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#include <hilbert/kernel/terminal.hpp>
using namespace hilbert::kernel;
struct [[gnu::packed]] exception_info_t {
uint64_t rax;
uint64_t rbx;
uint64_t rcx;
uint64_t rdx;
uint64_t rdi;
uint64_t rsi;
uint64_t rbp;
uint64_t rsp;
uint64_t r8;
uint64_t r9;
uint64_t r10;
uint64_t r11;
uint64_t r12;
uint64_t r13;
uint64_t r14;
uint64_t r15;
uint64_t cr2;
uint64_t cr3;
uint64_t rip;
uint64_t rflags;
uint64_t error;
uint8_t has_error;//0 or 1
uint8_t exception_number;
};
extern exception_info_t exception_info;
const char *exception_types[] = {
"division error",
"",
"non-maskable interrupt",
"",
"",
"",
"invalid opcode",
"",
"double fault (uh oh)",
"",
"",
"",
"stack fault",
"general protection fault",
"page fault",
""
};
const char *flag_names[] = {
" cf",
"",
" pf",
"",
" af",
"",
" zf",
" sf",
" tf",
" if",
" df",
" of",
"",
"",
" nt",
" md"
};
void print_line(const char *r1, const char *r2, uint64_t r1v, uint64_t r2v) {
terminal::put_string_sz("\n ");
terminal::put_string_sz(r1);
terminal::put_string_sz(": 0x");
terminal::put_int_hex(r1v, 16);
terminal::put_string_sz(" ");
terminal::put_string_sz(r2);
terminal::put_string_sz(": 0x");
terminal::put_int_hex(r2v, 16);
}
extern "C" [[noreturn]] void print_exception() {
terminal::put_string_sz("exception handler:\n type: ");
terminal::put_string_sz(exception_types[exception_info.exception_number]);
terminal::put_string_sz(" (0x");
terminal::put_int_hex(exception_info.exception_number, 2);
terminal::put_char(')');
if (exception_info.has_error == 1) {
terminal::put_string_sz("\n error code: 0x");
terminal::put_int_hex(exception_info.error, 16);
}
terminal::put_string_sz("\n flags:");
if (exception_info.rflags == 0)
terminal::put_string_sz(" [none]");
else
for (int i = 0; i < 16; ++i)
if (((exception_info.rflags >> i) & 1) == 1)
terminal::put_string_sz(flag_names[i]);
if (exception_info.exception_number == 0x0e) {
terminal::put_string_sz("\n cr2: 0x");
terminal::put_int_hex(exception_info.cr2, 16);
}
print_line("cr3", "rip", exception_info.cr3, exception_info.rip);
print_line("rax", "rbx", exception_info.rax, exception_info.rbx);
print_line("rcx", "rdx", exception_info.rcx, exception_info.rdx);
print_line("rdi", "rsi", exception_info.rdi, exception_info.rsi);
print_line("rbp", "rsp", exception_info.rbp, exception_info.rsp);
print_line("r8 ", "r9 ", exception_info.r8 , exception_info.r9 );
print_line("r10", "r11", exception_info.r10, exception_info.r11);
print_line("r12", "r13", exception_info.r12, exception_info.r13);
print_line("r14", "r15", exception_info.r14, exception_info.r15);
while (1)
asm ("hlt");
}
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