d0e40ff705
This PR adds support for parsing the data symbols from the WebAssembly name section, which consists of a name and address range for the segments in the Wasm data section. Unlike other object file formats, Wasm has no symbols for referencing items within those segments (i.e. symbols the user has defined).
255 lines
7.3 KiB
YAML
255 lines
7.3 KiB
YAML
# clang -target wasm32 -nostdlib -Wl,--no-entry -Wl,--export-all -O0 -g -o simple.wasm simple.c
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# char* str = "data str";
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#
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# int add(int a, int b) {
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# return a + b;
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# }
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#
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# int main() {
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# int i = 1;
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# int j = 2;
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# return add(i, j);
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# }
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--- !WASM
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FileHeader:
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Version: 0x1
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Sections:
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- Type: TYPE
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Signatures:
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- Index: 0
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ParamTypes: []
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ReturnTypes: []
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- Index: 1
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ParamTypes:
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- I32
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- I32
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ReturnTypes:
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- I32
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- Index: 2
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ParamTypes: []
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ReturnTypes:
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- I32
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- Type: FUNCTION
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FunctionTypes: [ 0, 1, 2, 1 ]
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- Type: TABLE
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Tables:
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- Index: 0
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ElemType: FUNCREF
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Limits:
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Flags: [ HAS_MAX ]
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Minimum: 0x1
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Maximum: 0x1
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- Type: MEMORY
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Memories:
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- Minimum: 0x2
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- Type: GLOBAL
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Globals:
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- Index: 0
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Type: I32
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Mutable: true
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InitExpr:
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Opcode: I32_CONST
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Value: 66576
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- Index: 1
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1036
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- Index: 2
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1024
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- Index: 3
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1040
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- Index: 4
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1040
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- Index: 5
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 66576
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- Index: 6
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1024
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- Index: 7
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 66576
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- Index: 8
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 131072
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- Index: 9
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 0
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- Index: 10
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 1
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- Index: 11
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Type: I32
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Mutable: false
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InitExpr:
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Opcode: I32_CONST
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Value: 65536
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- Type: EXPORT
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Exports:
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- Name: memory
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Kind: MEMORY
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Index: 0
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- Name: __wasm_call_ctors
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Kind: FUNCTION
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Index: 0
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- Name: add
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Kind: FUNCTION
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Index: 1
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- Name: __original_main
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Kind: FUNCTION
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Index: 2
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- Name: main
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Kind: FUNCTION
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Index: 3
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- Name: str
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Kind: GLOBAL
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Index: 1
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- Name: __main_void
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Kind: FUNCTION
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Index: 2
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- Name: __indirect_function_table
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Kind: TABLE
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Index: 0
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- Name: __dso_handle
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Kind: GLOBAL
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Index: 2
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- Name: __data_end
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Kind: GLOBAL
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Index: 3
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- Name: __stack_low
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Kind: GLOBAL
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Index: 4
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- Name: __stack_high
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Kind: GLOBAL
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Index: 5
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- Name: __global_base
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Kind: GLOBAL
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Index: 6
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- Name: __heap_base
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Kind: GLOBAL
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Index: 7
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- Name: __heap_end
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Kind: GLOBAL
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Index: 8
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- Name: __memory_base
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Kind: GLOBAL
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Index: 9
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- Name: __table_base
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Kind: GLOBAL
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Index: 10
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- Name: __wasm_first_page_end
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Kind: GLOBAL
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Index: 11
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- Type: CODE
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Functions:
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- Index: 0
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Locals: []
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Body: 0B
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- Index: 1
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Locals:
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- Type: I32
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Count: 1
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Body: 23808080800041106B21022002200036020C20022001360208200228020C20022802086A0F0B
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- Index: 2
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Locals:
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- Type: I32
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Count: 2
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Body: 23808080800041106B210020002480808080002000410036020C2000410136020820004102360204200028020820002802041081808080002101200041106A24808080800020010F0B
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- Index: 3
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Locals: []
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Body: 1082808080000F0B
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- Type: DATA
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Segments:
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- SectionOffset: 7
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InitFlags: 0
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Offset:
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Opcode: I32_CONST
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Value: 1024
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Content: '646174612073747200'
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- SectionOffset: 22
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InitFlags: 0
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Offset:
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Opcode: I32_CONST
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Value: 1036
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Content: '00040000'
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- Type: CUSTOM
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Name: name
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FunctionNames:
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- Index: 0
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Name: __wasm_call_ctors
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- Index: 1
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Name: add
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- Index: 2
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Name: __original_main
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- Index: 3
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Name: main
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GlobalNames:
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- Index: 0
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Name: __stack_pointer
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DataSegmentNames:
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- Index: 0
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Name: .rodata
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- Index: 1
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Name: .data
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- Type: CUSTOM
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HeaderSecSizeEncodingLen: 2
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Name: producers
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Languages:
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- Name: C11
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Version: ''
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Tools:
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- Name: clang
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Version: '22.0.0git'
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- Type: CUSTOM
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Name: target_features
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Features:
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- Prefix: USED
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Name: bulk-memory
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- Prefix: USED
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Name: bulk-memory-opt
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- Prefix: USED
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Name: call-indirect-overlong
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- Prefix: USED
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Name: multivalue
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- Prefix: USED
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Name: mutable-globals
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- Prefix: USED
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Name: nontrapping-fptoint
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- Prefix: USED
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Name: reference-types
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- Prefix: USED
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Name: sign-ext
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...
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