104 lines
3.2 KiB
ArmAsm
104 lines
3.2 KiB
ArmAsm
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# RUN: rm -rf %t && mkdir -p %t
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# RUN: llvm-mc -triple=arm64-apple-ios7.0.0 -filetype=obj -o %t/foo.o %s
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# RUN: llvm-rtdyld -triple=arm64-apple-ios7.0.0 -map-section foo.o,__text=0x10bc0 -dummy-extern _dummy1=0x100000 -verify -check=%s %t/foo.o
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.section __TEXT,__text,regular,pure_instructions
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.ios_version_min 7, 0
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.globl _foo
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.align 2
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_foo:
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movz w0, #0
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ret
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.globl _test_branch_reloc
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.align 2
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# Test ARM64_RELOC_BRANCH26 relocation. The branch instruction only encodes 26
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# bits of the 28-bit possible branch range. The lower two bits are always zero
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# and therefore ignored.
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# rtdyld-check: decode_operand(br1, 0)[25:0] = (_foo - br1)[27:2]
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_test_branch_reloc:
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br1:
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b _foo
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ret
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.globl _test_branch_reloc_bl
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.align 2
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# rtdyld-check: decode_operand(br2, 0)[25:0] = (_foo - br2)[27:2]
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_test_branch_reloc_bl:
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br2:
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bl _foo
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ret
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# Test ARM64_RELOC_PAGE21 and ARM64_RELOC_PAGEOFF12 relocation. adrp encodes
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# the PC-relative page (4 KiB) difference between the adrp instruction and the
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# variable ptr. ldr encodes the offset of the variable within the page. The ldr
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# instruction perfroms an implicit shift on the encoded immediate (imm<<3).
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# rtdyld-check: decode_operand(adrp1, 1) = (_ptr[32:12] - adrp1[32:12])
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# rtdyld-check: decode_operand(ldr1, 2) = _ptr[11:3]
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.globl _test_adrp_ldr
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.align 2
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_test_adrp_ldr:
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adrp1:
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adrp x0, _ptr@PAGE
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ldr1:
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ldr x0, [x0, _ptr@PAGEOFF]
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ret
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# Test ARM64_RELOC_GOT_LOAD_PAGE21 and ARM64_RELOC_GOT_LOAD_PAGEOFF12
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# relocation. adrp encodes the PC-relative page (4 KiB) difference between the
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# adrp instruction and the GOT entry for ptr. ldr encodes the offset of the GOT
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# entry within the page. The ldr instruction perfroms an implicit shift on the
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# encoded immediate (imm<<3).
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# rtdyld-check: *{8}(stub_addr(foo.o/__text, _ptr)) = _ptr
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# rtdyld-check: decode_operand(adrp2, 1) = (stub_addr(foo.o/__text, _ptr)[32:12] - adrp2[32:12])
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# rtdyld-check: decode_operand(ldr2, 2) = stub_addr(foo.o/__text, _ptr)[11:3]
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.globl _test_adrp_ldr
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.align 2
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_test_got_adrp_ldr:
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adrp2:
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adrp x0, _ptr@GOTPAGE
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ldr2:
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ldr x0, [x0, _ptr@GOTPAGEOFF]
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ret
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# rtdyld-check: decode_operand(add1, 2) = (tgt+8)[11:2] << 2
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.globl _test_explicit_addend_reloc
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.align 4
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_test_explicit_addend_reloc:
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add1:
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add x0, x0, tgt@PAGEOFF+8
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.align 3
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tgt:
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.long 0
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.long 0
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.long 7
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# Test ARM64_RELOC_UNSIGNED relocation. The absolute 64-bit address of the
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# function should be stored at the 8-byte memory location.
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# rtdyld-check: *{8}_ptr = _foo
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.section __DATA,__data
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.globl _ptr
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.align 3
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.fill 4096, 1, 0
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_ptr:
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.quad _foo
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# Test ARM64_RELOC_SUBTRACTOR.
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# rtdyld-check: *{8}_subtractor_result = _test_branch_reloc - _foo
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_subtractor_result:
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.quad _test_branch_reloc - _foo
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# Test 32-bit relative ARM64_RELOC_POINTER_TO_GOT
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# rtdyld-check: *{4}_pointer_to_got_32_rel = (stub_addr(foo.o/__data, _dummy1) - _pointer_to_got_32_rel)
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_pointer_to_got_32_rel:
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.long _dummy1@got - .
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# Test 64-bit absolute ARM64_RELOC_POINTER_TO_GOT
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# rtdyld-check: *{8}_pointer_to_got_64_abs = stub_addr(foo.o/__data, _dummy1)
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_pointer_to_got_64_abs:
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.quad _dummy1@got
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.subsections_via_symbols
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