/* +----------------------------------------------------------------------+ | Zend JIT | +----------------------------------------------------------------------+ | Copyright (c) The PHP Group | +----------------------------------------------------------------------+ | This source file is subject to version 3.01 of the PHP license, | | that is bundled with this package in the file LICENSE, and is | | available through the world-wide-web at the following url: | | https://www.php.net/license/3_01.txt | | If you did not receive a copy of the PHP license and are unable to | | obtain it through the world-wide-web, please send a note to | | license@php.net so we can mail you a copy immediately. | +----------------------------------------------------------------------+ | Authors: Dmitry Stogov | | Xinchen Hui | | Hao Sun | +----------------------------------------------------------------------+ */ #ifndef ZEND_JIT_INTERNAL_H #define ZEND_JIT_INTERNAL_H #include "Zend/zend_types.h" #include "Zend/zend_compile.h" #include "Zend/zend_constants.h" #include "Zend/Optimizer/zend_func_info.h" #include "Zend/Optimizer/zend_call_graph.h" #include "zend_vm_opcodes.h" /* Address Encoding */ typedef uintptr_t zend_jit_addr; #define IS_CONST_ZVAL 0 #define IS_MEM_ZVAL 1 #define IS_REG 2 /* CPU register or PHP SSA variable number (for IR JIT) */ #define IS_REF_ZVAL 3 /* IR reference */ #define _ZEND_ADDR_MODE_MASK 0x3 #define _ZEND_ADDR_REG_SHIFT 2 #define _ZEND_ADDR_REG_MASK 0x3f /* no more than 64 registers */ #define _ZEND_ADDR_OFFSET_SHIFT 8 #define ZEND_ADDR_CONST_ZVAL(zv) \ (((zend_jit_addr)(uintptr_t)(zv)) | IS_CONST_ZVAL) #define ZEND_ADDR_MEM_ZVAL(reg, offset) \ ((((zend_jit_addr)(uintptr_t)(offset)) << _ZEND_ADDR_OFFSET_SHIFT) | \ (((zend_jit_addr)(uintptr_t)(reg)) << _ZEND_ADDR_REG_SHIFT) | \ IS_MEM_ZVAL) #define ZEND_ADDR_REG(reg) \ ((((zend_jit_addr)(uintptr_t)(reg)) << _ZEND_ADDR_REG_SHIFT) | \ IS_REG) #define Z_MODE(addr) (((addr) & _ZEND_ADDR_MODE_MASK)) #define Z_ZV(addr) ((zval*)(addr)) #define Z_OFFSET(addr) ((uint32_t)((addr)>>_ZEND_ADDR_OFFSET_SHIFT)) #define Z_REG(addr) ((zend_reg)(((addr)>>_ZEND_ADDR_REG_SHIFT) & _ZEND_ADDR_REG_MASK)) #define ZEND_ADDR_REF_ZVAL(ref) \ ((((zend_jit_addr)(uintptr_t)(ref)) << _ZEND_ADDR_REG_SHIFT) | \ IS_REF_ZVAL) #define Z_SSA_VAR(addr) ((addr)>>_ZEND_ADDR_REG_SHIFT) #define Z_IR_REF(addr) ((addr)>>_ZEND_ADDR_REG_SHIFT) #define Z_STORE(addr) \ ((jit->ra && jit->ra[Z_SSA_VAR(addr)].ref) ? \ (jit->ra[Z_SSA_VAR(addr)].flags & ZREG_STORE) : \ 0) #define Z_LOAD(addr) \ ((jit->ra && jit->ra[Z_SSA_VAR(addr)].ref) ? \ (jit->ra[Z_SSA_VAR(addr)].flags & ZREG_LOAD) : \ 0) #if ZEND_USE_ABS_CONST_ADDR # define OP_ADDR(opline, type, op) \ (((opline)->type == IS_CONST) ? \ ZEND_ADDR_CONST_ZVAL((opline)->op.zv) : \ ZEND_ADDR_MEM_ZVAL(ZREG_FP, (opline)->op.var)) #else # define OP_ADDR(opline, type, op) \ (((opline)->type == IS_CONST) ? \ ZEND_ADDR_CONST_ZVAL(RT_CONSTANT(opline, (opline)->op)) : \ ZEND_ADDR_MEM_ZVAL(ZREG_FP, (opline)->op.var)) #endif #define OP_REG_ADDR(opline, ssa_op, type, op, _ssa_op) \ ((ctx.ra && (ssa_op)->_ssa_op >= 0 && ctx.ra[(ssa_op)->_ssa_op].ref) ? \ ZEND_ADDR_REG((ssa_op)->_ssa_op) : \ OP_ADDR(opline, type, op)) #define OP1_ADDR() \ OP_ADDR(opline, op1_type, op1) #define OP2_ADDR() \ OP_ADDR(opline, op2_type, op2) #define RES_ADDR() \ OP_ADDR(opline, result_type, result) #define OP1_DATA_ADDR() \ OP_ADDR(opline + 1, op1_type, op1) #define OP1_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, op1_type, op1, op1_use) #define OP2_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, op2_type, op2, op2_use) #define RES_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, result_type, result, result_def) #define OP1_DATA_REG_ADDR() \ OP_REG_ADDR(opline + 1, ssa_op + 1, op1_type, op1, op1_use) #define OP1_DEF_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, op1_type, op1, op1_def) #define OP2_DEF_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, op2_type, op2, op2_def) #define RES_USE_REG_ADDR() \ OP_REG_ADDR(opline, ssa_op, result_type, result, result_use) #define OP1_DATA_DEF_REG_ADDR() \ OP_REG_ADDR(opline + 1, ssa_op + 1, op1_type, op1, op1_def) static zend_always_inline bool zend_jit_same_addr(zend_jit_addr addr1, zend_jit_addr addr2) { if (addr1 == addr2) { return 1; } else if (Z_MODE(addr1) == IS_REG && Z_MODE(addr2) == IS_REG) { return Z_SSA_VAR(addr1) == Z_SSA_VAR(addr2); } else if (Z_MODE(addr1) == IS_REF_ZVAL && Z_MODE(addr2) == IS_REF_ZVAL) { return Z_IR_REF(addr1) == Z_IR_REF(addr2); } return 0; } typedef struct _zend_jit_op_array_extension { zend_func_info func_info; const zend_op_array *op_array; zend_vm_opcode_handler_t orig_handler; } zend_jit_op_array_extension; /* Profiler */ extern zend_ulong zend_jit_profile_counter; extern int zend_jit_profile_counter_rid; #define ZEND_COUNTER_INFO(op_array) \ ZEND_OP_ARRAY_EXTENSION(op_array, zend_jit_profile_counter_rid) /* Hot Counters */ #define ZEND_HOT_COUNTERS_COUNT 128 extern int16_t zend_jit_hot_counters[ZEND_HOT_COUNTERS_COUNT]; static zend_always_inline zend_long zend_jit_hash(const void *ptr) { uintptr_t x; x = (uintptr_t)ptr >> 3; #if SIZEOF_SIZE_T == 4 x = ((x >> 16) ^ x) * 0x45d9f3b; x = ((x >> 16) ^ x) * 0x45d9f3b; x = (x >> 16) ^ x; #elif SIZEOF_SIZE_T == 8 x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9; x = (x ^ (x >> 27)) * 0x94d049bb133111eb; x = x ^ (x >> 31); #endif return x; } void ZEND_FASTCALL zend_jit_hot_func(zend_execute_data *execute_data, const zend_op *opline); typedef struct _zend_jit_op_array_hot_extension { zend_func_info func_info; const zend_op_array *op_array; int16_t *counter; zend_vm_opcode_handler_t orig_handlers[1]; } zend_jit_op_array_hot_extension; #define zend_jit_op_array_hash(op_array) \ zend_jit_hash((op_array)->opcodes) extern const zend_op *zend_jit_halt_op; #ifdef HAVE_GCC_GLOBAL_REGS # define EXECUTE_DATA_D void # define EXECUTE_DATA_C # define EXECUTE_DATA_DC # define EXECUTE_DATA_CC # define OPLINE_D void # define OPLINE_C # define OPLINE_DC # define OPLINE_CC # define ZEND_OPCODE_HANDLER_RET void # define ZEND_OPCODE_HANDLER_ARGS EXECUTE_DATA_D # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU # define ZEND_OPCODE_HANDLER_ARGS_EX # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_EX # define ZEND_OPCODE_RETURN() return # define ZEND_OPCODE_TAIL_CALL(handler) do { \ handler(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU); \ return; \ } while(0) # define ZEND_VM_ENTER_BIT 0 #else # define EXECUTE_DATA_D zend_execute_data* execute_data # define EXECUTE_DATA_C execute_data # define EXECUTE_DATA_DC , EXECUTE_DATA_D # define EXECUTE_DATA_CC , EXECUTE_DATA_C # define OPLINE_D const zend_op* opline # define OPLINE_C opline # define OPLINE_DC , OPLINE_D # define OPLINE_CC , OPLINE_C # define ZEND_OPCODE_HANDLER_RET const zend_op * # if ZEND_VM_KIND == ZEND_VM_KIND_TAILCALL # define ZEND_OPCODE_TAIL_CALL(handler) do { \ ZEND_MUSTTAIL return (handler)(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU); \ } while(0) # define ZEND_OPCODE_RETURN() ZEND_OPCODE_TAIL_CALL((zend_vm_opcode_handler_t)opline->handler) # else # define ZEND_OPCODE_TAIL_CALL(handler) do { \ return handler(ZEND_OPCODE_HANDLER_ARGS_PASSTHRU); \ } while(0) # define ZEND_OPCODE_RETURN() return opline # endif # define ZEND_OPCODE_HANDLER_ARGS EXECUTE_DATA_D OPLINE_DC # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU EXECUTE_DATA_C OPLINE_CC # define ZEND_OPCODE_HANDLER_ARGS_EX EXECUTE_DATA_D OPLINE_DC, # define ZEND_OPCODE_HANDLER_ARGS_PASSTHRU_EX EXECUTE_DATA_C OPLINE_CC, # define ZEND_VM_ENTER_BIT 1ULL #endif /* VM helpers */ ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_jit_leave_nested_func_helper(ZEND_OPCODE_HANDLER_ARGS_EX uint32_t call_info); ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_jit_leave_top_func_helper(ZEND_OPCODE_HANDLER_ARGS_EX uint32_t call_info); ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_jit_leave_func_helper(ZEND_OPCODE_HANDLER_ARGS); #if ZEND_VM_KIND == ZEND_VM_KIND_TAILCALL ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_leave_func_helper_tailcall(ZEND_OPCODE_HANDLER_ARGS); #endif #if ZEND_VM_KIND == ZEND_VM_KIND_CALL || ZEND_VM_KIND == ZEND_VM_KIND_TAILCALL ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_profile_helper(ZEND_OPCODE_HANDLER_ARGS); ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_func_counter_helper(ZEND_OPCODE_HANDLER_ARGS); ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_loop_counter_helper(ZEND_OPCODE_HANDLER_ARGS); #endif ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_jit_copy_extra_args_helper(ZEND_OPCODE_HANDLER_ARGS); ZEND_OPCODE_HANDLER_RET ZEND_FASTCALL zend_jit_copy_extra_args_helper_no_skip_recv(ZEND_OPCODE_HANDLER_ARGS); bool ZEND_FASTCALL zend_jit_deprecated_helper(OPLINE_D); bool ZEND_FASTCALL zend_jit_nodiscard_helper(OPLINE_D); bool ZEND_FASTCALL zend_jit_deprecated_nodiscard_helper(OPLINE_D); void ZEND_FASTCALL zend_jit_undefined_long_key(EXECUTE_DATA_D); void ZEND_FASTCALL zend_jit_undefined_long_key_ex(zend_long key EXECUTE_DATA_DC); void ZEND_FASTCALL zend_jit_undefined_string_key(EXECUTE_DATA_D); zend_constant* ZEND_FASTCALL zend_jit_get_constant(const zval *key, uint32_t flags); zend_constant* ZEND_FASTCALL zend_jit_check_constant(const zval *key); /* Tracer */ #define zend_jit_opline_hash(opline) \ zend_jit_hash(opline) #define ZEND_JIT_TRACE_STOP(_) \ _(LOOP, "loop") \ _(RECURSIVE_CALL, "recursive call") \ _(RECURSIVE_RET, "recursive return") \ _(RETURN, "return") \ _(LINK, "link to another trace") \ _(INTERPRETER, "exit to VM interpreter") \ _(TRAMPOLINE, "trampoline call") \ _(PROP_HOOK_CALL, "property hook call") \ _(BAD_FUNC, "bad function call") \ /* compilation and linking successful */ \ _(COMPILED, "compiled") \ _(ALREADY_DONE, "already prcessed") \ /* failures */ \ _(ERROR, "error") /* not used */ \ _(NOT_SUPPORTED, "not supported instructions") \ _(EXCEPTION, "exception") \ _(TOO_LONG, "trace too long") \ _(TOO_DEEP, "trace too deep") \ _(TOO_DEEP_RET, "trace too deep return") \ _(DEEP_RECURSION, "deep recursion") \ _(LOOP_UNROLL, "loop unroll limit reached") \ _(LOOP_EXIT, "exit from loop") \ _(RECURSION_EXIT, "return from recursive function") \ _(BLACK_LIST, "trace blacklisted") \ _(INNER_LOOP, "inner loop") /* trace it */ \ _(COMPILED_LOOP, "compiled loop") \ _(COMPILER_ERROR, "JIT compilation error") \ /* no recoverable error (blacklist immediately) */ \ _(NO_SHM, "insufficient shared memory") \ _(TOO_MANY_TRACES, "too many traces") \ _(TOO_MANY_CHILDREN, "too many side traces") \ _(TOO_MANY_EXITS, "too many side exits") \ #define ZEND_JIT_TRACE_STOP_NAME(name, description) \ ZEND_JIT_TRACE_STOP_ ## name, typedef enum _zend_jit_trace_stop { ZEND_JIT_TRACE_STOP(ZEND_JIT_TRACE_STOP_NAME) ZEND_JIT_TRACE_HALT = 0x40 } zend_jit_trace_stop; #define ZEND_JIT_TRACE_STOP_OK(ret) \ (ret < ZEND_JIT_TRACE_STOP_COMPILED) #define ZEND_JIT_TRACE_STOP_DONE(ret) \ (ret < ZEND_JIT_TRACE_STOP_ERROR) #define ZEND_JIT_TRACE_STOP_REPEAT(ret) \ (ret == ZEND_JIT_TRACE_STOP_INNER_LOOP) #define ZEND_JIT_TRACE_STOP_MAY_RECOVER(ret) \ (ret <= ZEND_JIT_TRACE_STOP_COMPILER_ERROR) #define ZEND_JIT_TRACE_START_MASK 0xf #define ZEND_JIT_TRACE_START_LOOP (1<<0) #define ZEND_JIT_TRACE_START_ENTER (1<<1) #define ZEND_JIT_TRACE_START_RETURN (1<<2) #define ZEND_JIT_TRACE_START_SIDE (1<<3) /* used for side traces */ #define ZEND_JIT_TRACE_JITED (1<<4) #define ZEND_JIT_TRACE_BLACKLISTED (1<<5) #define ZEND_JIT_TRACE_UNSUPPORTED (1<<6) #define ZEND_JIT_TRACE_SUPPORTED 0 #define ZEND_JIT_EXIT_JITED (1<<0) #define ZEND_JIT_EXIT_BLACKLISTED (1<<1) #define ZEND_JIT_EXIT_TO_VM (1<<2) /* exit to VM without attempt to create a side trace */ #define ZEND_JIT_EXIT_RESTORE_CALL (1<<3) /* deoptimizer should restore EX(call) chain */ #define ZEND_JIT_EXIT_POLYMORPHISM (1<<4) /* exit because of polymorphic call */ #define ZEND_JIT_EXIT_FREE_OP1 (1<<5) #define ZEND_JIT_EXIT_FREE_OP2 (1<<6) #define ZEND_JIT_EXIT_PACKED_GUARD (1<<7) #define ZEND_JIT_EXIT_CLOSURE_CALL (1<<8) /* exit because of polymorphic INIT_DYNAMIC_CALL call */ #define ZEND_JIT_EXIT_METHOD_CALL (1<<9) /* exit because of polymorphic INIT_METHOD_CALL call */ #define ZEND_JIT_EXIT_INVALIDATE (1<<10) /* invalidate current trace */ #define ZEND_JIT_EXIT_CHECK_EXCEPTION (1<<11) #define ZEND_JIT_EXIT_FIXED (1U<<31) /* the exit_info can't be changed by zend_jit_snapshot_handler() */ typedef union _zend_op_trace_info { zend_op dummy; /* the size of this structure must be the same as zend_op */ struct { zend_vm_opcode_handler_t orig_handler; zend_vm_opcode_handler_func_t call_handler; int16_t *counter; uint8_t trace_flags; }; } zend_op_trace_info; typedef struct _zend_jit_op_array_trace_extension { zend_func_info func_info; const zend_op_array *op_array; size_t offset; /* offset from "zend_op" to corresponding "op_info" */ zend_op_trace_info trace_info[1]; } zend_jit_op_array_trace_extension; #define ZEND_OP_TRACE_INFO(opline, offset) \ ((zend_op_trace_info*)(((char*)opline) + offset)) /* Recorder */ typedef enum _zend_jit_trace_op { ZEND_JIT_TRACE_VM, ZEND_JIT_TRACE_OP1_TYPE, ZEND_JIT_TRACE_OP2_TYPE, ZEND_JIT_TRACE_VAL_INFO, ZEND_JIT_TRACE_INIT_CALL, ZEND_JIT_TRACE_DO_ICALL, ZEND_JIT_TRACE_ENTER, ZEND_JIT_TRACE_BACK, ZEND_JIT_TRACE_END, ZEND_JIT_TRACE_START, } zend_jit_trace_op; #define IS_UNKNOWN 255 /* may be used for zend_jit_trace_rec.op?_type */ #define IS_TRACE_PACKED (1<<4) #define IS_TRACE_REFERENCE (1<<5) #define IS_TRACE_INDIRECT (1<<6) #define IS_TRACE_TYPE_MASK 0xf #define ZEND_JIT_TRACE_FAKE_INIT_CALL 0x00000100 #define ZEND_JIT_TRACE_RETURN_VALUE_USED 0x00000100 #define ZEND_JIT_TRACE_MAX_SSA_VAR 0x7ffffe #define ZEND_JIT_TRACE_SSA_VAR_SHIFT 9 #define ZEND_JIT_TRACE_FAKE_LEVEL_MASK 0xffff0000 #define ZEND_JIT_TRACE_FAKE_LEVEL_SHIFT 16 #define ZEND_JIT_TRACE_FAKE_LEVEL(info) \ (((info) & ZEND_JIT_TRACE_FAKE_LEVEL_MASK) >> ZEND_JIT_TRACE_FAKE_LEVEL_SHIFT) #define ZEND_JIT_TRACE_FAKE_INFO(level) \ (((level) << ZEND_JIT_TRACE_FAKE_LEVEL_SHIFT) | ZEND_JIT_TRACE_FAKE_INIT_CALL) #define ZEND_JIT_TRACE_NUM_ARGS_INFO(count) \ ((count) << ZEND_JIT_TRACE_FAKE_LEVEL_SHIFT) #define ZEND_JIT_TRACE_NUM_ARGS(info) \ (((info) & ZEND_JIT_TRACE_FAKE_LEVEL_MASK) >> ZEND_JIT_TRACE_FAKE_LEVEL_SHIFT) #define ZEND_JIT_TRACE_SET_FIRST_SSA_VAR(_info, var) do { \ _info |= (var << ZEND_JIT_TRACE_SSA_VAR_SHIFT); \ } while (0) #define ZEND_JIT_TRACE_GET_FIRST_SSA_VAR(_info) \ (_info >> ZEND_JIT_TRACE_SSA_VAR_SHIFT) struct _zend_jit_trace_rec { union { struct { ZEND_ENDIAN_LOHI( uint8_t op, /* zend_jit_trace_op */ union { struct { uint8_t op1_type;/* recorded zval op1_type for ZEND_JIT_TRACE_VM */ uint8_t op2_type;/* recorded zval op2_type for ZEND_JIT_TRACE_VM */ uint8_t op3_type;/* recorded zval for op_data.op1_type for ZEND_JIT_TRACE_VM */ }; struct { uint8_t start; /* ZEND_JIT_TRACE_START_MASK for ZEND_JIT_TRACE_START/END */ uint8_t stop; /* zend_jit_trace_stop for ZEND_JIT_TRACE_START/END */ uint8_t level; /* recursive return level for ZEND_JIT_TRACE_START */ }; }) }; uint32_t last; uint32_t info; /* "first_ssa_var" for ZEND_JIT_TRACE_ENTER and ZEND_JIT_TRACE_BACK, * "return_value_used" for ZEND_JIT_TRACE_ENTER, * "fake" for ZEND_JIT_TRACE_INIT_CALL */ }; union { const void *ptr; const zend_function *func; const zend_op_array *op_array; const zend_op *opline; const zend_class_entry *ce; }; }; #define ZEND_JIT_TRACE_START_REC_SIZE 2 typedef struct _zend_jit_ref_snapshot { union { int32_t ref; /* While generating code: The ir_ref to snapshot */ int32_t offset; /* After compilation / during deopt: C stack offset if 'reg' is spilled */ }; int8_t reg; /* Set after compilation by zend_jit_snapshot_handler() */ } zend_jit_ref_snapshot; typedef struct _zend_jit_trace_exit_info { const zend_op *opline; /* opline where VM should continue execution */ const zend_op_array *op_array; uint32_t flags; /* set of ZEND_JIT_EXIT_... */ uint32_t stack_size; uint32_t stack_offset; zend_jit_ref_snapshot poly_func; zend_jit_ref_snapshot poly_this; } zend_jit_trace_exit_info; typedef struct _zend_jit_trace_stack { union { uint32_t info; struct { uint8_t type; /* variable type (for type inference) */ uint8_t mem_type; /* stack slot type (for eliminate dead type store) */ int8_t reg; uint8_t flags; }; }; int32_t ref; } zend_jit_trace_stack; #define STACK_VAR(_stack, _slot) \ ((int32_t*)(_stack))[_slot] #define SET_STACK_VAR(_stack, _slot, _ssa_var) do { \ ((int32_t*)(_stack))[_slot] = _ssa_var; \ } while (0) #define CLEAR_STACK_REF(_stack, _slot) do { \ (_stack)[_slot].ref = IR_UNUSED; \ (_stack)[_slot].flags = 0; \ } while (0) #define STACK_REF(_stack, _slot) \ (_stack)[_slot].ref #define SET_STACK_REF(_stack, _slot, _ref) do { \ (_stack)[_slot].ref = (_ref); \ (_stack)[_slot].flags = 0; \ } while (0) #define SET_STACK_REF_EX(_stack, _slot, _ref, _flags) do { \ (_stack)[_slot].ref = (_ref); \ (_stack)[_slot].flags = _flags; \ } while (0) #define STACK_INFO(_stack, _slot) \ (_stack)[_slot].info #define STACK_TYPE(_stack, _slot) \ (_stack)[_slot].type #define STACK_MEM_TYPE(_stack, _slot) \ (_stack)[_slot].mem_type #define STACK_REG(_stack, _slot) \ (_stack)[_slot].reg #define STACK_FLAGS(_stack, _slot) \ (_stack)[_slot].flags #define SET_STACK_INFO(_stack, _slot, _info) do { \ (_stack)[_slot].info = _info; \ } while (0) #define SET_STACK_TYPE(_stack, _slot, _type, _set_mem_type) do { \ uint8_t __type = (_type); \ (_stack)[_slot].type = __type; \ if (_set_mem_type) { \ (_stack)[_slot].mem_type = __type; \ } \ (_stack)[_slot].reg = ZREG_NONE; \ (_stack)[_slot].flags = 0; \ CLEAR_STACK_REF(_stack, _slot); \ } while (0) #define SET_STACK_REG(_stack, _slot, _reg) do { \ (_stack)[_slot].reg = _reg; \ (_stack)[_slot].flags = 0; \ } while (0) #define SET_STACK_REG_EX(_stack, _slot, _reg, _flags) do { \ (_stack)[_slot].reg = _reg; \ (_stack)[_slot].flags = _flags; \ } while (0) #define RESET_STACK_MEM_TYPE(_stack, _slot) do { \ (_stack)[_slot].mem_type = IS_UNKNOWN; \ } while (0) /* trace info flags */ #define ZEND_JIT_TRACE_CHECK_INTERRUPT (1<<0) #define ZEND_JIT_TRACE_LOOP (1<<1) #define ZEND_JIT_TRACE_USES_INITIAL_IP (1<<2) typedef union _zend_jit_exit_const { int64_t i; double d; } zend_jit_exit_const; typedef struct _zend_jit_trace_info { uint32_t id; /* trace id */ uint32_t root; /* root trace id or self id for root traces */ uint32_t parent; /* parent trace id or 0 for root traces */ uint32_t link; /* link trace id or self id for loop) */ uint32_t exit_count; /* number of side exits */ uint32_t child_count; /* number of side traces for root traces */ uint32_t code_size; /* size of native code */ uint32_t exit_counters; /* offset in exit counters array */ uint32_t stack_map_size; uint32_t flags; /* See ZEND_JIT_TRACE_... defines above */ uint32_t polymorphism; /* Counter of polymorphic calls */ uint32_t jmp_table_size;/* number of jmp_table slots */ const zend_op_array *op_array; /* function */ const zend_op *opline; /* first opline */ const void *code_start; /* address of native code */ zend_jit_trace_exit_info *exit_info; /* info about side exits */ zend_jit_trace_stack *stack_map; //uint32_t loop_offset; uint32_t consts_count; /* number of side exits */ zend_jit_exit_const *constants; } zend_jit_trace_info; struct _zend_jit_trace_stack_frame { zend_jit_trace_stack_frame *call; zend_jit_trace_stack_frame *prev; const zend_function *func; const zend_op *call_opline; zend_class_entry *ce; /* $this */ uint32_t call_level; uint32_t _info; int used_stack; int old_checked_stack; int old_peek_checked_stack; zend_jit_trace_stack stack[1]; }; #define TRACE_FRAME_SHIFT_NUM_ARGS 16 #define TRACE_FRAME_MAX_NUM_ARGS 32767 #define TRACE_FRAME_MASK_NUM_ARGS 0xffff0000 #define TRACE_FRAME_MASK_NESTED 0x00000001 #define TRACE_FRAME_MASK_LAST_SEND_BY_REF 0x00000002 #define TRACE_FRAME_MASK_LAST_SEND_BY_VAL 0x00000004 #define TRACE_FRAME_MASK_RETURN_VALUE_USED 0x00000008 #define TRACE_FRAME_MASK_RETURN_VALUE_UNUSED 0x00000010 #define TRACE_FRAME_MASK_THIS_CHECKED 0x00000020 #define TRACE_FRAME_MASK_UNKNOWN_RETURN 0x00000040 #define TRACE_FRAME_MASK_NO_NEED_RELEASE_THIS 0x00000080 #define TRACE_FRAME_MASK_THIS_CLASS_CHECKED 0x00000100 #define TRACE_FRAME_MASK_CLOSURE_CALL 0x00000200 #define TRACE_FRAME_MASK_ALWAYS_RELEASE_THIS 0x00000400 #define TRACE_FRAME_INIT(frame, _func, _flags, num_args) do { \ zend_jit_trace_stack_frame *_frame = (frame); \ _frame->call = NULL; \ _frame->prev = NULL; \ _frame->func = (const zend_function*)_func; \ _frame->call_opline = NULL; \ _frame->call_level = 0; \ _frame->_info = (((uint32_t)(num_args)) << TRACE_FRAME_SHIFT_NUM_ARGS) & TRACE_FRAME_MASK_NUM_ARGS; \ _frame->_info |= _flags; \ } while (0) #define TRACE_FRAME_RETURN_SSA_VAR(frame) \ ((int)(frame)->_info) #define TRACE_FRAME_NUM_ARGS(frame) \ ((int)((frame)->_info) >> TRACE_FRAME_SHIFT_NUM_ARGS) #define TRACE_FRAME_IS_NESTED(frame) \ ((frame)->_info & TRACE_FRAME_MASK_NESTED) #define TRACE_FRAME_IS_LAST_SEND_BY_REF(frame) \ ((frame)->_info & TRACE_FRAME_MASK_LAST_SEND_BY_REF) #define TRACE_FRAME_IS_LAST_SEND_BY_VAL(frame) \ ((frame)->_info & TRACE_FRAME_MASK_LAST_SEND_BY_VAL) #define TRACE_FRAME_IS_RETURN_VALUE_USED(frame) \ ((frame)->_info & TRACE_FRAME_MASK_RETURN_VALUE_USED) #define TRACE_FRAME_IS_RETURN_VALUE_UNUSED(frame) \ ((frame)->_info & TRACE_FRAME_MASK_RETURN_VALUE_UNUSED) #define TRACE_FRAME_IS_THIS_CHECKED(frame) \ ((frame)->_info & TRACE_FRAME_MASK_THIS_CHECKED) #define TRACE_FRAME_IS_UNKNOWN_RETURN(frame) \ ((frame)->_info & TRACE_FRAME_MASK_UNKNOWN_RETURN) #define TRACE_FRAME_NO_NEED_RELEASE_THIS(frame) \ ((frame)->_info & TRACE_FRAME_MASK_NO_NEED_RELEASE_THIS) #define TRACE_FRAME_IS_THIS_CLASS_CHECKED(frame) \ ((frame)->_info & TRACE_FRAME_MASK_THIS_CLASS_CHECKED) #define TRACE_FRAME_IS_CLOSURE_CALL(frame) \ ((frame)->_info & TRACE_FRAME_MASK_CLOSURE_CALL) #define TRACE_FRAME_ALWAYS_RELEASE_THIS(frame) \ ((frame)->_info & TRACE_FRAME_MASK_ALWAYS_RELEASE_THIS) #define TRACE_FRAME_SET_UNKNOWN_NUM_ARGS(frame) do { \ (frame)->_info |= (0xffffu << TRACE_FRAME_SHIFT_NUM_ARGS); \ } while (0) #define TRACE_FRAME_SET_RETURN_SSA_VAR(frame, var) do { \ (frame)->_info = var; \ } while (0) #define TRACE_FRAME_SET_LAST_SEND_BY_REF(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_LAST_SEND_BY_REF; \ (frame)->_info &= ~TRACE_FRAME_MASK_LAST_SEND_BY_VAL; \ } while (0) #define TRACE_FRAME_SET_LAST_SEND_BY_VAL(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_LAST_SEND_BY_VAL; \ (frame)->_info &= ~TRACE_FRAME_MASK_LAST_SEND_BY_REF; \ } while (0) #define TRACE_FRAME_SET_LAST_SEND_UNKNOWN(frame) do { \ (frame)->_info &= ~TRACE_FRAME_MASK_LAST_SEND_BY_VAL; \ (frame)->_info &= ~TRACE_FRAME_MASK_LAST_SEND_BY_REF; \ } while (0) #define TRACE_FRAME_SET_RETURN_VALUE_USED(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_RETURN_VALUE_USED; \ (frame)->_info &= ~TRACE_FRAME_MASK_RETURN_VALUE_UNUSED; \ } while (0) #define TRACE_FRAME_SET_RETURN_VALUE_UNUSED(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_RETURN_VALUE_UNUSED; \ (frame)->_info &= ~TRACE_FRAME_MASK_RETURN_VALUE_USED; \ } while (0) #define TRACE_FRAME_SET_THIS_CHECKED(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_THIS_CHECKED; \ } while (0) #define TRACE_FRAME_SET_NO_NEED_RELEASE_THIS(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_NO_NEED_RELEASE_THIS; \ } while (0) #define TRACE_FRAME_SET_THIS_CLASS_CHECKED(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_THIS_CLASS_CHECKED; \ } while (0) #define TRACE_FRAME_SET_CLOSURE_CALL(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_CLOSURE_CALL; \ } while (0) #define TRACE_FRAME_SET_ALWAYS_RELEASE_THIS(frame) do { \ (frame)->_info |= TRACE_FRAME_MASK_ALWAYS_RELEASE_THIS; \ } while (0) #if ZEND_VM_KIND == ZEND_VM_KIND_CALL || ZEND_VM_KIND == ZEND_VM_KIND_TAILCALL ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_func_trace_helper(ZEND_OPCODE_HANDLER_ARGS); ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_ret_trace_helper(ZEND_OPCODE_HANDLER_ARGS); ZEND_OPCODE_HANDLER_RET ZEND_OPCODE_HANDLER_CCONV zend_jit_loop_trace_helper(ZEND_OPCODE_HANDLER_ARGS); #endif int ZEND_FASTCALL zend_jit_trace_hot_root(zend_execute_data *execute_data, const zend_op *opline); zend_jit_trace_stop ZEND_FASTCALL zend_jit_trace_execute(zend_execute_data *execute_data, const zend_op *opline, zend_jit_trace_rec *trace_buffer, uint8_t start, uint32_t is_megamorphc, int ret_depth); static zend_always_inline const zend_op* zend_jit_trace_get_exit_opline(zend_jit_trace_rec *trace, const zend_op *opline, bool *exit_if_true) { if (trace->op == ZEND_JIT_TRACE_VM || trace->op == ZEND_JIT_TRACE_END) { if (trace->opline == opline + 1) { /* not taken branch */ *exit_if_true = opline->opcode == ZEND_JMPNZ; return OP_JMP_ADDR(opline, opline->op2); } else if (trace->opline == OP_JMP_ADDR(opline, opline->op2)) { /* taken branch */ *exit_if_true = opline->opcode == ZEND_JMPZ; return opline + 1; } else { ZEND_UNREACHABLE(); } } else { ZEND_UNREACHABLE(); } *exit_if_true = 0; return NULL; } static zend_always_inline bool zend_jit_may_be_polymorphic_call(const zend_op *opline) { if (opline->opcode == ZEND_INIT_FCALL || opline->opcode == ZEND_INIT_FCALL_BY_NAME || opline->opcode == ZEND_INIT_NS_FCALL_BY_NAME || opline->opcode == ZEND_INIT_PARENT_PROPERTY_HOOK_CALL) { return 0; } else if (opline->opcode == ZEND_INIT_METHOD_CALL || opline->opcode == ZEND_INIT_DYNAMIC_CALL) { return 1; } else if (opline->opcode == ZEND_INIT_STATIC_METHOD_CALL) { return (opline->op1_type != IS_CONST || opline->op2_type != IS_CONST); } else if (opline->opcode == ZEND_INIT_USER_CALL) { return (opline->op2_type != IS_CONST); } else if (opline->opcode == ZEND_NEW) { return (opline->op1_type != IS_CONST); } else { ZEND_UNREACHABLE(); return 0; } } /* Instruction cache flush */ #ifndef JIT_CACHE_FLUSH # if ZEND_JIT_TARGET_ARM64 # if ((defined(__GNUC__) && ZEND_GCC_VERSION >= 4003) || __has_builtin(__builtin___clear_cache)) # define JIT_CACHE_FLUSH(from, to) __builtin___clear_cache((char*)(from), (char*)(to)) # else # error "Missing builtin to flush instruction cache for AArch64" # endif # else /* Not required to implement on archs with unified caches */ # define JIT_CACHE_FLUSH(from, to) # endif #endif /* !JIT_CACHE_FLUSH */ /* bit helpers */ static zend_always_inline bool zend_long_is_power_of_two(zend_long x) { return (x > 0) && !(x & (x - 1)); } /* from http://aggregate.org/MAGIC/ */ static zend_always_inline uint32_t ones32(uint32_t x) { x -= ((x >> 1) & 0x55555555); x = (((x >> 2) & 0x33333333) + (x & 0x33333333)); x = (((x >> 4) + x) & 0x0f0f0f0f); x += (x >> 8); x += (x >> 16); return x & 0x0000003f; } static zend_always_inline uint32_t floor_log2(uint32_t x) { ZEND_ASSERT(x != 0); x |= (x >> 1); x |= (x >> 2); x |= (x >> 4); x |= (x >> 8); x |= (x >> 16); return ones32(x) - 1; } static zend_always_inline bool is_power_of_two(uint32_t x) { return !(x & (x - 1)) && x != 0; } static zend_always_inline bool has_concrete_type(uint32_t value_type) { return is_power_of_two (value_type & (MAY_BE_ANY|MAY_BE_UNDEF)); } static zend_always_inline uint32_t concrete_type(uint32_t value_type) { return floor_log2(value_type & (MAY_BE_ANY|MAY_BE_UNDEF)); } static zend_always_inline bool is_signed(double d) { return (((unsigned char*)&d)[sizeof(double)-1] & 0x80) != 0; } #endif /* ZEND_JIT_INTERNAL_H */