diff options
Diffstat (limited to 'mesalib/src/mapi/mapi/stub.c')
-rw-r--r-- | mesalib/src/mapi/mapi/stub.c | 414 |
1 files changed, 207 insertions, 207 deletions
diff --git a/mesalib/src/mapi/mapi/stub.c b/mesalib/src/mapi/mapi/stub.c index 8d9eb4c8b..99b475a3b 100644 --- a/mesalib/src/mapi/mapi/stub.c +++ b/mesalib/src/mapi/mapi/stub.c @@ -1,207 +1,207 @@ -/*
- * Mesa 3-D graphics library
- * Version: 7.9
- *
- * Copyright (C) 2010 LunarG Inc.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sublicense,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice shall be included
- * in all copies or substantial portions of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- *
- * Authors:
- * Chia-I Wu <olv@lunarg.com>
- */
-
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-
-#include "u_current.h"
-#include "u_thread.h"
-#include "entry.h"
-#include "stub.h"
-#include "table.h"
-
-#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0]))
-
-struct mapi_stub {
- const void *name;
- int slot;
- mapi_func addr;
-};
-
-/* define public_string_pool and public_stubs */
-#define MAPI_TMP_PUBLIC_STUBS
-#include "mapi_tmp.h"
-
-static struct mapi_stub dynamic_stubs[MAPI_TABLE_NUM_DYNAMIC];
-static int num_dynamic_stubs;
-static int next_dynamic_slot = MAPI_TABLE_NUM_STATIC;
-
-void
-stub_init_once(void)
-{
-#ifdef PTHREADS
- static pthread_once_t once = PTHREAD_ONCE_INIT;
- pthread_once(&once, entry_patch_public);
-#else
- static int first = 1;
- if (first) {
- first = 0;
- entry_patch_public();
- }
-#endif
-}
-
-static int
-stub_compare(const void *key, const void *elem)
-{
- const char *name = (const char *) key;
- const struct mapi_stub *stub = (const struct mapi_stub *) elem;
- const char *stub_name;
-
- stub_name = &public_string_pool[(unsigned long) stub->name];
-
- return strcmp(name, stub_name);
-}
-
-/**
- * Return the public stub with the given name.
- */
-const struct mapi_stub *
-stub_find_public(const char *name)
-{
- return (const struct mapi_stub *) bsearch(name, public_stubs,
- ARRAY_SIZE(public_stubs), sizeof(public_stubs[0]), stub_compare);
-}
-
-/**
- * Add a dynamic stub.
- */
-static struct mapi_stub *
-stub_add_dynamic(const char *name)
-{
- struct mapi_stub *stub;
- int idx;
-
- idx = num_dynamic_stubs;
- /* minus 1 to make sure we can never reach the last slot */
- if (idx >= MAPI_TABLE_NUM_DYNAMIC - 1)
- return NULL;
-
- stub = &dynamic_stubs[idx];
-
- /* dispatch to the last slot, which is reserved for no-op */
- stub->addr = entry_generate(
- MAPI_TABLE_NUM_STATIC + MAPI_TABLE_NUM_DYNAMIC - 1);
- if (!stub->addr)
- return NULL;
-
- stub->name = (const void *) name;
- /* to be fixed later */
- stub->slot = -1;
-
- num_dynamic_stubs = idx + 1;
-
- return stub;
-}
-
-/**
- * Return the dynamic stub with the given name. If no such stub exists and
- * generate is true, a new stub is generated.
- */
-struct mapi_stub *
-stub_find_dynamic(const char *name, int generate)
-{
- u_mutex_declare_static(dynamic_mutex);
- struct mapi_stub *stub = NULL;
- int count, i;
-
- u_mutex_lock(dynamic_mutex);
-
- if (generate)
- assert(!stub_find_public(name));
-
- count = num_dynamic_stubs;
- for (i = 0; i < count; i++) {
- if (strcmp(name, (const char *) dynamic_stubs[i].name) == 0) {
- stub = &dynamic_stubs[i];
- break;
- }
- }
-
- /* generate a dynamic stub */
- if (generate && !stub)
- stub = stub_add_dynamic(name);
-
- u_mutex_unlock(dynamic_mutex);
-
- return stub;
-}
-
-void
-stub_fix_dynamic(struct mapi_stub *stub, const struct mapi_stub *alias)
-{
- int slot;
-
- if (stub->slot >= 0)
- return;
-
- if (alias)
- slot = alias->slot;
- else
- slot = next_dynamic_slot++;
-
- entry_patch(stub->addr, slot);
- stub->slot = slot;
-}
-
-/**
- * Return the name of a stub.
- */
-const char *
-stub_get_name(const struct mapi_stub *stub)
-{
- const char *name;
-
- if (stub >= public_stubs &&
- stub < public_stubs + ARRAY_SIZE(public_stubs))
- name = &public_string_pool[(unsigned long) stub->name];
- else
- name = (const char *) stub->name;
-
- return name;
-}
-
-/**
- * Return the slot of a stub.
- */
-int
-stub_get_slot(const struct mapi_stub *stub)
-{
- return stub->slot;
-}
-
-/**
- * Return the address of a stub.
- */
-mapi_func
-stub_get_addr(const struct mapi_stub *stub)
-{
- assert(stub->addr || (unsigned int) stub->slot < MAPI_TABLE_NUM_STATIC);
- return (stub->addr) ? stub->addr : entry_get_public(stub->slot);
-}
+/* + * Mesa 3-D graphics library + * Version: 7.9 + * + * Copyright (C) 2010 LunarG Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included + * in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER + * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING + * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER + * DEALINGS IN THE SOFTWARE. + * + * Authors: + * Chia-I Wu <olv@lunarg.com> + */ + +#include <stdlib.h> +#include <string.h> +#include <assert.h> + +#include "u_current.h" +#include "u_thread.h" +#include "entry.h" +#include "stub.h" +#include "table.h" + +#define ARRAY_SIZE(x) (sizeof(x)/sizeof((x)[0])) + +struct mapi_stub { + const void *name; + int slot; + mapi_func addr; +}; + +/* define public_string_pool and public_stubs */ +#define MAPI_TMP_PUBLIC_STUBS +#include "mapi_tmp.h" + +static struct mapi_stub dynamic_stubs[MAPI_TABLE_NUM_DYNAMIC]; +static int num_dynamic_stubs; +static int next_dynamic_slot = MAPI_TABLE_NUM_STATIC; + +void +stub_init_once(void) +{ +#ifdef PTHREADS + static pthread_once_t once = PTHREAD_ONCE_INIT; + pthread_once(&once, entry_patch_public); +#else + static int first = 1; + if (first) { + first = 0; + entry_patch_public(); + } +#endif +} + +static int +stub_compare(const void *key, const void *elem) +{ + const char *name = (const char *) key; + const struct mapi_stub *stub = (const struct mapi_stub *) elem; + const char *stub_name; + + stub_name = &public_string_pool[(unsigned long) stub->name]; + + return strcmp(name, stub_name); +} + +/** + * Return the public stub with the given name. + */ +const struct mapi_stub * +stub_find_public(const char *name) +{ + return (const struct mapi_stub *) bsearch(name, public_stubs, + ARRAY_SIZE(public_stubs), sizeof(public_stubs[0]), stub_compare); +} + +/** + * Add a dynamic stub. + */ +static struct mapi_stub * +stub_add_dynamic(const char *name) +{ + struct mapi_stub *stub; + int idx; + + idx = num_dynamic_stubs; + /* minus 1 to make sure we can never reach the last slot */ + if (idx >= MAPI_TABLE_NUM_DYNAMIC - 1) + return NULL; + + stub = &dynamic_stubs[idx]; + + /* dispatch to the last slot, which is reserved for no-op */ + stub->addr = entry_generate( + MAPI_TABLE_NUM_STATIC + MAPI_TABLE_NUM_DYNAMIC - 1); + if (!stub->addr) + return NULL; + + stub->name = (const void *) name; + /* to be fixed later */ + stub->slot = -1; + + num_dynamic_stubs = idx + 1; + + return stub; +} + +/** + * Return the dynamic stub with the given name. If no such stub exists and + * generate is true, a new stub is generated. + */ +struct mapi_stub * +stub_find_dynamic(const char *name, int generate) +{ + u_mutex_declare_static(dynamic_mutex); + struct mapi_stub *stub = NULL; + int count, i; + + u_mutex_lock(dynamic_mutex); + + if (generate) + assert(!stub_find_public(name)); + + count = num_dynamic_stubs; + for (i = 0; i < count; i++) { + if (strcmp(name, (const char *) dynamic_stubs[i].name) == 0) { + stub = &dynamic_stubs[i]; + break; + } + } + + /* generate a dynamic stub */ + if (generate && !stub) + stub = stub_add_dynamic(name); + + u_mutex_unlock(dynamic_mutex); + + return stub; +} + +void +stub_fix_dynamic(struct mapi_stub *stub, const struct mapi_stub *alias) +{ + int slot; + + if (stub->slot >= 0) + return; + + if (alias) + slot = alias->slot; + else + slot = next_dynamic_slot++; + + entry_patch(stub->addr, slot); + stub->slot = slot; +} + +/** + * Return the name of a stub. + */ +const char * +stub_get_name(const struct mapi_stub *stub) +{ + const char *name; + + if (stub >= public_stubs && + stub < public_stubs + ARRAY_SIZE(public_stubs)) + name = &public_string_pool[(unsigned long) stub->name]; + else + name = (const char *) stub->name; + + return name; +} + +/** + * Return the slot of a stub. + */ +int +stub_get_slot(const struct mapi_stub *stub) +{ + return stub->slot; +} + +/** + * Return the address of a stub. + */ +mapi_func +stub_get_addr(const struct mapi_stub *stub) +{ + assert(stub->addr || (unsigned int) stub->slot < MAPI_TABLE_NUM_STATIC); + return (stub->addr) ? stub->addr : entry_get_public(stub->slot); +} |