1divert(-1) 2 3dnl m4 macros for PowerPC assembler (32 and 64 bit). 4 5dnl Copyright 2000, 2002, 2003, 2017, 2018 Free Software Foundation, Inc. 6 7dnl This file is part of the GNU MP Library. 8dnl 9dnl The GNU MP Library is free software; you can redistribute it and/or modify 10dnl it under the terms of either: 11dnl 12dnl * the GNU Lesser General Public License as published by the Free 13dnl Software Foundation; either version 3 of the License, or (at your 14dnl option) any later version. 15dnl 16dnl or 17dnl 18dnl * the GNU General Public License as published by the Free Software 19dnl Foundation; either version 2 of the License, or (at your option) any 20dnl later version. 21dnl 22dnl or both in parallel, as here. 23dnl 24dnl The GNU MP Library is distributed in the hope that it will be useful, but 25dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY 26dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 27dnl for more details. 28dnl 29dnl You should have received copies of the GNU General Public License and the 30dnl GNU Lesser General Public License along with the GNU MP Library. If not, 31dnl see https://www.gnu.org/licenses/. 32 33 34dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo) 35dnl 36dnl This is the same as the default in mpn/asm-defs.m4, but with ALIGN(4) 37dnl not 8. 38dnl 39dnl 4-byte alignment is normally enough, certainly it's what gcc gives. We 40dnl don't want bigger alignment within PROLOGUE since it can introduce 41dnl padding into multiple-entrypoint routines, and with gas such padding is 42dnl zero words, which are not valid instructions. 43 44define(`PROLOGUE_cpu', 45m4_assert_numargs(1) 46` TEXT 47 ALIGN(4) 48 GLOBL `$1' GLOBL_ATTR 49 TYPE(`$1',`function') 50`$1'LABEL_SUFFIX') 51 52 53dnl Usage: r0 ... r31, cr0 ... cr7 54dnl 55dnl Registers names, either left as "r0" etc or mapped to plain 0 etc, 56dnl according to the result of the GMP_ASM_POWERPC_REGISTERS configure 57dnl test. 58 59ifelse(WANT_R_REGISTERS,no,` 60forloop(i,0,31,`deflit(`r'i,i)') 61forloop(i,0,31,`deflit(`v'i,i)') 62forloop(i,0,31,`deflit(`f'i,i)') 63forloop(i,0,7, `deflit(`cr'i,i)') 64') 65 66 67dnl Usage: ASSERT(cond,instructions) 68dnl 69dnl If WANT_ASSERT is 1, output the given instructions and expect the given 70dnl flags condition to then be satisfied. For example, 71dnl 72dnl ASSERT(eq, `cmpwi r6, 123') 73dnl 74dnl The instructions can be omitted to just assert a flags condition with 75dnl no extra calculation. For example, 76dnl 77dnl ASSERT(ne) 78dnl 79dnl The condition can be omitted to just output the given instructions when 80dnl assertion checking is wanted. For example, 81dnl 82dnl ASSERT(, `mr r11, r0') 83dnl 84dnl Using a zero word for an illegal instruction is probably not ideal, 85dnl since it marks the beginning of a traceback table in the 64-bit ABI. 86dnl But assertions are only for development, so it doesn't matter too much. 87 88define(ASSERT, 89m4_assert_numargs_range(1,2) 90m4_assert_defined(`WANT_ASSERT') 91`ifelse(WANT_ASSERT,1, 92 `C ASSERT 93 $2 94ifelse(`$1',,, 95` b$1 L(ASSERT_ok`'ASSERT_counter) 96 W32 0 C assertion failed 97L(ASSERT_ok`'ASSERT_counter): 98define(`ASSERT_counter',incr(ASSERT_counter)) 99')')') 100 101define(ASSERT_counter,1) 102 103dnl Manually assemble some new instructions 104dnl 105 106define(`maddld',m4_assert_numargs(4)`dnl 107.long eval(0x10000033+m4_lshift($1,21)+m4_lshift($2,16)+m4_lshift($3,11)+m4_lshift($4,6))') 108 109define(`maddhdu',m4_assert_numargs(4)`dnl 110.long eval(0x10000031+m4_lshift($1,21)+m4_lshift($2,16)+m4_lshift($3,11)+m4_lshift($4,6))') 111 112define(`popcntd',m4_assert_numargs(2)`dnl 113.long eval(0x7c0003f4+m4_lshift($2,21)+m4_lshift($1,16))') 114 115define(`divdeu',m4_assert_numargs(3)`dnl 116.long eval(0x7c000312+m4_lshift($1,21)+m4_lshift($2,16)+m4_lshift($3,11))') 117 118define(`addex',m4_assert_numargs(4)`dnl 119.long eval(0x7c000154+m4_lshift($1,21)+m4_lshift($2,16)+m4_lshift($3,11)+m4_lshift($4,9))') 120 121divert 122