lld/test/COFF/arm64ec-altnames.s

   1 REQUIRES: aarch64
   2 RUN: split-file %s %t.dir && cd %t.dir
   3
   4 RUN: llvm-mc -filetype=obj -triple=arm64ec-windows ext.s -o ext.obj
   5 RUN: llvm-mc -filetype=obj -triple=arm64ec-windows impl.s -o impl.obj
   6 RUN: llvm-mc -filetype=obj -triple=arm64ec-windows impl-cpp.s -o impl-cpp.obj
   7 RUN: llvm-mc -filetype=obj -triple=arm64ec-windows %S/Inputs/loadconfig-arm64ec.s -o loadconfig.obj
   8
   9 # Ensure -alternatename can change a mangled function symbol aliasing a defined symbol (typically a guest exit thunk).
  10
  11 RUN: lld-link -machine:arm64ec -dll -noentry -out:out1.dll ext.obj loadconfig.obj "-alternatename:#func=altsym"
  12
  13 RUN: llvm-objdump -d out1.dll | FileCheck --check-prefix=DISASM %s
  14 DISASM:      0000000180001000 <.text>:
  15 DISASM-NEXT: 180001000: 52800020     mov     w0, #0x1                // =1
  16 DISASM-NEXT: 180001004: d65f03c0     ret
  17 DISASM-NOT: .thnk
  18
  19 RUN: llvm-readobj --hex-dump=.test out1.dll | FileCheck --check-prefix=TESTSEC %s
  20 TESTSEC: 0x180005000 00100000 00100000
  21
  22 # Ensure -alternatename can change a demangled function symbol aliasing an anti-dependency symbol.
  23
  24 RUN: lld-link -machine:arm64ec -dll -noentry -out:out2.dll ext.obj loadconfig.obj -alternatename:func=altsym
  25
  26 RUN: llvm-objdump -d out2.dll | FileCheck --check-prefix=DISASM2 %s
  27 DISASM2:      Disassembly of section .text:
  28 DISASM2-EMPTY:
  29 DISASM2-NEXT: 0000000180001000 <.text>:
  30 DISASM2-NEXT: 180001000: 52800020     mov     w0, #0x1                // =1
  31 DISASM2-NEXT: 180001004: d65f03c0     ret
  32 DISASM2-EMPTY:
  33 DISASM2-NEXT: Disassembly of section .thnk:
  34 DISASM2-EMPTY:
  35 DISASM2-NEXT: 0000000180006000 <.thnk>:
  36 DISASM2-NEXT: 180006000: 52800040     mov     w0, #0x2                // =2
  37 DISASM2-NEXT: 180006004: d65f03c0     ret
  38
  39 RUN: llvm-readobj --hex-dump=.test out2.dll | FileCheck --check-prefix=TESTSEC2 %s
  40 TESTSEC2: 0x180005000 00100000 00600000
  41
  42 # Ensure -alternatename cannot modify a demangled function symbol aliasing a defined symbol.
  43
  44 RUN: lld-link -machine:arm64ec -dll -noentry -out:out3.dll impl.obj loadconfig.obj -alternatename:func=altsym
  45 RUN: llvm-objdump -d out3.dll | FileCheck --check-prefix=DISASM %s
  46 RUN: llvm-readobj --hex-dump=.test out3.dll | FileCheck --check-prefix=TESTSEC %s
  47
  48 RUN: lld-link -machine:arm64ec -dll -noentry -out:out4.dll impl-cpp.obj loadconfig.obj -alternatename:func=altsym
  49 RUN: llvm-objdump -d out4.dll | FileCheck --check-prefix=DISASM %s
  50 RUN: llvm-readobj --hex-dump=.test out4.dll | FileCheck --check-prefix=TESTSEC %s
  51
  52 #--- ext.s
  53         .weak_anti_dep func
  54 .set func, "#func"
  55         .weak_anti_dep "#func"
  56 .set "#func", thunksym
  57
  58         .section .test, "r"
  59         .rva func
  60         .rva "#func"
  61
  62         .section .thnk,"xr",discard,thunksym
  63 thunksym:
  64         mov w0, #2
  65         ret
  66
  67         .section .text,"xr",discard,altsym
  68         .globl altsym
  69 altsym:
  70         mov w0, #1
  71         ret
  72
  73 #--- impl.s
  74         .weak_anti_dep func
  75 .set func, "#func"
  76
  77         .section .test, "r"
  78         .rva func
  79         .rva "#func"
  80
  81         .section .text,"xr",discard,"#func"
  82 "#func":
  83         mov w0, #1
  84         ret
  85
  86         .section .text,"xr",discard,altsym
  87         .globl altsym
  88 altsym:
  89         mov w0, #2
  90         ret
  91
  92 #--- impl-cpp.s
  93         .weak_anti_dep func
  94 .set func, "?func@@$$hYAXXZ"
  95
  96         .section .test, "r"
  97         .rva func
  98         .rva "?func@@$$hYAXXZ"
  99
 100         .section .text,"xr",discard,"?func@@$$hYAXXZ"
 101 "?func@@$$hYAXXZ":
 102         mov w0, #1
 103         ret
 104
 105         .section .text,"xr",discard,altsym
 106         .globl altsym
 107 altsym:
 108         mov w0, #2
 109         ret