# RUN: rm -rf %t && mkdir -p %t # RUN: llvm-mc -triple=arm64-apple-darwin19 -filetype=obj -o %t/macho_reloc.o %s # RUN: llvm-jitlink -noexec -define-abs external_data=0xdeadbeef -define-abs external_func=0xcafef00d -check=%s %t/macho_reloc.o .section __TEXT,__text,regular,pure_instructions .p2align 2 Lanon_func: ret .globl named_func .p2align 2 named_func: ret # Check ARM64_RELOC_BRANCH26 handling with a call to a local function. # The branch instruction only encodes 26 bits of the 28-bit possible branch # range, since the low 2 bits will always be zero. # # jitlink-check: decode_operand(test_local_call, 0)[25:0] = (named_func - test_local_call)[27:2] .globl test_local_call .p2align 2 test_local_call: bl named_func .globl _main .p2align 2 _main: ret # Check ARM64_RELOC_GOTPAGE21 / ARM64_RELOC_GOTPAGEOFF12 handling with a # reference to an external symbol. Validate both the reference to the GOT entry, # and also the content of the GOT entry. # # For the GOTPAGE21/ADRP instruction we have the 21-bit delta to the 4k page # containing the GOT entry for external_data. # # For the GOTPAGEOFF/LDR instruction we have the 12-bit offset of the entry # within the page. # # jitlink-check: *{8}(got_addr(macho_reloc.o, external_data)) = external_data # jitlink-check: decode_operand(test_gotpage21, 1) = (got_addr(macho_reloc.o, external_data)[32:12] - test_gotpage21[32:12]) # jitlink-check: decode_operand(test_gotpageoff12, 2) = got_addr(macho_reloc.o, external_data)[11:3] .globl test_gotpage21 .p2align 2 test_gotpage21: adrp x0, external_data@GOTPAGE .globl test_gotpageoff12 test_gotpageoff12: ldr x0, [x0, external_data@GOTPAGEOFF] # Check ARM64_RELOC_PAGE21 / ARM64_RELOC_PAGEOFF12 handling with a reference to # a local symbol. # # For the PAGE21/ADRP instruction we have the 21-bit delta to the 4k page # containing the global. # # For the GOTPAGEOFF12 relocation we test the ADD instruction, all LDR/GPR # variants and all LDR/Neon variants. # # jitlink-check: decode_operand(test_page21, 1) = ((named_data + 256) - test_page21)[32:12] # jitlink-check: decode_operand(test_pageoff12add, 2) = (named_data + 256)[11:0] # jitlink-check: decode_operand(test_pageoff12gpr8, 2) = (named_data + 256)[11:0] # jitlink-cherk: decode_operand(test_pageoff12gpr8s, 2) = (named_data + 256)[11:0] # jitlink-check: decode_operand(test_pageoff12gpr16, 2) = (named_data + 256)[11:1] # jitlink-check: decode_operand(test_pageoff12gpr16s, 2) = (named_data + 256)[11:1] # jitlink-check: decode_operand(test_pageoff12gpr32, 2) = (named_data + 256)[11:2] # jitlink-check: decode_operand(test_pageoff12gpr64, 2) = (named_data + 256)[11:3] # jitlink-check: decode_operand(test_pageoff12neon8, 2) = (named_data + 256)[11:0] # jitlink-check: decode_operand(test_pageoff12neon16, 2) = (named_data + 256)[11:1] # jitlink-check: decode_operand(test_pageoff12neon32, 2) = (named_data + 256)[11:2] # jitlink-check: decode_operand(test_pageoff12neon64, 2) = (named_data + 256)[11:3] # jitlink-check: decode_operand(test_pageoff12neon128, 2) = (named_data + 256)[11:4] .globl test_page21 .p2align 2 test_page21: adrp x0, named_data@PAGE + 256 .globl test_pageoff12add test_pageoff12add: add x0, x0, named_data@PAGEOFF + 256 .globl test_pageoff12gpr8 test_pageoff12gpr8: ldrb w0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12gpr8s test_pageoff12gpr8s: ldrsb w0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12gpr16 test_pageoff12gpr16: ldrh w0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12gpr16s test_pageoff12gpr16s: ldrsh w0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12gpr32 test_pageoff12gpr32: ldr w0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12gpr64 test_pageoff12gpr64: ldr x0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12neon8 test_pageoff12neon8: ldr b0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12neon16 test_pageoff12neon16: ldr h0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12neon32 test_pageoff12neon32: ldr s0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12neon64 test_pageoff12neon64: ldr d0, [x0, named_data@PAGEOFF + 256] .globl test_pageoff12neon128 test_pageoff12neon128: ldr q0, [x0, named_data@PAGEOFF + 256] # Check that calls to external functions trigger the generation of stubs and GOT # entries. # # jitlink-check: decode_operand(test_external_call, 0) = (stub_addr(macho_reloc.o, external_func) - test_external_call)[27:2] # jitlink-check: *{8}(got_addr(macho_reloc.o, external_func)) = external_func .globl test_external_call .p2align 2 test_external_call: bl external_func .section __DATA,__data # Storage target for non-extern ARM64_RELOC_SUBTRACTOR relocs. .p2align 3 Lanon_data: .quad 0x1111111111111111 # Check ARM64_RELOC_SUBTRACTOR Quad/Long in anonymous storage with anonymous # minuend: "LA: .quad LA - B + C". The anonymous subtrahend form # "LA: .quad B - LA + C" is not tested as subtrahends are not permitted to be # anonymous. # # Note: +8 offset in expression below to accounts for sizeof(Lanon_data). # jitlink-check: *{8}(section_addr(macho_reloc.o, __data) + 8) = (section_addr(macho_reloc.o, __data) + 8) - named_data + 2 .p2align 3 Lanon_minuend_quad: .quad Lanon_minuend_quad - named_data + 2 # Note: +16 offset in expression below to accounts for sizeof(Lanon_data) + sizeof(Lanon_minuend_long). # jitlink-check: *{4}(section_addr(macho_reloc.o, __data) + 16) = ((section_addr(macho_reloc.o, __data) + 16) - named_data + 2)[31:0] .p2align 2 Lanon_minuend_long: .long Lanon_minuend_long - named_data + 2 # Named quad storage target (first named atom in __data). # Align to 16 for use as 128-bit load target. .globl named_data .p2align 4 named_data: .quad 0x2222222222222222 .quad 0x3333333333333333 # An alt-entry point for named_data .globl named_data_alt_entry .p2align 3 .alt_entry named_data_alt_entry named_data_alt_entry: .quad 0 # Check ARM64_RELOC_UNSIGNED / quad / extern handling by putting the address of # a local named function into a quad symbol. # # jitlink-check: *{8}named_func_addr_quad = named_func .globl named_func_addr_quad .p2align 3 named_func_addr_quad: .quad named_func # Check ARM64_RELOC_UNSIGNED / quad / non-extern handling by putting the # address of a local anonymous function into a quad symbol. # # jitlink-check: *{8}anon_func_addr_quad = section_addr(macho_reloc.o, __text) .globl anon_func_addr_quad .p2align 3 anon_func_addr_quad: .quad Lanon_func # ARM64_RELOC_SUBTRACTOR Quad/Long in named storage with anonymous minuend # # jitlink-check: *{8}anon_minuend_quad1 = section_addr(macho_reloc.o, __data) - anon_minuend_quad1 + 2 # Only the form "B: .quad LA - B + C" is tested. The form "B: .quad B - LA + C" is # invalid because the subtrahend can not be local. .globl anon_minuend_quad1 .p2align 3 anon_minuend_quad1: .quad Lanon_data - anon_minuend_quad1 + 2 # jitlink-check: *{4}anon_minuend_long1 = (section_addr(macho_reloc.o, __data) - anon_minuend_long1 + 2)[31:0] .globl anon_minuend_long1 .p2align 2 anon_minuend_long1: .long Lanon_data - anon_minuend_long1 + 2 # Check ARM64_RELOC_SUBTRACTOR Quad/Long in named storage with minuend and subtrahend. # Both forms "A: .quad A - B + C" and "A: .quad B - A + C" are tested. # # Check "A: .quad B - A + C". # jitlink-check: *{8}subtrahend_quad2 = (named_data - subtrahend_quad2 - 2) .globl subtrahend_quad2 .p2align 3 subtrahend_quad2: .quad named_data - subtrahend_quad2 - 2 # Check "A: .long B - A + C". # jitlink-check: *{4}subtrahend_long2 = (named_data - subtrahend_long2 - 2)[31:0] .globl subtrahend_long2 .p2align 2 subtrahend_long2: .long named_data - subtrahend_long2 - 2 # Check "A: .quad A - B + C". # jitlink-check: *{8}minuend_quad3 = (minuend_quad3 - named_data - 2) .globl minuend_quad3 .p2align 3 minuend_quad3: .quad minuend_quad3 - named_data - 2 # Check "A: .long B - A + C". # jitlink-check: *{4}minuend_long3 = (minuend_long3 - named_data - 2)[31:0] .globl minuend_long3 .p2align 2 minuend_long3: .long minuend_long3 - named_data - 2 # Check ARM64_RELOC_SUBTRACTOR handling for exprs of the form # "A: .quad/long B - C + D", where 'B' or 'C' is at a fixed offset from 'A' # (i.e. is part of an alt_entry chain that includes 'A'). # # Check "A: .long B - C + D" where 'B' is an alt_entry for 'A'. # jitlink-check: *{4}subtractor_with_alt_entry_minuend_long = (subtractor_with_alt_entry_minuend_long_B - named_data + 2)[31:0] .globl subtractor_with_alt_entry_minuend_long .p2align 2 subtractor_with_alt_entry_minuend_long: .long subtractor_with_alt_entry_minuend_long_B - named_data + 2 .globl subtractor_with_alt_entry_minuend_long_B .p2align 2 .alt_entry subtractor_with_alt_entry_minuend_long_B subtractor_with_alt_entry_minuend_long_B: .long 0 # Check "A: .quad B - C + D" where 'B' is an alt_entry for 'A'. # jitlink-check: *{8}subtractor_with_alt_entry_minuend_quad = (subtractor_with_alt_entry_minuend_quad_B - named_data + 2) .globl subtractor_with_alt_entry_minuend_quad .p2align 3 subtractor_with_alt_entry_minuend_quad: .quad subtractor_with_alt_entry_minuend_quad_B - named_data + 2 .globl subtractor_with_alt_entry_minuend_quad_B .p2align 3 .alt_entry subtractor_with_alt_entry_minuend_quad_B subtractor_with_alt_entry_minuend_quad_B: .quad 0 # Check "A: .long B - C + D" where 'C' is an alt_entry for 'A'. # jitlink-check: *{4}subtractor_with_alt_entry_subtrahend_long = (named_data - subtractor_with_alt_entry_subtrahend_long_B + 2)[31:0] .globl subtractor_with_alt_entry_subtrahend_long .p2align 2 subtractor_with_alt_entry_subtrahend_long: .long named_data - subtractor_with_alt_entry_subtrahend_long_B + 2 .globl subtractor_with_alt_entry_subtrahend_long_B .p2align 2 .alt_entry subtractor_with_alt_entry_subtrahend_long_B subtractor_with_alt_entry_subtrahend_long_B: .long 0 # Check "A: .quad B - C + D" where 'B' is an alt_entry for 'A'. # jitlink-check: *{8}subtractor_with_alt_entry_subtrahend_quad = (named_data - subtractor_with_alt_entry_subtrahend_quad_B + 2) .globl subtractor_with_alt_entry_subtrahend_quad .p2align 3 subtractor_with_alt_entry_subtrahend_quad: .quad named_data - subtractor_with_alt_entry_subtrahend_quad_B + 2 .globl subtractor_with_alt_entry_subtrahend_quad_B .p2align 3 .alt_entry subtractor_with_alt_entry_subtrahend_quad_B subtractor_with_alt_entry_subtrahend_quad_B: .quad 0 # Check ARM64_POINTER_TO_GOT handling. # ARM64_POINTER_TO_GOT is a delta-32 to a GOT entry. # # jitlink-check: *{4}test_got = (got_addr(macho_reloc.o, external_data) - test_got)[31:0] .globl test_got .p2align 2 test_got: .long external_data@got - . # Check that unreferenced atoms in no-dead-strip sections are not dead stripped. # We need to use a local symbol for this as any named symbol will end up in the # ORC responsibility set, which is automatically marked live and would couse # spurious passes. # # jitlink-check: *{8}section_addr(macho_reloc.o, __nds_test_sect) = 0 .section __DATA,__nds_test_sect,regular,no_dead_strip .quad 0 # Check that unreferenced local symbols that have been marked no-dead-strip are # not dead-striped. # # jitlink-check: *{8}section_addr(macho_reloc.o, __nds_test_nlst) = 0 .section __DATA,__nds_test_nlst,regular .no_dead_strip no_dead_strip_test_symbol no_dead_strip_test_symbol: .quad 0 # Check that explicit zero-fill symbols are supported # jitlink-check: *{8}zero_fill_test = 0 .globl zero_fill_test .zerofill __DATA,__zero_fill_test,zero_fill_test,8,3 # Check that section alignments are respected. # We test this by introducing two segments with alignment 8, each containing one # byte of data. We require both symbols to have an aligned address. # # jitlink-check: section_alignment_check1[2:0] = 0 # jitlink-check: section_alignment_check2[2:0] = 0 .section __DATA,__sec_align_chk1 .p2align 3 .globl section_alignment_check1 section_alignment_check1: .byte 0 .section __DATA,__sec_align_chk2 .p2align 3 .globl section_alignment_check2 section_alignment_check2: .byte 0 .subsections_via_symbols