[lld] 723c46e - [lld-macho] Re-add dylink-lazy test

[Jez Ng via llvm-commits]

Author: Jez Ng
Date: 2020-05-11T12:39:21-07:00
New Revision: 723c46e645dbe23942c926d2cb800ce020df6b8b

URL: https://github.com/llvm/llvm-project/commit/723c46e645dbe23942c926d2cb800ce020df6b8b
DIFF: https://github.com/llvm/llvm-project/commit/723c46e645dbe23942c926d2cb800ce020df6b8b.diff

LOG: [lld-macho] Re-add dylink-lazy test

The initial attempt didn't work on Windows; apparently Powershell has a
different syntax for running commands sequentially and concatenating
their outputs. So I've created two temporary files instead.

Differential Revision: https://reviews.llvm.org/D79697

Added: 
    lld/test/MachO/dylink-lazy.s

Modified: 
    

Removed: 
    


################################################################################
diff  --git a/lld/test/MachO/dylink-lazy.s b/lld/test/MachO/dylink-lazy.s
new file mode 100644
index 000000000000..c1d6275e20b4
--- /dev/null
+++ b/lld/test/MachO/dylink-lazy.s
@@ -0,0 +1,59 @@
+# REQUIRES: x86, shell
+# RUN: mkdir -p %t
+# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %p/Inputs/libhello.s \
+# RUN:   -o %t/libhello.o
+# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %p/Inputs/libgoodbye.s \
+# RUN:   -o %t/libgoodbye.o
+# RUN: lld -flavor darwinnew -dylib -install_name \
+# RUN:   @executable_path/libhello.dylib %t/libhello.o -o %t/libhello.dylib
+# RUN: lld -flavor darwinnew -dylib -install_name \
+# RUN:   @executable_path/libgoodbye.dylib %t/libgoodbye.o -o %t/libgoodbye.dylib
+
+# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %s -o %t/dylink-lazy.o
+# RUN: lld -flavor darwinnew -o %t/dylink-lazy -L%t -lhello -lgoodbye %t/dylink-lazy.o
+
+## When looking at the __stubs section alone, we are unable to easily tell which
+## symbol each entry points to. So we call objdump twice in order to get the
+## disassembly of __text and the bind tables first, which allow us to check for
+## matching entries in __stubs.
+# RUN: (llvm-objdump -d --no-show-raw-insn --syms --bind --lazy-bind %t/dylink-lazy; \
+# RUN:  llvm-objdump -D --no-show-raw-insn %t/dylink-lazy) | FileCheck %s
+
+# CHECK-LABEL: SYMBOL TABLE:
+# CHECK:       {{0*}}[[#%x, IMGLOADER:]] {{.*}} __DATA,__data __dyld_private
+
+# CHECK-LABEL: Disassembly of section __TEXT,__text:
+# CHECK:         callq 0x[[#%x, HELLO_STUB:]]
+# CHECK-NEXT:    callq 0x[[#%x, GOODBYE_STUB:]]
+
+# CHECK-LABEL: Bind table:
+# CHECK:       __DATA_CONST __got 0x[[#%x, BINDER:]] pointer 0 libSystem dyld_stub_binder
+
+# CHECK-LABEL: Lazy bind table:
+# CHECK-DAG:   __DATA __la_symbol_ptr 0x{{0*}}[[#%x, HELLO_LAZY_PTR:]] libhello _print_hello
+# CHECK-DAG:   __DATA __la_symbol_ptr 0x{{0*}}[[#%x, GOODBYE_LAZY_PTR:]] libgoodbye _print_goodbye
+
+# CHECK-LABEL: Disassembly of section __TEXT,__stubs:
+# CHECK-DAG:     [[#%x, HELLO_STUB]]:   jmpq *[[#%u, HELLO_LAZY_PTR - HELLO_STUB - 6]](%rip)
+# CHECK-DAG:     [[#%x, GOODBYE_STUB]]: jmpq *[[#%u, GOODBYE_LAZY_PTR - GOODBYE_STUB - 6]](%rip)
+
+# CHECK-LABEL: Disassembly of section __TEXT,__stub_helper:
+# CHECK:         {{0*}}[[#%x, STUB_HELPER_ENTRY:]] <__stub_helper>:
+# CHECK-NEXT:    leaq [[#%u, IMGLOADER - STUB_HELPER_ENTRY - 7]](%rip), %r11
+# CHECK-NEXT:    pushq %r11
+# CHECK-NEXT:    jmpq *[[#%u, BINDER_OFF:]](%rip)
+# CHECK-NEXT:    [[#%x, BINDER - BINDER_OFF]]: nop
+# CHECK-NEXT:    pushq $0
+# CHECK-NEXT:    jmp 0x[[#STUB_HELPER_ENTRY]]
+# CHECK-NEXT:    pushq $21
+# CHECK-NEXT:    jmp 0x[[#STUB_HELPER_ENTRY]]
+
+.text
+.globl _main
+
+_main:
+  sub $8, %rsp # 16-byte-align the stack; dyld checks for this
+  callq _print_hello
+  callq _print_goodbye
+  add $8, %rsp
+  ret