| # RUN: llvm-mc -filetype=obj -triple=wasm64-unknown-unknown -o %t.o %s |
| # RUN: wasm-ld -mwasm64 --experimental-pic -shared -o %t.wasm %t.o |
| # RUN: obj2yaml %t.wasm | FileCheck %s |
| # RUN: llvm-objdump --disassemble-symbols=__wasm_call_ctors,__wasm_apply_data_relocs --no-show-raw-insn --no-leading-addr %t.wasm | FileCheck %s --check-prefixes DIS |
| |
| .functype func_external () -> () |
| |
| # Linker-synthesized globals |
| .globaltype __stack_pointer, i64 |
| .globaltype __table_base, i64, immutable |
| .globaltype __memory_base, i64, immutable |
| |
| .section .data.data,"",@ |
| data: |
| .p2align 2 |
| .int32 2 |
| .size data, 4 |
| |
| .section .data.indirect_func_external,"",@ |
| indirect_func_external: |
| .int64 func_external |
| .size indirect_func_external, 8 |
| |
| .section .data.indirect_func,"",@ |
| indirect_func: |
| .int64 foo |
| .size indirect_func, 8 |
| |
| # Test data relocations |
| |
| .section .data.data_addr,"",@ |
| data_addr: |
| .int32 data |
| .size data_addr, 4 |
| |
| # .. against external symbols |
| |
| .section .data.data_addr_external,"",@ |
| data_addr_external: |
| .int64 data_external |
| .size data_addr_external, 8 |
| |
| # .. including addends |
| |
| .section .data.extern_struct_internal_ptr,"",@ |
| extern_struct_internal_ptr: |
| .int32 extern_struct + 4 |
| .size extern_struct_internal_ptr, 4 |
| |
| # Test use of __stack_pointer |
| |
| .section .text,"",@ |
| foo: |
| # %ptr = alloca i32 |
| # %0 = load i32, ptr @data, align 4 |
| # %1 = load ptr, ptr @indirect_func, align 4 |
| # call i32 %1() |
| # ret i32 %0 |
| .functype foo () -> (i32) |
| .local i64, i32 |
| global.get __stack_pointer |
| i64.const 16 |
| i64.sub |
| local.tee 0 |
| global.set __stack_pointer |
| global.get __memory_base |
| i64.const data@MBREL |
| i64.add |
| i32.load 0 |
| local.set 1 |
| global.get indirect_func@GOT |
| i64.load 0 |
| i32.wrap_i64 |
| call_indirect () -> (i32) |
| drop |
| local.get 0 |
| i64.const 16 |
| i64.add |
| global.set __stack_pointer |
| local.get 1 |
| end_function |
| |
| get_func_address: |
| .functype get_func_address () -> (i64) |
| global.get func_external@GOT |
| end_function |
| |
| get_data_address: |
| .functype get_data_address () -> (i64) |
| global.get data_external@GOT |
| end_function |
| |
| get_local_func_address: |
| # Verify that a function which is otherwise not address taken *is* added to |
| # the wasm table with referenced via R_WASM_TABLE_INDEX_REL_SLEB64 |
| .functype get_local_func_address () -> (i64) |
| global.get __table_base |
| i64.const get_func_address@TBREL |
| i64.add |
| end_function |
| |
| .globl foo |
| .globl data |
| .globl indirect_func |
| .globl indirect_func_external |
| .globl data_addr |
| .globl data_addr_external |
| .globl extern_struct_internal_ptr |
| .globl get_data_address |
| .globl get_func_address |
| .globl get_local_func_address |
| |
| .hidden foo |
| .hidden data |
| .hidden get_data_address |
| .hidden get_func_address |
| |
| # Without this linking will fail because we import __stack_pointer (a mutable |
| # global). |
| # TODO(sbc): We probably want a nicer way to specify target_features section |
| # in assembly. |
| .section .custom_section.target_features,"",@ |
| .int8 1 |
| .int8 43 |
| .int8 15 |
| .ascii "mutable-globals" |
| |
| # check for dylink section at start |
| |
| # CHECK: Sections: |
| # CHECK-NEXT: - Type: CUSTOM |
| # CHECK-NEXT: Name: dylink.0 |
| # CHECK-NEXT: MemorySize: 36 |
| # CHECK-NEXT: MemoryAlignment: 2 |
| # CHECK-NEXT: TableSize: 2 |
| # CHECK-NEXT: TableAlignment: 0 |
| # CHECK-NEXT: Needed: [] |
| # CHECK-NEXT: - Type: TYPE |
| |
| # check for import of __table_base and __memory_base globals |
| |
| # CHECK: - Type: IMPORT |
| # CHECK-NEXT: Imports: |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: memory |
| # CHECK-NEXT: Kind: MEMORY |
| # CHECK-NEXT: Memory: |
| # CHECK-NEXT: Flags: [ IS_64 ] |
| # CHECK-NEXT: Minimum: 0x1 |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: __indirect_function_table |
| # CHECK-NEXT: Kind: TABLE |
| # CHECK-NEXT: Table: |
| # CHECK-NEXT: Index: 0 |
| # CHECK-NEXT: ElemType: FUNCREF |
| # CHECK-NEXT: Limits: |
| # CHECK-NEXT: Minimum: 0x2 |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: __stack_pointer |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: true |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: __memory_base |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: false |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: __table_base |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: false |
| # CHECK-NEXT: - Module: env |
| # CHECK-NEXT: Field: __table_base32 |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I32 |
| # CHECK-NEXT: GlobalMutable: false |
| # CHECK-NEXT: - Module: GOT.mem |
| # CHECK-NEXT: Field: indirect_func |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: true |
| # CHECK-NEXT: - Module: GOT.func |
| # CHECK-NEXT: Field: func_external |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: true |
| # CHECK-NEXT: - Module: GOT.mem |
| # CHECK-NEXT: Field: data_external |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: true |
| # CHECK-NEXT: - Module: GOT.mem |
| # CHECK-NEXT: Field: extern_struct |
| # CHECK-NEXT: Kind: GLOBAL |
| # CHECK-NEXT: GlobalType: I64 |
| # CHECK-NEXT: GlobalMutable: true |
| # CHECK-NEXT: - Type: FUNCTION |
| |
| # CHECK: - Type: EXPORT |
| # CHECK-NEXT: Exports: |
| # CHECK-NEXT: - Name: __wasm_call_ctors |
| # CHECK-NEXT: Kind: FUNCTION |
| # CHECK-NEXT: Index: 0 |
| |
| # check for elem segment initialized with __table_base global as offset |
| |
| # CHECK: - Type: ELEM |
| # CHECK-NEXT: Segments: |
| # CHECK-NEXT: - Offset: |
| # CHECK-NEXT: Opcode: GLOBAL_GET |
| # CHECK-NEXT: Index: 3 |
| # CHECK-NEXT: Functions: [ 3, 2 ] |
| |
| # check the generated code in __wasm_call_ctors and __wasm_apply_data_relocs functions |
| |
| # DIS: <__wasm_call_ctors>: |
| # DIS-EMPTY: |
| # DIS-NEXT: end |
| |
| # DIS: <__wasm_apply_data_relocs>: |
| # DIS-EMPTY: |
| # DIS-NEXT: i64.const 4 |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: global.get 5 |
| # DIS-NEXT: i64.store 0:p2align=2 |
| # DIS-NEXT: i64.const 12 |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: global.get 2 |
| # DIS-NEXT: i64.const 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: i64.store 0:p2align=2 |
| # DIS-NEXT: i64.const 20 |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i32.const 0 |
| # DIS-NEXT: i32.add |
| # DIS-NEXT: i32.store 0 |
| # DIS-NEXT: i64.const 24 |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: global.get 6 |
| # DIS-NEXT: i64.store 0:p2align=2 |
| # DIS-NEXT: i64.const 32 |
| # DIS-NEXT: global.get 1 |
| # DIS-NEXT: i64.add |
| # DIS-NEXT: global.get 7 |
| # DIS-NEXT: i32.const 4 |
| # DIS-NEXT: i32.add |
| # DIS-NEXT: i32.store 0 |
| # DIS-NEXT: end |
| |
| # check the data segment initialized with __memory_base global as offset |
| |
| # CHECK: - Type: DATA |
| # CHECK-NEXT: Segments: |
| # CHECK-NEXT: - SectionOffset: 6 |
| # CHECK-NEXT: InitFlags: 0 |
| # CHECK-NEXT: Offset: |
| # CHECK-NEXT: Opcode: GLOBAL_GET |
| # CHECK-NEXT: Index: 1 |
| # CHECK-NEXT: Content: '020000000000000000000000010000000000000000000000000000000000000000000000' |
