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divert(-1)
dnl m4 macros for PowerPC assembler (32 and 64 bit).
dnl Copyright 2000, 2002, 2003 Free Software Foundation, Inc.
dnl
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
dnl modify it under the terms of the GNU Lesser General Public License as
dnl published by the Free Software Foundation; either version 2.1 of the
dnl License, or (at your option) any later version.
dnl
dnl The GNU MP Library is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
dnl Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with the GNU MP Library; see the file COPYING.LIB. If
dnl not, write to the Free Software Foundation, Inc., 51 Franklin Street,
dnl Fifth Floor, Boston, MA 02110-1301, USA.
dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
dnl
dnl This is the same as the default in mpn/asm-defs.m4, but with ALIGN(4)
dnl not 8.
dnl
dnl 4-byte alignment is normally enough, certainly it's what gcc gives. We
dnl don't want bigger alignment within PROLOGUE since it can introduce
dnl padding into multiple-entrypoint routines, and with gas such padding is
dnl zero words, which are not valid instructions.
define(`PROLOGUE_cpu',
m4_assert_numargs(1)
` TEXT
ALIGN(4)
GLOBL `$1' GLOBL_ATTR
TYPE(`$1',`function')
`$1'LABEL_SUFFIX')
dnl Usage: r0 ... r31, cr0 ... cr7
dnl
dnl Registers names, either left as "r0" etc or mapped to plain 0 etc,
dnl according to the result of the GMP_ASM_POWERPC_REGISTERS configure
dnl test.
ifelse(WANT_R_REGISTERS,no,`
forloop(i,0,31,`deflit(`r'i,i)')
forloop(i,0,31,`deflit(`v'i,i)')
forloop(i,0,31,`deflit(`f'i,i)')
forloop(i,0,7, `deflit(`cr'i,i)')
')
dnl Usage: ASSERT(cond,instructions)
dnl
dnl If WANT_ASSERT is 1, output the given instructions and expect the given
dnl flags condition to then be satisfied. For example,
dnl
dnl ASSERT(eq, `cmpwi r6, 123')
dnl
dnl The instructions can be omitted to just assert a flags condition with
dnl no extra calculation. For example,
dnl
dnl ASSERT(ne)
dnl
dnl The condition can be omitted to just output the given instructions when
dnl assertion checking is wanted. For example,
dnl
dnl ASSERT(, `mr r11, r0')
dnl
dnl Using a zero word for an illegal instruction is probably not ideal,
dnl since it marks the beginning of a traceback table in the 64-bit ABI.
dnl But assertions are only for development, so it doesn't matter too much.
define(ASSERT,
m4_assert_numargs_range(1,2)
m4_assert_defined(`WANT_ASSERT')
`ifelse(WANT_ASSERT,1,
`C ASSERT
$2
ifelse(`$1',,,
` b$1 L(ASSERT_ok`'ASSERT_counter)
W32 0 C assertion failed
L(ASSERT_ok`'ASSERT_counter):
define(`ASSERT_counter',incr(ASSERT_counter))
')')')
define(ASSERT_counter,1)
divert
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