derek.holloway
7502bf64a4
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47 lines
1.6 KiB
ArmAsm
47 lines
1.6 KiB
ArmAsm
# REQUIRES: x86
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## i386-got32x-baseless.elf is a file produced using GNU as v.2.27
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## using following code and command line:
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## (as --32 -o base.o base.s)
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##
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## .text
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## .globl foo
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## .type foo, @function
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## foo:
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## nop
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##
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## _start:
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## movl foo@GOT, %eax
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## movl foo@GOT, %ebx
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## movl foo@GOT(%eax), %eax
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## movl foo@GOT(%ebx), %eax
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##
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## Result file contains four R_386_GOT32X relocations. Generated code
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## is also a four mov instructions. And first two has no base register:
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## <_start>:
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## 1: 8b 05 00 00 00 00 mov 0x0,%eax
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## 7: 8b 1d 00 00 00 00 mov 0x0,%ebx
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## d: 8b 80 00 00 00 00 mov 0x0(%eax),%eax
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## 13: 8b 83 00 00 00 00 mov 0x0(%ebx),%eax
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##
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## R_386_GOT32X is computed as G + A - GOT, but if it used without base
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## register, it should be calculated as G + A. Using without base register
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## is only allowed for non-PIC code.
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##
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# RUN: ld.lld %S/Inputs/i386-got32x-baseless.elf -o %t1
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# RUN: llvm-objdump --no-print-imm-hex --section-headers -d %t1 | FileCheck %s
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## 73728 == 0x12000 == ADDR(.got)
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# CHECK: Sections:
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# CHECK: Name Size VMA
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# CHECK: .got.plt 0000000c 00403134
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# CHECK: <_start>:
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# CHECK-NEXT: 401115: 8b 05 {{.*}} movl 4202800, %eax
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# CHECK-NEXT: 40111b: 8b 1d {{.*}} movl 4202800, %ebx
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# CHECK-NEXT: 401121: 8b 80 {{.*}} movl -4100(%eax), %eax
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# CHECK-NEXT: 401127: 8b 83 {{.*}} movl -4100(%ebx), %eax
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# RUN: not ld.lld %S/Inputs/i386-got32x-baseless.elf -o /dev/null -pie 2>&1 | \
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# RUN: FileCheck %s --check-prefix=ERR
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# ERR-COUNT-2: error: relocation R_386_GOT32X cannot be used against symbol 'foo'; recompile with -fPIC
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