Ec Class Reference

Public Member Functions
ALWAYS_INLINE NORETURN void	make_current ()

Static Public Member Functions
HOT static NORETURN void	ret_user_sysexit ()
static NORETURN void	ret_user_iret () asm("ret_user_iret")
static NORETURN void	idle ()
static void	root_setup (mword)
HOT NORETURN static REGPARM_1 void	syscall_handler (uint8 a) asm("syscall_handler")
	System call handler. More...
static ALWAYS_INLINE void *	operator new (size_t)
static ALWAYS_INLINE void	operator delete (void *)

Public Attributes
Ec *	next

Static Public Attributes
static Ec *	current

Member Function Documentation

syscall_handler()

void Ec::syscall_handler ( uint8  a )

static

System call handler.

Parameters

[in]

a

Value of the al register before the system call

{
    // Get access to registers stored during entering the system - see
    // entry_sysenter in entry.S
    Sys_regs * r = current->sys_regs();
    Syscall_numbers number = static_cast<Syscall_numbers> (a);
 
    switch (number) {
        case sys_print: {
            // Tisk řetězce na sériovou linku
            char *data = reinterpret_cast<char*>(r->esi);
            unsigned len = r->edi;
            for (unsigned i = 0; i < len; i++)
                printf("%c", data[i]);
            break;
        }
        case sys_sum: {
            // Naprosto nepotřebné systémové volání na sečtení dvou čísel
            int first_number = r->esi;
            int second_number = r->edi;
            r->eax = first_number + second_number;
            break;
        }
        // TODO: Add your system calls here
        default:
            printf ("unknown syscall %d\n", number);
            break;
    };
 
    ret_user_sysexit();
}

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The documentation for this class was generated from the following files:

• include/ec.h
• src/ec.cc
• src/ec_syscall.cc