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https://github.com/RPCS3/llvm-mirror.git
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538b137e0b
This to protect against non-sensical instruction sequences being assembled, which would either cause asserts/crashes further down, or a Wasm module being output that doesn't validate. Unlike a validator, this type checker is able to give type-errors as part of the parsing process, which makes the assembler much friendlier to be used by humans writing manual input. Because the MC system is single pass (instructions aren't even stored in MC format, they are directly output) the type checker has to be single pass as well, which means that from now on .globaltype and .functype decls must come before their use. An extra pass is added to Codegen to collect information for this purpose, since AsmPrinter is normally single pass / streaming as well, and would otherwise generate this information on the fly. A `-no-type-check` flag was added to llvm-mc (and any other tools that take asm input) that surpresses type errors, as a quick escape hatch for tests that were not intended to be type correct. This is a first version of the type checker that ignores control flow, i.e. it checks that types are correct along the linear path, but not the branch path. This will still catch most errors. Branch checking could be added in the future. Differential Revision: https://reviews.llvm.org/D104945
221 lines
8.7 KiB
ArmAsm
221 lines
8.7 KiB
ArmAsm
# RUN: llvm-mc -triple=wasm32-unknown-unknown -filetype=obj < %s | obj2yaml | FileCheck %s
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# RUN: llvm-mc -triple=wasm32-unknown-unknown -mattr=+reference-types -filetype=obj < %s | obj2yaml | FileCheck --check-prefix=REF %s
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# Verify that @GOT relocation entryes result in R_WASM_GLOBAL_INDEX_LEB against
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# against the corrsponding function or data symbol and that the corresponding
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# data symbols are imported as a wasm globals.
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.functype default_func () -> (i32)
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.globaltype __memory_base, i32
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.globaltype __table_base, i32
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load_default_data:
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.functype load_default_data () -> (i32)
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global.get default_data@GOT
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i32.load 0
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end_function
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load_default_func:
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.functype load_default_func () -> (i32)
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global.get default_func@GOT
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i32.load 0
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end_function
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load_hidden_data:
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.functype load_hidden_data () -> (i32)
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global.get __memory_base
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i32.const .L.hidden_data@MBREL
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i32.add
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end_function
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load_hidden_func:
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.functype load_hidden_func () -> (i32)
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global.get __table_base
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i32.const hidden_func@TBREL
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i32.add
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end_function
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hidden_func:
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.functype hidden_func () -> (i32)
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i32.const 0
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end_function
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.section .rodata.hidden_data,"",@
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.L.hidden_data:
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.int8 100
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.size .L.hidden_data, 1
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#.hidden hidden_func
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#.hidden hidden_data
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.size default_data, 4
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# CHECK: --- !WASM
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# CHECK-NEXT: FileHeader:
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# CHECK-NEXT: Version: 0x1
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# CHECK-NEXT: Sections:
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# CHECK-NEXT: - Type: TYPE
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# CHECK-NEXT: Signatures:
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# CHECK-NEXT: - Index: 0
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# CHECK-NEXT: ParamTypes: []
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# CHECK-NEXT: ReturnTypes:
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# CHECK-NEXT: - I32
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# CHECK-NEXT: - Type: IMPORT
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# CHECK-NEXT: Imports:
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# CHECK-NEXT: - Module: env
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# CHECK-NEXT: Field: __linear_memory
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# CHECK-NEXT: Kind: MEMORY
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# CHECK-NEXT: Memory:
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# CHECK-NEXT: Minimum: 0x1
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# CHECK-NEXT: - Module: env
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# CHECK-NEXT: Field: default_func
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: SigIndex: 0
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# CHECK-NEXT: - Module: env
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# CHECK-NEXT: Field: __memory_base
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: GlobalType: I32
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# CHECK-NEXT: GlobalMutable: true
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# CHECK-NEXT: - Module: env
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# CHECK-NEXT: Field: __table_base
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: GlobalType: I32
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# CHECK-NEXT: GlobalMutable: true
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# CHECK-NEXT: - Module: env
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# CHECK-NEXT: Field: __indirect_function_table
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# CHECK-NEXT: Kind: TABLE
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# CHECK-NEXT: Table:
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# CHECK-NEXT: Index: 0
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# CHECK-NEXT: ElemType: FUNCREF
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# CHECK-NEXT: Limits:
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# CHECK-NEXT: Minimum: 0x1
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# CHECK-NEXT: - Module: GOT.mem
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# CHECK-NEXT: Field: default_data
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: GlobalType: I32
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# CHECK-NEXT: GlobalMutable: true
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# CHECK-NEXT: - Module: GOT.func
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# CHECK-NEXT: Field: default_func
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: GlobalType: I32
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# CHECK-NEXT: GlobalMutable: true
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# CHECK-NEXT: - Type: FUNCTION
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# CHECK-NEXT: FunctionTypes: [ 0, 0, 0, 0, 0 ]
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# CHECK-NEXT: - Type: ELEM
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# CHECK-NEXT: Segments:
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# CHECK-NEXT: Offset:
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# CHECK-NEXT: Opcode: I32_CONST
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# CHECK-NEXT: Value: 1
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# CHECK-NEXT: Functions: [ 5 ]
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# CHECK-NEXT: - Type: DATACOUNT
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# CHECK-NEXT: Count: 1
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# CHECK-NEXT: - Type: CODE
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# CHECK-NEXT: Relocations:
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# CHECK-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
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# CHECK-NEXT: Index: 1
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# CHECK-NEXT: Offset: 0x4
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# CHECK-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
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# CHECK-NEXT: Index: 3
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# CHECK-NEXT: Offset: 0x10
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# CHECK-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
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# CHECK-NEXT: Index: 5
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# CHECK-NEXT: Offset: 0x1C
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# CHECK-NEXT: - Type: R_WASM_MEMORY_ADDR_REL_SLEB
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# CHECK-NEXT: Index: 6
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# CHECK-NEXT: Offset: 0x22
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# CHECK-NEXT: - Type: R_WASM_GLOBAL_INDEX_LEB
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# CHECK-NEXT: Index: 8
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# CHECK-NEXT: Offset: 0x2C
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# CHECK-NEXT: - Type: R_WASM_TABLE_INDEX_REL_SLEB
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# CHECK-NEXT: Index: 9
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# CHECK-NEXT: Offset: 0x32
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# CHECK-NEXT: Functions:
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# CHECK-NEXT: - Index: 1
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# CHECK-NEXT: Locals: []
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# CHECK-NEXT: Body: 2382808080002802000B
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# CHECK-NEXT: - Index: 2
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# CHECK-NEXT: Locals: []
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# CHECK-NEXT: Body: 2383808080002802000B
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# CHECK-NEXT: - Index: 3
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# CHECK-NEXT: Locals: []
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# CHECK-NEXT: Body: 2380808080004180808080006A0B
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# CHECK-NEXT: - Index: 4
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# CHECK-NEXT: Locals: []
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# CHECK-NEXT: Body: 2381808080004180808080006A0B
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# CHECK-NEXT: - Index: 5
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# CHECK-NEXT: Locals: []
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# CHECK-NEXT: Body: 41000B
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# CHECK-NEXT: - Type: DATA
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# CHECK-NEXT: Segments:
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# CHECK-NEXT: - SectionOffset: 6
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# CHECK-NEXT: InitFlags: 0
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# CHECK-NEXT: Offset:
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# CHECK-NEXT: Opcode: I32_CONST
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# CHECK-NEXT: Value: 0
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# CHECK-NEXT: Content: '64'
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# CHECK-NEXT: - Type: CUSTOM
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# CHECK-NEXT: Name: linking
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# CHECK-NEXT: Version: 2
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# CHECK-NEXT: SymbolTable:
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# CHECK-NEXT: - Index: 0
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: load_default_data
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Function: 1
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# CHECK-NEXT: - Index: 1
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# CHECK-NEXT: Kind: DATA
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# CHECK-NEXT: Name: default_data
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# CHECK-NEXT: Flags: [ UNDEFINED ]
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# CHECK-NEXT: - Index: 2
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: load_default_func
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Function: 2
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# CHECK-NEXT: - Index: 3
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: default_func
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# CHECK-NEXT: Flags: [ UNDEFINED ]
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# CHECK-NEXT: Function: 0
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# CHECK-NEXT: - Index: 4
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: load_hidden_data
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Function: 3
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# CHECK-NEXT: - Index: 5
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: Name: __memory_base
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# CHECK-NEXT: Flags: [ UNDEFINED ]
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# CHECK-NEXT: Global: 0
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# CHECK-NEXT: - Index: 6
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# CHECK-NEXT: Kind: DATA
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# CHECK-NEXT: Name: .L.hidden_data
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Segment: 0
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# CHECK-NEXT: Size: 1
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# CHECK-NEXT: - Index: 7
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: load_hidden_func
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Function: 4
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# CHECK-NEXT: - Index: 8
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# CHECK-NEXT: Kind: GLOBAL
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# CHECK-NEXT: Name: __table_base
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# CHECK-NEXT: Flags: [ UNDEFINED ]
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# CHECK-NEXT: Global: 1
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# CHECK-NEXT: - Index: 9
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# CHECK-NEXT: Kind: FUNCTION
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# CHECK-NEXT: Name: hidden_func
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# CHECK-NEXT: Flags: [ BINDING_LOCAL ]
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# CHECK-NEXT: Function: 5
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# REF: - Index: 10
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# REF-NEXT: Kind: TABLE
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# REF-NEXT: Name: __indirect_function_table
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# REF-NEXT: Flags: [ UNDEFINED, NO_STRIP ]
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# REF-NEXT: Table: 0
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# CHECK-NEXT: SegmentInfo:
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# CHECK-NEXT: - Index: 0
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# CHECK-NEXT: Name: .rodata.hidden_data
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# CHECK-NEXT: Alignment: 0
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# CHECK-NEXT: Flags: [ ]
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# CHECK-NEXT: ...
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