1 //===-- EmulationStateARM.cpp -----------------------------------*- C++ -*-===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "EmulationStateARM.h"
12 #include "lldb/Core/RegisterValue.h"
13 #include "lldb/Core/Scalar.h"
14 #include "lldb/Interpreter/OptionValueArray.h"
15 #include "lldb/Interpreter/OptionValueDictionary.h"
16 #include "lldb/Target/StackFrame.h"
17 #include "lldb/Target/RegisterContext.h"
19 #include "Utility/ARM_DWARF_Registers.h"
22 using namespace lldb_private;
24 EmulationStateARM::EmulationStateARM () :
29 ClearPseudoRegisters();
32 EmulationStateARM::~EmulationStateARM ()
37 EmulationStateARM::LoadPseudoRegistersFromFrame (StackFrame &frame)
39 RegisterContext *reg_ctx = frame.GetRegisterContext().get();
43 for (int i = dwarf_r0; i < dwarf_r0 + 17; ++i)
45 reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindDWARF, i);
46 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoAtIndex (reg_num);
47 RegisterValue reg_value;
48 if (reg_ctx->ReadRegister (reg_info, reg_value))
50 m_gpr[i - dwarf_r0] = reg_value.GetAsUInt32();
56 for (int i = dwarf_d0; i < dwarf_d0 + 32; ++i)
58 reg_num = reg_ctx->ConvertRegisterKindToRegisterNumber (eRegisterKindDWARF, i);
59 RegisterValue reg_value;
60 const RegisterInfo *reg_info = reg_ctx->GetRegisterInfoAtIndex (reg_num);
62 if (reg_ctx->ReadRegister (reg_info, reg_value))
64 uint32_t idx = i - dwarf_d0;
66 m_vfp_regs.sd_regs[idx].d_reg = reg_value.GetAsUInt64();
68 m_vfp_regs.d_regs[idx - 16] = reg_value.GetAsUInt64();
78 EmulationStateARM::StorePseudoRegisterValue (uint32_t reg_num, uint64_t value)
80 if ((dwarf_r0 <= reg_num) && (reg_num <= dwarf_cpsr))
81 m_gpr[reg_num - dwarf_r0] = (uint32_t) value;
82 else if ((dwarf_s0 <= reg_num) && (reg_num <= dwarf_s31))
84 uint32_t idx = reg_num - dwarf_s0;
85 m_vfp_regs.sd_regs[idx / 2].s_reg[idx % 2] = (uint32_t) value;
87 else if ((dwarf_d0 <= reg_num) && (reg_num <= dwarf_d31))
89 if ((reg_num - dwarf_d0) < 16)
91 m_vfp_regs.sd_regs[reg_num - dwarf_d0].d_reg = value;
94 m_vfp_regs.d_regs[reg_num - dwarf_d16] = value;
103 EmulationStateARM::ReadPseudoRegisterValue (uint32_t reg_num, bool &success)
108 if ((dwarf_r0 <= reg_num) && (reg_num <= dwarf_cpsr))
109 value = m_gpr[reg_num - dwarf_r0];
110 else if ((dwarf_s0 <= reg_num) && (reg_num <= dwarf_s31))
112 uint32_t idx = reg_num - dwarf_s0;
113 value = m_vfp_regs.sd_regs[idx / 2].s_reg[idx % 2];
115 else if ((dwarf_d0 <= reg_num) && (reg_num <= dwarf_d31))
117 if ((reg_num - dwarf_d0) < 16)
118 value = m_vfp_regs.sd_regs[reg_num - dwarf_d0].d_reg;
120 value = m_vfp_regs.d_regs[reg_num - dwarf_d16];
129 EmulationStateARM::ClearPseudoRegisters ()
131 for (int i = 0; i < 17; ++i)
134 for (int i = 0; i < 16; ++i)
135 m_vfp_regs.sd_regs[i].d_reg = 0;
137 for (int i = 0; i < 16; ++i)
138 m_vfp_regs.d_regs[i] = 0;
142 EmulationStateARM::ClearPseudoMemory ()
148 EmulationStateARM::StoreToPseudoAddress (lldb::addr_t p_address, uint64_t value, uint32_t size)
154 m_memory[p_address] = value;
157 m_memory[p_address] = (value << 32) >> 32;
158 m_memory[p_address + 4] = value << 32;
164 EmulationStateARM::ReadFromPseudoAddress (lldb::addr_t p_address, uint32_t size, bool &success)
166 std::map<lldb::addr_t,uint32_t>::iterator pos;
167 uint32_t ret_val = 0;
170 pos = m_memory.find(p_address);
171 if (pos != m_memory.end())
172 ret_val = pos->second;
180 EmulationStateARM::ReadPseudoMemory (EmulateInstruction *instruction,
182 const EmulateInstruction::Context &context,
191 EmulationStateARM *pseudo_state = (EmulationStateARM *) baton;
194 uint32_t value = pseudo_state->ReadFromPseudoAddress (addr, length, success);
198 *((uint32_t *) dst) = value;
200 else if (length == 8)
202 uint32_t value1 = pseudo_state->ReadFromPseudoAddress (addr, 4, success);
206 uint32_t value2 = pseudo_state->ReadFromPseudoAddress (addr + 4, 4, success);
210 uint64_t value64 = value2;
211 value64 = (value64 << 32) | value1;
212 *((uint64_t *) dst) = value64;
224 EmulationStateARM::WritePseudoMemory (EmulateInstruction *instruction,
226 const EmulateInstruction::Context &context,
235 EmulationStateARM *pseudo_state = (EmulationStateARM *) baton;
236 uint64_t value = *((uint64_t *) dst);
237 success = pseudo_state->StoreToPseudoAddress (addr, value, length);
245 EmulationStateARM::ReadPseudoRegister (EmulateInstruction *instruction,
247 const lldb_private::RegisterInfo *reg_info,
248 lldb_private::RegisterValue ®_value)
250 if (!baton || !reg_info)
254 EmulationStateARM *pseudo_state = (EmulationStateARM *) baton;
255 const uint32_t dwarf_reg_num = reg_info->kinds[eRegisterKindDWARF];
256 assert (dwarf_reg_num != LLDB_INVALID_REGNUM);
257 uint64_t reg_uval = pseudo_state->ReadPseudoRegisterValue (dwarf_reg_num, success);
260 success = reg_value.SetUInt(reg_uval, reg_info->byte_size);
266 EmulationStateARM::WritePseudoRegister (EmulateInstruction *instruction,
268 const EmulateInstruction::Context &context,
269 const lldb_private::RegisterInfo *reg_info,
270 const lldb_private::RegisterValue ®_value)
272 if (!baton || !reg_info)
275 EmulationStateARM *pseudo_state = (EmulationStateARM *) baton;
276 const uint32_t dwarf_reg_num = reg_info->kinds[eRegisterKindDWARF];
277 assert (dwarf_reg_num != LLDB_INVALID_REGNUM);
278 return pseudo_state->StorePseudoRegisterValue (dwarf_reg_num, reg_value.GetAsUInt64());
282 EmulationStateARM::CompareState (EmulationStateARM &other_state)
286 for (int i = 0; match && i < 17; ++i)
288 if (m_gpr[i] != other_state.m_gpr[i])
292 for (int i = 0; match && i < 16; ++i)
294 if (m_vfp_regs.sd_regs[i].s_reg[0] != other_state.m_vfp_regs.sd_regs[i].s_reg[0])
297 if (m_vfp_regs.sd_regs[i].s_reg[1] != other_state.m_vfp_regs.sd_regs[i].s_reg[1])
301 for (int i = 0; match && i < 32; ++i)
305 if (m_vfp_regs.sd_regs[i].d_reg != other_state.m_vfp_regs.sd_regs[i].d_reg)
310 if (m_vfp_regs.d_regs[i - 16] != other_state.m_vfp_regs.d_regs[i - 16])
319 EmulationStateARM::LoadStateFromDictionary (OptionValueDictionary *test_data)
321 static ConstString memory_key ("memory");
322 static ConstString registers_key ("registers");
327 OptionValueSP value_sp = test_data->GetValueForKey (memory_key);
329 // Load memory, if present.
331 if (value_sp.get() != NULL)
333 static ConstString address_key ("address");
334 static ConstString data_key ("data");
335 uint64_t start_address = 0;
337 OptionValueDictionary *mem_dict = value_sp->GetAsDictionary();
338 value_sp = mem_dict->GetValueForKey (address_key);
339 if (value_sp.get() == NULL)
342 start_address = value_sp->GetUInt64Value ();
344 value_sp = mem_dict->GetValueForKey (data_key);
345 OptionValueArray *mem_array = value_sp->GetAsArray();
349 uint32_t num_elts = mem_array->GetSize();
350 uint32_t address = (uint32_t) start_address;
352 for (uint32_t i = 0; i < num_elts; ++i)
354 value_sp = mem_array->GetValueAtIndex (i);
355 if (value_sp.get() == NULL)
357 uint64_t value = value_sp->GetUInt64Value();
358 StoreToPseudoAddress (address, value, 4);
359 address = address + 4;
363 value_sp = test_data->GetValueForKey (registers_key);
364 if (value_sp.get() == NULL)
368 // Load General Registers
370 OptionValueDictionary *reg_dict = value_sp->GetAsDictionary ();
373 for (int i = 0; i < 16; ++i)
376 sstr.Printf ("r%d", i);
377 ConstString reg_name (sstr.GetData());
378 value_sp = reg_dict->GetValueForKey (reg_name);
379 if (value_sp.get() == NULL)
381 uint64_t reg_value = value_sp->GetUInt64Value();
382 StorePseudoRegisterValue (dwarf_r0 + i, reg_value);
385 static ConstString cpsr_name ("cpsr");
386 value_sp = reg_dict->GetValueForKey (cpsr_name);
387 if (value_sp.get() == NULL)
389 StorePseudoRegisterValue (dwarf_cpsr, value_sp->GetUInt64Value());
391 // Load s/d Registers
392 for (int i = 0; i < 32; ++i)
395 sstr.Printf ("s%d", i);
396 ConstString reg_name (sstr.GetData());
397 value_sp = reg_dict->GetValueForKey (reg_name);
398 if (value_sp.get() == NULL)
400 uint64_t reg_value = value_sp->GetUInt64Value();
401 StorePseudoRegisterValue (dwarf_s0 + i, reg_value);