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sergeykhbr |
/**
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* @file
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* @copyright Copyright 2016 GNSS Sensor Ltd. All right reserved.
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* @author Sergey Khabarov - sergeykhbr@gmail.com
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* @brief Base ISA implementation (extension I, user level).
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*/
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#include "api_utils.h"
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#include "riscv-isa.h"
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#include "instructions.h"
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namespace debugger {
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void generateException(uint64_t code, CpuContextType *data);
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/**
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* @brief Addition. Overflows are ignored
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*/
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class ADD : public IsaProcessor {
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public:
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ADD() : IsaProcessor("ADD", "0000000??????????000?????0110011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_R_type u;
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u.value = payload[0];
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data->regs[u.bits.rd] =
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data->regs[u.bits.rs1] + data->regs[u.bits.rs2];
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data->npc = data->pc + 4;
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}
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};
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/**
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* @brief Add immediate
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*
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* ADDI adds the sign-extended 12-bit immediate to register rs1.
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* Arithmetic overflow is ignored and the result is simply the low 32-bits of
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* the result. ADDI rd, rs1, 0 is used to implement the MV rd, rs1 assembler
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* pseudo-instruction.
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*/
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class ADDI : public IsaProcessor {
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public:
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ADDI() : IsaProcessor("ADDI", "?????????????????000?????0010011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_I_type u;
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u.value = payload[0];
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uint64_t imm = u.bits.imm;
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if (imm & 0x800) {
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imm |= EXT_SIGN_12;
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}
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data->regs[u.bits.rd] = data->regs[u.bits.rs1] + imm;
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data->npc = data->pc + 4;
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if (u.bits.rs1 == 0) {
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RISCV_sprintf(data->disasm, sizeof(data->disasm),
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"li %s,%d", IREGS_NAMES[u.bits.rd], static_cast<uint32_t>(imm));
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} else {
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RISCV_sprintf(data->disasm, sizeof(data->disasm),
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"addi %s,%s,%d", IREGS_NAMES[u.bits.rd],
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IREGS_NAMES[u.bits.rs1],
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static_cast<uint32_t>(imm));
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}
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}
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};
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/**
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* @brief Add immediate with sign extending (RV64I)
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*
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* ADDIW is an RV64I-only instruction that adds the sign-extended 12-bit
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* immediate to register rs1 and produces the proper sign-extension of
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* a 32-bit result in rd. Overflows are ignored and the result is the low
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* 32 bits of the result sign-extended to 64 bits. Note, ADDIW rd, rs1, 0
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* writes the sign-extension of the lower 32 bits of register rs1 into
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* register rd (assembler pseudo-op SEXT.W).
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*/
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class ADDIW : public IsaProcessor {
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public:
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ADDIW() : IsaProcessor("ADDIW", "?????????????????000?????0011011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_I_type u;
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u.value = payload[0];
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uint64_t imm = u.bits.imm;
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if (imm & 0x800) {
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imm |= EXT_SIGN_12;
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}
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data->regs[u.bits.rd] = (data->regs[u.bits.rs1] + imm) & 0xFFFFFFFFLL;
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if (data->regs[u.bits.rd] & (1LL << 31)) {
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data->regs[u.bits.rd] |= EXT_SIGN_32;
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}
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data->npc = data->pc + 4;
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if (u.bits.imm == 0) {
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//RISCV_sprintf(data->disasm, sizeof(data->disasm), "sext.w %s,%d",);
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} else {
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//RISCV_sprintf(data->disasm, sizeof(data->disasm), "addiw %s,%s,%d",);
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}
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}
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};
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/**
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* @brief Add registers with sign extending (RV64I)
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*
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* ADDW is RV64I-only instructions that are defined analogously to
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* ADD but operate on 32-bit values and produce signed 32-bit results.
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* Overflows are ignored, and the low 32-bits of the result is sign-extended
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* to 64-bits and written to the destination register.
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*/
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class ADDW : public IsaProcessor {
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public:
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ADDW() : IsaProcessor("ADDW", "0000000??????????000?????0111011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_R_type u;
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u.value = payload[0];
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data->regs[u.bits.rd] =
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(data->regs[u.bits.rs1] + data->regs[u.bits.rs2]) & 0xFFFFFFFFLL;
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if (data->regs[u.bits.rd] & (1LL << 31)) {
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data->regs[u.bits.rd] |= EXT_SIGN_32;
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}
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data->npc = data->pc + 4;
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}
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};
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/**
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* @brief AND bitwise logical operation.
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*/
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class AND : public IsaProcessor {
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public:
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AND() : IsaProcessor("AND", "0000000??????????111?????0110011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_R_type u;
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u.value = payload[0];
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data->regs[u.bits.rd] =
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data->regs[u.bits.rs1] & data->regs[u.bits.rs2];
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data->npc = data->pc + 4;
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}
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};
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/**
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* @brief ANDI logical operation with immediate.
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*
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* ANDI, ORI, XORI are logical operations that perform bitwise AND, OR,
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* and XOR on register rs1 and the sign-extended 12-bit immediate and place
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* the result in rd.
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*/
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class ANDI : public IsaProcessor {
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public:
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ANDI() : IsaProcessor("ANDI", "?????????????????111?????0010011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_I_type u;
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u.value = payload[0];
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uint64_t imm = u.bits.imm;
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if (imm & 0x800) {
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imm |= EXT_SIGN_12;
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}
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data->regs[u.bits.rd] = data->regs[u.bits.rs1] & imm;
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data->npc = data->pc + 4;
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}
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};
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/**
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* @brief AUIPC (add upper immediate to pc)
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*
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* AUIPC is used to build pc-relative addresses and uses the U-type
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* format. AUIPC forms a 32-bit offset from the 20-bit U-immediate,
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* filling in the lowest 12 bits with zeros, adds this offset to the pc,
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* then places the result in register rd.
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*/
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class AUIPC : public IsaProcessor {
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public:
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AUIPC() : IsaProcessor("AUIPC", "?????????????????????????0010111") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_U_type u;
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u.value = payload[0];
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uint64_t off = u.bits.imm31_12 << 12;
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if (off & (1LL << 31)) {
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off |= EXT_SIGN_32;
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}
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data->regs[u.bits.rd] = data->pc + off;
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data->npc = data->pc + 4;
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}
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};
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/**
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* @brief The BEQ (Branch if registers are equal)
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*/
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class BEQ : public IsaProcessor {
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public:
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BEQ() : IsaProcessor("BEQ", "?????????????????000?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (data->regs[u.bits.rs1] == data->regs[u.bits.rs2]) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
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/**
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* @brief The BGE (Branch if greater than or equal using signed comparision)
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*
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* All branch instructions use the SB-type instruction format. The 12-bit
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* B-immediate encodes signed offsets in multiples of 2, and is added to the
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* current pc to give the target address. The conditional branch range
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* is ±4 KiB.
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*/
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class BGE : public IsaProcessor {
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public:
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BGE() : IsaProcessor("BGE", "?????????????????101?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (static_cast<int64_t>(data->regs[u.bits.rs1]) >=
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static_cast<int64_t>(data->regs[u.bits.rs2])) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
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/**
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* @brief The BGEU (Branch if greater than or equal using unsigned comparision)
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*/
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class BGEU : public IsaProcessor {
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public:
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BGEU() : IsaProcessor("BGEU", "?????????????????111?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (data->regs[u.bits.rs1] >= data->regs[u.bits.rs2]) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
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/**
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* @brief The BLT (Branch if less than using signed comparision)
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*/
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class BLT : public IsaProcessor {
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public:
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BLT() : IsaProcessor("BLT", "?????????????????100?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (static_cast<int64_t>(data->regs[u.bits.rs1]) <
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static_cast<int64_t>(data->regs[u.bits.rs2])) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
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/**
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* @brief The BLTU (Branch if less than using unsigned comparision)
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*/
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class BLTU : public IsaProcessor {
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public:
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BLTU() : IsaProcessor("BLTU", "?????????????????110?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (data->regs[u.bits.rs1] < data->regs[u.bits.rs2]) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
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/**
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* @brief The BNE (Branch if registers are unequal)
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*/
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class BNE : public IsaProcessor {
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public:
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BNE() : IsaProcessor("BNE", "?????????????????001?????1100011") {}
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virtual void exec(uint32_t *payload, CpuContextType *data) {
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ISA_SB_type u;
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u.value = payload[0];
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if (data->regs[u.bits.rs1] != data->regs[u.bits.rs2]) {
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uint64_t imm = (u.bits.imm12 << 12) | (u.bits.imm11 << 11)
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| (u.bits.imm10_5 << 5) | (u.bits.imm4_1 << 1);
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if (u.bits.imm12) {
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imm |= EXT_SIGN_12;
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}
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data->npc = data->pc + imm;
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} else {
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data->npc = data->pc + 4;
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}
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}
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};
|
344 |
|
|
|
345 |
|
|
/**
|
346 |
|
|
* @brief JAL (Jump and link).
|
347 |
|
|
*
|
348 |
|
|
* Unconditional jump. The offset is sign-extended and added to the pc to form
|
349 |
|
|
* the jump target address. Jumps can therefore target a ±1 MiB range. JAL
|
350 |
|
|
* stores the address of the instruction following the jump (pc+4) into
|
351 |
|
|
* register rd. The standard software calling convention uses x1 as the return
|
352 |
|
|
* address register.
|
353 |
|
|
*
|
354 |
|
|
* J (pseudo-op) 0 Plain unconditional jumps are encoded as a JAL with rd=x0.
|
355 |
|
|
*/
|
356 |
|
|
class JAL : public IsaProcessor {
|
357 |
|
|
public:
|
358 |
|
|
JAL() : IsaProcessor("JAL", "?????????????????????????1101111") {}
|
359 |
|
|
|
360 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
361 |
|
|
ISA_UJ_type u;
|
362 |
|
|
u.value = payload[0];
|
363 |
|
|
uint64_t off = 0;
|
364 |
|
|
if (u.bits.imm20) {
|
365 |
|
|
off = 0xfffffffffff00000LL;
|
366 |
|
|
}
|
367 |
|
|
off |= (u.bits.imm19_12 << 12);
|
368 |
|
|
off |= (u.bits.imm11 << 11);
|
369 |
|
|
off |= (u.bits.imm10_1 << 1);
|
370 |
|
|
if (u.bits.rd != 0) {
|
371 |
|
|
data->regs[u.bits.rd] = data->pc + 4;
|
372 |
|
|
}
|
373 |
|
|
data->npc = data->pc + off;
|
374 |
|
|
if (u.bits.rd == Reg_ra) {
|
375 |
|
|
if (data->stack_trace_cnt < STACK_TRACE_BUF_SIZE/2) {
|
376 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt] = data->pc;
|
377 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt] &= ~0x1;
|
378 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt+1] = data->npc;
|
379 |
|
|
}
|
380 |
|
|
data->stack_trace_cnt++;
|
381 |
|
|
}
|
382 |
|
|
}
|
383 |
|
|
};
|
384 |
|
|
|
385 |
|
|
/**
|
386 |
|
|
* @brief JALR (Jump and link register).
|
387 |
|
|
*
|
388 |
|
|
* The target address is obtained by adding the 12-bit signed I-immediate to
|
389 |
|
|
* the register rs1, then setting the least-significant bit of the result to
|
390 |
|
|
* zero. The address of the instruction following the jump (pc+4) is written
|
391 |
|
|
* to register rd. Register x0 can be used as the destination if the result
|
392 |
|
|
* is not required.
|
393 |
|
|
*/
|
394 |
|
|
class JALR : public IsaProcessor {
|
395 |
|
|
public:
|
396 |
|
|
JALR() : IsaProcessor("JALR", "?????????????????000?????1100111") {}
|
397 |
|
|
|
398 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
399 |
|
|
ISA_I_type u;
|
400 |
|
|
u.value = payload[0];
|
401 |
|
|
uint64_t off = u.bits.imm;
|
402 |
|
|
if (u.bits.imm & 0x800) {
|
403 |
|
|
off |= 0xfffffffffffff000LL;
|
404 |
|
|
}
|
405 |
|
|
off += data->regs[u.bits.rs1];
|
406 |
|
|
off &= ~0x1LL;
|
407 |
|
|
if (u.bits.rd != 0) {
|
408 |
|
|
data->regs[u.bits.rd] = data->pc + 4;
|
409 |
|
|
}
|
410 |
|
|
data->npc = off;
|
411 |
|
|
|
412 |
|
|
// Stack trace buffer:
|
413 |
|
|
if (u.bits.rd == Reg_ra) {
|
414 |
|
|
if (data->stack_trace_cnt < STACK_TRACE_BUF_SIZE/2) {
|
415 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt] = data->pc;
|
416 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt] &= ~0x1;
|
417 |
|
|
data->stack_trace_buf[2*data->stack_trace_cnt+1] = data->npc;
|
418 |
|
|
}
|
419 |
|
|
data->stack_trace_cnt++;
|
420 |
|
|
} else if (u.bits.imm == 0 && u.bits.rs1 == Reg_ra
|
421 |
|
|
&& data->stack_trace_cnt) {
|
422 |
|
|
data->stack_trace_cnt--;
|
423 |
|
|
}
|
424 |
|
|
}
|
425 |
|
|
};
|
426 |
|
|
|
427 |
|
|
/**
|
428 |
|
|
* @brief LOAD instructions (LD, LW, LH, LB) with sign extending.
|
429 |
|
|
*
|
430 |
|
|
* Loads copy a value from memory to register rd.
|
431 |
|
|
* The effective byte address is obtained by adding register rs1 to the
|
432 |
|
|
* sign-extended 12-bit offset.
|
433 |
|
|
* The LW instruction loads a 32-bit value from memory into rd. LH loads
|
434 |
|
|
* a 16-bit value from memory, then sign-extends to 32-bits before storing
|
435 |
|
|
* in rd.
|
436 |
|
|
*/
|
437 |
|
|
class LD : public IsaProcessor {
|
438 |
|
|
public:
|
439 |
|
|
LD() : IsaProcessor("LD", "?????????????????011?????0000011") {}
|
440 |
|
|
|
441 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
442 |
|
|
Axi4TransactionType trans;
|
443 |
|
|
ISA_I_type u;
|
444 |
|
|
u.value = payload[0];
|
445 |
|
|
uint64_t off = u.bits.imm;
|
446 |
|
|
if (off & 0x800) {
|
447 |
|
|
off |= EXT_SIGN_12;
|
448 |
|
|
}
|
449 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
450 |
|
|
trans.action = MemAction_Read;
|
451 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
452 |
|
|
trans.xsize = 8;
|
453 |
|
|
if (trans.addr & 0x7) {
|
454 |
|
|
trans.rpayload.b64[0] = 0;
|
455 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
456 |
|
|
} else {
|
457 |
|
|
data->ibus->b_transport(&trans);
|
458 |
|
|
data->npc = data->pc + 4;
|
459 |
|
|
}
|
460 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b64[0];
|
461 |
|
|
if (data->mem_trace_file) {
|
462 |
|
|
char tstr[512];
|
463 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
464 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
465 |
|
|
static_cast<int>(data->pc),
|
466 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
467 |
|
|
(*data->mem_trace_file) << tstr;
|
468 |
|
|
data->mem_trace_file->flush();
|
469 |
|
|
}
|
470 |
|
|
}
|
471 |
|
|
};
|
472 |
|
|
|
473 |
|
|
/**
|
474 |
|
|
* Load 32-bits with sign extending.
|
475 |
|
|
*/
|
476 |
|
|
class LW : public IsaProcessor {
|
477 |
|
|
public:
|
478 |
|
|
LW() : IsaProcessor("LW", "?????????????????010?????0000011") {}
|
479 |
|
|
|
480 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
481 |
|
|
Axi4TransactionType trans;
|
482 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
483 |
|
|
trans.rpayload.b64[0] = 0;
|
484 |
|
|
ISA_I_type u;
|
485 |
|
|
u.value = payload[0];
|
486 |
|
|
uint64_t off = u.bits.imm;
|
487 |
|
|
if (off & 0x800) {
|
488 |
|
|
off |= EXT_SIGN_12;
|
489 |
|
|
}
|
490 |
|
|
trans.action = MemAction_Read;
|
491 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
492 |
|
|
trans.xsize = 4;
|
493 |
|
|
if (trans.addr & 0x3) {
|
494 |
|
|
trans.rpayload.b64[0] = 0;
|
495 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
496 |
|
|
} else {
|
497 |
|
|
data->ibus->b_transport(&trans);
|
498 |
|
|
data->npc = data->pc + 4;
|
499 |
|
|
}
|
500 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b64[0];
|
501 |
|
|
if (data->regs[u.bits.rd] & (1LL << 31)) {
|
502 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_32;
|
503 |
|
|
}
|
504 |
|
|
if (data->mem_trace_file) {
|
505 |
|
|
char tstr[512];
|
506 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
507 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
508 |
|
|
static_cast<int>(data->pc),
|
509 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
510 |
|
|
(*data->mem_trace_file) << tstr;
|
511 |
|
|
data->mem_trace_file->flush();
|
512 |
|
|
}
|
513 |
|
|
}
|
514 |
|
|
};
|
515 |
|
|
|
516 |
|
|
/**
|
517 |
|
|
* Load 32-bits with zero extending.
|
518 |
|
|
*/
|
519 |
|
|
class LWU : public IsaProcessor {
|
520 |
|
|
public:
|
521 |
|
|
LWU() : IsaProcessor("LWU", "?????????????????110?????0000011") {}
|
522 |
|
|
|
523 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
524 |
|
|
Axi4TransactionType trans;
|
525 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
526 |
|
|
trans.rpayload.b64[0] = 0;
|
527 |
|
|
ISA_I_type u;
|
528 |
|
|
u.value = payload[0];
|
529 |
|
|
uint64_t off = u.bits.imm;
|
530 |
|
|
if (off & 0x800) {
|
531 |
|
|
off |= EXT_SIGN_12;
|
532 |
|
|
}
|
533 |
|
|
trans.action = MemAction_Read;
|
534 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
535 |
|
|
trans.xsize = 4;
|
536 |
|
|
if (trans.addr & 0x3) {
|
537 |
|
|
trans.rpayload.b64[0] = 0;
|
538 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
539 |
|
|
} else {
|
540 |
|
|
data->ibus->b_transport(&trans);
|
541 |
|
|
data->npc = data->pc + 4;
|
542 |
|
|
}
|
543 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b64[0];
|
544 |
|
|
if (data->mem_trace_file) {
|
545 |
|
|
char tstr[512];
|
546 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
547 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
548 |
|
|
static_cast<int>(data->pc),
|
549 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
550 |
|
|
(*data->mem_trace_file) << tstr;
|
551 |
|
|
data->mem_trace_file->flush();
|
552 |
|
|
}
|
553 |
|
|
}
|
554 |
|
|
};
|
555 |
|
|
|
556 |
|
|
/**
|
557 |
|
|
* Load 16-bits with sign extending.
|
558 |
|
|
*/
|
559 |
|
|
class LH : public IsaProcessor {
|
560 |
|
|
public:
|
561 |
|
|
LH() : IsaProcessor("LH", "?????????????????001?????0000011") {}
|
562 |
|
|
|
563 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
564 |
|
|
Axi4TransactionType trans;
|
565 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
566 |
|
|
trans.rpayload.b64[0] = 0;
|
567 |
|
|
ISA_I_type u;
|
568 |
|
|
u.value = payload[0];
|
569 |
|
|
uint64_t off = u.bits.imm;
|
570 |
|
|
if (off & 0x800) {
|
571 |
|
|
off |= EXT_SIGN_12;
|
572 |
|
|
}
|
573 |
|
|
trans.action = MemAction_Read;
|
574 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
575 |
|
|
trans.xsize = 2;
|
576 |
|
|
if (trans.addr & 0x1) {
|
577 |
|
|
trans.rpayload.b64[0] = 0;
|
578 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
579 |
|
|
} else {
|
580 |
|
|
data->ibus->b_transport(&trans);
|
581 |
|
|
data->npc = data->pc + 4;
|
582 |
|
|
}
|
583 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b16[0];
|
584 |
|
|
if (data->regs[u.bits.rd] & (1LL << 15)) {
|
585 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_16;
|
586 |
|
|
}
|
587 |
|
|
if (data->mem_trace_file) {
|
588 |
|
|
char tstr[512];
|
589 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
590 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
591 |
|
|
static_cast<int>(data->pc),
|
592 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
593 |
|
|
(*data->mem_trace_file) << tstr;
|
594 |
|
|
data->mem_trace_file->flush();
|
595 |
|
|
}
|
596 |
|
|
}
|
597 |
|
|
};
|
598 |
|
|
|
599 |
|
|
/**
|
600 |
|
|
* Load 16-bits with zero extending.
|
601 |
|
|
*/
|
602 |
|
|
class LHU : public IsaProcessor {
|
603 |
|
|
public:
|
604 |
|
|
LHU() : IsaProcessor("LHU", "?????????????????101?????0000011") {}
|
605 |
|
|
|
606 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
607 |
|
|
Axi4TransactionType trans;
|
608 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
609 |
|
|
trans.rpayload.b64[0] = 0;
|
610 |
|
|
ISA_I_type u;
|
611 |
|
|
u.value = payload[0];
|
612 |
|
|
uint64_t off = u.bits.imm;
|
613 |
|
|
if (off & 0x800) {
|
614 |
|
|
off |= EXT_SIGN_12;
|
615 |
|
|
}
|
616 |
|
|
trans.action = MemAction_Read;
|
617 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
618 |
|
|
trans.xsize = 2;
|
619 |
|
|
if (trans.addr & 0x1) {
|
620 |
|
|
trans.rpayload.b64[0] = 0;
|
621 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
622 |
|
|
} else {
|
623 |
|
|
data->ibus->b_transport(&trans);
|
624 |
|
|
data->npc = data->pc + 4;
|
625 |
|
|
}
|
626 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b16[0];
|
627 |
|
|
if (data->mem_trace_file) {
|
628 |
|
|
char tstr[512];
|
629 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
630 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
631 |
|
|
static_cast<int>(data->pc),
|
632 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
633 |
|
|
(*data->mem_trace_file) << tstr;
|
634 |
|
|
data->mem_trace_file->flush();
|
635 |
|
|
}
|
636 |
|
|
}
|
637 |
|
|
};
|
638 |
|
|
|
639 |
|
|
/**
|
640 |
|
|
* Load 8-bits with sign extending.
|
641 |
|
|
*/
|
642 |
|
|
class LB : public IsaProcessor {
|
643 |
|
|
public:
|
644 |
|
|
LB() : IsaProcessor("LB", "?????????????????000?????0000011") {}
|
645 |
|
|
|
646 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
647 |
|
|
Axi4TransactionType trans;
|
648 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
649 |
|
|
trans.rpayload.b64[0] = 0;
|
650 |
|
|
ISA_I_type u;
|
651 |
|
|
u.value = payload[0];
|
652 |
|
|
uint64_t off = u.bits.imm;
|
653 |
|
|
if (off & 0x800) {
|
654 |
|
|
off |= EXT_SIGN_12;
|
655 |
|
|
}
|
656 |
|
|
trans.action = MemAction_Read;
|
657 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
658 |
|
|
trans.xsize = 1;
|
659 |
|
|
data->ibus->b_transport(&trans);
|
660 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b8[0];
|
661 |
|
|
if (data->regs[u.bits.rd] & (1LL << 7)) {
|
662 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_8;
|
663 |
|
|
}
|
664 |
|
|
data->npc = data->pc + 4;
|
665 |
|
|
if (data->mem_trace_file) {
|
666 |
|
|
char tstr[512];
|
667 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
668 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
669 |
|
|
static_cast<int>(data->pc),
|
670 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
671 |
|
|
(*data->mem_trace_file) << tstr;
|
672 |
|
|
data->mem_trace_file->flush();
|
673 |
|
|
}
|
674 |
|
|
}
|
675 |
|
|
};
|
676 |
|
|
|
677 |
|
|
/**
|
678 |
|
|
* Load 8-bits with zero extending.
|
679 |
|
|
*/
|
680 |
|
|
class LBU : public IsaProcessor {
|
681 |
|
|
public:
|
682 |
|
|
LBU() : IsaProcessor("LBU", "?????????????????100?????0000011") {}
|
683 |
|
|
|
684 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
685 |
|
|
Axi4TransactionType trans;
|
686 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
687 |
|
|
trans.rpayload.b64[0] = 0;
|
688 |
|
|
ISA_I_type u;
|
689 |
|
|
u.value = payload[0];
|
690 |
|
|
uint64_t off = u.bits.imm;
|
691 |
|
|
if (off & 0x800) {
|
692 |
|
|
off |= EXT_SIGN_12;
|
693 |
|
|
}
|
694 |
|
|
trans.action = MemAction_Read;
|
695 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
696 |
|
|
trans.xsize = 1;
|
697 |
|
|
data->ibus->b_transport(&trans);
|
698 |
|
|
data->regs[u.bits.rd] = trans.rpayload.b8[0];
|
699 |
|
|
data->npc = data->pc + 4;
|
700 |
|
|
if (data->mem_trace_file) {
|
701 |
|
|
char tstr[512];
|
702 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
703 |
|
|
"%08x: [%08x] => %016" RV_PRI64 "x\n",
|
704 |
|
|
static_cast<int>(data->pc),
|
705 |
|
|
static_cast<int>(trans.addr), trans.rpayload.b64[0]);
|
706 |
|
|
(*data->mem_trace_file) << tstr;
|
707 |
|
|
data->mem_trace_file->flush();
|
708 |
|
|
}
|
709 |
|
|
}
|
710 |
|
|
};
|
711 |
|
|
|
712 |
|
|
/**
|
713 |
|
|
* @brief LUI (load upper immediate).
|
714 |
|
|
*
|
715 |
|
|
* It is used to build 32-bit constants and uses the U-type format. LUI places
|
716 |
|
|
* the U-immediate value in the top 20 bits of the destination register rd,
|
717 |
|
|
* filling in the lowest 12 bits with zeros.
|
718 |
|
|
*/
|
719 |
|
|
class LUI : public IsaProcessor {
|
720 |
|
|
public:
|
721 |
|
|
LUI() : IsaProcessor("LUI", "?????????????????????????0110111") {}
|
722 |
|
|
|
723 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
724 |
|
|
ISA_U_type u;
|
725 |
|
|
u.value = payload[0];
|
726 |
|
|
uint64_t tmp = u.bits.imm31_12 << 12;
|
727 |
|
|
if (tmp & 0x80000000) {
|
728 |
|
|
tmp |= EXT_SIGN_32;
|
729 |
|
|
}
|
730 |
|
|
data->regs[u.bits.rd] = tmp;
|
731 |
|
|
data->npc = data->pc + 4;
|
732 |
|
|
}
|
733 |
|
|
};
|
734 |
|
|
|
735 |
|
|
/**
|
736 |
|
|
* @brief OR bitwise operation
|
737 |
|
|
*/
|
738 |
|
|
class OR : public IsaProcessor {
|
739 |
|
|
public:
|
740 |
|
|
OR() : IsaProcessor("OR", "0000000??????????110?????0110011") {}
|
741 |
|
|
|
742 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
743 |
|
|
ISA_R_type u;
|
744 |
|
|
u.value = payload[0];
|
745 |
|
|
data->regs[u.bits.rd] =
|
746 |
|
|
data->regs[u.bits.rs1] | data->regs[u.bits.rs2];
|
747 |
|
|
data->npc = data->pc + 4;
|
748 |
|
|
}
|
749 |
|
|
};
|
750 |
|
|
|
751 |
|
|
/**
|
752 |
|
|
* @brief OR on register rs1 and the sign-extended 12-bit immediate.
|
753 |
|
|
*/
|
754 |
|
|
class ORI : public IsaProcessor {
|
755 |
|
|
public:
|
756 |
|
|
ORI() : IsaProcessor("ORI", "?????????????????110?????0010011") {}
|
757 |
|
|
|
758 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
759 |
|
|
ISA_I_type u;
|
760 |
|
|
u.value = payload[0];
|
761 |
|
|
|
762 |
|
|
uint64_t imm = u.bits.imm;
|
763 |
|
|
if (imm & 0x800) {
|
764 |
|
|
imm |= EXT_SIGN_12;
|
765 |
|
|
}
|
766 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] | imm;
|
767 |
|
|
data->npc = data->pc + 4;
|
768 |
|
|
}
|
769 |
|
|
};
|
770 |
|
|
|
771 |
|
|
/**
|
772 |
|
|
* @brief SLLI is a logical left shift (zeros are shifted into the lower bits)
|
773 |
|
|
*/
|
774 |
|
|
class SLLI : public IsaProcessor {
|
775 |
|
|
public:
|
776 |
|
|
SLLI() : IsaProcessor("SLLI", "000000???????????001?????0010011") {}
|
777 |
|
|
|
778 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
779 |
|
|
ISA_I_type u;
|
780 |
|
|
u.value = payload[0];
|
781 |
|
|
uint32_t shamt = u.bits.imm & 0x3f;
|
782 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] << shamt;
|
783 |
|
|
data->npc = data->pc + 4;
|
784 |
|
|
}
|
785 |
|
|
};
|
786 |
|
|
|
787 |
|
|
/**
|
788 |
|
|
* @brief The SLT (signed comparision)
|
789 |
|
|
*
|
790 |
|
|
* It places the value 1 in register rd if rs1 < rs2, 0 otherwise
|
791 |
|
|
*/
|
792 |
|
|
class SLT : public IsaProcessor {
|
793 |
|
|
public:
|
794 |
|
|
SLT() : IsaProcessor("SLT", "0000000??????????010?????0110011") {}
|
795 |
|
|
|
796 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
797 |
|
|
ISA_R_type u;
|
798 |
|
|
u.value = payload[0];
|
799 |
|
|
if (static_cast<int64_t>(data->regs[u.bits.rs1]) <
|
800 |
|
|
static_cast<int64_t>(data->regs[u.bits.rs2])) {
|
801 |
|
|
data->regs[u.bits.rd] = 1;
|
802 |
|
|
} else {
|
803 |
|
|
data->regs[u.bits.rd] = 0;
|
804 |
|
|
}
|
805 |
|
|
data->npc = data->pc + 4;
|
806 |
|
|
}
|
807 |
|
|
};
|
808 |
|
|
|
809 |
|
|
/**
|
810 |
|
|
* @brief The SLTI (set less than immediate)
|
811 |
|
|
*
|
812 |
|
|
* It places the value 1 in register rd if register rs1 is less than the
|
813 |
|
|
* sign-extended immediate when both are treated as signed numbers, else 0
|
814 |
|
|
* is written to rd.
|
815 |
|
|
*/
|
816 |
|
|
class SLTI : public IsaProcessor {
|
817 |
|
|
public:
|
818 |
|
|
SLTI() : IsaProcessor("SLTI", "?????????????????010?????0010011") {}
|
819 |
|
|
|
820 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
821 |
|
|
ISA_I_type u;
|
822 |
|
|
u.value = payload[0];
|
823 |
|
|
|
824 |
|
|
uint64_t imm = u.bits.imm;
|
825 |
|
|
if (imm & 0x800) {
|
826 |
|
|
imm |= EXT_SIGN_12;
|
827 |
|
|
}
|
828 |
|
|
if (static_cast<int64_t>(data->regs[u.bits.rs1]) <
|
829 |
|
|
static_cast<int64_t>(imm)) {
|
830 |
|
|
data->regs[u.bits.rd] = 1;
|
831 |
|
|
} else {
|
832 |
|
|
data->regs[u.bits.rd] = 0;
|
833 |
|
|
}
|
834 |
|
|
data->npc = data->pc + 4;
|
835 |
|
|
}
|
836 |
|
|
};
|
837 |
|
|
|
838 |
|
|
/**
|
839 |
|
|
* @brief The SLTU (unsigned comparision)
|
840 |
|
|
*
|
841 |
|
|
* SLTU perform unsigned compares, writing 1 to rd if rs1 < rs2, 0 otherwise.
|
842 |
|
|
* @note SLTU rd, x0, rs2 sets rd to 1 if rs2 is not equal to zero, otherwise
|
843 |
|
|
* sets rd to zero (assembler pseudo-op SNEZ rd, rs).
|
844 |
|
|
*/
|
845 |
|
|
class SLTU : public IsaProcessor {
|
846 |
|
|
public:
|
847 |
|
|
SLTU() : IsaProcessor("SLTU", "0000000??????????011?????0110011") {}
|
848 |
|
|
|
849 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
850 |
|
|
ISA_R_type u;
|
851 |
|
|
u.value = payload[0];
|
852 |
|
|
if (data->regs[u.bits.rs1] < data->regs[u.bits.rs2]) {
|
853 |
|
|
data->regs[u.bits.rd] = 1;
|
854 |
|
|
} else {
|
855 |
|
|
data->regs[u.bits.rd] = 0;
|
856 |
|
|
}
|
857 |
|
|
data->npc = data->pc + 4;
|
858 |
|
|
}
|
859 |
|
|
};
|
860 |
|
|
|
861 |
|
|
/**
|
862 |
|
|
* @brief The SLTIU (set less than immediate comparing unsgined values)
|
863 |
|
|
*
|
864 |
|
|
* SLTIU is similar but compares the values as unsigned numbers (i.e., the
|
865 |
|
|
* immediate is first sign-extended to 32-bits then treated as an unsigned
|
866 |
|
|
* number). Note, SLTIU rd, rs1, 1 sets rd to 1 if rs1 equals zero, otherwise
|
867 |
|
|
* sets rd to 0 (assembler pseudo-op SEQZ rd, rs).
|
868 |
|
|
*/
|
869 |
|
|
class SLTIU : public IsaProcessor {
|
870 |
|
|
public:
|
871 |
|
|
SLTIU() : IsaProcessor("SLTIU", "?????????????????011?????0010011") {}
|
872 |
|
|
|
873 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
874 |
|
|
ISA_I_type u;
|
875 |
|
|
u.value = payload[0];
|
876 |
|
|
|
877 |
|
|
uint64_t imm = u.bits.imm;
|
878 |
|
|
if (imm & 0x800) {
|
879 |
|
|
imm |= EXT_SIGN_12;
|
880 |
|
|
}
|
881 |
|
|
if (data->regs[u.bits.rs1] < imm) {
|
882 |
|
|
data->regs[u.bits.rd] = 1;
|
883 |
|
|
} else {
|
884 |
|
|
data->regs[u.bits.rd] = 0;
|
885 |
|
|
}
|
886 |
|
|
data->npc = data->pc + 4;
|
887 |
|
|
}
|
888 |
|
|
};
|
889 |
|
|
|
890 |
|
|
/**
|
891 |
|
|
* @brief SLL logical shift left
|
892 |
|
|
*/
|
893 |
|
|
class SLL : public IsaProcessor {
|
894 |
|
|
public:
|
895 |
|
|
SLL() : IsaProcessor("SLL", "0000000??????????001?????0110011") {}
|
896 |
|
|
|
897 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
898 |
|
|
ISA_R_type u;
|
899 |
|
|
u.value = payload[0];
|
900 |
|
|
data->regs[u.bits.rd] =
|
901 |
|
|
data->regs[u.bits.rs1] << (data->regs[u.bits.rs2] & 0x3F);
|
902 |
|
|
data->npc = data->pc + 4;
|
903 |
|
|
}
|
904 |
|
|
};
|
905 |
|
|
|
906 |
|
|
|
907 |
|
|
/**
|
908 |
|
|
* @brief SLLW is a left shifts by register defined value (RV64I).
|
909 |
|
|
*/
|
910 |
|
|
class SLLW : public IsaProcessor {
|
911 |
|
|
public:
|
912 |
|
|
SLLW() : IsaProcessor("SLLW", "0000000??????????001?????0111011") {}
|
913 |
|
|
|
914 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
915 |
|
|
ISA_R_type u;
|
916 |
|
|
u.value = payload[0];
|
917 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] << data->regs[u.bits.rs2];
|
918 |
|
|
data->regs[u.bits.rd] &= 0xFFFFFFFFLL;
|
919 |
|
|
if (data->regs[u.bits.rd] & (1LL << 31)) {
|
920 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_32;
|
921 |
|
|
}
|
922 |
|
|
data->npc = data->pc + 4;
|
923 |
|
|
}
|
924 |
|
|
};
|
925 |
|
|
|
926 |
|
|
/**
|
927 |
|
|
* @brief SLLIW is a shifts by a constant (RV64I).
|
928 |
|
|
*
|
929 |
|
|
* SLLIW, SRLIW, and SRAIW are RV64I-only instructions that operate on 32-bit
|
930 |
|
|
* values and produce signed 32-bit results.
|
931 |
|
|
* @exception Illegal_Instruction if imm[5] not equal to 0.
|
932 |
|
|
*/
|
933 |
|
|
class SLLIW : public IsaProcessor {
|
934 |
|
|
public:
|
935 |
|
|
SLLIW() : IsaProcessor("SLLIW", "0000000??????????001?????0011011") {}
|
936 |
|
|
|
937 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
938 |
|
|
ISA_I_type u;
|
939 |
|
|
u.value = payload[0];
|
940 |
|
|
uint32_t shamt = u.bits.imm & 0x1f;
|
941 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] << shamt;
|
942 |
|
|
data->regs[u.bits.rd] &= 0xFFFFFFFFLL;
|
943 |
|
|
if (data->regs[u.bits.rd] & (1LL << 31)) {
|
944 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_32;
|
945 |
|
|
}
|
946 |
|
|
if ((u.bits.imm >> 5) & 0x1) {
|
947 |
|
|
generateException(EXCEPTION_InstrIllegal, data);
|
948 |
|
|
}
|
949 |
|
|
data->npc = data->pc + 4;
|
950 |
|
|
}
|
951 |
|
|
};
|
952 |
|
|
|
953 |
|
|
/**
|
954 |
|
|
* @brief SRA arithmetic shift right
|
955 |
|
|
*/
|
956 |
|
|
class SRA : public IsaProcessor {
|
957 |
|
|
public:
|
958 |
|
|
SRA() : IsaProcessor("SRA", "0100000??????????101?????0110011") {}
|
959 |
|
|
|
960 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
961 |
|
|
ISA_R_type u;
|
962 |
|
|
u.value = payload[0];
|
963 |
|
|
data->regs[u.bits.rd] = static_cast<int64_t>(data->regs[u.bits.rs1])
|
964 |
|
|
>> (data->regs[u.bits.rs2] & 0x3F);
|
965 |
|
|
data->npc = data->pc + 4;
|
966 |
|
|
}
|
967 |
|
|
};
|
968 |
|
|
|
969 |
|
|
/**
|
970 |
|
|
* @brief SRAW 32-bits arithmetic shift right (RV64I)
|
971 |
|
|
*/
|
972 |
|
|
class SRAW : public IsaProcessor {
|
973 |
|
|
public:
|
974 |
|
|
SRAW() : IsaProcessor("SRAW", "0100000??????????101?????0111011") {}
|
975 |
|
|
|
976 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
977 |
|
|
ISA_R_type u;
|
978 |
|
|
u.value = payload[0];
|
979 |
|
|
int32_t t1 = static_cast<int32_t>(data->regs[u.bits.rs1]);
|
980 |
|
|
data->regs[u.bits.rd] =
|
981 |
|
|
static_cast<int64_t>(t1 >> (data->regs[u.bits.rs2] & 0x1F));
|
982 |
|
|
data->npc = data->pc + 4;
|
983 |
|
|
}
|
984 |
|
|
};
|
985 |
|
|
|
986 |
|
|
|
987 |
|
|
/**
|
988 |
|
|
* @brief SRAI is an arithmetic right shift.
|
989 |
|
|
*
|
990 |
|
|
* The original sign bit is copied into the vacanted upper bits.
|
991 |
|
|
*/
|
992 |
|
|
class SRAI : public IsaProcessor {
|
993 |
|
|
public:
|
994 |
|
|
SRAI() : IsaProcessor("SRAI", "010000???????????101?????0010011") {}
|
995 |
|
|
|
996 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
997 |
|
|
ISA_I_type u;
|
998 |
|
|
u.value = payload[0];
|
999 |
|
|
uint32_t shamt = u.bits.imm & 0x3f;
|
1000 |
|
|
data->regs[u.bits.rd] =
|
1001 |
|
|
static_cast<int64_t>(data->regs[u.bits.rs1]) >> shamt;
|
1002 |
|
|
data->npc = data->pc + 4;
|
1003 |
|
|
}
|
1004 |
|
|
};
|
1005 |
|
|
|
1006 |
|
|
/**
|
1007 |
|
|
* @brief SRAIW arithmetic right shift (RV64I)
|
1008 |
|
|
*/
|
1009 |
|
|
class SRAIW : public IsaProcessor {
|
1010 |
|
|
public:
|
1011 |
|
|
SRAIW() : IsaProcessor("SRAIW", "0100000??????????101?????0011011") {}
|
1012 |
|
|
|
1013 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1014 |
|
|
ISA_I_type u;
|
1015 |
|
|
u.value = payload[0];
|
1016 |
|
|
int32_t t1 = static_cast<int32_t>(data->regs[u.bits.rs1]);
|
1017 |
|
|
uint32_t shamt = u.bits.imm & 0x1f;
|
1018 |
|
|
data->regs[u.bits.rd] = static_cast<int64_t>(t1 >> shamt);
|
1019 |
|
|
if ((u.bits.imm >> 5) & 0x1) {
|
1020 |
|
|
generateException(EXCEPTION_InstrIllegal, data);
|
1021 |
|
|
}
|
1022 |
|
|
data->npc = data->pc + 4;
|
1023 |
|
|
}
|
1024 |
|
|
};
|
1025 |
|
|
|
1026 |
|
|
|
1027 |
|
|
/**
|
1028 |
|
|
* @brief SRL logical shift right
|
1029 |
|
|
*/
|
1030 |
|
|
class SRL : public IsaProcessor {
|
1031 |
|
|
public:
|
1032 |
|
|
SRL() : IsaProcessor("SRL", "0000000??????????101?????0110011") {}
|
1033 |
|
|
|
1034 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1035 |
|
|
ISA_R_type u;
|
1036 |
|
|
u.value = payload[0];
|
1037 |
|
|
data->regs[u.bits.rd] =
|
1038 |
|
|
data->regs[u.bits.rs1] >> (data->regs[u.bits.rs2] & 0x3F);
|
1039 |
|
|
data->npc = data->pc + 4;
|
1040 |
|
|
}
|
1041 |
|
|
};
|
1042 |
|
|
|
1043 |
|
|
/**
|
1044 |
|
|
* @brief SRLI is a logical right shift (zeros are shifted into the upper bits)
|
1045 |
|
|
*/
|
1046 |
|
|
class SRLI : public IsaProcessor {
|
1047 |
|
|
public:
|
1048 |
|
|
SRLI() : IsaProcessor("SRLI", "000000???????????101?????0010011") {}
|
1049 |
|
|
|
1050 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1051 |
|
|
ISA_I_type u;
|
1052 |
|
|
u.value = payload[0];
|
1053 |
|
|
uint32_t shamt = u.bits.imm & 0x3f;
|
1054 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] >> shamt;
|
1055 |
|
|
data->npc = data->pc + 4;
|
1056 |
|
|
}
|
1057 |
|
|
};
|
1058 |
|
|
|
1059 |
|
|
/**
|
1060 |
|
|
* @brief SRLIW logical right shift (RV64I)
|
1061 |
|
|
*/
|
1062 |
|
|
class SRLIW : public IsaProcessor {
|
1063 |
|
|
public:
|
1064 |
|
|
SRLIW() : IsaProcessor("SRLIW", "0000000??????????101?????0011011") {}
|
1065 |
|
|
|
1066 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1067 |
|
|
ISA_I_type u;
|
1068 |
|
|
u.value = payload[0];
|
1069 |
|
|
uint32_t shamt = u.bits.imm & 0x1f;
|
1070 |
|
|
data->regs[u.bits.rd] =
|
1071 |
|
|
static_cast<uint32_t>(data->regs[u.bits.rs1]) >> shamt;
|
1072 |
|
|
if ((u.bits.imm >> 5) & 0x1) {
|
1073 |
|
|
generateException(EXCEPTION_InstrIllegal, data);
|
1074 |
|
|
}
|
1075 |
|
|
data->npc = data->pc + 4;
|
1076 |
|
|
}
|
1077 |
|
|
};
|
1078 |
|
|
|
1079 |
|
|
/**
|
1080 |
|
|
* @brief SRLW is a right shifts by register defined value (RV64I).
|
1081 |
|
|
*/
|
1082 |
|
|
class SRLW : public IsaProcessor {
|
1083 |
|
|
public:
|
1084 |
|
|
SRLW() : IsaProcessor("SRLW", "0000000??????????101?????0111011") {}
|
1085 |
|
|
|
1086 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1087 |
|
|
ISA_R_type u;
|
1088 |
|
|
u.value = payload[0];
|
1089 |
|
|
data->regs[u.bits.rd] =
|
1090 |
|
|
data->regs[u.bits.rs1] >> data->regs[u.bits.rs2];
|
1091 |
|
|
data->regs[u.bits.rd] &= 0xFFFFFFFFLL;
|
1092 |
|
|
if (data->regs[u.bits.rd] & (1LL << 31)) {
|
1093 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_32;
|
1094 |
|
|
}
|
1095 |
|
|
data->npc = data->pc + 4;
|
1096 |
|
|
}
|
1097 |
|
|
};
|
1098 |
|
|
|
1099 |
|
|
/**
|
1100 |
|
|
* @brief STORE instructions (SD, SW, SH, SB)
|
1101 |
|
|
*
|
1102 |
|
|
* This instruction copies the value in register rs2 to memory.
|
1103 |
|
|
* The effective byte address is obtained by adding register rs1 to the
|
1104 |
|
|
* sign-extended 12-bit offset.
|
1105 |
|
|
* The SW, SH, and SB instructions store 32-bit, 16-bit, and 8-bit values
|
1106 |
|
|
* from the low bits of register rs2 to memory.
|
1107 |
|
|
*/
|
1108 |
|
|
class SD : public IsaProcessor {
|
1109 |
|
|
public:
|
1110 |
|
|
SD() : IsaProcessor("SD", "?????????????????011?????0100011") {}
|
1111 |
|
|
|
1112 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1113 |
|
|
Axi4TransactionType trans;
|
1114 |
|
|
ISA_S_type u;
|
1115 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
1116 |
|
|
u.value = payload[0];
|
1117 |
|
|
uint64_t off = (u.bits.imm11_5 << 5) | u.bits.imm4_0;
|
1118 |
|
|
if (off & 0x800) {
|
1119 |
|
|
off |= EXT_SIGN_12;
|
1120 |
|
|
}
|
1121 |
|
|
trans.action = MemAction_Write;
|
1122 |
|
|
trans.xsize = 8;
|
1123 |
|
|
trans.wstrb = (1 << trans.xsize) - 1;
|
1124 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
1125 |
|
|
trans.wpayload.b64[0] = data->regs[u.bits.rs2];
|
1126 |
|
|
if (trans.addr & 0x7) {
|
1127 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
1128 |
|
|
} else {
|
1129 |
|
|
data->ibus->b_transport(&trans);
|
1130 |
|
|
data->npc = data->pc + 4;
|
1131 |
|
|
}
|
1132 |
|
|
if (data->mem_trace_file) {
|
1133 |
|
|
char tstr[512];
|
1134 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
1135 |
|
|
"%08x: [%08x] <= %016" RV_PRI64 "x\n",
|
1136 |
|
|
static_cast<int>(data->pc),
|
1137 |
|
|
static_cast<int>(trans.addr), trans.wpayload.b64[0]);
|
1138 |
|
|
(*data->mem_trace_file) << tstr;
|
1139 |
|
|
data->mem_trace_file->flush();
|
1140 |
|
|
}
|
1141 |
|
|
}
|
1142 |
|
|
};
|
1143 |
|
|
|
1144 |
|
|
/**
|
1145 |
|
|
* @brief Store rs2[31:0] to memory.
|
1146 |
|
|
*/
|
1147 |
|
|
class SW : public IsaProcessor {
|
1148 |
|
|
public:
|
1149 |
|
|
SW() : IsaProcessor("SW", "?????????????????010?????0100011") {}
|
1150 |
|
|
|
1151 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1152 |
|
|
Axi4TransactionType trans;
|
1153 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
1154 |
|
|
trans.wpayload.b64[0] = 0;
|
1155 |
|
|
ISA_S_type u;
|
1156 |
|
|
u.value = payload[0];
|
1157 |
|
|
uint64_t off = (u.bits.imm11_5 << 5) | u.bits.imm4_0;
|
1158 |
|
|
if (off & 0x800) {
|
1159 |
|
|
off |= EXT_SIGN_12;
|
1160 |
|
|
}
|
1161 |
|
|
trans.action = MemAction_Write;
|
1162 |
|
|
trans.xsize = 4;
|
1163 |
|
|
trans.wstrb = (1 << trans.xsize) - 1;
|
1164 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
1165 |
|
|
trans.wpayload.b64[0] = data->regs[u.bits.rs2];
|
1166 |
|
|
if (trans.addr & 0x3) {
|
1167 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
1168 |
|
|
} else {
|
1169 |
|
|
data->ibus->b_transport(&trans);
|
1170 |
|
|
data->npc = data->pc + 4;
|
1171 |
|
|
}
|
1172 |
|
|
if (data->mem_trace_file) {
|
1173 |
|
|
char tstr[512];
|
1174 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
1175 |
|
|
"%08x: [%08x] <= %016" RV_PRI64 "x\n",
|
1176 |
|
|
static_cast<int>(data->pc),
|
1177 |
|
|
static_cast<int>(trans.addr),
|
1178 |
|
|
static_cast<uint64_t>(trans.wpayload.b32[0]));
|
1179 |
|
|
(*data->mem_trace_file) << tstr;
|
1180 |
|
|
data->mem_trace_file->flush();
|
1181 |
|
|
}
|
1182 |
|
|
}
|
1183 |
|
|
};
|
1184 |
|
|
|
1185 |
|
|
/**
|
1186 |
|
|
* @brief Store rs2[15:0] to memory.
|
1187 |
|
|
*/
|
1188 |
|
|
class SH : public IsaProcessor {
|
1189 |
|
|
public:
|
1190 |
|
|
SH() : IsaProcessor("SH", "?????????????????001?????0100011") {}
|
1191 |
|
|
|
1192 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1193 |
|
|
Axi4TransactionType trans;
|
1194 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
1195 |
|
|
trans.wpayload.b64[0] = 0;
|
1196 |
|
|
ISA_S_type u;
|
1197 |
|
|
u.value = payload[0];
|
1198 |
|
|
uint64_t off = (u.bits.imm11_5 << 5) | u.bits.imm4_0;
|
1199 |
|
|
if (off & 0x800) {
|
1200 |
|
|
off |= EXT_SIGN_12;
|
1201 |
|
|
}
|
1202 |
|
|
trans.action = MemAction_Write;
|
1203 |
|
|
trans.xsize = 2;
|
1204 |
|
|
trans.wstrb = (1 << trans.xsize) - 1;
|
1205 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
1206 |
|
|
trans.wpayload.b64[0] = data->regs[u.bits.rs2] & 0xFFFF;
|
1207 |
|
|
if (trans.addr & 0x1) {
|
1208 |
|
|
generateException(EXCEPTION_LoadMisalign, data);
|
1209 |
|
|
} else {
|
1210 |
|
|
data->ibus->b_transport(&trans);
|
1211 |
|
|
data->npc = data->pc + 4;
|
1212 |
|
|
}
|
1213 |
|
|
if (data->mem_trace_file) {
|
1214 |
|
|
char tstr[512];
|
1215 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
1216 |
|
|
"%08x: [%08x] <= %016" RV_PRI64 "x\n",
|
1217 |
|
|
static_cast<int>(data->pc),
|
1218 |
|
|
static_cast<int>(trans.addr),
|
1219 |
|
|
static_cast<uint64_t>(trans.wpayload.b16[0]));
|
1220 |
|
|
(*data->mem_trace_file) << tstr;
|
1221 |
|
|
data->mem_trace_file->flush();
|
1222 |
|
|
}
|
1223 |
|
|
}
|
1224 |
|
|
};
|
1225 |
|
|
|
1226 |
|
|
/**
|
1227 |
|
|
* @brief Store rs2[7:0] to memory.
|
1228 |
|
|
*/
|
1229 |
|
|
class SB : public IsaProcessor {
|
1230 |
|
|
public:
|
1231 |
|
|
SB() : IsaProcessor("SB", "?????????????????000?????0100011") {}
|
1232 |
|
|
|
1233 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1234 |
|
|
Axi4TransactionType trans;
|
1235 |
|
|
trans.source_idx = CFG_NASTI_MASTER_CACHED;
|
1236 |
|
|
trans.wpayload.b64[0] = 0;
|
1237 |
|
|
ISA_S_type u;
|
1238 |
|
|
u.value = payload[0];
|
1239 |
|
|
uint64_t off = (u.bits.imm11_5 << 5) | u.bits.imm4_0;
|
1240 |
|
|
if (off & 0x800) {
|
1241 |
|
|
off |= EXT_SIGN_12;
|
1242 |
|
|
}
|
1243 |
|
|
trans.action = MemAction_Write;
|
1244 |
|
|
trans.xsize = 1;
|
1245 |
|
|
trans.wstrb = (1 << trans.xsize) - 1;
|
1246 |
|
|
trans.addr = data->regs[u.bits.rs1] + off;
|
1247 |
|
|
trans.wpayload.b64[0] = data->regs[u.bits.rs2] & 0xFF;
|
1248 |
|
|
data->ibus->b_transport(&trans);
|
1249 |
|
|
data->npc = data->pc + 4;
|
1250 |
|
|
if (data->mem_trace_file) {
|
1251 |
|
|
char tstr[512];
|
1252 |
|
|
RISCV_sprintf(tstr, sizeof(tstr),
|
1253 |
|
|
"%08x: [%08x] <= %016" RV_PRI64 "x\n",
|
1254 |
|
|
static_cast<int>(data->pc),
|
1255 |
|
|
static_cast<int>(trans.addr),
|
1256 |
|
|
static_cast<uint64_t>(trans.wpayload.b8[0]));
|
1257 |
|
|
(*data->mem_trace_file) << tstr;
|
1258 |
|
|
data->mem_trace_file->flush();
|
1259 |
|
|
}
|
1260 |
|
|
}
|
1261 |
|
|
};
|
1262 |
|
|
|
1263 |
|
|
/**
|
1264 |
|
|
* @brief Subtruction. Overflows are ignored
|
1265 |
|
|
*/
|
1266 |
|
|
class SUB : public IsaProcessor {
|
1267 |
|
|
public:
|
1268 |
|
|
SUB() : IsaProcessor("SUB", "0100000??????????000?????0110011") {}
|
1269 |
|
|
|
1270 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1271 |
|
|
ISA_R_type u;
|
1272 |
|
|
u.value = payload[0];
|
1273 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] - data->regs[u.bits.rs2];
|
1274 |
|
|
data->npc = data->pc + 4;
|
1275 |
|
|
}
|
1276 |
|
|
};
|
1277 |
|
|
|
1278 |
|
|
/**
|
1279 |
|
|
* @brief Substruct registers with sign extending (RV64I)
|
1280 |
|
|
*
|
1281 |
|
|
* SUBW is RV64I-only instructions that are defined analogously to
|
1282 |
|
|
* SUB but operate on 32-bit values and produce signed 32-bit results.
|
1283 |
|
|
* Overflows are ignored, and the low 32-bits of the result is sign-extended
|
1284 |
|
|
* to 64-bits and written to the destination register.
|
1285 |
|
|
*/
|
1286 |
|
|
class SUBW : public IsaProcessor {
|
1287 |
|
|
public:
|
1288 |
|
|
SUBW() : IsaProcessor("SUBW", "0100000??????????000?????0111011") {}
|
1289 |
|
|
|
1290 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1291 |
|
|
ISA_R_type u;
|
1292 |
|
|
u.value = payload[0];
|
1293 |
|
|
|
1294 |
|
|
data->regs[u.bits.rd] =
|
1295 |
|
|
(data->regs[u.bits.rs1] - data->regs[u.bits.rs2]) & 0xFFFFFFFFLL;
|
1296 |
|
|
if (data->regs[u.bits.rd] & (1LL << 31)) {
|
1297 |
|
|
data->regs[u.bits.rd] |= EXT_SIGN_32;
|
1298 |
|
|
}
|
1299 |
|
|
data->npc = data->pc + 4;
|
1300 |
|
|
}
|
1301 |
|
|
};
|
1302 |
|
|
|
1303 |
|
|
/**
|
1304 |
|
|
* @brief XOR bitwise operation
|
1305 |
|
|
*/
|
1306 |
|
|
class XOR : public IsaProcessor {
|
1307 |
|
|
public:
|
1308 |
|
|
XOR() : IsaProcessor("XOR", "0000000??????????100?????0110011") {}
|
1309 |
|
|
|
1310 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1311 |
|
|
ISA_R_type u;
|
1312 |
|
|
u.value = payload[0];
|
1313 |
|
|
data->regs[u.bits.rd] =
|
1314 |
|
|
data->regs[u.bits.rs1] ^ data->regs[u.bits.rs2];
|
1315 |
|
|
data->npc = data->pc + 4;
|
1316 |
|
|
}
|
1317 |
|
|
};
|
1318 |
|
|
|
1319 |
|
|
/**
|
1320 |
|
|
* @brief XOR on register rs1 and the sign-extended 12-bit immediate.
|
1321 |
|
|
*
|
1322 |
|
|
* XORI rd, rs1, -1 performs a bitwise logical inversion of register rs1
|
1323 |
|
|
* (assembler pseudo-instruction NOT rd, rs).
|
1324 |
|
|
*/
|
1325 |
|
|
class XORI : public IsaProcessor {
|
1326 |
|
|
public:
|
1327 |
|
|
XORI() : IsaProcessor("XORI", "?????????????????100?????0010011") {}
|
1328 |
|
|
|
1329 |
|
|
virtual void exec(uint32_t *payload, CpuContextType *data) {
|
1330 |
|
|
ISA_I_type u;
|
1331 |
|
|
u.value = payload[0];
|
1332 |
|
|
|
1333 |
|
|
uint64_t imm = u.bits.imm;
|
1334 |
|
|
if (imm & 0x800) {
|
1335 |
|
|
imm |= EXT_SIGN_12;
|
1336 |
|
|
}
|
1337 |
|
|
data->regs[u.bits.rd] = data->regs[u.bits.rs1] ^ imm;
|
1338 |
|
|
data->npc = data->pc + 4;
|
1339 |
|
|
}
|
1340 |
|
|
};
|
1341 |
|
|
|
1342 |
|
|
void addIsaUserRV64I(CpuContextType *data, AttributeType *out) {
|
1343 |
|
|
addSupportedInstruction(new ADD, out);
|
1344 |
|
|
addSupportedInstruction(new ADDI, out);
|
1345 |
|
|
addSupportedInstruction(new ADDIW, out);
|
1346 |
|
|
addSupportedInstruction(new ADDW, out);
|
1347 |
|
|
addSupportedInstruction(new AND, out);
|
1348 |
|
|
addSupportedInstruction(new ANDI, out);
|
1349 |
|
|
addSupportedInstruction(new AUIPC, out);
|
1350 |
|
|
addSupportedInstruction(new BEQ, out);
|
1351 |
|
|
addSupportedInstruction(new BGE, out);
|
1352 |
|
|
addSupportedInstruction(new BGEU, out);
|
1353 |
|
|
addSupportedInstruction(new BLT, out);
|
1354 |
|
|
addSupportedInstruction(new BLTU, out);
|
1355 |
|
|
addSupportedInstruction(new BNE, out);
|
1356 |
|
|
addSupportedInstruction(new JAL, out);
|
1357 |
|
|
addSupportedInstruction(new JALR, out);
|
1358 |
|
|
addSupportedInstruction(new LD, out);
|
1359 |
|
|
addSupportedInstruction(new LW, out);
|
1360 |
|
|
addSupportedInstruction(new LWU, out);
|
1361 |
|
|
addSupportedInstruction(new LH, out);
|
1362 |
|
|
addSupportedInstruction(new LHU, out);
|
1363 |
|
|
addSupportedInstruction(new LB, out);
|
1364 |
|
|
addSupportedInstruction(new LBU, out);
|
1365 |
|
|
addSupportedInstruction(new LUI, out);
|
1366 |
|
|
addSupportedInstruction(new OR, out);
|
1367 |
|
|
addSupportedInstruction(new ORI, out);
|
1368 |
|
|
addSupportedInstruction(new SLL, out);
|
1369 |
|
|
addSupportedInstruction(new SLLI, out);
|
1370 |
|
|
addSupportedInstruction(new SLLIW, out);
|
1371 |
|
|
addSupportedInstruction(new SLLW, out);
|
1372 |
|
|
addSupportedInstruction(new SLT, out);
|
1373 |
|
|
addSupportedInstruction(new SLTI, out);
|
1374 |
|
|
addSupportedInstruction(new SLTU, out);
|
1375 |
|
|
addSupportedInstruction(new SLTIU, out);
|
1376 |
|
|
addSupportedInstruction(new SRA, out);
|
1377 |
|
|
addSupportedInstruction(new SRAI, out);
|
1378 |
|
|
addSupportedInstruction(new SRAIW, out);
|
1379 |
|
|
addSupportedInstruction(new SRAW, out);
|
1380 |
|
|
addSupportedInstruction(new SRL, out);
|
1381 |
|
|
addSupportedInstruction(new SRLI, out);
|
1382 |
|
|
addSupportedInstruction(new SRLIW, out);
|
1383 |
|
|
addSupportedInstruction(new SRLW, out);
|
1384 |
|
|
addSupportedInstruction(new SUB, out);
|
1385 |
|
|
addSupportedInstruction(new SUBW, out);
|
1386 |
|
|
addSupportedInstruction(new SD, out);
|
1387 |
|
|
addSupportedInstruction(new SW, out);
|
1388 |
|
|
addSupportedInstruction(new SH, out);
|
1389 |
|
|
addSupportedInstruction(new SB, out);
|
1390 |
|
|
addSupportedInstruction(new XOR, out);
|
1391 |
|
|
addSupportedInstruction(new XORI, out);
|
1392 |
|
|
|
1393 |
|
|
/** Base[XLEN-1:XLEN-2]
|
1394 |
|
|
* 1 = 32
|
1395 |
|
|
* 2 = 64
|
1396 |
|
|
* 3 = 128
|
1397 |
|
|
*/
|
1398 |
|
|
data->csr[CSR_misa] = 0x8000000000000000LL;
|
1399 |
|
|
data->csr[CSR_misa] |= (1LL << ('I' - 'A'));
|
1400 |
|
|
}
|
1401 |
|
|
|
1402 |
|
|
/**
|
1403 |
|
|
* When a trap is taken, the stack is pushed to the left and PRV is set to the
|
1404 |
|
|
* privilege mode of the activated trap handler with
|
1405 |
|
|
* IE=0.
|
1406 |
|
|
*
|
1407 |
|
|
* By default, all traps at any privilege level are handled in machine mode,
|
1408 |
|
|
* though a machine-mode * handler can quickly redirect traps back to the
|
1409 |
|
|
* appropriate level using mrts and mrth instructions (Section 3.2.2).
|
1410 |
|
|
* To increase performance, implementations can provide individual read/write
|
1411 |
|
|
* bits within mtdeleg to indicate that certain traps should be processed
|
1412 |
|
|
* directly by a lower privilege level.
|
1413 |
|
|
*
|
1414 |
|
|
* The machine trap delegation register (mtdeleg) is an XLEN-bit read/write
|
1415 |
|
|
* register that must be implemented, but which can contain a read-only value
|
1416 |
|
|
* of zero, indicating that hardware will always direct all traps to machine
|
1417 |
|
|
* mode.
|
1418 |
|
|
*/
|
1419 |
|
|
void generateException(uint64_t code, CpuContextType *data) {
|
1420 |
|
|
csr_mcause_type cause;
|
1421 |
|
|
cause.value = 0;
|
1422 |
|
|
cause.bits.irq = 0;
|
1423 |
|
|
cause.bits.code = code;
|
1424 |
|
|
data->csr[CSR_mcause] = cause.value;
|
1425 |
|
|
data->exception |= 1LL << code;
|
1426 |
|
|
}
|
1427 |
|
|
|
1428 |
|
|
void generateInterrupt(uint64_t code, CpuContextType *data) {
|
1429 |
|
|
csr_mcause_type cause;
|
1430 |
|
|
cause.value = 0;
|
1431 |
|
|
cause.bits.irq = 1;
|
1432 |
|
|
cause.bits.code = code;
|
1433 |
|
|
data->csr[CSR_mcause] = cause.value;
|
1434 |
|
|
data->interrupt = 1;
|
1435 |
|
|
}
|
1436 |
|
|
|
1437 |
|
|
} // namespace debugger
|