130 lines
4.3 KiB
ArmAsm
130 lines
4.3 KiB
ArmAsm
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# RUN: rm -rf %t && mkdir -p %t
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# RUN: llvm-mc -triple=x86_64-unknown-linux -position-independent -filetype=obj -o %t/elf_reloc.o %s
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# RUN: llvm-jitlink -noexec -slab-allocate 100Kb -slab-address 0xfff00000 \
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# RUN: -define-abs external_data=0x1 \
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# RUN: -define-abs extern_in_range32=0xffe00000 \
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# RUN: -define-abs extern_out_of_range32=0x7fff00000000 \
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# RUN: -check %s %t/elf_reloc.o
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#
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# Test standard ELF relocations.
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.text
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.file "testcase.c"
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# Empty main entry point.
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.globl main
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.p2align 4, 0x90
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.type main,@function
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main:
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retq
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.size main, .-main
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# Test PCRel32 / R_X86_64_PC32 handling.
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# jitlink-check: decode_operand(test_pcrel32, 4) = named_data - next_pc(test_pcrel32)
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.globl test_pcrel32
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.p2align 4, 0x90
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.type test_pcrel32,@function
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test_pcrel32:
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movl named_data(%rip), %eax
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.size test_pcrel32, .-test_pcrel32
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.globl named_func
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.p2align 4, 0x90
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.type named_func,@function
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named_func:
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xorq %rax, %rax
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.size named_func, .-named_func
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# Check R_X86_64_PLT32 handling with a call to a local function. This produces a
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# Branch32 edge that is resolved like a regular PCRel32 (no PLT entry created).
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#
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# jitlink-check: decode_operand(test_call_local, 0) = named_func - next_pc(test_call_local)
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.globl test_call_local
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.p2align 4, 0x90
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.type test_call_local,@function
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test_call_local:
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callq named_func
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.size test_call_local, .-test_call_local
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# Check R_X86_64_PLT32 handling with a call to an external. This produces a
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# Branch32ToStub edge, because externals are not defined locally. During
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# resolution, the target turns out to be in-range from the callsite and so the
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# edge is relaxed in post-allocation optimization.
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#
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# jitlink-check: decode_operand(test_call_extern, 0) = extern_in_range32 - next_pc(test_call_extern)
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.globl test_call_extern
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.p2align 4, 0x90
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.type test_call_extern,@function
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test_call_extern:
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callq extern_in_range32@plt
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.size test_call_extern, .-test_call_extern
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# Check R_X86_64_PLT32 handling with a call to an external via PLT. This
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# produces a Branch32ToStub edge, because externals are not defined locally.
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# As the target is out-of-range from the callsite, the edge keeps using its PLT
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# entry.
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#
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# jitlink-check: decode_operand(test_call_extern_plt, 0) = \
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# jitlink-check: stub_addr(elf_reloc.o, extern_out_of_range32) - next_pc(test_call_extern_plt)
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# jitlink-check: *{8}(got_addr(elf_reloc.o, extern_out_of_range32)) = extern_out_of_range32
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.globl test_call_extern_plt
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.p2align 4, 0x90
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.type test_call_extern_plt,@function
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test_call_extern_plt:
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callq extern_out_of_range32@plt
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.size test_call_extern_plt, .-test_call_extern_plt
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# Test GOTPCREL handling. We want to check both the offset to the GOT entry and its
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# contents.
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# jitlink-check: decode_operand(test_gotpcrel, 4) = got_addr(elf_reloc.o, named_data) - next_pc(test_gotpcrel)
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# jitlink-check: *{8}(got_addr(elf_reloc.o, named_data)) = named_data
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.globl test_gotpcrel
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.p2align 4, 0x90
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.type test_gotpcrel,@function
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test_gotpcrel:
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movl named_data@GOTPCREL(%rip), %eax
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.size test_gotpcrel, .-test_gotpcrel
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# Test REX_GOTPCRELX handling. We want to check both the offset to the GOT entry and its
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# contents.
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# jitlink-check: decode_operand(test_rex_gotpcrelx, 4) = \
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# jitlink-check: got_addr(elf_reloc.o, external_data) - next_pc(test_rex_gotpcrelx)
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.globl test_rex_gotpcrelx
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.p2align 4, 0x90
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.type test_rex_gotpcrelx,@function
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test_rex_gotpcrelx:
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movq external_data@GOTPCREL(%rip), %rax
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.size test_rex_gotpcrelx, .-test_rex_gotpcrelx
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.type named_data,@object
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.data
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.p2align 3
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named_data:
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.quad 42
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.size named_data, 8
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# Test BSS / zero-fill section handling.
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# llvm-jitlink: *{4}bss_variable = 0
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.type bss_variable,@object
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.bss
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.globl bss_variable
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.p2align 2
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bss_variable:
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.long 0
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.size bss_variable, 4
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.ident "clang version 10.0.0-4ubuntu1 "
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.section ".note.GNU-stack","",@progbits
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.addrsig
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