WIP

dependencies/trampoline/src

@@ -1 +1 @@
-Subproject commit b2cf446e9dd5593c388c1f244c527741070f7a26
+Subproject commit 027e58ee9bdcfef285c16e731c8db218082b9639

launcher/src/main.cpp

@@ -29,7 +29,7 @@ static void setup_environment(const options_t &options) {
     bind_to_env("_MCPI_ONLY_GENERATE", options.only_generate);
 #endif
 #ifdef MCPI_USE_NATIVE_TRAMPOLINE
-    bind_to_env(TRAMPOLINE_USE_PTRACE_ENV, options.use_ptrace_trampoline);
+    bind_to_env(TRAMPOLINE_USE_PIPES_ENV, !options.use_ptrace_trampoline);
 #endif
 
     // GTK Dark Mode

media-layer/trampoline/CMakeLists.txt

@@ -20,7 +20,7 @@ if(BUILD_NATIVE_COMPONENTS)
 elseif(BUILD_ARM_COMPONENTS)
     # Guest Component
     add_library(media-layer-core SHARED src/guest/guest.cpp ${MEDIA_LAYER_TRAMPOLINE_SRC} $<TARGET_OBJECTS:media-layer-extras>)
-    target_link_libraries(media-layer-core PUBLIC media-layer-headers PRIVATE reborn-util PRIVATE trampoline-headers)
+    target_link_libraries(media-layer-core PUBLIC media-layer-headers PRIVATE reborn-util PRIVATE trampoline-headers PRIVATE rt)
     target_compile_definitions(media-layer-core PRIVATE -DMEDIA_LAYER_TRAMPOLINE_GUEST)
     # Install
     if(MCPI_USE_MEDIA_LAYER_TRAMPOLINE)

media-layer/trampoline/src/GLESv1_CM.cpp

@@ -21,25 +21,100 @@ CALL(11, glFogfv, void, (GLenum pname, const GLfloat *params))
 #endif
 }
 
-// 'pointer' Is Only Supported As An Integer, Not As An Actual Pointer
+// Track GL State
+struct gl_array_state_t {
+    bool enabled = false;
+    GLint size = 0;
+    GLenum type = 0;
+    GLsizei stride = 0;
+    uint32_t pointer = 0;
+    bool operator==(const gl_array_state_t &other) const {
+        return enabled == other.enabled && size == other.size && type == other.type && stride == other.stride && pointer == other.pointer;
+    }
+    bool operator!=(const gl_array_state_t &other) const {
+        return !operator==(other);
+    }
+};
+struct gl_state_t {
+    GLuint bound_array_buffer = 0;
+    GLuint bound_texture = 0;
+    gl_array_state_t vertex_array;
+    gl_array_state_t color_array;
+    gl_array_state_t tex_coord_array;
+    // Update State
+    static typeof(glVertexPointer) *get_array_pointer_function(const GLenum array) {
+        switch (array) {
+            case GL_VERTEX_ARRAY: {
+                return glVertexPointer;
+            }
+            case GL_COLOR_ARRAY: {
+                return glColorPointer;
+            }
+            case GL_TEXTURE_COORD_ARRAY: {
+                return glTexCoordPointer;
+            }
+            default: {
+                ERR("Unsupported Array Type: %i", array);
+            }
+        }
+    }
+    gl_array_state_t &get_array_state(const GLenum array) {
+        switch (array) {
+            case GL_VERTEX_ARRAY: {
+                return vertex_array;
+            }
+            case GL_COLOR_ARRAY: {
+                return color_array;
+            }
+            case GL_TEXTURE_COORD_ARRAY: {
+                return tex_coord_array;
+            }
+            default: {
+                ERR("Unsupported Array Function");
+            }
+        }
+    }
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-#define CALL_GL_POINTER(unique_id, name) \
+    void enable_disable_array(const GLenum array, const bool value) {
-    CALL(unique_id, name, void, (GLint size, GLenum type, GLsizei stride, const void *pointer)) \
+        get_array_state(array).enabled = value;
-        trampoline(size, type, stride, uint32_t(pointer)); \
     }
 #else
-#define CALL_GL_POINTER(unique_id, name) \
+    void send_array_to_driver(GLenum array) {
-    CALL(unique_id, name, unused, unused) \
+        gl_array_state_t state = get_array_state(array);
-        GLint size = args.next<GLint>(); \
+        if (state.enabled) {
-        GLenum type = args.next<GLenum>(); \
+            glEnableClientState(array);
-        GLsizei stride = args.next<GLsizei>(); \
+        } else {
-        const void *pointer = (const void *) (uint64_t) args.next<uint32_t>(); \
+            glDisableClientState(array);
-        func(size, type, stride, pointer); \
+        }
-        return 0; \
+        typeof(glVertexPointer) *func = get_array_pointer_function(array);
+        func(state.size, state.type, state.stride, (const void *) uintptr_t(state.pointer));
+    }
+    void send_arrays_to_driver() {
+        send_array_to_driver(GL_VERTEX_ARRAY);
+        send_array_to_driver(GL_COLOR_ARRAY);
+        send_array_to_driver(GL_TEXTURE_COORD_ARRAY);
     }
 #endif
+};
+#ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
+static gl_state_t gl_state;
+#endif
 
-CALL_GL_POINTER(12, glVertexPointer)
+// 'pointer' Is Only Supported As An Integer, Not As An Actual Pointer
+#ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
+#define CALL_GL_POINTER(name, array) \
+    void name(GLint size, GLenum type, GLsizei stride, const void *pointer) { \
+        gl_array_state_t &state = gl_state.get_array_state(array); \
+        state.size = size; \
+        state.type = type; \
+        state.stride = stride; \
+        state.pointer = uint32_t(pointer); \
+    }
+#else
+#define CALL_GL_POINTER(name, array)
+#endif
+
+CALL_GL_POINTER(glVertexPointer, GL_VERTEX_ARRAY)
 
 CALL(13, glLineWidth, void, (GLfloat width))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
@@ -63,8 +138,12 @@ CALL(14, glBlendFunc, void, (GLenum sfactor, GLenum dfactor))
 
 CALL(15, glDrawArrays, void, (GLenum mode, GLint first, GLsizei count))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(mode, first, count);
+    trampoline(gl_state, mode, first, count);
 #else
+    gl_state_t gl_state = args.next<gl_state_t>();
+    glBindBuffer(GL_ARRAY_BUFFER, gl_state.bound_array_buffer);
+    glBindTexture(GL_TEXTURE_2D, gl_state.bound_texture);
+    gl_state.send_arrays_to_driver();
     GLenum mode = args.next<GLenum>();
     GLint first = args.next<GLint>();
     GLsizei count = args.next<GLsizei>();
@@ -97,8 +176,9 @@ CALL(17, glClear, void, (GLbitfield mask))
 
 CALL(18, glBufferData, void, (GLenum target, GLsizeiptr size, const void *data, GLenum usage))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, copy_array(size, (unsigned char *) data), usage);
+    trampoline(gl_state.bound_array_buffer, target, copy_array(size, (unsigned char *) data), usage);
 #else
+    glBindBuffer(GL_ARRAY_BUFFER, args.next<GLuint>());
     GLenum target = args.next<GLenum>();
     uint32_t size;
     const unsigned char *data = args.next_arr<unsigned char>(&size);
@@ -139,7 +219,7 @@ CALL(21, glMatrixMode, void, (GLenum mode))
 #endif
 }
 
-CALL_GL_POINTER(22, glColorPointer)
+CALL_GL_POINTER(glColorPointer, GL_COLOR_ARRAY)
 
 CALL(23, glScissor, void, (GLint x, GLint y, GLsizei width, GLsizei height))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
@@ -156,8 +236,9 @@ CALL(23, glScissor, void, (GLint x, GLint y, GLsizei width, GLsizei height))
 
 CALL(24, glTexParameteri, void, (GLenum target, GLenum pname, GLint param))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, pname, param);
+    trampoline(gl_state.bound_texture, target, pname, param);
 #else
+    glBindTexture(GL_TEXTURE_2D, args.next<GLuint>());
     GLenum target = args.next<GLenum>();
     GLenum pname = args.next<GLenum>();
     GLint param = args.next<GLint>();
@@ -204,8 +285,9 @@ static int get_texture_size(const GLsizei width, const GLsizei height, const GLe
 
 CALL(25, glTexImage2D, void, (GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const void *pixels))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, level, internalformat, width, height, border, format, type, copy_array(get_texture_size(width, height, format, type, true), (const unsigned char *) pixels));
+    trampoline(gl_state.bound_texture, target, level, internalformat, width, height, border, format, type, copy_array(get_texture_size(width, height, format, type, true), (const unsigned char *) pixels));
 #else
+    glBindTexture(GL_TEXTURE_2D, args.next<GLuint>());
     GLenum target = args.next<GLenum>();
     GLint level = args.next<GLint>();
     GLint internalformat = args.next<GLint>();
@@ -229,14 +311,11 @@ CALL(26, glEnable, void, (GLenum cap))
 #endif
 }
 
-CALL(27, glEnableClientState, void, (GLenum array))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(array);
+void glEnableClientState(const GLenum array) {
-#else
+    gl_state.enable_disable_array(array, true);
-    func(args.next<GLenum>());
-    return 0;
-#endif
 }
+#endif
 
 CALL(28, glPolygonOffset, void, (GLfloat factor, GLfloat units))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
@@ -249,16 +328,13 @@ CALL(28, glPolygonOffset, void, (GLfloat factor, GLfloat units))
 #endif
 }
 
-CALL_GL_POINTER(41, glTexCoordPointer)
+CALL_GL_POINTER(glTexCoordPointer, GL_TEXTURE_COORD_ARRAY)
 
-CALL(29, glDisableClientState, void, (GLenum array))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(array);
+void glDisableClientState(const GLenum array) {
-#else
+    gl_state.enable_disable_array(array, false);
-    func(args.next<GLenum>());
-    return 0;
-#endif
 }
+#endif
 
 CALL(30, glDepthRangef, void, (GLclampf near, GLclampf far))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
@@ -280,16 +356,15 @@ CALL(31, glDepthFunc, void, (GLenum func))
 #endif
 }
 
-CALL(32, glBindBuffer, void, (GLenum target, GLuint buffer))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, buffer);
+void glBindBuffer(const GLenum target, const GLuint buffer) {
-#else
+    if (target == GL_ARRAY_BUFFER) {
-    GLenum target = args.next<GLenum>();
+        gl_state.bound_array_buffer = buffer;
-    GLenum buffer = args.next<GLenum>();
+    } else {
-    func(target, buffer);
+        ERR("Unsupported Buffer Binding: %u", target);
-    return 0;
+    }
-#endif
 }
+#endif
 
 CALL(33, glClearColor, void, (GLclampf red, GLclampf green, GLclampf blue, GLclampf alpha))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
@@ -403,8 +478,9 @@ CALL(43, glColorMask, void, (GLboolean red, GLboolean green, GLboolean blue, GLb
 
 CALL(44, glTexSubImage2D, void, (GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *pixels))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, level, xoffset, yoffset, width, height, format, type, copy_array(get_texture_size(width, height, format, type, true), (const unsigned char *) pixels));
+    trampoline(gl_state.bound_texture, target, level, xoffset, yoffset, width, height, format, type, copy_array(get_texture_size(width, height, format, type, true), (const unsigned char *) pixels));
 #else
+    glBindTexture(GL_TEXTURE_2D, args.next<GLuint>());
     GLenum target = args.next<GLenum>();
     GLint level = args.next<GLint>();
     GLint xoffset = args.next<GLint>();
@@ -485,16 +561,15 @@ CALL(48, glGetFloatv, void, (GLenum pname, GLfloat *params))
 #endif
 }
 
-CALL(49, glBindTexture, void, (GLenum target, GLuint texture))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline(target, texture);
+void glBindTexture(const GLenum target, const GLuint texture) {
-#else
+    if (target == GL_TEXTURE_2D) {
-    GLenum target = args.next<GLenum>();
+        gl_state.bound_texture = texture;
-    GLuint texture = args.next<GLuint>();
+    } else {
-    func(target, texture);
+        ERR("Unsupported Texture Binding: %u", target);
-    return 0;
+    }
-#endif
 }
+#endif
 
 CALL(50, glTranslatef, void, (GLfloat x, GLfloat y, GLfloat z))
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST

media-layer/trampoline/src/guest/guest.cpp

@@ -1,6 +1,7 @@
 #include <unistd.h>
 #include <libreborn/libreborn.h>
 #include <string>
+#include <sys/mman.h>
 
 #include "guest.h"
 
@@ -16,8 +17,7 @@ static uint32_t trampoline_syscall(const uint32_t id, const uint32_t length, con
     return *(uint32_t *) args;
 }
 
-// Pipe Method
+// Pipe Method (Native Trampoline Only)
-#ifdef MCPI_USE_NATIVE_TRAMPOLINE
 static int get_pipe(const char *env) {
     const char *value = getenv(env);
     if (value == nullptr) {
@@ -26,7 +26,7 @@ static int get_pipe(const char *env) {
     std::string str = value;
     return std::stoi(str);
 }
-static uint32_t trampoline_pipe(const uint32_t id, const uint32_t length, const unsigned char *args) {
+static uint32_t trampoline_pipe(const uint32_t id) {
     // Get Pipes
     static int arguments_pipe = -1;
     static int return_value_pipe = -1;
@@ -34,13 +34,8 @@ static uint32_t trampoline_pipe(const uint32_t id, const uint32_t length, const
         arguments_pipe = get_pipe(TRAMPOLINE_ARGUMENTS_PIPE_ENV);
         return_value_pipe = get_pipe(TRAMPOLINE_RETURN_VALUE_PIPE_ENV);
     }
-    // Write Arguments
+    // Write ID
-    trampoline_pipe_arguments data = {
+    if (write(arguments_pipe, &id, sizeof(uint32_t)) != sizeof(uint32_t)) {
-        .id = id,
-        .length = length,
-        .args_addr = uint32_t(args)
-    };
-    if (write(arguments_pipe, &data, sizeof(trampoline_pipe_arguments)) != sizeof(trampoline_pipe_arguments)) {
         ERR("Unable To Write Trampoline Command");
     }
     // Return
@@ -50,29 +45,42 @@ static uint32_t trampoline_pipe(const uint32_t id, const uint32_t length, const
     }
     return ret;
 }
-#else
-static uint32_t trampoline_pipe(__attribute__((unused)) const uint32_t id, __attribute__((unused)) const uint32_t length, __attribute__((unused)) const unsigned char *args) {
-    IMPOSSIBLE();
-}
-#endif
 
 // Main Function
 uint32_t _raw_trampoline(const uint32_t id, const uint32_t length, const unsigned char *args) {
     // Configure Method
     static int use_syscall = -1;
     if (use_syscall == -1) {
-        use_syscall =
+        use_syscall = getenv(TRAMPOLINE_USE_PIPES_ENV) == nullptr;
-#ifdef MCPI_USE_NATIVE_TRAMPOLINE
-            getenv(TRAMPOLINE_USE_PTRACE_ENV) != nullptr
-#else
-            1
-#endif
-            ;
     }
     // Use Correct Method
     if (use_syscall) {
         return trampoline_syscall(id, length, args);
     } else {
-        return trampoline_pipe(id, length, args);
+        return trampoline_pipe(id);
     }
+}
+
+// Arguments Memory
+unsigned char *get_arguments_memory() {
+    static unsigned char fallback[MAX_TRAMPOLINE_ARGS_SIZE];
+    // Find Result
+    static unsigned char *ret = nullptr;
+    if (ret == nullptr) {
+        ret = fallback;
+        // Try Shared Memory
+        const char *shared_memory_name = getenv(TRAMPOLINE_SHARED_MEMORY_ENV);
+        if (shared_memory_name != nullptr) {
+            int fd = shm_open(shared_memory_name, O_RDWR, 0600);
+            if (fd == -1) {
+                ERR("Unable To Open Shared Memory: %s", strerror(errno));
+            }
+            ret = (unsigned char *) mmap(nullptr, MAX_TRAMPOLINE_ARGS_SIZE, PROT_WRITE, MAP_SHARED, fd, 0);
+            if (ret == MAP_FAILED) {
+                ERR("Unable To Map Shared Memory: %s", strerror(errno));
+            }
+        }
+    }
+    // Return
+    return ret;
 }

media-layer/trampoline/src/guest/guest.h

@@ -5,11 +5,12 @@
 #include "../common/common.h"
 
 // Trampoline Function
+unsigned char *get_arguments_memory();
 uint32_t _raw_trampoline(uint32_t id, uint32_t length, const unsigned char *args);
 
 // Compile Trampoline Arguments
 template <typename T>
-void _handle_trampoline_arg(unsigned char *&out, const T arg) {
+void _handle_trampoline_arg(unsigned char *&out, const T &arg) {
     block_pointer(T);
     *(T *) out = arg;
     out += sizeof(T);
@@ -33,7 +34,7 @@ struct copy_array {
     const void *data;
 };
 template <>
-inline void _handle_trampoline_arg<copy_array>(unsigned char *&out, const copy_array arg) {
+inline void _handle_trampoline_arg<copy_array>(unsigned char *&out, const copy_array &arg) {
     *(uint32_t *) out = arg.size;
     out += sizeof(uint32_t);
     if (arg.size > 0) {
@@ -45,7 +46,7 @@ inline void _handle_trampoline_arg<copy_array>(unsigned char *&out, const copy_a
 __attribute__((unused)) static void _add_to_trampoline_args(__attribute__((unused)) unsigned char *&out) {
 }
 template <typename T, typename... Args>
-void _add_to_trampoline_args(unsigned char *&out, T first, Args... args) {
+void _add_to_trampoline_args(unsigned char *&out, const T &first, const Args... args) {
     _handle_trampoline_arg(out, first);
     _add_to_trampoline_args(out, args...);
 }
@@ -53,7 +54,7 @@ void _add_to_trampoline_args(unsigned char *&out, T first, Args... args) {
 // Main Trampoline Function
 template <typename... Args>
 unsigned int _trampoline(unsigned int id, Args... args) {
-    static unsigned char out[MAX_TRAMPOLINE_ARGS_SIZE];
+    static unsigned char *out = get_arguments_memory();
     unsigned char *end = out;
     _add_to_trampoline_args(end, args...);
     const uint32_t length = end - out;

media-layer/trampoline/src/media-layer-core.cpp

@@ -87,7 +87,7 @@ CALL(8, media_swap_buffers, void, ())
 
 CALL(9, media_cleanup, void, ())
 #ifdef MEDIA_LAYER_TRAMPOLINE_GUEST
-    trampoline();
+    trampoline(false);
 #else
     func();
     return 0;