From c987ffa0dc1bb027153ed87343b4b94921125ba8 Mon Sep 17 00:00:00 2001 From: Claudio Maggioni Date: Mon, 18 May 2020 14:57:52 +0200 Subject: [PATCH] wip on hw4 --- pintos-env/pintos/threads/thread.c | 1 + pintos-env/pintos/threads/thread.h | 2 ++ pintos-env/pintos/userprog/filesys.dsk | Bin 0 -> 2580480 bytes pintos-env/pintos/userprog/process.c | 12 +++++++++-- pintos-env/pintos/userprog/syscall.c | 27 ++++++++++++++++++++++++- 5 files changed, 39 insertions(+), 3 deletions(-) create mode 100644 pintos-env/pintos/userprog/filesys.dsk diff --git a/pintos-env/pintos/threads/thread.c b/pintos-env/pintos/threads/thread.c index 62424df..e3ff6b6 100644 --- a/pintos-env/pintos/threads/thread.c +++ b/pintos-env/pintos/threads/thread.c @@ -575,6 +575,7 @@ init_thread (struct thread *t, const char *name, int priority) strlcpy (t->name, name, sizeof t->name); t->stack = (uint8_t *) t + PGSIZE; sema_init(&t->waiting_sem, 0); + t->waited_on_before = 0; if (thread_mlfqs) { t->nice_init = priority > 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b/pintos-env/pintos/userprog/syscall.c index 2885f78..a0deea0 100755 --- a/pintos-env/pintos/userprog/syscall.c +++ b/pintos-env/pintos/userprog/syscall.c @@ -4,12 +4,17 @@ #include "threads/interrupt.h" #include "threads/thread.h" #include +#include "userprog/process.h" +#include "threads/vaddr.h" +#include "userprog/pagedir.h" typedef int (*handler) (uint32_t, uint32_t, uint32_t); static handler syscall_vec[128]; static int sys_write (int fd, const void *buffer, unsigned length); static int sys_exit (int status); +static int sys_wait (tid_t tid); +static tid_t sys_exec (const char* file_name); static void syscall_nop(void); static void syscall_handler (struct intr_frame *); @@ -18,9 +23,11 @@ void syscall_init (void) { intr_register_int (0x30, 3, INTR_ON, syscall_handler, "syscall"); - +printf("syscall\n"); memset(syscall_vec, (int)&syscall_nop, 128); syscall_vec[SYS_EXIT] = (handler)sys_exit; + syscall_vec[SYS_WAIT] = (handler)sys_wait; + syscall_vec[SYS_EXEC] = (handler)sys_exec; syscall_vec[SYS_WRITE] = (handler)sys_write; } @@ -58,6 +65,24 @@ sys_exit (int status) { struct thread* t = thread_current(); printf("%s: exit(%d)\n", t->name, status); + t->exit_status = status; thread_exit (); return -1; +} + +int +sys_wait (tid_t tid) +{ + printf("system call wait\n"); + return process_wait(tid); +} + +tid_t +sys_exec (const char* file_name) { + if (file_name == NULL || is_kernel_vaddr(file_name) || + pagedir_get_page(thread_current()->pagedir, file_name) == NULL) { + return -1; + } + + return process_execute(file_name); } \ No newline at end of file