a9ea1cfe6e
This is similar to etext/_etext in the ELF linker. Its useful in emscripten to know where the RO data data ends and the data begins (even though the Wasm format itself has no concept of RO data). See https://github.com/emscripten-core/emscripten/discussions/25939#discussioncomment-15243731
227 lines
8.8 KiB
ArmAsm
227 lines
8.8 KiB
ArmAsm
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %p/Inputs/hello.s -o %t.hello32.o
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# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown %s -o %t32.o
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# RUN: wasm-ld -m wasm32 -no-gc-sections --export=__rodata_start --export=__rodata_end --export=__data_end --export=__heap_base --allow-undefined --no-entry -o %t32.wasm %t32.o %t.hello32.o
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# RUN: obj2yaml %t32.wasm | FileCheck -DPTR=I32 %s
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#
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# RUN: llvm-mc -filetype=obj -triple=wasm64-unknown-unknown %p/Inputs/hello.s -o %t.hello64.o
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# RUN: llvm-mc -filetype=obj -triple=wasm64-unknown-unknown %s -o %t64.o
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# RUN: wasm-ld -m wasm64 -no-gc-sections --export=__rodata_start --export=__rodata_end --export=__data_end --export=__heap_base --allow-undefined --no-entry -o %t64.wasm %t64.o %t.hello64.o
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# RUN: obj2yaml %t64.wasm | FileCheck --check-prefixes CHECK,CHK64 -DPTR=I64 %s
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.section .data.foo,"",@
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.globl foo
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.hidden foo
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.p2align 2
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foo:
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.int32 1
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.size foo, 4
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.section .data.aligned_bar,"",@
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.globl aligned_bar
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.hidden aligned_bar
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.p2align 4
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aligned_bar:
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.int32 3
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.size aligned_bar, 4
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.section .rodata.baz,"",@
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.globl baz
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.hidden baz
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.p2align 2
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baz:
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.int32 42
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.size baz, 4
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.section .data.external_ref,"",@
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.globl external_ref
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.p2align 3
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external_ref:
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.int32 hello_str
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.size external_ref, 4
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.section .bss.local_struct,"",@
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.globl local_struct
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.hidden local_struct
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.p2align 2
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local_struct:
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.skip 8
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.size local_struct, 8
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.section .data.local_struct_internal_ptr,"",@
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.globl local_struct_internal_ptr
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.hidden local_struct_internal_ptr
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.p2align 2
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local_struct_internal_ptr:
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.int32 local_struct+4
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.size local_struct_internal_ptr, 4
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.size hello_str, 4
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# CHECK: - Type: MEMORY
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# CHECK-NEXT: Memories:
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# CHK64-NEXT: - Flags: [ IS_64 ]
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# CHECK-NEXT: Minimum: 0x2
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# CHECK-NEXT: - Type: GLOBAL
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# CHECK-NEXT: Globals:
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# CHECK-NEXT: - Index: 0
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# CHECK-NEXT: Type: [[PTR]]
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# CHECK-NEXT: Mutable: true
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# CHECK-NEXT: InitExpr:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65536
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# CHECK-NEXT: - Index: 1
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# CHECK-NEXT: Type: [[PTR]]
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# CHECK-NEXT: Mutable: false
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# CHECK-NEXT: InitExpr:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65592
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# CHECK-NEXT: - Index: 2
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# CHECK-NEXT: Type: [[PTR]]
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# CHECK-NEXT: Mutable: false
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# CHECK-NEXT: InitExpr:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65536
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# CHECK-NEXT: - Index: 3
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# CHECK-NEXT: Type: [[PTR]]
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# CHECK-NEXT: Mutable: false
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# CHECK-NEXT: InitExpr:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65547
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# CHECK-NEXT: - Index: 4
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# CHECK-NEXT: Type: [[PTR]]
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# CHECK-NEXT: Mutable: false
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# CHECK-NEXT: InitExpr:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65600
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# CHECK: - Type: DATA
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# CHECK-NEXT: Segments:
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# CHECK-NEXT: - SectionOffset: 8
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# CHECK-NEXT: InitFlags: 0
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# CHECK-NEXT: Offset:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65536
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# CHECK-NEXT: Content: 2A00000068656C6C6F0A00
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# CHECK-NEXT: - SectionOffset: 26
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# CHECK-NEXT: InitFlags: 0
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# CHECK-NEXT: Offset:
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# CHECK-NEXT: Opcode: [[PTR]]_CONST
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# CHECK-NEXT: Value: 65552
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# RUN: wasm-ld -no-gc-sections --allow-undefined --no-entry \
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# RUN: --initial-memory=131072 --max-memory=131072 -o %t_max.wasm %t32.o \
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# RUN: %t.hello32.o
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# RUN: obj2yaml %t_max.wasm | FileCheck %s -check-prefix=CHECK-MAX
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# CHECK-MAX: - Type: MEMORY
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# CHECK-MAX-NEXT: Memories:
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# CHECK-MAX-NEXT: - Flags: [ HAS_MAX ]
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# CHECK-MAX-NEXT: Minimum: 0x2
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# CHECK-MAX-NEXT: Maximum: 0x2
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# RUN: wasm-ld --no-entry --initial-memory=327680 --no-growable-memory \
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# RUN: -o %t_max.wasm %t.hello32.o
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# RUN: obj2yaml %t_max.wasm | FileCheck %s -check-prefix=CHECK-NO-GROWTH
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# CHECK-NO-GROWTH: - Type: MEMORY
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# CHECK-NO-GROWTH-NEXT: Memories:
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# CHECK-NO-GROWTH-NEXT: - Flags: [ HAS_MAX ]
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# CHECK-NO-GROWTH-NEXT: Minimum: 0x5
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# CHECK-NO-GROWTH-NEXT: Maximum: 0x5
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# RUN: not wasm-ld --max-memory=262144 --no-growable-memory \
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# RUN: --no-entry -o %t_max.wasm %t.hello32.o 2>&1 \
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# RUN: | FileCheck %s --check-prefix CHECK-NO-GROWTH-COMPAT-ERROR
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# CHECK-NO-GROWTH-COMPAT-ERROR: --max-memory is incompatible with --no-growable-memory
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# RUN: wasm-ld -no-gc-sections --allow-undefined --no-entry --shared-memory \
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# RUN: --features=atomics,bulk-memory --initial-memory=131072 \
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# RUN: --max-memory=131072 -o %t_max.wasm %t32.o %t.hello32.o
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# RUN: obj2yaml %t_max.wasm | FileCheck %s -check-prefix=CHECK-SHARED
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# CHECK-SHARED: - Type: MEMORY
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# CHECK-SHARED-NEXT: Memories:
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# CHECK-SHARED-NEXT: - Flags: [ HAS_MAX, IS_SHARED ]
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# CHECK-SHARED-NEXT: Minimum: 0x2
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# CHECK-SHARED-NEXT: Maximum: 0x2
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# XUN: wasm-ld --relocatable -o %t_reloc.wasm %t32.o %t.hello32.o
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# XUN: obj2yaml %t_reloc.wasm | FileCheck %s -check-prefix=RELOC
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# RELOC: - Type: DATA
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# RELOC-NEXT: Relocations:
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# RELOC-NEXT: - Type: R_WASM_MEMORY_ADDR_I32
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# RELOC-NEXT: Index: 3
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# RELOC-NEXT: Offset: 0x24
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# RELOC-NEXT: - Type: R_WASM_MEMORY_ADDR_I32
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# RELOC-NEXT: Index: 4
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# RELOC-NEXT: Offset: 0x2D
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# RELOC-NEXT: Addend: 4
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# RELOC-NEXT: Segments:
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# RELOC-NEXT: - SectionOffset: 6
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 0
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# RELOC-NEXT: Content: 68656C6C6F0A00
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# RELOC-NEXT: - SectionOffset: 18
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 8
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# RELOC-NEXT: Content: '01000000'
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# RELOC-NEXT: - SectionOffset: 27
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 16
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# RELOC-NEXT: Content: '03000000'
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# RELOC-NEXT: - SectionOffset: 36
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 24
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# RELOC-NEXT: Content: '00000000'
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# RELOC-NEXT: - SectionOffset: 45
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 28
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# RELOC-NEXT: Content: '24000000'
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# RELOC-NEXT: - SectionOffset: 54
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# RELOC-NEXT: InitFlags: 0
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# RELOC-NEXT: Offset:
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# RELOC-NEXT: Opcode: I32_CONST
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# RELOC-NEXT: Value: 32
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# RELOC-NEXT: Content: '0000000000000000'
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# RELOC: SymbolTable:
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# RELOC-NEXT: - Index: 0
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# RELOC-NEXT: Kind: DATA
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# RELOC-NEXT: Name: foo
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# RELOC-NEXT: Flags: [ VISIBILITY_HIDDEN ]
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# RELOC-NEXT: Segment: 1
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# RELOC-NEXT: Size: 4
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# RELOC-NEXT: - Index: 1
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# RELOC-NEXT: Kind: DATA
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# RELOC-NEXT: Name: aligned_bar
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# RELOC-NEXT: Flags: [ VISIBILITY_HIDDEN ]
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# RELOC-NEXT: Segment: 2
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# RELOC-NEXT: Size: 4
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# RELOC-NEXT: - Index: 2
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# RELOC-NEXT: Kind: DATA
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# RELOC-NEXT: Name: external_ref
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# RELOC-NEXT: Flags: [ ]
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# RELOC-NEXT: Segment: 3
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# RELOC-NEXT: Size: 4
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# RELOC-NEXT: - Index: 3
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# RELOC-NEXT: Kind: DATA
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# RELOC-NEXT: Name: hello_str
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# RELOC-NEXT: Flags: [ ]
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# RELOC-NEXT: Segment: 0
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# RELOC-NEXT: Size: 7
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