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

[Eric Christopher via llvm-commits]

Would this be better off as a yaml2obj file as input? It would remove the
assembler checks and even the dyld checks.

Thoughts?

-eric

On Mon, May 11, 2020 at 12:40 PM Jez Ng via llvm-commits <
llvm-commits at lists.llvm.org> wrote:

>
> 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
>
>
>
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