Add LuaJIT 2.0.3.

2026-08-17 19:24:09 +02:00 · 2014-03-30 14:12:24 +02:00
parent 64d3780994
commit 2b5ddc77d7
193 changed files with 113950 additions and 3 deletions
@@ -0,0 +1,140 @@
+/*
+** Math helper functions for assembler VM.
+** Copyright (C) 2005-2014 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#define lj_vmmath_c
+#define LUA_CORE
+
+#include <errno.h>
+#include <math.h>
+
+#include "lj_obj.h"
+#include "lj_ir.h"
+#include "lj_vm.h"
+
+/* -- Helper functions for generated machine code ------------------------- */
+
+#if LJ_TARGET_X86ORX64
+/* Wrapper functions to avoid linker issues on OSX. */
+LJ_FUNCA double lj_vm_sinh(double x) { return sinh(x); }
+LJ_FUNCA double lj_vm_cosh(double x) { return cosh(x); }
+LJ_FUNCA double lj_vm_tanh(double x) { return tanh(x); }
+#endif
+
+#if !LJ_TARGET_X86ORX64
+double lj_vm_foldarith(double x, double y, int op)
+{
+  switch (op) {
+  case IR_ADD - IR_ADD: return x+y; break;
+  case IR_SUB - IR_ADD: return x-y; break;
+  case IR_MUL - IR_ADD: return x*y; break;
+  case IR_DIV - IR_ADD: return x/y; break;
+  case IR_MOD - IR_ADD: return x-lj_vm_floor(x/y)*y; break;
+  case IR_POW - IR_ADD: return pow(x, y); break;
+  case IR_NEG - IR_ADD: return -x; break;
+  case IR_ABS - IR_ADD: return fabs(x); break;
+#if LJ_HASJIT
+  case IR_ATAN2 - IR_ADD: return atan2(x, y); break;
+  case IR_LDEXP - IR_ADD: return ldexp(x, (int)y); break;
+  case IR_MIN - IR_ADD: return x > y ? y : x; break;
+  case IR_MAX - IR_ADD: return x < y ? y : x; break;
+#endif
+  default: return x;
+  }
+}
+#endif
+
+#if LJ_HASJIT
+
+#ifdef LUAJIT_NO_LOG2
+double lj_vm_log2(double a)
+{
+  return log(a) * 1.4426950408889634074;
+}
+#endif
+
+#ifdef LUAJIT_NO_EXP2
+double lj_vm_exp2(double a)
+{
+  return exp(a * 0.6931471805599453);
+}
+#endif
+
+#if !(LJ_TARGET_ARM || LJ_TARGET_PPC)
+int32_t LJ_FASTCALL lj_vm_modi(int32_t a, int32_t b)
+{
+  uint32_t y, ua, ub;
+  lua_assert(b != 0);  /* This must be checked before using this function. */
+  ua = a < 0 ? (uint32_t)-a : (uint32_t)a;
+  ub = b < 0 ? (uint32_t)-b : (uint32_t)b;
+  y = ua % ub;
+  if (y != 0 && (a^b) < 0) y = y - ub;
+  if (((int32_t)y^b) < 0) y = (uint32_t)-(int32_t)y;
+  return (int32_t)y;
+}
+#endif
+
+#if !LJ_TARGET_X86ORX64
+/* Unsigned x^k. */
+static double lj_vm_powui(double x, uint32_t k)
+{
+  double y;
+  lua_assert(k != 0);
+  for (; (k & 1) == 0; k >>= 1) x *= x;
+  y = x;
+  if ((k >>= 1) != 0) {
+    for (;;) {
+      x *= x;
+      if (k == 1) break;
+      if (k & 1) y *= x;
+      k >>= 1;
+    }
+    y *= x;
+  }
+  return y;
+}
+
+/* Signed x^k. */
+double lj_vm_powi(double x, int32_t k)
+{
+  if (k > 1)
+    return lj_vm_powui(x, (uint32_t)k);
+  else if (k == 1)
+    return x;
+  else if (k == 0)
+    return 1.0;
+  else
+    return 1.0 / lj_vm_powui(x, (uint32_t)-k);
+}
+
+/* Computes fpm(x) for extended math functions. */
+double lj_vm_foldfpm(double x, int fpm)
+{
+  switch (fpm) {
+  case IRFPM_FLOOR: return lj_vm_floor(x);
+  case IRFPM_CEIL: return lj_vm_ceil(x);
+  case IRFPM_TRUNC: return lj_vm_trunc(x);
+  case IRFPM_SQRT: return sqrt(x);
+  case IRFPM_EXP: return exp(x);
+  case IRFPM_EXP2: return lj_vm_exp2(x);
+  case IRFPM_LOG: return log(x);
+  case IRFPM_LOG2: return lj_vm_log2(x);
+  case IRFPM_LOG10: return log10(x);
+  case IRFPM_SIN: return sin(x);
+  case IRFPM_COS: return cos(x);
+  case IRFPM_TAN: return tan(x);
+  default: lua_assert(0);
+  }
+  return 0;
+}
+#endif
+
+#if LJ_HASFFI
+int lj_vm_errno(void)
+{
+  return errno;
+}
+#endif
+
+#endif