mirror of
https://codeberg.org/ziglang/zig.git
synced 2026-04-28 19:47:08 +03:00
Alex Rønne Petersen
66d97267c7
This excludes all headers in /usr/include/dev because that directory is bonkers huge (18M). We can add these on an as-needed basis.
127 lines
4.2 KiB
C
Vendored
127 lines
4.2 KiB
C
Vendored
/* $OpenBSD: asm.h,v 1.19 2023/02/03 06:13:08 miod Exp $ */
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/* $NetBSD: asm.h,v 1.1 1996/09/30 16:34:20 ws Exp $ */
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/*
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* Copyright (C) 1995, 1996 Wolfgang Solfrank.
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* Copyright (C) 1995, 1996 TooLs GmbH.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by TooLs GmbH.
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* 4. The name of TooLs GmbH may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
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* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef _POWERPC_ASM_H_
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#define _POWERPC_ASM_H_
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#define _C_LABEL(x) x
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#define _ASM_LABEL(x) x
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#ifdef __STDC__
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# define _TMP_LABEL(x) .L_ ## x
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#else
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# define _TMP_LABEL(x) .L_/**/x
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#endif
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#define _ENTRY_NB(x) \
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.text; .align 2; .type x,@function; x:
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#define _ENTRY(x) .globl x; _ENTRY_NB(x)
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#if defined(PROF) || defined(GPROF)
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# define _PROF_PROLOGUE(y) \
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.section ".data"; \
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.align 2; \
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_TMP_LABEL(y):; \
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.long 0; \
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.section ".text"; \
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mflr 0; \
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addis 11, 11, _TMP_LABEL(y)@ha; \
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stw 0, 4(1); \
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addi 0, 11,_TMP_LABEL(y)@l; \
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bl _mcount;
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#else
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# define _PROF_PROLOGUE(y)
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#endif
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#define ENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y)
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#define ENTRY_NB(y) _ENTRY_NB(y); _PROF_PROLOGUE(y)
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#define ASENTRY(y) _ENTRY(y); _PROF_PROLOGUE(y)
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#define END(y) .size y, . - y
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#define STRONG_ALIAS(alias,sym) \
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.global alias; .set alias,sym
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#define WEAK_ALIAS(alias,sym) \
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.weak alias; .set alias,sym
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#if defined(_RET_PROTECTOR)
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# if defined(__PIC__)
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# define RETGUARD_LOAD_RANDOM(x, reg) \
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bcl 20, 31, 66f; \
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66: mflr reg; \
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addis reg, reg, (__retguard_ ## x - 66b)@ha; \
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lwz reg, ((__retguard_ ## x - 66b)@l)(reg)
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# else
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# define RETGUARD_LOAD_RANDOM(x, reg) \
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lis reg, (__retguard_ ## x)@ha; \
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lwz reg, ((__retguard_ ## x)@l)(reg)
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# endif
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# define RETGUARD_SETUP(x, reg, retreg) \
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mflr retreg; \
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RETGUARD_SETUP_LATE(x, reg, retreg)
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# define RETGUARD_SETUP_LATE(x, reg, retreg) \
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RETGUARD_SYMBOL(x); \
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RETGUARD_LOAD_RANDOM(x, reg); \
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xor reg, reg, retreg
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# define RETGUARD_CHECK(x, reg, retreg) \
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xor reg, reg, retreg; \
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RETGUARD_LOAD_RANDOM(x, %r10); \
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mtlr retreg; \
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twne reg, %r10
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# define RETGUARD_SAVE(reg, loc) \
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stw reg, loc
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# define RETGUARD_LOAD(reg, loc) \
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lwz reg, loc
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# define RETGUARD_SYMBOL(x) \
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.ifndef __retguard_ ## x; \
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.hidden __retguard_ ## x; \
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.type __retguard_ ## x,@object; \
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.pushsection .openbsd.randomdata.retguard,"aw",@progbits; \
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.weak __retguard_ ## x; \
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.p2align 2; \
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__retguard_ ## x: ; \
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.long 0; \
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.size __retguard_ ## x, 4; \
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.popsection; \
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.endif
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#else
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# define RETGUARD_LOAD_RANDOM(x, reg)
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# define RETGUARD_SETUP(x, reg, retreg)
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# define RETGUARD_SETUP_LATE(x, reg, retreg)
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# define RETGUARD_CHECK(x, reg, retreg)
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# define RETGUARD_SAVE(reg, loc)
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# define RETGUARD_LOAD(reg, loc)
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# define RETGUARD_SYMBOL(x)
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#endif
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#endif /* !_POWERPC_ASM_H_ */ |