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adds riscv_hart_common and signature output

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Eyck-Alexander Jentzsch
2024-03-19 11:02:03 +01:00
parent 1e6a0086e9
commit a1ebd83d2a
5 changed files with 113 additions and 27 deletions
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60
src/iss/arch/riscv_hart_common.h
View File

@ -36,7 +36,12 @@
#define _RISCV_HART_COMMON
#include "iss/arch_if.h"
#include "iss/log_categories.h"
#include <cstdint>
#include <elfio/elfio.hpp>
#include <fmt/format.h>
#include <string>
#include <unordered_map>
namespace iss {
namespace arch {
@ -296,6 +301,61 @@ inline void write_reg_uint32(uint64_t offs, uint32_t& reg, const uint8_t* const
break;
}
}
struct riscv_hart_common {
riscv_hart_common(){};
~riscv_hart_common(){};
std::unordered_map<std::string, uint64_t> symbol_table;
std::unordered_map<std::string, uint64_t> get_sym_table(std::string name) {
if(!symbol_table.empty())
return symbol_table;
FILE* fp = fopen(name.c_str(), "r");
if(fp) {
std::array<char, 5> buf;
auto n = fread(buf.data(), 1, 4, fp);
fclose(fp);
if(n != 4)
throw std::runtime_error("input file has insufficient size");
buf[4] = 0;
if(strcmp(buf.data() + 1, "ELF") == 0) {
// Create elfio reader
ELFIO::elfio reader;
// Load ELF data
if(!reader.load(name))
throw std::runtime_error("could not process elf file");
// check elf properties
if(reader.get_type() != ET_EXEC)
throw std::runtime_error("wrong elf type in file");
if(reader.get_machine() != EM_RISCV)
throw std::runtime_error("wrong elf machine in file");
const auto sym_sec = reader.sections[".symtab"];
if(SHT_SYMTAB == sym_sec->get_type() || SHT_DYNSYM == sym_sec->get_type()) {
ELFIO::symbol_section_accessor symbols(reader, sym_sec);
auto sym_no = symbols.get_symbols_num();
std::string name;
ELFIO::Elf64_Addr value = 0;
ELFIO::Elf_Xword size = 0;
unsigned char bind = 0;
unsigned char type = 0;
ELFIO::Elf_Half section = 0;
unsigned char other = 0;
for(auto i = 0U; i < sym_no; ++i) {
symbols.get_symbol(i, name, value, size, bind, type, section, other);
if(name != "") {
this->symbol_table[name] = value;
#ifndef NDEBUG
LOG(DEBUG) << "Found Symbol " << name;
#endif
}
}
}
return symbol_table;
}
throw std::runtime_error(fmt::format("memory load file {} is not a valid elf file", name));
} else
throw std::runtime_error(fmt::format("memory load file not found, check if {} is a valid file", name));
};
};
} // namespace arch
} // namespace iss

33
src/iss/arch/riscv_hart_m_p.h
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@ -40,6 +40,7 @@
#include "iss/log_categories.h"
#include "iss/vm_if.h"
#include "riscv_hart_common.h"
#include <stdexcept>
#ifndef FMT_HEADER_ONLY
#define FMT_HEADER_ONLY
#endif
@ -68,7 +69,7 @@
namespace iss {
namespace arch {
template <typename BASE, features_e FEAT = FEAT_NONE> class riscv_hart_m_p : public BASE {
template <typename BASE, features_e FEAT = FEAT_NONE> class riscv_hart_m_p : public BASE, public riscv_hart_common {
protected:
const std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
const std::array<const char*, 16> trap_str = {{""
@ -326,6 +327,8 @@ protected:
unsigned get_reg_size(unsigned num) override { return traits<BASE>::reg_bit_widths[num]; }
std::unordered_map<std::string, uint64_t> get_symbol_table(std::string name) override { return arch.get_sym_table(name); }
riscv_hart_m_p<BASE, FEAT>& arch;
};
@ -570,6 +573,12 @@ riscv_hart_m_p<BASE, FEAT>::riscv_hart_m_p(feature_config cfg)
}
template <typename BASE, features_e FEAT> std::pair<uint64_t, bool> riscv_hart_m_p<BASE, FEAT>::load_file(std::string name, int type) {
get_sym_table(name);
try {
tohost = symbol_table.at("tohost");
fromhost = symbol_table.at("fromhost");
} catch(std::out_of_range& e) {
}
FILE* fp = fopen(name.c_str(), "r");
if(fp) {
std::array<char, 5> buf;
@ -604,27 +613,7 @@ template <typename BASE, features_e FEAT> std::pair<uint64_t, bool> riscv_hart_m
}
}
for(const auto sec : reader.sections) {
if(sec->get_name() == ".symtab") {
if(SHT_SYMTAB == sec->get_type() || SHT_DYNSYM == sec->get_type()) {
ELFIO::symbol_section_accessor symbols(reader, sec);
auto sym_no = symbols.get_symbols_num();
std::string name;
ELFIO::Elf64_Addr value = 0;
ELFIO::Elf_Xword size = 0;
unsigned char bind = 0;
unsigned char type = 0;
ELFIO::Elf_Half section = 0;
unsigned char other = 0;
for(auto i = 0U; i < sym_no; ++i) {
symbols.get_symbol(i, name, value, size, bind, type, section, other);
if(name == "tohost") {
tohost = value;
} else if(name == "fromhost") {
fromhost = value;
}
}
}
} else if(sec->get_name() == ".tohost") {
if(sec->get_name() == ".tohost") {
tohost = sec->get_address();
fromhost = tohost + 0x40;
}

4
src/iss/arch/riscv_hart_msu_vp.h
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@ -68,7 +68,7 @@
namespace iss {
namespace arch {
template <typename BASE> class riscv_hart_msu_vp : public BASE {
template <typename BASE> class riscv_hart_msu_vp : public BASE, public riscv_hart_common {
protected:
const std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
const std::array<const char*, 16> trap_str = {{""
@ -377,6 +377,8 @@ protected:
unsigned get_reg_size(unsigned num) override { return traits<BASE>::reg_bit_widths[num]; }
std::unordered_map<std::string, uint64_t> get_symbol_table(std::string name) override { return arch.get_sym_table(name); }
riscv_hart_msu_vp<BASE>& arch;
};

4
src/iss/arch/riscv_hart_mu_p.h
View File

@ -68,7 +68,7 @@
namespace iss {
namespace arch {
template <typename BASE, features_e FEAT = FEAT_NONE> class riscv_hart_mu_p : public BASE {
template <typename BASE, features_e FEAT = FEAT_NONE> class riscv_hart_mu_p : public BASE, public riscv_hart_common {
protected:
const std::array<const char, 4> lvl = {{'U', 'S', 'H', 'M'}};
const std::array<const char*, 16> trap_str = {{""
@ -353,6 +353,8 @@ protected:
unsigned get_reg_size(unsigned num) override { return traits<BASE>::reg_bit_widths[num]; }
std::unordered_map<std::string, uint64_t> get_symbol_table(std::string name) override { return arch.get_sym_table(name); }
riscv_hart_mu_p<BASE, FEAT>& arch;
};