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-rw-r--r--kernel/kernel.c231
1 files changed, 117 insertions, 114 deletions
diff --git a/kernel/kernel.c b/kernel/kernel.c
index 53e50a7..4a1fd07 100644
--- a/kernel/kernel.c
+++ b/kernel/kernel.c
@@ -6,7 +6,7 @@
** @brief Kernel support routines
*/
-#define KERNEL_SRC
+#define KERNEL_SRC
#include <common.h>
#include <cio.h>
@@ -37,8 +37,8 @@
// character buffers, usable throughout the OS
// nto guaranteed to retain their contents across an exception return
-char b256[256]; // primarily used for message creation
-char b512[512]; // used by PANIC macro
+char b256[256]; // primarily used for message creation
+char b512[512]; // used by PANIC macro
/*
** PRIVATE FUNCTIONS
@@ -55,116 +55,117 @@ char b512[512]; // used by PANIC macro
**
** @param dtrace Decode the TRACE options
*/
-static void kreport( bool_t dtrace ) {
-
- cio_puts( "\n-------------------------------\n" );
- cio_printf( "Config: N_PROCS = %d", N_PROCS );
- cio_printf( " N_PRIOS = %d", N_PRIOS );
- cio_printf( " N_STATES = %d", N_STATES );
- cio_printf( " CLOCK = %dHz\n", CLOCK_FREQ );
+static void kreport(bool_t dtrace)
+{
+ cio_puts("\n-------------------------------\n");
+ cio_printf("Config: N_PROCS = %d", N_PROCS);
+ cio_printf(" N_PRIOS = %d", N_PRIOS);
+ cio_printf(" N_STATES = %d", N_STATES);
+ cio_printf(" CLOCK = %dHz\n", CLOCK_FREQ);
// This code is ugly, but it's the simplest way to
// print out the values of compile-time options
// without spending a lot of execution time at it.
- cio_puts( "Options: "
+ cio_puts("Options: "
#ifdef RPT_INT_UNEXP
- " R-uint"
+ " R-uint"
#endif
#ifdef RPT_INT_MYSTERY
- " R-mint"
+ " R-mint"
#endif
#ifdef TRACE_CX
- " CX"
+ " CX"
#endif
#ifdef CONSOLE_STATS
- " Cstats"
+ " Cstats"
#endif
- ); // end of cio_puts() call
+ ); // end of cio_puts() call
#ifdef SANITY
- cio_printf( " SANITY = %d", SANITY );
+ cio_printf(" SANITY = %d", SANITY);
#endif
#ifdef STATUS
- cio_printf( " STATUS = %d", STATUS );
+ cio_printf(" STATUS = %d", STATUS);
#endif
#if TRACE > 0
- cio_printf( " TRACE = 0x%04x\n", TRACE );
+ cio_printf(" TRACE = 0x%04x\n", TRACE);
// decode the trace settings if that was requested
- if( TRACING_SOMETHING && dtrace ) {
-
+ if (TRACING_SOMETHING && dtrace) {
// this one is simpler - we rely on string literal
// concatenation in the C compiler to create one
// long string to print out
- cio_puts( "Tracing:"
+ cio_puts("Tracing:"
#if TRACING_PCB
- " PCB"
+ " PCB"
#endif
-#if TRACING_STACK
- " STK"
+#if TRACING_VM
+ " VM"
#endif
#if TRACING_QUEUE
- " QUE"
+ " QUE"
#endif
#if TRACING_SCHED
- " SCHED"
+ " SCHED"
+#endif
+#if TRACING_DISPATCH
+ " DISPATCH"
#endif
#if TRACING_SYSCALLS
- " SCALL"
+ " SCALL"
#endif
#if TRACING_SYSRETS
- " SRET"
+ " SRET"
#endif
#if TRACING_EXIT
- " EXIT"
-#endif
-#if TRACING_DISPATCH
- " DISPATCH"
+ " EXIT"
#endif
#if TRACING_INIT
- " INIT"
+ " INIT"
#endif
#if TRACING_KMEM
- " KM"
+ " KM"
#endif
#if TRACING_KMEM_FREELIST
- " KMFL"
+ " KMFL"
#endif
#if TRACING_KMEM_INIT
- " KMIN"
+ " KMIN"
+#endif
+#if TRACING_FORK
+ " FORK"
#endif
-#if TRACING_SPAWN
- " SPAWN"
+#if TRACING_EXEC
+ " EXEC"
#endif
#if TRACING_SIO_STAT
- " S_STAT"
+ " S_STAT"
#endif
#if TRACING_SIO_ISR
- " S_ISR"
+ " S_ISR"
#endif
#if TRACING_SIO_RD
- " S_RD"
+ " S_RD"
#endif
#if TRACING_SIO_WR
- " S_WR"
+ " S_WR"
#endif
#if TRACING_USER
- " USER"
+ " USER"
#endif
#if TRACING_ELF
- " ELF"
+ " ELF"
#endif
- ); // end of cio_puts() call
+ ); // end of cio_puts() call
}
-#endif /* TRACE > 0 */
+#endif /* TRACE > 0 */
- cio_puts( "\n-------------------------------\n" );
+ cio_puts("\n-------------------------------\n");
}
-
#if defined(CONSOLE_STATS)
/**
** stats - callback routine for console statistics
@@ -176,53 +177,51 @@ static void kreport( bool_t dtrace ) {
**
** This code runs as part of the CIO ISR.
*/
-static void stats( int code ) {
-
- switch( code ) {
-
- case 'a': // dump the active table
- ptable_dump( "\nActive processes", false );
+static void stats(int code)
+{
+ switch (code) {
+ case 'a': // dump the active table
+ ptable_dump("\nActive processes", false);
break;
- case 'c': // dump context info for all active PCBs
- ctx_dump_all( "\nContext dump" );
+ case 'c': // dump context info for all active PCBs
+ ctx_dump_all("\nContext dump");
break;
- case 'p': // dump the active table and all PCBs
- ptable_dump( "\nActive processes", true );
+ case 'p': // dump the active table and all PCBs
+ ptable_dump("\nActive processes", true);
break;
- case 'q': // dump the queues
+ case 'q': // dump the queues
// code to dump out any/all queues
- pcb_queue_dump( "R", ready );
- pcb_queue_dump( "W", waiting );
- pcb_queue_dump( "S", sleeping );
- pcb_queue_dump( "Z", zombie );
- pcb_queue_dump( "I", sioread );
+ pcb_queue_dump("R", ready);
+ pcb_queue_dump("W", waiting);
+ pcb_queue_dump("S", sleeping);
+ pcb_queue_dump("Z", zombie);
+ pcb_queue_dump("I", sioread);
break;
- case 'r': // print system configuration information
- report( true );
+ case 'r': // print system configuration information
+ report(true);
break;
// ignore CR and LF
case '\r': // FALL THROUGH
case '\n':
break;
-
+
default:
- cio_printf( "console: unknown request '0x%02x'\n", code );
+ cio_printf("console: unknown request '0x%02x'\n", code);
// FALL THROUGH
- case 'h': // help message
- cio_puts( "\nCommands:\n"
- " a -- dump the active table\n"
- " c -- dump contexts for active processes\n"
- " h -- this message\n"
- " p -- dump the active table and all PCBs\n"
- " q -- dump the queues\n"
- " r -- print system configuration\n"
- );
+ case 'h': // help message
+ cio_puts("\nCommands:\n"
+ " a -- dump the active table\n"
+ " c -- dump contexts for active processes\n"
+ " h -- this message\n"
+ " p -- dump the active table and all PCBs\n"
+ " q -- dump the queues\n"
+ " r -- print system configuration\n");
break;
}
}
@@ -240,15 +239,15 @@ static void stats( int code ) {
**
** Making this type 'int' keeps the compiler happy.
*/
-int main( void ) {
-
+int main(void)
+{
/*
** BOILERPLATE CODE - taken from basic framework
**
** Initialize interrupt stuff.
*/
- init_interrupts(); // IDT and PIC initialization
+ init_interrupts(); // IDT and PIC initialization
/*
** Console I/O system.
@@ -258,13 +257,13 @@ int main( void ) {
** and queue modules.
*/
-#if defined(CONSOLE_STATS)
- cio_init( stats );
+#if defined(CONSOLE_STATS)
+ cio_init(stats);
#else
- cio_init( NULL ); // no console callback routine
+ cio_init(NULL); // no console callback routine
#endif
- cio_clearscreen(); // wipe out whatever is there
+ cio_clearscreen(); // wipe out whatever is there
/*
** TERM-SPECIFIC CODE STARTS HERE
@@ -277,40 +276,40 @@ int main( void ) {
** install their own ISRs in their initialization routines.
*/
- cio_puts( "System initialization starting.\n" );
- cio_puts( "-------------------------------\n" );
+ cio_puts("System initialization starting.\n");
+ cio_puts("-------------------------------\n");
- cio_puts( "Modules:" );
+ cio_puts("Modules:");
// call the module initialization functions, being
// careful to follow any module precedence requirements
- km_init(); // MUST BE FIRST
+ km_init(); // MUST BE FIRST
#if TRACING_KMEM || TRACING_KMEM_FREE
- delay( DELAY_2_SEC ); // approximately
+ delay(DELAY_2_SEC); // approximately
#endif
// other module initialization calls here
- clk_init(); // clock
- pcb_init(); // process (PCBs, queues, scheduler)
+ clk_init(); // clock
+ pcb_init(); // process (PCBs, queues, scheduler)
#if TRACING_PCB
- delay( DELAY_2_SEC );
+ delay(DELAY_2_SEC);
#endif
- sio_init(); // serial i/o
- sys_init(); // system call
+ sio_init(); // serial i/o
+ sys_init(); // system call
#if TRACING_SYSCALLS || TRACING_SYSRETS
- delay( DELAY_2_SEC );
+ delay(DELAY_2_SEC);
#endif
- vm_init(); // virtual memory
- user_init(); // user code handling
+ vm_init(); // virtual memory
+ user_init(); // user code handling
- cio_puts( "\nModule initialization complete.\n" );
- cio_puts( "-------------------------------\n" );
+ cio_puts("\nModule initialization complete.\n");
+ cio_puts("-------------------------------\n");
// report our configuration options
- kreport( true );
+ kreport(true);
- delay( DELAY_3_SEC );
+ delay(DELAY_3_SEC);
/*
** Other tasks typically performed here:
@@ -327,7 +326,7 @@ int main( void ) {
*/
// if we can't get a PCB, there's no use continuing!
- assert( pcb_alloc(&init_pcb) == SUCCESS );
+ assert(pcb_alloc(&init_pcb) == SUCCESS);
// fill in the necessary details
init_pcb->pid = PID_INIT;
@@ -335,32 +334,36 @@ int main( void ) {
init_pcb->priority = PRIO_HIGH;
// find the 'init' program
- prog_t *prog = user_locate( Init );
- assert( prog != NULL );
+ prog_t *prog = user_locate(Init);
+ assert(prog != NULL);
// command-line arguments for 'init'
const char *args[2] = { "init", NULL };
// load it
- assert( user_load(prog,init_pcb,args) == SUCCESS );
+ assert(user_load(prog, init_pcb, args) == SUCCESS);
// send it on its merry way
- schedule( init_pcb );
+ schedule(init_pcb);
#ifdef TRACE_CX
// if we're using a scrolling region, wait a bit more and then set it up
- delay( DELAY_7_SEC );
+ delay(DELAY_7_SEC);
// define a scrolling region in the top 7 lines of the screen
- cio_setscroll( 0, 7, 99, 99 );
+ cio_setscroll(0, 7, 99, 99);
// clear it
cio_clearscroll();
// clear the top line
- cio_puts_at( 0, 0, "* " );
+ cio_puts_at(
+ 0, 0,
+ "* ");
// separator
- cio_puts_at( 0, 6, "================================================================================" );
+ cio_puts_at(
+ 0, 6,
+ "================================================================================");
#endif
// switch to the "real" kernel page directory
@@ -372,10 +375,10 @@ int main( void ) {
** Finally, report that we're all done.
*/
- cio_puts( "System initialization complete.\n" );
- cio_puts( "-------------------------------\n" );
+ cio_puts("System initialization complete.\n");
+ cio_puts("-------------------------------\n");
- sio_enable( SIO_RX );
+ sio_enable(SIO_RX);
return 0;
}
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