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91 lines
3.1 KiB
91 lines
3.1 KiB
#include <riscv/extension.h>
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#include <riscv/sim.h>
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struct : public arg_t {
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std::string to_string(insn_t insn) const { return xpr_name[insn.rd()]; }
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} xrd;
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struct : public arg_t {
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std::string to_string(insn_t insn) const { return xpr_name[insn.rs1()]; }
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} xrs1;
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struct : public arg_t {
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std::string to_string(insn_t insn) const { return xpr_name[insn.rs2()]; }
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} xrs2;
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struct : public arg_t {
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std::string to_string(insn_t insn) const {
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return std::to_string((int)insn.shamt());
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}
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} shamt;
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static reg_t do_nop4([[maybe_unused]] processor_t *p,
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[[maybe_unused]] insn_t insn, reg_t pc) {
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return pc + 4;
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}
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// dummy extension that uses the same prefix as standard zba extension
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struct xslliuw_dummy_t : public extension_t {
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const char *name() const { return "dummyslliuw"; }
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xslliuw_dummy_t() {}
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std::vector<insn_desc_t> get_instructions(const processor_t &) {
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std::vector<insn_desc_t> insns;
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insns.push_back(insn_desc_t{MATCH_SLLI_UW, MASK_SLLI_UW, do_nop4, do_nop4,
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do_nop4, do_nop4, do_nop4, do_nop4, do_nop4,
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do_nop4});
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return insns;
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}
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std::vector<disasm_insn_t *> get_disasms(const processor_t *) {
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std::vector<disasm_insn_t *> insns;
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insns.push_back(new disasm_insn_t("dummy_slliuw", MATCH_SLLI_UW,
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MASK_SLLI_UW, {&xrd, &xrs1, &shamt}));
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return insns;
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}
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};
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REGISTER_EXTENSION(dummyslliuw, []() { return new xslliuw_dummy_t; })
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// Copied from spike main.
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// TODO: This should really be provided in libriscv
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static std::vector<std::pair<reg_t, abstract_mem_t *>>
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make_mems(const std::vector<mem_cfg_t> &layout) {
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std::vector<std::pair<reg_t, abstract_mem_t *>> mems;
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mems.reserve(layout.size());
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for (const auto &cfg : layout) {
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mems.push_back(std::make_pair(cfg.get_base(), new mem_t(cfg.get_size())));
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}
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return mems;
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}
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int main(int argc, char **argv) {
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cfg_t cfg;
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cfg.isa = "RV64IMAFDCV_xdummyslliuw";
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std::vector<device_factory_sargs_t> plugin_devices;
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if (argc != 3) {
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std::cerr << "Error: invalid arguments\n";
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exit(1);
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}
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std::vector<std::string> htif_args{argv[1] /* pk */, argv[2] /* executable */};
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debug_module_config_t dm_config = {.progbufsize = 2,
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.max_sba_data_width = 0,
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.require_authentication = false,
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.abstract_rti = 0,
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.support_hasel = true,
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.support_abstract_csr_access = true,
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.support_abstract_fpr_access = true,
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.support_haltgroups = true,
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.support_impebreak = true};
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std::vector<std::pair<reg_t, abstract_mem_t *>> mems =
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make_mems(cfg.mem_layout);
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sim_t sim(&cfg, false, mems, plugin_devices, htif_args, dm_config,
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nullptr, // log_path
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true, // dtb_enabled
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nullptr, // dtb_file
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false, // socket_enabled
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nullptr, // cmd_file
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std::nullopt); // instruction_limit
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sim.run();
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}
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