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(Redoing check-in lost by SourceForge's failure.)
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#include "registers.h"
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#include "main.h"
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#include "hooks.h"
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/*
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* This file provides the basic entry points from assembly code. See
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* README.i386 for a description of the entry code path.
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*
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*/
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/*
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* arch_main() : call main() and then exit via whatever exit mechanism
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* the prefix requested.
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*
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*/
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void arch_main ( struct i386_all_regs *ix86 ) {
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void (*exit_path) ( struct i386_all_regs *ix86 );
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/* Determine exit path requested by prefix */
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exit_path = ( typeof ( exit_path ) ) ix86->regs.eax;
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/* Call to main() */
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ix86->regs.eax = main();
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if ( exit_path ) {
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/* Prefix requested that we use a particular function
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* as the exit path, so we call this function, which
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* must not return.
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*/
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exit_path ( ix86 );
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}
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}
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#ifndef HOOKS_H
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#define HOOKS_H
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extern void arch_main ( struct i386_all_regs *ix86 );
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#endif /* HOOKS_H */
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#ifndef RELOCATE_H
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#define RELOCATE_H
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/* relocate() is conceptually impossible with KEEP_IT_REAL */
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#ifndef KEEP_IT_REAL
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#include <gpxe/tables.h>
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/* An entry in the post-relocation function table */
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struct post_reloc_fn {
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void ( *post_reloc ) ( void );
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};
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/* Use double digits to avoid problems with "10" < "9" on alphabetic sort */
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#define POST_RELOC_LIBRM 00
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/* Macro for creating a post-relocation function table entry */
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#define POST_RELOC_FN( order, post_reloc_func ) \
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struct post_reloc_fn PREFIX_OBJECT(post_reloc_fn__) \
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__table ( post_reloc_fn, order ) = { \
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.post_reloc = post_reloc_func, \
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};
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#endif
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#endif /* RELOCATE_H */
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#ifndef INIT_H
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#define INIT_H
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#include "stddef.h" /* for NULL */
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#include <gpxe/tables.h>
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/*
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* In order to avoid having objects dragged in just because main()
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* calls their initialisation function, we allow each object to
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* specify that it has a function that must be called to initialise
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* that object. The function call_init_fns() will call all the
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* included objects' initialisation functions.
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*
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* Objects that require initialisation should include init.h and
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* register the initialisation function using INIT_FN().
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*
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* Objects may register up to three functions: init, reset and exit.
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* init gets called only once, at the point that Etherboot is
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* initialised (before the call to main()). reset gets called between
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* each boot attempt. exit gets called only once, just before the
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* loaded OS starts up (or just before Etherboot exits, if it exits,
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* or when the PXE NBP calls UNDI_SHUTDOWN, if it's a PXE NBP).
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*
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* The syntax is:
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* INIT_FN ( init_order, init_function, reset_function, exit_function );
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* where init_order is an ordering taken from the list below. Any
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* function may be left as NULL.
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*/
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/* An entry in the initialisation function table */
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struct init_fn {
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void ( *init ) ( void );
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void ( *reset ) ( void );
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void ( *exit ) ( void );
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};
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/* Use double digits to avoid problems with "10" < "9" on alphabetic sort */
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#define INIT_LIBRM 01
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#define INIT_CONSOLE 02
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#define INIT_CPU 03
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#define INIT_TIMERS 04
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#define INIT_PCIBIOS 05
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#define INIT_MEMSIZES 06
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#define INIT_RELOCATE 07
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#define INIT_LOADBUF 08
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#define INIT_PCMCIA 09
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#define INIT_HEAP 10
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#define INIT_RPC 11
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/* Macro for creating an initialisation function table entry */
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#define INIT_FN( init_order, init_func, reset_func, exit_func ) \
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struct init_fn PREFIX_OBJECT(init_fn__) \
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__table ( init_fn, init_order ) = { \
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.init = init_func, \
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.reset = reset_func, \
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.exit = exit_func, \
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};
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/* Function prototypes */
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void call_init_fns ( void );
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void call_reset_fns ( void );
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void call_exit_fns ( void );
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#endif /* INIT_H */
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