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|
;; -----------------------------------------------------------------------
;;
;; Copyright 1994-2008 H. Peter Anvin - All Rights Reserved
;; Copyright 2009 Intel Corporation; author: H. Peter Anvin
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, Inc., 53 Temple Place Ste 330,
;; Boston MA 02111-1307, USA; either version 2 of the License, or
;; (at your option) any later version; incorporated herein by reference.
;;
;; -----------------------------------------------------------------------
;;
;; macros.inc
;;
;; Convenient macros
;;
%ifndef _MACROS_INC
%define _MACROS_INC
;
; Identify the module we're compiling; the "correct" should be defined
; in the module itself to 1
;
%ifdef IS_SYSLINUX
%define MY_NAME 'SYSLINUX'
%else
%define IS_SYSLINUX 0
%endif
%ifdef IS_MDSLINUX
%define MY_NAME 'MDSLINUX'
%else
%define IS_MDSLINUX 0
%endif
%ifdef IS_PXELINUX
%define MY_NAME 'PXELINUX'
%else
%define IS_PXELINUX 0
%endif
%ifdef IS_ISOLINUX
%define MY_NAME 'ISOLINUX'
%else
%define IS_ISOLINUX 0
%endif
%ifdef IS_EXTLINUX
%define MY_NAME 'EXTLINUX'
%else
%define IS_EXTLINUX 0
%endif
;
; Macros similar to res[bwd], but which works in the code segment (after
; section .text) or the data segment (section .data)
;
%macro zb 1.nolist
times %1 db 0
%endmacro
%macro zw 1.nolist
times %1 dw 0
%endmacro
%macro zd 1.nolist
times %1 dd 0
%endmacro
;
; Align with zero bytes in a progbits segment
;
%macro alignz 1.nolist
times (((%1) - (($-$$) % (%1))) % (%1)) db 0
%endmacro
;
; Macro to emit an unsigned decimal number as a string
;
%macro asciidec 1.nolist
%ifndef DEPEND ; Not safe for "depend"
%push asciidec
%assign %$v %1
%if %$v == 0
db '0'
%else
%assign %$dcount 0
%assign %$n %$v
%assign %$d 1
%rep 20
%if %$n != 0
%assign %$dcount %$dcount + 1
%assign %$n %$n / 10
%assign %$d %$d * 10
%endif
%endrep
%rep %$dcount
%assign %$d %$d / 10
db ((%$v / %$d) % 10) + '0'
%endrep
%endif
%pop
%endif
%endmacro
;
; Macros for network byte order of constants
;
%define htons(x) ( ( ((x) & 0FFh) << 8 ) + ( ((x) & 0FF00h) >> 8 ) )
%define ntohs(x) htons(x)
%define htonl(x) ( ( ((x) & 0FFh) << 24) + ( ((x) & 0FF00h) << 8 ) + ( ((x) & 0FF0000h) >> 8 ) + ( ((x) & 0FF000000h) >> 24) )
%define ntohl(x) htonl(x)
;
; ASCII
;
CR equ 13 ; Carriage Return
LF equ 10 ; Line Feed
FF equ 12 ; Form Feed
BS equ 8 ; Backspace
%endif ; _MACROS_INC
|
