130 lines
3.2 KiB
Plaintext
130 lines
3.2 KiB
Plaintext
# REQUIRES: mips
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# Conditions:
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# a) Linking a non-shared executable file.
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# b) Relocations' target is a symbol defined in the shared object.
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# c) The target symbol is referenced by both branch (R_MIPS_26)
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# and regular (R_MIPS_32) relocations.
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# Check:
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# a) There should be no R_MIPS_REL32 relocation.
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# b) Linker creates a single PLT entry.
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# c) STO_MIPS_PLT flag in the dynamic symbol table for symbols require
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# a pointer equality.
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#
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# RUN: yaml2obj -format=elf -docnum 1 %s > %t-so.o
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# RUN: lld -flavor gnu -target mipsel -shared -o %t.so %t-so.o
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# RUN: yaml2obj -format=elf -docnum 2 %s > %t-o.o
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# RUN: lld -flavor gnu -target mipsel -e T0 -o %t.exe %t-o.o %t.so
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# RUN: llvm-objdump -disassemble %t.exe | FileCheck -check-prefix=PLT %s
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# RUN: llvm-readobj -dt -r %t.exe | FileCheck -check-prefix=PLT-SYM %s
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# PLT: Disassembly of section .plt:
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# PLT-NEXT: .plt:
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# PLT-NEXT: 400170: 40 00 1c 3c lui $gp, 64
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# PLT-NEXT: 400174: 00 20 99 8f lw $25, 8192($gp)
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# PLT-NEXT: 400178: 00 20 9c 27 addiu $gp, $gp, 8192
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# PLT-NEXT: 40017c: 23 c0 1c 03 subu $24, $24, $gp
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# PLT-NEXT: 400180: 21 78 e0 03 move $15, $ra
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# PLT-NEXT: 400184: 82 c0 18 00 srl $24, $24, 2
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# PLT-NEXT: 400188: 09 f8 20 03 jalr $25
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# PLT-NEXT: 40018c: fe ff 18 27 addiu $24, $24, -2
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#
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# PLT-NEXT: 400190: 40 00 0f 3c lui $15, 64
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# PLT-NEXT: 400194: 08 20 f9 8d lw $25, 8200($15)
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# PLT-NEXT: 400198: 08 00 20 03 jr $25
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# PLT-NEXT: 40019c: 08 20 f8 25 addiu $24, $15, 8200
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#
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# PLT-SYM: Relocations [
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# PLT-SYM-NEXT: Section (5) .rel.plt {
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# PLT-SYM-NEXT: 0x402008 R_MIPS_JUMP_SLOT T1 0x0
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# PLT-SYM-NEXT: }
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# PLT-SYM-NEXT: ]
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# PLT-SYM: Name: T1@ (1)
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# PLT-SYM-NEXT: Value: 0x400190
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# PLT-SYM-NEXT: Size: 0
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# PLT-SYM-NEXT: Binding: Global (0x1)
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# PLT-SYM-NEXT: Type: Function (0x2)
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# PLT-SYM-NEXT: Other: 8
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# PLT-SYM-NEXT: Section: Undefined (0x0)
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# so.o
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---
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_MIPS
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Flags: [EF_MIPS_PIC, EF_MIPS_CPIC, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32]
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Size: 0x0C
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AddressAlign: 16
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Flags: [SHF_EXECINSTR, SHF_ALLOC]
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Symbols:
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Global:
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- Name: T1
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Section: .text
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Type: STT_FUNC
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Value: 0x0
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Size: 4
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# o.o
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---
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FileHeader: !FileHeader
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_MIPS
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Flags: [EF_MIPS_CPIC, EF_MIPS_ABI_O32, EF_MIPS_ARCH_32]
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Size: 0x08
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AddressAlign: 16
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Flags: [SHF_EXECINSTR, SHF_ALLOC]
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- Name: .data
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Type: SHT_PROGBITS
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Size: 0x08
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AddressAlign: 16
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Flags: [SHF_WRITE, SHF_ALLOC]
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- Name: .rel.text
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Type: SHT_REL
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Info: .text
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AddressAlign: 4
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Relocations:
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- Offset: 0x04
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Symbol: T1
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Type: R_MIPS_26
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- Name: .rel.data
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Type: SHT_REL
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Info: .data
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AddressAlign: 4
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Relocations:
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- Offset: 0x04
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Symbol: T1
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Type: R_MIPS_32
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Symbols:
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Global:
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- Name: T0
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Section: .text
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Type: STT_FUNC
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Value: 0x0
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Size: 8
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- Name: T1
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Type: STT_FUNC
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- Name: D0
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Section: .data
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Type: STT_OBJECT
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Value: 0x0
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Size: 8
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...
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