| 1 | /* $Id: zero-alt.S 106061 2024-09-16 14:03:52Z vboxsync $ */
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| 2 | /** @file
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| 3 | * IPRT - Zero Memory, mach-o version (for arm/sparc).
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| 4 | */
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| 5 |
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| 6 | /*
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| 7 | * Copyright (C) 2013-2024 Oracle and/or its affiliates.
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| 8 | *
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| 9 | * This file is part of VirtualBox base platform packages, as
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| 10 | * available from https://www.virtualbox.org.
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| 11 | *
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| 12 | * This program is free software; you can redistribute it and/or
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| 13 | * modify it under the terms of the GNU General Public License
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| 14 | * as published by the Free Software Foundation, in version 3 of the
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| 15 | * License.
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| 16 | *
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| 17 | * This program is distributed in the hope that it will be useful, but
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| 18 | * WITHOUT ANY WARRANTY; without even the implied warranty of
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| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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| 20 | * General Public License for more details.
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| 21 | *
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| 22 | * You should have received a copy of the GNU General Public License
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| 23 | * along with this program; if not, see <https://www.gnu.org/licenses>.
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| 24 | *
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| 25 | * The contents of this file may alternatively be used under the terms
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| 26 | * of the Common Development and Distribution License Version 1.0
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| 27 | * (CDDL), a copy of it is provided in the "COPYING.CDDL" file included
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| 28 | * in the VirtualBox distribution, in which case the provisions of the
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| 29 | * CDDL are applicable instead of those of the GPL.
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| 30 | *
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| 31 | * You may elect to license modified versions of this file under the
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| 32 | * terms and conditions of either the GPL or the CDDL or both.
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| 33 | *
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| 34 | * SPDX-License-Identifier: GPL-3.0-only OR CDDL-1.0
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| 35 | */
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| 36 |
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| 37 |
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| 38 | #ifdef ASM_FORMAT_MACHO
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| 39 | ; Putting it in the code segment/section for now.
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| 40 | .section __TEXT,__text,regular,pure_instructions
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| 41 | .section __TEXT,__const
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| 42 | # define NAME(a) _##a
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| 43 | #elif defined(ASM_FORMAT_ELF) && (defined(RT_ARCH_ARM64) || defined(RT_ARCH_SPARC) || defined(RT_ARCH_SPARC64))
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| 44 | /* Putting it in the rodata segment/section for now. */
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| 45 | .file "zero-alt.S"
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| 46 | .section ".rodata"
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| 47 | # define NAME(a) a
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| 48 | # ifndef RT_ARCH_ARM64 /* RTSignTool references g_abRTZero4K from VBoxRT.so */
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| 49 | # define NEED_HIDDEN
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| 50 | # endif
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| 51 | #else
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| 52 | # error "PORT ME!"
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| 53 | #endif
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| 54 |
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| 55 | /* 64KB of zero memory with various sized labels. */
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| 56 | .globl NAME(g_abRTZeroPage)
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| 57 | #ifdef ASM_FORMAT_ELF
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| 58 | # ifdef NEED_HIDDEN
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| 59 | .hidden NAME(g_abRTZeroPage)
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| 60 | # endif
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| 61 | .type NAME(g_abRTZeroPage),#object
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| 62 | # if defined(RT_ARCH_SPARC) || defined(RT_ARCH_SPARC64)
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| 63 | .size NAME(g_abRTZeroPage),8192
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| 64 | # else
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| 65 | .size NAME(g_abRTZeroPage),4096
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| 66 | # endif
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| 67 | #endif
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| 68 | NAME(g_abRTZeroPage):
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| 69 | .globl NAME(g_abRTZero4K)
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| 70 | #ifdef ASM_FORMAT_ELF
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| 71 | # ifdef NEED_HIDDEN
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| 72 | .hidden NAME(g_abRTZero4K)
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| 73 | # endif
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| 74 | .type NAME(g_abRTZero4K),#object
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| 75 | .size NAME(g_abRTZero4K),4096
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| 76 | #endif
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| 77 | NAME(g_abRTZero4K):
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| 78 | .globl NAME(g_abRTZero8K)
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| 79 | #ifdef ASM_FORMAT_ELF
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| 80 | # ifdef NEED_HIDDEN
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| 81 | .hidden NAME(g_abRTZero8K)
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| 82 | # endif
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| 83 | .type NAME(g_abRTZero8K),#object
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| 84 | .size NAME(g_abRTZero8K),8192
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| 85 | #endif
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| 86 | NAME(g_abRTZero8K):
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| 87 | .globl NAME(g_abRTZero16K)
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| 88 | #ifdef ASM_FORMAT_ELF
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| 89 | # ifdef NEED_HIDDEN
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| 90 | .hidden NAME(g_abRTZero16K)
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| 91 | # endif
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| 92 | .type NAME(g_abRTZero16K),#object
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| 93 | .size NAME(g_abRTZero16K),16384
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| 94 | #endif
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| 95 | NAME(g_abRTZero16K):
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| 96 | .globl NAME(g_abRTZero32K)
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| 97 | #ifdef ASM_FORMAT_ELF
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| 98 | # ifdef NEED_HIDDEN
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| 99 | .hidden NAME(g_abRTZero32K)
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| 100 | # endif
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| 101 | .type NAME(g_abRTZero32K),#object
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| 102 | .size NAME(g_abRTZero32K),32768
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| 103 | #endif
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| 104 | NAME(g_abRTZero32K):
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| 105 | .globl NAME(g_abRTZero64K)
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| 106 | #ifdef ASM_FORMAT_ELF
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| 107 | # ifdef NEED_HIDDEN
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| 108 | .hidden NAME(g_abRTZero64K)
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| 109 | # endif
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| 110 | .type NAME(g_abRTZero64K),#object
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| 111 | .size NAME(g_abRTZero64K),65536
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| 112 | #endif
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| 113 | NAME(g_abRTZero64K):
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| 114 |
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| 115 | #ifdef ASM_FORMAT_MACHO
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| 116 | .space 65536
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| 117 | #elif defined(ASM_FORMAT_ELF)
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| 118 | .skip 65536
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| 119 | #endif
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| 120 |
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