| // This test checks that we emit unwind info correctly for epilogs that: |
| // 1. mirror the prolog; or |
| // 2. are subsequence at the end of the prolog; or |
| // 3. neither of above two. |
| // in the same segment. |
| // RUN: llvm-mc -triple aarch64-pc-win32 -filetype=obj %s -o %t.o |
| // RUN: llvm-readobj -S -r -u %t.o | FileCheck %s |
| |
| // CHECK: Section { |
| // CHECK: Number: 4 |
| // CHECK-NEXT: Name: .xdata (2E 78 64 61 74 61 00 00) |
| // CHECK-NEXT: VirtualSize: 0x0 |
| // CHECK-NEXT: VirtualAddress: 0x0 |
| // CHECK-NEXT: RawDataSize: 80 |
| // CHECK-NEXT: PointerToRawData: 0x1251AC |
| // CHECK-NEXT: PointerToRelocations: 0x0 |
| // CHECK-NEXT: PointerToLineNumbers: 0x0 |
| // CHECK-NEXT: RelocationCount: 0 |
| // CHECK-NEXT: LineNumberCount: 0 |
| // CHECK-NEXT: Characteristics [ (0x40300040) |
| // CHECK-NEXT: IMAGE_SCN_ALIGN_4BYTES (0x300000) |
| // CHECK-NEXT: IMAGE_SCN_CNT_INITIALIZED_DATA (0x40) |
| // CHECK-NEXT: IMAGE_SCN_MEM_READ (0x40000000) |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: Section { |
| // CHECK-NEXT: Number: 5 |
| // CHECK-NEXT: Name: .pdata (2E 70 64 61 74 61 00 00) |
| // CHECK-NEXT: VirtualSize: 0x0 |
| // CHECK-NEXT: VirtualAddress: 0x0 |
| // CHECK-NEXT: RawDataSize: 16 |
| // CHECK-NEXT: PointerToRawData: 0x1251FC |
| // CHECK-NEXT: PointerToRelocations: 0x12520C |
| // CHECK-NEXT: PointerToLineNumbers: 0x0 |
| // CHECK-NEXT: RelocationCount: 4 |
| // CHECK-NEXT: LineNumberCount: 0 |
| // CHECK-NEXT: Characteristics [ (0x40300040) |
| // CHECK-NEXT: IMAGE_SCN_ALIGN_4BYTES (0x300000) |
| // CHECK-NEXT: IMAGE_SCN_CNT_INITIALIZED_DATA (0x40) |
| // CHECK-NEXT: IMAGE_SCN_MEM_READ (0x40000000) |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT:] |
| // CHECK-LABEL:Relocations [ |
| // CHECK-NEXT: Section (1) .text { |
| // CHECK-NEXT: 0x94 IMAGE_REL_ARM64_BRANCH26 foo (12) |
| // CHECK-NEXT: 0x125068 IMAGE_REL_ARM64_BRANCH26 foo (12) |
| // CHECK-NEXT: } |
| // CHECK-NEXT: Section (5) .pdata { |
| // CHECK-NEXT: 0x0 IMAGE_REL_ARM64_ADDR32NB .text (0) |
| // CHECK-NEXT: 0x4 IMAGE_REL_ARM64_ADDR32NB .xdata (7) |
| // CHECK-NEXT: 0x8 IMAGE_REL_ARM64_ADDR32NB .text (0) |
| // CHECK-NEXT: 0xC IMAGE_REL_ARM64_ADDR32NB .xdata (7) |
| // CHECK-NEXT: } |
| // CHECK-NEXT:] |
| // CHECK-LABEL:UnwindInformation [ |
| // CHECK-NEXT: RuntimeFunction { |
| // CHECK-NEXT: Function: multi_epilog (0x0) |
| // CHECK-NEXT: ExceptionRecord: .xdata (0x0) |
| // CHECK-NEXT: ExceptionData { |
| // CHECK-NEXT: FunctionLength: 1048572 |
| // CHECK-NEXT: Version: 0 |
| // CHECK-NEXT: ExceptionData: No |
| // CHECK-NEXT: EpiloguePacked: No |
| // CHECK-NEXT: EpilogueScopes: 3 |
| // CHECK-NEXT: ByteCodeLength: 24 |
| // CHECK-NEXT: Prologue [ |
| // CHECK-NEXT: 0xe1 ; mov fp, sp |
| // CHECK-NEXT: 0xca16 ; stp x27, x28, [sp, #176] |
| // CHECK-NEXT: 0xc998 ; stp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; stp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; stp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; stp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; stp x29, x30, [sp, #-256]! |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: EpilogueScopes [ |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 38 |
| // CHECK-NEXT: EpilogueStartIndex: 0 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xe1 ; mov sp, fp |
| // CHECK-NEXT: 0xca16 ; ldp x27, x28, [sp, #176] |
| // CHECK-NEXT: 0xc998 ; ldp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 46 |
| // CHECK-NEXT: EpilogueStartIndex: 3 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xc998 ; ldp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 52 |
| // CHECK-NEXT: EpilogueStartIndex: 13 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xe1 ; mov sp, fp |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: } |
| // CHECK-NEXT: RuntimeFunction { |
| // CHECK-NEXT: Function: multi_epilog +0xFFFFC (0xFFFFC) |
| // CHECK-NEXT: ExceptionRecord: .xdata +0x28 (0x28) |
| // CHECK-NEXT: ExceptionData { |
| // CHECK-NEXT: FunctionLength: 151744 |
| // CHECK-NEXT: Version: 0 |
| // CHECK-NEXT: ExceptionData: No |
| // CHECK-NEXT: EpiloguePacked: No |
| // CHECK-NEXT: EpilogueScopes: 3 |
| // CHECK-NEXT: ByteCodeLength: 24 |
| // CHECK-NEXT: Prologue [ |
| // CHECK-NEXT: 0xe5 ; end_c |
| // CHECK-NEXT: 0xe1 ; mov fp, sp |
| // CHECK-NEXT: 0xca16 ; stp x27, x28, [sp, #176] |
| // CHECK-NEXT: 0xc998 ; stp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; stp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; stp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; stp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; stp x29, x30, [sp, #-256]! |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: EpilogueScopes [ |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 37916 |
| // CHECK-NEXT: EpilogueStartIndex: 1 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xe1 ; mov sp, fp |
| // CHECK-NEXT: 0xca16 ; ldp x27, x28, [sp, #176] |
| // CHECK-NEXT: 0xc998 ; ldp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 37924 |
| // CHECK-NEXT: EpilogueStartIndex: 4 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xc998 ; ldp x25, x26, [sp, #192] |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: EpilogueScope { |
| // CHECK-NEXT: StartOffset: 37930 |
| // CHECK-NEXT: EpilogueStartIndex: 14 |
| // CHECK-NEXT: Opcodes [ |
| // CHECK-NEXT: 0xe1 ; mov sp, fp |
| // CHECK-NEXT: 0xc91a ; ldp x23, x24, [sp, #208] |
| // CHECK-NEXT: 0xc89c ; ldp x21, x22, [sp, #224] |
| // CHECK-NEXT: 0xc81e ; ldp x19, x20, [sp, #240] |
| // CHECK-NEXT: 0x9f ; ldp x29, x30, [sp], #256 |
| // CHECK-NEXT: 0xe4 ; end |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: ] |
| // CHECK-NEXT: } |
| // CHECK-NEXT: } |
| // CHECK-NEXT:] |
| |
| .text |
| .global multi_epilog |
| .p2align 2 |
| .seh_proc multi_epilog |
| multi_epilog: |
| stp x29, lr, [sp, #-256]! |
| .seh_save_fplr_x 256 |
| stp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x25, x26, [sp, #192] |
| .seh_save_regp x25, 192 |
| stp x27, x28, [sp, #176] |
| .seh_save_regp x27, 176 |
| mov x29, fp |
| .seh_set_fp |
| .seh_endprologue |
| .rept 30 |
| nop |
| .endr |
| bl foo |
| // Epilogs 1, 2 and 3 are in the same segment as prolog. |
| // epilog1 - mirroring prolog |
| .seh_startepilogue |
| mov sp, x29 |
| .seh_set_fp |
| stp x27, x28, [sp, #176] |
| .seh_save_regp x27, 176 |
| stp x25, x26, [sp, #192] |
| .seh_save_regp x25, 192 |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| // epilog2 - a subsequence at the end of prolog, can use prolog's opcodes. |
| .seh_startepilogue |
| stp x25, x26, [sp, #192] |
| .seh_save_regp x25, 192 |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| // epilog3 - cannot use prolog's opcode. |
| .seh_startepilogue |
| mov sp, x29 |
| .seh_set_fp |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| .rept 300000 |
| nop |
| .endr |
| bl foo |
| // Epilogs below are in a segment without prolog |
| // epilog4 - mirroring prolog, its start index should be 1, counting the end_c. |
| .seh_startepilogue |
| mov sp, x29 |
| .seh_set_fp |
| stp x27, x28, [sp, #176] |
| .seh_save_regp x27, 176 |
| stp x25, x26, [sp, #192] |
| .seh_save_regp x25, 192 |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| // epilog5 - same as epilog2, its start index should be: 1 + epilog2's index. |
| .seh_startepilogue |
| stp x25, x26, [sp, #192] |
| .seh_save_regp x25, 192 |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| // epilog6 - same as epilog3, cannot use prolog's opcode. Again its start index |
| // should be: 1 + epilog3's index. |
| .seh_startepilogue |
| mov sp, x29 |
| .seh_set_fp |
| stp x23, x24, [sp, #208] |
| .seh_save_regp x23, 208 |
| stp x21, x22, [sp, #224] |
| .seh_save_regp x21, 224 |
| ldp x19, x20, [sp, #240] |
| .seh_save_regp x19, 240 |
| ldp x29, lr, [sp], #256 |
| .seh_save_fplr_x 256 |
| .seh_endepilogue |
| ret |
| .seh_endfunclet |
| .seh_endproc |
