/*****************************************************************************************
Copyright (c) 2002-2004 The UbixOS Project
All rights reserved.
Redistribution and use in source and binary forms, with or without modification, are
permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice, this list of
conditions, the following disclaimer and the list of authors. Redistributions in binary
form must reproduce the above copyright notice, this list of conditions, the following
disclaimer and the list of authors in the documentation and/or other materials provided
with the distribution. Neither the name of the UbixOS Project nor the names of its
contributors may be used to endorse or promote products derived from this software
without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY
EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
$Id$
*****************************************************************************************/
#include <ubixos/exec.h>
#include <ubixos/sched.h>
#include <ubixos/ld.h>
#include <ubixos/kpanic.h>
#include <ubixos/endtask.h>
#include <mm/vmm.h>
#include <lib/kmalloc.h>
#include <lib/kprintf.h>
#include <lib/string.h>
#include <assert.h>
/*****************************************************************************************
Function: execThread(void (*)(void),int,char *);
Description: This function will create a thread from code in the current memory space
Notes:
05/19/04 - This does not work the way I want it to it still makes a copy of kernel space
so do not use out side of kernel space
*****************************************************************************************/
uInt32 execThread(void (* tproc)(void),uInt32 stack,char *arg) {
kTask_t * newProcess = 0x0;
/* Find A New Thread */
newProcess = schedNewTask();
assert(newProcess);
if (stack < 0x100000)
kpanic("exec: stack not in valid area: [0x%X]\n",stack);
/* Set All The Correct Thread Attributes */
newProcess->tss.back_link = 0x0;
newProcess->tss.esp0 = 0x0;
newProcess->tss.ss0 = 0x0;
newProcess->tss.esp1 = 0x0;
newProcess->tss.ss1 = 0x0;
newProcess->tss.esp2 = 0x0;
newProcess->tss.ss2 = 0x0;
newProcess->tss.cr3 = (unsigned int)kernelPageDirectory;
newProcess->tss.eip = (unsigned int)tproc;
newProcess->tss.eflags = 0x206;
newProcess->tss.esp = stack;
newProcess->tss.ebp = stack;
newProcess->tss.esi = 0x0;
newProcess->tss.edi = 0x0;
newProcess->tss.es = 0x10;
newProcess->tss.cs = 0x08;
newProcess->tss.ss = 0x10;
newProcess->tss.ds = 0x10;
newProcess->tss.fs = 0x10;
newProcess->tss.gs = 0x10;
newProcess->tss.ldt = 0x18;
newProcess->tss.trace_bitmap = 0x0000;
newProcess->tss.io_map = 0x8000;
newProcess->oInfo.vmStart = 0x6400000;
newProcess->imageFd = 0x0;
/* Set up default stack for thread here filled with arg list 3 times */
asm volatile(
"pusha \n"
"movl %%esp,%%ecx \n"
"movl %1,%%eax \n"
"movl %%eax,%%esp \n"
"pushl %%ebx \n"
"pushl %%ebx \n"
"pushl %%ebx \n"
"movl %%esp,%%eax \n"
"movl %%eax,%1 \n"
"movl %%ecx,%%esp \n"
"popa \n"
:
: "b" (arg),"m" (newProcess->tss.esp)
);
/* Put new thread into the READY state */
sched_setStatus(newProcess->id,READY);
/* Return with the new process ID */
return((uInt32)newProcess);
}
/*****************************************************************************************
Function: void execFile(char *file);
Description: This Function Executes A Kile Into A New VM Space With Out
Having To Fork
Notes:
07/30/02 - I Have Made Some Heavy Changes To This As Well As Fixed A Few
Memory Leaks The Memory Allocated To Load The Binary Into Is
Now Unmapped So It Can Be Used Again And Not Held Onto Until
The Program Exits
07/30/02 - Now I Have To Make A Better Memory Allocator So We Can Set Up
The Freshly Allocated Pages With The Correct Permissions
*****************************************************************************************/
/*
void execFile(char *file,int argc,char **argv,int console) {
int i = 0x0;
int x = 0x0;
fileDescriptor *tmpFd = 0x0;
elfHeader *binaryHeader = 0x0;
elfProgramHeader *programHeader = 0x0;
// Get A New Task For This Proccess
_current = schedNewTask();
assert(_current);
_current->gid = 0x0;
_current->uid = 0x0;
_current->term = tty_find(console);
if (_current->term == 0x0)
kpanic("Error: invalid console\n");
// Set tty ownership
_current->term->owner = _current->id;
// Now We Must Create A Virtual Space For This Proccess To Run In
_current->tss.cr3 = (uInt32)vmmCreateVirtualSpace(_current->id);
// To Better Load This Application We Will Switch Over To Its VM Space
asm volatile(
"movl %0,%%eax \n"
"movl %%eax,%%cr3 \n"
: : "d" ((uInt32 *)(_current->tss.cr3))
);
// Lets Find The File
tmpFd = fopen(file,"r");
// If We Dont Find the File Return
if (tmpFd == 0x0) {
// kprintf("Exec Format Error: Binary File Not Executable.\n");
fclose(tmpFd);
return;
}
if (tmpFd->perms == 0x0) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
fclose(tmpFd);
return;
}
// Load ELF Header
binaryHeader = (elfHeader *)kmalloc(sizeof(elfHeader));
//kprintf(">a:%i:0x%X:0x%X<",sizeof(elfHeader),binaryHeader,tmpFd);
fread(binaryHeader,sizeof(elfHeader),1,tmpFd);
//kprintf(">b<");
// Check If App Is A Real Application
if ((binaryHeader->eIdent[1] != 'E') && (binaryHeader->eIdent[2] != 'L') && (binaryHeader->eIdent[3] != 'F')) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
else if (binaryHeader->eType != 2) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
else if (binaryHeader->eEntry == 0x300000) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
// Load The Program Header(s)
programHeader = (elfProgramHeader *)kmalloc(sizeof(elfProgramHeader)*binaryHeader->ePhnum);
fseek(tmpFd,binaryHeader->ePhoff,0);
//kprintf(">c:%i:0x%X:0x%X<",sizeof(elfProgramHeader)*binaryHeader->ePhnum,programHeader,tmpFd);
fread(programHeader,(sizeof(elfProgramHeader)*binaryHeader->ePhnum),1,tmpFd);
//kprintf(">d<");
// Loop Through The Header And Load Sections Which Need To Be Loaded
for (i=0;i<binaryHeader->ePhnum;i++) {
if (programHeader[i].phType == 1) {
//
//Allocate Memory Im Going To Have To Make This Load Memory With Correct
//Settings so it helps us in the future
for (x = 0x0;x < (programHeader[i].phMemsz+4095);x += 0x1000) {
// Make readonly and read/write !!!
if (vmm_remapPage(vmmFindFreePage(_current->id),((programHeader[i].phVaddr & 0xFFFFF000) + x),PAGE_DEFAULT) == 0x0)
kpanic("Error: vmmFindFreePage Failed\n");
memset((void *)((programHeader[i].phVaddr & 0xFFFFF000) + x),0x0,0x1000);
}
_current->oInfo.vmStart = ((programHeader[i].phVaddr & 0xFFFFF000) + 0x1900000);
// Now Load Section To Memory
fseek(tmpFd,programHeader[i].phOffset,0);
fread((void *)programHeader[i].phVaddr,programHeader[i].phFilesz,1,tmpFd);
if ((programHeader[i].phFlags & 0x2) != 0x2) {
for (x = 0x0;x < (programHeader[i].phMemsz+4095);x += 0x1000) {
if ((vmm_setPageAttributes((programHeader[i].phVaddr & 0xFFFFF000) + x,PAGE_PRESENT | PAGE_USER)) != 0x0)
kpanic("Error: vmm_setPageAttributes failed, File: %s, Line: %i\n",__FILE__,__LINE__);
}
}
}
}
// Set Virtual Memory Start
_current->oInfo.vmStart = ((programHeader[i].phVaddr & 0xFFFFF000) + 0x1900000);
// Task Stack 0x2000 bytes long
vmm_remapPage(vmmFindFreePage(_current->id),0x5DC000,PAGE_DEFAULT | PAGE_STACK);
vmm_remapPage(vmmFindFreePage(_current->id),0x5DB000,PAGE_DEFAULT | PAGE_STACK);
// Kernel Stack 0x2000 bytes long
vmm_remapPage(vmmFindFreePage(_current->id),0x5CC000,KERNEL_PAGE_DEFAULT | PAGE_STACK);
vmm_remapPage(vmmFindFreePage(_current->id),0x5CB000,KERNEL_PAGE_DEFAULT | PAGE_STACK);
// Set All The Proper Information For The Task
_current->tss.back_link = 0x0;
_current->tss.esp0 = 0x5CC000;
_current->tss.ss0 = 0x10;
_current->tss.esp1 = 0x0;
_current->tss.ss1 = 0x0;
_current->tss.esp2 = 0x0;
_current->tss.ss2 = 0x0;
_current->tss.eip = (long)binaryHeader->eEntry;
_current->tss.eflags = 0x206;
_current->tss.esp = 0x5DD000-12;
_current->tss.ebp = 0x5DD000;
_current->tss.esi = 0x0;
_current->tss.edi = 0x0;
// Set these up to be ring 3 tasks
_current->tss.es = 0x30+3;
_current->tss.cs = 0x28+3;
_current->tss.ss = 0x30+3;
_current->tss.ds = 0x30+3;
_current->tss.fs = 0x30+3;
_current->tss.gs = 0x30+3;
_current->tss.ldt = 0x18;
_current->tss.trace_bitmap = 0x0000;
_current->tss.io_map = 0x8000;
sched_setStatus(_current->id,READY);
kfree(binaryHeader);
kfree(programHeader);
fclose(tmpFd);
// Switch Back To The Kernels VM Space
asm volatile(
"movl %0,%%eax \n"
"movl %%eax,%%cr3 \n"
: : "d" ((uInt32 *)(kernelPageDirectory))
);
// Finally Return
return;
}
*/
/*****************************************************************************************
Function: void sysExec();
Description: This Is The System Call To Execute A New Task
Notes:
04-22-03 - It Now Loads Sections Not The Full File
*****************************************************************************************/
/*
void sysExec(char *file,int argc,char **argv) {
int i = 0x0;
int x = 0x0;
uInt32 *tmp = 0x0;
uInt32 ldAddr = 0x0;
fileDescriptor *tmpFd = 0x0;
elfHeader *binaryHeader = 0x0;
elfProgramHeader *programHeader = 0x0;
elfSectionHeader *sectionHeader = 0x0;
elfDynamic *elfDynamicS = 0x0;
tmpFd = fopen(file,"r");
_current->imageFd = tmpFd;
// If We Dont Find the File Return
if (tmpFd == 0x0) {
kprintf("Couldn't open file %s\n",file);
return;
}
if (tmpFd->perms == 0) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
fclose(tmpFd);
return;
}
// Load ELF Header
if ((binaryHeader = (elfHeader *)kmalloc(sizeof(elfHeader))) == 0x0)
endTask(_current->id);
//kprintf("A");
fread(binaryHeader,sizeof(elfHeader),1,tmpFd);
//kprintf("B");
// Set sectionHeader To Point To Loaded Binary To We Can Gather Info
// Check If App Is A Real Application
if ((binaryHeader->eIdent[1] != 'E') && (binaryHeader->eIdent[2] != 'L') && (binaryHeader->eIdent[3] != 'F')) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
else if (binaryHeader->eType != 2) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
else if (binaryHeader->eEntry == 0x300000) {
//kprintf("Exec Format Error: Binary File Not Executable.\n");
kfree(binaryHeader);
fclose(tmpFd);
return;
}
// Load The Program Header(s)
if ((programHeader = (elfProgramHeader *)kmalloc(sizeof(elfProgramHeader)*binaryHeader->ePhnum)) == 0x0)
endTask(_current->id);
assert(programHeader);
fseek(tmpFd,binaryHeader->ePhoff,0);
fread(programHeader,(sizeof(elfProgramHeader)*binaryHeader->ePhnum),1,tmpFd);
if ((sectionHeader = (elfSectionHeader *)kmalloc(sizeof(elfSectionHeader)*binaryHeader->eShnum)) == 0x0)
endTask(_current->id);
assert(sectionHeader);
fseek(tmpFd,binaryHeader->eShoff,0);
fread(sectionHeader,sizeof(elfSectionHeader)*binaryHeader->eShnum,1,tmpFd);
// Loop Through The Header And Load Sections Which Need To Be Loaded
for (i=0;i<binaryHeader->ePhnum;i++) {
if (programHeader[i].phType == 1) {
//
//Allocate Memory Im Going To Have To Make This Load Memory With Correct
//Settings so it helps us in the future
for (x=0;x<(programHeader[i].phMemsz+4095);x += 0x1000) {
// Make readonly and read/write !!!
if (vmm_remapPage(vmmFindFreePage(_current->id),((programHeader[i].phVaddr & 0xFFFFF000) + x),PAGE_DEFAULT) == 0x0)
kpanic("Error: vmmFindFreePage Failed\n");
memset((void *)((programHeader[i].phVaddr & 0xFFFFF000) + x),0x0,0x1000);
}
_current->oInfo.vmStart = ((programHeader[i].phVaddr & 0xFFFFF000) + 0x1900000);
// Now Load Section To Memory
fseek(tmpFd,programHeader[i].phOffset,0);
fread((void *)programHeader[i].phVaddr,programHeader[i].phFilesz,1,tmpFd);
if ((programHeader[i].phFlags & 0x2) != 0x2) {
for (x = 0x0;x < (programHeader[i].phMemsz+4095);x += 0x1000) {
if ((vmm_setPageAttributes((programHeader[i].phVaddr & 0xFFFFF000) + x,PAGE_PRESENT | PAGE_USER)) != 0x0)
kpanic("Error: vmm_setPageAttributes failed, File: %s,Line: %i\n",__FILE__,__LINE__);
}
}
}
else if (programHeader[i].phType == 2) {
//newLoc = (char *)programHeader[i].phVaddr;
elfDynamicS = (elfDynamic *)programHeader[i].phVaddr;
fseek(tmpFd,programHeader[i].phOffset,0);
fread((void *)programHeader[i].phVaddr,programHeader[i].phFilesz,1,tmpFd);
}
else if (programHeader[i].phType == 3) {
ldAddr = ldEnable();
}
}
if (elfDynamicS != 0x0) {
for (i=0;i<12;i++) {
if (elfDynamicS[i].dynVal == 0x3) {
tmp = (uInt32 *)elfDynamicS[i].dynPtr;
if (tmp == 0x0)
kpanic("tmp: NULL\n");
tmp[2] = (uInt32)ldAddr;
tmp[1] = (uInt32)tmpFd;
break;
}
}
}
// Adjust iframe
tmp = (uInt32 *)_current->tss.esp0 - 5;
tmp[0] = binaryHeader->eEntry;
tmp[3] = 0x5DD000-12;
tmp = (uInt32 *)0x5DD000 - 2;
tmp[0] = argc;
tmp[1] = (uInt32)argv;
// Now That We Relocated The Binary We Can Unmap And Free Header Info
kfree(binaryHeader);
kfree(programHeader);
return;
}
*/
/***
END
***/
