/* $OpenBSD: asm.h,v 1.19 2023/02/03 06:13:08 miod Exp $ */ /* $NetBSD: asm.h,v 1.1 1996/09/30 16:34:20 ws Exp $ */ /* * Copyright (C) 1995, 1996 Wolfgang Solfrank. * Copyright (C) 1995, 1996 TooLs GmbH. * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by TooLs GmbH. * 4. The name of TooLs GmbH may not be used to endorse or promote products * derived from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ #ifndef _POWERPC_ASM_H_ #define _POWERPC_ASM_H_ #define _C_LABEL(x) x #define _ASM_LABEL(x) x #ifdef __STDC__ # define _TMP_LABEL(x) .L_ ## x #else # define _TMP_LABEL(x) .L_/**/x #endif #define _ENTRY_NB(x) \ .text; .align 2; .type x,@function; x: #define _ENTRY(x) .globl x; _ENTRY_NB(x) #if defined(PROF) || defined(GPROF) # define _PROF_PROLOGUE(y) \ .section ".data"; \ .align 2; \ _TMP_LABEL(y):; \ .long 0; \ .section ".text"; \ mflr 0; \ addis 11, 11, _TMP_LABEL(y)@ha; \ stw 0, 4(1); \ addi 0, 11,_TMP_LABEL(y)@l; \ bl _mcount; #else # define _PROF_PROLOGUE(y) #endif #define ENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y) #define ENTRY_NB(y) _ENTRY_NB(y); _PROF_PROLOGUE(y) #define ASENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y) #define END(y) .size y, . - y #define STRONG_ALIAS(alias,sym) \ .global alias; .set alias,sym #define WEAK_ALIAS(alias,sym) \ .weak alias; .set alias,sym #if defined(_RET_PROTECTOR) # if defined(__PIC__) # define RETGUARD_LOAD_RANDOM(x, reg) \ bcl 20, 31, 66f; \ 66: mflr reg; \ addis reg, reg, (__retguard_ ## x - 66b)@ha; \ lwz reg, ((__retguard_ ## x - 66b)@l)(reg) # else # define RETGUARD_LOAD_RANDOM(x, reg) \ lis reg, (__retguard_ ## x)@ha; \ lwz reg, ((__retguard_ ## x)@l)(reg) # endif # define RETGUARD_SETUP(x, reg, retreg) \ mflr retreg; \ RETGUARD_SETUP_LATE(x, reg, retreg) # define RETGUARD_SETUP_LATE(x, reg, retreg) \ RETGUARD_SYMBOL(x); \ RETGUARD_LOAD_RANDOM(x, reg); \ xor reg, reg, retreg # define RETGUARD_CHECK(x, reg, retreg) \ xor reg, reg, retreg; \ RETGUARD_LOAD_RANDOM(x, %r10); \ mtlr retreg; \ twne reg, %r10 # define RETGUARD_SAVE(reg, loc) \ stw reg, loc # define RETGUARD_LOAD(reg, loc) \ lwz reg, loc # define RETGUARD_SYMBOL(x) \ .ifndef __retguard_ ## x; \ .hidden __retguard_ ## x; \ .type __retguard_ ## x,@object; \ .pushsection .openbsd.randomdata.retguard,"aw",@progbits; \ .weak __retguard_ ## x; \ .p2align 2; \ __retguard_ ## x: ; \ .long 0; \ .size __retguard_ ## x, 4; \ .popsection; \ .endif #else # define RETGUARD_LOAD_RANDOM(x, reg) # define RETGUARD_SETUP(x, reg, retreg) # define RETGUARD_SETUP_LATE(x, reg, retreg) # define RETGUARD_CHECK(x, reg, retreg) # define RETGUARD_SAVE(reg, loc) # define RETGUARD_LOAD(reg, loc) # define RETGUARD_SYMBOL(x) #endif #endif /* !_POWERPC_ASM_H_ */