3 dnl m4 macros for PowerPC assembler (32 and 64 bit).
5 dnl Copyright 2000, 2002, 2003 Free Software Foundation, Inc.
7 dnl This file is part of the GNU MP Library.
9 dnl The GNU MP Library is free software; you can redistribute it and/or modify
10 dnl it under the terms of either:
12 dnl * the GNU Lesser General Public License as published by the Free
13 dnl Software Foundation; either version 3 of the License, or (at your
14 dnl option) any later version.
18 dnl * the GNU General Public License as published by the Free Software
19 dnl Foundation; either version 2 of the License, or (at your option) any
22 dnl or both in parallel, as here.
24 dnl The GNU MP Library is distributed in the hope that it will be useful, but
25 dnl WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
26 dnl or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
29 dnl You should have received copies of the GNU General Public License and the
30 dnl GNU Lesser General Public License along with the GNU MP Library. If not,
31 dnl see https://www.gnu.org/licenses/.
34 dnl Called: PROLOGUE_cpu(GSYM_PREFIX`'foo)
36 dnl This is the same as the default in mpn/asm-defs.m4, but with ALIGN(4)
39 dnl 4-byte alignment is normally enough, certainly it's what gcc gives. We
40 dnl don't want bigger alignment within PROLOGUE since it can introduce
41 dnl padding into multiple-entrypoint routines, and with gas such padding is
42 dnl zero words, which are not valid instructions.
44 define(`PROLOGUE_cpu',
53 dnl Usage: r0 ... r31, cr0 ... cr7
55 dnl Registers names, either left as "r0" etc or mapped to plain 0 etc,
56 dnl according to the result of the GMP_ASM_POWERPC_REGISTERS configure
59 ifelse(WANT_R_REGISTERS,no,`
60 forloop(i,0,31,`deflit(`r'i,i)')
61 forloop(i,0,31,`deflit(`v'i,i)')
62 forloop(i,0,31,`deflit(`f'i,i)')
63 forloop(i,0,7, `deflit(`cr'i,i)')
67 dnl Usage: ASSERT(cond,instructions)
69 dnl If WANT_ASSERT is 1, output the given instructions and expect the given
70 dnl flags condition to then be satisfied. For example,
72 dnl ASSERT(eq, `cmpwi r6, 123')
74 dnl The instructions can be omitted to just assert a flags condition with
75 dnl no extra calculation. For example,
79 dnl The condition can be omitted to just output the given instructions when
80 dnl assertion checking is wanted. For example,
82 dnl ASSERT(, `mr r11, r0')
84 dnl Using a zero word for an illegal instruction is probably not ideal,
85 dnl since it marks the beginning of a traceback table in the 64-bit ABI.
86 dnl But assertions are only for development, so it doesn't matter too much.
89 m4_assert_numargs_range(1,2)
90 m4_assert_defined(`WANT_ASSERT')
91 `ifelse(WANT_ASSERT,1,
95 ` b$1 L(ASSERT_ok`'ASSERT_counter)
96 W32 0 C assertion failed
97 L(ASSERT_ok`'ASSERT_counter):
98 define(`ASSERT_counter',incr(ASSERT_counter))
101 define(ASSERT_counter,1)