derek.holloway
7502bf64a4
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81 lines
3.2 KiB
ArmAsm
81 lines
3.2 KiB
ArmAsm
; RUN: llvm-mc -triple riscv32-apple-macho -filetype=obj %s -o %t.o
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; RUN: llvm-objdump -dr --section __data --full-contents %t.o | FileCheck %s --check-prefix=CHECK
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; RUN: llvm-otool -Vtr %t.o | FileCheck %s --check-prefix=OTOOL
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; Data section relocations
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.data
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; CHECK: 0000 2a000000 0c000000 00000000 04000000 *...............
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; CHECK-NEXT: 0010 00000000 02000000 ........
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; Plain integer, no relocation needed.
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.global _a
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; CHECK-LABEL: 00000000 <ltmp1>:
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; CHECK-NEXT: 0: 002a <unknown>
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; CHECK-NEXT: 2: 0000 <unknown>
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_a:
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.word 42
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; Plain integer, no relocation needed.
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.global _b
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; CHECK-LABEL: 00000004 <_b>:
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; CHECK-NEXT: 4: 000c <unknown>
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; CHECK-NEXT: 6: 0000 <unknown>
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_b:
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.word 12
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; Pointer to symbol, require relocation. The 2 chunks of 2 bytes
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; each at PC=8 and PC=a are filled with 0 as a placeholder.
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.global _ref
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; CHECK-LABEL: 00000008 <_ref>:
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; CHECK-NEXT: 8: 0000 <unknown>
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; CHECK-NEXT: 00000008: RISCV_RELOC_UNSIGNED _b
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; CHECK-NEXT: a: 0000 <unknown>
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_ref:
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.word _b
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; Same as the previous example of pointer to symnbol, but with
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; offset. The placeholder data is storing the offset (00000004).
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.global _ref_offset
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; CHECK-LABEL: 0000000c <_ref_offset>:
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; CHECK-NEXT: c: 0004 <unknown>
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; CHECK-NEXT: 0000000c: RISCV_RELOC_UNSIGNED _b
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; CHECK-NEXT: e: 0000 <unknown>
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_ref_offset:
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.word _b + 4
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.global _sub
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; Difference of addresses to symbols. The linker will take care of
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; replacing the 4 bytes 00000000 with the difference of the address
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; of _ref minus the addresss of _elsewhere.
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_sub:
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; CHECK-LABEL: 00000010 <_sub>:
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; CHECK-NEXT: 10: 0000 <unknown>
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; CHECK-NEXT: 00000010: RISCV_RELOC_SUBTRACTOR _elsewhere
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; CHECK-NEXT: 00000010: RISCV_RELOC_UNSIGNED _ref
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; CHECK-NEXT: 12: 0000 <unknown>
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.word _ref - _elsewhere
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; Same as before, but an additional offset is stored in the
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; placeholder 4 bytes to be used as the addend in the expression.
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.global _sub_add
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_sub_add:
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; CHECK-LABEL: 00000014 <_sub_add>:
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; CHECK-NEXT: 14: 0002 <unknown>
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; CHECK-NEXT: 00000014: RISCV_RELOC_SUBTRACTOR _elsewhere
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; CHECK-NEXT: 00000014: RISCV_RELOC_UNSIGNED _ref
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; CHECK-NEXT: 16: 0000 <unknown>
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.word _ref - _elsewhere + 2
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; CHECK-NOT: {{.}}
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; OTOOL-LABEL: Relocation information (__DATA,__data) 6 entries
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; OTOOL-NEXT: address pcrel length extern type scattered symbolnum/value
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; OTOOL-NEXT: 00000014 False long True 1 False _elsewhere
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; OTOOL-NEXT: 00000014 False long True 0 False _ref
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; OTOOL-NEXT: 00000010 False long True 1 False _elsewhere
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; OTOOL-NEXT: 00000010 False long True 0 False _ref
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; OTOOL-NEXT: 0000000c False long True 0 False _b
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; OTOOL-NEXT: 00000008 False long True 0 False _b
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; OTOOL-NEXT: Contents of (__TEXT,__text) section
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; OTOOL-NOT: {{.}}
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