loader.c File Reference

#include <loader.h>
#include <Drivers/uart.h>
#include <string.h>
#include <Mm/pmmngr.h>
#include <Mm/vmmngr.h>
#include <Mm/kmalloc.h>
#include <aucon.h>
#include <Fs/vfs.h>
#include <pe.h>
#include <Hal/AA64/sched.h>
#include <Hal/AA64/aa64lowlevel.h>
#include <ftmngr.h>

Include dependency graph for loader.c:

Macros
#define	LOADER_SCRATCH_VIRT   0xFFFFC00000700000
#define	PUSH(stack, type, item)
#define	PUSHALIGN(stack, align)
#define	PUSHSTRING(stack, s)

Functions
void	testFunc ()
void	AuProcessEntUser (uint64_t rcx)
	AuProcessEntUser – main kernel thread call in order to enter user for processes.
bool	setStk ()
int	AuLoadExecToProcess (AuProcess *proc, char *filename, int argc, char **argv)
	AuLoadExecToProcess – loads an executable to the process.
void	AuInitialiseLoader ()
	AuInitialiseLoader – initialize the loader and allocate atleast 1 MiB for scratch use.

Variables
uint64_t *	_ldr_scratchBuffer
uint64_t	physFrames [64]

Detailed Description

BSD 2-Clause License

Copyright (c) 2022-2023, Manas Kamal Choudhury All rights reserved.

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

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 HOLDER 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.

Macro Definition Documentation

LOADER_SCRATCH_VIRT

#define LOADER_SCRATCH_VIRT   0xFFFFC00000700000

PUSH

#define PUSH	(		stack,
			type,
			item
	)

Value:

    do { \
    stack -= sizeof(type); \
    while (stack & (sizeof(type)-1))stack--; \
    *((type*)(stack)) = (item); \
}while (0);

PUSHALIGN

#define PUSHALIGN	(		stack,
			align
	)

Value:

   do {\
   stack &= ~((align)-1); \
}while(0)

PUSHSTRING

#define PUSHSTRING	(		stack,
			s
	)

Value:

    do { \
    size_t l = strlen(s) - 1; \
    do {\
       PUSH2(stack, char, s[l]); \
       l--; \
    } while (l >= 0); \
}while (0)

Function Documentation

AuInitialiseLoader()

void AuInitialiseLoader

(

)

AuInitialiseLoader – initialize the loader and allocate atleast 1 MiB for scratch use.

AuLoadExecToProcess()

int AuLoadExecToProcess	(	AuProcess *	proc,
		char *	filename,
		int	argc,
		char **	argv
	)

AuLoadExecToProcess – loads an executable to the process.

Parameters

proc	– pointer to process data structure
filename	– executable file name
argc	– number of arguments
argv	– array of argument in strings

Returns

0 on success -1 on failure

AuProcessEntUser()

void AuProcessEntUser

(

uint64_t

rcx

)

AuProcessEntUser – main kernel thread call in order to enter user for processes.

Parameters

rcx	– user entry structure

setStk()

bool setStk ( )

extern

testFunc()

void testFunc

(

)

Variable Documentation

_ldr_scratchBuffer

uint64_t* _ldr_scratchBuffer

physFrames

uint64_t physFrames[64]