Changeset 1affcdf3 in mainline for uspace/srv/loader/main.c

Timestamp:

2011-06-10T19:33:41Z (13 years ago)

Author:

Maurizio Lombardi <m.lombardi85@…>

Branches:

lfn, master, serial, ticket/834-toolchain-update, topic/msim-upgrade, topic/simplify-dev-export

Children:

1878386

Parents:

13ecdac9 (diff), 79a141a (diff)
Note: this is a merge changeset, the changes displayed below correspond to the merge itself.
Use the (diff) links above to see all the changes relative to each parent.

Message:

Merge mainline changes

File:

• uspace/srv/loader/main.c (modified) (10 diffs)

uspace/srv/loader/main.c

@@ -52 +52 @@
 #include <ipc/services.h>
 #include <ipc/loader.h>
-#include <ipc/ns.h>
-#include <macros.h>
+#include <ns.h>
 #include <loader/pcb.h>
+#include <entry_point.h>
 #include <errno.h>
 #include <async.h>
 #include <str.h>
 #include <as.h>
-
 #include <elf.h>
 #include <elf_load.h>
+
+#ifdef CONFIG_RTLD
+#include <rtld/rtld.h>
+#include <rtld/dynamic.h>
+#include <rtld/module.h>
+
+static int ldr_load_dyn_linked(elf_info_t *p_info);
+#endif
 
 #define DPRINTF(...)
@@ -89 +96 @@
 
 static elf_info_t prog_info;
-static elf_info_t interp_info;
-
-static bool is_dyn_linked;
 
 /** Used to limit number of connections to one. */
 static bool connected = false;
+
+#ifdef CONFIG_RTLD
+/** State structure of the dynamic linker. */
+runtime_env_t dload_re;
+static module_t prog_mod;
+#endif
 
 static void ldr_get_taskid(ipc_callid_t rid, ipc_call_t *request)
@@ -283 +293 @@
         int rc;
         
-        rc = elf_load_file(pathname, 0, &prog_info);
+        rc = elf_load_file(pathname, 0, 0, &prog_info);
         if (rc != EE_OK) {
                 DPRINTF("Failed to load executable '%s'.\n", pathname);
@@ -302 +312 @@
         if (prog_info.interp == NULL) {
                 /* Statically linked program */
-                is_dyn_linked = false;
                 async_answer_0(rid, EOK);
                 return 0;
         }
         
-        rc = elf_load_file(prog_info.interp, 0, &interp_info);
-        if (rc != EE_OK) {
-                DPRINTF("Failed to load interpreter '%s.'\n",
-                    prog_info.interp);
-                async_answer_0(rid, EINVAL);
-                return 1;
-        }
-        
-        is_dyn_linked = true;
-        async_answer_0(rid, EOK);
-        
+        DPRINTF("Binary is dynamically linked.\n");
+#ifdef CONFIG_RTLD
+        DPRINTF(" - pcb address: %p\n", &pcb);
+        DPRINTF( "- prog dynamic: %p\n", prog_info.dynamic);
+
+        rc = ldr_load_dyn_linked(&prog_info);
+#else
+        rc = ENOTSUP;
+#endif
+        async_answer_0(rid, rc);
         return 0;
 }
 
+#ifdef CONFIG_RTLD
+
+static int ldr_load_dyn_linked(elf_info_t *p_info)
+{
+        runtime_env = &dload_re;
+
+        DPRINTF("Load dynamically linked program.\n");
+
+        /*
+         * First we need to process dynamic sections of the executable
+         * program and insert it into the module graph.
+         */
+
+        DPRINTF("Parse program .dynamic section at %p\n", p_info->dynamic);
+        dynamic_parse(p_info->dynamic, 0, &prog_mod.dyn);
+        prog_mod.bias = 0;
+        prog_mod.dyn.soname = "[program]";
+
+        /* Initialize list of loaded modules */
+        list_initialize(&runtime_env->modules_head);
+        list_append(&prog_mod.modules_link, &runtime_env->modules_head);
+
+        /* Pointer to program module. Used as root of the module graph. */
+        runtime_env->program = &prog_mod;
+
+        /* Work around non-existent memory space allocation. */
+        runtime_env->next_bias = 0x1000000;
+
+        /*
+         * Now we can continue with loading all other modules.
+         */
+
+        DPRINTF("Load all program dependencies\n");
+        module_load_deps(&prog_mod);
+
+        /*
+         * Now relocate/link all modules together.
+         */
+
+        /* Process relocations in all modules */
+        DPRINTF("Relocate all modules\n");
+        modules_process_relocs(&prog_mod);
+
+        /* Pass runtime evironment pointer through PCB. */
+        pcb.rtld_runtime = (void *) runtime_env;
+
+        return 0;
+}
+#endif
 
 /** Run the previously loaded program.
@@ -332 +389 @@
         const char *cp;
         
+        DPRINTF("Set task name\n");
+
         /* Set the task name. */
         cp = str_rchr(pathname, '/');
@@ -337 +396 @@
         task_set_name(cp);
         
-        if (is_dyn_linked == true) {
-                /* Dynamically linked program */
-                DPRINTF("Run ELF interpreter.\n");
-                DPRINTF("Entry point: %p\n", interp_info.entry);
-                
-                async_answer_0(rid, EOK);
-                elf_run(&interp_info, &pcb);
-        } else {
-                /* Statically linked program */
-                async_answer_0(rid, EOK);
-                elf_run(&prog_info, &pcb);
-        }
+        /* Run program */
+        DPRINTF("Reply OK\n");
+        async_answer_0(rid, EOK);
+        DPRINTF("Jump to entry point at %p\n", pcb.entry);
+        entry_point_jmp(prog_info.entry, &pcb);
         
         /* Not reached */
@@ -360 +412 @@
 static void ldr_connection(ipc_callid_t iid, ipc_call_t *icall)
 {
-        ipc_callid_t callid;
-        ipc_call_t call;
-        int retval;
-        
         /* Already have a connection? */
         if (connected) {
@@ -376 +424 @@
         
         /* Ignore parameters, the connection is already open */
-        (void) iid;
         (void) icall;
         
-        while (1) {
-                callid = async_get_call(&call);
+        while (true) {
+                int retval;
+                ipc_call_t call;
+                ipc_callid_t callid = async_get_call(&call);
+                
+                if (!IPC_GET_IMETHOD(call))
+                        exit(0);
                 
                 switch (IPC_GET_IMETHOD(call)) {
-                case IPC_M_PHONE_HUNGUP:
-                        exit(0);
                 case LOADER_GET_TASKID:
                         ldr_get_taskid(callid, &call);
@@ -411 +461 @@
                 }
                 
-                if (IPC_GET_IMETHOD(call) != IPC_M_PHONE_HUNGUP)
-                        async_answer_0(callid, retval);
+                async_answer_0(callid, retval);
         }
 }
@@ -425 +474 @@
         /* Introduce this task to the NS (give it our task ID). */
         task_id_t id = task_get_id();
-        int rc = async_req_2_0(PHONE_NS, NS_ID_INTRO, LOWER32(id), UPPER32(id));
+        int rc = ns_intro(id);
         if (rc != EOK)
                 return -1;