basemem.h File Reference

Base memory allocation. More...

#include <stdint.h>
#include <realmode.h>
#include <bios.h>

Go to the source code of this file.

Functions
	FILE_LICENCE (GPL2_OR_LATER_OR_UBDL)
static unsigned int	get_fbms (void)
	Read the BIOS free base memory counter. More...
void	set_fbms (unsigned int new_fbms)
	Set the BIOS free base memory counter. More...

Detailed Description

Base memory allocation.

Definition in file basemem.h.

Function Documentation

FILE_LICENCE()

FILE_LICENCE

(

GPL2_OR_LATER_OR_UBDL

)

get_fbms()

static unsigned int get_fbms ( void  )

inlinestatic

Read the BIOS free base memory counter.

Return values

fbms	Free base memory counter (in kB)

Definition at line 21 of file basemem.h.

                                             {
        uint16_t fbms;

        get_real ( fbms, BDA_SEG, BDA_FBMS );
        return fbms;
}

References BDA_FBMS, BDA_SEG, and get_real.

Referenced by basememsize(), com32_exec_loop(), comboot_init_psp(), hide_basemem(), hide_etherboot(), undi_load(), and undi_unload().

set_fbms()

void set_fbms

(

unsigned int

new_fbms

)

Set the BIOS free base memory counter.

Parameters

new_fbms

New free base memory counter (in kB)

Definition at line 43 of file basemem.c.

                                        {
        uint16_t fbms = new_fbms;

        /* Update the BIOS memory counter */
        put_real ( fbms, BDA_SEG, BDA_FBMS );

        /* Update our hidden memory region map */
        hide_basemem();
}

References BDA_FBMS, BDA_SEG, hide_basemem(), and put_real.

Referenced by undi_load(), and undi_unload().