = MO_TE | MO_SW, - MO_TESL = MO_TE | MO_SL, - MO_TEQ = MO_TE | MO_Q, - - MO_SSIZE = MO_SIZE | MO_SIGN, -} TCGMemOp; - -typedef tcg_target_ulong TCGArg; - -/* Define a type and accessor macros for variables. Using pointer types - is nice because it gives some level of type safely. Converting to and - from intptr_t rather than int reduces the number of sign-extension - instructions that get implied on 64-bit hosts. Users of tcg_gen_* don't - need to know about any of this, and should treat TCGv as an opaque type. - In addition we do typechecking for different types of variables. TCGv_i32 - and TCGv_i64 are 32/64-bit variables respectively. TCGv and TCGv_ptr - are aliases for target_ulong and host pointer sized values respectively. */ - -typedef struct TCGv_i32_d *TCGv_i32; -typedef struct TCGv_i64_d *TCGv_i64; -typedef struct TCGv_ptr_d *TCGv_ptr; -typedef TCGv_ptr TCGv_env; -#if TARGET_LONG_BITS == 32 -#define TCGv TCGv_i32 -#elif TARGET_LONG_BITS == 64 -#define TCGv TCGv_i64 -#else -#error Unhandled TARGET_LONG_BITS value -#endif - -static inline TCGv_i32 QEMU_ARTIFICIAL MAKE_TCGV_I32(intptr_t i) -{ - return (TCGv_i32)i; -} - -static inline TCGv_i64 QEMU_ARTIFICIAL MAKE_TCGV_I64(intptr_t i) -{ - return (TCGv_i64)i; -} - -static inline TCGv_ptr QEMU_ARTIFICIAL MAKE_TCGV_PTR(intptr_t i) -{ - return (TCGv_ptr)i; -} - -static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_I32(TCGv_i32 t) -{ - return (intptr_t)t; -} - -static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_I64(TCGv_i64 t) -{ - return (intptr_t)t; -} - -static inline intptr_t QEMU_ARTIFICIAL GET_TCGV_PTR(TCGv_ptr t) -{ - return (intptr_t)t; -} - -#if TCG_TARGET_REG_BITS == 32 -#define TCGV_LOW(t) MAKE_TCGV_I32(GET_TCGV_I64(t)) -#define TCGV_HIGH(t) MAKE_TCGV_I32(GET_TCGV_I64(t) + 1) -#endif - -#define TCGV_EQUAL_I32(a, b) (GET_TCGV_I32(a) == GET_TCGV_I32(b)) -#define TCGV_EQUAL_I64(a, b) (GET_TCGV_I64(a) == GET_TCGV_I64(b)) -#define TCGV_EQUAL_PTR(a, b) (GET_TCGV_PTR(a) == GET_TCGV_PTR(b)) - -/* Dummy definition to avoid compiler warnings. */ -#define TCGV_UNUSED_I32(x) x = MAKE_TCGV_I32(-1) -#define TCGV_UNUSED_I64(x) x = MAKE_TCGV_I64(-1) -#define TCGV_UNUSED_PTR(x) x = MAKE_TCGV_PTR(-1) - -#define TCGV_IS_UNUSED_I32(x) (GET_TCGV_I32(x) == -1) -#define TCGV_IS_UNUSED_I64(x) (GET_TCGV_I64(x) == -1) -#define TCGV_IS_UNUSED_PTR(x) (GET_TCGV_PTR(x) == -1) - -/* call flags */ -/* Helper does not read globals (either directly or through an exception). It - implies TCG_CALL_NO_WRITE_GLOBALS. */ -#define TCG_CALL_NO_READ_GLOBALS 0x0010 -/* Helper does not write globals */ -#define TCG_CALL_NO_WRITE_GLOBALS 0x0020 -/* Helper can be safely suppressed if the return value is not used. */ -#define TCG_CALL_NO_SIDE_EFFECTS 0x0040 - -/* convenience version of most used call flags */ -#define TCG_CALL_NO_RWG TCG_CALL_NO_READ_GLOBALS -#define TCG_CALL_NO_WG TCG_CALL_NO_WRITE_GLOBALS -#define TCG_CALL_NO_SE TCG_CALL_NO_SIDE_EFFECTS -#define TCG_CALL_NO_RWG_SE (TCG_CALL_NO_RWG | TCG_CALL_NO_SE) -#define TCG_CALL_NO_WG_SE (TCG_CALL_NO_WG | TCG_CALL_NO_SE) - -/* used to align parameters */ -#define TCG_CALL_DUMMY_TCGV MAKE_TCGV_I32(-1) -#define TCG_CALL_DUMMY_ARG ((TCGArg)(-1)) - -/* Conditions. Note that these are laid out for easy manipulation by - the functions below: - bit 0 is used for inverting; - bit 1 is signed, - bit 2 is unsigned, - bit 3 is used with bit 0 for swapping signed/unsigned. */ -typedef enum { - /* non-signed */ - TCG_COND_NEVER = 0 | 0 | 0 | 0, - TCG_COND_ALWAYS = 0 | 0 | 0 | 1, - TCG_COND_EQ = 8 | 0 | 0 | 0, - TCG_COND_NE = 8 | 0 | 0 | 1, - /* signed */ - TCG_COND_LT = 0 | 0 | 2 | 0, - TCG_COND_GE = 0 | 0 | 2 | 1, - TCG_COND_LE = 8 | 0 | 2 | 0, - TCG_COND_GT = 8 | 0 | 2 | 1, - /* unsigned */ - TCG_COND_LTU = 0 | 4 | 0 | 0, - TCG_COND_GEU = 0 | 4 | 0 | 1, - TCG_COND_LEU = 8 | 4 | 0 | 0, - TCG_COND_GTU = 8 | 4 | 0 | 1, -} TCGCond; - -/* Invert the sense of the comparison. */ -static inline TCGCond tcg_invert_cond(TCGCond c) -{ - return (TCGCond)(c ^ 1); -} - -/* Swap the operands in a comparison. */ -static inline TCGCond tcg_swap_cond(TCGCond c) -{ - return c & 6 ? (TCGCond)(c ^ 9) : c; -} - -/* Create an "unsigned" version of a "signed" comparison. */ -static inline TCGCond tcg_unsigned_cond(TCGCond c) -{ - return c & 2 ? (TCGCond)(c ^ 6) : c; -} - -/* Must a comparison be considered unsigned? */ -static inline bool is_unsigned_cond(TCGCond c) -{ - return (c & 4) != 0; -} - -/* Create a "high" version of a double-word comparison. - This removes equality from a LTE or GTE comparison. */ -static inline TCGCond tcg_high_cond(TCGCond c) -{ - switch (c) { - case TCG_COND_GE: - case TCG_COND_LE: - case TCG_COND_GEU: - case TCG_COND_LEU: - return (TCGCond)(c ^ 8); - default: - return c; - } -} - -typedef enum TCGTempVal { - TEMP_VAL_DEAD, - TEMP_VAL_REG, - TEMP_VAL_MEM, - TEMP_VAL_CONST, -} TCGTempVal; - -typedef struct TCGTemp { - TCGReg reg:8; - TCGTempVal val_type:8; - TCGType base_type:8; - TCGType type:8; - unsigned int fixed_reg:1; - unsigned int indirect_reg:1; - unsigned int indirect_base:1; - unsigned int mem_coherent:1; - unsigned int mem_allocated:1; - unsigned int temp_local:1; /* If true, the temp is saved across - basic blocks. Otherwise, it is not - preserved across basic blocks. */ - unsigned int temp_allocated:1; /* never used for code gen */ - - tcg_target_long val; - struct TCGTemp *mem_base; - intptr_t mem_offset; - const char *name; -} TCGTemp; - -typedef struct TCGContext TCGContext; - -typedef struct TCGTempSet { - unsigned long l[BITS_TO_LONGS(TCG_MAX_TEMPS)]; -} TCGTempSet; - -typedef struct TCGOp { - TCGOpcode opc : 8; - - /* The number of out and in parameter for a call. */ - unsigned callo : 2; - unsigned calli : 6; - - /* Index of the arguments for this op, or -1 for zero-operand ops. */ - signed args : 16; - - /* Index of the prex/next op, or -1 for the end of the list. */ - signed prev : 16; - signed next : 16; -} TCGOp; - -QEMU_BUILD_BUG_ON(NB_OPS > 0xff); -QEMU_BUILD_BUG_ON(OPC_BUF_SIZE >= 0x7fff); -QEMU_BUILD_BUG_ON(OPPARAM_BUF_SIZE >= 0x7fff); - -struct TCGContext { - uint8_t *pool_cur, *pool_end; - TCGPool *pool_first, *pool_current, *pool_first_large; - int nb_labels; - int nb_globals; - int nb_temps; - - /* goto_tb support */ - tcg_insn_unit *code_buf; - uintptr_t *tb_next; - uint16_t *tb_next_offset; - uint16_t *tb_jmp_offset; /* != NULL if USE_DIRECT_JUMP */ - - /* liveness analysis */ - uint16_t *op_dead_args; /* for each operation, each bit tells if the - corresponding argument is dead */ - uint8_t *op_sync_args; /* for each operation, each bit tells if the - corresponding output argument needs to be - sync to memory. */ - - TCGRegSet reserved_regs; - intptr_t current_frame_offset; - intptr_t frame_start; - intptr_t frame_end; - TCGTemp *frame_temp; - - tcg_insn_unit *code_ptr; - - GHashTable *helpers; - -#ifdef CONFIG_PROFILER - /* profiling info */ - int64_t tb_count1; - int64_t tb_count; - int64_t op_count; /* total insn count */ - int op_count_max; /* max insn per TB */ - int64_t temp_count; - int temp_count_max; - int64_t del_op_count; - int64_t code_in_len; - int64_t code_out_len; - int64_t search_out_len; - int64_t interm_time; - int64_t code_time; - int64_t la_time; - int64_t opt_time; - int64_t restore_count; - int64_t restore_time; -#endif - -#ifdef CONFIG_DEBUG_TCG - int temps_in_use; - int goto_tb_issue_mask; -#endif - - int gen_first_op_idx; - int gen_last_op_idx; - int gen_next_op_idx; - int gen_next_parm_idx; - - /* Code generation. Note that we specifically do not use tcg_insn_unit - here, because there's too much arithmetic throughout that relies - on addition and subtraction working on bytes. Rely on the GCC - extension that allows arithmetic on void*. */ - int code_gen_max_blocks; - void *code_gen_prologue; - void *code_gen_buffer; - size_t code_gen_buffer_size; - void *code_gen_ptr; - - /* Threshold to flush the translated code buffer. */ - void *code_gen_highwater; - - TBContext tb_ctx; - - /* The TCGBackendData structure is private to tcg-target.inc.c. */ - struct TCGBackendData *be; - - TCGTempSet free_temps[TCG_TYPE_COUNT * 2]; - TCGTemp temps[TCG_MAX_TEMPS]; /* globals first, temps after */ - - /* Tells which temporary holds a given register. - It does not take into account fixed registers */ - TCGTemp *reg_to_temp[TCG_TARGET_NB_REGS]; - - TCGOp gen_op_buf[OPC_BUF_SIZE]; - TCGArg gen_opparam_buf[OPPARAM_BUF_SIZE]; - - uint16_t gen_insn_end_off[TCG_MAX_INSNS]; - target_ulong gen_insn_data[TCG_MAX_INSNS][TARGET_INSN_START_WORDS]; -}; - -extern TCGContext tcg_ctx; - -/* The number of opcodes emitted so far. */ -static inline int tcg_op_buf_count(void) -{ - return tcg_ctx.gen_next_op_idx; -} - -/* Test for whether to terminate the TB for using too many opcodes. */ -static inline bool tcg_op_buf_full(void) -{ - return tcg_op_buf_count() >= OPC_MAX_SIZE; -} - -/* pool based memory allocation */ - -void *tcg_malloc_internal(TCGContext *s, int size); -void tcg_pool_reset(TCGContext *s); -void tcg_pool_delete(TCGContext *s); - -void tb_lock(void); -void tb_unlock(void); -void tb_lock_reset(void); - -static inline void *tcg_malloc(int size) -{ - TCGContext *s = &tcg_ctx; - uint8_t *ptr, *ptr_end; - size = (size + sizeof(long) - 1) & ~(sizeof(long) - 1); - ptr = s->pool_cur; - ptr_end = ptr + size; - if (unlikely(ptr_end > s->pool_end)) { - return tcg_malloc_internal(&tcg_ctx, size); - } else { - s->pool_cur = ptr_end; - return ptr; - } -} - -void tcg_context_init(TCGContext *s); -void tcg_prologue_init(TCGContext *s); -void tcg_func_start(TCGContext *s); - -int tcg_gen_code(TCGContext *s, TranslationBlock *tb); - -void tcg_set_frame(TCGContext *s, TCGReg reg, intptr_t start, intptr_t size); - -int tcg_global_mem_new_internal(TCGType, TCGv_ptr, intptr_t, const char *); - -TCGv_i32 tcg_global_reg_new_i32(TCGReg reg, const char *name); -TCGv_i64 tcg_global_reg_new_i64(TCGReg reg, const char *name); - -TCGv_i32 tcg_temp_new_internal_i32(int temp_local); -TCGv_i64 tcg_temp_new_internal_i64(int temp_local); - -void tcg_temp_free_i32(TCGv_i32 arg); -void tcg_temp_free_i64(TCGv_i64 arg); - -static inline TCGv_i32 tcg_global_mem_new_i32(TCGv_ptr reg, intptr_t offset, - const char *name) -{ - int idx = tcg_global_mem_new_internal(TCG_TYPE_I32, reg, offset, name); - return MAKE_TCGV_I32(idx); -} - -static inline TCGv_i32 tcg_temp_new_i32(void) -{ - return tcg_temp_new_internal_i32(0); -} - -static inline TCGv_i32 tcg_temp_local_new_i32(void) -{ - return tcg_temp_new_internal_i32(1); -} - -static inline TCGv_i64 tcg_global_mem_new_i64(TCGv_ptr reg, intptr_t offset, - const char *name) -{ - int idx = tcg_global_mem_new_internal(TCG_TYPE_I64, reg, offset, name); - return MAKE_TCGV_I64(idx); -} - -static inline TCGv_i64 tcg_temp_new_i64(void) -{ - return tcg_temp_new_internal_i64(0); -} - -static inline TCGv_i64 tcg_temp_local_new_i64(void) -{ - return tcg_temp_new_internal_i64(1); -} - -#if defined(CONFIG_DEBUG_TCG) -/* If you call tcg_clear_temp_count() at the start of a section of - * code which is not supposed to leak any TCG temporaries, then - * calling tcg_check_temp_count() at the end of the section will - * return 1 if the section did in fact leak a temporary. - */ -void tcg_clear_temp_count(void); -int tcg_check_temp_count(void); -#else -#define tcg_clear_temp_count() do { } while (0) -#define tcg_check_temp_count() 0 -#endif - -void tcg_dump_info(FILE *f, fprintf_function cpu_fprintf); -void tcg_dump_op_count(FILE *f, fprintf_function cpu_fprintf); - -#define TCG_CT_ALIAS 0x80 -#define TCG_CT_IALIAS 0x40 -#define TCG_CT_REG 0x01 -#define TCG_CT_CONST 0x02 /* any constant of register size */ - -typedef struct TCGArgConstraint { - uint16_t ct; - uint8_t alias_index; - union { - TCGRegSet regs; - } u; -} TCGArgConstraint; - -#define TCG_MAX_OP_ARGS 16 - -/* Bits for TCGOpDef->flags, 8 bits available. */ -enum { - /* Instruction defines the end of a basic block. */ - TCG_OPF_BB_END = 0x01, - /* Instruction clobbers call registers and potentially update globals. */ - TCG_OPF_CALL_CLOBBER = 0x02, - /* Instruction has side effects: it cannot be removed if its outputs - are not used, and might trigger exceptions. */ - TCG_OPF_SIDE_EFFECTS = 0x04, - /* Instruction operands are 64-bits (otherwise 32-bits). */ - TCG_OPF_64BIT = 0x08, - /* Instruction is optional and not implemented by the host, or insn - is generic and should not be implemened by the host. */ - TCG_OPF_NOT_PRESENT = 0x10, -}; - -typedef struct TCGOpDef { - const char *name; - uint8_t nb_oargs, nb_iargs, nb_cargs, nb_args; - uint8_t flags; - TCGArgConstraint *args_ct; - int *sorted_args; -#if defined(CONFIG_DEBUG_TCG) - int used; -#endif -} TCGOpDef; - -extern TCGOpDef tcg_op_defs[]; -extern const size_t tcg_op_defs_max; - -typedef struct TCGTargetOpDef { - TCGOpcode op; - const char *args_ct_str[TCG_MAX_OP_ARGS]; -} TCGTargetOpDef; - -#define tcg_abort() \ -do {\ - fprintf(stderr, "%s:%d: tcg fatal error\n", __FILE__, __LINE__);\ - abort();\ -} while (0) - -#ifdef CONFIG_DEBUG_TCG -# define tcg_debug_assert(X) do { assert(X); } while (0) -#elif QEMU_GNUC_PREREQ(4, 5) -# define tcg_debug_assert(X) \ - do { if (!(X)) { __builtin_unreachable(); } } while (0) -#else -# define tcg_debug_assert(X) do { (void)(X); } while (0) -#endif - -void tcg_add_target_add_op_defs(const TCGTargetOpDef *tdefs); - -#if UINTPTR_MAX == UINT32_MAX -#define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I32(n)) -#define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I32(GET_TCGV_PTR(n)) - -#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i32((intptr_t)(V))) -#define tcg_global_reg_new_ptr(R, N) \ - TCGV_NAT_TO_PTR(tcg_global_reg_new_i32((R), (N))) -#define tcg_global_mem_new_ptr(R, O, N) \ - TCGV_NAT_TO_PTR(tcg_global_mem_new_i32((R), (O), (N))) -#define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i32()) -#define tcg_temp_free_ptr(T) tcg_temp_free_i32(TCGV_PTR_TO_NAT(T)) -#else -#define TCGV_NAT_TO_PTR(n) MAKE_TCGV_PTR(GET_TCGV_I64(n)) -#define TCGV_PTR_TO_NAT(n) MAKE_TCGV_I64(GET_TCGV_PTR(n)) - -#define tcg_const_ptr(V) TCGV_NAT_TO_PTR(tcg_const_i64((intptr_t)(V))) -#define tcg_global_reg_new_ptr(R, N) \ - TCGV_NAT_TO_PTR(tcg_global_reg_new_i64((R), (N))) -#define tcg_global_mem_new_ptr(R, O, N) \ - TCGV_NAT_TO_PTR(tcg_global_mem_new_i64((R), (O), (N))) -#define tcg_temp_new_ptr() TCGV_NAT_TO_PTR(tcg_temp_new_i64()) -#define tcg_temp_free_ptr(T) tcg_temp_free_i64(TCGV_PTR_TO_NAT(T)) -#endif - -void tcg_gen_callN(TCGContext *s, void *func, - TCGArg ret, int nargs, TCGArg *args); - -void tcg_op_remove(TCGContext *s, TCGOp *op); -void tcg_optimize(TCGContext *s); - -/* only used for debugging purposes */ -void tcg_dump_ops(TCGContext *s); - -void dump_ops(const uint16_t *opc_buf, const TCGArg *opparam_buf); -TCGv_i32 tcg_const_i32(int32_t val); -TCGv_i64 tcg_const_i64(int64_t val); -TCGv_i32 tcg_const_local_i32(int32_t val); -TCGv_i64 tcg_const_local_i64(int64_t val); - -TCGLabel *gen_new_label(void); - -/** - * label_arg - * @l: label - * - * Encode a label for storage in the TCG opcode stream. - */ - -static inline TCGArg label_arg(TCGLabel *l) -{ - return (uintptr_t)l; -} - -/** - * arg_label - * @i: value - * - * The opposite of label_arg. Retrieve a label from the - * encoding of the TCG opcode stream. - */ - -static inline TCGLabel *arg_label(TCGArg i) -{ - return (TCGLabel *)(uintptr_t)i; -} - -/** - * tcg_ptr_byte_diff - * @a, @b: addresses to be differenced - * - * There are many places within the TCG backends where we need a byte - * difference between two pointers. While this can be accomplished - * with local casting, it's easy to get wrong -- especially if one is - * concerned with the signedness of the result. - * - * This version relies on GCC's void pointer arithmetic to get the - * correct result. - */ - -static inline ptrdiff_t tcg_ptr_byte_diff(void *a, void *b) -{ - return a - b; -} - -/** - * tcg_pcrel_diff - * @s: the tcg context - * @target: address of the target - * - * Produce a pc-relative difference, from the current code_ptr - * to the destination address. - */ - -static inline ptrdiff_t tcg_pcrel_diff(TCGContext *s, void *target) -{ - return tcg_ptr_byte_diff(target, s->code_ptr); -} - -/** - * tcg_current_code_size - * @s: the tcg context - * - * Compute the current code size within the translation block. - * This is used to fill in qemu's data structures for goto_tb. - */ - -static inline size_t tcg_current_code_size(TCGContext *s) -{ - return tcg_ptr_byte_diff(s->code_ptr, s->code_buf); -} - -/* Combine the TCGMemOp and mmu_idx parameters into a single value. */ -typedef uint32_t TCGMemOpIdx; - -/** - * make_memop_idx - * @op: memory operation - * @idx: mmu index - * - * Encode these values into a single parameter. - */ -static inline TCGMemOpIdx make_memop_idx(TCGMemOp op, unsigned idx) -{ - tcg_debug_assert(idx <= 15); - return (op << 4) | idx; -} - -/** - * get_memop - * @oi: combined op/idx parameter - * - * Extract the memory operation from the combined value. - */ -static inline TCGMemOp get_memop(TCGMemOpIdx oi) -{ - return oi >> 4; -} - -/** - * get_mmuidx - * @oi: combined op/idx parameter - * - * Extract the mmu index from the combined value. - */ -static inline unsigned get_mmuidx(TCGMemOpIdx oi) -{ - return oi & 15; -} - -/** - * tcg_qemu_tb_exec: - * @env: CPUArchState * for the CPU - * @tb_ptr: address of generated code for the TB to execute - * - * Start executing code from a given translation block. - * Where translation blocks have been linked, execution - * may proceed from the given TB into successive ones. - * Control eventually returns only when some action is needed - * from the top-level loop: either control must pass to a TB - * which has not yet been directly linked, or an asynchronous - * event such as an interrupt needs handling. - * - * The return value is a pointer to the next TB to execute - * (if known; otherwise zero). This pointer is assumed to be - * 4-aligned, and the bottom two bits are used to return further - * information: - * 0, 1: the link between this TB and the next is via the specified - * TB index (0 or 1). That is, we left the TB via (the equivalent - * of) "goto_tb <index>". The main loop uses this to determine - * how to link the TB just executed to the next. - * 2: we are using instruction counting code generation, and we - * did not start executing this TB because the instruction counter - * would hit zero midway through it. In this case the next-TB pointer - * returned is the TB we were about to execute, and the caller must - * arrange to execute the remaining count of instructions. - * 3: we stopped because the CPU's exit_request flag was set - * (usually meaning that there is an interrupt that needs to be - * handled). The next-TB pointer returned is the TB we were - * about to execute when we noticed the pending exit request. - * - * If the bottom two bits indicate an exit-via-index then the CPU - * state is correctly synchronised and ready for execution of the next - * TB (and in particular the guest PC is the address to execute next). - * Otherwise, we gave up on execution of this TB before it started, and - * the caller must fix up the CPU state by calling the CPU's - * synchronize_from_tb() method with the next-TB pointer we return (falling - * back to calling the CPU's set_pc method with tb->pb if no - * synchronize_from_tb() method exists). - * - * Note that TCG targets may use a different definition of tcg_qemu_tb_exec - * to this default (which just calls the prologue.code emitted by - * tcg_target_qemu_prologue()). - */ -#define TB_EXIT_MASK 3 -#define TB_EXIT_IDX0 0 -#define TB_EXIT_IDX1 1 -#define TB_EXIT_ICOUNT_EXPIRED 2 -#define TB_EXIT_REQUESTED 3 - -#ifdef HAVE_TCG_QEMU_TB_EXEC -uintptr_t tcg_qemu_tb_exec(CPUArchState *env, uint8_t *tb_ptr); -#else -# define tcg_qemu_tb_exec(env, tb_ptr) \ - ((uintptr_t (*)(void *, void *))tcg_ctx.code_gen_prologue)(env, tb_ptr) -#endif - -void tcg_register_jit(void *buf, size_t buf_size); - -/* - * Memory helpers that will be used by TCG generated code. - */ -#ifdef CONFIG_SOFTMMU -/* Value zero-extended to tcg register size. */ -tcg_target_ulong helper_ret_ldub_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_le_lduw_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_le_ldul_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint64_t helper_le_ldq_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_be_lduw_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_be_ldul_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint64_t helper_be_ldq_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); - -/* Value sign-extended to tcg register size. */ -tcg_target_ulong helper_ret_ldsb_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_le_ldsw_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_le_ldsl_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_be_ldsw_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -tcg_target_ulong helper_be_ldsl_mmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); - -void helper_ret_stb_mmu(CPUArchState *env, target_ulong addr, uint8_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_le_stw_mmu(CPUArchState *env, target_ulong addr, uint16_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_le_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_le_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_be_stw_mmu(CPUArchState *env, target_ulong addr, uint16_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_be_stl_mmu(CPUArchState *env, target_ulong addr, uint32_t val, - TCGMemOpIdx oi, uintptr_t retaddr); -void helper_be_stq_mmu(CPUArchState *env, target_ulong addr, uint64_t val, - TCGMemOpIdx oi, uintptr_t retaddr); - -uint8_t helper_ret_ldb_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint16_t helper_le_ldw_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint32_t helper_le_ldl_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint64_t helper_le_ldq_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint16_t helper_be_ldw_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint32_t helper_be_ldl_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); -uint64_t helper_be_ldq_cmmu(CPUArchState *env, target_ulong addr, - TCGMemOpIdx oi, uintptr_t retaddr); - -/* Temporary aliases until backends are converted. */ -#ifdef TARGET_WORDS_BIGENDIAN -# define helper_ret_ldsw_mmu helper_be_ldsw_mmu -# define helper_ret_lduw_mmu helper_be_lduw_mmu -# define helper_ret_ldsl_mmu helper_be_ldsl_mmu -# define helper_ret_ldul_mmu helper_be_ldul_mmu -# define helper_ret_ldl_mmu helper_be_ldul_mmu -# define helper_ret_ldq_mmu helper_be_ldq_mmu -# define helper_ret_stw_mmu helper_be_stw_mmu -# define helper_ret_stl_mmu helper_be_stl_mmu -# define helper_ret_stq_mmu helper_be_stq_mmu -# define helper_ret_ldw_cmmu helper_be_ldw_cmmu -# define helper_ret_ldl_cmmu helper_be_ldl_cmmu -# define helper_ret_ldq_cmmu helper_be_ldq_cmmu -#else -# define helper_ret_ldsw_mmu helper_le_ldsw_mmu -# define helper_ret_lduw_mmu helper_le_lduw_mmu -# define helper_ret_ldsl_mmu helper_le_ldsl_mmu -# define helper_ret_ldul_mmu helper_le_ldul_mmu -# define helper_ret_ldl_mmu helper_le_ldul_mmu -# define helper_ret_ldq_mmu helper_le_ldq_mmu -# define helper_ret_stw_mmu helper_le_stw_mmu -# define helper_ret_stl_mmu helper_le_stl_mmu -# define helper_ret_stq_mmu helper_le_stq_mmu -# define helper_ret_ldw_cmmu helper_le_ldw_cmmu -# define helper_ret_ldl_cmmu helper_le_ldl_cmmu -# define helper_ret_ldq_cmmu helper_le_ldq_cmmu -#endif - -#endif /* CONFIG_SOFTMMU */ - -#endif /* TCG_H */ |