cpu.h File Reference

#include <core/system.h>

Go to the source code of this file.

Data Structures
struct	aarch64_regs
	What an exception saves on the kernel stack (cpu/vectors.S): the context it interrupted. More...
struct	arch_cpu
	A CPU's aarch64 state (struct cpu's arch). More...

Macros
#define	PSTATE_EL0t   0x0
#define	PSTATE_EL1h   0x5
#define	PSTATE_MODE   0xF
#define	PSTATE_DAIF   (0xF << 6)
#define	REGS_USER(r)
#define	read_sysreg(r)
#define	write_sysreg(r, v)
#define	isb()
#define	dsb()

Functions
static struct cpu *	curcpu (void)
	Returns the running CPU's struct cpu, which TPIDR_EL1, the register meant for it, holds.

Macro Definition Documentation

dsb

#define dsb

(

)

Value:

asm volatile("dsb sy" ::: "memory")

Definition at line 46 of file cpu.h.

isb

#define isb

(

)

Value:

asm volatile("isb" ::: "memory")

Definition at line 45 of file cpu.h.

Referenced by aarch64_init(), fpen(), pmap_switch(), and timer_setup().

PSTATE_DAIF

#define PSTATE_DAIF   (0xF << 6)

Definition at line 26 of file cpu.h.

PSTATE_EL0t

#define PSTATE_EL0t   0x0

Definition at line 23 of file cpu.h.

PSTATE_EL1h

#define PSTATE_EL1h   0x5

Definition at line 24 of file cpu.h.

PSTATE_MODE

#define PSTATE_MODE   0xF

Definition at line 25 of file cpu.h.

read_sysreg

#define read_sysreg

(

r

)

Value:

    ({                                   \
    uint64_t __v;                                           \
    asm volatile("mrs %0, " #r : "=r"(__v));                \
    __v;                                                    \
})

Definition at line 33 of file cpu.h.

Referenced by aarch64_init(), abort(), arch_cycles(), arch_rtime_ns(), curcpu(), dump(), and timer_setup().

REGS_USER

#define REGS_USER

(

r

)

Value:

(((r)->pstate & PSTATE_MODE) == PSTATE_EL0t)

Definition at line 29 of file cpu.h.

Referenced by aarch64_irq(), aarch64_return_to_user(), abort(), sched_tick(), and sync_dispatch().

write_sysreg

#define write_sysreg	(		r,
			v )

Value:

    do {                             \
    uint64_t __v = (uint64_t) (v);                          \
    asm volatile("msr " #r ", %0" :: "r"(__v));             \
} while (0)

Definition at line 39 of file cpu.h.

Referenced by aarch64_init(), fpen(), pmap_switch(), timer_irq(), and timer_setup().

Function Documentation

curcpu()

struct cpu * curcpu ( void )

inlinestatic

Returns the running CPU's struct cpu, which TPIDR_EL1, the register meant for it, holds.

Definition at line 62 of file cpu.h.

References read_sysreg.