RegisterContextNetBSD_i386.cpp
2.87 KB
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
//===-- RegisterContextNetBSD_i386.cpp -------------------------*- 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
//
//===---------------------------------------------------------------------===//
#include "RegisterContextNetBSD_i386.h"
#include "RegisterContextPOSIX_x86.h"
using namespace lldb_private;
using namespace lldb;
// this needs to match 'struct reg'
struct GPR {
uint32_t eax;
uint32_t ecx;
uint32_t edx;
uint32_t ebx;
uint32_t esp;
uint32_t ebp;
uint32_t esi;
uint32_t edi;
uint32_t eip;
uint32_t eflags;
uint32_t cs;
uint32_t ss;
uint32_t ds;
uint32_t es;
uint32_t fs;
uint32_t gs;
};
struct FPR_i386 {
uint16_t fctrl; // FPU Control Word (fcw)
uint16_t fstat; // FPU Status Word (fsw)
uint16_t ftag; // FPU Tag Word (ftw)
uint16_t fop; // Last Instruction Opcode (fop)
union {
struct {
uint64_t fip; // Instruction Pointer
uint64_t fdp; // Data Pointer
} x86_64;
struct {
uint32_t fioff; // FPU IP Offset (fip)
uint32_t fiseg; // FPU IP Selector (fcs)
uint32_t fooff; // FPU Operand Pointer Offset (foo)
uint32_t foseg; // FPU Operand Pointer Selector (fos)
} i386_; // Added _ in the end to avoid error with gcc defining i386 in some
// cases
} ptr;
uint32_t mxcsr; // MXCSR Register State
uint32_t mxcsrmask; // MXCSR Mask
MMSReg stmm[8]; // 8*16 bytes for each FP-reg = 128 bytes
XMMReg xmm[8]; // 8*16 bytes for each XMM-reg = 128 bytes
uint32_t padding[56];
};
struct UserArea {
GPR gpr;
FPR_i386 i387;
uint32_t u_debugreg[8]; // Debug registers (DR0 - DR7).
uint32_t tlsbase;
};
#define DR_SIZE sizeof(((UserArea *)NULL)->u_debugreg[0])
#define DR_OFFSET(reg_index) \
(LLVM_EXTENSION offsetof(UserArea, u_debugreg[reg_index]))
// Include RegisterInfos_i386 to declare our g_register_infos_i386 structure.
#define DECLARE_REGISTER_INFOS_I386_STRUCT
#include "RegisterInfos_i386.h"
#undef DECLARE_REGISTER_INFOS_I386_STRUCT
RegisterContextNetBSD_i386::RegisterContextNetBSD_i386(
const ArchSpec &target_arch)
: RegisterInfoInterface(target_arch) {}
size_t RegisterContextNetBSD_i386::GetGPRSize() const { return sizeof(GPR); }
const RegisterInfo *RegisterContextNetBSD_i386::GetRegisterInfo() const {
switch (m_target_arch.GetMachine()) {
case llvm::Triple::x86:
case llvm::Triple::x86_64:
return g_register_infos_i386;
default:
assert(false && "Unhandled target architecture.");
return nullptr;
}
}
uint32_t RegisterContextNetBSD_i386::GetRegisterCount() const {
return static_cast<uint32_t>(sizeof(g_register_infos_i386) /
sizeof(g_register_infos_i386[0]));
}