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#include <euler/syscall.hpp>
#include <string>
#include <vector>
extern "C" void __euler_do_syscall(
uint64_t &rax, uint64_t &rdi, uint64_t &rsi, uint64_t &rdx);
namespace euler::syscall {
encoded_color encode_color(
uint8_t r, uint8_t g, uint8_t b) {
uint64_t rax = 0;
uint64_t rdi = (uint32_t)r | ((uint32_t)g << 8) | ((uint32_t)b << 16);
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (encoded_color)(rax & 0xffffffff);
}
void get_framebuffer(
encoded_color *&buffer_out, uint32_t &width_out,
uint32_t &height_out, uint32_t &pitch_out) {
uint64_t rax = 1;
uint64_t rdi;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
buffer_out = (encoded_color *)rax;
width_out = rdi & 0xffffffff;
height_out = rdi >> 32;
pitch_out = rsi & 0xffffffff;
}
stream_result open_file(
const std::string &file_path, bool allow_creation,
bool only_allow_creation, stream_handle &handle_out) {
uint64_t rax = 2;
uint64_t rdi = (uint64_t)file_path.data();
uint64_t rsi = file_path.size();
uint64_t rdx =
( allow_creation ? 0x1 : 0x0) |
(only_allow_creation ? 0x2 : 0x0);
__euler_do_syscall(rax, rdi, rsi, rdx);
handle_out = rdi;
return (stream_result)rax;
}
[[noreturn]] void end_this_thread(int32_t exit_code) {
uint64_t rax = 3;
uint64_t rdi = (uint32_t)exit_code;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
__builtin_unreachable();
}
void *get_new_pages(uint64_t n_pages) {
uint64_t rax = 4;
uint64_t rdi = n_pages;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (void *)rax;
}
std::variant<mouse_packet, key_packet> get_input_packet() {
uint64_t rax = 5;
uint64_t rdi;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
if (rax & 0x80)
return (mouse_packet){
. left_button_down = (rax & 0x01) != 0,
. right_button_down = (rax & 0x02) != 0,
.middle_button_down = (rax & 0x04) != 0,
.x_changed = (int16_t)(rdi & 0xffff),
.y_changed = (int16_t)(rsi & 0xffff)
};
return (key_packet){
.was_key_up_event = (rdi & 0x40000) != 0,
. num_lock = (rdi & 0x20000) != 0,
. caps_lock = (rdi & 0x10000) != 0,
. right_win = (rdi & 0x8000) != 0,
. left_win = (rdi & 0x4000) != 0,
. right_alt = (rdi & 0x2000) != 0,
. left_alt = (rdi & 0x1000) != 0,
. right_ctrl = (rdi & 0x800) != 0,
. left_ctrl = (rdi & 0x400) != 0,
. right_shift = (rdi & 0x200) != 0,
. left_shift = (rdi & 0x100) != 0,
. key_code = (uint8_t)(rdi & 0xff)
};
}
void create_private_socket(
stream_handle &end_1_out, stream_handle &end_2_out) {
uint64_t rax = 6;
uint64_t rdi;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
end_1_out = rax;
end_2_out = rdi;
}
stream_result create_socket_listener(
const std::string &id, listener_handle &handle_out) {
uint64_t rax = 7;
uint64_t rdi = (uint64_t)id.data();
uint64_t rsi = id.size();
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
handle_out = rdi;
return (stream_result)rax;
}
void stop_socket_listener(listener_handle handle) {
uint64_t rax = 8;
uint64_t rdi = handle;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
}
stream_result accept_socket_connection(
listener_handle listener, stream_handle &stream_out) {
uint64_t rax = 9;
uint64_t rdi = listener;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
stream_out = rdi;
return (stream_result)rax;
}
stream_result connect_to_socket(
const std::string &id, stream_handle &handle_out) {
uint64_t rax = 10;
uint64_t rdi = (uint64_t)id.data();
uint64_t rsi = id.size();
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
handle_out = rdi;
return (stream_result)rax;
}
void close_stream(stream_handle handle) {
uint64_t rax = 11;
uint64_t rdi = handle;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
}
stream_result seek_stream(
stream_handle handle, seek_from from, int64_t offset) {
uint64_t rax = 12;
uint64_t rdi = (uint64_t)handle;
uint64_t rsi = (uint8_t)from;
uint64_t rdx = (uint64_t)offset;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (stream_result)rax;
}
stream_result read_from_stream(
stream_handle handle, uint64_t bytes, void *into) {
uint64_t rax = 13;
uint64_t rdi = (uint64_t)handle;
uint64_t rsi = bytes;
uint64_t rdx = (uint64_t)into;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (stream_result)rax;
}
stream_result write_to_stream(
stream_handle handle, uint64_t bytes, const void *from) {
uint64_t rax = 14;
uint64_t rdi = (uint64_t)handle;
uint64_t rsi = bytes;
uint64_t rdx = (uint64_t)from;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (stream_result)rax;
}
stream_result get_stream_length(
stream_handle handle, uint64_t &length_out) {
uint64_t rax = 15;
uint64_t rdi = (uint64_t)handle;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
length_out = rdi;
return (stream_result)rax;
}
stream_result start_process(
const std::string &file_path,
const std::vector<std::pair<std::string, std::string>> &environment_variables,
const std::vector<std::pair<stream_handle, stream_result>> &gifted_streams,
process_handle &handle_out) {
std::vector<uint64_t> ev_structs(environment_variables.size() * 4);
for (size_t i = 0; i < environment_variables.size(); ++i) {
ev_structs[i * 4] = environment_variables[i]. first.size();
ev_structs[i * 4 + 1] = (uint64_t)environment_variables[i]. first.data();
ev_structs[i * 4 + 2] = environment_variables[i].second.size();
ev_structs[i * 4 + 3] = (uint64_t)environment_variables[i].second.data();
}
std::vector<uint64_t> gs_structs(gifted_streams.size() * 2);
for (size_t i = 0; i < environment_variables.size(); ++i) {
gs_structs[i * 2] = (uint64_t)gifted_streams[i]. first;
gs_structs[i * 2 + 1] = (uint64_t)gifted_streams[i].second;
}
uint64_t psi_struct[] = {
file_path.size(), (uint64_t) file_path.data(),
environment_variables.size(), (uint64_t)ev_structs.data(),
gifted_streams.size(), (uint64_t)gs_structs.data()
};
uint64_t rax = 16;
uint64_t rdi = (uint64_t)psi_struct;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
handle_out = rdi;
return (stream_result)rax;
}
[[noreturn]] void end_this_process(int32_t exit_code) {
uint64_t rax = 17;
uint64_t rdi = (uint32_t)exit_code;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
__builtin_unreachable();
}
stream_result set_stream_length(
stream_handle handle, uint64_t new_length) {
uint64_t rax = 18;
uint64_t rdi = (uint64_t)handle;
uint64_t rsi = new_length;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
return (stream_result)rax;
}
stream_result get_other_end_process_handle(
stream_handle stream, process_handle &process_out) {
uint64_t rax = 19;
uint64_t rdi = (uint64_t)stream;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
process_out = (process_handle)rdi;
return (stream_result)rax;
}
//entry_point must not return
void start_thread(void (*entry_point)(uint64_t), uint64_t arg) {
uint64_t rax = 20;
uint64_t rdi = (uint64_t)entry_point;
uint64_t rsi = arg;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
}
//entry_point must not return
void start_thread(void (*entry_point)()) {
uint64_t rax = 20;
uint64_t rdi = (uint64_t)entry_point;
uint64_t rsi = 0;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
}
//return value is number of bytes cleared
uint64_t clear_socket_read_queue(stream_handle handle) {
uint64_t rax = 21;
uint64_t rdi = handle;
uint64_t rsi;
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
return rax;
}
//this function has a race condition if the variable is changed
//or unset by another thread between the two syscalls.
std::optional<std::string> try_get_environment_variable(
const std::string &name) {
uint64_t rax = 22;
uint64_t rdi = (uint64_t)name.data();
uint64_t rsi = name.size();
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
if (rax == (uint64_t)-1)
return {};
std::string s;
s.resize(rax);
rax = 23;
rdi = (uint64_t)name.data();
rsi = name.size();
rdx = (uint64_t)s.data();
__euler_do_syscall(rax, rdi, rsi, rdx);
//do i need to tell gcc that s is modified?
return s;
}
void set_thread_name(const std::string &name) {
uint64_t rax = 24;
uint64_t rdi = (uint64_t)name.data();
uint64_t rsi = name.size();
uint64_t rdx;
__euler_do_syscall(rax, rdi, rsi, rdx);
}
}
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