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