| 1 | /*
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| 2 | * Copyright (c) 2005 Martin Decky
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| 3 | * All rights reserved.
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| 4 | *
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| 5 | * Redistribution and use in source and binary forms, with or without
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| 6 | * modification, are permitted provided that the following conditions
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| 7 | * are met:
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| 8 | *
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| 9 | * - Redistributions of source code must retain the above copyright
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| 10 | * notice, this list of conditions and the following disclaimer.
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| 11 | * - Redistributions in binary form must reproduce the above copyright
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| 12 | * notice, this list of conditions and the following disclaimer in the
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| 13 | * documentation and/or other materials provided with the distribution.
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| 14 | * - The name of the author may not be used to endorse or promote products
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| 15 | * derived from this software without specific prior written permission.
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| 16 | *
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| 17 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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| 18 | * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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| 19 | * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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| 20 | * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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| 21 | * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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| 22 | * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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| 23 | * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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| 24 | * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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| 25 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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| 26 | * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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| 27 | */
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| 28 |
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| 29 | /** @addtogroup lc Libc
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| 30 | * @brief HelenOS C library
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| 31 | * @{
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| 32 | * @}
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| 33 | */
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| 34 |
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| 35 | /** @addtogroup libc generic
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| 36 | * @ingroup lc
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| 37 | * @{
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| 38 | */
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| 39 |
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| 40 | /** @file
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| 41 | */
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| 42 |
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| 43 | #include <libc.h>
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| 44 | #include <stdlib.h>
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| 45 | #include <tls.h>
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| 46 | #include <fibril.h>
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| 47 | #include <task.h>
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| 48 | #include <loader/pcb.h>
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| 49 | #include "private/libc.h"
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| 50 | #include "private/async.h"
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| 51 | #include "private/async_sess.h"
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| 52 | #include "private/malloc.h"
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| 53 | #include "private/io.h"
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| 54 |
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| 55 | static bool env_setup = false;
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| 56 |
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| 57 | void __main(void *pcb_ptr)
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| 58 | {
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| 59 | /* Initialize user task run-time environment */
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| 60 | __malloc_init();
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| 61 | __async_init();
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| 62 | __async_sess_init();
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| 63 |
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| 64 | fibril_t *fibril = fibril_setup();
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| 65 | if (fibril == NULL)
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| 66 | abort();
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| 67 |
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| 68 | __tcb_set(fibril->tcb);
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| 69 |
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| 70 | /* Save the PCB pointer */
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| 71 | __pcb = (pcb_t *) pcb_ptr;
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| 72 |
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| 73 | /* The basic run-time environment is setup */
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| 74 | env_setup = true;
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| 75 |
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| 76 | int argc;
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| 77 | char **argv;
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| 78 |
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| 79 | /*
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| 80 | * Get command line arguments and initialize
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| 81 | * standard input and output
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| 82 | */
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| 83 | if (__pcb == NULL) {
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| 84 | argc = 0;
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| 85 | argv = NULL;
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| 86 | __stdio_init(0, NULL);
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| 87 | } else {
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| 88 | argc = __pcb->argc;
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| 89 | argv = __pcb->argv;
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| 90 | __stdio_init(__pcb->filc, __pcb->filv);
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| 91 | (void) chdir(__pcb->cwd);
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| 92 | }
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| 93 |
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| 94 | /*
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| 95 | * Run main() and set task return value
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| 96 | * according the result
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| 97 | */
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| 98 | int retval = main(argc, argv);
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| 99 | exit(retval);
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| 100 | }
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| 101 |
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| 102 | void exit(int status)
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| 103 | {
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| 104 | if (env_setup) {
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| 105 | __stdio_done();
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| 106 | task_retval(status);
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| 107 | fibril_teardown(__tcb_get()->fibril_data);
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| 108 | }
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| 109 |
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| 110 | __SYSCALL1(SYS_TASK_EXIT, false);
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| 111 |
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| 112 | /* Unreachable */
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| 113 | while (1);
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| 114 | }
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| 115 |
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| 116 | void abort(void)
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| 117 | {
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| 118 | __SYSCALL1(SYS_TASK_EXIT, true);
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| 119 |
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| 120 | /* Unreachable */
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| 121 | while (1);
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| 122 | }
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| 123 |
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| 124 | /** @}
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| 125 | */
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