2d72cbec41
. add cpufeature detection of both . use it for both ipc and kernelcall traps, using a register for call number . SYSENTER/SYSCALL does not save any context, therefore userland has to save it . to accomodate multiple kernel entry/exit types, the entry type is recorded in the process struct. hitherto all types were interrupt (soft int, exception, hard int); now SYSENTER/SYSCALL is new, with the difference that context is not fully restored from proc struct when running the process again. this can't be done as some information is missing. . complication: cases in which the kernel has to fully change process context (i.e. sigreturn). in that case the exit type is changed from SYSENTER/SYSEXIT to soft-int (i.e. iret) and context is fully restored from the proc struct. this does mean the PC and SP must change, as the sysenter/sysexit userland code will otherwise try to restore its own context. this is true in the sigreturn case. . override all usage by setting libc_ipc=1
60 lines
2.3 KiB
C
60 lines
2.3 KiB
C
/* Interrupt numbers and hardware vectors. */
|
|
|
|
#ifndef _INTERRUPT_H
|
|
#define _INTERRUPT_H
|
|
|
|
#if defined(__i386__)
|
|
|
|
/* 8259A interrupt controller ports. */
|
|
#define INT_CTL 0x20 /* I/O port for interrupt controller */
|
|
#define INT_CTLMASK 0x21 /* setting bits in this port disables ints */
|
|
#define INT2_CTL 0xA0 /* I/O port for second interrupt controller */
|
|
#define INT2_CTLMASK 0xA1 /* setting bits in this port disables ints */
|
|
|
|
/* Magic numbers for interrupt controller. */
|
|
#define END_OF_INT 0x20 /* code used to re-enable after an interrupt */
|
|
|
|
#define IRQ0_VECTOR 0x50 /* nice vectors to relocate IRQ0-7 to */
|
|
#define IRQ8_VECTOR 0x70 /* no need to move IRQ8-15 */
|
|
|
|
/* Interrupt vectors defined/reserved by processor. */
|
|
#define DIVIDE_VECTOR 0 /* divide error */
|
|
#define DEBUG_VECTOR 1 /* single step (trace) */
|
|
#define NMI_VECTOR 2 /* non-maskable interrupt */
|
|
#define BREAKPOINT_VECTOR 3 /* software breakpoint */
|
|
#define OVERFLOW_VECTOR 4 /* from INTO */
|
|
|
|
/* Fixed system call vector. */
|
|
#define KERN_CALL_VECTOR_ORIG 32 /* system calls are made with int SYSVEC */
|
|
#define IPC_VECTOR_ORIG 33 /* interrupt vector for ipc */
|
|
#define KERN_CALL_VECTOR_UM 34 /* user-mapped equivalent */
|
|
#define IPC_VECTOR_UM 35 /* user-mapped equivalent */
|
|
|
|
/* Hardware interrupt numbers. */
|
|
#ifndef USE_APIC
|
|
#define NR_IRQ_VECTORS 16
|
|
#else
|
|
#define NR_IRQ_VECTORS 64
|
|
#endif
|
|
#define CLOCK_IRQ 0
|
|
#define KEYBOARD_IRQ 1
|
|
#define CASCADE_IRQ 2 /* cascade enable for 2nd AT controller */
|
|
#define ETHER_IRQ 3 /* default ethernet interrupt vector */
|
|
#define SECONDARY_IRQ 3 /* RS232 interrupt vector for port 2 */
|
|
#define RS232_IRQ 4 /* RS232 interrupt vector for port 1 */
|
|
#define XT_WINI_IRQ 5 /* xt winchester */
|
|
#define FLOPPY_IRQ 6 /* floppy disk */
|
|
#define PRINTER_IRQ 7
|
|
#define SPURIOUS_IRQ 7
|
|
#define CMOS_CLOCK_IRQ 8
|
|
#define KBD_AUX_IRQ 12 /* AUX (PS/2 mouse) port in kbd controller */
|
|
#define AT_WINI_0_IRQ 14 /* at winchester controller 0 */
|
|
#define AT_WINI_1_IRQ 15 /* at winchester controller 1 */
|
|
|
|
#define VECTOR(irq) \
|
|
(((irq) < 8 ? IRQ0_VECTOR : IRQ8_VECTOR) + ((irq) & 0x07))
|
|
|
|
#endif /* (CHIP == INTEL) */
|
|
|
|
#endif /* _INTERRUPT_H */
|