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a7c01e7a53
COFF sections are accompanied with an auxiliary symbol which includes a checksum. This checksum used to be filled with just zero but this seems to upset LINK.exe when it is processing a /INCREMENTAL link job. Instead, fill the CheckSum field with the JamCRC of the section contents. This matches MSVC's behavior. This fixes PR19666. N.B. A rather simple implementation of JamCRC is given. It implements a byte-wise calculation using the method given by Sarwate. There are implementations with higher throughput like slice-by-eight and making use of PCLMULQDQ. We can switch to one of those techniques if it turns out to be a significant use of time. llvm-svn: 246590
167 lines
5.7 KiB
ArmAsm
167 lines
5.7 KiB
ArmAsm
// The purpose of this test is to see if the COFF object writer is emitting the
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// proper relocations for multiple pieces of data in a single data fragment.
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// RUN: llvm-mc -filetype=obj -triple i686-pc-win32 %s | llvm-readobj -h -s -sr -sd -t | FileCheck %s
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.def _main;
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.scl 2;
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.type 32;
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.endef
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.text
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.globl _main
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.align 16, 0x90
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_main: # @main
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# BB#0: # %entry
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subl $4, %esp
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movl $L_.str0, (%esp)
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calll _printf
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movl $L_.str1, (%esp)
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calll _puts
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movl $L_.str2, (%esp)
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calll _puts
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xorl %eax, %eax
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addl $4, %esp
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ret
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.data
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L_.str0: # @.str0
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.asciz "Hello "
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L_.str1: # @.str1
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.asciz "World!"
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.align 16 # @.str2
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L_.str2:
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.asciz "I'm The Last Line."
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// CHECK: {
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// CHECK: Machine: IMAGE_FILE_MACHINE_I386 (0x14C)
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// CHECK: SectionCount: 3
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// CHECK: TimeDateStamp: {{[0-9]+}}
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// CHECK: PointerToSymbolTable: 0x{{[0-9A-F]+}}
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// CHECK: SymbolCount: 9
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// CHECK: OptionalHeaderSize: 0
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// CHECK: Characteristics [ (0x0)
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// CHECK: ]
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// CHECK: }
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// CHECK: Sections [
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// CHECK: Section {
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// CHECK: Number: 1
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// CHECK: Name: .text
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// CHECK: VirtualSize: 0
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// CHECK: VirtualAddress: 0
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// CHECK: RawDataSize: {{[0-9]+}}
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// CHECK: PointerToRawData: 0x{{[0-9A-F]+}}
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// CHECK: PointerToRelocations: 0x{{[0-9A-F]+}}
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// CHECK: PointerToLineNumbers: 0x0
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// CHECK: RelocationCount: 6
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// CHECK: LineNumberCount: 0
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// CHECK: Characteristics [ (0x60500020)
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// CHECK: IMAGE_SCN_ALIGN_16BYTES
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// CHECK: IMAGE_SCN_CNT_CODE
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// CHECK: IMAGE_SCN_MEM_EXECUTE
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// CHECK: IMAGE_SCN_MEM_READ
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// CHECK: ]
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// CHECK: Relocations [
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// CHECK: 0x6 IMAGE_REL_I386_DIR32 .data
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// CHECK: 0xB IMAGE_REL_I386_REL32 _printf
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// CHECK: 0x12 IMAGE_REL_I386_DIR32 .data
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// CHECK: 0x17 IMAGE_REL_I386_REL32 _puts
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// CHECK: 0x1E IMAGE_REL_I386_DIR32 .data
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// CHECK: 0x23 IMAGE_REL_I386_REL32 _puts
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// CHECK: ]
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// CHECK: SectionData (
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// CHECK: 0000: 83EC04C7 04240000 0000E800 000000C7 |.....$..........|
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// CHECK: 0010: 04240700 0000E800 000000C7 04241000 |.$...........$..|
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// CHECK: 0020: 0000E800 00000031 C083C404 C3 |.......1.....|
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// CHECK: )
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// CHECK: }
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// CHECK: Section {
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// CHECK: Number: 2
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// CHECK: Name: .data
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// CHECK: VirtualSize: 0
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// CHECK: VirtualAddress: 0
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// CHECK: RawDataSize: {{[0-9]+}}
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// CHECK: PointerToRawData: 0x{{[0-9A-F]+}}
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// CHECK: PointerToRelocations: 0x0
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// CHECK: PointerToLineNumbers: 0x0
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// CHECK: RelocationCount: 0
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// CHECK: LineNumberCount: 0
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// CHECK: Characteristics [ (0xC0500040)
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// CHECK: IMAGE_SCN_ALIGN_16BYTES
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// CHECK: IMAGE_SCN_CNT_INITIALIZED_DATA
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// CHECK: IMAGE_SCN_MEM_READ
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// CHECK: IMAGE_SCN_MEM_WRITE
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// CHECK: Relocations [
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// CHECK: ]
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// CHECK: SectionData (
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// CHECK: 0000: 48656C6C 6F200057 6F726C64 21000000 |Hello .World!...|
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// CHECK: 0010: 49276D20 54686520 4C617374 204C696E |I'm The Last Lin|
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// CHECK: 0020: 652E00 |e..|
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// CHECK: )
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// CHECK: }
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// CHECK: ]
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// CHECK: Symbols [
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// CHECK: Symbol {
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// CHECK: Name: .text
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// CHECK: Value: 0
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// CHECK: Section: .text
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// CHECK: BaseType: Null
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// CHECK: ComplexType: Null
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// CHECK: StorageClass: Static
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// CHECK: AuxSymbolCount: 1
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// CHECK: AuxSectionDef {
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// CHECK: Length: 45
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// CHECK: RelocationCount: 6
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// CHECK: LineNumberCount: 0
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// CHECK: Checksum: 0xDED1DC2
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// CHECK: Number: 1
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// CHECK: Selection: 0x0
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// CHECK: }
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// CHECK: }
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// CHECK: Symbol {
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// CHECK: Name: .data
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// CHECK: Value: 0
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// CHECK: Section: .data
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// CHECK: BaseType: Null
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// CHECK: ComplexType: Null
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// CHECK: StorageClass: Static
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// CHECK: AuxSymbolCount: 1
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// CHECK: AuxSectionDef {
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// CHECK: Length: 35
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// CHECK: RelocationCount: 0
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// CHECK: LineNumberCount: 0
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// CHECK: Checksum: 0xB0A4C21
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// CHECK: Number: 2
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// CHECK: Selection: 0x0
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// CHECK: }
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// CHECK: }
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// CHECK: Symbol {
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// CHECK: Name: _main
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// CHECK: Value: 0
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// CHECK: Section: .text
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// CHECK: BaseType: Null
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// CHECK: ComplexType: Function
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// CHECK: StorageClass: External
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// CHECK: AuxSymbolCount: 0
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// CHECK: }
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// CHECK: Symbol {
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// CHECK: Name: _printf
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// CHECK: Value: 0
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// CHECK: Section: IMAGE_SYM_UNDEFINED (0)
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// CHECK: BaseType: Null
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// CHECK: ComplexType: Null
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// CHECK: StorageClass: External
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// CHECK: AuxSymbolCount: 0
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// CHECK: }
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// CHECK: Symbol {
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// CHECK: Name: _puts
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// CHECK: Value: 0
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// CHECK: Section: IMAGE_SYM_UNDEFINED (0)
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// CHECK: BaseType: Null
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// CHECK: ComplexType: Null
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// CHECK: StorageClass: External
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// CHECK: AuxSymbolCount: 0
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// CHECK: }
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// CHECK: ]
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