intel/llvm
1
0
Fork 0
mirror of https://github.com/intel/llvm.git synced 2026-01-19 09:31:59 +08:00
Code Issues Packages Projects Releases Wiki Activity

Changed the emulate instruction function to take emulate options which

Browse Source 
are defined as enumerations. Current bits include:

        eEmulateInstructionOptionAutoAdvancePC
        eEmulateInstructionOptionIgnoreConditions

Modified the EmulateInstruction class to have a few more pure virtuals that
can help clients understand how many instructions the emulator can handle:

        virtual bool
        SupportsEmulatingIntructionsOfType (InstructionType inst_type) = 0;


Where instruction types are defined as:

//------------------------------------------------------------------
/// Instruction types
//------------------------------------------------------------------    
typedef enum InstructionType
{
    eInstructionTypeAny,                // Support for any instructions at all (at least one)
    eInstructionTypePrologueEpilogue,   // All prologue and epilogue instructons that push and pop register values and modify sp/fp
    eInstructionTypePCModifying,        // Any instruction that modifies the program counter/instruction pointer
    eInstructionTypeAll                 // All instructions of any kind

}  InstructionType;


This allows use to tell what an emulator can do and also allows us to request
these abilities when we are finding the plug-in interface.

Added the ability for an EmulateInstruction class to get the register names
for any registers that are part of the emulation. This helps with being able
to dump and log effectively.

The UnwindAssembly class now stores the architecture it was created with in
case it is needed later in the unwinding process.

Added a function that can tell us DWARF register names for ARM that goes
along with the source/Utility/ARM_DWARF_Registers.h file: 

        source/Utility/ARM_DWARF_Registers.c
        
Took some of plug-ins out of the lldb_private namespace.

llvm-svn: 130189
This commit is contained in:
Greg Clayton
2011-04-26 04:39:08 +00:00
parent 80cb3cb1d6
commit 2ed751bd47
31 changed files with 965 additions and 435 deletions
Download Patch File Download Diff File Expand all files Collapse all files

182
lldb/source/Core/EmulateInstruction.cpp
View File

@@ -9,6 +9,7 @@
#include "lldb/Core/EmulateInstruction.h"
#include "lldb/Core/Address.h"
#include "lldb/Core/DataBufferHeap.h"
#include "lldb/Core/DataExtractor.h"
#include "lldb/Core/Error.h"
@@ -17,6 +18,7 @@
#include "lldb/Host/Endian.h"
#include "lldb/Target/Process.h"
#include "lldb/Target/RegisterContext.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "Plugins/Instruction/ARM/EmulateInstructionARM.h"
@@ -25,7 +27,7 @@ using namespace lldb;
using namespace lldb_private;
EmulateInstruction*
EmulateInstruction::FindPlugin (const ArchSpec &arch, const char *plugin_name)
EmulateInstruction::FindPlugin (const ArchSpec &arch, InstructionType supported_inst_type, const char *plugin_name)
{
EmulateInstructionCreateInstance create_callback = NULL;
if (plugin_name)
@@ -33,7 +35,7 @@ EmulateInstruction::FindPlugin (const ArchSpec &arch, const char *plugin_name)
create_callback = PluginManager::GetEmulateInstructionCreateCallbackForPluginName (plugin_name);
if (create_callback)
{
EmulateInstruction *emulate_insn_ptr = create_callback(arch);
EmulateInstruction *emulate_insn_ptr = create_callback(arch, supported_inst_type);
if (emulate_insn_ptr)
return emulate_insn_ptr;
}
@@ -42,7 +44,7 @@ EmulateInstruction::FindPlugin (const ArchSpec &arch, const char *plugin_name)
{
for (uint32_t idx = 0; (create_callback = PluginManager::GetEmulateInstructionCreateCallbackAtIndex(idx)) != NULL; ++idx)
{
EmulateInstruction *emulate_insn_ptr = create_callback(arch);
EmulateInstruction *emulate_insn_ptr = create_callback(arch, supported_inst_type);
if (emulate_insn_ptr)
return emulate_insn_ptr;
}
@@ -50,47 +52,14 @@ EmulateInstruction::FindPlugin (const ArchSpec &arch, const char *plugin_name)
return NULL;
}
EmulateInstruction::EmulateInstruction
(
lldb::ByteOrder byte_order,
uint32_t addr_byte_size,
const ArchSpec &arch,
void *baton,
ReadMemory read_mem_callback,
WriteMemory write_mem_callback,
ReadRegister read_reg_callback,
WriteRegister write_reg_callback
) :
m_byte_order (endian::InlHostByteOrder()),
m_addr_byte_size (addr_byte_size),
m_arch (arch),
m_baton (baton),
m_read_mem_callback (read_mem_callback),
m_write_mem_callback (write_mem_callback),
m_read_reg_callback (read_reg_callback),
m_write_reg_callback (write_reg_callback),
m_opcode_pc (LLDB_INVALID_ADDRESS),
m_opcode (),
m_advance_pc (false)
{
}
EmulateInstruction::EmulateInstruction
(
lldb::ByteOrder byte_order,
uint32_t addr_byte_size,
const ArchSpec &arch
) :
m_byte_order (endian::InlHostByteOrder()),
m_addr_byte_size (addr_byte_size),
EmulateInstruction::EmulateInstruction (const ArchSpec &arch) :
m_arch (arch),
m_baton (NULL),
m_read_mem_callback (&ReadMemoryDefault),
m_write_mem_callback (&WriteMemoryDefault),
m_read_reg_callback (&ReadRegisterDefault),
m_write_reg_callback (&WriteRegisterDefault),
m_opcode_pc (LLDB_INVALID_ADDRESS),
m_advance_pc (false)
m_opcode_pc (LLDB_INVALID_ADDRESS)
{
::memset (&m_opcode, 0, sizeof (m_opcode));
}
@@ -99,7 +68,7 @@ uint64_t
EmulateInstruction::ReadRegisterUnsigned (uint32_t reg_kind, uint32_t reg_num, uint64_t fail_value, bool *success_ptr)
{
uint64_t uval64 = 0;
bool success = m_read_reg_callback (m_baton, reg_kind, reg_num, uval64);
bool success = m_read_reg_callback (this, m_baton, reg_kind, reg_num, uval64);
if (success_ptr)
*success_ptr = success;
if (!success)
@@ -110,7 +79,7 @@ EmulateInstruction::ReadRegisterUnsigned (uint32_t reg_kind, uint32_t reg_num, u
bool
EmulateInstruction::WriteRegisterUnsigned (const Context &context, uint32_t reg_kind, uint32_t reg_num, uint64_t reg_value)
{
return m_write_reg_callback (m_baton, context, reg_kind, reg_num, reg_value);
return m_write_reg_callback (this, m_baton, context, reg_kind, reg_num, reg_value);
}
uint64_t
@@ -121,11 +90,11 @@ EmulateInstruction::ReadMemoryUnsigned (const Context &context, lldb::addr_t add
if (byte_size <= 8)
{
uint8_t buf[sizeof(uint64_t)];
size_t bytes_read = m_read_mem_callback (m_baton, context, addr, buf, byte_size);
size_t bytes_read = m_read_mem_callback (this, m_baton, context, addr, buf, byte_size);
if (bytes_read == byte_size)
{
uint32_t offset = 0;
DataExtractor data (buf, byte_size, m_byte_order, m_addr_byte_size);
DataExtractor data (buf, byte_size, GetByteOrder(), GetAddressByteSize());
uval64 = data.GetMaxU64 (&offset, byte_size);
success = true;
}
@@ -149,7 +118,7 @@ EmulateInstruction::WriteMemoryUnsigned (const Context &context,
StreamString strm(Stream::eBinary, GetAddressByteSize(), GetByteOrder());
strm.PutMaxHex64 (uval, uval_byte_size);
size_t bytes_written = m_write_mem_callback (m_baton, context, addr, strm.GetData(), uval_byte_size);
size_t bytes_written = m_write_mem_callback (this, m_baton, context, addr, strm.GetData(), uval_byte_size);
if (bytes_written == uval_byte_size)
return true;
return false;
@@ -208,7 +177,8 @@ EmulateInstruction::SetWriteRegCallback (WriteRegister write_reg_callback)
//
size_t
EmulateInstruction::ReadMemoryFrame (void *baton,
EmulateInstruction::ReadMemoryFrame (EmulateInstruction *instruction,
void *baton,
const Context &context,
lldb::addr_t addr,
void *dst,
@@ -233,7 +203,8 @@ EmulateInstruction::ReadMemoryFrame (void *baton,
}
size_t
EmulateInstruction::WriteMemoryFrame (void *baton,
EmulateInstruction::WriteMemoryFrame (EmulateInstruction *instruction,
void *baton,
const Context &context,
lldb::addr_t addr,
const void *dst,
@@ -262,7 +233,8 @@ EmulateInstruction::WriteMemoryFrame (void *baton,
}
bool
EmulateInstruction::ReadRegisterFrame (void *baton,
EmulateInstruction::ReadRegisterFrame (EmulateInstruction *instruction,
void *baton,
uint32_t reg_kind,
uint32_t reg_num,
uint64_t &reg_value)
@@ -289,7 +261,8 @@ EmulateInstruction::ReadRegisterFrame (void *baton,
}
bool
EmulateInstruction::WriteRegisterFrame (void *baton,
EmulateInstruction::WriteRegisterFrame (EmulateInstruction *instruction,
void *baton,
const Context &context,
uint32_t reg_kind,
uint32_t reg_num,
@@ -310,7 +283,8 @@ EmulateInstruction::WriteRegisterFrame (void *baton,
}
size_t
EmulateInstruction::ReadMemoryDefault (void *baton,
EmulateInstruction::ReadMemoryDefault (EmulateInstruction *instruction,
void *baton,
const Context &context,
lldb::addr_t addr,
void *dst,
@@ -324,7 +298,8 @@ EmulateInstruction::ReadMemoryDefault (void *baton,
}
size_t
EmulateInstruction::WriteMemoryDefault (void *baton,
EmulateInstruction::WriteMemoryDefault (EmulateInstruction *instruction,
void *baton,
const Context &context,
lldb::addr_t addr,
const void *dst,
@@ -336,7 +311,8 @@ EmulateInstruction::WriteMemoryDefault (void *baton,
}
bool
EmulateInstruction::ReadRegisterDefault (void *baton,
EmulateInstruction::ReadRegisterDefault (EmulateInstruction *instruction,
void *baton,
uint32_t reg_kind,
uint32_t reg_num,
uint64_t &reg_value)
@@ -350,7 +326,8 @@ EmulateInstruction::ReadRegisterDefault (void *baton,
}
bool
EmulateInstruction::WriteRegisterDefault (void *baton,
EmulateInstruction::WriteRegisterDefault (EmulateInstruction *instruction,
void *baton,
const Context &context,
uint32_t reg_kind,
uint32_t reg_num,
@@ -601,54 +578,69 @@ EmulateInstruction::PrintContext (const char *context_type, const Context &conte
}
}
void
EmulateInstruction::TranslateRegister (uint32_t kind, uint32_t num, std::string &name)
bool
EmulateInstruction::SetInstruction (const Opcode &opcode, const Address &inst_addr, Target *target)
{
if (kind == eRegisterKindDWARF)
m_opcode = opcode;
m_opcode_pc = LLDB_INVALID_ADDRESS;
if (inst_addr.IsValid())
{
if (num == 13) //dwarf_sp NOTE: This is ARM-SPECIFIC
name = "sp";
else if (num == 14) //dwarf_lr NOTE: This is ARM-SPECIFIC
name = "lr";
else if (num == 15) //dwarf_pc NOTE: This is ARM-SPECIFIC
name = "pc";
else if (num == 16) //dwarf_cpsr NOTE: This is ARM-SPECIFIC
name = "cpsr";
else
{
StreamString sstr;
sstr.Printf ("r%d", num);
name = sstr.GetData();
}
}
else if (kind == eRegisterKindGeneric)
{
if (num == LLDB_REGNUM_GENERIC_SP)
name = "sp";
else if (num == LLDB_REGNUM_GENERIC_FLAGS)
name = "cpsr";
else if (num == LLDB_REGNUM_GENERIC_PC)
name = "pc";
else if (num == LLDB_REGNUM_GENERIC_RA)
name = "lr";
else
{
StreamString sstr;
sstr.Printf ("r%d", num);
name = sstr.GetData();
}
}
else
{
StreamString sstr;
sstr.Printf ("r%d", num);
name = sstr.GetData();
if (target)
m_opcode_pc = inst_addr.GetLoadAddress (target);
if (m_opcode_pc == LLDB_INVALID_ADDRESS)
m_opcode_pc = inst_addr.GetFileAddress ();
}
return true;
}
const char *
EmulateInstruction::TranslateRegister (uint32_t kind, uint32_t num, std::string &name)
{
if (kind == eRegisterKindGeneric)
{
switch (num)
{
case LLDB_REGNUM_GENERIC_PC: name = "pc"; break;
case LLDB_REGNUM_GENERIC_SP: name = "sp"; break;
case LLDB_REGNUM_GENERIC_FP: name = "fp"; break;
case LLDB_REGNUM_GENERIC_RA: name = "ra"; break;
case LLDB_REGNUM_GENERIC_FLAGS: name = "flags"; break;
default: name.clear(); break;
}
if (!name.empty())
return name.c_str();
}
const char *kind_cstr = NULL;
switch (kind)
{
case eRegisterKindGCC: // the register numbers seen in eh_frame
kind_cstr = "gcc";
break;
case eRegisterKindDWARF: // the register numbers seen DWARF
kind_cstr = "dwarf";
break;
case eRegisterKindGeneric: // insn ptr reg, stack ptr reg, etc not specific to any particular target
kind_cstr = "generic";
break;
case eRegisterKindGDB: // the register numbers gdb uses (matches stabs numbers?)
kind_cstr = "gdb";
break;
case eRegisterKindLLDB: // lldb's internal register numbers
kind_cstr = "lldb";
break;
}
StreamString sstr;
sstr.Printf ("%s(%u)", kind_cstr, num);
name.swap (sstr.GetString());
return name.c_str();
}