RegisterContextPOSIX_powerpc.cpp revision 321369
160484Sobrien//===-- RegisterContextPOSIX_powerpc.cpp -------------------------*- C++ 260484Sobrien//-*-===// 360484Sobrien// 460484Sobrien// The LLVM Compiler Infrastructure 560484Sobrien// 660484Sobrien// This file is distributed under the University of Illinois Open Source 760484Sobrien// License. See LICENSE.TXT for details. 860484Sobrien// 960484Sobrien//===----------------------------------------------------------------------===// 1060484Sobrien 1160484Sobrien#include <cstring> 1260484Sobrien#include <errno.h> 1360484Sobrien#include <stdint.h> 1460484Sobrien 1560484Sobrien#include "lldb/Core/RegisterValue.h" 1660484Sobrien#include "lldb/Core/Scalar.h" 1760484Sobrien#include "lldb/Target/Target.h" 1860484Sobrien#include "lldb/Target/Thread.h" 1960484Sobrien#include "lldb/Utility/DataBufferHeap.h" 2060484Sobrien#include "lldb/Utility/DataExtractor.h" 2160484Sobrien#include "lldb/Utility/Endian.h" 2260484Sobrien#include "llvm/Support/Compiler.h" 2360484Sobrien 2460484Sobrien#include "Plugins/Process/elf-core/ProcessElfCore.h" 2560484Sobrien#include "RegisterContextPOSIX_powerpc.h" 2660484Sobrien 2760484Sobrienusing namespace lldb_private; 2860484Sobrienusing namespace lldb; 2960484Sobrien 3060484Sobrienstatic const uint32_t g_gpr_regnums[] = { 3160484Sobrien gpr_r0_powerpc, gpr_r1_powerpc, gpr_r2_powerpc, gpr_r3_powerpc, 3260484Sobrien gpr_r4_powerpc, gpr_r5_powerpc, gpr_r6_powerpc, gpr_r7_powerpc, 3360484Sobrien gpr_r8_powerpc, gpr_r9_powerpc, gpr_r10_powerpc, gpr_r11_powerpc, 3460484Sobrien gpr_r12_powerpc, gpr_r13_powerpc, gpr_r14_powerpc, gpr_r15_powerpc, 3560484Sobrien gpr_r16_powerpc, gpr_r17_powerpc, gpr_r18_powerpc, gpr_r19_powerpc, 3660484Sobrien gpr_r20_powerpc, gpr_r21_powerpc, gpr_r22_powerpc, gpr_r23_powerpc, 3760484Sobrien gpr_r24_powerpc, gpr_r25_powerpc, gpr_r26_powerpc, gpr_r27_powerpc, 3860484Sobrien gpr_r28_powerpc, gpr_r29_powerpc, gpr_r30_powerpc, gpr_r31_powerpc, 3960484Sobrien gpr_lr_powerpc, gpr_cr_powerpc, gpr_xer_powerpc, gpr_ctr_powerpc, 4060484Sobrien gpr_pc_powerpc, 4160484Sobrien}; 4260484Sobrien 4360484Sobrienstatic const uint32_t g_fpr_regnums[] = { 4460484Sobrien fpr_f0_powerpc, fpr_f1_powerpc, fpr_f2_powerpc, fpr_f3_powerpc, 4560484Sobrien fpr_f4_powerpc, fpr_f5_powerpc, fpr_f6_powerpc, fpr_f7_powerpc, 4660484Sobrien fpr_f8_powerpc, fpr_f9_powerpc, fpr_f10_powerpc, fpr_f11_powerpc, 4760484Sobrien fpr_f12_powerpc, fpr_f13_powerpc, fpr_f14_powerpc, fpr_f15_powerpc, 4860484Sobrien fpr_f16_powerpc, fpr_f17_powerpc, fpr_f18_powerpc, fpr_f19_powerpc, 4960484Sobrien fpr_f20_powerpc, fpr_f21_powerpc, fpr_f22_powerpc, fpr_f23_powerpc, 5060484Sobrien fpr_f24_powerpc, fpr_f25_powerpc, fpr_f26_powerpc, fpr_f27_powerpc, 5160484Sobrien fpr_f28_powerpc, fpr_f29_powerpc, fpr_f30_powerpc, fpr_f31_powerpc, 5260484Sobrien fpr_fpscr_powerpc, 5360484Sobrien}; 5460484Sobrien 5560484Sobrienstatic const uint32_t g_vmx_regnums[] = { 5660484Sobrien vmx_v0_powerpc, vmx_v1_powerpc, vmx_v2_powerpc, vmx_v3_powerpc, 5760484Sobrien vmx_v4_powerpc, vmx_v5_powerpc, vmx_v6_powerpc, vmx_v7_powerpc, 5860484Sobrien vmx_v8_powerpc, vmx_v9_powerpc, vmx_v10_powerpc, vmx_v11_powerpc, 5960484Sobrien vmx_v12_powerpc, vmx_v13_powerpc, vmx_v14_powerpc, vmx_v15_powerpc, 6060484Sobrien vmx_v16_powerpc, vmx_v17_powerpc, vmx_v18_powerpc, vmx_v19_powerpc, 6160484Sobrien vmx_v20_powerpc, vmx_v21_powerpc, vmx_v22_powerpc, vmx_v23_powerpc, 6260484Sobrien vmx_v24_powerpc, vmx_v25_powerpc, vmx_v26_powerpc, vmx_v27_powerpc, 6360484Sobrien vmx_v28_powerpc, vmx_v29_powerpc, vmx_v30_powerpc, vmx_v31_powerpc, 6460484Sobrien vmx_vrsave_powerpc, vmx_vscr_powerpc, 6560484Sobrien}; 6660484Sobrien 6761843Sobrien// Number of register sets provided by this context. 6861843Sobrienenum { k_num_register_sets = 3 }; 6961843Sobrien 7061843Sobrienstatic const RegisterSet g_reg_sets_powerpc[k_num_register_sets] = { 7161843Sobrien {"General Purpose Registers", "gpr", k_num_gpr_registers_powerpc, 7260484Sobrien g_gpr_regnums}, 7360484Sobrien {"Floating Point Registers", "fpr", k_num_fpr_registers_powerpc, 7460484Sobrien g_fpr_regnums}, 7560484Sobrien {"Altivec/VMX Registers", "vmx", k_num_vmx_registers_powerpc, 7660484Sobrien g_vmx_regnums}, 7760484Sobrien}; 7860484Sobrien 7960484Sobrienstatic_assert(k_first_gpr_powerpc == 0, 8060484Sobrien "GPRs must index starting at 0, or fix IsGPR()"); 8160484Sobrienbool RegisterContextPOSIX_powerpc::IsGPR(unsigned reg) { 8260484Sobrien return (reg <= k_last_gpr_powerpc); // GPR's come first. 8360484Sobrien} 8460484Sobrien 8560484Sobrienbool RegisterContextPOSIX_powerpc::IsFPR(unsigned reg) { 8660484Sobrien return (reg >= k_first_fpr) && (reg <= k_last_fpr); 8760484Sobrien} 8860484Sobrien 8960484Sobrienbool RegisterContextPOSIX_powerpc::IsVMX(unsigned reg) { 9060484Sobrien return (reg >= k_first_vmx) && (reg <= k_last_vmx); 9160484Sobrien} 9260484Sobrien 9360484SobrienRegisterContextPOSIX_powerpc::RegisterContextPOSIX_powerpc( 9460484Sobrien Thread &thread, uint32_t concrete_frame_idx, 9560484Sobrien RegisterInfoInterface *register_info) 9660484Sobrien : RegisterContext(thread, concrete_frame_idx) { 9760484Sobrien m_register_info_ap.reset(register_info); 9860484Sobrien 9960484Sobrien // elf-core yet to support ReadFPR() 10060484Sobrien ProcessSP base = CalculateProcess(); 10160484Sobrien if (base.get()->GetPluginName() == ProcessElfCore::GetPluginNameStatic()) 10260484Sobrien return; 10360484Sobrien} 10460484Sobrien 10560484SobrienRegisterContextPOSIX_powerpc::~RegisterContextPOSIX_powerpc() {} 10660484Sobrien 10760484Sobrienvoid RegisterContextPOSIX_powerpc::Invalidate() {} 10860484Sobrien 10960484Sobrienvoid RegisterContextPOSIX_powerpc::InvalidateAllRegisters() {} 11060484Sobrien 11160484Sobrienunsigned RegisterContextPOSIX_powerpc::GetRegisterOffset(unsigned reg) { 11260484Sobrien assert(reg < k_num_registers_powerpc && "Invalid register number."); 11360484Sobrien return GetRegisterInfo()[reg].byte_offset; 11460484Sobrien} 11560484Sobrien 11660484Sobrienunsigned RegisterContextPOSIX_powerpc::GetRegisterSize(unsigned reg) { 11760484Sobrien assert(reg < k_num_registers_powerpc && "Invalid register number."); 11860484Sobrien return GetRegisterInfo()[reg].byte_size; 11960484Sobrien} 12060484Sobrien 12160484Sobriensize_t RegisterContextPOSIX_powerpc::GetRegisterCount() { 12260484Sobrien size_t num_registers = k_num_registers_powerpc; 12360484Sobrien return num_registers; 12460484Sobrien} 12560484Sobrien 12660484Sobriensize_t RegisterContextPOSIX_powerpc::GetGPRSize() { 12760484Sobrien return m_register_info_ap->GetGPRSize(); 12860484Sobrien} 12960484Sobrien 13060484Sobrienconst RegisterInfo *RegisterContextPOSIX_powerpc::GetRegisterInfo() { 13160484Sobrien // Commonly, this method is overridden and g_register_infos is copied and 13260484Sobrien // specialized. 13360484Sobrien // So, use GetRegisterInfo() rather than g_register_infos in this scope. 13460484Sobrien return m_register_info_ap->GetRegisterInfo(); 13560484Sobrien} 13660484Sobrien 13760484Sobrienconst RegisterInfo * 13860484SobrienRegisterContextPOSIX_powerpc::GetRegisterInfoAtIndex(size_t reg) { 13960484Sobrien if (reg < k_num_registers_powerpc) 14060484Sobrien return &GetRegisterInfo()[reg]; 14160484Sobrien else 14260484Sobrien return NULL; 14360484Sobrien} 14460484Sobrien 14560484Sobriensize_t RegisterContextPOSIX_powerpc::GetRegisterSetCount() { 14660484Sobrien size_t sets = 0; 14760484Sobrien for (size_t set = 0; set < k_num_register_sets; ++set) { 14860484Sobrien if (IsRegisterSetAvailable(set)) 14960484Sobrien ++sets; 15060484Sobrien } 15160484Sobrien 15260484Sobrien return sets; 15360484Sobrien} 15460484Sobrien 15560484Sobrienconst RegisterSet *RegisterContextPOSIX_powerpc::GetRegisterSet(size_t set) { 15660484Sobrien if (IsRegisterSetAvailable(set)) 15760484Sobrien return &g_reg_sets_powerpc[set]; 15860484Sobrien else 15960484Sobrien return NULL; 16060484Sobrien} 16160484Sobrien 16260484Sobrienconst char *RegisterContextPOSIX_powerpc::GetRegisterName(unsigned reg) { 16360484Sobrien assert(reg < k_num_registers_powerpc && "Invalid register offset."); 16460484Sobrien return GetRegisterInfo()[reg].name; 16560484Sobrien} 16660484Sobrien 16760484Sobrienlldb::ByteOrder RegisterContextPOSIX_powerpc::GetByteOrder() { 16860484Sobrien // Get the target process whose privileged thread was used for the register 16960484Sobrien // read. 17060484Sobrien lldb::ByteOrder byte_order = eByteOrderInvalid; 17160484Sobrien Process *process = CalculateProcess().get(); 17260484Sobrien 17360484Sobrien if (process) 17460484Sobrien byte_order = process->GetByteOrder(); 17560484Sobrien return byte_order; 17660484Sobrien} 17760484Sobrien 17860484Sobrienbool RegisterContextPOSIX_powerpc::IsRegisterSetAvailable(size_t set_index) { 17960484Sobrien size_t num_sets = k_num_register_sets; 18060484Sobrien 18160484Sobrien return (set_index < num_sets); 18260484Sobrien} 18360484Sobrien 18460484Sobrien// Used when parsing DWARF and EH frame information and any other 18560484Sobrien// object file sections that contain register numbers in them. 18660484Sobrienuint32_t RegisterContextPOSIX_powerpc::ConvertRegisterKindToRegisterNumber( 18760484Sobrien lldb::RegisterKind kind, uint32_t num) { 18860484Sobrien const uint32_t num_regs = GetRegisterCount(); 18960484Sobrien 19060484Sobrien assert(kind < kNumRegisterKinds); 19160484Sobrien for (uint32_t reg_idx = 0; reg_idx < num_regs; ++reg_idx) { 19260484Sobrien const RegisterInfo *reg_info = GetRegisterInfoAtIndex(reg_idx); 19360484Sobrien 19460484Sobrien if (reg_info->kinds[kind] == num) 19560484Sobrien return reg_idx; 19660484Sobrien } 19760484Sobrien 19860484Sobrien return LLDB_INVALID_REGNUM; 19960484Sobrien} 20060484Sobrien