1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
|
// This test checks that the unwind data is dumped by llvm-objdump.
// RUN: llvm-mc -triple x86_64-pc-win32 -filetype=obj %s | llvm-objdump -u - | FileCheck %s
// CHECK: Unwind info:
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text
// CHECK-NEXT: End Address: .text + 0x001b
// CHECK-NEXT: Unwind Info Address: .xdata
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 1 UNW_ExceptionHandler
// CHECK-NEXT: Size of prolog: 18
// CHECK-NEXT: Number of Codes: 8
// CHECK-NEXT: Frame register: RBX
// CHECK-NEXT: Frame offset: 0
// CHECK-NEXT: Unwind Codes:
// CHECK-NEXT: 0x00: UOP_SetFPReg
// CHECK-NEXT: 0x0f: UOP_PushNonVol RBX
// CHECK-NEXT: 0x0e: UOP_SaveXMM128 XMM8 [0x0000]
// CHECK-NEXT: 0x09: UOP_SaveNonVol RSI [0x0010]
// CHECK-NEXT: 0x04: UOP_AllocSmall 24
// CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x0012
// CHECK-NEXT: End Address: .text + 0x0012
// CHECK-NEXT: Unwind Info Address: .xdata + 0x001c
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 4 UNW_ChainInfo
// CHECK-NEXT: Size of prolog: 0
// CHECK-NEXT: Number of Codes: 0
// CHECK-NEXT: No frame pointer used
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x001b
// CHECK-NEXT: End Address: .text + 0x001c
// CHECK-NEXT: Unwind Info Address: .xdata + 0x002c
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 0
// CHECK-NEXT: Size of prolog: 0
// CHECK-NEXT: Number of Codes: 0
// CHECK-NEXT: No frame pointer used
// CHECK: Function Table:
// CHECK-NEXT: Start Address: .text + 0x001c
// CHECK-NEXT: End Address: .text + 0x0039
// CHECK-NEXT: Unwind Info Address: .xdata + 0x0034
// CHECK-NEXT: Version: 1
// CHECK-NEXT: Flags: 0
// CHECK-NEXT: Size of prolog: 14
// CHECK-NEXT: Number of Codes: 6
// CHECK-NEXT: No frame pointer used
// CHECK-NEXT: Unwind Codes:
// CHECK-NEXT: 0x0e: UOP_AllocLarge 8454128
// CHECK-NEXT: 0x07: UOP_AllocLarge 8190
// CHECK-NEXT: 0x00: UOP_PushMachFrame w/o error code
.text
.globl func
.def func; .scl 2; .type 32; .endef
.seh_proc func
func:
.seh_pushframe @code
subq $24, %rsp
.seh_stackalloc 24
movq %rsi, 16(%rsp)
.seh_savereg %rsi, 16
movups %xmm8, (%rsp)
.seh_savexmm %xmm8, 0
pushq %rbx
.seh_pushreg 3
mov %rsp, %rbx
.seh_setframe 3, 0
.seh_endprologue
.seh_handler __C_specific_handler, @except
.seh_handlerdata
.long 0
.text
.seh_startchained
.seh_endprologue
.seh_endchained
lea (%rbx), %rsp
pop %rbx
addq $24, %rsp
ret
.seh_endproc
// Test emission of small functions.
.globl smallFunc
.def smallFunc; .scl 2; .type 32; .endef
.seh_proc smallFunc
smallFunc:
ret
.seh_endproc
// Function with big stack allocation.
.globl smallFunc
.def allocFunc; .scl 2; .type 32; .endef
.seh_proc smallFunc
allocFunc:
.seh_pushframe @code
subq $65520, %rsp
.seh_stackalloc 65520
sub $8454128, %rsp
.seh_stackalloc 8454128
.seh_endprologue
add $8454128, %rsp
addq $65520, %rsp
ret
.seh_endproc
|
