Changeset 16 for trunk/kernel/kern/do_interrupt.c

Timestamp:

May 10, 2017, 5:04:01 PM (7 years ago)

Author:

alain

Message:

mprove the HAL for interrupt, exception, syscall handling.

File:

• trunk/kernel/kern/do_interrupt.c (modified) (2 diffs)

trunk/kernel/kern/do_interrupt.c

@@ -1 +1 @@
 /*
- * kern/do_interrupt.c - kernel unified interrupt entry-point
+ * do_interrupt.c - architecture independant interrupt handler.
  * 
- * Copyright (c) 2008,2009,2010,2011,2012 Ghassan Almaless
- * Copyright (c) 2011,2012 UPMC Sorbonne Universites
+ * Author        Alain Greiner (2016)
  *
- * This file is part of ALMOS-kernel.
+ * Copyright (c) UPMC Sorbonne Universites
  *
- * ALMOS-kernel is free software; you can redistribute it and/or modify it
+ * This file is part of ALMOS-MKH.
+ *
+ * ALMOS-MKH is free software; you can redistribute it and/or modify it
  * under the terms of the GNU General Public License as published by
  * the Free Software Foundation; version 2.0 of the License.
  *
- * ALMOS-kernel is distributed in the hope that it will be useful, but
+ * ALMOS-MKH is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
@@ -17 +18 @@
  *
  * You should have received a copy of the GNU General Public License
- * along with ALMOS-kernel; if not, write to the Free Software Foundation,
+ * along with ALMOS-MKH; if not, write to the Free Software Foundation,
  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
  */
 
-#include <cpu.h>
-#include <task.h>
+#include <hal_types.h>
+#include <kernel_config.h>
 #include <thread.h>
-#include <cpu-trace.h>
-#include <chdev.h>
-#include <system.h>
-#include <signal.h>
+#include <dev_icu.h>
 
-#define irq_cpu_dmsg(c,...)                             \
-        do{                                             \
-                if(cpu_get_id() == (c))                 \
-                        isr_dmsg(INFO, __VA_ARGS__);    \
-        }while(0)
 
-void do_interrupt(struct thread_s *this, uint_t irq_num)
+////////////////////////////////////
+void do_interrupt( thread_t * this )
 {
-        register thread_state_t old_state;
-        struct irq_action_s *action;
-        struct cpu_s *cpu;
-        uint_t irq_state;
-        error_t ret;
+        // update user time     
+        thread_user_time_update( this );
 
-        cpu_trace_write(thread_current_cpu(this), do_interrupt);
+    // access ICU device to call the relevant ISR
+    dev_icu_irq_handler();
+           
+    // handle pending signals for interrupted thread
+    thread_signals_handle( this );
 
-        cpu = thread_current_cpu(this);
-
-        cpu->irq_nr ++;
-        old_state = this->state;
-
-        if(old_state == S_USR)
-        {
-                this->state = S_KERNEL;
-                tm_usr_compute(this);
-        }
-
-        arch_cpu_get_irq_entry(cpu, irq_num, &action);
-        action->irq_handler(action);
-           
-        cpu_yield();
-
-        if(old_state != S_USR)//and not a kernel thread ?
-                return;
-
-        /* it is safe to migrate as we are going to user *
-         * space.                                        */
-        if(thread_migration_isActivated(this))
-        {
-                thread_clear_cap_migrate(this);
-                cpu_enable_all_irq(&irq_state);
-                ret = thread_migrate(this,-1);
-                cpu_restore_irq(irq_state);
-
-                /* this pointer has expired */
-                this = CURRENT_THREAD;
-                cpu_wbflush();
-
-                if(ret == 0)    
-                        thread_migration_deactivate(this);
-                else
-                {
-                        isr_dmsg(INFO, 
-                        "%s: cpu %d, migration failed for victim pid %d, tid %d, err %d\n", 
-                         __FUNCTION__, 
-                         cpu_get_id(),
-                         this->task->pid,
-                         this->info.order,
-                         ret);
-                }
-        }
-        
-        tm_sys_compute(this);
-        this->state = S_USR;
-        signal_notify(this);
+        // update kernel time
+        thread_kernel_time_update( this );
 }