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/*
* Creation Date: <2010/04/02 13:00:00 mcayland>
* Time-stamp: <2010/04/02 13:00:00 mcayland>
*
* <initprogram.c>
*
* C implementation of (init-program) word
*
* Copyright (C) 2010 Mark Cave-Ayland (mark.cave-ayland@siriusit.co.uk)
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* version 2
*
*/
#include "config.h"
#include "kernel/kernel.h"
#include "libopenbios/bindings.h"
#include "libopenbios/initprogram.h"
/* Because the a.out loader requires platform-specific headers */
#ifdef CONFIG_LOADER_AOUT
#include "libopenbios/aout_load.h"
#endif
#include "libopenbios/bootcode_load.h"
#include "libopenbios/bootinfo_load.h"
#include "libopenbios/elf_load.h"
#include "libopenbios/fcode_load.h"
#include "libopenbios/forth_load.h"
#include "libopenbios/prep_load.h"
#include "libopenbios/xcoff_load.h"
void init_program(void)
{
/* Get the value of load-base and use it to determine the correct loader
to use */
ucell addr;
feval("load-base");
addr = POP();
#ifdef CONFIG_LOADER_AOUT
if (is_aout((struct exec *)cell2pointer(addr))) {
aout_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_BOOTCODE
if (is_bootcode((char *)cell2pointer(addr))) {
bootcode_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_BOOTINFO
if (is_bootinfo((char *)cell2pointer(addr))) {
bootinfo_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_ELF
if (is_elf((Elf_ehdr *)cell2pointer(addr))) {
elf_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_FCODE
if (is_fcode((unsigned char *)cell2pointer(addr))) {
fcode_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_FORTH
if (is_forth((char *)cell2pointer(addr))) {
forth_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_XCOFF
if (is_xcoff((COFF_filehdr_t *)cell2pointer(addr))) {
xcoff_init_program();
return;
}
#endif
#ifdef CONFIG_LOADER_PREP
if (is_prep((char *)cell2pointer(addr))) {
prep_init_program();
return;
}
#endif
}
void init_fcode_context(void)
{
/* Execute FCode payload */
printk("Evaluating FCode...\n");
fword("load-base");
PUSH(1);
fword("byte-load");
}
void init_forth_context(void)
{
/* Execute Forth payload */
printk("Evaluating Forth...\n");
fword("load-base");
feval("load-state >ls.file-size @");
fword("eval2");
}
void go(void)
{
/* Switch to the current context */
start_elf();
}
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