added tag v1_9_0_4

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/tags/v1_9_0_4@18845 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 148 insertions, 0 deletions

diff --git a/trunk/insnhelper.h b/trunk/insnhelper.h
new file mode 100644
index 0000000000..a862f2672e
--- /dev/null
+++ b/trunk/insnhelper.h
@@ -0,0 +1,148 @@
+/**********************************************************************
+
+  insnhelper.h - helper macros to implement each instructions
+
+  $Author$
+  created at: 04/01/01 15:50:34 JST
+
+  Copyright (C) 2004-2007 Koichi Sasada
+
+**********************************************************************/
+
+#ifndef RUBY_INSNHELPER_H
+#define RUBY_INSNHELPER_H
+
+#include "ruby/ruby.h"
+#include "ruby/node.h"
+#include "eval_intern.h"
+#include "vm_core.h"
+#include "vm.h"
+
+/**********************************************************/
+/* deal with stack                                        */
+/**********************************************************/
+
+#define PUSH(x) (SET_SV(x), INC_SP(1))
+#define TOPN(n) (*(GET_SP()-(n)-1))
+#define POPN(n) (DEC_SP(n))
+#define POP()   (DEC_SP(1))
+#define STACK_ADDR_FROM_TOP(n) (GET_SP()-(n))
+
+#define GET_TOS()  (tos)	/* dummy */
+
+/**********************************************************/
+/* deal with registers                                    */
+/**********************************************************/
+
+#define REG_CFP (reg_cfp)
+#define REG_PC  (REG_CFP->pc)
+#define REG_SP  (REG_CFP->sp)
+#define REG_LFP (REG_CFP->lfp)
+#define REG_DFP (REG_CFP->dfp)
+
+#define RESTORE_REGS() do { \
+  REG_CFP = th->cfp; \
+} while (0)
+
+#define REG_A   reg_a
+#define REG_B   reg_b
+
+#ifdef COLLECT_USAGE_ANALYSIS
+#define USAGE_ANALYSIS_REGISTER_HELPER(a, b, v) \
+  (USAGE_ANALYSIS_REGISTER(a, b), (v))
+#else
+#define USAGE_ANALYSIS_REGISTER_HELPER(a, b, v) (v)
+#endif
+
+/* PC */
+#define GET_PC()           (USAGE_ANALYSIS_REGISTER_HELPER(0, 0, REG_PC))
+#define SET_PC(x)          (REG_PC = (USAGE_ANALYSIS_REGISTER_HELPER(0, 1, x)))
+#define GET_CURRENT_INSN() (*GET_PC())
+#define GET_OPERAND(n)     (GET_PC()[(n)])
+#define ADD_PC(n)          (SET_PC(REG_PC + (n)))
+
+#define GET_PC_COUNT()     (REG_PC - GET_ISEQ()->iseq_encoded)
+#define JUMP(dst)          (REG_PC += (dst))
+
+/* FP */
+#define GET_CFP()  (USAGE_ANALYSIS_REGISTER_HELPER(2, 0, REG_CFP))
+#define GET_LFP()  (USAGE_ANALYSIS_REGISTER_HELPER(3, 0, REG_LFP))
+#define SET_LFP(x) (REG_LFP = (USAGE_ANALYSIS_REGISTER_HELPER(3, 1, (x))))
+#define GET_DFP()  (USAGE_ANALYSIS_REGISTER_HELPER(4, 0, REG_DFP))
+#define SET_DFP(x) (REG_DFP = (USAGE_ANALYSIS_REGISTER_HELPER(4, 1, (x))))
+
+/* SP */
+#define GET_SP()   (USAGE_ANALYSIS_REGISTER_HELPER(1, 0, REG_SP))
+#define SET_SP(x)  (REG_SP  = (USAGE_ANALYSIS_REGISTER_HELPER(1, 1, (x))))
+#define INC_SP(x)  (REG_SP += (USAGE_ANALYSIS_REGISTER_HELPER(1, 1, (x))))
+#define DEC_SP(x)  (REG_SP -= (USAGE_ANALYSIS_REGISTER_HELPER(1, 1, (x))))
+#define SET_SV(x)  (*GET_SP() = (x))
+  /* set current stack value as x */
+
+#define GET_SP_COUNT() (REG_SP - th->stack)
+
+/* instruction sequence C struct */
+#define GET_ISEQ() (GET_CFP()->iseq)
+
+/**********************************************************/
+/* deal with variables                                    */
+/**********************************************************/
+
+#define GET_PREV_DFP(dfp)                ((VALUE *)((dfp)[0] & ~0x03))
+
+#define GET_GLOBAL(entry)       rb_gvar_get((struct global_entry*)entry)
+#define SET_GLOBAL(entry, val)  rb_gvar_set((struct global_entry*)entry, val)
+
+#define GET_CONST_INLINE_CACHE(dst) ((IC) * (GET_PC() + (dst) + 1))
+
+/**********************************************************/
+/* deal with values                                       */
+/**********************************************************/
+
+#define GET_SELF() (USAGE_ANALYSIS_REGISTER_HELPER(5, 0, GET_CFP()->self))
+
+/**********************************************************/
+/* deal with control flow 2: method/iterator              */
+/**********************************************************/
+
+#define COPY_CREF(c1, c2) do {  \
+  NODE *__tmp_c2 = (c2); \
+  c1->nd_clss = __tmp_c2->nd_clss; \
+  c1->nd_visi = __tmp_c2->nd_visi; \
+  c1->nd_next = __tmp_c2->nd_next; \
+} while (0)
+
+#define CALL_METHOD(num, blockptr, flag, id, mn, recv, klass) do { \
+    VALUE v = vm_call_method(th, GET_CFP(), num, blockptr, flag, id, mn, recv, klass); \
+    if (v == Qundef) { \
+	RESTORE_REGS(); \
+	NEXT_INSN(); \
+    } \
+    else { \
+	val = v; \
+    } \
+} while (0)
+
+#define GET_BLOCK_PTR() \
+  ((rb_block_t *)(GC_GUARDED_PTR_REF(GET_LFP()[0])))
+
+/**********************************************************/
+/* deal with control flow 3: exception                    */
+/**********************************************************/
+
+
+/**********************************************************/
+/* others                                                 */
+/**********************************************************/
+
+/* optimize insn */
+#define FIXNUM_2_P(a, b) ((a) & (b) & 1)
+#define BASIC_OP_UNREDEFINED_P(op) ((ruby_vm_redefined_flag & (op)) == 0)
+#define HEAP_CLASS_OF(obj) RBASIC(obj)->klass
+
+#define CALL_SIMPLE_METHOD(num, id, recv) do { \
+    VALUE klass = CLASS_OF(recv); \
+    CALL_METHOD(num, 0, 0, id, rb_method_node(klass, id), recv, CLASS_OF(recv)); \
+} while (0)
+
+#endif /* RUBY_INSNHELPER_H */