Book a Demo!
CoCalc Logo Icon
StoreFeaturesDocsShareSupportNewsAboutPoliciesSign UpSign In
freebsd
GitHub Repository: freebsd/freebsd-src
 Path: blob/main/contrib/llvm-project/compiler-rt/lib/xray/xray_trampoline_hexagon.S
35264 views
1
//===-- xray_trampoline_hexagon.s -------------------------------*- ASM -*-===//

2
//

3
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.

4
// See https://llvm.org/LICENSE.txt for license information.

5
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception

6
//

7
//===----------------------------------------------------------------------===//

8
//

9
// This file is a part of XRay, a dynamic runtime instrumentation system.

10
//

11
// This implements the hexagon-specific assembler for the trampolines.

12
//

13
//===----------------------------------------------------------------------===//

14


15
#include "../builtins/assembly.h"

16
#include "../sanitizer_common/sanitizer_asm.h"

17


18
.macro SAVE_REGISTERS

19
memw(sp+#0)=r0

20
memw(sp+#4)=r1

21
memw(sp+#8)=r2

22
memw(sp+#12)=r3

23
memw(sp+#16)=r4

24
.endm

25
.macro RESTORE_REGISTERS

26
r0=memw(sp+#0)

27
r1=memw(sp+#4)

28
r2=memw(sp+#8)

29
r3=memw(sp+#12)

30
r4=memw(sp+#16)

31
.endm

32


33
.macro CALL_PATCHED_FUNC entry_type

34
	// if (xray::XRayPatchedFunctionE != NULL)

35
	//     xray::XRayPatchedFunctionE(FuncType);

36


37
	r8 = #ASM_SYMBOL(_ZN6__xray19XRayPatchedFunctionE)

38


39
	// The patched sled puts the function type

40
	// into r6.  Move it into r0 to pass it to

41
	// the patched function.

42
	{ r0 = r6

43
          r1 = \entry_type

44
          p0 = !cmp.eq(r8, #0)

45
	  if (p0) callr r8 }

46
.endm

47


48
	.text

49
	.globl ASM_SYMBOL(__xray_FunctionEntry)

50
	ASM_HIDDEN(__xray_FunctionEntry)

51
	ASM_TYPE_FUNCTION(__xray_FunctionEntry)

52
# LLVM-MCA-BEGIN __xray_FunctionEntry

53
ASM_SYMBOL(__xray_FunctionEntry):

54
	CFI_STARTPROC

55
	SAVE_REGISTERS

56


57
	CALL_PATCHED_FUNC #0  // XRayEntryType::ENTRY

58
.Ltmp0:

59
	RESTORE_REGISTERS

60
	// return

61
# LLVM-MCA-END

62
	ASM_SIZE(__xray_FunctionEntry)

63
	CFI_ENDPROC

64


65


66
	.globl ASM_SYMBOL(__xray_FunctionExit)

67
	ASM_HIDDEN(__xray_FunctionExit)

68
	ASM_TYPE_FUNCTION(__xray_FunctionExit)

69
# LLVM-MCA-BEGIN __xray_FunctionExit

70
ASM_SYMBOL(__xray_FunctionExit):

71
	CFI_STARTPROC

72
	SAVE_REGISTERS

73


74
	CALL_PATCHED_FUNC #1  // XRayEntryType::EXIT

75
.Ltmp1:

76
	RESTORE_REGISTERS

77
	// return

78
	jumpr r31

79
# LLVM-MCA-END

80
	ASM_SIZE(__xray_FunctionExit)

81
	CFI_ENDPROC

82


83


84
	.globl ASM_SYMBOL(__xray_FunctionTailExit)

85
	ASM_HIDDEN(__xray_FunctionTailExit)

86
	ASM_TYPE_FUNCTION(__xray_FunctionTailExit)

87
# LLVM-MCA-BEGIN __xray_FunctionTailExit

88
ASM_SYMBOL(__xray_FunctionTailExit):

89
	CFI_STARTPROC

90
	SAVE_REGISTERS

91


92
	CALL_PATCHED_FUNC #2  // XRayEntryType::TAIL

93
.Ltmp2:

94
	RESTORE_REGISTERS

95
	// return

96
	jumpr r31

97
# LLVM-MCA-END

98
	ASM_SIZE(__xray_FunctionTailExit)

99
	CFI_ENDPROC

100


101