diff --git a/lldb/include/lldb/lldb-private-types.h b/lldb/include/lldb/lldb-private-types.h index 5e71b68630a9..3be7003cd0fb 100644 --- a/lldb/include/lldb/lldb-private-types.h +++ b/lldb/include/lldb/lldb-private-types.h @@ -51,8 +51,10 @@ struct RegisterInfo { /// List of registers (terminated with LLDB_INVALID_REGNUM). If this value is /// not null, all registers in this list will be read first, at which point /// the value for this register will be valid. For example, the value list - /// for ah would be eax (x86) or rax (x64). - uint32_t *value_regs; // + /// for ah would be eax (x86) or rax (x64). Register numbers are + /// of eRegisterKindLLDB. If multiple registers are listed, the final + /// value will be the concatenation of them. + uint32_t *value_regs; /// List of registers (terminated with LLDB_INVALID_REGNUM). If this value is /// not null, all registers in this list will be invalidated when the value of /// this register changes. For example, the invalidate list for eax would be diff --git a/lldb/source/Plugins/ABI/X86/ABIX86.cpp b/lldb/source/Plugins/ABI/X86/ABIX86.cpp index 2615235cdd8f..7cdba0c5fe57 100644 --- a/lldb/source/Plugins/ABI/X86/ABIX86.cpp +++ b/lldb/source/Plugins/ABI/X86/ABIX86.cpp @@ -85,6 +85,46 @@ addPartialRegisters(std::vector ®s, } } +static void +addCombinedRegisters(std::vector ®s, + llvm::ArrayRef subregs1, + llvm::ArrayRef subregs2, uint32_t base_size, + lldb::Encoding encoding, lldb::Format format) { + for (auto it : llvm::zip(subregs1, subregs2)) { + RegData *regdata1, *regdata2; + std::tie(regdata1, regdata2) = it; + assert(regdata1); + assert(regdata2); + + // verify that we've got matching target registers + if (regdata1->subreg_name != regdata2->subreg_name) + continue; + + uint32_t base_index1 = regdata1->base_index.getValue(); + uint32_t base_index2 = regdata2->base_index.getValue(); + if (regs[base_index1].byte_size != base_size || + regs[base_index2].byte_size != base_size) + continue; + + lldb_private::DynamicRegisterInfo::Register new_reg{ + lldb_private::ConstString(regdata1->subreg_name), + lldb_private::ConstString(), + lldb_private::ConstString("supplementary registers"), + base_size * 2, + LLDB_INVALID_INDEX32, + encoding, + format, + LLDB_INVALID_REGNUM, + LLDB_INVALID_REGNUM, + LLDB_INVALID_REGNUM, + LLDB_INVALID_REGNUM, + {base_index1, base_index2}, + {}}; + + addSupplementaryRegister(regs, new_reg); + } +} + typedef llvm::SmallDenseMap, 64> BaseRegToRegsMap; @@ -121,19 +161,33 @@ typedef llvm::SmallDenseMap, 64> #define STMM(n) \ { BaseRegToRegsMap::value_type("st" #n, {{MM, "mm" #n, llvm::None}}) } -BaseRegToRegsMap makeBaseRegMap(bool is64bit) { - BaseRegToRegsMap out{{// GPRs common to amd64 & i386 - GPRh("a"), GPRh("b"), GPRh("c"), GPRh("d"), GPR("si"), - GPR("di"), GPR("bp"), GPR("sp"), +#define YMM(n) \ + {BaseRegToRegsMap::value_type("ymm" #n "h", \ + {{YMM_YMMh, "ymm" #n, llvm::None}})}, \ + { \ + BaseRegToRegsMap::value_type("xmm" #n, {{YMM_XMM, "ymm" #n, llvm::None}}) \ + } - // ST/MM registers - STMM(0), STMM(1), STMM(2), STMM(3), STMM(4), STMM(5), - STMM(6), STMM(7)}}; +BaseRegToRegsMap makeBaseRegMap(bool is64bit) { + BaseRegToRegsMap out{ + {// GPRs common to amd64 & i386 + GPRh("a"), GPRh("b"), GPRh("c"), GPRh("d"), GPR("si"), GPR("di"), + GPR("bp"), GPR("sp"), + + // ST/MM registers + STMM(0), STMM(1), STMM(2), STMM(3), STMM(4), STMM(5), STMM(6), STMM(7), + + // lower YMM registers (common to amd64 & i386) + YMM(0), YMM(1), YMM(2), YMM(3), YMM(4), YMM(5), YMM(6), YMM(7)}}; if (is64bit) { BaseRegToRegsMap amd64_regs{{// GPRs specific to amd64 GPR64(8), GPR64(9), GPR64(10), GPR64(11), - GPR64(12), GPR64(13), GPR64(14), GPR64(15)}}; + GPR64(12), GPR64(13), GPR64(14), GPR64(15), + + // higher YMM registers (specific to amd64) + YMM(8), YMM(9), YMM(10), YMM(11), YMM(12), + YMM(13), YMM(14), YMM(15)}}; out.insert(amd64_regs.begin(), amd64_regs.end()); } @@ -197,4 +251,7 @@ void ABIX86::AugmentRegisterInfo( addPartialRegisters(regs, subreg_by_kind[MM], 10, eEncodingUint, eFormatHex, 8); + + addCombinedRegisters(regs, subreg_by_kind[YMM_XMM], subreg_by_kind[YMM_YMMh], + 16, eEncodingVector, eFormatVectorOfUInt8); } diff --git a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp index f0225d0ad560..80294aefc410 100644 --- a/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp +++ b/lldb/source/Plugins/Process/gdb-remote/GDBRemoteRegisterContext.cpp @@ -87,10 +87,34 @@ bool GDBRemoteRegisterContext::ReadRegister(const RegisterInfo *reg_info, const uint32_t reg = reg_info->kinds[eRegisterKindLLDB]; if (m_reg_valid[reg] == false) return false; - const bool partial_data_ok = false; - Status error(value.SetValueFromData( - reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); - return error.Success(); + if (reg_info->value_regs && + reg_info->value_regs[0] != LLDB_INVALID_REGNUM && + reg_info->value_regs[1] != LLDB_INVALID_REGNUM) { + std::vector combined_data; + uint32_t offset = 0; + for (int i = 0; reg_info->value_regs[i] != LLDB_INVALID_REGNUM; i++) { + const RegisterInfo *parent_reg = GetRegisterInfo( + eRegisterKindLLDB, reg_info->value_regs[i]); + if (!parent_reg) + return false; + combined_data.resize(offset + parent_reg->byte_size); + if (m_reg_data.CopyData(parent_reg->byte_offset, parent_reg->byte_size, + combined_data.data() + offset) != + parent_reg->byte_size) + return false; + offset += parent_reg->byte_size; + } + + Status error; + return value.SetFromMemoryData( + reg_info, combined_data.data(), combined_data.size(), + m_reg_data.GetByteOrder(), error) == combined_data.size(); + } else { + const bool partial_data_ok = false; + Status error(value.SetValueFromData( + reg_info, m_reg_data, reg_info->byte_offset, partial_data_ok)); + return error.Success(); + } } return false; } @@ -272,8 +296,38 @@ bool GDBRemoteRegisterContext::ReadRegisterBytes(const RegisterInfo *reg_info) { bool GDBRemoteRegisterContext::WriteRegister(const RegisterInfo *reg_info, const RegisterValue &value) { DataExtractor data; - if (value.GetData(data)) - return WriteRegisterBytes(reg_info, data, 0); + if (value.GetData(data)) { + if (reg_info->value_regs && + reg_info->value_regs[0] != LLDB_INVALID_REGNUM && + reg_info->value_regs[1] != LLDB_INVALID_REGNUM) { + uint32_t combined_size = 0; + for (int i = 0; reg_info->value_regs[i] != LLDB_INVALID_REGNUM; i++) { + const RegisterInfo *parent_reg = GetRegisterInfo( + eRegisterKindLLDB, reg_info->value_regs[i]); + if (!parent_reg) + return false; + combined_size += parent_reg->byte_size; + } + + if (data.GetByteSize() < combined_size) + return false; + + uint32_t offset = 0; + for (int i = 0; reg_info->value_regs[i] != LLDB_INVALID_REGNUM; i++) { + const RegisterInfo *parent_reg = GetRegisterInfo( + eRegisterKindLLDB, reg_info->value_regs[i]); + assert(parent_reg); + + DataExtractor parent_data{data, offset, parent_reg->byte_size}; + if (!WriteRegisterBytes(parent_reg, parent_data, 0)) + return false; + offset += parent_reg->byte_size; + } + assert(offset == combined_size); + return true; + } else + return WriteRegisterBytes(reg_info, data, 0); + } return false; } diff --git a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp index 8f2a31ac2fec..3c2476c6b730 100644 --- a/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp +++ b/lldb/source/Plugins/Process/gdb-remote/ProcessGDBRemote.cpp @@ -4311,7 +4311,9 @@ bool ParseRegisters(XMLNode feature_node, GdbServerTargetInfo &target_info, reg_info.encoding = eEncodingIEEE754; } else if (gdb_type == "aarch64v" || llvm::StringRef(gdb_type).startswith("vec") || - gdb_type == "i387_ext") { + gdb_type == "i387_ext" || gdb_type == "uint128") { + // lldb doesn't handle 128-bit uints correctly (for ymm*h), so treat + // them as vector (similarly to xmm/ymm) reg_info.format = eFormatVectorOfUInt8; reg_info.encoding = eEncodingVector; } diff --git a/lldb/source/Target/DynamicRegisterInfo.cpp b/lldb/source/Target/DynamicRegisterInfo.cpp index d196c95c081d..b278e3676821 100644 --- a/lldb/source/Target/DynamicRegisterInfo.cpp +++ b/lldb/source/Target/DynamicRegisterInfo.cpp @@ -463,20 +463,11 @@ void DynamicRegisterInfo::Finalize(const ArchSpec &arch) { m_sets[set].registers = m_set_reg_nums[set].data(); } - // sort and unique all value registers and make sure each is terminated with - // LLDB_INVALID_REGNUM + // make sure value_regs are terminated with LLDB_INVALID_REGNUM for (reg_to_regs_map::iterator pos = m_value_regs_map.begin(), end = m_value_regs_map.end(); pos != end; ++pos) { - if (pos->second.size() > 1) { - llvm::sort(pos->second.begin(), pos->second.end()); - reg_num_collection::iterator unique_end = - std::unique(pos->second.begin(), pos->second.end()); - if (unique_end != pos->second.end()) - pos->second.erase(unique_end, pos->second.end()); - } - assert(!pos->second.empty()); if (pos->second.back() != LLDB_INVALID_REGNUM) pos->second.push_back(LLDB_INVALID_REGNUM); } @@ -678,13 +669,16 @@ void DynamicRegisterInfo::ConfigureOffsets() { // Now update all value_regs with each register info as needed for (auto ® : m_regs) { if (reg.value_regs != nullptr) { - // Assign a valid offset to all pseudo registers if not assigned by stub. - // Pseudo registers with value_regs list populated will share same offset - // as that of their corresponding primary register in value_regs list. + // Assign a valid offset to all pseudo registers that have only a single + // parent register in value_regs list, if not assigned by stub. Pseudo + // registers with value_regs list populated will share same offset as + // that of their corresponding parent register. if (reg.byte_offset == LLDB_INVALID_INDEX32) { uint32_t value_regnum = reg.value_regs[0]; - if (value_regnum != LLDB_INVALID_INDEX32) { - reg.byte_offset = GetRegisterInfoAtIndex(value_regnum)->byte_offset; + if (value_regnum != LLDB_INVALID_INDEX32 && + reg.value_regs[1] == LLDB_INVALID_INDEX32) { + reg.byte_offset = + GetRegisterInfoAtIndex(value_regnum)->byte_offset; auto it = m_value_reg_offset_map.find(reg.kinds[eRegisterKindLLDB]); if (it != m_value_reg_offset_map.end()) reg.byte_offset += it->second; diff --git a/lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py b/lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py index 0bb332402539..e1c52b07ddc3 100644 --- a/lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py +++ b/lldb/test/API/functionalities/gdb_remote_client/TestGDBServerTargetXML.py @@ -199,6 +199,29 @@ class TestGDBServerTargetXML(GDBRemoteTestBase): self.match("register read st0", ["st0 = {0xf8 0xf9 0xfa 0xfb 0xfc 0xfd 0xfe 0xff 0x09 0x0a}"]) + self.runCmd("register write xmm0 \"{0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 " + "0xf8 0xf7 0xf6 0xf5 0xf4 0xf3 0xf2 0xf1 0xf0}\"") + self.match("register read ymm0", + ["ymm0 = {0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 0xf8 0xf7 0xf6 " + "0xf5 0xf4 0xf3 0xf2 0xf1 0xf0 0xb1 0xb2 0xb3 0xb4 0xb5 " + "0xb6 0xb7 0xb8 0xb9 0xba 0xbb 0xbc 0xbd 0xbe 0xbf 0xc0}"]) + + self.runCmd("register write ymm0h \"{0xef 0xee 0xed 0xec 0xeb 0xea 0xe9 " + "0xe8 0xe7 0xe6 0xe5 0xe4 0xe3 0xe2 0xe1 0xe0}\"") + self.match("register read ymm0", + ["ymm0 = {0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 0xf8 0xf7 0xf6 " + "0xf5 0xf4 0xf3 0xf2 0xf1 0xf0 0xef 0xee 0xed 0xec 0xeb " + "0xea 0xe9 0xe8 0xe7 0xe6 0xe5 0xe4 0xe3 0xe2 0xe1 0xe0}"]) + + self.runCmd("register write ymm0 \"{0xd0 0xd1 0xd2 0xd3 0xd4 0xd5 0xd6 " + "0xd7 0xd8 0xd9 0xda 0xdb 0xdc 0xdd 0xde 0xdf 0xe0 0xe1 " + "0xe2 0xe3 0xe4 0xe5 0xe6 0xe7 0xe8 0xe9 0xea 0xeb 0xec " + "0xed 0xee 0xef}\"") + self.match("register read ymm0", + ["ymm0 = {0xd0 0xd1 0xd2 0xd3 0xd4 0xd5 0xd6 0xd7 0xd8 0xd9 " + "0xda 0xdb 0xdc 0xdd 0xde 0xdf 0xe0 0xe1 0xe2 0xe3 0xe4 " + "0xe5 0xe6 0xe7 0xe8 0xe9 0xea 0xeb 0xec 0xed 0xee 0xef}"]) + @skipIfXmlSupportMissing @skipIfRemote @skipIfLLVMTargetMissing("X86") @@ -361,6 +384,29 @@ class TestGDBServerTargetXML(GDBRemoteTestBase): self.match("register read st0", ["st0 = {0xf8 0xf9 0xfa 0xfb 0xfc 0xfd 0xfe 0xff 0x09 0x0a}"]) + self.runCmd("register write xmm0 \"{0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 " + "0xf8 0xf7 0xf6 0xf5 0xf4 0xf3 0xf2 0xf1 0xf0}\"") + self.match("register read ymm0", + ["ymm0 = {0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 0xf8 0xf7 0xf6 " + "0xf5 0xf4 0xf3 0xf2 0xf1 0xf0 0xb1 0xb2 0xb3 0xb4 0xb5 " + "0xb6 0xb7 0xb8 0xb9 0xba 0xbb 0xbc 0xbd 0xbe 0xbf 0xc0}"]) + + self.runCmd("register write ymm0h \"{0xef 0xee 0xed 0xec 0xeb 0xea 0xe9 " + "0xe8 0xe7 0xe6 0xe5 0xe4 0xe3 0xe2 0xe1 0xe0}\"") + self.match("register read ymm0", + ["ymm0 = {0xff 0xfe 0xfd 0xfc 0xfb 0xfa 0xf9 0xf8 0xf7 0xf6 " + "0xf5 0xf4 0xf3 0xf2 0xf1 0xf0 0xef 0xee 0xed 0xec 0xeb " + "0xea 0xe9 0xe8 0xe7 0xe6 0xe5 0xe4 0xe3 0xe2 0xe1 0xe0}"]) + + self.runCmd("register write ymm0 \"{0xd0 0xd1 0xd2 0xd3 0xd4 0xd5 0xd6 " + "0xd7 0xd8 0xd9 0xda 0xdb 0xdc 0xdd 0xde 0xdf 0xe0 0xe1 " + "0xe2 0xe3 0xe4 0xe5 0xe6 0xe7 0xe8 0xe9 0xea 0xeb 0xec " + "0xed 0xee 0xef}\"") + self.match("register read ymm0", + ["ymm0 = {0xd0 0xd1 0xd2 0xd3 0xd4 0xd5 0xd6 0xd7 0xd8 0xd9 " + "0xda 0xdb 0xdc 0xdd 0xde 0xdf 0xe0 0xe1 0xe2 0xe3 0xe4 " + "0xe5 0xe6 0xe7 0xe8 0xe9 0xea 0xeb 0xec 0xed 0xee 0xef}"]) + @skipIfXmlSupportMissing @skipIfRemote @skipIfLLVMTargetMissing("AArch64")