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a4d7fb4cc3
Placing a 32-bit pointer directly into a .quad results in either an unsupported relocation error at link time (ARM) or an inability to load the executable (x86). Also, only attempt to read a module's CrashpadInfo if an info address note was found. Change-Id: I053af3d77eed70af66248be88547656d2b29878a Reviewed-on: https://chromium-review.googlesource.com/922397 Reviewed-by: Scott Graham <scottmg@chromium.org> Reviewed-by: Mark Mentovai <mark@chromium.org> Commit-Queue: Joshua Peraza <jperaza@chromium.org>
58 lines
1.9 KiB
ArmAsm
58 lines
1.9 KiB
ArmAsm
// Copyright 2018 The Crashpad Authors. All rights reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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// This note section is used on ELF platforms to give ElfImageReader a method
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// of finding the instance of CrashpadInfo g_crashpad_info without requiring
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// that symbol to be in the dynamic symbol table.
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#include "build/build_config.h"
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#include "util/misc/elf_note_types.h"
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// namespace crashpad {
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// CrashpadInfo g_crashpad_info;
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// } // namespace crashpad
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#define CRASHPAD_INFO_SYMBOL _ZN8crashpad15g_crashpad_infoE
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#define NOTE_ALIGN 4
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// This section must be "a"llocated so that it appears in the final binary at
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// runtime, and "w"ritable so that the relocation to CRASHPAD_INFO_SYMBOL can
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// be performed.
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.section .note.crashpad.info,"aw",%note
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.balign NOTE_ALIGN
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.globl CRASHPAD_NOTE_REFERENCE
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.type CRASHPAD_NOTE_REFERENCE, %object
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CRASHPAD_NOTE_REFERENCE:
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.long name_end - name // namesz
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.long desc_end - desc // descsz
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.long CRASHPAD_ELF_NOTE_TYPE_CRASHPAD_INFO // type
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name:
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.asciz CRASHPAD_ELF_NOTE_NAME
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name_end:
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.balign NOTE_ALIGN
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desc:
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#if defined(ARCH_CPU_64_BITS)
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.quad CRASHPAD_INFO_SYMBOL
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#else
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#if defined(ARCH_CPU_LITTLE_ENDIAN)
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.long CRASHPAD_INFO_SYMBOL
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.long 0
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#else
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.long 0
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.long CRASHPAD_INFO_SYMBOL
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#endif // ARCH_CPU_LITTLE_ENDIAN
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#endif // ARCH_CPU_64_BITS
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desc_end:
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.size CRASHPAD_NOTE_REFERENCE, .-CRASHPAD_NOTE_REFERENCE
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