127 lines
3.5 KiB
Plaintext
127 lines
3.5 KiB
Plaintext
divert(-1)
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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 ia64 assembler comments are C++ style "//" to the end of line. gas
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dnl also accepts "#" as a comment, if it's the first non-blank on a line.
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dnl
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dnl BSD m4 can't handle a multi-character comment like "//" (see notes in
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dnl mpn/asm-defs.m4). For now the default "#" is left, but with care taken
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dnl not to put any macros after "foo#" (since of course they won't expand).
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define(`ASM_START',
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m4_assert_numargs(0)
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`')
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dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
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dnl EPILOGUE_cpu(GSYM_PREFIX`'foo)
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dnl
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dnl 32-byte alignment is used for the benefit of itanium-2, where the code
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dnl fetcher will only take 2 bundles from a 32-byte aligned target. At
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dnl 16mod32 it only reads 1 in the first cycle. This might not make any
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dnl difference if the rotate buffers are full or there's other work holding
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dnl up execution, but we use 32-bytes to give the best chance of peak
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dnl throughput.
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dnl
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dnl We can use .align here despite the gas bug noted in mpn/ia64/README,
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dnl since we're not expecting to execute across a PROLOGUE(), at least not
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dnl currently.
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define(`PROLOGUE_cpu',
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m4_assert_numargs(1)
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`
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.text
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.align 32
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.global $1#
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.proc $1#
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$1:')
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define(`EPILOGUE_cpu',
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m4_assert_numargs(1)
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`
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.endp $1#
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')
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define(`DATASTART',
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`dnl
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DATA
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$1:')
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define(`DATAEND',`dnl')
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define(`ASM_END',`dnl')
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dnl Usage: ALIGN(bytes)
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dnl
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dnl Emit a ".align" directive. "bytes" is eval()ed, so can be an
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dnl expression.
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dnl
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dnl This version overrides the definition in mpn/asm-defs.m4. We supress
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dnl any .align if the gas byte-swapped-nops bug was detected by configure
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dnl GMP_ASM_IA64_ALIGN_OK.
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define(`ALIGN',
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m4_assert_numargs(1)
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m4_assert_defined(`IA64_ALIGN_OK')
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`ifelse(IA64_ALIGN_OK,no,,
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`.align eval($1)')')
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dnl Usage: ASSERT([pr] [,code])
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dnl
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dnl Require that the given predictate register is true after executing the
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dnl test code. For example,
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dnl
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dnl ASSERT(p6,
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dnl ` cmp.eq p6,p0 = r3, r4')
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dnl
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dnl If the predicate register argument is empty then nothing is tested, the
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dnl code is just executed. This can be used for setups required by later
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dnl ASSERTs. The code argument can be omitted to just test a predicate
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dnl with no special setup code.
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dnl
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dnl For convenience, stops are inserted before and after the code emitted.
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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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` ;;
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ifelse(`$2',,,
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`$2
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;;
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')
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ifelse(`$1',,,
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`($1) br .LASSERTok`'ASSERT_label_counter ;;
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cmp.ne p6,p6 = r0, r0 C illegal instruction
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;;
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.LASSERTok`'ASSERT_label_counter:
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define(`ASSERT_label_counter',eval(ASSERT_label_counter+1))
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')
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')')
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define(`ASSERT_label_counter',1)
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divert
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