applies clang-format
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@ -1,9 +1,9 @@
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#include "semihosting.h"
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#include "semihosting.h"
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#include <cstdint>
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#include <map>
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#include <iss/vm_types.h>
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#include <stdexcept>
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#include <chrono>
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#include <chrono>
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#include <cstdint>
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#include <iss/vm_types.h>
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#include <map>
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#include <stdexcept>
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// explanation of syscalls can be found at https://github.com/SpinalHDL/openocd_riscv/blob/riscv_spinal/src/target/semihosting_common.h
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// explanation of syscalls can be found at https://github.com/SpinalHDL/openocd_riscv/blob/riscv_spinal/src/target/semihosting_common.h
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const char* SYS_OPEN_MODES_STRS[] = {"r", "rb", "r+", "r+b", "w", "wb", "w+", "w+b", "a", "ab", "a+", "a+b"};
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const char* SYS_OPEN_MODES_STRS[] = {"r", "rb", "r+", "r+b", "w", "wb", "w+", "w+b", "a", "ab", "a+", "a+b"};
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@ -15,7 +15,9 @@ template <typename T> T sh_read_field(iss::arch_if* arch_if_ptr, T addr, int len
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if(res != iss::Ok) {
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if(res != iss::Ok) {
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return 0; // TODO THROW ERROR
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return 0; // TODO THROW ERROR
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} else return static_cast<T>(bytes[0]) | (static_cast<T>(bytes[1]) << 8) | (static_cast<T>(bytes[2]) << 16) | (static_cast<T>(bytes[3]) << 24);
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} else
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return static_cast<T>(bytes[0]) | (static_cast<T>(bytes[1]) << 8) | (static_cast<T>(bytes[2]) << 16) |
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(static_cast<T>(bytes[3]) << 24);
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}
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}
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template <typename T> std::string sh_read_string(iss::arch_if* arch_if_ptr, T addr, T str_len) {
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template <typename T> std::string sh_read_string(iss::arch_if* arch_if_ptr, T addr, T str_len) {
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@ -27,7 +29,6 @@ template <typename T> std::string sh_read_string(iss::arch_if* arch_if_ptr, T ad
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return str;
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return str;
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}
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}
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template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arch_if_ptr, T* call_number, T* parameter) {
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template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arch_if_ptr, T* call_number, T* parameter) {
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static std::map<T, FILE*> openFiles;
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static std::map<T, FILE*> openFiles;
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static T file_count = 3;
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static T file_count = 3;
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@ -80,7 +81,8 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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auto file = openFiles[file_handle];
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auto file = openFiles[file_handle];
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size_t currentPos = ftell(file);
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size_t currentPos = ftell(file);
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if (currentPos < 0) throw std::runtime_error("SYS_FLEN negative value");
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if(currentPos < 0)
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throw std::runtime_error("SYS_FLEN negative value");
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fseek(file, 0, SEEK_END);
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fseek(file, 0, SEEK_END);
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size_t length = ftell(file);
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size_t length = ftell(file);
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fseek(file, currentPos, SEEK_SET);
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fseek(file, currentPos, SEEK_SET);
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@ -138,7 +140,6 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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openFiles[file_handle] = file;
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openFiles[file_handle] = file;
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*call_number = file_handle;
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*call_number = file_handle;
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break;
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break;
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}
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}
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case semihosting_syscalls::SYS_READ: {
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case semihosting_syscalls::SYS_READ: {
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T file_handle = sh_read_field<T>(arch_if_ptr, (*parameter) + 4);
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T file_handle = sh_read_field<T>(arch_if_ptr, (*parameter) + 4);
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@ -149,12 +150,10 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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std::vector<uint8_t> buffer(count);
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std::vector<uint8_t> buffer(count);
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size_t num_read = 0;
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size_t num_read = 0;
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if (file == stdin)
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if(file == stdin) {
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{
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// when reading from stdin: mimic behaviour from read syscall
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// when reading from stdin: mimic behaviour from read syscall
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// and return on newline.
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// and return on newline.
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while (num_read < count)
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while(num_read < count) {
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{
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char c = fgetc(file);
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char c = fgetc(file);
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buffer[num_read] = c;
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buffer[num_read] = c;
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num_read++;
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num_read++;
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@ -172,7 +171,6 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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}
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}
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*call_number = count - num_read;
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*call_number = count - num_read;
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break;
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break;
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}
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}
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case semihosting_syscalls::SYS_READC: {
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case semihosting_syscalls::SYS_READC: {
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uint8_t character = getchar();
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uint8_t character = getchar();
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@ -188,7 +186,8 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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T path_len = sh_read_field<T>(arch_if_ptr, (*parameter) + 4);
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T path_len = sh_read_field<T>(arch_if_ptr, (*parameter) + 4);
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std::string path_str = sh_read_string<T>(arch_if_ptr, path_str_addr, path_len);
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std::string path_str = sh_read_string<T>(arch_if_ptr, path_str_addr, path_len);
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if(remove(path_str.c_str())<0) *call_number = -1;
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if(remove(path_str.c_str()) < 0)
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*call_number = -1;
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break;
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break;
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}
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}
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case semihosting_syscalls::SYS_RENAME: {
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case semihosting_syscalls::SYS_RENAME: {
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auto file = openFiles[file_handle];
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auto file = openFiles[file_handle];
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int retval = fseek(file, pos, SEEK_SET);
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int retval = fseek(file, pos, SEEK_SET);
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if(retval<0) throw std::runtime_error("SYS_SEEK negative return value");
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if(retval < 0)
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throw std::runtime_error("SYS_SEEK negative return value");
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break;
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break;
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}
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}
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@ -244,7 +244,8 @@ template <typename T> void semihosting_callback<T>::operator()(iss::arch_if* arc
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for(int i = 0; i < buffer_len; i++) {
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for(int i = 0; i < buffer_len; i++) {
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uint8_t character = filename[i];
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uint8_t character = filename[i];
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auto res = arch_if_ptr->write(iss::address_type::PHYSICAL, iss::access_type::DEBUG_READ, 0, (*parameter) + i, 1, &character);
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auto res = arch_if_ptr->write(iss::address_type::PHYSICAL, iss::access_type::DEBUG_READ, 0, (*parameter) + i, 1, &character);
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if(res != iss::Ok) return;
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if(res != iss::Ok)
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return;
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}
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}
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break;
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break;
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}
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}
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#ifndef _SEMIHOSTING_H_
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#ifndef _SEMIHOSTING_H_
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#define _SEMIHOSTING_H_
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#define _SEMIHOSTING_H_
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#include <iss/arch_if.h>
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#include <functional>
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#include <chrono>
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#include <chrono>
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#include <functional>
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#include <iss/arch_if.h>
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/*
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/*
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* According to:
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* According to:
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* "Semihosting for AArch32 and AArch64, Release 2.0"
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* "Semihosting for AArch32 and AArch64, Release 2.0"
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@ -52,7 +52,8 @@ enum class semihosting_syscalls {
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template <typename T> struct semihosting_callback {
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template <typename T> struct semihosting_callback {
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std::chrono::high_resolution_clock::time_point timeVar;
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std::chrono::high_resolution_clock::time_point timeVar;
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semihosting_callback(): timeVar(std::chrono::high_resolution_clock::now()) {}
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semihosting_callback()
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: timeVar(std::chrono::high_resolution_clock::now()) {}
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void operator()(iss::arch_if* arch_if_ptr, T* call_number, T* parameter);
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void operator()(iss::arch_if* arch_if_ptr, T* call_number, T* parameter);
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};
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};
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