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