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//===-- RegisterContextPOSIX_powerpc.cpp -------------------------*- C++
//-*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
#include <cstring>
#include <errno.h>
#include <stdint.h>
#include "lldb/Target/Process.h"
#include "lldb/Target/Target.h"
#include "lldb/Target/Thread.h"
#include "lldb/Utility/DataBufferHeap.h"
#include "lldb/Utility/DataExtractor.h"
#include "lldb/Utility/Endian.h"
#include "lldb/Utility/RegisterValue.h"
#include "lldb/Utility/Scalar.h"
#include "llvm/Support/Compiler.h"
#include "RegisterContextPOSIX_powerpc.h"
using namespace lldb_private;
using namespace lldb;
static const uint32_t g_gpr_regnums[] = {
gpr_r0_powerpc, gpr_r1_powerpc, gpr_r2_powerpc, gpr_r3_powerpc,
gpr_r4_powerpc, gpr_r5_powerpc, gpr_r6_powerpc, gpr_r7_powerpc,
gpr_r8_powerpc, gpr_r9_powerpc, gpr_r10_powerpc, gpr_r11_powerpc,
gpr_r12_powerpc, gpr_r13_powerpc, gpr_r14_powerpc, gpr_r15_powerpc,
gpr_r16_powerpc, gpr_r17_powerpc, gpr_r18_powerpc, gpr_r19_powerpc,
gpr_r20_powerpc, gpr_r21_powerpc, gpr_r22_powerpc, gpr_r23_powerpc,
gpr_r24_powerpc, gpr_r25_powerpc, gpr_r26_powerpc, gpr_r27_powerpc,
gpr_r28_powerpc, gpr_r29_powerpc, gpr_r30_powerpc, gpr_r31_powerpc,
gpr_lr_powerpc, gpr_cr_powerpc, gpr_xer_powerpc, gpr_ctr_powerpc,
gpr_pc_powerpc,
};
static const uint32_t g_fpr_regnums[] = {
fpr_f0_powerpc, fpr_f1_powerpc, fpr_f2_powerpc, fpr_f3_powerpc,
fpr_f4_powerpc, fpr_f5_powerpc, fpr_f6_powerpc, fpr_f7_powerpc,
fpr_f8_powerpc, fpr_f9_powerpc, fpr_f10_powerpc, fpr_f11_powerpc,
fpr_f12_powerpc, fpr_f13_powerpc, fpr_f14_powerpc, fpr_f15_powerpc,
fpr_f16_powerpc, fpr_f17_powerpc, fpr_f18_powerpc, fpr_f19_powerpc,
fpr_f20_powerpc, fpr_f21_powerpc, fpr_f22_powerpc, fpr_f23_powerpc,
fpr_f24_powerpc, fpr_f25_powerpc, fpr_f26_powerpc, fpr_f27_powerpc,
fpr_f28_powerpc, fpr_f29_powerpc, fpr_f30_powerpc, fpr_f31_powerpc,
fpr_fpscr_powerpc,
};
static const uint32_t g_vmx_regnums[] = {
vmx_v0_powerpc, vmx_v1_powerpc, vmx_v2_powerpc, vmx_v3_powerpc,
vmx_v4_powerpc, vmx_v5_powerpc, vmx_v6_powerpc, vmx_v7_powerpc,
vmx_v8_powerpc, vmx_v9_powerpc, vmx_v10_powerpc, vmx_v11_powerpc,
vmx_v12_powerpc, vmx_v13_powerpc, vmx_v14_powerpc, vmx_v15_powerpc,
vmx_v16_powerpc, vmx_v17_powerpc, vmx_v18_powerpc, vmx_v19_powerpc,
vmx_v20_powerpc, vmx_v21_powerpc, vmx_v22_powerpc, vmx_v23_powerpc,
vmx_v24_powerpc, vmx_v25_powerpc, vmx_v26_powerpc, vmx_v27_powerpc,
vmx_v28_powerpc, vmx_v29_powerpc, vmx_v30_powerpc, vmx_v31_powerpc,
vmx_vrsave_powerpc, vmx_vscr_powerpc,
};
// Number of register sets provided by this context.
enum { k_num_register_sets = 3 };
static const RegisterSet g_reg_sets_powerpc[k_num_register_sets] = {
{"General Purpose Registers", "gpr", k_num_gpr_registers_powerpc,
g_gpr_regnums},
{"Floating Point Registers", "fpr", k_num_fpr_registers_powerpc,
g_fpr_regnums},
{"Altivec/VMX Registers", "vmx", k_num_vmx_registers_powerpc,
g_vmx_regnums},
};
static_assert(k_first_gpr_powerpc == 0,
"GPRs must index starting at 0, or fix IsGPR()");
bool RegisterContextPOSIX_powerpc::IsGPR(unsigned reg) {
return (reg <= k_last_gpr_powerpc); // GPR's come first.
}
bool RegisterContextPOSIX_powerpc::IsFPR(unsigned reg) {
return (reg >= k_first_fpr) && (reg <= k_last_fpr);
}
bool RegisterContextPOSIX_powerpc::IsVMX(unsigned reg) {
return (reg >= k_first_vmx) && (reg <= k_last_vmx);
}
RegisterContextPOSIX_powerpc::RegisterContextPOSIX_powerpc(
Thread &thread, uint32_t concrete_frame_idx,
RegisterInfoInterface *register_info)
: RegisterContext(thread, concrete_frame_idx) {
m_register_info_ap.reset(register_info);
}
RegisterContextPOSIX_powerpc::~RegisterContextPOSIX_powerpc() {}
void RegisterContextPOSIX_powerpc::Invalidate() {}
void RegisterContextPOSIX_powerpc::InvalidateAllRegisters() {}
unsigned RegisterContextPOSIX_powerpc::GetRegisterOffset(unsigned reg) {
assert(reg < k_num_registers_powerpc && "Invalid register number.");
return GetRegisterInfo()[reg].byte_offset;
}
unsigned RegisterContextPOSIX_powerpc::GetRegisterSize(unsigned reg) {
assert(reg < k_num_registers_powerpc && "Invalid register number.");
return GetRegisterInfo()[reg].byte_size;
}
size_t RegisterContextPOSIX_powerpc::GetRegisterCount() {
size_t num_registers = k_num_registers_powerpc;
return num_registers;
}
size_t RegisterContextPOSIX_powerpc::GetGPRSize() {
return m_register_info_ap->GetGPRSize();
}
const RegisterInfo *RegisterContextPOSIX_powerpc::GetRegisterInfo() {
// Commonly, this method is overridden and g_register_infos is copied and
// specialized. So, use GetRegisterInfo() rather than g_register_infos in
// this scope.
return m_register_info_ap->GetRegisterInfo();
}
const RegisterInfo *
RegisterContextPOSIX_powerpc::GetRegisterInfoAtIndex(size_t reg) {
if (reg < k_num_registers_powerpc)
return &GetRegisterInfo()[reg];
else
return NULL;
}
size_t RegisterContextPOSIX_powerpc::GetRegisterSetCount() {
size_t sets = 0;
for (size_t set = 0; set < k_num_register_sets; ++set) {
if (IsRegisterSetAvailable(set))
++sets;
}
return sets;
}
const RegisterSet *RegisterContextPOSIX_powerpc::GetRegisterSet(size_t set) {
if (IsRegisterSetAvailable(set))
return &g_reg_sets_powerpc[set];
else
return NULL;
}
const char *RegisterContextPOSIX_powerpc::GetRegisterName(unsigned reg) {
assert(reg < k_num_registers_powerpc && "Invalid register offset.");
return GetRegisterInfo()[reg].name;
}
lldb::ByteOrder RegisterContextPOSIX_powerpc::GetByteOrder() {
// Get the target process whose privileged thread was used for the register
// read.
lldb::ByteOrder byte_order = eByteOrderInvalid;
Process *process = CalculateProcess().get();
if (process)
byte_order = process->GetByteOrder();
return byte_order;
}
bool RegisterContextPOSIX_powerpc::IsRegisterSetAvailable(size_t set_index) {
size_t num_sets = k_num_register_sets;
return (set_index < num_sets);
}
// Used when parsing DWARF and EH frame information and any other object file
// sections that contain register numbers in them.
uint32_t RegisterContextPOSIX_powerpc::ConvertRegisterKindToRegisterNumber(
lldb::RegisterKind kind, uint32_t num) {
const uint32_t num_regs = GetRegisterCount();
assert(kind < kNumRegisterKinds);
for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) {
const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg_idx);
if (reg_info->kinds[kind] == num)
return reg_idx;
}
return LLDB_INVALID_REGNUM;
}
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