зеркало из https://github.com/github/ruby.git
304 строки
7.2 KiB
C
304 строки
7.2 KiB
C
/**********************************************************************
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vm.h -
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$Author$
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$Date$
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created at: 04/01/01 16:56:59 JST
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Copyright (C) 2004-2006 Koichi Sasada
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**********************************************************************/
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#ifndef _VM_H_INCLUDED_
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#define _VM_H_INCLUDED_
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#if YARVDEBUG > VMDEBUG
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#undef VMDEBUG
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#define VMDEBUG YARVDEBUG
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#endif
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typedef long OFFSET;
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typedef unsigned long rb_num_t;
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typedef unsigned long lindex_t;
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typedef unsigned long dindex_t;
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typedef rb_num_t GENTRY;
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extern VALUE rb_cEnv;
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extern VALUE ruby_vm_global_state_version;
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extern VALUE ruby_vm_redefined_flag;
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/**
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* VM Debug Level
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*
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* debug level:
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* 0: no debug output
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* 1: show instruction name
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* 2:
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* 3: show stack status
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* 4: show register
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* 5:
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* 10: gc check
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*/
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#if 0
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#undef VMDEBUG
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#define VMDEBUG 3
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#endif
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#ifdef COLLECT_USAGE_ANALYSIS
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#define USAGE_ANALYSIS_INSN(insn) vm_analysis_insn(insn)
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#define USAGE_ANALYSIS_OPERAND(insn, n, op) vm_analysis_operand(insn, n, (VALUE)op)
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#define USAGE_ANALYSIS_REGISTER(reg, s) vm_analysis_register(reg, s)
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#else
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#define USAGE_ANALYSIS_INSN(insn) /* none */
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#define USAGE_ANALYSIS_OPERAND(insn, n, op) /* none */
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#define USAGE_ANALYSIS_REGISTER(reg, s) /* none */
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#endif
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#ifdef __GCC__
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/* TODO: machine dependent prefetch instruction */
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#define PREFETCH(pc)
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#else
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#define PREFETCH(pc)
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#endif
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#if VMDEBUG > 0
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#define debugs printf
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#define DEBUG_ENTER_INSN(insn) \
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debug_print_pre(th, GET_CFP());
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#if OPT_STACK_CACHING
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#define SC_REGS() , reg_a, reg_b
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#else
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#define SC_REGS()
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#endif
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#define DEBUG_END_INSN() \
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debug_print_post(th, GET_CFP() SC_REGS());
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#else
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#define debugs
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#define DEBUG_ENTER_INSN(insn)
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#define DEBUG_END_INSN()
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#endif
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#define throwdebug if(0)printf
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/* #define throwdebug printf */
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#define SDR2(cfp) vm_stack_dump_raw(GET_THREAD(), (cfp))
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/************************************************/
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#if DISPATCH_XXX
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error !
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/************************************************/
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#elif OPT_CALL_THREADED_CODE
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#define LABEL(x) insn_func_##x
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#define ELABEL(x)
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#define LABEL_PTR(x) &LABEL(x)
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#ifndef FUNC_FASTCALL
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#define FUNC_FASTCALL(x) x
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#endif
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typedef rb_control_frame_t *
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(FUNC_FASTCALL(*insn_func_type))(rb_thread_t *, rb_control_frame_t *);
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#define INSN_ENTRY(insn) \
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static rb_control_frame_t * \
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FUNC_FASTCALL(LABEL(insn))(rb_thread_t *th, rb_control_frame_t *reg_cfp) {
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#define END_INSN(insn) return reg_cfp;}
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#define NEXT_INSN() return reg_cfp;
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/************************************************/
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#elif OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
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/* threaded code with gcc */
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#define LABEL(x) INSN_LABEL_##x
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#define ELABEL(x) INSN_ELABEL_##x
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#define LABEL_PTR(x) &&LABEL(x)
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#define INSN_ENTRY_SIG(insn) \
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asm volatile ( "; #**************************************************\n" \
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"\t; #[start] " # insn "\n") \
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#define INSN_DISPATCH_SIG(insn) \
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asm volatile ( "; #[end ] " # insn "\n"\
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"\t; #==================================================\n") \
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#define INSN_ENTRY(insn) \
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LABEL(insn): \
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INSN_ENTRY_SIG(insn); \
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/* dispather */
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#if __GNUC__ && (__i386__ || __x86_64__) && __GNUC__ == 3
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#define DISPATCH_ARCH_DEPEND_WAY(addr) \
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asm volatile("jmp *%0;\t# -- inseted by vm.h\t[length = 2]" : : "r" (addr))
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#else
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#define DISPATCH_ARCH_DEPEND_WAY(addr) \
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/* do nothing */
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#endif
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/**********************************/
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#if OPT_DIRECT_THREADED_CODE
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/* for GCC 3.4.x */
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#define TC_DISPATCH(insn) \
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DISPATCH_ARCH_DEPEND_WAY(GET_CURRENT_INSN()); \
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INSN_DISPATCH_SIG(insn); \
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goto *GET_CURRENT_INSN(); \
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;
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#else
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/* token threade code */
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#define TC_DISPATCH(insn) \
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DISPATCH_ARCH_DEPEND_WAY(insns_address_table[GET_CURRENT_INSN()]); \
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INSN_DISPATCH_SIG(insn); \
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goto *insns_address_table[GET_CURRENT_INSN()]; \
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rb_bug("tc error");
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#endif /* DISPATCH_DIRECT_THREADED_CODE */
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#define END_INSN(insn) \
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DEBUG_END_INSN(); \
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TC_DISPATCH(insn); \
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#define INSN_DISPATCH() \
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TC_DISPATCH(__START__) \
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{
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#define END_INSNS_DISPATCH() \
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rb_bug("unknown insn: %ld", GET_CURRENT_INSN()); \
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} /* end of while loop */ \
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#define NEXT_INSN() TC_DISPATCH(__NEXT_INSN__)
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/************************************************/
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#else /* no threaded code */
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/* most common method */
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#define INSN_ENTRY(insn) \
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case BIN(insn):
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#define END_INSN(insn) \
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DEBUG_END_INSN(); \
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break;
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#define INSN_DISPATCH() \
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while(1){ \
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switch(GET_CURRENT_INSN()){
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#define END_INSNS_DISPATCH() \
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default: \
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SDR(); \
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rb_bug("unknown insn: %ld", GET_CURRENT_INSN()); \
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} /* end of switch */ \
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} /* end of while loop */ \
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#define NEXT_INSN() goto first
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#endif
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/************************************************/
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/************************************************/
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#define VM_CFP_CNT(th, cfp) \
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((rb_control_frame_t *)(th->stack + th->stack_size) - (rb_control_frame_t *)(cfp))
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#define VM_SP_CNT(th, sp) ((sp) - (th)->stack)
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/*
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env{
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env[0] // special (block or prev env)
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env[1] // env object
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env[2] // prev env val
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};
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*/
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#define ENV_IN_HEAP_P(th, env) \
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(!((th)->stack < (env) && (env) < ((th)->stack + (th)->stack_size)))
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#define ENV_VAL(env) ((env)[1])
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#define FRAME_MAGIC_METHOD 0xfaffff11
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#define FRAME_MAGIC_BLOCK 0xfaffff21
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#define FRAME_MAGIC_CLASS 0xfaffff31
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#define FRAME_MAGIC_TOP 0xfaffff41
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#define FRAME_MAGIC_FINISH 0xfaffff51
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#define FRAME_MAGIC_CFUNC 0xfaffff61
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#define FRAME_MAGIC_PROC 0xfaffff71
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#define FRAME_MAGIC_IFUNC 0xfaffff81
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#define FRAME_MAGIC_EVAL 0xfaffff91
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#define FRAME_MAGIC_LAMBDA 0xfaffffa1
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#define CHECK_FRAME_MAGIC(magic) \
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{ \
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if((magic & 0xffffff00) != 0xfaffff00){ \
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rb_bug("YARV Stack frame error: %08x", magic); \
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} \
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}
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#define RUBYVM_CFUNC_FRAME_P(cfp) \
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((cfp)->magic == FRAME_MAGIC_CFUNC)
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/*
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* Excception
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*/
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#define NEW_THROW_OBJECT(val, pt, st) NEW_NODE(NODE_LIT, (val), (pt), (st))
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#define GET_THROWOBJ_VAL(obj) ((VALUE)RNODE((obj))->u1.value)
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#define GET_THROWOBJ_CATCH_POINT(obj) ((VALUE*)RNODE((obj))->u2.value)
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#define GET_THROWOBJ_STATE(obj) ((int)RNODE((obj))->u3.value)
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#define SET_THROWOBJ_CATCH_POINT(obj, val) \
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(RNODE((obj))->u2.value = (val))
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#define SET_THROWOBJ_STATE(obj, val) \
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(RNODE((obj))->u3.value = (val))
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#if OPT_CALL_THREADED_CODE
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#define THROW_EXCEPTION(exc) do { \
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th->errinfo = (VALUE)(exc); \
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return 0; \
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} while (0)
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#else
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#define THROW_EXCEPTION(exc) return (VALUE)(exc)
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#endif
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#define SCREG(r) (reg_##r)
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/* VM state version */
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#define GET_VM_STATE_VERSION() (ruby_vm_global_state_version)
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#define INC_VM_STATE_VERSION() \
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(ruby_vm_global_state_version = (ruby_vm_global_state_version+1) & 0x8fffffff)
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#define BOP_PLUS 0x01
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#define BOP_MINUS 0x02
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#define BOP_MULT 0x04
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#define BOP_DIV 0x08
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#define BOP_MOD 0x10
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#define BOP_EQ 0x20
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#define BOP_LT 0x40
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#define BOP_LE 0x80
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#define BOP_LTLT 0x100
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#define BOP_AREF 0x200
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#define BOP_ASET 0x400
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#define BOP_LENGTH 0x800
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#define BOP_SUCC 0x1000
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#define BOP_GT 0x2000
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#define BOP_GE 0x4000
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#endif /* _VM_H_INCLUDED_ */
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