xref: /llvm-project/llvm/test/MC/COFF/weak.s (revision bd19876dc60c69f50a7110740e97c6878e56be60) 
1// This tests that default-null weak symbols (a GNU extension) are created
2// properly via the .weak directive.
3
4// RUN: llvm-mc -filetype=obj -triple i686-pc-win32 %s | llvm-readobj --symbols - | FileCheck %s
5// RUN: llvm-mc -filetype=obj -triple x86_64-pc-win32 %s | llvm-readobj --symbols - | FileCheck %s
6
7    .def    _main;
8    .scl    2;
9    .type   32;
10    .endef
11    .text
12    .globl  _main
13    .align  16, 0x90
14_main:                                  # @main
15# %bb.0:                                # %entry
16    subl    $4, %esp
17    movl    $_test_weak, %eax
18    testl   %eax, %eax
19    je      LBB0_2
20# %bb.1:                                # %if.then
21    call    _test_weak
22    movl    $1, %eax
23    addl    $4, %esp
24    ret
25LBB0_2:                                 # %return
26    xorl    %eax, %eax
27    addl    $4, %esp
28    ret
29
30    .weak   _test_weak
31
32    .weak   _test_weak_alias
33    _test_weak_alias=_main
34
35    .weak weakfunc
36    .globl weakfunc
37weakfunc:
38    ret
39
40// CHECK: Symbols [
41
42// CHECK:      Symbol {
43// CHECK:        Name: _main
44// CHECK-NEXT:   Value: 0
45// CHECK-NEXT:   Section: .text
46// CHECK-NEXT:   BaseType: Null
47// CHECK-NEXT:   ComplexType: Function
48// CHECK-NEXT:   StorageClass: External
49// CHECK-NEXT:   AuxSymbolCount: 0
50// CHECK-NEXT: }
51
52// CHECK:      Symbol {
53// CHECK:        Name:           _test_weak
54// CHECK-NEXT:   Value:          0
55// CHECK-NEXT:   Section:        IMAGE_SYM_UNDEFINED
56// CHECK-NEXT:   BaseType:       Null
57// CHECK-NEXT:   ComplexType:    Null
58// CHECK-NEXT:   StorageClass:   WeakExternal
59// CHECK-NEXT:   AuxSymbolCount: 1
60// CHECK-NEXT:   AuxWeakExternal {
61// CHECK-NEXT:     Linked: .weak._test_weak.default
62// CHECK-NEXT:      Search: Alias
63// CHECK-NEXT:   }
64// CHECK-NEXT: }
65
66// CHECK:      Symbol {
67// CHECK:        Name:                .weak._test_weak.default._main
68// CHECK-NEXT:   Value:               0
69// CHECK-NEXT:   Section:             IMAGE_SYM_ABSOLUTE
70// CHECK-NEXT:   BaseType:            Null
71// CHECK-NEXT:   ComplexType:         Null
72// CHECK-NEXT:   StorageClass:        External
73// CHECK-NEXT:   AuxSymbolCount:      0
74// CHECK-NEXT: }
75
76// CHECK:      Symbol {
77// CHECK:        Name:           _test_weak_alias
78// CHECK-NEXT:   Value:          0
79// CHECK-NEXT:   Section:        IMAGE_SYM_UNDEFINED
80// CHECK-NEXT:   BaseType:       Null
81// CHECK-NEXT:   ComplexType:    Null
82// CHECK-NEXT:   StorageClass:   WeakExternal
83// CHECK-NEXT:   AuxSymbolCount: 1
84// CHECK-NEXT:   AuxWeakExternal {
85// CHECK-NEXT:     Linked: _main
86// CHECK-NEXT:     Search: Alias
87// CHECK-NEXT:   }
88// CHECK-NEXT: }
89
90// CHECK:      Symbol {
91// CHECK:        Name:           weakfunc
92// CHECK-NEXT:   Value:          0
93// CHECK-NEXT:   Section:        IMAGE_SYM_UNDEFINED
94// CHECK-NEXT:   BaseType:       Null
95// CHECK-NEXT:   ComplexType:    Null
96// CHECK-NEXT:   StorageClass:   WeakExternal
97// CHECK-NEXT:   AuxSymbolCount: 1
98// CHECK-NEXT:   AuxWeakExternal {
99// CHECK-NEXT:     Linked: .weak.weakfunc.default
100// CHECK-NEXT:     Search: Alias
101// CHECK-NEXT:   }
102// CHECK-NEXT: }
103// CHECK:      Symbol {
104// CHECK:        Name:           .weak.weakfunc.default
105// CHECK-NOT:    Value:          0
106// CHECK-NOT:  Symbol {
107// CHECK:        Section:        .text
108// CHECK-NEXT:   BaseType:       Null
109// CHECK-NEXT:   ComplexType:    Null
110// CHECK-NEXT:   StorageClass:   External
111// CHECK-NEXT:   AuxSymbolCount: 0
112// CHECK-NEXT: }
113