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Diffstat (limited to 'Source/JavaScriptCore/bytecode/Opcode.h')
| -rw-r--r-- | Source/JavaScriptCore/bytecode/Opcode.h | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/Source/JavaScriptCore/bytecode/Opcode.h b/Source/JavaScriptCore/bytecode/Opcode.h new file mode 100644 index 000000000..4801e4c32 --- /dev/null +++ b/Source/JavaScriptCore/bytecode/Opcode.h @@ -0,0 +1,278 @@ +/* + * Copyright (C) 2008, 2009 Apple Inc. All rights reserved. + * Copyright (C) 2008 Cameron Zwarich <cwzwarich@uwaterloo.ca> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of Apple Computer, Inc. ("Apple") nor the names of + * its contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY APPLE AND ITS CONTRIBUTORS "AS IS" AND ANY + * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED + * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL APPLE OR ITS CONTRIBUTORS BE LIABLE FOR ANY + * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES + * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; + * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND + * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#ifndef Opcode_h +#define Opcode_h + +#include <algorithm> +#include <string.h> + +#include <wtf/Assertions.h> + +namespace JSC { + + #define FOR_EACH_OPCODE_ID(macro) \ + macro(op_enter, 1) \ + macro(op_create_activation, 2) \ + macro(op_init_lazy_reg, 2) \ + macro(op_create_arguments, 2) \ + macro(op_create_this, 3) \ + macro(op_get_callee, 2) \ + macro(op_convert_this, 2) \ + \ + macro(op_new_object, 2) \ + macro(op_new_array, 4) \ + macro(op_new_array_buffer, 4) \ + macro(op_new_regexp, 3) \ + macro(op_mov, 3) \ + \ + macro(op_not, 3) \ + macro(op_eq, 4) \ + macro(op_eq_null, 3) \ + macro(op_neq, 4) \ + macro(op_neq_null, 3) \ + macro(op_stricteq, 4) \ + macro(op_nstricteq, 4) \ + macro(op_less, 4) \ + macro(op_lesseq, 4) \ + macro(op_greater, 4) \ + macro(op_greatereq, 4) \ + \ + macro(op_pre_inc, 2) \ + macro(op_pre_dec, 2) \ + macro(op_post_inc, 3) \ + macro(op_post_dec, 3) \ + macro(op_to_jsnumber, 3) \ + macro(op_negate, 3) \ + macro(op_add, 5) \ + macro(op_mul, 5) \ + macro(op_div, 5) \ + macro(op_mod, 4) \ + macro(op_sub, 5) \ + \ + macro(op_lshift, 4) \ + macro(op_rshift, 4) \ + macro(op_urshift, 4) \ + macro(op_bitand, 5) \ + macro(op_bitxor, 5) \ + macro(op_bitor, 5) \ + macro(op_bitnot, 3) \ + \ + macro(op_check_has_instance, 2) \ + macro(op_instanceof, 5) \ + macro(op_typeof, 3) \ + macro(op_is_undefined, 3) \ + macro(op_is_boolean, 3) \ + macro(op_is_number, 3) \ + macro(op_is_string, 3) \ + macro(op_is_object, 3) \ + macro(op_is_function, 3) \ + macro(op_in, 4) \ + \ + macro(op_resolve, 3) \ + macro(op_resolve_skip, 4) \ + macro(op_resolve_global, 5) \ + macro(op_resolve_global_dynamic, 6) \ + macro(op_get_scoped_var, 4) \ + macro(op_put_scoped_var, 4) \ + macro(op_get_global_var, 3) \ + macro(op_put_global_var, 3) \ + macro(op_resolve_base, 4) \ + macro(op_ensure_property_exists, 3) \ + macro(op_resolve_with_base, 4) \ + macro(op_resolve_with_this, 4) \ + macro(op_get_by_id, 8) \ + macro(op_get_by_id_self, 8) \ + macro(op_get_by_id_proto, 8) \ + macro(op_get_by_id_chain, 8) \ + macro(op_get_by_id_getter_self, 8) \ + macro(op_get_by_id_getter_proto, 8) \ + macro(op_get_by_id_getter_chain, 8) \ + macro(op_get_by_id_custom_self, 8) \ + macro(op_get_by_id_custom_proto, 8) \ + macro(op_get_by_id_custom_chain, 8) \ + macro(op_get_by_id_generic, 8) \ + macro(op_get_array_length, 8) \ + macro(op_get_string_length, 8) \ + macro(op_get_arguments_length, 4) \ + macro(op_put_by_id, 9) \ + macro(op_put_by_id_transition, 9) \ + macro(op_put_by_id_replace, 9) \ + macro(op_put_by_id_generic, 9) \ + macro(op_del_by_id, 4) \ + macro(op_get_by_val, 4) \ + macro(op_get_argument_by_val, 4) \ + macro(op_get_by_pname, 7) \ + macro(op_put_by_val, 4) \ + macro(op_del_by_val, 4) \ + macro(op_put_by_index, 4) \ + macro(op_put_getter, 4) \ + macro(op_put_setter, 4) \ + \ + macro(op_jmp, 2) \ + macro(op_jtrue, 3) \ + macro(op_jfalse, 3) \ + macro(op_jeq_null, 3) \ + macro(op_jneq_null, 3) \ + macro(op_jneq_ptr, 4) \ + macro(op_jless, 4) \ + macro(op_jlesseq, 4) \ + macro(op_jgreater, 4) \ + macro(op_jgreatereq, 4) \ + macro(op_jnless, 4) \ + macro(op_jnlesseq, 4) \ + macro(op_jngreater, 4) \ + macro(op_jngreatereq, 4) \ + macro(op_jmp_scopes, 3) \ + macro(op_loop, 2) \ + macro(op_loop_if_true, 3) \ + macro(op_loop_if_false, 3) \ + macro(op_loop_if_less, 4) \ + macro(op_loop_if_lesseq, 4) \ + macro(op_loop_if_greater, 4) \ + macro(op_loop_if_greatereq, 4) \ + macro(op_loop_hint, 1) \ + macro(op_switch_imm, 4) \ + macro(op_switch_char, 4) \ + macro(op_switch_string, 4) \ + \ + macro(op_new_func, 4) \ + macro(op_new_func_exp, 3) \ + macro(op_call, 6) \ + macro(op_call_eval, 6) \ + macro(op_call_varargs, 5) \ + macro(op_tear_off_activation, 3) \ + macro(op_tear_off_arguments, 2) \ + macro(op_ret, 2) \ + macro(op_call_put_result, 2) \ + macro(op_ret_object_or_this, 3) \ + macro(op_method_check, 1) \ + \ + macro(op_construct, 6) \ + macro(op_strcat, 4) \ + macro(op_to_primitive, 3) \ + \ + macro(op_get_pnames, 6) \ + macro(op_next_pname, 7) \ + \ + macro(op_push_scope, 2) \ + macro(op_pop_scope, 1) \ + macro(op_push_new_scope, 4) \ + \ + macro(op_catch, 2) \ + macro(op_throw, 2) \ + macro(op_throw_reference_error, 2) \ + \ + macro(op_jsr, 3) \ + macro(op_sret, 2) \ + \ + macro(op_debug, 4) \ + macro(op_profile_will_call, 2) \ + macro(op_profile_did_call, 2) \ + \ + macro(op_end, 2) // end must be the last opcode in the list + + #define OPCODE_ID_ENUM(opcode, length) opcode, + typedef enum { FOR_EACH_OPCODE_ID(OPCODE_ID_ENUM) } OpcodeID; + #undef OPCODE_ID_ENUM + + const int numOpcodeIDs = op_end + 1; + + #define OPCODE_ID_LENGTHS(id, length) const int id##_length = length; + FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS); + #undef OPCODE_ID_LENGTHS + + #define OPCODE_LENGTH(opcode) opcode##_length + + #define OPCODE_ID_LENGTH_MAP(opcode, length) length, + const int opcodeLengths[numOpcodeIDs] = { FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTH_MAP) }; + #undef OPCODE_ID_LENGTH_MAP + + #define VERIFY_OPCODE_ID(id, size) COMPILE_ASSERT(id <= op_end, ASSERT_THAT_JS_OPCODE_IDS_ARE_VALID); + FOR_EACH_OPCODE_ID(VERIFY_OPCODE_ID); + #undef VERIFY_OPCODE_ID + +#if ENABLE(COMPUTED_GOTO_INTERPRETER) +#if COMPILER(RVCT) || COMPILER(INTEL) + typedef void* Opcode; +#else + typedef const void* Opcode; +#endif +#else + typedef OpcodeID Opcode; +#endif + +#if !defined(NDEBUG) || ENABLE(OPCODE_SAMPLING) || ENABLE(CODEBLOCK_SAMPLING) || ENABLE(OPCODE_STATS) + +#define PADDING_STRING " " +#define PADDING_STRING_LENGTH static_cast<unsigned>(strlen(PADDING_STRING)) + + extern const char* const opcodeNames[]; + + inline const char* padOpcodeName(OpcodeID op, unsigned width) + { + unsigned pad = width - strlen(opcodeNames[op]); + pad = std::min(pad, PADDING_STRING_LENGTH); + return PADDING_STRING + PADDING_STRING_LENGTH - pad; + } + +#undef PADDING_STRING_LENGTH +#undef PADDING_STRING + +#endif + +#if ENABLE(OPCODE_STATS) + + struct OpcodeStats { + OpcodeStats(); + ~OpcodeStats(); + static long long opcodeCounts[numOpcodeIDs]; + static long long opcodePairCounts[numOpcodeIDs][numOpcodeIDs]; + static int lastOpcode; + + static void recordInstruction(int opcode); + static void resetLastInstruction(); + }; + +#endif + + inline size_t opcodeLength(OpcodeID opcode) + { + switch (opcode) { +#define OPCODE_ID_LENGTHS(id, length) case id: return OPCODE_LENGTH(id); + FOR_EACH_OPCODE_ID(OPCODE_ID_LENGTHS) +#undef OPCODE_ID_LENGTHS + } + ASSERT_NOT_REACHED(); + return 0; + } + +} // namespace JSC + +#endif // Opcode_h |