зеркало из https://github.com/github/ruby.git
144 строки
2.7 KiB
C
144 строки
2.7 KiB
C
/* -*-c-*- */
|
|
/**********************************************************************
|
|
|
|
vm_exec.c -
|
|
|
|
$Author$
|
|
|
|
Copyright (C) 2004-2007 Koichi Sasada
|
|
|
|
**********************************************************************/
|
|
|
|
#include <math.h>
|
|
|
|
#if VMDEBUG > 0
|
|
#define DECL_SC_REG(type, r, reg) register type reg_##r
|
|
|
|
#elif defined(__GNUC__) && defined(_x86_64__)
|
|
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("r" reg)
|
|
|
|
#elif defined(__GNUC__) && defined(__i386__)
|
|
#define DECL_SC_REG(type, r, reg) register type reg_##r __asm__("e" reg)
|
|
|
|
#else
|
|
#define DECL_SC_REG(type, r, reg) register type reg_##r
|
|
#endif
|
|
/* #define DECL_SC_REG(r, reg) VALUE reg_##r */
|
|
|
|
#if !OPT_CALL_THREADED_CODE
|
|
static VALUE
|
|
vm_exec_core(rb_thread_t *th, VALUE initial)
|
|
{
|
|
|
|
#if OPT_STACK_CACHING
|
|
#if 0
|
|
#elif __GNUC__ && __x86_64__
|
|
DECL_SC_REG(VALUE, a, "12");
|
|
DECL_SC_REG(VALUE, b, "13");
|
|
#else
|
|
register VALUE reg_a;
|
|
register VALUE reg_b;
|
|
#endif
|
|
#endif
|
|
|
|
#if defined(__GNUC__) && defined(__i386__)
|
|
DECL_SC_REG(VALUE *, pc, "di");
|
|
DECL_SC_REG(rb_control_frame_t *, cfp, "si");
|
|
#define USE_MACHINE_REGS 1
|
|
|
|
#elif defined(__GNUC__) && defined(__x86_64__)
|
|
DECL_SC_REG(VALUE *, pc, "14");
|
|
DECL_SC_REG(rb_control_frame_t *, cfp, "15");
|
|
#define USE_MACHINE_REGS 1
|
|
|
|
#else
|
|
register rb_control_frame_t *reg_cfp;
|
|
VALUE *reg_pc;
|
|
#endif
|
|
|
|
#if USE_MACHINE_REGS
|
|
|
|
#undef RESTORE_REGS
|
|
#define RESTORE_REGS() \
|
|
{ \
|
|
REG_CFP = th->cfp; \
|
|
reg_pc = reg_cfp->pc; \
|
|
}
|
|
|
|
#undef REG_PC
|
|
#define REG_PC reg_pc
|
|
#undef GET_PC
|
|
#define GET_PC() (reg_pc)
|
|
#undef SET_PC
|
|
#define SET_PC(x) (reg_cfp->pc = REG_PC = (x))
|
|
#endif
|
|
|
|
#if OPT_TOKEN_THREADED_CODE || OPT_DIRECT_THREADED_CODE
|
|
#include "vmtc.inc"
|
|
if (UNLIKELY(th == 0)) {
|
|
return (VALUE)insns_address_table;
|
|
}
|
|
#endif
|
|
reg_cfp = th->cfp;
|
|
reg_pc = reg_cfp->pc;
|
|
|
|
#if OPT_STACK_CACHING
|
|
reg_a = initial;
|
|
reg_b = 0;
|
|
#endif
|
|
|
|
first:
|
|
INSN_DISPATCH();
|
|
/*****************/
|
|
#include "vm.inc"
|
|
/*****************/
|
|
END_INSNS_DISPATCH();
|
|
|
|
/* unreachable */
|
|
rb_bug("vm_eval: unreachable");
|
|
goto first;
|
|
}
|
|
|
|
const void **
|
|
rb_vm_get_insns_address_table(void)
|
|
{
|
|
return (const void **)vm_exec_core(0, 0);
|
|
}
|
|
|
|
#else /* OPT_CALL_THREADED_CODE */
|
|
|
|
#include "vm.inc"
|
|
#include "vmtc.inc"
|
|
|
|
const void **
|
|
rb_vm_get_insns_address_table(void)
|
|
{
|
|
return (const void **)insns_address_table;
|
|
}
|
|
|
|
static VALUE
|
|
vm_exec_core(rb_thread_t *th, VALUE initial)
|
|
{
|
|
register rb_control_frame_t *reg_cfp = th->cfp;
|
|
|
|
while (1) {
|
|
reg_cfp = ((rb_insn_func_t) (*GET_PC()))(th, reg_cfp);
|
|
|
|
if (UNLIKELY(reg_cfp == 0)) {
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (th->retval != Qundef) {
|
|
VALUE ret = th->retval;
|
|
th->retval = Qundef;
|
|
return ret;
|
|
}
|
|
else {
|
|
VALUE err = th->errinfo;
|
|
th->errinfo = Qnil;
|
|
return err;
|
|
}
|
|
}
|
|
#endif
|