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b9e92f17ed
This relands D64327 with a more specific workaround for R_386_GOTOFF (gold<2.34 bug https://sourceware.org/bugzilla/show_bug.cgi?id=16794) .debug_info has quite a few .debug_str relocations (R_386_32/R_ARM_ABS32). The original workaround was too general and introduced too many .L symbols used just as relocation targets. From the original review: ... it reduced the size of a big ARM-32 debug image by 33%. It contained ~68M of relocations symbols out of total ~71M symbols (96% of symbols table was generated for relocations with symbol).
137 lines
5.7 KiB
ArmAsm
137 lines
5.7 KiB
ArmAsm
// RUN: llvm-mc -filetype=obj -triple i386-pc-linux-gnu %s -relax-relocations=false -o - | llvm-readobj -r - | FileCheck %s --check-prefix=CHECK --check-prefix=I386
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// RUN: llvm-mc -filetype=obj -triple i386-pc-elfiamcu %s -relax-relocations=false -o - | llvm-readobj -r - | FileCheck %s --check-prefix=CHECK --check-prefix=IAMCU
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// Test that we produce the correct relocation types and that the relocations
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// correctly point to the section or the symbol.
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// IAMCU: Format: elf32-iamcu
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// I386: Format: elf32-i386
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// CHECK: Relocations [
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// CHECK-NEXT: Section {{.*}} .rel.text {
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/// Do not use STT_SECTION symbol for R_386_GOTOFF to work around a gold<2.34 bug
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/// https://sourceware.org/bugzilla/show_bug.cgi?id=16794
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// I386-NEXT: 0x2 R_386_GOTOFF .Lfoo
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// IAMCU-NEXT: 0x2 R_386_GOTOFF .rodata.str1.1
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// CHECK-NEXT: 0x{{[^ ]+}} R_386_PLT32 bar2
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// CHECK-NEXT: 0x{{[^ ]+}} R_386_GOTPC _GLOBAL_OFFSET_TABLE_
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// Relocation 3 (bar3@GOTOFF) is done with symbol 7 (bss)
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// CHECK-NEXT: 0x{{[^ ]+}} R_386_GOTOFF .bss
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// Relocation 4 (bar2@GOT) is of type R_386_GOT32
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// CHECK-NEXT: 0x{{[^ ]+}} R_386_GOT32 bar2j
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// Relocation 5 (foo@TLSGD) is of type R_386_TLS_GD
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// CHECK-NEXT: 0x20 R_386_TLS_GD foo
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// Relocation 6 ($foo@TPOFF) is of type R_386_TLS_LE_32
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// CHECK-NEXT: 0x25 R_386_TLS_LE_32 foo
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// Relocation 7 (foo@INDNTPOFF) is of type R_386_TLS_IE
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// CHECK-NEXT: 0x2B R_386_TLS_IE foo
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// Relocation 8 (foo@NTPOFF) is of type R_386_TLS_LE
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// CHECK-NEXT: 0x31 R_386_TLS_LE foo
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// Relocation 9 (foo@GOTNTPOFF) is of type R_386_TLS_GOTIE
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// CHECK-NEXT: 0x37 R_386_TLS_GOTIE foo
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// Relocation 10 (foo@TLSLDM) is of type R_386_TLS_LDM
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// CHECK-NEXT: 0x3D R_386_TLS_LDM foo
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// Relocation 11 (foo@DTPOFF) is of type R_386_TLS_LDO_32
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// CHECK-NEXT: 0x43 R_386_TLS_LDO_32 foo
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// Relocation 12 (calll 4096) is of type R_386_PC32
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// CHECK-NEXT: 0x48 R_386_PC32 -
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// Relocation 13 (zed@GOT) is of type R_386_GOT32 and uses the symbol
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// CHECK-NEXT: 0x4E R_386_GOT32 zed
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// Relocation 14 (zed@GOTOFF) is of type R_386_GOTOFF and uses the symbol
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// CHECK-NEXT: 0x54 R_386_GOTOFF zed
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// Relocation 15 (zed@INDNTPOFF) is of type R_386_TLS_IE and uses the symbol
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// CHECK-NEXT: 0x5A R_386_TLS_IE zed
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// Relocation 16 (zed@NTPOFF) is of type R_386_TLS_LE and uses the symbol
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// CHECK-NEXT: 0x60 R_386_TLS_LE zed
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// Relocation 17 (zed@GOTNTPOFF) is of type R_386_TLS_GOTIE and uses the symbol
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// CHECK-NEXT: 0x66 R_386_TLS_GOTIE zed
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// Relocation 18 (zed@PLT) is of type R_386_PLT32 and uses the symbol
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// CHECK-NEXT: 0x6B R_386_PLT32 zed
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// Relocation 19 (zed@TLSGD) is of type R_386_TLS_GD and uses the symbol
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// CHECK-NEXT: 0x71 R_386_TLS_GD zed
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// Relocation 20 (zed@TLSLDM) is of type R_386_TLS_LDM and uses the symbol
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// CHECK-NEXT: 0x77 R_386_TLS_LDM zed
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// Relocation 21 (zed@TPOFF) is of type R_386_TLS_LE_32 and uses the symbol
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// CHECK-NEXT: 0x7D R_386_TLS_LE_32 zed
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// Relocation 22 (zed@DTPOFF) is of type R_386_TLS_LDO_32 and uses the symbol
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// CHECK-NEXT: 0x83 R_386_TLS_LDO_32 zed
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// Relocation 23 ($bar) is of type R_386_32 and uses the section
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// CHECK-NEXT: 0x{{[^ ]+}} R_386_32 .text
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// Relocation 24 (foo@GOTTPOFF(%edx)) is of type R_386_TLS_IE_32 and uses the
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// symbol
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// CHECK-NEXT: 0x8E R_386_TLS_IE_32 foo
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// Relocation 25 (_GLOBAL_OFFSET_TABLE_-bar2) is of type R_386_GOTPC.
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// CHECK-NEXT: 0x94 R_386_GOTPC _GLOBAL_OFFSET_TABLE_
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// Relocation 26 (und_symbol-bar2) is of type R_386_PC32
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// CHECK-NEXT: 0x9A R_386_PC32 und_symbol
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// Relocation 27 (und_symbol-bar2) is of type R_386_PC16
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// CHECK-NEXT: 0x9E R_386_PC16 und_symbol
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// Relocation 28 (und_symbol-bar2) is of type R_386_PC8
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// CHECK-NEXT: 0xA0 R_386_PC8 und_symbol
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// CHECK-NEXT: 0xA3 R_386_GOTOFF und_symbol
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// Relocation 29 (zed@PLT) is of type R_386_PLT32 and uses the symbol
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// CHECK-NEXT: 0xA9 R_386_PLT32 zed
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// CHECK-NEXT: 0xAF R_386_PC32 tr_start
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// CHECK-NEXT: 0xB3 R_386_16 foo
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// CHECK-NEXT: 0xB5 R_386_8 foo
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// CHECK-NEXT: }
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// CHECK-NEXT: ]
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.text
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bar:
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leal .Lfoo@GOTOFF(%ebx), %eax
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.global bar2
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bar2:
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calll bar2@PLT
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addl $_GLOBAL_OFFSET_TABLE_, %ebx
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movb bar3@GOTOFF(%ebx), %al
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.type bar3,@object
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.local bar3
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.comm bar3,1,1
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movl bar2j@GOT(%eax), %eax
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leal foo@TLSGD(, %ebx,1), %eax
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movl $foo@TPOFF, %edx
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movl foo@INDNTPOFF, %ecx
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addl foo@NTPOFF(%eax), %eax
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addl foo@GOTNTPOFF(%ebx), %ecx
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leal foo@TLSLDM(%ebx), %eax
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leal foo@DTPOFF(%eax), %edx
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calll 4096
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movl zed@GOT(%eax), %eax
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movl zed@GOTOFF(%eax), %eax
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movl zed@INDNTPOFF(%eax), %eax
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movl zed@NTPOFF(%eax), %eax
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movl zed@GOTNTPOFF(%eax), %eax
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call zed@PLT
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movl zed@TLSGD(%eax), %eax
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movl zed@TLSLDM(%eax), %eax
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movl zed@TPOFF(%eax), %eax
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movl zed@DTPOFF(%eax), %eax
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pushl $bar
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addl foo@GOTTPOFF(%edx), %eax
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subl _GLOBAL_OFFSET_TABLE_-bar2, %ebx
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leal und_symbol-bar2(%edx),%ecx
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.word und_symbol-bar2
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.byte und_symbol-bar2
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leal 1 + und_symbol@GOTOFF, %edi
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movl zed@PLT(%eax), %eax
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.code64
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jmpq *tr_start(%rip)
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.word foo
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.byte foo
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.section zedsec,"awT",@progbits
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zed:
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.long 0
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.section .rodata.str1.16,"aMS",@progbits,1
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.Lfoo:
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.asciz "bool llvm::llvm_start_multithreaded()"
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