8b0f47bfa4
Wasm has no unified virtual memory space as other object formats and architectures do, so previously WasmObjectFile reported 0 for all section addresses, and until 428cf71ff used section offsets for function symbols. Now we use file offsets for function symbols, and this change switches section addresses to do the same (in linked files). The main result of this is that objdump now reports VMAs in section listings, and also uses file offets rather than section offsets when disassembling linked binaries (matching the behavior of other disassemblers and stack traces produced by browwsers). To make this work, this PR also updates objdump's generation of synthetics fallback symbols to match lib/Object and also correctly plumbs symbol types for regular and dummy symbols through to the backend to avoid needing special knowledge of address 0. This also paves the way for generating symbols from name sections rather than symbol tables or imports (see #76107) by allowing the disassembler's synthetic fallback symbols match the name-section generated symbols (in a followup PR).
42 lines
1.7 KiB
ArmAsm
42 lines
1.7 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %s -o %t.o
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# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/merge-string-debug2.s -o %t2.o
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# RUN: wasm-ld %t.o %t2.o -o %t.wasm --no-entry
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# RUN: llvm-readobj -x .debug_str %t.wasm | FileCheck %s --check-prefixes CHECK,CHECK-O1
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# Check that we -r/--reclocatable can handle string merging too
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# RUN: wasm-ld --relocatable %t.o %t2.o -o %t3.o
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# RUN: wasm-ld -O1 %t3.o -o %t.wasm --no-entry
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# RUN: llvm-readobj -x .debug_str %t.wasm | FileCheck %s --check-prefixes CHECK,CHECK-O1
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# RUN: wasm-ld -O0 %t.o %t2.o -o %tO0.wasm --no-entry
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# RUN: llvm-readobj -x .debug_str %tO0.wasm | FileCheck %s --check-prefixes CHECK,CHECK-O0
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# RUN: llvm-readobj -x .debug_str_offsets %tO0.wasm | FileCheck %s --check-prefixes CHECK-OFFSETS
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.section .debug_str,"S",@
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.Linfo_string0:
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.asciz "clang version 13.0.0"
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.Linfo_string1:
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.asciz "foobar"
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.section .debug_other,"",@
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.int32 .Linfo_string0
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.section .debug_str_offsets,"",@
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.int32 .Linfo_string0
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.int32 .Linfo_string0
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.int32 .Linfo_string0
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# CHECK: Hex dump of section '.debug_str':
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# CHECK-O0: 0x00000025 636c616e 67207665 7273696f 6e203133 clang version 13
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# CHECK-O0: 0x00000035 2e302e30 00666f6f 62617200 636c616e .0.0.foobar.clan
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# CHECK-O0: 0x00000045 67207665 7273696f 6e203133 2e302e30 g version 13.0.0
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# CHECK-O0: 0x00000055 00626172 00666f6f 00 .bar.foo.
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# CHECK-O1: 0x00000025 666f6f62 61720066 6f6f0063 6c616e67 foobar.foo.clang
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# CHECK-O1: 0x00000035 20766572 73696f6e 2031332e 302e3000 version 13.0.0.
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# CHECK-OFFSETS: Hex dump of section '.debug_str_offsets':
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# CHECK-OFFSETS: 0x0000007e 00000000 00000000 00000000 ............
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