You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
91 lines
3.1 KiB
91 lines
3.1 KiB
# Checks handling of undefined weak external functions. When the
|
|
# static linker decides they are undefined, check GOT relocations
|
|
# resolve to zero (i.e. a global that contains zero.).
|
|
#
|
|
# RUN: llvm-mc -filetype=obj -triple=wasm32-unknown-unknown -o %t.o %s
|
|
# RUN: wasm-ld %t.o -o %t1.wasm
|
|
# RUN: obj2yaml %t1.wasm | FileCheck %s
|
|
#
|
|
# With `--unresolved-symbols=ignore-all` the behaviour should be the same
|
|
# as the default.>
|
|
#
|
|
# RUN: wasm-ld --unresolved-symbols=ignore-all %t.o -o %t2.wasm
|
|
# RUN: obj2yaml %t2.wasm | FileCheck %s
|
|
|
|
.globl get_foo_addr
|
|
get_foo_addr:
|
|
.functype get_foo_addr () -> (i32)
|
|
global.get foo@GOT
|
|
end_function
|
|
|
|
.globl _start
|
|
_start:
|
|
.functype _start () -> ()
|
|
call get_foo_addr
|
|
end_function
|
|
|
|
.weak foo
|
|
.functype foo () -> (i32)
|
|
|
|
# Verify that we do not generate dynamic relocations for the GOT entry.
|
|
|
|
# CHECK-NOT: __wasm_apply_relocs
|
|
|
|
# Verify that we do not generate an import for foo
|
|
|
|
# CHECK-NOT: - Type: IMPORT
|
|
|
|
# CHECK: - Type: GLOBAL
|
|
# CHECK-NEXT: Globals:
|
|
# CHECK-NEXT: - Index: 0
|
|
# CHECK-NEXT: Type: I32
|
|
# CHECK-NEXT: Mutable: true
|
|
# CHECK-NEXT: InitExpr:
|
|
# CHECK-NEXT: Opcode: I32_CONST
|
|
# CHECK-NEXT: Value: 66560
|
|
# Global 'undefined_weak:foo' representing the GOT entry for foo
|
|
# Unlike other internal GOT entries that need to be mutable this one
|
|
# is immutable and not updated by `__wasm_apply_relocs`
|
|
# CHECK-NEXT: - Index: 1
|
|
# CHECK-NEXT: Type: I32
|
|
# CHECK-NEXT: Mutable: false
|
|
# CHECK-NEXT: InitExpr:
|
|
# CHECK-NEXT: Opcode: I32_CONST
|
|
# CHECK-NEXT: Value: 0
|
|
|
|
# CHECK: - Type: CUSTOM
|
|
# CHECK-NEXT: Name: name
|
|
# CHECK-NEXT: FunctionNames:
|
|
# CHECK-NEXT: - Index: 0
|
|
# CHECK-NEXT: Name: 'undefined_weak:foo'
|
|
# CHECK-NEXT: - Index: 1
|
|
# CHECK-NEXT: Name: get_foo_addr
|
|
# CHECK-NEXT: - Index: 2
|
|
# CHECK-NEXT: Name: _start
|
|
# CHECK-NEXT: GlobalNames:
|
|
# CHECK-NEXT: - Index: 0
|
|
# CHECK-NEXT: Name: __stack_pointer
|
|
# CHECK-NEXT: - Index: 1
|
|
# CHECK-NEXT: Name: 'undefined_weak:foo'
|
|
|
|
# With `-pie` or `-shared` the resolution should be deferred to the dynamic
|
|
# linker and the function address should be imported as GOT.func.foo.
|
|
#
|
|
# RUN: wasm-ld --experimental-pic -pie %t.o -o %t3.wasm
|
|
# RUN: obj2yaml %t3.wasm | FileCheck %s --check-prefix=IMPORT
|
|
|
|
# IMPORT: - Type: IMPORT
|
|
# IMPORT: - Module: GOT.func
|
|
# IMPORT-NEXT: Field: foo
|
|
# IMPORT-NEXT: Kind: GLOBAL
|
|
# IMPORT-NEXT: GlobalType: I32
|
|
# IMPORT-NEXT: GlobalMutable: true
|
|
|
|
# IMPORT: GlobalNames:
|
|
# IMPORT-NEXT: - Index: 0
|
|
# IMPORT-NEXT: Name: __memory_base
|
|
# IMPORT-NEXT: - Index: 1
|
|
# IMPORT-NEXT: Name: __table_base
|
|
# IMPORT-NEXT: - Index: 2
|
|
# IMPORT-NEXT: Name: foo
|