elf sym loading

1 files changed, 0 insertions, 384 deletions

diff --git a/kernel/old/kernel.c b/kernel/old/kernel.c
deleted file mode 100644
index 14e8b02..0000000
--- a/kernel/old/kernel.c
+++ /dev/null
@@ -1,384 +0,0 @@
-/**
-** @file	kernel.c
-**
-** @author	CSCI-452 class of 20245
-**
-** @brief	Kernel support routines
-*/
-
-#define	KERNEL_SRC
-
-#include <common.h>
-#include <cio.h>
-#include <clock.h>
-#include <kmem.h>
-#include <procs.h>
-#include <sio.h>
-#include <syscalls.h>
-#include <user.h>
-#include <userids.h>
-#include <vm.h>
-
-/*
-** PRIVATE DEFINITIONS
-*/
-
-/*
-** PRIVATE DATA TYPES
-*/
-
-/*
-** PRIVATE GLOBAL VARIABLES
-*/
-
-/*
-** PUBLIC GLOBAL VARIABLES
-*/
-
-// 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
-
-/*
-** PRIVATE FUNCTIONS
-*/
-
-/*
-** PRIVATE FUNCTIONS
-*/
-
-/**
-** report - report the system configuration
-**
-** Prints configuration information about the OS on the console monitor.
-**
-** @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 );
-
-	// 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: "
-#ifdef RPT_INT_UNEXP
-		" R-uint"
-#endif
-#ifdef RPT_INT_MYSTERY
-		" R-mint"
-#endif
-#ifdef TRACE_CX
-		" CX"
-#endif
-#ifdef CONSOLE_STATS
-		" Cstats"
-#endif
-		); // end of cio_puts() call
-
-#ifdef SANITY
-	cio_printf( " SANITY = %d", SANITY );
-#endif
-#ifdef STATUS
-	cio_printf( " STATUS = %d", STATUS );
-#endif
-
-#if TRACE > 0
-	cio_printf( " TRACE = 0x%04x\n", TRACE );
-
-	// decode the trace settings if that was requested
-	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:"
-#if TRACING_PCB
-			" PCB"
-#endif
-#if TRACING_VM
-			 " VM"
-#endif
-#if TRACING_QUEUE
-			 " QUE"
-#endif
-#if TRACING_SCHED
-			 " SCHED"
-#endif
-#if TRACING_DISPATCH
-			 " DISPATCH"
-#endif
-#if TRACING_SYSCALLS
-			 " SCALL"
-#endif
-#if TRACING_SYSRETS
-			 " SRET"
-#endif
-#if TRACING_EXIT
-			 " EXIT"
-#endif
-#if TRACING_INIT
-			 " INIT"
-#endif
-#if TRACING_KMEM
-			 " KM"
-#endif
-#if TRACING_KMEM_FREELIST
-			 " KMFL"
-#endif
-#if TRACING_KMEM_INIT
-			 " KMIN"
-#endif
-#if TRACING_FORK
-			 " FORK"
-#endif
-#if TRACING_EXEC
-			 " EXEC"
-#endif
-#if TRACING_SIO_STAT
-			 " S_STAT"
-#endif
-#if TRACING_SIO_ISR
-			 " S_ISR"
-#endif
-#if TRACING_SIO_RD
-			 " S_RD"
-#endif
-#if TRACING_SIO_WR
-			 " S_WR"
-#endif
-#if TRACING_USER
-			 " USER"
-#endif
-#if TRACING_ELF
-			 " ELF"
-#endif
-			 ); // end of cio_puts() call
-	}
-#endif  /* TRACE > 0 */
-
-	cio_puts( "\n-------------------------------\n" );
-}
-
-
-#if defined(CONSOLE_STATS)
-/**
-** stats - callback routine for console statistics
-**
-** Called by the CIO module when a key is pressed on the
-** console keyboard.  Depending on the key, it will print
-** statistics on the console display, or will cause the
-** user shell process to be dispatched.
-**
-** 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 );
-		break;
-
-	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 );
-		break;
-
-	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 );
-		break;
-
-	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 );
-		// 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"
-		);
-		break;
-	}
-}
-#endif
-
-/*
-** PUBLIC FUNCTIONS
-*/
-
-/**
-** main - system initialization routine
-**
-** Called by the startup code immediately before returning into the
-** first user process.
-**
-** Making this type 'int' keeps the compiler happy.
-*/
-int main( void ) {
-
-	/*
-	** BOILERPLATE CODE - taken from basic framework
-	**
-	** Initialize interrupt stuff.
-	*/
-
-	init_interrupts();  // IDT and PIC initialization
-
-	/*
-	** Console I/O system.
-	**
-	** Does not depend on the other kernel modules, so we can
-	** initialize it before we initialize the kernel memory
-	** and queue modules.
-	*/
-
-#if defined(CONSOLE_STATS) 
-	cio_init( stats );
-#else
-	cio_init( NULL );	// no console callback routine
-#endif
-
-	cio_clearscreen();  // wipe out whatever is there
-
-	/*
-	** TERM-SPECIFIC CODE STARTS HERE
-	*/
-
-	/*
-	** Initialize various OS modules
-	**
-	** Other modules (clock, SIO, syscall, etc.) are expected to
-	** install their own ISRs in their initialization routines.
-	*/
-
-	cio_puts( "System initialization starting.\n" );
-	cio_puts( "-------------------------------\n" );
-
-	cio_puts( "Modules:" );
-
-	// call the module initialization functions, being
-	// careful to follow any module precedence requirements
-
-	km_init();		// MUST BE FIRST
-#if TRACING_KMEM || TRACING_KMEM_FREE
-	delay( DELAY_2_SEC );	// approximately
-#endif
-
-	// other module initialization calls here
-	clk_init();     // clock
-	pcb_init();     // process (PCBs, queues, scheduler)
-#if TRACING_PCB
-	delay( DELAY_2_SEC );
-#endif
-	sio_init();     // serial i/o
-	sys_init();     // system call
-#if TRACING_SYSCALLS || TRACING_SYSRETS
-	delay( DELAY_2_SEC );
-#endif
-	vm_init();      // virtual memory
-	user_init();    // user code handling
-
-	cio_puts( "\nModule initialization complete.\n" );
-	cio_puts( "-------------------------------\n" );
-
-	// report our configuration options
-	kreport( true );
-
-	delay( DELAY_3_SEC );
-
-	/*
-	** Other tasks typically performed here:
-	**
-	**	Enabling any I/O devices (e.g., SIO xmit/rcv)
-	*/
-
-	/*
-	** Create the initial user process
-	** 
-	** This code is largely stolen from the fork() and exec()
-	** implementations in syscalls.c; if those change, this must
-	** also change.
-	*/
-
-	// if we can't get a PCB, there's no use continuing!
-	assert( pcb_alloc(&init_pcb) == SUCCESS );
-
-	// fill in the necessary details
-	init_pcb->pid = PID_INIT;
-	init_pcb->state = STATE_NEW;
-	init_pcb->priority = PRIO_HIGH;
-
-	// find the 'init' program
-	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 );
-
-	// send it on its merry way
-	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 );
-
-	// define a scrolling region in the top 7 lines of the screen
-	cio_setscroll( 0, 7, 99, 99 );
-
-	// clear it
-	cio_clearscroll();
-
-	// clear the top line
-	cio_puts_at( 0, 0, "*                                                                               " );
-	// separator
-	cio_puts_at( 0, 6, "================================================================================" );
-#endif
-
-	// switch to the "real" kernel page directory
-	vm_set_kvm();
-
-	/*
-	** END OF TERM-SPECIFIC CODE
-	**
-	** Finally, report that we're all done.
-	*/
-
-	cio_puts( "System initialization complete.\n" );
-	cio_puts( "-------------------------------\n" );
-
-	sio_enable( SIO_RX );
-
-	return 0;
-}