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