ruby/vm_exec.h

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/**********************************************************************
vm.h -
$Author$
created at: 04/01/01 16:56:59 JST
Copyright (C) 2004-2007 Koichi Sasada
**********************************************************************/
#ifndef RUBY_VM_EXEC_H
#define RUBY_VM_EXEC_H
typedef long OFFSET;
typedef unsigned long lindex_t;
typedef VALUE GENTRY;
typedef rb_iseq_t *ISEQ;
#ifdef __GCC__
/* TODO: machine dependent prefetch instruction */
#define PREFETCH(pc)
#else
#define PREFETCH(pc)
#endif
#if VMDEBUG > 0
#define debugs printf
#define DEBUG_ENTER_INSN(insn) \
rb_vmdebug_debug_print_pre(th, GET_CFP(),GET_PC());
#if OPT_STACK_CACHING
#define SC_REGS() , reg_a, reg_b
#else
#define SC_REGS()
#endif
#define DEBUG_END_INSN() \
* vm_core.h: remove lfp (local frame pointer) and rename dfp (dynamic frame pointer) to ep (environment pointer). This change make VM `normal' (similar to other interpreters). Before this commit: Each frame has two env pointers lfp and dfp. lfp points local environment which is method/class/toplevel frame. lfp[0] is block pointer. dfp is block local frame. dfp[0] points previous (parent) environment pointer. lfp == dfp when frame is method/class/toplevel. You can get lfp from dfp by traversing previous environment pointers. After this commit: Each frame has only `ep' to point respective enviornoment. If there is parent environment, then ep[0] points parent envioenment (as dfp). If there are no more environment, then ep[0] points block pointer (as lfp). We call such ep as `LEP' (local EP). We add some macros to get LEP and to detect LEP or not. In short, we replace dfp and lfp with ep and LEP. rb_block_t and rb_binding_t member `lfp' and `dfp' are removed and member `ep' is added. rename rb_thread_t's member `local_lfp' and `local_svar' to `root_lep' and `root_svar'. (VM_EP_PREV_EP(ep)): get previous environment pointer. This macro assume that ep is not LEP. (VM_EP_BLOCK_PTR(ep)): get block pointer. This macro assume that ep is LEP. (VM_EP_LEP_P(ep)): detect ep is LEP or not. (VM_ENVVAL_BLOCK_PTR(ptr)): make block pointer. (VM_ENVVAL_BLOCK_PTR_P(v)): detect v is block pointer. (VM_ENVVAL_PREV_EP_PTR(ptr)): make prev environment pointer. (VM_ENVVAL_PREV_EP_PTR_P(v)): detect v is prev env pointer. * vm.c: apply above changes. (VM_EP_LEP(ep)): get LEP. (VM_CF_LEP(cfp)): get LEP of cfp->ep. (VM_CF_PREV_EP(cfp)): utility function VM_EP_PREV_EP(cfp->ep). (VM_CF_BLOCK_PTR(cfp)): utility function VM_EP_BLOCK_PTR(cfp->ep). * vm.c, vm_eval.c, vm_insnhelper.c, vm_insnhelper.h, insns.def: apply above changes. * cont.c: ditto. * eval.c, eval_intern.h: ditto. * proc.c: ditto. * thread.c: ditto. * vm_dump.c: ditto. * vm_exec.h: fix function name (on vm debug mode). git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@36030 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
2012-06-11 07:14:59 +04:00
rb_vmdebug_debug_print_post(th, GET_CFP() SC_REGS());
#else
#define debugs
#define DEBUG_ENTER_INSN(insn)
#define DEBUG_END_INSN()
#endif
#define throwdebug if(0)printf
/* #define throwdebug printf */
/************************************************/
#if defined(DISPATCH_XXX)
error !
/************************************************/
#elif OPT_CALL_THREADED_CODE
#define LABEL(x) insn_func_##x
#define ELABEL(x)
#define LABEL_PTR(x) &LABEL(x)
#define INSN_ENTRY(insn) \
static rb_control_frame_t * \
FUNC_FASTCALL(LABEL(insn))(rb_thread_t *th, rb_control_frame_t *reg_cfp) {
#define END_INSN(insn) return reg_cfp;}
#define NEXT_INSN() return reg_cfp;
/************************************************/
#elif OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
/* threaded code with gcc */
#define LABEL(x) INSN_LABEL_##x
#define ELABEL(x) INSN_ELABEL_##x
#define LABEL_PTR(x) &&LABEL(x)
#define INSN_ENTRY_SIG(insn)
#define INSN_DISPATCH_SIG(insn)
#define INSN_ENTRY(insn) \
LABEL(insn): \
INSN_ENTRY_SIG(insn); \
/* dispatcher */
#if defined(__GNUC__) && (defined(__i386__) || defined(__x86_64__)) && __GNUC__ == 3
#define DISPATCH_ARCH_DEPEND_WAY(addr) \
__asm__ __volatile__("jmp *%0;\t# -- inserted by vm.h\t[length = 2]" : : "r" (addr))
#else
#define DISPATCH_ARCH_DEPEND_WAY(addr) \
/* do nothing */
#endif
/**********************************/
#if OPT_DIRECT_THREADED_CODE
/* for GCC 3.4.x */
#define TC_DISPATCH(insn) \
INSN_DISPATCH_SIG(insn); \
goto *(void const *)GET_CURRENT_INSN(); \
;
#else
/* token threaded code */
#define TC_DISPATCH(insn) \
DISPATCH_ARCH_DEPEND_WAY(insns_address_table[GET_CURRENT_INSN()]); \
INSN_DISPATCH_SIG(insn); \
goto *insns_address_table[GET_CURRENT_INSN()]; \
rb_bug("tc error");
#endif /* DISPATCH_DIRECT_THREADED_CODE */
#define END_INSN(insn) \
DEBUG_END_INSN(); \
TC_DISPATCH(insn);
#define INSN_DISPATCH() \
TC_DISPATCH(__START__) \
{
#define END_INSNS_DISPATCH() \
rb_bug("unknown insn: %"PRIdVALUE, GET_CURRENT_INSN()); \
} /* end of while loop */ \
#define NEXT_INSN() TC_DISPATCH(__NEXT_INSN__)
/************************************************/
#else /* no threaded code */
/* most common method */
#define INSN_ENTRY(insn) \
case BIN(insn):
#define END_INSN(insn) \
DEBUG_END_INSN(); \
break;
#define INSN_DISPATCH() \
while (1) { \
switch (GET_CURRENT_INSN()) {
#define END_INSNS_DISPATCH() \
default: \
SDR(); \
rb_bug("unknown insn: %ld", GET_CURRENT_INSN()); \
} /* end of switch */ \
} /* end of while loop */ \
#define NEXT_INSN() goto first
#endif
#define VM_SP_CNT(th, sp) ((sp) - (th)->ec.vm_stack)
#if OPT_CALL_THREADED_CODE
#define THROW_EXCEPTION(exc) do { \
th->ec.errinfo = (VALUE)(exc); \
return 0; \
} while (0)
#else
#define THROW_EXCEPTION(exc) return (VALUE)(exc)
#endif
#define SCREG(r) (reg_##r)
#define VM_DEBUG_STACKOVERFLOW 0
#if VM_DEBUG_STACKOVERFLOW
#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin) \
WHEN_VM_STACK_OVERFLOWED(cfp, (cfp)->sp, margin) vm_stack_overflow_for_insn()
#else
#define CHECK_VM_STACK_OVERFLOW_FOR_INSN(cfp, margin)
#endif
#endif /* RUBY_VM_EXEC_H */