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divert(-1)
dnl m4 macros for amd64 assembler.
dnl Copyright 1999, 2000, 2001, 2002, 2003, 2004, 2005 Free Software
dnl 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 3 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 License
dnl along with the GNU MP Library. If not, see http://www.gnu.org/licenses/.
dnl Notes:
dnl
dnl The 32-bit mode x86/x86-defs.m4 has various 32bit-isms, like the
dnl profiling calls, so it seems cleanest to start a fresh set of defines
dnl for 64-bit mode.
dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
dnl
dnl In the amd64 code we use explicit TEXT and ALIGN() calls in the code,
dnl since different alignments are wanted in various circumstances. So for
dnl instance,
dnl
dnl TEXT
dnl ALIGN(16)
dnl PROLOGUE(mpn_add_n)
dnl ...
dnl EPILOGUE()
define(`PROLOGUE_cpu',
m4_assert_numargs(1)
` GLOBL $1
TYPE($1,`function')
$1:
')
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(ne, `cmpq %rax, %rbx')
dnl
dnl The instructions can be omitted to just assert a flags condition with
dnl no extra calculation. For example,
dnl
dnl ASSERT(nc)
dnl
dnl When `instructions' is not empty, a pushfq/popfq is added for
dnl convenience to preserve the flags, but the instructions themselves must
dnl preserve any registers that matter.
dnl
dnl The condition can be omitted to just output the given instructions when
dnl assertion checking is wanted. In this case the pushf/popf is omitted.
dnl For example,
dnl
dnl ASSERT(, `movq %rax, VAR_KEEPVAL')
define(ASSERT,
m4_assert_numargs_range(1,2)
m4_assert_defined(`WANT_ASSERT')
`ifelse(WANT_ASSERT,1,
`ifelse(`$1',,
` $2',
`ifelse(`$2',,,
` pushfq')
$2
j`$1' L(ASSERT_ok`'ASSERT_counter)
ud2 C assertion failed
L(ASSERT_ok`'ASSERT_counter):
ifelse(`$2',,,` popfq')
define(`ASSERT_counter',incr(ASSERT_counter))')')')
define(ASSERT_counter,1)
define(`LEA',`
mov $1@GOTPCREL(%rip), $2
')
define(`DEF_OBJECT',
m4_assert_numargs_range(1,2)
` RODATA
ALIGN(ifelse($#,1,2,$2))
$1:
')
define(`END_OBJECT',
m4_assert_numargs(1)
` SIZE(`$1',.-`$1')')
define(`R32',
`ifelse($1,`%rax',`%eax',
$1,`%rbx',`%ebx',
$1,`%rcx',`%ecx',
$1,`%rdx',`%edx',
$1,`%rsi',`%esi',
$1,`%rdi',`%edi',
$1,`%rbp',`%ebp',
$1,`%r8',`%r8d',
$1,`%r9',`%r9d',
$1,`%r10',`%r10d',
$1,`%r11',`%r11d',
$1,`%r12',`%r12d',
$1,`%r13',`%r13d',
$1,`%r14',`%r14d',
$1,`%r15',`%r15d')')
define(`R8',
`ifelse($1,`%rax',`%al',
$1,`%rbx',`%bl',
$1,`%rcx',`%cl',
$1,`%rdx',`%dl',
$1,`%rsi',`%sil',
$1,`%rdi',`%dil',
$1,`%rbp',`%bpl',
$1,`%r8',`%r8b',
$1,`%r9',`%r9b',
$1,`%r10',`%r10b',
$1,`%r11',`%r11b',
$1,`%r12',`%r12b',
$1,`%r13',`%r13b',
$1,`%r14',`%r14b',
$1,`%r15',`%r15b')')
dnl Usage: CALL(funcname)
dnl
ifdef(`PIC',
`define(`CALL',`call GSYM_PREFIX`'$1@PLT')',
`define(`CALL',`call GSYM_PREFIX`'$1')')
define(`JUMPTABSECT', `.section .data.rel.ro.local,"aw",@progbits')
divert`'dnl
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