forked from OSchip/llvm-project
91 lines
2.6 KiB
ArmAsm
91 lines
2.6 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
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# RUN: wasm-ld -r -o %t.wasm %t.o
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# RUN: obj2yaml %t.wasm | FileCheck %s
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# RUN: llvm-objdump --disassemble-symbols=_start --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck %s --check-prefixes DIS
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.hidden foo
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.hidden bar
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.globl foo
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.globl bar
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# Similar to what would be generated from: `int foo[76]`
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.section .bss.foo,"",@
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.p2align 4
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foo:
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.skip 304
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.size foo, 304
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# bar contains a pointer to the 16th element of foo, which happens to be 64
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# bytes in. This generates an addend of 64 which is the value at which signed
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# and unsigned LEB encodes will differ.
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.section .data.bar,"",@
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.p2align 2
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bar:
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.int32 foo+64
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.size bar, 4
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# Check that negative addends also work here
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.section .data.negative_addend,"",@
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.p2align 2
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negative_addend:
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.int32 foo-16
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.size negative_addend, 4
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.globl _start
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.section .text,"",@
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_start:
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.functype _start () -> ()
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i32.const 0
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i32.load foo + 10
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drop
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i32.const 0
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i32.load foo - 10
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drop
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i32.const 0
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# This will underflow because i32.load (and the
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# corresponding relocation type) take an unsgiend (U32)
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# immediate.
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i32.load foo - 2048
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drop
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end_function
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# CHECK: - Type: CODE
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# CHECK-NEXT: Relocations:
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_LEB
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Offset: 0x7
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# CHECK-NEXT: Addend: 10
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_LEB
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Offset: 0x11
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# CHECK-NEXT: Addend: -10
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_LEB
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Offset: 0x1B
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# CHECK-NEXT: Addend: -2048
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# CHECK: - Type: DATA
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# CHECK-NEXT: Relocations:
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_I32
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Offset: 0x6
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# CHECK-NEXT: Addend: 64
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_I32
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: Offset: 0xF
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# CHECK-NEXT: Addend: -16
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# DIS: <_start>:
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# DIS-EMPTY:
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# DIS-NEXT: i32.const 0
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# DIS-NEXT: i32.load 26
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# DIS-NEXT: drop
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# DIS-NEXT: i32.const 0
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# DIS-NEXT: i32.load 6
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# DIS-NEXT: drop
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# DIS-NEXT: i32.const 0
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# TODO(sbc): We should probably error here rather than allowing u32 to wrap
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# DIS-NEXT: i32.load 4294965264
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# DIS-NEXT: drop
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# DIS-NEXT: end
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