diff options
Diffstat (limited to 'lld/test/COFF/wrap-dllimport.s')
| -rw-r--r-- | lld/test/COFF/wrap-dllimport.s | 34 |
1 files changed, 26 insertions, 8 deletions
diff --git a/lld/test/COFF/wrap-dllimport.s b/lld/test/COFF/wrap-dllimport.s index d7662b29fdc7..a26e43b69896 100644 --- a/lld/test/COFF/wrap-dllimport.s +++ b/lld/test/COFF/wrap-dllimport.s @@ -1,42 +1,60 @@ // REQUIRES: x86 // Check that we can wrap a dllimported symbol, so that references to -// __imp_<symbol> gets redirected to a defined local import instead. +// __imp_<symbol> gets redirected to a symbol that already exists or a defined +// local import instead. // RUN: split-file %s %t.dir // RUN: llvm-mc -filetype=obj -triple=i686-win32-gnu %t.dir/main.s -o %t.main.obj // RUN: llvm-mc -filetype=obj -triple=i686-win32-gnu %t.dir/other.s -o %t.other.obj -// RUN: lld-link -dll -out:%t.dll %t.other.obj -noentry -safeseh:no -export:foo -implib:%t.lib -// RUN: lld-link -out:%t.exe %t.main.obj %t.lib -entry:entry -subsystem:console -debug:symtab -safeseh:no -wrap:foo -lldmap:%t.map +// RUN: lld-link -dll -out:%t.dll %t.other.obj -noentry -safeseh:no -export:foo -export:bar -implib:%t.lib +// RUN: lld-link -out:%t.exe %t.main.obj %t.lib -entry:entry -subsystem:console -debug:symtab -safeseh:no -wrap:foo -wrap:bar -lldmap:%t.map // RUN: llvm-objdump -s -d --print-imm-hex %t.exe | FileCheck %s // CHECK: Contents of section .rdata: -// CHECK-NEXT: 402000 06104000 +// CHECK-NEXT: 402000 0c104000 // CHECK: Disassembly of section .text: // CHECK-EMPTY: // CHECK: 00401000 <_entry>: // CHECK-NEXT: 401000: ff 25 00 20 40 00 jmpl *0x402000 +// CHECK-NEXT: 401006: ff 25 00 00 00 00 jmpl *0x0 // CHECK-EMPTY: -// CHECK-NEXT: 00401006 <___wrap_foo>: -// CHECK-NEXT: 401006: c3 retl +// CHECK-NEXT: 0040100c <___wrap_foo>: +// CHECK-NEXT: 40100c: c3 retl +// CHECK-EMPTY: +// CHECK-NEXT: 0040100d <___wrap_bar>: +// CHECK-NEXT: 40100d: c3 retl -// The jmpl instruction in _entry points at an address in 0x402000, +// The first jmpl instruction in _entry points at an address in 0x402000, // which is the first 4 bytes of the .rdata section (above), which is a // pointer that points at ___wrap_foo. +// The second jmpl instruction in _entry points to null because the referenced +// symbol `__imp____wrap_bar` is declared as a weak reference to prevent pull a +// reference from an external DLL. + #--- main.s .global _entry _entry: jmpl *__imp__foo + jmpl *__imp__bar .global ___wrap_foo ___wrap_foo: ret +.weak __imp____wrap_bar +.global ___wrap_bar +___wrap_bar: + ret + #--- other.s .global _foo - _foo: ret + +.global _bar +_bar: + ret |