llvm-project/lld/test/COFF/wrap-dllimport.s

43 lines
1.3 KiB
ArmAsm

// REQUIRES: x86
// Check that we can wrap a dllimported symbol, so that references to
// __imp_<symbol> gets redirected to 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: llvm-objdump -s -d --print-imm-hex %t.exe | FileCheck %s
// CHECK: Contents of section .rdata:
// CHECK-NEXT: 402000 06104000
// CHECK: Disassembly of section .text:
// CHECK-EMPTY:
// CHECK: 00401000 <_entry>:
// CHECK-NEXT: 401000: ff 25 00 20 40 00 jmpl *0x402000
// CHECK-EMPTY:
// CHECK-NEXT: 00401006 <___wrap_foo>:
// CHECK-NEXT: 401006: c3 retl
// The 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.
#--- main.s
.global _entry
_entry:
jmpl *__imp__foo
.global ___wrap_foo
___wrap_foo:
ret
#--- other.s
.global _foo
_foo:
ret