parent
709de17558
commit
b5974f3f46
@ -1,57 +0,0 @@
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#include <unistd.h>
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#include <string>
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#include <cstring>
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#include <cstdio>
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#include <sstream>
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#include <libreborn/libreborn.h>
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#include "ldconfig.h"
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char *get_full_library_search_path() {
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std::string processed_output;
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// Run
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int return_code;
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const char *ldconfig_argv[] = {"/sbin/ldconfig", "-NXv", NULL};
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char *output = run_command(ldconfig_argv, &return_code);
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std::stringstream output_stream((std::string(output)));
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// Check Exit Code
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if (return_code != 0) {
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ERR("ldconfig Failed: Exit Code: %i", return_code);
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}
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// Read
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int running = 1;
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while (running) {
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std::string line;
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if (std::getline(output_stream, line)) {
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// Remove Newline
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if (line.size() > 0 && line[line.size() - 1] == '\n') {
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line.pop_back();
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}
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// Interpret
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if (line.size() >= 2 && line[0] != '\t' && line[line.size() - 1] == ':') {
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// Blacklist RPI Legacy GL Drivers
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#define RPI_LEGACY_GL_PATH "/opt/vc"
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if (line.rfind(RPI_LEGACY_GL_PATH ":", 0) != 0 && line.rfind(RPI_LEGACY_GL_PATH "/", 0) != 0) {
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processed_output.append(line);
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}
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}
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} else {
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running = 0;
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}
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}
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// Free Output
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free(output);
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// Remove Colon
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if (processed_output.size() > 0 && processed_output[processed_output.size() - 1] == ':') {
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processed_output.pop_back();
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}
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// Return
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char *output_str = strdup(processed_output.c_str());
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ALLOC_CHECK(output_str);
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return output_str;
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}
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@ -0,0 +1,87 @@
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#include <stdlib.h>
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#include <errno.h>
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#include <sys/stat.h>
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#include <libreborn/libreborn.h>
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#include "bootstrap.h"
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#include "patchelf.h"
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// Duplicate MCPI Executable Into /tmp
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static void duplicate_mcpi_executable() {
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// Get Original Path
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const char *original_path = getenv("MCPI_EXECUTABLE_PATH");
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// Generate New File
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char new_path[] = "/tmp/.minecraft-pi-XXXXXX";
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int new_file_fd = mkstemp(new_path);
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if (new_file_fd == -1) {
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ERR("Unable To Create Temporary File: %s", strerror(errno));
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}
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FILE *new_file = fdopen(new_file_fd, "wb");
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if (new_file == NULL) {
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ERR("Unable To Open Temporary File: %s", strerror(errno));
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}
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set_and_print_env("MCPI_EXECUTABLE_PATH", new_path);
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// Copy Original File
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{
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// Open Original File
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FILE *original_file = fopen(original_path, "rb");
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if (original_file == NULL) {
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ERR("Unable To Open File: %s", original_path);
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}
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// Copy
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#define BUFFER_SIZE 1024
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char buf[BUFFER_SIZE];
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size_t bytes_read = 0;
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while ((bytes_read = fread((void *) buf, 1, BUFFER_SIZE, original_file)) > 0) {
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fwrite((void *) buf, 1, bytes_read, new_file);
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if (ferror(new_file) != 0) {
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ERR("Unable To Write File: %s", new_path);
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}
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}
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if (ferror(original_file) != 0) {
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ERR("Unable To Read File: %s", original_path);
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}
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// Close Original File
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fclose(original_file);
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}
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// Fix Permissions
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if (fchmod(new_file_fd, S_IRUSR | S_IWUSR | S_IXUSR) != 0) {
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ERR("Unable To Set File Permissions: %s: %s", new_path, strerror(errno));
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}
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// Close New File
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fclose(new_file);
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close(new_file_fd);
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}
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// Fix MCPI Dependencies
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void patch_mcpi_elf_dependencies(const char *linker) {
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// Duplicate MCPI executable into /tmp so it can be modified.
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duplicate_mcpi_executable();
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// Run patchelf
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const char *const command[] = {
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"patchelf",
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"--set-interpreter", linker,
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"--remove-needed", "libbcm_host.so",
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"--remove-needed", "libX11.so.6",
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"--remove-needed", "libEGL.so",
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"--replace-needed", "libGLESv2.so", "libGLESv1_CM.so.1",
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getenv("MCPI_EXECUTABLE_PATH"),
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NULL
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};
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int return_code = 0;
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char *output = run_command(command, &return_code);
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if (output != NULL) {
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free(output);
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}
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if (return_code != 0) {
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ERR("patchelf Failed: Exit Code: %i", return_code);
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}
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}
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@ -1,18 +0,0 @@
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project(media-layer-stubs-redirect)
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# MCPI Depends On GLESv2, But Uses GLESv1_CM
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add_library(GLESv2_redirect SHARED src/nop.c)
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target_link_libraries(GLESv2_redirect GLESv1_CM)
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target_link_options(GLESv2_redirect PRIVATE "-Wl,--no-as-needed")
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set_target_properties(GLESv2_redirect PROPERTIES OUTPUT_NAME "GLESv2")
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install(TARGETS GLESv2_redirect DESTINATION "${MCPI_LIB_DIR}")
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# MCPI links to libEGL.so instead of libEGL.so.1, this creates a fake libEGL.so which redirects it to the correct libEGL.so.1.
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# This is only needed on configurations that don't generate their own libEGL.so.
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if(NOT MCPI_HEADLESS_MODE AND NOT MCPI_USE_MEDIA_LAYER_PROXY)
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add_library(EGL_redirect SHARED src/nop.c)
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target_link_libraries(EGL_redirect EGL)
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target_link_options(EGL_redirect PRIVATE "-Wl,--no-as-needed")
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set_target_properties(EGL_redirect PROPERTIES OUTPUT_NAME "EGL")
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install(TARGETS EGL_redirect DESTINATION "${MCPI_LIB_DIR}")
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endif()
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@ -1 +0,0 @@
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// NOP
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@ -1,39 +0,0 @@
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#include <EGL/egl.h>
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#include <libreborn/libreborn.h>
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// EGL Is Replaced With GLFW
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EGLDisplay eglGetDisplay(__attribute__((unused)) NativeDisplayType native_display) {
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IMPOSSIBLE();
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}
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EGLBoolean eglInitialize(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLint *major, __attribute__((unused)) EGLint *minor) {
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IMPOSSIBLE();
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}
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EGLBoolean eglChooseConfig(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLint const *attrib_list, __attribute__((unused)) EGLConfig *configs, __attribute__((unused)) EGLint config_size, __attribute__((unused)) EGLint *num_config) {
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IMPOSSIBLE();
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}
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EGLBoolean eglBindAPI(__attribute__((unused)) EGLenum api) {
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IMPOSSIBLE();
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}
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EGLContext eglCreateContext(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) EGLContext share_context, __attribute__((unused)) EGLint const *attrib_list) {
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IMPOSSIBLE();
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}
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EGLSurface eglCreateWindowSurface(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLConfig config, __attribute__((unused)) NativeWindowType native_window, __attribute__((unused)) EGLint const *attrib_list) {
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IMPOSSIBLE();
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}
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EGLBoolean eglMakeCurrent(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface draw, __attribute__((unused)) EGLSurface read, __attribute__((unused)) EGLContext context) {
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IMPOSSIBLE();
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}
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EGLBoolean eglDestroySurface(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface) {
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IMPOSSIBLE();
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}
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EGLBoolean eglDestroyContext(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLContext context) {
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IMPOSSIBLE();
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}
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EGLBoolean eglTerminate(__attribute__((unused)) EGLDisplay display) {
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IMPOSSIBLE();
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}
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EGLBoolean eglSwapBuffers(__attribute__((unused)) EGLDisplay display, __attribute__((unused)) EGLSurface surface) {
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IMPOSSIBLE();
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}
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@ -1,12 +0,0 @@
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#include <X11/Xlib.h>
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#include <libreborn/libreborn.h>
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// Raw X11 Is Replaced With GLFW
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int XTranslateCoordinates(__attribute__((unused)) void *display, __attribute__((unused)) XID src_w, __attribute__((unused)) XID dest_w, __attribute__((unused)) int src_x, __attribute__((unused)) int src_y, __attribute__((unused)) int *dest_x_return, __attribute__((unused)) int *dest_y_return, __attribute__((unused)) XID *child_return) {
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IMPOSSIBLE();
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}
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int XGetWindowAttributes(__attribute__((unused)) void *display, __attribute__((unused)) XID w, __attribute__((unused)) XWindowAttributes *window_attributes_return) {
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IMPOSSIBLE();
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}
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@ -1,27 +0,0 @@
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#include <stdint.h>
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void bcm_host_init(void) {
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}
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void bcm_host_deinit(void) {
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}
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int32_t graphics_get_display_size(__attribute__((unused)) const uint16_t display_number, __attribute__((unused)) uint32_t *width, __attribute__((unused)) uint32_t *height) {
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return -1;
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}
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uint32_t vc_dispmanx_display_open(__attribute__((unused)) uint32_t device) {
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return 0;
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}
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uint32_t vc_dispmanx_element_add(__attribute__((unused)) uint32_t update, __attribute__((unused)) uint32_t display, __attribute__((unused)) int32_t layer, __attribute__((unused)) const void *dest_rect, __attribute__((unused)) uint32_t src, __attribute__((unused)) const void *src_rect, __attribute__((unused)) uint32_t protection, __attribute__((unused)) void *alpha, __attribute__((unused)) void *clamp, __attribute__((unused)) uint32_t transform) {
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return 0;
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}
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uint32_t vc_dispmanx_update_start(__attribute__((unused)) int32_t priority) {
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return 0;
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}
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int vc_dispmanx_update_submit_sync(__attribute__((unused)) uint32_t update) {
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return 0;
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}
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@ -0,0 +1,18 @@
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#include <libreborn/libreborn.h>
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// Do Nothing Function
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static void do_nothing() {
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// NOP
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}
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// Patch bcm_host Calls
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__attribute__((constructor)) static void patch_bcm_host_calls() {
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// Disable bcm_host Calls
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overwrite_call((void *) 0xdfec, (void *) do_nothing); // bcm_host_init
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overwrite_call((void *) 0x12418, (void *) do_nothing); // bcm_host_deinit
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overwrite_call((void *) 0x125a8, (void *) do_nothing); // graphics_get_display_size
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overwrite_call((void *) 0x125dc, (void *) do_nothing); // vc_dispmanx_display_open
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overwrite_call((void *) 0x125e8, (void *) do_nothing); // vc_dispmanx_update_start
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overwrite_call((void *) 0x12618, (void *) do_nothing); // vc_dispmanx_element_add
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overwrite_call((void *) 0x12624, (void *) do_nothing); // vc_dispmanx_update_submit_sync
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}
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Loading…
Reference in new issue