#include <string.h>
#include <stdint.h>
#include <arch/encoding.h>

Include dependency graph for vm.h:

This graph shows which files directly or indirectly include this file:

Macros
#define	EXTRACT_FIELD(val, which) (((val) & (which)) / ((which) & ~((which)-1)))

#define	INSERT_FIELD(val, which, fieldval) (((val) & ~(which)) \| ((fieldval) * ((which) & ~((which)-1))))

#define	DEFINE_MPRV_READ_FLAGS(name, type, insn, flags)

#define	DEFINE_MPRV_READ(name, type, insn) DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV)

#define	DEFINE_MPRV_READ_MXR(name, type, insn) DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV \| MSTATUS_MXR)

#define	DEFINE_MPRV_WRITE(name, type, insn)

Functions
void	mstatus_init (void)

Macro Definition Documentation

◆ DEFINE_MPRV_READ

#define DEFINE_MPRV_READ	(	name,
		type,
		insn
	)	DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV)

Definition at line 30 of file vm.h.

◆ DEFINE_MPRV_READ_FLAGS

#define DEFINE_MPRV_READ_FLAGS	(	name,
		type,
		insn,
		flags
	)

Value:

        static inline type name(type *p);                               \
        static inline type name(type *p)                                \
        {                                                               \
                size_t mprv = flags;                                    \
                type value;                                             \
                asm (                                                   \
                        "csrs           mstatus, %1\n"                  \
                        STRINGIFY(insn) " %0, 0(%2)\n"                  \
                        "csrc           mstatus, %1\n"                  \
                        : "=&r"(value) : "r"(mprv), "r"(p) : "memory"   \
                );                                                      \
                return value;                                           \
        }

Definition at line 15 of file vm.h.

◆ DEFINE_MPRV_READ_MXR

#define DEFINE_MPRV_READ_MXR	(	name,
		type,
		insn
	)	DEFINE_MPRV_READ_FLAGS(name, type, insn, MSTATUS_MPRV \| MSTATUS_MXR)

Definition at line 33 of file vm.h.

◆ DEFINE_MPRV_WRITE

#define DEFINE_MPRV_WRITE	(	name,
		type,
		insn
	)

Value:

        static inline void name(type *p, type value);                   \
        static inline void name(type *p, type value)                    \
        {                                                               \
                size_t mprv = MSTATUS_MPRV;                             \
                asm (                                                   \
                        "csrs           mstatus, %0\n"                  \
                        STRINGIFY(insn) " %1, 0(%2)\n"                  \
                        "csrc           mstatus, %0\n"                  \
                        :: "r"(mprv), "r"(value), "r"(p) : "memory"     \
                );                                                      \
        }

Definition at line 36 of file vm.h.

◆ EXTRACT_FIELD

#define EXTRACT_FIELD	(	val,
		which
	)	(((val) & (which)) / ((which) & ~((which)-1)))

Definition at line 10 of file vm.h.

◆ INSERT_FIELD

#define INSERT_FIELD	(	val,
		which,
		fieldval
	)	(((val) & ~(which)) \| ((fieldval) * ((which) & ~((which)-1))))

Definition at line 11 of file vm.h.

Function Documentation

◆ mstatus_init()

void mstatus_init ( void )

Definition at line 29 of file virtual_memory.c.

References delegate, MIP_MTIP, MIP_SSIP, MIP_STIP, and supports_extension().

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Macros

Functions