mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-12-12 20:16:16 +02:00
187 lines
6.7 KiB
Diff
187 lines
6.7 KiB
Diff
|
Index: lua-5.1.4/src/Makefile
|
||
|
|
===================================================================
|
||
|
|
--- lua-5.1.4.orig/src/Makefile 2008-09-25 13:08:31.000000000 +0200
|
||
|
|
+++ lua-5.1.4/src/Makefile 2008-09-25 13:08:43.000000000 +0200
|
||
|
|
@@ -29,7 +29,7 @@
|
||
|
|
lobject.o lopcodes.o lparser.o lstate.o lstring.o ltable.o ltm.o \
|
||
|
|
lundump.o lvm.o lzio.o lnum.o
|
||
|
|
LIB_O= lauxlib.o lbaselib.o ldblib.o liolib.o lmathlib.o loslib.o ltablib.o \
|
||
|
|
- lstrlib.o loadlib.o linit.o lposix.o
|
||
|
|
+ lstrlib.o loadlib.o linit.o lposix.o lbitlib.o
|
||
|
|
|
||
|
|
LUA_T= lua
|
||
|
|
LUA_O= lua.o
|
||
|
|
Index: lua-5.1.4/src/bit_limits.h
|
||
|
|
===================================================================
|
||
|
|
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
||
|
|
+++ lua-5.1.4/src/bit_limits.h 2008-09-25 13:09:16.000000000 +0200
|
||
|
|
@@ -0,0 +1,4 @@
|
||
|
|
+#define BITLIB_FLOAT_BITS 53
|
||
|
|
+#define BITLIB_FLOAT_MAX 0xfffffffffffffL
|
||
|
|
+#define BITLIB_FLOAT_MIN (-0x10000000000000L)
|
||
|
|
+#define BITLIB_FLOAT_UMAX 0x1fffffffffffffUL
|
||
|
|
Index: lua-5.1.4/src/lbitlib.c
|
||
|
|
===================================================================
|
||
|
|
--- /dev/null 1970-01-01 00:00:00.000000000 +0000
|
||
|
|
+++ lua-5.1.4/src/lbitlib.c 2008-09-25 13:05:15.000000000 +0200
|
||
|
|
@@ -0,0 +1,133 @@
|
||
|
|
+/* Bitwise operations library */
|
||
|
|
+/* (c) Reuben Thomas 2000-2008 */
|
||
|
|
+/* See README for license */
|
||
|
|
+
|
||
|
|
+#include "lua.h"
|
||
|
|
+#include "lauxlib.h"
|
||
|
|
+#include "limits.h"
|
||
|
|
+
|
||
|
|
+#include "bit_limits.h"
|
||
|
|
+
|
||
|
|
+
|
||
|
|
+/* FIXME: Assume lua_Integer is int */
|
||
|
|
+#define LUA_INTEGER_MAX INT_MAX
|
||
|
|
+#define LUA_INTEGER_MIN INT_MIN
|
||
|
|
+
|
||
|
|
+/* FIXME: Assume uint is an unsigned lua_Integer */
|
||
|
|
+typedef unsigned int lua_UInteger;
|
||
|
|
+#define LUA_UINTEGER_MAX UINT_MAX
|
||
|
|
+
|
||
|
|
+
|
||
|
|
+/* Bit type size and limits */
|
||
|
|
+
|
||
|
|
+#define BIT_BITS \
|
||
|
|
+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? \
|
||
|
|
+ BITLIB_FLOAT_BITS : (CHAR_BIT * sizeof(lua_Integer)))
|
||
|
|
+
|
||
|
|
+/* This code may give warnings if BITLIB_FLOAT_* are too big to fit in
|
||
|
|
+ long, but that doesn't matter since in that case they won't be
|
||
|
|
+ used. */
|
||
|
|
+#define BIT_MAX \
|
||
|
|
+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MAX : LUA_INTEGER_MAX)
|
||
|
|
+
|
||
|
|
+#define BIT_MIN \
|
||
|
|
+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_MIN : LUA_INTEGER_MIN)
|
||
|
|
+
|
||
|
|
+#define BIT_UMAX \
|
||
|
|
+ (CHAR_BIT * sizeof(lua_Integer) > BITLIB_FLOAT_BITS ? BITLIB_FLOAT_UMAX : LUA_UINTEGER_MAX)
|
||
|
|
+
|
||
|
|
+
|
||
|
|
+/* Define TOBIT to get a bit value */
|
||
|
|
+#ifdef BUILTIN_CAST
|
||
|
|
+#define
|
||
|
|
+#define TOBIT(L, n, res) \
|
||
|
|
+ ((void)(res), luaL_checkinteger((L), (n)))
|
||
|
|
+#else
|
||
|
|
+#include <stdint.h>
|
||
|
|
+#include <math.h>
|
||
|
|
+
|
||
|
|
+/* FIXME: Assume lua_Number fits in a double (use of fmod). */
|
||
|
|
+#define TOBIT(L, n, res) \
|
||
|
|
+ ((lua_Integer)(((res) = fmod(luaL_checknumber(L, (n)), (double)BIT_UMAX + 1.0)), \
|
||
|
|
+ (res) > BIT_MAX ? ((res) -= (double)BIT_UMAX, (res) -= 1) : \
|
||
|
|
+ ((res) < BIT_MIN ? ((res) += (double)BIT_UMAX, (res) += 1) : (res))))
|
||
|
|
+#endif
|
||
|
|
+
|
||
|
|
+
|
||
|
|
+#define BIT_TRUNCATE(i) \
|
||
|
|
+ ((i) & BIT_UMAX)
|
||
|
|
+
|
||
|
|
+
|
||
|
|
+/* Operations
|
||
|
|
+
|
||
|
|
+ The macros MONADIC and VARIADIC only deal with bitwise operations.
|
||
|
|
+
|
||
|
|
+ LOGICAL_SHIFT truncates its left-hand operand before shifting so
|
||
|
|
+ that any extra bits at the most-significant end are not shifted
|
||
|
|
+ into the result.
|
||
|
|
+
|
||
|
|
+ ARITHMETIC_SHIFT does not truncate its left-hand operand, so that
|
||
|
|
+ the sign bits are not removed and right shift work properly.
|
||
|
|
+ */
|
||
|
|
+
|
||
|
|
+#define MONADIC(name, op) \
|
||
|
|
+ static int bit_ ## name(lua_State *L) { \
|
||
|
|
+ lua_Number f; \
|
||
|
|
+ lua_pushinteger(L, BIT_TRUNCATE(op TOBIT(L, 1, f))); \
|
||
|
|
+ return 1; \
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+#define VARIADIC(name, op) \
|
||
|
|
+ static int bit_ ## name(lua_State *L) { \
|
||
|
|
+ lua_Number f; \
|
||
|
|
+ int n = lua_gettop(L), i; \
|
||
|
|
+ lua_Integer w = TOBIT(L, 1, f); \
|
||
|
|
+ for (i = 2; i <= n; i++) \
|
||
|
|
+ w op TOBIT(L, i, f); \
|
||
|
|
+ lua_pushinteger(L, BIT_TRUNCATE(w)); \
|
||
|
|
+ return 1; \
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+#define LOGICAL_SHIFT(name, op) \
|
||
|
|
+ static int bit_ ## name(lua_State *L) { \
|
||
|
|
+ lua_Number f; \
|
||
|
|
+ lua_pushinteger(L, BIT_TRUNCATE(BIT_TRUNCATE((lua_UInteger)TOBIT(L, 1, f)) op \
|
||
|
|
+ (unsigned)luaL_checknumber(L, 2))); \
|
||
|
|
+ return 1; \
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+#define ARITHMETIC_SHIFT(name, op) \
|
||
|
|
+ static int bit_ ## name(lua_State *L) { \
|
||
|
|
+ lua_Number f; \
|
||
|
|
+ lua_pushinteger(L, BIT_TRUNCATE((lua_Integer)TOBIT(L, 1, f) op \
|
||
|
|
+ (unsigned)luaL_checknumber(L, 2))); \
|
||
|
|
+ return 1; \
|
||
|
|
+ }
|
||
|
|
+
|
||
|
|
+MONADIC(cast, +)
|
||
|
|
+MONADIC(bnot, ~)
|
||
|
|
+VARIADIC(band, &=)
|
||
|
|
+VARIADIC(bor, |=)
|
||
|
|
+VARIADIC(bxor, ^=)
|
||
|
|
+ARITHMETIC_SHIFT(lshift, <<)
|
||
|
|
+LOGICAL_SHIFT(rshift, >>)
|
||
|
|
+ARITHMETIC_SHIFT(arshift, >>)
|
||
|
|
+
|
||
|
|
+static const struct luaL_reg bitlib[] = {
|
||
|
|
+ {"cast", bit_cast},
|
||
|
|
+ {"bnot", bit_bnot},
|
||
|
|
+ {"band", bit_band},
|
||
|
|
+ {"bor", bit_bor},
|
||
|
|
+ {"bxor", bit_bxor},
|
||
|
|
+ {"lshift", bit_lshift},
|
||
|
|
+ {"rshift", bit_rshift},
|
||
|
|
+ {"arshift", bit_arshift},
|
||
|
|
+ {NULL, NULL}
|
||
|
|
+};
|
||
|
|
+
|
||
|
|
+LUALIB_API int luaopen_bit (lua_State *L) {
|
||
|
|
+ luaL_register(L, "bit", bitlib);
|
||
|
|
+ lua_pushnumber(L, BIT_BITS);
|
||
|
|
+ lua_setfield(L, -2, "bits");
|
||
|
|
+ return 1;
|
||
|
|
+}
|
||
|
|
Index: lua-5.1.4/src/linit.c
|
||
|
|
===================================================================
|
||
|
|
--- lua-5.1.4.orig/src/linit.c 2008-09-25 13:08:11.000000000 +0200
|
||
|
|
+++ lua-5.1.4/src/linit.c 2008-09-25 13:08:27.000000000 +0200
|
||
|
|
@@ -24,6 +24,7 @@
|
||
|
|
{LUA_MATHLIBNAME, luaopen_math},
|
||
|
|
{LUA_DBLIBNAME, luaopen_debug},
|
||
|
|
{LUA_POSIXLIBNAME, luaopen_posix},
|
||
|
|
+ {LUA_BITLIBNAME, luaopen_bit},
|
||
|
|
{NULL, NULL}
|
||
|
|
};
|
||
|
|
|
||
|
|
Index: lua-5.1.4/src/lualib.h
|
||
|
|
===================================================================
|
||
|
|
--- lua-5.1.4.orig/src/lualib.h 2008-09-25 13:07:29.000000000 +0200
|
||
|
|
+++ lua-5.1.4/src/lualib.h 2008-09-25 13:08:06.000000000 +0200
|
||
|
|
@@ -42,6 +42,9 @@
|
||
|
|
#define LUA_POSIXLIBNAME "posix"
|
||
|
|
LUALIB_API int (luaopen_posix) (lua_State *L);
|
||
|
|
|
||
|
|
+#define LUA_BITLIBNAME "bit"
|
||
|
|
+LUALIB_API int (luaopen_bit) (lua_State *L);
|
||
|
|
+
|
||
|
|
|
||
|
|
/* open all previous libraries */
|
||
|
|
LUALIB_API void (luaL_openlibs) (lua_State *L);
|