derek.holloway
7502bf64a4
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38 lines
1.7 KiB
Plaintext
38 lines
1.7 KiB
Plaintext
## Objects produced by assemblers that emit mapping symbols but predate the
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## "$x<ISAString>" extension use a bare "$x" to mark the start of code.
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## llvm-objdump must treat the bare "$x" as an opt-out: it carries no ISA
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## information, so the decoder falls back to the file-level feature set
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## derived from Tag_RISCV_arch and any --mattr overrides (equivalent to the
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## fully-legacy case with no mapping symbols at all).
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##
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## This cannot be assembled because modern llvm-mc always emits
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## "$x<ISAString>"; yaml2obj lets us handcraft the bare-"$x" layout.
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# RUN: yaml2obj %s -o %t.o
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# RUN: llvm-objdump -d -M no-aliases --no-show-raw-insn %t.o | FileCheck %s
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# CHECK-LABEL: <.text>:
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## 0x003676d7 = vsetvli a3, a2, e8, m8, tu, mu — an encoding that only
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## decodes when V is enabled. V is provided by Tag_RISCV_arch, so the
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## instruction must still decode correctly despite the bare "$x" marker.
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# CHECK-NEXT: 0: vsetvli a3, a2, e8, m8, tu, mu
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_REL
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Machine: EM_RISCV
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Sections:
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- Name: .text
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Type: SHT_PROGBITS
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Flags: [ SHF_ALLOC, SHF_EXECINSTR ]
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Content: D7763600
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- Name: .riscv.attributes
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Type: SHT_RISCV_ATTRIBUTES
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Content: 41bb00000072697363760001b10000000572763634693270315f6d3270305f613270315f663270325f643270325f633270305f763170305f7a696373723270305f7a6d6d756c3170305f7a61616d6f3170305f7a616c7273633170305f7a63613170305f7a63643170305f7a76653332663170305f7a76653332783170305f7a76653634643170305f7a76653634663170305f7a76653634783170305f7a766c313238623170305f7a766c3332623170305f7a766c36346231703000
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Symbols:
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- Name: $x
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Section: .text
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Value: 0x0
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