From 637177eb1397ef1800027bccd50dbdc1af29a15b Mon Sep 17 00:00:00 2001 From: David Walter Seikel Date: Mon, 13 Jan 2014 21:08:31 +1000 Subject: Remove LuaJIT source, we can use packaged LuaJIT 2.0 release now. Also some cleanups related to the other library removals. --- libraries/luajit-2.0/src/lj_clib.c | 389 ------------------------------------- 1 file changed, 389 deletions(-) delete mode 100644 libraries/luajit-2.0/src/lj_clib.c (limited to 'libraries/luajit-2.0/src/lj_clib.c') diff --git a/libraries/luajit-2.0/src/lj_clib.c b/libraries/luajit-2.0/src/lj_clib.c deleted file mode 100644 index 68398cf..0000000 --- a/libraries/luajit-2.0/src/lj_clib.c +++ /dev/null @@ -1,389 +0,0 @@ -/* -** FFI C library loader. -** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h -*/ - -#include "lj_obj.h" - -#if LJ_HASFFI - -#include "lj_gc.h" -#include "lj_err.h" -#include "lj_tab.h" -#include "lj_str.h" -#include "lj_udata.h" -#include "lj_ctype.h" -#include "lj_cconv.h" -#include "lj_cdata.h" -#include "lj_clib.h" - -/* -- OS-specific functions ----------------------------------------------- */ - -#if LJ_TARGET_DLOPEN - -#include -#include - -#if defined(RTLD_DEFAULT) -#define CLIB_DEFHANDLE RTLD_DEFAULT -#elif LJ_TARGET_OSX || LJ_TARGET_BSD -#define CLIB_DEFHANDLE ((void *)(intptr_t)-2) -#else -#define CLIB_DEFHANDLE NULL -#endif - -LJ_NORET LJ_NOINLINE static void clib_error_(lua_State *L) -{ - lj_err_callermsg(L, dlerror()); -} - -#define clib_error(L, fmt, name) clib_error_(L) - -#if LJ_TARGET_OSX -#define CLIB_SOEXT "%s.dylib" -#else -#define CLIB_SOEXT "%s.so" -#endif - -static const char *clib_extname(lua_State *L, const char *name) -{ - if (!strchr(name, '/')) { - if (!strchr(name, '.')) { - name = lj_str_pushf(L, CLIB_SOEXT, name); - L->top--; - } - if (!(name[0] == 'l' && name[1] == 'i' && name[2] == 'b')) { - name = lj_str_pushf(L, "lib%s", name); - L->top--; - } - } - return name; -} - -/* Check for a recognized ld script line. */ -static const char *clib_check_lds(lua_State *L, const char *buf) -{ - char *p, *e; - if ((!strncmp(buf, "GROUP", 5) || !strncmp(buf, "INPUT", 5)) && - (p = strchr(buf, '('))) { - while (*++p == ' ') ; - for (e = p; *e && *e != ' ' && *e != ')'; e++) ; - return strdata(lj_str_new(L, p, e-p)); - } - return NULL; -} - -/* Quick and dirty solution to resolve shared library name from ld script. */ -static const char *clib_resolve_lds(lua_State *L, const char *name) -{ - FILE *fp = fopen(name, "r"); - const char *p = NULL; - if (fp) { - char buf[256]; - if (fgets(buf, sizeof(buf), fp)) { - if (!strncmp(buf, "/* GNU ld script", 16)) { /* ld script magic? */ - while (fgets(buf, sizeof(buf), fp)) { /* Check all lines. */ - p = clib_check_lds(L, buf); - if (p) break; - } - } else { /* Otherwise check only the first line. */ - p = clib_check_lds(L, buf); - } - } - fclose(fp); - } - return p; -} - -static void *clib_loadlib(lua_State *L, const char *name, int global) -{ - void *h = dlopen(clib_extname(L, name), - RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL)); - if (!h) { - const char *e, *err = dlerror(); - if (*err == '/' && (e = strchr(err, ':')) && - (name = clib_resolve_lds(L, strdata(lj_str_new(L, err, e-err))))) { - h = dlopen(name, RTLD_LAZY | (global?RTLD_GLOBAL:RTLD_LOCAL)); - if (h) return h; - err = dlerror(); - } - lj_err_callermsg(L, err); - } - return h; -} - -static void clib_unloadlib(CLibrary *cl) -{ - if (!cl->handle && cl->handle != CLIB_DEFHANDLE) - dlclose(cl->handle); -} - -static void *clib_getsym(CLibrary *cl, const char *name) -{ - void *p = dlsym(cl->handle, name); - return p; -} - -#elif LJ_TARGET_WINDOWS - -#define WIN32_LEAN_AND_MEAN -#ifndef WINVER -#define WINVER 0x0500 -#endif -#include - -#ifndef GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS -#define GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS 4 -#define GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT 2 -BOOL WINAPI GetModuleHandleExA(DWORD, LPCSTR, HMODULE*); -#endif - -#define CLIB_DEFHANDLE ((void *)-1) - -/* Default libraries. */ -enum { - CLIB_HANDLE_EXE, - CLIB_HANDLE_DLL, - CLIB_HANDLE_CRT, - CLIB_HANDLE_KERNEL32, - CLIB_HANDLE_USER32, - CLIB_HANDLE_GDI32, - CLIB_HANDLE_MAX -}; - -static void *clib_def_handle[CLIB_HANDLE_MAX]; - -LJ_NORET LJ_NOINLINE static void clib_error(lua_State *L, const char *fmt, - const char *name) -{ - DWORD err = GetLastError(); - char buf[128]; - if (!FormatMessageA(FORMAT_MESSAGE_IGNORE_INSERTS|FORMAT_MESSAGE_FROM_SYSTEM, - NULL, err, 0, buf, sizeof(buf), NULL)) - buf[0] = '\0'; - lj_err_callermsg(L, lj_str_pushf(L, fmt, name, buf)); -} - -static int clib_needext(const char *s) -{ - while (*s) { - if (*s == '/' || *s == '\\' || *s == '.') return 0; - s++; - } - return 1; -} - -static const char *clib_extname(lua_State *L, const char *name) -{ - if (clib_needext(name)) { - name = lj_str_pushf(L, "%s.dll", name); - L->top--; - } - return name; -} - -static void *clib_loadlib(lua_State *L, const char *name, int global) -{ - DWORD oldwerr = GetLastError(); - void *h = (void *)LoadLibraryA(clib_extname(L, name)); - if (!h) clib_error(L, "cannot load module " LUA_QS ": %s", name); - SetLastError(oldwerr); - UNUSED(global); - return h; -} - -static void clib_unloadlib(CLibrary *cl) -{ - if (cl->handle == CLIB_DEFHANDLE) { - MSize i; - for (i = 0; i < CLIB_HANDLE_MAX; i++) { - void *h = clib_def_handle[i]; - if (h) { - clib_def_handle[i] = NULL; - FreeLibrary((HINSTANCE)h); - } - } - } else if (!cl->handle) { - FreeLibrary((HINSTANCE)cl->handle); - } -} - -static void *clib_getsym(CLibrary *cl, const char *name) -{ - void *p = NULL; - DWORD oldwerr = GetLastError(); - if (cl->handle == CLIB_DEFHANDLE) { /* Search default libraries. */ - MSize i; - for (i = 0; i < CLIB_HANDLE_MAX; i++) { - HINSTANCE h = (HINSTANCE)clib_def_handle[i]; - if (!(void *)h) { /* Resolve default library handles (once). */ - switch (i) { - case CLIB_HANDLE_EXE: GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, NULL, &h); break; - case CLIB_HANDLE_DLL: - GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS|GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, - (const char *)clib_def_handle, &h); - break; - case CLIB_HANDLE_CRT: - GetModuleHandleExA(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS|GET_MODULE_HANDLE_EX_FLAG_UNCHANGED_REFCOUNT, - (const char *)&_fmode, &h); - break; - case CLIB_HANDLE_KERNEL32: h = LoadLibraryA("kernel32.dll"); break; - case CLIB_HANDLE_USER32: h = LoadLibraryA("user32.dll"); break; - case CLIB_HANDLE_GDI32: h = LoadLibraryA("gdi32.dll"); break; - } - if (!h) continue; - clib_def_handle[i] = (void *)h; - } - p = (void *)GetProcAddress(h, name); - if (p) break; - } - } else { - p = (void *)GetProcAddress((HINSTANCE)cl->handle, name); - } - SetLastError(oldwerr); - return p; -} - -#else - -#define CLIB_DEFHANDLE NULL - -LJ_NORET LJ_NOINLINE static void clib_error(lua_State *L, const char *fmt, - const char *name) -{ - lj_err_callermsg(L, lj_str_pushf(L, fmt, name, "no support for this OS")); -} - -static void *clib_loadlib(lua_State *L, const char *name, int global) -{ - lj_err_callermsg(L, "no support for loading dynamic libraries for this OS"); - UNUSED(name); UNUSED(global); - return NULL; -} - -static void clib_unloadlib(CLibrary *cl) -{ - UNUSED(cl); -} - -static void *clib_getsym(CLibrary *cl, const char *name) -{ - UNUSED(cl); UNUSED(name); - return NULL; -} - -#endif - -/* -- C library indexing -------------------------------------------------- */ - -#if LJ_TARGET_X86 && LJ_ABI_WIN -/* Compute argument size for fastcall/stdcall functions. */ -static CTSize clib_func_argsize(CTState *cts, CType *ct) -{ - CTSize n = 0; - while (ct->sib) { - CType *d; - ct = ctype_get(cts, ct->sib); - lua_assert(ctype_isfield(ct->info)); - d = ctype_rawchild(cts, ct); - n += ((d->size + 3) & ~3); - } - return n; -} -#endif - -/* Get redirected or mangled external symbol. */ -static const char *clib_extsym(CTState *cts, CType *ct, GCstr *name) -{ - if (ct->sib) { - CType *ctf = ctype_get(cts, ct->sib); - if (ctype_isxattrib(ctf->info, CTA_REDIR)) - return strdata(gco2str(gcref(ctf->name))); - } - return strdata(name); -} - -/* Index a C library by name. */ -TValue *lj_clib_index(lua_State *L, CLibrary *cl, GCstr *name) -{ - TValue *tv = lj_tab_setstr(L, cl->cache, name); - if (LJ_UNLIKELY(tvisnil(tv))) { - CTState *cts = ctype_cts(L); - CType *ct; - CTypeID id = lj_ctype_getname(cts, &ct, name, CLNS_INDEX); - if (!id) - lj_err_callerv(L, LJ_ERR_FFI_NODECL, strdata(name)); - if (ctype_isconstval(ct->info)) { - CType *ctt = ctype_child(cts, ct); - lua_assert(ctype_isinteger(ctt->info) && ctt->size <= 4); - if ((ctt->info & CTF_UNSIGNED) && (int32_t)ct->size < 0) - setnumV(tv, (lua_Number)(uint32_t)ct->size); - else - setintV(tv, (int32_t)ct->size); - } else { - const char *sym = clib_extsym(cts, ct, name); - void *p = clib_getsym(cl, sym); - GCcdata *cd; - lua_assert(ctype_isfunc(ct->info) || ctype_isextern(ct->info)); -#if LJ_TARGET_X86 && LJ_ABI_WIN - /* Retry with decorated name for fastcall/stdcall functions. */ - if (!p && ctype_isfunc(ct->info)) { - CTInfo cconv = ctype_cconv(ct->info); - if (cconv == CTCC_FASTCALL || cconv == CTCC_STDCALL) { - CTSize sz = clib_func_argsize(cts, ct); - sym = lj_str_pushf(L, cconv == CTCC_FASTCALL ? "@%s@%d" : "_%s@%d", - sym, sz); - L->top--; - p = clib_getsym(cl, sym); - } - } -#endif - if (!p) - clib_error(L, "cannot resolve symbol " LUA_QS ": %s", strdata(name)); - cd = lj_cdata_new(cts, id, CTSIZE_PTR); - *(void **)cdataptr(cd) = p; - setcdataV(L, tv, cd); - } - } - return tv; -} - -/* -- C library management ------------------------------------------------ */ - -/* Create a new CLibrary object and push it on the stack. */ -static CLibrary *clib_new(lua_State *L, GCtab *mt) -{ - GCtab *t = lj_tab_new(L, 0, 0); - GCudata *ud = lj_udata_new(L, sizeof(CLibrary), t); - CLibrary *cl = (CLibrary *)uddata(ud); - cl->cache = t; - ud->udtype = UDTYPE_FFI_CLIB; - /* NOBARRIER: The GCudata is new (marked white). */ - setgcref(ud->metatable, obj2gco(mt)); - setudataV(L, L->top++, ud); - return cl; -} - -/* Load a C library. */ -void lj_clib_load(lua_State *L, GCtab *mt, GCstr *name, int global) -{ - void *handle = clib_loadlib(L, strdata(name), global); - CLibrary *cl = clib_new(L, mt); - cl->handle = handle; -} - -/* Unload a C library. */ -void lj_clib_unload(CLibrary *cl) -{ - clib_unloadlib(cl); - cl->handle = NULL; -} - -/* Create the default C library object. */ -void lj_clib_default(lua_State *L, GCtab *mt) -{ - CLibrary *cl = clib_new(L, mt); - cl->handle = CLIB_DEFHANDLE; -} - -#endif -- cgit v1.1