exec.c File Reference

#include <ubixos/exec.h>
#include <sys/elf.h>
#include <ubixos/ld.h>
#include <ubixos/kpanic.h>
#include <ubixos/endtask.h>
#include <vmm/vmm.h>
#include <lib/kmalloc.h>
#include <lib/kprintf.h>
#include <lib/string.h>
#include <assert.h>

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Macros
#define	AT_BASE   7 /* Interpreter's base address. */
#define	AT_ENTRY   9 /* Where interpreter should transfer control. */
#define	AT_EXECFD   2 /* File descriptor of program to load. */
#define	AT_FLAGS   8 /* Flags (unused for i386). */
#define	AT_IGNORE   1 /* Ignored entry. */
#define	AT_NULL   0 /* Terminates the vector. */
#define	AT_PAGESZ   6 /* Page size in bytes. */
#define	AT_PHDR   3 /* Program header of program already loaded. */
#define	AT_PHENT   4 /* Size of each program header entry. */
#define	AT_PHNUM   5 /* Number of program header entries. */
#define	AUXARGS_ENTRY(pos, id, val)   {*pos = id;pos++; *pos = val;pos++;}
#define	STACK_ADDR   0xC800000

Functions
void	execFile (char *file, int argc, char **argv, int console)
uInt32	execThread (void(*tproc)(void), uInt32 stack, char *arg)
void	sys_exec (char *file, char *ap)
	New exec... More...
void	sysExec (char *file, char *ap)

Macro Definition Documentation

AT_BASE

#define AT_BASE   7 /* Interpreter's base address. */

Definition at line 49 of file exec.c.

AT_ENTRY

#define AT_ENTRY   9 /* Where interpreter should transfer control. */

Definition at line 51 of file exec.c.

AT_EXECFD

#define AT_EXECFD   2 /* File descriptor of program to load. */

Definition at line 44 of file exec.c.

AT_FLAGS

#define AT_FLAGS   8 /* Flags (unused for i386). */

Definition at line 50 of file exec.c.

AT_IGNORE

#define AT_IGNORE   1 /* Ignored entry. */

Definition at line 43 of file exec.c.

AT_NULL

#define AT_NULL   0 /* Terminates the vector. */

Definition at line 42 of file exec.c.

AT_PAGESZ

#define AT_PAGESZ   6 /* Page size in bytes. */

Definition at line 48 of file exec.c.

AT_PHDR

#define AT_PHDR   3 /* Program header of program already loaded. */

Definition at line 45 of file exec.c.

AT_PHENT

#define AT_PHENT   4 /* Size of each program header entry. */

Definition at line 46 of file exec.c.

AT_PHNUM

#define AT_PHNUM   5 /* Number of program header entries. */

Definition at line 47 of file exec.c.

AUXARGS_ENTRY

#define AUXARGS_ENTRY	(		pos,
			id,
			val
	)		{*pos = id;pos++; *pos = val;pos++;}

Definition at line 54 of file exec.c.

STACK_ADDR

#define STACK_ADDR   0xC800000

Definition at line 40 of file exec.c.

Function Documentation

execFile()

void execFile	(	char *	file,
		int	argc,
		char **	argv,
		int	console
	)

Definition at line 153 of file exec.c.

References _current, assert, tssStruct::back_link, tssStruct::cr3, tssStruct::cs, tssStruct::ds, tssStruct::ebp, tssStruct::edi, tssStruct::eflags, tssStruct::eip, tssStruct::es, tssStruct::esi, tssStruct::esp, tssStruct::esp0, tssStruct::esp1, tssStruct::esp2, fclose(), fopen(), fread(), tssStruct::fs, fseek(), taskStruct::gid, tssStruct::gs, taskStruct::id, tssStruct::io_map, K_PANIC, KERNEL_PAGE_DEFAULT, kernelPageDirectory, kfree(), kmalloc(), kpanic(), kprintf(), tssStruct::ldt, memset(), taskStruct::oInfo, tty_termNode::owner, PAGE_DEFAULT, PAGE_PRESENT, PAGE_STACK, PAGE_USER, fileDescriptor::perms, READY, sched_setStatus(), schedNewTask(), tssStruct::ss, tssStruct::ss0, tssStruct::ss1, tssStruct::ss2, STACK_ADDR, taskStruct::td, taskStruct::term, tssStruct::trace_bitmap, taskStruct::tss, tty_find(), taskStruct::uid, thread::vm_daddr, vmm_findFreePage(), vmm_remapPage(), vmm_setPageAttributes(), and osInfo::vmStart.

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execThread()

uInt32 execThread	(	void(*)(void)	tproc,
		uInt32	stack,
		char *	arg
	)

Definition at line 66 of file exec.c.

References assert, tssStruct::back_link, tssStruct::cr3, tssStruct::cs, tssStruct::ds, tssStruct::ebp, tssStruct::edi, tssStruct::eflags, tssStruct::eip, tssStruct::es, tssStruct::esi, tssStruct::esp, tssStruct::esp0, tssStruct::esp1, tssStruct::esp2, tssStruct::fs, tssStruct::gs, taskStruct::id, tssStruct::io_map, kernelPageDirectory, kpanic(), tssStruct::ldt, taskStruct::oInfo, READY, sched_setStatus(), schedNewTask(), tssStruct::ss, tssStruct::ss0, tssStruct::ss1, tssStruct::ss2, tssStruct::trace_bitmap, taskStruct::tss, and osInfo::vmStart.

Referenced by sdeThread(), systemTask(), and ubthread_create().

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sys_exec()

void sys_exec	(	char *	file,
		char *	ap
	)

New exec...

copy in arg strings

Clean the virtual of COW pages left over from the fork

Adjust iframe

build argc and argv[]

Build ENV

Definition at line 551 of file exec.c.

Referenced by sys_execve().

sysExec()

void sysExec	(	char *	file,
		char *	ap
	)

Clean the virtual of COW pages left over from the fork

Adjust iframe

build argc and argv[]

Definition at line 340 of file exec.c.

References _current, assert, i386_frame::ebp, i386_frame::eip, endTask(), tssStruct::esp0, fclose(), taskStruct::files, fopen(), fread(), fseek(), taskStruct::id, K_PANIC, kfree(), kmalloc(), kpanic(), kprintf(), ldEnable(), memset(), taskStruct::oInfo, PAGE_DEFAULT, PAGE_PRESENT, PAGE_SHIFT, PAGE_SIZE, PAGE_USER, fileDescriptor::perms, PT_DYNAMIC, PT_INTERP, PT_LOAD, round_page, STACK_ADDR, strcpy(), strlen(), taskStruct::td, trunc_page, taskStruct::tss, i386_frame::user_esp, thread::vm_daddr, thread::vm_dsize, VM_TASK, vmm_cleanVirtualSpace(), vmm_findFreePage(), vmm_remapPage(), vmm_setPageAttributes(), and osInfo::vmStart.

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