diff options
author | 2023-03-07 01:39:42 +1100 | |
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committer | 2023-03-07 01:39:42 +1100 | |
commit | b5475eb38b8b79a13a0a9e8a6cb68755b84f0c7b (patch) | |
tree | 005b70ffe81cab56d55873ac6ee68725e5ba9d36 /3rdparty/lua/src/lbitlib.c | |
parent | 2102c32d2f3f94e69e3baf60294be3c04ca8b09f (diff) |
Various updates, mostly around Lua:
Compile Lua as C++. When Lua is compiled as C, it uses setjmp/longjmp
for error handling, resulting in failure to unwind intermediate stack
frames. Trying to ensure no objects with non-trivial destructors are in
scope when raising a Lua error is error-prone. In particular,
converting an exception to a Lua error becomes convoluted, and raising a
Lua error from a constructor is effectively impossible.
Updated Lua to 5.4.4 - this includes a brand-new garbage collector
implementation with better performance. The main thing removed is the
deprecated bitlib.
Updated sol2 to version 3.3.0 - this adds support for Lua 5.4 and fixes
a number of issues, including not correctly handling errors when Lua is
built as C++.
Updated LuaFileSystem to version 1.8.0 - this adds support for symbolic
links on Windows, as well as Lua 5.4 compatibility.
Updated LuaSQLite3 to version 0.9.5 - this fixes issues in
multi-threaded environments, as well as Lua 5.4 compatibility.
Fixed double-free after attempting to construct a debugger expression
from Lua with an invalid string, and exposed expression error to Lua in
a better way.
Added warning level print function to Lua.
Fixed saving cheats with shift operators in expressions, although this
code isn't actually used as there's no cheat editor.
Diffstat (limited to '3rdparty/lua/src/lbitlib.c')
-rw-r--r-- | 3rdparty/lua/src/lbitlib.c | 233 |
1 files changed, 0 insertions, 233 deletions
diff --git a/3rdparty/lua/src/lbitlib.c b/3rdparty/lua/src/lbitlib.c deleted file mode 100644 index 1cb1d5b9323..00000000000 --- a/3rdparty/lua/src/lbitlib.c +++ /dev/null @@ -1,233 +0,0 @@ -/* -** $Id: lbitlib.c,v 1.30 2015/11/11 19:08:09 roberto Exp $ -** Standard library for bitwise operations -** See Copyright Notice in lua.h -*/ - -#define lbitlib_c -#define LUA_LIB - -#include "lprefix.h" - - -#include "lua.h" - -#include "lauxlib.h" -#include "lualib.h" - - -#if defined(LUA_COMPAT_BITLIB) /* { */ - - -#define pushunsigned(L,n) lua_pushinteger(L, (lua_Integer)(n)) -#define checkunsigned(L,i) ((lua_Unsigned)luaL_checkinteger(L,i)) - - -/* number of bits to consider in a number */ -#if !defined(LUA_NBITS) -#define LUA_NBITS 32 -#endif - - -/* -** a lua_Unsigned with its first LUA_NBITS bits equal to 1. (Shift must -** be made in two parts to avoid problems when LUA_NBITS is equal to the -** number of bits in a lua_Unsigned.) -*/ -#define ALLONES (~(((~(lua_Unsigned)0) << (LUA_NBITS - 1)) << 1)) - - -/* macro to trim extra bits */ -#define trim(x) ((x) & ALLONES) - - -/* builds a number with 'n' ones (1 <= n <= LUA_NBITS) */ -#define mask(n) (~((ALLONES << 1) << ((n) - 1))) - - - -static lua_Unsigned andaux (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = ~(lua_Unsigned)0; - for (i = 1; i <= n; i++) - r &= checkunsigned(L, i); - return trim(r); -} - - -static int b_and (lua_State *L) { - lua_Unsigned r = andaux(L); - pushunsigned(L, r); - return 1; -} - - -static int b_test (lua_State *L) { - lua_Unsigned r = andaux(L); - lua_pushboolean(L, r != 0); - return 1; -} - - -static int b_or (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = 0; - for (i = 1; i <= n; i++) - r |= checkunsigned(L, i); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_xor (lua_State *L) { - int i, n = lua_gettop(L); - lua_Unsigned r = 0; - for (i = 1; i <= n; i++) - r ^= checkunsigned(L, i); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_not (lua_State *L) { - lua_Unsigned r = ~checkunsigned(L, 1); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_shift (lua_State *L, lua_Unsigned r, lua_Integer i) { - if (i < 0) { /* shift right? */ - i = -i; - r = trim(r); - if (i >= LUA_NBITS) r = 0; - else r >>= i; - } - else { /* shift left */ - if (i >= LUA_NBITS) r = 0; - else r <<= i; - r = trim(r); - } - pushunsigned(L, r); - return 1; -} - - -static int b_lshift (lua_State *L) { - return b_shift(L, checkunsigned(L, 1), luaL_checkinteger(L, 2)); -} - - -static int b_rshift (lua_State *L) { - return b_shift(L, checkunsigned(L, 1), -luaL_checkinteger(L, 2)); -} - - -static int b_arshift (lua_State *L) { - lua_Unsigned r = checkunsigned(L, 1); - lua_Integer i = luaL_checkinteger(L, 2); - if (i < 0 || !(r & ((lua_Unsigned)1 << (LUA_NBITS - 1)))) - return b_shift(L, r, -i); - else { /* arithmetic shift for 'negative' number */ - if (i >= LUA_NBITS) r = ALLONES; - else - r = trim((r >> i) | ~(trim(~(lua_Unsigned)0) >> i)); /* add signal bit */ - pushunsigned(L, r); - return 1; - } -} - - -static int b_rot (lua_State *L, lua_Integer d) { - lua_Unsigned r = checkunsigned(L, 1); - int i = d & (LUA_NBITS - 1); /* i = d % NBITS */ - r = trim(r); - if (i != 0) /* avoid undefined shift of LUA_NBITS when i == 0 */ - r = (r << i) | (r >> (LUA_NBITS - i)); - pushunsigned(L, trim(r)); - return 1; -} - - -static int b_lrot (lua_State *L) { - return b_rot(L, luaL_checkinteger(L, 2)); -} - - -static int b_rrot (lua_State *L) { - return b_rot(L, -luaL_checkinteger(L, 2)); -} - - -/* -** get field and width arguments for field-manipulation functions, -** checking whether they are valid. -** ('luaL_error' called without 'return' to avoid later warnings about -** 'width' being used uninitialized.) -*/ -static int fieldargs (lua_State *L, int farg, int *width) { - lua_Integer f = luaL_checkinteger(L, farg); - lua_Integer w = luaL_optinteger(L, farg + 1, 1); - luaL_argcheck(L, 0 <= f, farg, "field cannot be negative"); - luaL_argcheck(L, 0 < w, farg + 1, "width must be positive"); - if (f + w > LUA_NBITS) - luaL_error(L, "trying to access non-existent bits"); - *width = (int)w; - return (int)f; -} - - -static int b_extract (lua_State *L) { - int w; - lua_Unsigned r = trim(checkunsigned(L, 1)); - int f = fieldargs(L, 2, &w); - r = (r >> f) & mask(w); - pushunsigned(L, r); - return 1; -} - - -static int b_replace (lua_State *L) { - int w; - lua_Unsigned r = trim(checkunsigned(L, 1)); - lua_Unsigned v = trim(checkunsigned(L, 2)); - int f = fieldargs(L, 3, &w); - lua_Unsigned m = mask(w); - r = (r & ~(m << f)) | ((v & m) << f); - pushunsigned(L, r); - return 1; -} - - -static const luaL_Reg bitlib[] = { - {"arshift", b_arshift}, - {"band", b_and}, - {"bnot", b_not}, - {"bor", b_or}, - {"bxor", b_xor}, - {"btest", b_test}, - {"extract", b_extract}, - {"lrotate", b_lrot}, - {"lshift", b_lshift}, - {"replace", b_replace}, - {"rrotate", b_rrot}, - {"rshift", b_rshift}, - {NULL, NULL} -}; - - - -LUAMOD_API int luaopen_bit32 (lua_State *L) { - luaL_newlib(L, bitlib); - return 1; -} - - -#else /* }{ */ - - -LUAMOD_API int luaopen_bit32 (lua_State *L) { - return luaL_error(L, "library 'bit32' has been deprecated"); -} - -#endif /* } */ |