asm.m4

changequote(<,>)dnl
dnl (progn (modify-syntax-entry ?< "(>") (modify-syntax-entry ?> ")<") )

dnl FORTRAN style comment character
define(<C>, <
dnl>)dnl

dnl Including files from the srcdir
define(<include_src>, <include(srcdir/$1)>)dnl

dnl Pseudo ops

define(<PROLOGUE>,
<ifelse(ELF_STYLE,yes,
<.globl C_NAME($1)
.type C_NAME($1),TYPE_FUNCTION
C_NAME($1):>,
<.globl C_NAME($1)
C_NAME($1):>)>)

define(<EPILOGUE>,
<ifelse(ELF_STYLE,yes,
<.size C_NAME($1), . - C_NAME($1)>,<>)>)

dnl Argument to ALIGN is always logarithmic
dnl Can't use << operator with our choice of quote characters...
define(<ALIGN>,
<.align ifelse(ALIGN_LOG,yes,$1,eval(2 ** $1))>)

dnl Struct defining macros

dnl STRUCTURE(prefix) 
define(<STRUCTURE>, <define(<SOFFSET>, 0)define(<SPREFIX>, <$1>)>)dnl

dnl STRUCT(name, size)
define(<STRUCT>,
<define(SPREFIX<_>$1, SOFFSET)dnl
 define(<SOFFSET>, eval(SOFFSET + ($2)))>)dnl

dnl UCHAR(name)
define(<UCHAR>, <STRUCT(<$1>, 1)>)dnl

dnl UNSIGNED(name)
define(<UNSIGNED>, <STRUCT(<$1>, 4)>)dnl

dnl Offsets in arcfour_ctx
STRUCTURE(ARCFOUR)
  STRUCT(S, 256)
  UCHAR(I)
  UCHAR(J)

dnl Offsets in aes_ctx and aes_table
STRUCTURE(AES)
  STRUCT(KEYS, 4*60)
  UNSIGNED(NROUNDS)

define(AES_SBOX_SIZE,	256)dnl
define(AES_TABLE_SIZE,	1024)dnl

STRUCTURE(AES)
  STRUCT(SBOX, AES_SBOX_SIZE)
  STRUCT(TABLE0, AES_TABLE_SIZE)
  STRUCT(TABLE1, AES_TABLE_SIZE)
  STRUCT(TABLE2, AES_TABLE_SIZE)
  STRUCT(TABLE3, AES_TABLE_SIZE)