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1//===-- RegisterInfoPOSIX_loongarch64.cpp --------------------------------===//2//3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.4// See https://llvm.org/LICENSE.txt for license information.5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception6//7//===---------------------------------------------------------------------===//8 9#include <cassert>10#include <lldb/Utility/Flags.h>11#include <stddef.h>12 13#include "lldb/lldb-defines.h"14#include "llvm/Support/Compiler.h"15 16#include "RegisterInfoPOSIX_loongarch64.h"17 18#define GPR_OFFSET(idx) ((idx)*8 + 0)19#define FPR_OFFSET(idx) ((idx)*8 + sizeof(RegisterInfoPOSIX_loongarch64::GPR))20#define FCC_OFFSET(idx) ((idx)*1 + 32 * 8 + sizeof(RegisterInfoPOSIX_loongarch64::GPR))21#define FCSR_OFFSET (8 * 1 + 32 * 8 + sizeof(RegisterInfoPOSIX_loongarch64::GPR))22#define LSX_OFFSET(idx)                                                        \23  ((idx) * 16 + sizeof(RegisterInfoPOSIX_loongarch64::GPR) +                   \24   sizeof(RegisterInfoPOSIX_loongarch64::FPR))25#define LASX_OFFSET(idx)                                                       \26  ((idx) * 32 + sizeof(RegisterInfoPOSIX_loongarch64::GPR) +                   \27   sizeof(RegisterInfoPOSIX_loongarch64::FPR) +                                \28   sizeof(RegisterInfoPOSIX_loongarch64::LSX))29 30#define REG_CONTEXT_SIZE                                                       \31  (sizeof(RegisterInfoPOSIX_loongarch64::GPR) +                                \32   sizeof(RegisterInfoPOSIX_loongarch64::FPR) +                                \33   sizeof(RegisterInfoPOSIX_loongarch64::LSX) +                                \34   sizeof(RegisterInfoPOSIX_loongarch64::LASX))35 36#define DECLARE_REGISTER_INFOS_LOONGARCH64_STRUCT37#include "RegisterInfos_loongarch64.h"38#undef DECLARE_REGISTER_INFOS_LOONGARCH64_STRUCT39 40const lldb_private::RegisterInfo *41RegisterInfoPOSIX_loongarch64::GetRegisterInfoPtr(42    const lldb_private::ArchSpec &target_arch) {43  switch (target_arch.GetMachine()) {44  case llvm::Triple::loongarch64:45    return g_register_infos_loongarch64;46  default:47    assert(false && "Unhandled target architecture.");48    return nullptr;49  }50}51 52uint32_t RegisterInfoPOSIX_loongarch64::GetRegisterInfoCount(53    const lldb_private::ArchSpec &target_arch) {54  switch (target_arch.GetMachine()) {55  case llvm::Triple::loongarch64:56    return static_cast<uint32_t>(sizeof(g_register_infos_loongarch64) /57                                 sizeof(g_register_infos_loongarch64[0]));58  default:59    assert(false && "Unhandled target architecture.");60    return 0;61  }62}63 64// Number of register sets provided by this context.65enum {66  k_num_gpr_registers = gpr_last_loongarch - gpr_first_loongarch + 1,67  k_num_fpr_registers = fpr_last_loongarch - fpr_first_loongarch + 1,68  k_num_lsx_registers = lsx_last_loongarch - lsx_first_loongarch + 1,69  k_num_lasx_registers = lasx_last_loongarch - lasx_first_loongarch + 1,70  k_num_register_sets = 471};72 73// LoongArch64 general purpose registers.74static const uint32_t g_gpr_regnums_loongarch64[] = {75    gpr_r0_loongarch,        gpr_r1_loongarch,        gpr_r2_loongarch,76    gpr_r3_loongarch,        gpr_r4_loongarch,        gpr_r5_loongarch,77    gpr_r6_loongarch,        gpr_r7_loongarch,        gpr_r8_loongarch,78    gpr_r9_loongarch,        gpr_r10_loongarch,       gpr_r11_loongarch,79    gpr_r12_loongarch,       gpr_r13_loongarch,       gpr_r14_loongarch,80    gpr_r15_loongarch,       gpr_r16_loongarch,       gpr_r17_loongarch,81    gpr_r18_loongarch,       gpr_r19_loongarch,       gpr_r20_loongarch,82    gpr_r21_loongarch,       gpr_r22_loongarch,       gpr_r23_loongarch,83    gpr_r24_loongarch,       gpr_r25_loongarch,       gpr_r26_loongarch,84    gpr_r27_loongarch,       gpr_r28_loongarch,       gpr_r29_loongarch,85    gpr_r30_loongarch,       gpr_r31_loongarch,       gpr_orig_a0_loongarch,86    gpr_pc_loongarch,        gpr_badv_loongarch,      gpr_reserved0_loongarch,87    gpr_reserved1_loongarch, gpr_reserved2_loongarch, gpr_reserved3_loongarch,88    gpr_reserved4_loongarch, gpr_reserved5_loongarch, gpr_reserved6_loongarch,89    gpr_reserved7_loongarch, gpr_reserved8_loongarch, gpr_reserved9_loongarch,90    LLDB_INVALID_REGNUM};91 92static_assert(((sizeof g_gpr_regnums_loongarch64 /93                sizeof g_gpr_regnums_loongarch64[0]) -94               1) == k_num_gpr_registers,95              "g_gpr_regnums_loongarch64 has wrong number of register infos");96 97// LoongArch64 floating point registers.98static const uint32_t g_fpr_regnums_loongarch64[] = {99    fpr_f0_loongarch,   fpr_f1_loongarch,   fpr_f2_loongarch,100    fpr_f3_loongarch,   fpr_f4_loongarch,   fpr_f5_loongarch,101    fpr_f6_loongarch,   fpr_f7_loongarch,   fpr_f8_loongarch,102    fpr_f9_loongarch,   fpr_f10_loongarch,  fpr_f11_loongarch,103    fpr_f12_loongarch,  fpr_f13_loongarch,  fpr_f14_loongarch,104    fpr_f15_loongarch,  fpr_f16_loongarch,  fpr_f17_loongarch,105    fpr_f18_loongarch,  fpr_f19_loongarch,  fpr_f20_loongarch,106    fpr_f21_loongarch,  fpr_f22_loongarch,  fpr_f23_loongarch,107    fpr_f24_loongarch,  fpr_f25_loongarch,  fpr_f26_loongarch,108    fpr_f27_loongarch,  fpr_f28_loongarch,  fpr_f29_loongarch,109    fpr_f30_loongarch,  fpr_f31_loongarch,  fpr_fcc0_loongarch,110    fpr_fcc1_loongarch, fpr_fcc2_loongarch, fpr_fcc3_loongarch,111    fpr_fcc4_loongarch, fpr_fcc5_loongarch, fpr_fcc6_loongarch,112    fpr_fcc7_loongarch, fpr_fcsr_loongarch, LLDB_INVALID_REGNUM};113 114static_assert(((sizeof g_fpr_regnums_loongarch64 /115                sizeof g_fpr_regnums_loongarch64[0]) -116               1) == k_num_fpr_registers,117              "g_fpr_regnums_loongarch64 has wrong number of register infos");118 119// LoongArch64 lsx vector registers.120static const uint32_t g_lsx_regnums_loongarch64[] = {121    lsx_vr0_loongarch,  lsx_vr1_loongarch,  lsx_vr2_loongarch,122    lsx_vr3_loongarch,  lsx_vr4_loongarch,  lsx_vr5_loongarch,123    lsx_vr6_loongarch,  lsx_vr7_loongarch,  lsx_vr8_loongarch,124    lsx_vr9_loongarch,  lsx_vr10_loongarch, lsx_vr11_loongarch,125    lsx_vr12_loongarch, lsx_vr13_loongarch, lsx_vr14_loongarch,126    lsx_vr15_loongarch, lsx_vr16_loongarch, lsx_vr17_loongarch,127    lsx_vr18_loongarch, lsx_vr19_loongarch, lsx_vr20_loongarch,128    lsx_vr21_loongarch, lsx_vr22_loongarch, lsx_vr23_loongarch,129    lsx_vr24_loongarch, lsx_vr25_loongarch, lsx_vr26_loongarch,130    lsx_vr27_loongarch, lsx_vr28_loongarch, lsx_vr29_loongarch,131    lsx_vr30_loongarch, lsx_vr31_loongarch, LLDB_INVALID_REGNUM};132 133static_assert(((sizeof g_lsx_regnums_loongarch64 /134                sizeof g_lsx_regnums_loongarch64[0]) -135               1) == k_num_lsx_registers,136              "g_lsx_regnums_loongarch64 has wrong number of register infos");137 138// LoongArch64 lasx vector registers.139static const uint32_t g_lasx_regnums_loongarch64[] = {140    lasx_xr0_loongarch,  lasx_xr1_loongarch,  lasx_xr2_loongarch,141    lasx_xr3_loongarch,  lasx_xr4_loongarch,  lasx_xr5_loongarch,142    lasx_xr6_loongarch,  lasx_xr7_loongarch,  lasx_xr8_loongarch,143    lasx_xr9_loongarch,  lasx_xr10_loongarch, lasx_xr11_loongarch,144    lasx_xr12_loongarch, lasx_xr13_loongarch, lasx_xr14_loongarch,145    lasx_xr15_loongarch, lasx_xr16_loongarch, lasx_xr17_loongarch,146    lasx_xr18_loongarch, lasx_xr19_loongarch, lasx_xr20_loongarch,147    lasx_xr21_loongarch, lasx_xr22_loongarch, lasx_xr23_loongarch,148    lasx_xr24_loongarch, lasx_xr25_loongarch, lasx_xr26_loongarch,149    lasx_xr27_loongarch, lasx_xr28_loongarch, lasx_xr29_loongarch,150    lasx_xr30_loongarch, lasx_xr31_loongarch, LLDB_INVALID_REGNUM};151 152static_assert(((sizeof g_lasx_regnums_loongarch64 /153                sizeof g_lasx_regnums_loongarch64[0]) -154               1) == k_num_lasx_registers,155              "g_lasx_regnums_loongarch64 has wrong number of register infos");156 157// Register sets for LoongArch64.158static const lldb_private::RegisterSet159    g_reg_sets_loongarch64[k_num_register_sets] = {160        {"General Purpose Registers", "gpr", k_num_gpr_registers,161         g_gpr_regnums_loongarch64},162        {"Floating Point Registers", "fpr", k_num_fpr_registers,163         g_fpr_regnums_loongarch64},164        {"LSX Vector Registers", "lsx", k_num_lsx_registers,165         g_lsx_regnums_loongarch64},166        {"LASX Vector Registers", "lasx", k_num_lasx_registers,167         g_lasx_regnums_loongarch64}};168 169RegisterInfoPOSIX_loongarch64::RegisterInfoPOSIX_loongarch64(170    const lldb_private::ArchSpec &target_arch, lldb_private::Flags flags)171    : lldb_private::RegisterInfoAndSetInterface(target_arch),172      m_register_info_p(GetRegisterInfoPtr(target_arch)),173      m_register_info_count(GetRegisterInfoCount(target_arch)) {}174 175uint32_t RegisterInfoPOSIX_loongarch64::GetRegisterCount() const {176  return m_register_info_count;177}178 179size_t RegisterInfoPOSIX_loongarch64::GetGPRSize() const {180  return sizeof(struct RegisterInfoPOSIX_loongarch64::GPR);181}182 183size_t RegisterInfoPOSIX_loongarch64::GetFPRSize() const {184  return sizeof(struct RegisterInfoPOSIX_loongarch64::FPR);185}186 187const lldb_private::RegisterInfo *188RegisterInfoPOSIX_loongarch64::GetRegisterInfo() const {189  return m_register_info_p;190}191 192size_t RegisterInfoPOSIX_loongarch64::GetRegisterSetCount() const {193  return k_num_register_sets;194}195 196size_t RegisterInfoPOSIX_loongarch64::GetRegisterSetFromRegisterIndex(197    uint32_t reg_index) const {198  // coverity[unsigned_compare]199  if (reg_index >= gpr_first_loongarch && reg_index <= gpr_last_loongarch)200    return GPRegSet;201  if (reg_index >= fpr_first_loongarch && reg_index <= fpr_last_loongarch)202    return FPRegSet;203  if (reg_index >= lsx_first_loongarch && reg_index <= lsx_last_loongarch)204    return LSXRegSet;205  if (reg_index >= lasx_first_loongarch && reg_index <= lasx_last_loongarch)206    return LASXRegSet;207  return LLDB_INVALID_REGNUM;208}209 210const lldb_private::RegisterSet *211RegisterInfoPOSIX_loongarch64::GetRegisterSet(size_t set_index) const {212  if (set_index < GetRegisterSetCount())213    return &g_reg_sets_loongarch64[set_index];214  return nullptr;215}216