struct : public arg_t {
std::string to_string(insn_t insn) const {
- return std::string("0(") + xpr_name[insn.rs1()] + ')';
+ return std::string("(") + xpr_name[insn.rs1()] + ')';
}
} amo_address;
}
} jump_target;
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return xpr_name[insn.rvc_rs1()];
+ }
+} rvc_rs1;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return xpr_name[insn.rvc_rs2()];
+ }
+} rvc_rs2;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return xpr_name[insn.rvc_rs1s()];
+ }
+} rvc_rs1s;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return xpr_name[insn.rvc_rs2s()];
+ }
+} rvc_rs2s;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return xpr_name[X_SP];
+ }
+} rvc_sp;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_imm());
+ }
+} rvc_imm;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_addi4spn_imm());
+ }
+} rvc_addi4spn_imm;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_addi16sp_imm());
+ }
+} rvc_addi16sp_imm;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_lwsp_imm());
+ }
+} rvc_lwsp_imm;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)(insn.rvc_imm() & 0x3f));
+ }
+} rvc_shamt;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ std::stringstream s;
+ s << std::hex << "0x" << (uint32_t)insn.rvc_imm();
+ return s.str();
+ }
+} rvc_uimm;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_lwsp_imm()) + '(' + xpr_name[X_SP] + ')';
+ }
+} rvc_lwsp_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_ldsp_imm()) + '(' + xpr_name[X_SP] + ')';
+ }
+} rvc_ldsp_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_swsp_imm()) + '(' + xpr_name[X_SP] + ')';
+ }
+} rvc_swsp_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_sdsp_imm()) + '(' + xpr_name[X_SP] + ')';
+ }
+} rvc_sdsp_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_lw_imm()) + '(' + xpr_name[insn.rvc_rs1s()] + ')';
+ }
+} rvc_lw_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ return std::to_string((int)insn.rvc_ld_imm()) + '(' + xpr_name[insn.rvc_rs1s()] + ')';
+ }
+} rvc_ld_address;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ std::stringstream s;
+ int32_t target = insn.rvc_b_imm();
+ char sign = target >= 0 ? '+' : '-';
+ s << "pc " << sign << ' ' << abs(target);
+ return s.str();
+ }
+} rvc_branch_target;
+
+struct : public arg_t {
+ std::string to_string(insn_t insn) const {
+ std::stringstream s;
+ int32_t target = insn.rvc_j_imm();
+ char sign = target >= 0 ? '+' : '-';
+ s << "pc " << sign << ' ' << abs(target);
+ return s.str();
+ }
+} rvc_jump_target;
+
std::string disassembler_t::disassemble(insn_t insn)
{
const disasm_insn_t* disasm_insn = lookup(insn);
const uint32_t mask_rs2 = 0x1fUL << 20;
const uint32_t mask_imm = 0xfffUL << 20;
const uint32_t match_imm_1 = 1UL << 20;
+ const uint32_t mask_rvc_rs2 = 0x1fUL << 2;
+ const uint32_t mask_rvc_imm = mask_rvc_rs2 | 0x1000UL;
#define DECLARE_INSN(code, match, mask) \
const uint32_t match_##code = match; \
DEFINE_FXTYPE(flt_d);
DEFINE_FXTYPE(fle_d);
+ DISASM_INSN("ebreak", c_add, mask_rd | mask_rvc_rs2, {});
+ add_insn(new disasm_insn_t("ret", match_c_li | match_rd_ra, mask_c_li | mask_rd | mask_rvc_imm, {}));
+ DISASM_INSN("jr", c_li, mask_rvc_imm, {&rvc_rs1});
+ DISASM_INSN("jalr", c_lui, mask_rvc_imm, {&rvc_rs1});
+ DISASM_INSN("nop", c_addi, mask_rd | mask_rvc_imm, {});
+ DISASM_INSN("addi", c_addi16sp, mask_rd, {&rvc_sp, &rvc_sp, &rvc_addi16sp_imm});
+ DISASM_INSN("addi", c_addi4spn, 0, {&rvc_rs1s, &rvc_sp, &rvc_addi4spn_imm});
+ DISASM_INSN("li", c_li, 0, {&xrd, &rvc_imm});
+ DISASM_INSN("lui", c_lui, 0, {&xrd, &rvc_uimm});
+ DISASM_INSN("addi", c_addi, 0, {&xrd, &xrd, &rvc_imm});
+ DISASM_INSN("addiw", c_addiw, 0, {&xrd, &xrd, &rvc_imm});
+ DISASM_INSN("slli", c_slli, 0, {&xrd, &rvc_shamt});
+ DISASM_INSN("mv", c_mv, 0, {&xrd, &rvc_rs2});
+ DISASM_INSN("add", c_add, 0, {&xrd, &xrd, &rvc_rs2});
+ DISASM_INSN("addw", c_addw, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("sub", c_sub, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("subw", c_subw, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("and", c_and, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("or", c_or, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("xor", c_xor, 0, {&rvc_rs1s, &rvc_rs1s, &rvc_rs2s});
+ DISASM_INSN("lw", c_lwsp, 0, {&xrd, &rvc_lwsp_address});
+ DISASM_INSN("flw", c_flwsp, 0, {&xrd, &rvc_lwsp_address});
+ DISASM_INSN("sw", c_swsp, 0, {&rvc_rs2, &rvc_swsp_address});
+ DISASM_INSN("fsw", c_fswsp, 0, {&rvc_rs2, &rvc_swsp_address});
+ DISASM_INSN("lw", c_lw, 0, {&rvc_rs2s, &rvc_lw_address});
+ DISASM_INSN("flw", c_flw, 0, {&rvc_rs2s, &rvc_lw_address});
+ DISASM_INSN("sw", c_sw, 0, {&rvc_rs2s, &rvc_lw_address});
+ DISASM_INSN("fsw", c_fsw, 0, {&rvc_rs2s, &rvc_lw_address});
+ DISASM_INSN("beqz", c_beqz, 0, {&rvc_rs1s, &rvc_branch_target});
+ DISASM_INSN("bnez", c_bnez, 0, {&rvc_rs1s, &rvc_branch_target});
+ DISASM_INSN("j", c_j, 0, {&rvc_jump_target});
+
// provide a default disassembly for all instructions as a fallback
#define DECLARE_INSN(code, match, mask) \
add_insn(new disasm_insn_t(#code " (args unknown)", match, mask, {}));