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divert(-1)
dnl m4 macros for 68k assembler.
dnl Copyright 2001-2003 Free Software Foundation, Inc.
dnl This file is part of the GNU MP Library.
dnl
dnl The GNU MP Library is free software; you can redistribute it and/or modify
dnl it under the terms of either:
dnl
dnl * the GNU Lesser General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl or
dnl
dnl * the GNU General Public License as published by the Free Software
dnl Foundation; either version 2 of the License, or (at your option) any
dnl later version.
dnl
dnl or both in parallel, as here.
dnl
dnl The GNU MP Library is distributed in the hope that it will be useful, but
dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
dnl for more details.
dnl
dnl You should have received copies of the GNU General Public License and the
dnl GNU Lesser General Public License along with the GNU MP Library. If not,
dnl see https://www.gnu.org/licenses/.
dnl The default m4 `#' commenting interferes with the assembler syntax for
dnl immediates. `|' would be correct, but it interferes with "||" in
dnl eval(). Would like to disable commenting, but that's not possible (see
dnl mpn/asm-defs.m4), so use `;' which should be harmless.
changecom(;)
dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
dnl
dnl Same as the standard PROLOGUE, but align to 2 bytes not 4.
define(`PROLOGUE_cpu',
m4_assert_numargs(1)
` TEXT
ALIGN(2)
GLOBL `$1' GLOBL_ATTR
TYPE(`$1',`function')
`$1'LABEL_SUFFIX')
dnl Usage: d0, etc
dnl
dnl Expand to d0 or %d0 according to the assembler's requirements.
dnl
dnl Actually d0 expands to `d0' or %`d0', the quotes protecting against
dnl further expansion. Definitions are made even if d0 is to be just `d0',
dnl so that any m4 quoting problems will show up everywhere, not just on a
dnl %d0 system.
dnl
dnl Care must be taken with quoting when using these in a definition. For
dnl instance the quotes in the following are essential or two %'s will be
dnl produced when `counter' is used.
dnl
dnl define(counter, `d7')
dnl
dnl Called: m68k_reg(r)
define(m68k_reg,
m4_assert_numargs(1)
m4_assert_defined(`WANT_REGISTER_PERCENT')
`ifelse(WANT_REGISTER_PERCENT,yes,%)`$1'')
dnl Usage: m68k_defreg(r)
define(m68k_defreg,
m4_assert_numargs(1)
`deflit($1,`m68k_reg(`$1')')')
m68k_defreg(d0)
m68k_defreg(d1)
m68k_defreg(d2)
m68k_defreg(d3)
m68k_defreg(d4)
m68k_defreg(d5)
m68k_defreg(d6)
m68k_defreg(d7)
m68k_defreg(a0)
m68k_defreg(a1)
m68k_defreg(a2)
m68k_defreg(a3)
m68k_defreg(a4)
m68k_defreg(a5)
m68k_defreg(a6)
m68k_defreg(a7)
m68k_defreg(sp)
m68k_defreg(pc)
dnl Usage: M(base)
dnl M(base,displacement)
dnl M(base,index,size)
dnl M(base,index,size,scale)
dnl M(base,+)
dnl M(-,base)
dnl
dnl `base' is an address register, `index' is a data register, `size' is w
dnl or l, and scale is 1, 2, 4 or 8.
dnl
dnl M(-,base) has it's arguments that way around to emphasise it's a
dnl pre-decrement, as opposed to M(base,+) a post-increment.
dnl
dnl Enhancement: Add the memory indirect modes, if/when they're needed.
define(M,
m4_assert_numargs_range(1,4)
m4_assert_defined(`WANT_ADDRESSING')
`ifelse(WANT_ADDRESSING,mit,
`ifelse($#,1, ``$1'@')dnl
ifelse($#,2,
`ifelse($2,+, ``$1'@+',
`ifelse($1,-, ``$2'@-',
``$1'@($2)')')')dnl
ifelse($#,3, ``$1'@(`$2':`$3')')dnl
ifelse($#,4, ``$1'@(`$2':`$3':$4)')',
dnl WANT_ADDRESSING `motorola'
`ifelse($#,1, `(`$1')')dnl
ifelse($#,2,
`ifelse($2,+, `(`$1')+',
`ifelse($1,-, `-(`$2')',
`$2(`$1')')')')dnl
ifelse($#,3, `(`$1',`$2'.$3)')dnl
ifelse($#,4, `(`$1',`$2'.$3*$4)')')')
dnl Usage: addl etc
dnl
dnl m68k instructions with special handling for the suffix, with for
dnl instance addl expanding to addl or add.l as necessary.
dnl
dnl See also t-m68k-defs.pl which verifies all mnemonics used in the asm
dnl files have entries here.
dnl Called: m68k_insn(mnemonic,suffix)
define(m68k_insn,
m4_assert_numargs(2)
m4_assert_defined(`WANT_DOT_SIZE')
`ifelse(WANT_DOT_SIZE,yes, ``$1'.``$2''',
``$1$2'')')
dnl Usage: m68k_definsn(mnemonic,suffix)
define(m68k_definsn,
m4_assert_numargs(2)
`deflit($1`'$2,`m68k_insn(`$1',`$2')')')
m68k_definsn(add, l)
m68k_definsn(addx, l)
m68k_definsn(addq, l)
m68k_definsn(asl, l)
m68k_definsn(cmp, l)
m68k_definsn(cmp, w)
m68k_definsn(clr, l)
m68k_definsn(divu, l)
m68k_definsn(eor, w)
m68k_definsn(lsl, l)
m68k_definsn(lsr, l)
m68k_definsn(move, l)
m68k_definsn(move, w)
m68k_definsn(movem,l)
m68k_definsn(moveq,l)
m68k_definsn(mulu, l)
m68k_definsn(neg, l)
m68k_definsn(or, l)
m68k_definsn(roxl, l)
m68k_definsn(roxr, l)
m68k_definsn(sub, l)
m68k_definsn(subx, l)
m68k_definsn(subq, l)
dnl Usage: bra etc
dnl
dnl Expand to `bra', `jra' or `jbra' according to what the assembler will
dnl accept. The latter two give variable-sized branches in gas.
dnl
dnl See also t-m68k-defs.pl which verifies all the bXX branches used in the
dnl asm files have entries here.
dnl Called: m68k_branch(cond)
define(m68k_branch,
m4_assert_numargs(1)
m4_assert_defined(`WANT_BRANCHES')
`ifelse(WANT_BRANCHES,jra, `j$1',
`ifelse(WANT_BRANCHES,jbra,`jb$1',
``b$1'')')')
dnl Called: m68k_defbranch(cond)
define(m68k_defbranch,
m4_assert_numargs(1)
`deflit(b$1,`m68k_branch(`$1')')')
m68k_defbranch(ra)
m68k_defbranch(cc)
m68k_defbranch(cs)
m68k_defbranch(ls)
m68k_defbranch(eq)
m68k_defbranch(ne)
dnl Usage: scale_available_p
dnl
dnl Expand to 1 if a scale factor can be used in addressing modes, or 0 if
dnl not. M(a0,d0,l,4), meaning a0+d0*4, is not available in 68000 or
dnl 68010, but is in CPU32 and in 68020 and up.
define(scale_available_p,
`m4_ifdef_anyof_p(
`HAVE_HOST_CPU_m68360'
`HAVE_HOST_CPU_m68020'
`HAVE_HOST_CPU_m68030'
`HAVE_HOST_CPU_m68040'
`HAVE_HOST_CPU_m68060')')
divert
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