134 lines
3.7 KiB
C++
134 lines
3.7 KiB
C++
//===--- ARMEHABI.h - ARM Exception Handling ABI ----------------*- C++ -*-===//
|
|
//
|
|
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
|
|
// See https://llvm.org/LICENSE.txt for license information.
|
|
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// This file defines the constants for the ARM unwind opcodes and exception
|
|
// handling table entry kinds.
|
|
//
|
|
// The enumerations and constants in this file reflect the ARM EHABI
|
|
// Specification as published by ARM.
|
|
//
|
|
// Exception Handling ABI for the ARM Architecture r2.09 - November 30, 2012
|
|
//
|
|
// http://infocenter.arm.com/help/topic/com.arm.doc.ihi0038a/IHI0038A_ehabi.pdf
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_SUPPORT_ARMEHABI_H
|
|
#define LLVM_SUPPORT_ARMEHABI_H
|
|
|
|
namespace llvm {
|
|
namespace ARM {
|
|
namespace EHABI {
|
|
/// ARM exception handling table entry kinds
|
|
enum EHTEntryKind {
|
|
EHT_GENERIC = 0x00,
|
|
EHT_COMPACT = 0x80
|
|
};
|
|
|
|
enum {
|
|
/// Special entry for the function never unwind
|
|
EXIDX_CANTUNWIND = 0x1
|
|
};
|
|
|
|
/// ARM-defined frame unwinding opcodes
|
|
enum UnwindOpcodes {
|
|
// Format: 00xxxxxx
|
|
// Purpose: vsp = vsp + ((x << 2) + 4)
|
|
UNWIND_OPCODE_INC_VSP = 0x00,
|
|
|
|
// Format: 01xxxxxx
|
|
// Purpose: vsp = vsp - ((x << 2) + 4)
|
|
UNWIND_OPCODE_DEC_VSP = 0x40,
|
|
|
|
// Format: 10000000 00000000
|
|
// Purpose: refuse to unwind
|
|
UNWIND_OPCODE_REFUSE = 0x8000,
|
|
|
|
// Format: 1000xxxx xxxxxxxx
|
|
// Purpose: pop r[15:12], r[11:4]
|
|
// Constraint: x != 0
|
|
UNWIND_OPCODE_POP_REG_MASK_R4 = 0x8000,
|
|
|
|
// Format: 1001xxxx
|
|
// Purpose: vsp = r[x]
|
|
// Constraint: x != 13 && x != 15
|
|
UNWIND_OPCODE_SET_VSP = 0x90,
|
|
|
|
// Format: 10100xxx
|
|
// Purpose: pop r[(4+x):4]
|
|
UNWIND_OPCODE_POP_REG_RANGE_R4 = 0xa0,
|
|
|
|
// Format: 10101xxx
|
|
// Purpose: pop r14, r[(4+x):4]
|
|
UNWIND_OPCODE_POP_REG_RANGE_R4_R14 = 0xa8,
|
|
|
|
// Format: 10110000
|
|
// Purpose: finish
|
|
UNWIND_OPCODE_FINISH = 0xb0,
|
|
|
|
// Format: 10110001 0000xxxx
|
|
// Purpose: pop r[3:0]
|
|
// Constraint: x != 0
|
|
UNWIND_OPCODE_POP_REG_MASK = 0xb100,
|
|
|
|
// Format: 10110010 x(uleb128)
|
|
// Purpose: vsp = vsp + ((x << 2) + 0x204)
|
|
UNWIND_OPCODE_INC_VSP_ULEB128 = 0xb2,
|
|
|
|
// Format: 10110011 xxxxyyyy
|
|
// Purpose: pop d[(x+y):x]
|
|
UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDX = 0xb300,
|
|
|
|
// Format: 10111xxx
|
|
// Purpose: pop d[(8+x):8]
|
|
UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDX_D8 = 0xb8,
|
|
|
|
// Format: 11000xxx
|
|
// Purpose: pop wR[(10+x):10]
|
|
UNWIND_OPCODE_POP_WIRELESS_MMX_REG_RANGE_WR10 = 0xc0,
|
|
|
|
// Format: 11000110 xxxxyyyy
|
|
// Purpose: pop wR[(x+y):x]
|
|
UNWIND_OPCODE_POP_WIRELESS_MMX_REG_RANGE = 0xc600,
|
|
|
|
// Format: 11000111 0000xxxx
|
|
// Purpose: pop wCGR[3:0]
|
|
// Constraint: x != 0
|
|
UNWIND_OPCODE_POP_WIRELESS_MMX_REG_MASK = 0xc700,
|
|
|
|
// Format: 11001000 xxxxyyyy
|
|
// Purpose: pop d[(16+x+y):(16+x)]
|
|
UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDD_D16 = 0xc800,
|
|
|
|
// Format: 11001001 xxxxyyyy
|
|
// Purpose: pop d[(x+y):x]
|
|
UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDD = 0xc900,
|
|
|
|
// Format: 11010xxx
|
|
// Purpose: pop d[(8+x):8]
|
|
UNWIND_OPCODE_POP_VFP_REG_RANGE_FSTMFDD_D8 = 0xd0
|
|
};
|
|
|
|
/// ARM-defined Personality Routine Index
|
|
enum PersonalityRoutineIndex {
|
|
// To make the exception handling table become more compact, ARM defined
|
|
// several personality routines in EHABI. There are 3 different
|
|
// personality routines in ARM EHABI currently. It is possible to have 16
|
|
// pre-defined personality routines at most.
|
|
AEABI_UNWIND_CPP_PR0 = 0,
|
|
AEABI_UNWIND_CPP_PR1 = 1,
|
|
AEABI_UNWIND_CPP_PR2 = 2,
|
|
|
|
NUM_PERSONALITY_INDEX
|
|
};
|
|
}
|
|
}
|
|
}
|
|
|
|
#endif
|