392 lines
10 KiB
C
392 lines
10 KiB
C
/****************************************************************************
|
|
* arch/arm64/include/syscall.h
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/* This file should never be included directly but, rather, only indirectly
|
|
* through include/syscall.h or include/sys/sycall.h
|
|
*/
|
|
|
|
#ifndef __ARCH_ARM64_INCLUDE_SYSCALL_H
|
|
#define __ARCH_ARM64_INCLUDE_SYSCALL_H
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#ifndef __ASSEMBLY__
|
|
# include <stdint.h>
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Prototypes
|
|
****************************************************************************/
|
|
|
|
#define SYS_syscall 0x00
|
|
#define SYS_smhcall 0xf000
|
|
|
|
/* Configuration ************************************************************/
|
|
|
|
/* This logic uses three system calls {0,1,2} for context switching and one
|
|
* for the syscall return.
|
|
* So a minimum of four syscall values must be reserved.
|
|
* If CONFIG_BUILD_PROTECTED is defined, then four more syscall values must
|
|
* be reserved.
|
|
*/
|
|
|
|
#ifndef CONFIG_BUILD_FLAT
|
|
# define CONFIG_SYS_RESERVED 8
|
|
#else
|
|
# define CONFIG_SYS_RESERVED 4
|
|
#endif
|
|
|
|
/* system calls */
|
|
|
|
/* SYS call 0:
|
|
*
|
|
* int up_saveusercontext(void *saveregs);
|
|
*/
|
|
|
|
#define SYS_save_context (0)
|
|
|
|
/* SYS call 1:
|
|
*
|
|
* void arm64_fullcontextrestore(void *restoreregs) noreturn_function;
|
|
*/
|
|
|
|
#define SYS_restore_context (1)
|
|
|
|
/* SYS call 2:
|
|
*
|
|
* void arm64_switchcontext(void **saveregs, void *restoreregs);
|
|
*/
|
|
|
|
#define SYS_switch_context (2)
|
|
|
|
#ifdef CONFIG_LIB_SYSCALL
|
|
/* SYS call 3:
|
|
*
|
|
* void arm_syscall_return(void);
|
|
*/
|
|
|
|
#define SYS_syscall_return (3)
|
|
#endif /* CONFIG_LIB_SYSCALL */
|
|
|
|
#ifndef CONFIG_BUILD_FLAT
|
|
/* SYS call 4:
|
|
*
|
|
* void up_task_start(main_t taskentry, int argc, char *argv[])
|
|
* noreturn_function;
|
|
*/
|
|
|
|
#define SYS_task_start (4)
|
|
|
|
/* SYS call 5:
|
|
*
|
|
* void up_pthread_start((pthread_startroutine_t startup,
|
|
* pthread_startroutine_t entrypt, pthread_addr_t arg)
|
|
* noreturn_function
|
|
*/
|
|
|
|
#define SYS_pthread_start (5)
|
|
|
|
/* SYS call 6:
|
|
*
|
|
* void signal_handler(_sa_sigaction_t sighand,
|
|
* int signo, siginfo_t *info,
|
|
* void *ucontext);
|
|
*/
|
|
|
|
#define SYS_signal_handler (6)
|
|
|
|
/* SYS call 7:
|
|
*
|
|
* void signal_handler_return(void);
|
|
*/
|
|
|
|
#define SYS_signal_handler_return (7)
|
|
#endif /* !CONFIG_BUILD_FLAT */
|
|
|
|
#define ARM_SMCC_RES_A0 (0)
|
|
#define ARM_SMCC_RES_A1 (1)
|
|
#define ARM_SMCC_RES_A2 (2)
|
|
#define ARM_SMCC_RES_A3 (3)
|
|
#define ARM_SMCC_RES_A4 (4)
|
|
#define ARM_SMCC_RES_A5 (5)
|
|
#define ARM_SMCC_RES_A6 (6)
|
|
#define ARM_SMCC_RES_A7 (7)
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
/****************************************************************************
|
|
* Public Types
|
|
****************************************************************************/
|
|
|
|
/* Result from SMC/HVC call
|
|
* a0-a7 result values from registers 0 to 7
|
|
*/
|
|
|
|
struct arm64_smccc_res
|
|
{
|
|
unsigned long a0;
|
|
unsigned long a1;
|
|
unsigned long a2;
|
|
unsigned long a3;
|
|
unsigned long a4;
|
|
unsigned long a5;
|
|
unsigned long a6;
|
|
unsigned long a7;
|
|
};
|
|
|
|
typedef struct arm64_smccc_res arm64_smccc_res_t;
|
|
|
|
enum arm64_smccc_conduit
|
|
{
|
|
SMCCC_CONDUIT_NONE,
|
|
SMCCC_CONDUIT_SMC,
|
|
SMCCC_CONDUIT_HVC,
|
|
};
|
|
|
|
/****************************************************************************
|
|
* Inline functions
|
|
****************************************************************************/
|
|
|
|
/* SVC with SYS_ call number and no parameters */
|
|
|
|
static inline uintptr_t sys_call0(unsigned int nbr)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and one parameter */
|
|
|
|
static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and two parameters */
|
|
|
|
static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1,
|
|
uintptr_t parm2)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg2 __asm__("x2") = (uint64_t)(parm2);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and three parameters */
|
|
|
|
static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1,
|
|
uintptr_t parm2, uintptr_t parm3)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg3 __asm__("x3") = (uint64_t)(parm3);
|
|
register uint64_t reg2 __asm__("x2") = (uint64_t)(parm2);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2),
|
|
"r"(reg3)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and four parameters */
|
|
|
|
static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1,
|
|
uintptr_t parm2, uintptr_t parm3,
|
|
uintptr_t parm4)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg4 __asm__("x4") = (uint64_t)(parm4);
|
|
register uint64_t reg3 __asm__("x3") = (uint64_t)(parm3);
|
|
register uint64_t reg2 __asm__("x2") = (uint64_t)(parm2);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2),
|
|
"r"(reg3), "r"(reg4)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and five parameters */
|
|
|
|
static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1,
|
|
uintptr_t parm2, uintptr_t parm3,
|
|
uintptr_t parm4, uintptr_t parm5)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg5 __asm__("x5") = (uint64_t)(parm5);
|
|
register uint64_t reg4 __asm__("x4") = (uint64_t)(parm4);
|
|
register uint64_t reg3 __asm__("x3") = (uint64_t)(parm3);
|
|
register uint64_t reg2 __asm__("x2") = (uint64_t)(parm2);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2),
|
|
"r"(reg3), "r"(reg4), "r"(reg5)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* SVC with SYS_ call number and six parameters */
|
|
|
|
static inline uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1,
|
|
uintptr_t parm2, uintptr_t parm3,
|
|
uintptr_t parm4, uintptr_t parm5,
|
|
uintptr_t parm6)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg6 __asm__("x6") = (uint64_t)(parm6);
|
|
register uint64_t reg5 __asm__("x5") = (uint64_t)(parm5);
|
|
register uint64_t reg4 __asm__("x4") = (uint64_t)(parm4);
|
|
register uint64_t reg3 __asm__("x3") = (uint64_t)(parm3);
|
|
register uint64_t reg2 __asm__("x2") = (uint64_t)(parm2);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm1);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"svc %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2),
|
|
"r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/* semihosting(SMH) call with call number and one parameter */
|
|
|
|
static inline long smh_call(unsigned int nbr, void *parm)
|
|
{
|
|
register uint64_t reg0 __asm__("x0") = (uint64_t)(nbr);
|
|
register uint64_t reg1 __asm__("x1") = (uint64_t)(parm);
|
|
|
|
__asm__ __volatile__
|
|
(
|
|
"hlt %1"
|
|
: "=r"(reg0)
|
|
: "i"(SYS_smhcall), "r"(reg0), "r"(reg1)
|
|
: "memory", "x30"
|
|
);
|
|
|
|
return reg0;
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Public Data
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Public Function Prototypes
|
|
****************************************************************************/
|
|
|
|
/* Make HVC calls
|
|
*
|
|
* param a0 function identifier
|
|
* param a1-a7 parameters registers
|
|
* param res results
|
|
*/
|
|
|
|
void arm64_smccc_hvc(unsigned long a0, unsigned long a1,
|
|
unsigned long a2, unsigned long a3,
|
|
unsigned long a4, unsigned long a5,
|
|
unsigned long a6, unsigned long a7,
|
|
struct arm64_smccc_res *res);
|
|
|
|
/* Make SMC calls
|
|
*
|
|
* param a0 function identifier
|
|
* param a1-a7 parameters registers
|
|
* param res results
|
|
*/
|
|
|
|
void arm64_smccc_smc(unsigned long a0, unsigned long a1,
|
|
unsigned long a2, unsigned long a3,
|
|
unsigned long a4, unsigned long a5,
|
|
unsigned long a6, unsigned long a7,
|
|
struct arm64_smccc_res *res);
|
|
|
|
#ifdef __cplusplus
|
|
#define EXTERN extern "C"
|
|
extern "C"
|
|
{
|
|
#else
|
|
#define EXTERN extern
|
|
#endif
|
|
|
|
#undef EXTERN
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#endif /* __ARCH_ARM64_INCLUDE_SYSCALL_H */
|