cpu.h File Reference

#include <mos/mos_global.h>
#include <mos/types.h>

Include dependency graph for cpu.h:

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

Go to the source code of this file.

Classes
struct	platform_regs_t

Macros
#define	read_csr(reg)
#define	write_csr(reg, val)
#define	make_satp(mode, asid, ppn)
#define	SATP_MODE_SV39   8
#define	SATP_MODE_SV48   9
#define	SATP_MODE_SV57   10
#define	SSTATUS_SIE   BIT(1)
#define	SSTATUS_SPIE   BIT(5)
#define	SSTATUS_SPP   BIT(8)
#define	SSTATUS_SUM   BIT(18)
#define	SSTATUS_FS_OFF   0
#define	SSTATUS_FS_INITIAL   BIT(13)
#define	SSTATUS_FS_CLEAN   BIT(14)
#define	SSTATUS_FS_DIRTY   (BIT(13) | BIT(14))
#define	SIE_SEIE   BIT(9)
#define	SIE_STIE   BIT(5)
#define	SIE_SSIE   BIT(1)

Functions
	MOS_STATIC_ASSERT (sizeof(platform_regs_t)==264, "please also change cpu/interrupt.S")
void	riscv64_trap_exit (platform_regs_t *regs)

Variables
const char	__riscv64_trap_entry []
const char	__riscv64_usermode_trap_entry []

Macro Definition Documentation

read_csr

#define read_csr

(

reg

)

Value:

statement_expr(reg_t, { asm volatile("csrr %0, " #reg : "=r"(retval)); })

Definition at line 23 of file cpu.h.

Referenced by do_save_fp_context(), platform_interrupt_disable(), platform_interrupt_enable(), platform_return_to_userspace(), platform_startup_early(), and riscv64_trap_handler().

write_csr

#define write_csr	(		reg,
			val )

Value:

__asm__ volatile("csrw " #reg ", %0" ::"r"(val))

Definition at line 24 of file cpu.h.

Referenced by do_restore_fp_context(), platform_interrupt_disable(), platform_interrupt_enable(), platform_return_to_userspace(), platform_startup_early(), platform_switch_mm(), and riscv64_trap_handler().

make_satp

#define make_satp	(		mode,
			asid,
			ppn )

Value:

((u64) (mode) << 60 | ((u64) (asid) << 44) | (ppn))

Definition at line 26 of file cpu.h.

Referenced by platform_switch_mm().

SATP_MODE_SV39

#define SATP_MODE_SV39   8

Definition at line 28 of file cpu.h.

SATP_MODE_SV48

#define SATP_MODE_SV48   9

Definition at line 29 of file cpu.h.

Referenced by platform_switch_mm().

SATP_MODE_SV57

#define SATP_MODE_SV57   10

Definition at line 30 of file cpu.h.

SSTATUS_SIE

#define SSTATUS_SIE   BIT(1)

Definition at line 32 of file cpu.h.

Referenced by platform_interrupt_disable(), and platform_interrupt_enable().

SSTATUS_SPIE

#define SSTATUS_SPIE   BIT(5)

Definition at line 33 of file cpu.h.

Referenced by platform_return_to_userspace().

SSTATUS_SPP

#define SSTATUS_SPP   BIT(8)

Definition at line 34 of file cpu.h.

Referenced by riscv64_trap_handler().

SSTATUS_SUM

#define SSTATUS_SUM   BIT(18)

Definition at line 35 of file cpu.h.

Referenced by platform_return_to_userspace(), and platform_startup_early().

SSTATUS_FS_OFF

#define SSTATUS_FS_OFF   0

Definition at line 37 of file cpu.h.

SSTATUS_FS_INITIAL

#define SSTATUS_FS_INITIAL   BIT(13)

Definition at line 38 of file cpu.h.

Referenced by platform_startup_early().

SSTATUS_FS_CLEAN

#define SSTATUS_FS_CLEAN   BIT(14)

Definition at line 39 of file cpu.h.

SSTATUS_FS_DIRTY

#define SSTATUS_FS_DIRTY   (BIT(13) | BIT(14))

Definition at line 40 of file cpu.h.

SIE_SEIE

#define SIE_SEIE   BIT(9)

Definition at line 42 of file cpu.h.

Referenced by platform_startup_early().

SIE_STIE

#define SIE_STIE   BIT(5)

Definition at line 43 of file cpu.h.

Referenced by platform_startup_early().

SIE_SSIE

#define SIE_SSIE   BIT(1)

Definition at line 44 of file cpu.h.

Referenced by platform_startup_early().

Function Documentation

MOS_STATIC_ASSERT()

MOS_STATIC_ASSERT	(	sizeof(platform_regs_t)	= =264,
		"please also change cpu/interrupt.S"	)

riscv64_trap_exit()

void riscv64_trap_exit ( platform_regs_t * regs )

extern

Referenced by platform_return_to_userspace(), and riscv64_trap_handler().

Variable Documentation

__riscv64_trap_entry

const char __riscv64_trap_entry[]

extern

Referenced by platform_startup_early(), and riscv64_trap_handler().

__riscv64_usermode_trap_entry

const char __riscv64_usermode_trap_entry[]

extern

Referenced by platform_return_to_userspace().