aa0c571a5f
This `R_WASM_MEMORY_ADDR_SELFREL_I32` relocation represents an offset between its relocating address and the symbol address. It's very similar to `R_X86_64_PC32` but restricted to be used for only data segments. ``` S + A - P ``` A: Represents the addend used to compute the value of the relocatable field. P: Represents the place of the storage unit being relocated. S: Represents the value of the symbol whose index resides in the relocation entry. Proposal: https://github.com/WebAssembly/tool-conventions/issues/162 Differential Revision: https://reviews.llvm.org/D96659
49 lines
1.3 KiB
LLVM
49 lines
1.3 KiB
LLVM
; RUN: llc -O0 -filetype=obj %s -o - | llvm-readobj -r --expand-relocs - | FileCheck %s
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; CHECK: Format: WASM
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; CHECK: Relocations [
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; CHECK-NEXT: Section (3) DATA {
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; CHECK-NEXT: Relocation {
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; CHECK-NEXT: Type: R_WASM_MEMORY_ADDR_LOCREL_I32 (23)
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; CHECK-NEXT: Offset: 0x6
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; CHECK-NEXT: Symbol: foo
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; CHECK-NEXT: Addend: 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Relocation {
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; CHECK-NEXT: Type: R_WASM_MEMORY_ADDR_LOCREL_I32 (23)
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; CHECK-NEXT: Offset: 0xA
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; CHECK-NEXT: Symbol: fizz
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; CHECK-NEXT: Addend: 0
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; CHECK-NEXT: }
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; CHECK-NEXT: Relocation {
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; CHECK-NEXT: Type: R_WASM_MEMORY_ADDR_LOCREL_I32 (23)
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; CHECK-NEXT: Offset: 0x17
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; CHECK-NEXT: Symbol: foo
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; CHECK-NEXT: Addend: 4
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; CHECK-NEXT: }
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; CHECK-NEXT: }
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; CHECK-NEXT: ]
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target triple = "wasm32-unknown-unknown"
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; @foo - @bar
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@foo = external global i32, align 4
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@bar = constant i32 sub (
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i32 ptrtoint (i32* @foo to i32),
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i32 ptrtoint (i32* @bar to i32)
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), section ".sec1"
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; @foo - @addend + 4
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@fizz = constant i32 42, align 4, section ".sec2"
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@addend = constant i32 sub (
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i32 ptrtoint (i32* @foo to i32),
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i32 ptrtoint (i32* @fizz to i32)
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), section ".sec2"
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@x_sec = constant i32 sub (
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i32 ptrtoint (i32* @fizz to i32),
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i32 ptrtoint (i32* @x_sec to i32)
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), section ".sec1"
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