diff options
Diffstat (limited to 'sal/osl/android/jni/lo-bootstrap.c')
-rw-r--r-- | sal/osl/android/jni/lo-bootstrap.c | 1041 |
1 files changed, 0 insertions, 1041 deletions
diff --git a/sal/osl/android/jni/lo-bootstrap.c b/sal/osl/android/jni/lo-bootstrap.c deleted file mode 100644 index d9c1e32958ab..000000000000 --- a/sal/osl/android/jni/lo-bootstrap.c +++ /dev/null @@ -1,1041 +0,0 @@ -/* -*- Mode: C; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ -/* - * Version: MPL 1.1 / GPLv3+ / LGPLv3+ - * - * The contents of this file are subject to the Mozilla Public License Version - * 1.1 (the "License"); you may not use this file except in compliance with - * the License or as specified alternatively below. You may obtain a copy of - * the License at http: *www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS IS" basis, - * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License - * for the specific language governing rights and limitations under the - * License. - * - * Major Contributor(s): - * Copyright (C) 2011 Tor Lillqvist <tml@iki.fi> (initial developer) - * Copyright (C) 2011 SUSE Linux http://suse.com (initial developer's employer) - * - * Zip parsing code lifted from Mozilla's other-licenses/android/APKOpen.cpp, - * by Michael Wu <mwu@mozilla.com>. - * - * All Rights Reserved. - * - * For minor contributions see the git repository. - * - * Alternatively, the contents of this file may be used under the terms of - * either the GNU General Public License Version 3 or later (the "GPLv3+"), or - * the GNU Lesser General Public License Version 3 or later (the "LGPLv3+"), - * in which case the provisions of the GPLv3+ or the LGPLv3+ are applicable - * instead of those above. - */ - -#include <string.h> -#include <stdlib.h> -#include <stdio.h> -#include <sys/stat.h> - -#include <unistd.h> -#include <fcntl.h> -#include <dlfcn.h> -#include <sys/mman.h> - -#include <jni.h> - -#include <linux/elf.h> - -#include <android/log.h> - -#include "lo-bootstrap.h" - -#include "android_native_app_glue.c" - -#undef LOGI -#undef LOGW - -#define LOGI(...) ((void)__android_log_print(ANDROID_LOG_INFO, "lo-bootstrap", __VA_ARGS__)) -#define LOGW(...) ((void)__android_log_print(ANDROID_LOG_WARN, "lo-bootstrap", __VA_ARGS__)) -#define LOGE(...) ((void)__android_log_print(ANDROID_LOG_ERROR, "lo-bootstrap", __VA_ARGS__)) -#define LOGF(...) ((void)__android_log_print(ANDROID_LOG_FATAL, "lo-bootstrap", __VA_ARGS__)) - -#define ROUND_DOWN(ptr,multiple) (void *)(((unsigned) (ptr)) & ~((multiple)-1)) - -struct engine { - int dummy; -}; - -static struct android_app *app; -static const char **library_locations; -static void *apk_file; -static int apk_file_size; -static int (*lo_main)(int, const char **); -static int lo_main_argc; -static const char **lo_main_argv; -static int sleep_time = 0; - -/* Zip data structures */ - -/* compression methods */ -#define STORE 0 -#define DEFLATE 8 -#define LZMA 14 - -struct local_file_header { - uint32_t signature; - uint16_t min_version; - uint16_t general_flag; - uint16_t compression; - uint16_t lastmod_time; - uint16_t lastmod_date; - uint32_t crc32; - uint32_t compressed_size; - uint32_t uncompressed_size; - uint16_t filename_size; - uint16_t extra_field_size; - char data[0]; -} __attribute__((__packed__)); - -struct cdir_entry { - uint32_t signature; - uint16_t creator_version; - uint16_t min_version; - uint16_t general_flag; - uint16_t compression; - uint16_t lastmod_time; - uint16_t lastmod_date; - uint32_t crc32; - uint32_t compressed_size; - uint32_t uncompressed_size; - uint16_t filename_size; - uint16_t extra_field_size; - uint16_t file_comment_size; - uint16_t disk_num; - uint16_t internal_attr; - uint32_t external_attr; - uint32_t offset; - char data[0]; -} __attribute__((__packed__)); - -#define CDIR_END_SIG 0x06054b50 - -struct cdir_end { - uint32_t signature; - uint16_t disk_num; - uint16_t cdir_disk; - uint16_t disk_entries; - uint16_t cdir_entries; - uint32_t cdir_size; - uint32_t cdir_offset; - uint16_t comment_size; - char comment[0]; -} __attribute__((__packed__)); - -/* End of Zip data structures */ - -static void -engine_handle_cmd(struct android_app* app, - int32_t cmd) -{ - struct engine* engine = (struct engine*)app->userData; - switch (cmd) { - case APP_CMD_SAVE_STATE: - break; - case APP_CMD_INIT_WINDOW: - break; - case APP_CMD_TERM_WINDOW: - break; - case APP_CMD_GAINED_FOCUS: - break; - case APP_CMD_LOST_FOCUS: - break; - } -} - -static char * -read_section(int fd, - Elf32_Shdr *shdr) -{ - char *result; - - result = malloc(shdr->sh_size); - if (lseek(fd, shdr->sh_offset, SEEK_SET) < 0) { - close(fd); - free(result); - return NULL; - } - if (read(fd, result, shdr->sh_size) < shdr->sh_size) { - close(fd); - free(result); - return NULL; - } - - return result; -} - -static void -free_ptrarray(void **pa) -{ - void **rover = pa; - - while (*rover != NULL) - free(*rover++); - - free(pa); -} - -jobjectArray -Java_org_libreoffice_android_Bootstrap_dlneeds(JNIEnv* env, - jobject clazz, - jstring library) -{ - char **needed; - int n_needed; - const jbyte *libName; - jclass String; - jobjectArray result; - - libName = (*env)->GetStringUTFChars(env, library, NULL); - - needed = lo_dlneeds(libName); - - (*env)->ReleaseStringUTFChars(env, library, libName); - - if (needed == NULL) - return NULL; - - n_needed = 0; - while (needed[n_needed] != NULL) - n_needed++; - - /* Allocate return value */ - - String = (*env)->FindClass(env, "java/lang/String"); - if (String == NULL) { - LOGE("Could not find the String class"); - free_ptrarray((void **) needed); - return NULL; - } - - result = (*env)->NewObjectArray(env, n_needed, String, NULL); - if (result == NULL) { - LOGE("Could not create the String array"); - free_ptrarray((void **) needed); - return NULL; - } - - for (n_needed = 0; needed[n_needed] != NULL; n_needed++) - (*env)->SetObjectArrayElement(env, result, n_needed, (*env)->NewStringUTF(env, needed[n_needed])); - - free_ptrarray((void **) needed); - - return result; -} - -jint -Java_org_libreoffice_android_Bootstrap_dlopen(JNIEnv* env, - jobject clazz, - jstring library) -{ - const jbyte *libName = (*env)->GetStringUTFChars(env, library, NULL); - void *p = lo_dlopen (libName); - - (*env)->ReleaseStringUTFChars(env, library, libName); - - return (jint) p; -} - -jint -Java_org_libreoffice_android_Bootstrap_dlsym(JNIEnv* env, - jobject clazz, - jint handle, - jstring symbol) -{ - const jbyte *symName = (*env)->GetStringUTFChars(env, symbol, NULL); - void *p = lo_dlsym ((void *) handle, symName); - - (*env)->ReleaseStringUTFChars(env, symbol, symName); - - return (jint) p; -} - -jint -Java_org_libreoffice_android_Bootstrap_dlcall(JNIEnv* env, - jobject clazz, - jint function, - jobject argument) -{ - jclass StringArray = (*env)->FindClass(env, "[Ljava/lang/String;"); - - if (StringArray == NULL) { - LOGE("Could not find String[] class"); - return 0; - } - - if ((*env)->IsInstanceOf(env, argument, StringArray)) { - int argc = (*env)->GetArrayLength(env, argument); - const char **argv = malloc(sizeof(char *) * (argc+1)); - int i, result; - for (i = 0; i < argc; i++) { - argv[i] = (*env)->GetStringUTFChars(env, (*env)->GetObjectArrayElement(env, argument, i), NULL); - /* LOGI("argv[%d] = %s", i, argv[i]); */ - } - argv[argc] = NULL; - - result = lo_dlcall_argc_argv((void *) function, argc, argv); - - for (i = 0; i < argc; i++) - (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, argument, i), argv[i]); - - free(argv); - return result; - } - - return 0; -} - -// public static native boolean setup(String dataDir, -// String apkFile, -// String[] ld_library_path); - -jboolean -Java_org_libreoffice_android_Bootstrap_setup__Ljava_lang_String_2Ljava_lang_String_2_3Ljava_lang_String_2 - (JNIEnv* env, - jobject clazz, - jstring dataDir, - jstring apkFile, - jobjectArray ld_library_path) -{ - struct stat st; - int i, n, fd; - const jbyte *dataDirPath; - const jbyte *apkFilePath; - char *lib_dir; - - n = (*env)->GetArrayLength(env, ld_library_path); - - library_locations = malloc((n+2) * sizeof(char *)); - - dataDirPath = (*env)->GetStringUTFChars(env, dataDir, NULL); - - lib_dir = malloc(strlen(dataDirPath) + 5); - strcpy(lib_dir, dataDirPath); - strcat(lib_dir, "/lib"); - - (*env)->ReleaseStringUTFChars(env, dataDir, dataDirPath); - - library_locations[0] = lib_dir; - - for (i = 0; i < n; i++) { - const jbyte *s = (*env)->GetStringUTFChars(env, (*env)->GetObjectArrayElement(env, ld_library_path, i), NULL); - library_locations[i+1] = strdup(s); - (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, ld_library_path, i), s); - } - - library_locations[n+1] = NULL; - - for (n = 0; library_locations[n] != NULL; n++) - LOGI("library_locations[%d] = %s", n, library_locations[n]); - - apkFilePath = (*env)->GetStringUTFChars(env, apkFile, NULL); - - fd = open(apkFilePath, O_RDONLY); - if (fd == -1) { - LOGE("Could not open %s", apkFilePath); - (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath); - return JNI_FALSE; - } - if (fstat(fd, &st) == -1) { - LOGE("Could not fstat %s", apkFilePath); - close(fd); - (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath); - return JNI_FALSE; - } - apk_file = mmap(NULL, st.st_size, PROT_READ, MAP_SHARED, fd, 0); - close(fd); - - if (apk_file == MAP_FAILED) { - LOGE("Could not mmap %s", apkFilePath); - (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath); - return JNI_FALSE; - } - apk_file_size = st.st_size; - - (*env)->ReleaseStringUTFChars(env, apkFile, apkFilePath); - - return JNI_TRUE; -} - -// public statuc native boolean setup(int lo_main_ptr, -// Object lo_main_argument, -// int lo_main_delay); - -jboolean -Java_org_libreoffice_android_Bootstrap_setup__ILjava_lang_Object_2I(JNIEnv* env, - jobject clazz, - void *lo_main_ptr, - jobject lo_main_argument, - jint lo_main_delay) -{ - jclass StringArray; - int i; - - lo_main = lo_main_ptr; - - StringArray = (*env)->FindClass(env, "[Ljava/lang/String;"); - if (StringArray == NULL) { - LOGE("Could not find String[] class"); - return JNI_FALSE; - } - - if (!(*env)->IsInstanceOf(env, lo_main_argument, StringArray)) { - LOGE("lo_main_argument is not a String[]?"); - return JNI_FALSE; - } - - lo_main_argc = (*env)->GetArrayLength(env, lo_main_argument); - lo_main_argv = malloc(sizeof(char *) * (lo_main_argc+1)); - - for (i = 0; i < lo_main_argc; i++) { - const jbyte *s = (*env)->GetStringUTFChars(env, (*env)->GetObjectArrayElement(env, lo_main_argument, i), NULL); - lo_main_argv[i] = strdup(s); - (*env)->ReleaseStringUTFChars(env, (*env)->GetObjectArrayElement(env, lo_main_argument, i), s); - /* LOGI("argv[%d] = %s", i, lo_main_argv[i]); */ - } - lo_main_argv[lo_main_argc] = NULL; - - sleep_time = lo_main_delay; - - return JNI_TRUE; -} - -// public static native int getpid(); - -jint -Java_org_libreoffice_android_Bootstrap_getpid(JNIEnv* env, - jobject clazz) -{ - return getpid(); -} - - -// public static native void system(String cmdline); - -jint -Java_org_libreoffice_android_Bootstrap_system(JNIEnv* env, - jobject clazz, - jstring cmdline) -{ - const jbyte *s = (*env)->GetStringUTFChars(env, cmdline, NULL); - - LOGI("system(%s)", s); - - system(s); - - (*env)->ReleaseStringUTFChars(env, cmdline, s); -} - -char ** -lo_dlneeds(const char *library) -{ - int i, fd; - int n_needed; - char **result; - char *shstrtab, *dynstr; - Elf32_Ehdr hdr; - Elf32_Shdr shdr; - Elf32_Dyn dyn; - - /* Open library and read ELF header */ - - fd = open(library, O_RDONLY); - - if (fd == -1) { - LOGE("lo_dlneeds: Could not open library %s: %s", library, strerror(errno)); - return NULL; - } - - if (read(fd, &hdr, sizeof(hdr)) < sizeof(hdr)) { - LOGE("lo_dlneeds: Could not read ELF header of %s", library); - close(fd); - return NULL; - } - - /* Read in .shstrtab */ - - if (lseek(fd, hdr.e_shoff + hdr.e_shstrndx * sizeof(shdr), SEEK_SET) < 0) { - LOGE("lo_dlneeds: Could not seek to .shstrtab section header of %s", library); - close(fd); - return NULL; - } - if (read(fd, &shdr, sizeof(shdr)) < sizeof(shdr)) { - LOGE("lo_dlneeds: Could not read section header of %s", library); - close(fd); - return NULL; - } - - shstrtab = read_section(fd, &shdr); - if (shstrtab == NULL) - return NULL; - - /* Read section headers, looking for .dynstr section */ - - if (lseek(fd, hdr.e_shoff, SEEK_SET) < 0) { - LOGE("lo_dlneeds: Could not seek to section headers of %s", library); - close(fd); - return NULL; - } - for (i = 0; i < hdr.e_shnum; i++) { - if (read(fd, &shdr, sizeof(shdr)) < sizeof(shdr)) { - LOGE("lo_dlneeds: Could not read section header of %s", library); - close(fd); - return NULL; - } - if (shdr.sh_type == SHT_STRTAB && - strcmp(shstrtab + shdr.sh_name, ".dynstr") == 0) { - dynstr = read_section(fd, &shdr); - if (dynstr == NULL) { - free(shstrtab); - return NULL; - } - break; - } - } - - if (i == hdr.e_shnum) { - LOGE("lo_dlneeds: No .dynstr section in %s", library); - close(fd); - return NULL; - } - - /* Read section headers, looking for .dynamic section */ - - if (lseek(fd, hdr.e_shoff, SEEK_SET) < 0) { - LOGE("lo_dlneeds: Could not seek to section headers of %s", library); - close(fd); - return NULL; - } - for (i = 0; i < hdr.e_shnum; i++) { - if (read(fd, &shdr, sizeof(shdr)) < sizeof(shdr)) { - LOGE("lo_dlneeds: Could not read section header of %s", library); - close(fd); - return NULL; - } - if (shdr.sh_type == SHT_DYNAMIC) { - int dynoff; - int *libnames; - - /* Count number of DT_NEEDED entries */ - n_needed = 0; - if (lseek(fd, shdr.sh_offset, SEEK_SET) < 0) { - LOGE("lo_dlneeds: Could not seek to .dynamic section of %s", library); - close(fd); - return NULL; - } - for (dynoff = 0; dynoff < shdr.sh_size; dynoff += sizeof(dyn)) { - if (read(fd, &dyn, sizeof(dyn)) < sizeof(dyn)) { - LOGE("lo_dlneeds: Could not read .dynamic entry of %s", library); - close(fd); - return NULL; - } - if (dyn.d_tag == DT_NEEDED) - n_needed++; - } - - /* LOGI("Found %d DT_NEEDED libs", n_needed); */ - - result = malloc((n_needed+1) * sizeof(char *)); - - n_needed = 0; - if (lseek(fd, shdr.sh_offset, SEEK_SET) < 0) { - LOGE("lo_dlneeds: Could not seek to .dynamic section of %s", library); - close(fd); - free(result); - return NULL; - } - for (dynoff = 0; dynoff < shdr.sh_size; dynoff += sizeof(dyn)) { - if (read(fd, &dyn, sizeof(dyn)) < sizeof(dyn)) { - LOGE("lo_dlneeds: Could not read .dynamic entry in %s", library); - close(fd); - free(result); - return NULL; - } - if (dyn.d_tag == DT_NEEDED) { - /* LOGI("needs: %s\n", dynstr + dyn.d_un.d_val); */ - result[n_needed] = strdup(dynstr + dyn.d_un.d_val); - n_needed++; - } - } - - close(fd); - free(dynstr); - free(shstrtab); - result[n_needed] = NULL; - return result; - } - } - - LOGE("lo_dlneeds: Could not find .dynamic section in %s", library); - close(fd); - return NULL; -} - -void * -lo_dlopen(const char *library) -{ - /* - * We should *not* try to just dlopen() the bare library name - * first, as the stupid dynamic linker remembers for each library - * basename if loading it has failed. Thus if you try loading it - * once, and it fails because of missing needed libraries, and - * your load those, and then try again, it fails with an - * infuriating message "failed to load previously" in the log. - * - * We *must* first dlopen() all needed libraries, recursively. It - * shouldn't matter if we dlopen() a library that already is - * loaded, dlopen() just returns the same value then. - */ - - typedef struct loadedLib { - const char *name; - void *handle; - struct loadedLib *next; - } *loadedLib; - static loadedLib loaded_libraries = NULL; - - loadedLib rover; - loadedLib new_loaded_lib; - - struct stat st; - void *p; - char *full_name; - char **needed; - int i; - int found; - - rover = loaded_libraries; - while (rover != NULL && - strcmp(rover->name, library) != 0) - rover = rover->next; - - if (rover != NULL) - return rover->handle; - - /* LOGI("lo_dlopen(%s)", library); */ - - found = 0; - if (library[0] == '/') { - full_name = strdup(library); - - if (stat(full_name, &st) == 0 && - S_ISREG(st.st_mode)) - found = 1; - else - free(full_name); - } else { - for (i = 0; !found && library_locations[i] != NULL; i++) { - full_name = malloc(strlen(library_locations[i]) + 1 + strlen(library) + 1); - strcpy(full_name, library_locations[i]); - strcat(full_name, "/"); - strcat(full_name, library); - - if (stat(full_name, &st) == 0 && - S_ISREG(st.st_mode)) - found = 1; - else - free(full_name); - } - } - - if (!found) { - LOGE("lo_dlopen: Library %s not found", library); - return NULL; - } - - needed = lo_dlneeds(full_name); - if (needed == NULL) { - free(full_name); - return NULL; - } - - for (i = 0; needed[i] != NULL; i++) { - if (lo_dlopen(needed[i]) == NULL) { - free_ptrarray((void **) needed); - free(full_name); - return NULL; - } - } - free_ptrarray((void **) needed); - - p = dlopen(full_name, RTLD_LOCAL); - LOGI("dlopen(%s) = %p", full_name, p); - free(full_name); - if (p == NULL) - LOGE("lo_dlopen: Error from dlopen(%s): %s", library, dlerror()); - - new_loaded_lib = malloc(sizeof(*new_loaded_lib)); - new_loaded_lib->name = strdup(library); - new_loaded_lib->handle = p; - - new_loaded_lib->next = loaded_libraries; - loaded_libraries = new_loaded_lib; - - return p; -} - -void * -lo_dlsym(void *handle, - const char *symbol) -{ - void *p = dlsym(handle, symbol); - /* LOGI("dlsym(%p, %s) = %p", handle, symbol, p); */ - if (p == NULL) - LOGE("lo_dlsym: %s", dlerror()); - return p; -} - -int -lo_dladdr(void *addr, - Dl_info *info) -{ - FILE *maps; - char line[200]; - int result; - int found; - - result = dladdr(addr, info); - if (result == 0) { - /* LOGI("dladdr(%p) = 0", addr); */ - return 0; - } - - maps = fopen("/proc/self/maps", "r"); - if (maps == NULL) { - LOGE("lo_dladdr: Could not open /proc/self/maps: %s", strerror(errno)); - return 0; - } - - found = 0; - while (fgets(line, sizeof(line), maps) != NULL && - line[strlen(line)-1] == '\n') { - void *lo, *hi; - char file[sizeof(line)]; - file[0] = '\0'; - if (sscanf(line, "%x-%x %*s %*x %*x:%*x %*d %[^\n]", &lo, &hi, file) == 3) { - /* LOGI("got %p-%p: %s", lo, hi, file); */ - if (addr >= lo && addr < hi) { - if (info->dli_fbase != lo) { - LOGE("lo_dladdr: Base for %s in /proc/self/maps %p doesn't match what dladdr() said", file, lo); - fclose(maps); - return 0; - } - /* LOGI("dladdr(%p) = { %s:%p, %s:%p }: %s", - addr, - info->dli_fname, info->dli_fbase, - info->dli_sname ? info->dli_sname : "(none)", info->dli_saddr, - file); */ - info->dli_fname = strdup(file); - found = 1; - break; - } - } - } - if (!found) - LOGE("lo_dladdr: Did not find %p in /proc/self/maps", addr); - fclose(maps); - - return result; -} - -static uint32_t cdir_entry_size (struct cdir_entry *entry) -{ - return sizeof(*entry) + - letoh16(entry->filename_size) + - letoh16(entry->extra_field_size) + - letoh16(entry->file_comment_size); -} - -static struct cdir_entry * -find_cdir_entry (struct cdir_entry *entry, int count, const char *name) -{ - size_t name_size = strlen(name); - while (count--) { - if (letoh16(entry->filename_size) == name_size && - !memcmp(entry->data, name, name_size)) - return entry; - entry = (struct cdir_entry *)((char *)entry + cdir_entry_size(entry)); - } - return NULL; -} - -void * -lo_apkentry(const char *filename, - size_t *size) -{ - struct cdir_end *dirend = (struct cdir_end *)((char *) apk_file + apk_file_size - sizeof(*dirend)); - uint32_t cdir_offset; - uint16_t cdir_entries; - struct cdir_entry *cdir_start; - struct cdir_entry *entry; - struct local_file_header *file; - void *data; - - while ((void *)dirend > apk_file && - letoh32(dirend->signature) != CDIR_END_SIG) - dirend = (struct cdir_end *)((char *)dirend - 1); - if (letoh32(dirend->signature) != CDIR_END_SIG) { - LOGE("lo_apkentry: Could not find end of central directory record"); - return; - } - - cdir_offset = letoh32(dirend->cdir_offset); - cdir_entries = letoh16(dirend->cdir_entries); - cdir_start = (struct cdir_entry *)((char *)apk_file + cdir_offset); - - if (*filename == '/') - filename++; - - entry = find_cdir_entry(cdir_start, cdir_entries, filename); - - if (entry == NULL) { - LOGE("lo_apkentry: Could not find %s", filename); - return NULL; - } - file = (struct local_file_header *)((char *)apk_file + letoh32(entry->offset)); - - if (letoh16(file->compression) != STORE) { - LOGE("lo_apkentry: File %s is compressed", filename); - return NULL; - } - - data = ((char *)&file->data) + letoh16(file->filename_size) + letoh16(file->extra_field_size); - *size = file->uncompressed_size; - - /* LOGI("lo_apkentry(%s): %p, %d", filename, data, *size); */ - - return data; -} - -int -lo_dlcall_argc_argv(void *function, - int argc, - const char **argv) -{ - int (*fp)(int, const char **) = function; - int result = fp(argc, argv); - - return result; -} - -/* There is a bug in std::type_info::operator== and - * std::type_info::before() in libgnustl_shared.so in NDK r7 at - * least. They compare the type name pointers instead of comparing the - * type name strings. See - * http://code.google.com/p/android/issues/detail?id=22165 . So patch - * that, poke in jumps to our own code snippets below instead. - */ - -/* Replacement std::type_info::operator== */ - -__asm(" .arm\n" - " .global replacement_operator_equals_arm\n" - "replacement_operator_equals_arm:\n" - " push {lr}\n" - - /* Load name pointers into r0 and r1 */ - " ldr r0, [r0, #4]\n" - " ldr r1, [r1, #4]\n" - - /* First compare pointers */ - " cmp r0, r1\n" - - /* If equal, return true */ - " beq .L.equals.1\n" - - /* Otherwise call strcmp */ - " bl strcmp\n" - - /* And return true or false */ - " cmp r0, #0\n" - " moveq r0, #1\n" - " movne r0, #0\n" - " b .L.equals.9\n" - - ".L.equals.1:\n" - " mov r0, #1\n" - - ".L.equals.9:\n" - " pop {pc}\n" - ); - -extern unsigned int replacement_operator_equals_arm; - -/* The ARM (not Thumb) code of the operator== in NDK r7 */ -static unsigned int expected_operator_equals_r7_code[] = { - 0xe5903004, /* ldr r3, [r0, #4] */ - 0xe5910004, /* ldr r0, [r1, #4] */ - 0xe1530000, /* cmp r3, r0 */ - 0x13a00000, /* movne, #0 */ - 0x03a00001, /* moveq r0, #1 */ - 0xe12fff1e /* bx lr */ -}; - -/* Ditto for std::type_info::before() */ - -__asm(" .arm\n" - " .global replacement_method_before_arm\n" - "replacement_method_before_arm:\n" - " push {lr}\n" - - /* Load name pointers into r0 and r1 */ - " ldr r0, [r0, #4]\n" - " ldr r1, [r1, #4]\n" - - /* First compare pointers */ - " cmp r0, r1\n" - - /* If equal, return false */ - " beq .L.before.1\n" - - /* Otherwise call strcmp */ - " bl strcmp\n" - - /* And return true or false */ - " cmp r0, #0\n" - " movlt r0, #1\n" - " movge r0, #0\n" - " b .L.before.9\n" - - ".L.before.1:\n" - " mov r0, #0\n" - - ".L.before.9:\n" - " pop {pc}\n" - ); - -extern unsigned int replacement_method_before_arm; - -static unsigned int expected_method_before_r7_code[] = { - 0xe5903004, /* ldr r3, [r0, #4] */ - 0xe5910004, /* ldr r0, [r1, #4] */ - 0xe1530000, /* cmp r3, r0 */ - 0x23a00000, /* movcs r0, #0 */ - 0x33a00001, /* movcc r0, #1 */ - 0xe12fff1e /* bx lr */ -}; - -static void -patch(const char *symbol, - const char *plaintext, - unsigned *expected_code, - size_t expected_code_size, - unsigned *replacement_code) -{ - - void *libgnustl_shared; - void *code; - - void *base; - size_t size; - - /* libgnustl_shared.so should be already loaded as we build - * all LO code against it, so as we have loaded the .so - * containing lo_main() already, libgnustl_shared.so will have - * been brought in, too. - */ - libgnustl_shared = dlopen("libgnustl_shared.so", RTLD_LOCAL); - if (libgnustl_shared == NULL) { - LOGF("android_main: libgnustl_shared.so not mapped??"); - exit(0); - } - - code = dlsym(libgnustl_shared, symbol); - if (code == NULL) { - LOGF("android_main: %s not found!?", plaintext); - exit(0); - } - /* LOGI("%s is at %p", plaintext, operator_equals); */ - - if ((((unsigned) code) & 0x03) != 0) { - LOGE("android_main: Address of %s is not at word boundary, huh?", plaintext); - return; - } - - if ((((unsigned) &replacement_code) & 0x03) != 0) { - LOGE("android_main: Address of replacement %s is not at word boundary, huh?", plaintext); - return; - } - - if (memcmp(code, expected_code, expected_code_size) != 0) { - LOGI("android_main: Code for %s does not match that in NDK r7; not patching it", plaintext); - return; - } - - base = ROUND_DOWN(code, getpagesize()); - size = code + sizeof(expected_code_size) - ROUND_DOWN(code, getpagesize()); - if (mprotect(base, size, PROT_READ|PROT_WRITE|PROT_EXEC) == -1) { - LOGE("android_main: mprotect() failed: %s", strerror(errno)); - return; - } - - /* Poke a "b replacement_code" into it instead */ - *((unsigned *) code) = - (0xEA000000 | - ((((int) replacement_code - ((int) code + 8)) / 4) & 0x00FFFFFF)); -} - -static void -patch_libgnustl_shared(void) -{ - patch("_ZNKSt9type_infoeqERKS_", - "std::type_info::operator==", - expected_operator_equals_r7_code, - sizeof(expected_operator_equals_r7_code), - &replacement_operator_equals_arm); - - patch("_ZNKSt9type_info6beforeERKS_", - "std::type_info::before()", - expected_method_before_r7_code, - sizeof(expected_method_before_r7_code), - &replacement_method_before_arm); -} - -void -Java_org_libreoffice_android_Bootstrap_patch_libgnustl_shared(JNIEnv* env, - jobject clazz) -{ - patch_libgnustl_shared(); -} - -JavaVM * -lo_get_javavm(void) -{ - return app->activity->vm; -} - -void -android_main(struct android_app* state) -{ - struct engine engine; - Dl_info lo_main_info; - - app = state; - - memset(&engine, 0, sizeof(engine)); - state->userData = &engine; - state->onAppCmd = engine_handle_cmd; - - if (lo_dladdr(lo_main, &lo_main_info) != 0) { - lo_main_argv[0] = lo_main_info.dli_fname; - } - - if (sleep_time != 0) - sleep(sleep_time); - - patch_libgnustl_shared(); - - lo_main(lo_main_argc, lo_main_argv); - - exit(0); -} - -/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |