2011-05-08 23:38:47 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* arch/mips/include/mips32/syscall.h
|
|
|
|
*
|
2021-03-28 16:10:05 +02:00
|
|
|
* 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
|
2011-05-08 23:38:47 +02:00
|
|
|
*
|
2021-03-28 16:10:05 +02:00
|
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
2011-05-08 23:38:47 +02:00
|
|
|
*
|
2021-03-28 16:10:05 +02:00
|
|
|
* 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.
|
2011-05-08 23:38:47 +02:00
|
|
|
*
|
|
|
|
****************************************************************************/
|
|
|
|
|
2020-02-01 21:51:10 +01:00
|
|
|
/* This file should never be included directly but, rather, only indirectly
|
2011-05-08 23:38:47 +02:00
|
|
|
* through include/syscall.h or include/sys/sycall.h
|
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __ARCH_MIPS_INCLUDE_MIPS32_SYSCALL_H
|
|
|
|
#define __ARCH_MIPS_INCLUDE_MIPS32_SYSCALL_H
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Included Files
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
#include <nuttx/config.h>
|
2011-05-19 00:34:11 +02:00
|
|
|
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
# include <stdint.h>
|
|
|
|
#endif
|
2011-05-08 23:38:47 +02:00
|
|
|
|
|
|
|
/****************************************************************************
|
2015-04-08 16:04:12 +02:00
|
|
|
* Pre-processor Definitions
|
2011-05-08 23:38:47 +02:00
|
|
|
****************************************************************************/
|
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
#define SYS_syscall 0x00
|
|
|
|
|
2019-12-08 15:09:11 +01:00
|
|
|
/* Configuration ************************************************************/
|
2021-03-30 16:53:11 +02:00
|
|
|
|
2013-03-06 20:56:32 +01:00
|
|
|
/* SYS call 1 and 2 are defined for internal use by the PIC32MX port (see
|
2019-12-08 15:09:11 +01:00
|
|
|
* arch/mips/include/mips32/syscall.h). In addition, SYS call 3 is the
|
2021-03-30 16:53:11 +02:00
|
|
|
* return from a SYS call in kernel mode. The first four syscall values
|
|
|
|
* must, therefore, be reserved (0 is not used).
|
2011-05-19 00:34:11 +02:00
|
|
|
*/
|
2014-04-14 00:22:22 +02:00
|
|
|
|
2014-08-29 22:47:22 +02:00
|
|
|
#ifdef CONFIG_BUILD_KERNEL
|
2011-05-19 00:34:11 +02:00
|
|
|
# ifndef CONFIG_SYS_RESERVED
|
2013-03-06 20:56:32 +01:00
|
|
|
# error "CONFIG_SYS_RESERVED must be defined to the value 4"
|
|
|
|
# elif CONFIG_SYS_RESERVED != 4
|
|
|
|
# error "CONFIG_SYS_RESERVED must have the value 4"
|
2011-05-19 00:34:11 +02:00
|
|
|
# endif
|
|
|
|
#endif
|
|
|
|
|
2019-12-08 15:09:11 +01:00
|
|
|
/* sys_call macros **********************************************************/
|
2021-03-30 16:53:11 +02:00
|
|
|
|
2019-12-08 15:09:11 +01:00
|
|
|
/* System calls with 3 parameters and fewer are handled by sys_call0
|
|
|
|
* (sys_call1, sys_call2, and sys_call3 are aliases for sys_call0).
|
2020-02-23 09:50:23 +01:00
|
|
|
* This is because the parameters are passed in a0-a3. a0 is reserved for
|
2019-12-08 15:09:11 +01:00
|
|
|
* the syscall number leaving up to three additional parameters that can be
|
2021-03-30 16:53:11 +02:00
|
|
|
* passed in registers. The remainder would have to be pushed onto the
|
|
|
|
* stack.
|
2011-05-19 00:34:11 +02:00
|
|
|
*
|
2019-12-08 15:09:11 +01:00
|
|
|
* Instead, these macros are provided which handle parameters four, five and
|
|
|
|
* six in a non-standard way: The use s0 ($7), s1 ($8), and s2 ($9) to pass
|
|
|
|
* the additional parameters.
|
2011-05-19 00:34:11 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
|
|
|
|
/* System call SYS_ argument and four additional parameters. */
|
|
|
|
|
|
|
|
#define sys_call4(nbr,parm1,parm2,parm3,parm4) __extension__({ \
|
|
|
|
uintptr_t __result; \
|
|
|
|
__asm__ __volatile__ (\
|
|
|
|
"\tmove $4, %0\n" \
|
|
|
|
"\tmove $5, %1\n" \
|
|
|
|
"\tmove $6, %2\n" \
|
|
|
|
"\tmove $7, %3\n" \
|
|
|
|
"\tmove $8, %4\n" \
|
|
|
|
"\la $12, sys_call3\n" \
|
|
|
|
"\jalr $12, $31\n" \
|
|
|
|
"\tmove %5, $r2\n" \
|
|
|
|
: "=r" (nbr) "=r" (parm1) "=r" (parm2) "=r" (parm3) "=r" (parm4) \
|
|
|
|
: " "r"(__result)\
|
|
|
|
: "memory"\
|
|
|
|
); \
|
|
|
|
__result; \
|
|
|
|
})
|
|
|
|
|
|
|
|
/* System call SYS_ argument and five additional parameters. */
|
|
|
|
|
|
|
|
#define sys_call5(nbr,parm1,parm2,parm3,parm4,parm5) __extension__({ \
|
|
|
|
uintptr_t __result; \
|
|
|
|
__asm__ __volatile__ (\
|
|
|
|
"\tmove $4, %0\n" \
|
|
|
|
"\tmove $5, %1\n" \
|
|
|
|
"\tmove $6, %2\n" \
|
|
|
|
"\tmove $7, %3\n" \
|
|
|
|
"\tmove $8, %4\n" \
|
|
|
|
"\tmove $9, %5\n" \
|
|
|
|
"\la $12, sys_call3\n" \
|
|
|
|
"\jalr $12, $31\n" \
|
|
|
|
"\tmove %6, $r2\n" \
|
|
|
|
: "=r" (nbr) "=r" (parm1) "=r" (parm2) "=r" (parm3) "=r" (parm4) "=r" (parm5) \
|
|
|
|
: " "r"(__result)\
|
|
|
|
: "memory"\
|
|
|
|
); \
|
|
|
|
__result; \
|
|
|
|
})
|
|
|
|
|
|
|
|
/* System call SYS_ argument and six additional parameters. */
|
|
|
|
|
|
|
|
#define sys_call5(nbr,parm1,parm2,parm3,parm4,parm5,parm6) __extension__({ \
|
|
|
|
uintptr_t __result; \
|
|
|
|
__asm__ __volatile__ (\
|
|
|
|
"\tmove $4, %0\n" \
|
|
|
|
"\tmove $5, %1\n" \
|
|
|
|
"\tmove $6, %2\n" \
|
|
|
|
"\tmove $7, %3\n" \
|
|
|
|
"\tmove $8, %4\n" \
|
|
|
|
"\tmove $9, %5\n" \
|
|
|
|
"\tmove $10, %5\n" \
|
|
|
|
"\la $12, sys_call3\n" \
|
|
|
|
"\jalr $12, $31\n" \
|
|
|
|
"\tmove %6, $r2\n" \
|
|
|
|
: "=r" (nbr) "=r" (parm1) "=r" (parm2) "=r" (parm3) "=r" (parm4) "=r" (parm5) \
|
|
|
|
: " "r"(__result)\
|
|
|
|
: "memory"\
|
|
|
|
); \
|
|
|
|
__result; \
|
|
|
|
})
|
|
|
|
|
2019-12-08 15:09:11 +01:00
|
|
|
/* Context switching system calls *******************************************/
|
2011-05-19 00:34:11 +02:00
|
|
|
|
2013-03-06 20:56:32 +01:00
|
|
|
/* SYS call 0: (not used) */
|
|
|
|
|
2011-11-15 23:37:14 +01:00
|
|
|
/* SYS call 1:
|
2011-05-19 00:34:11 +02:00
|
|
|
*
|
2012-09-17 20:35:37 +02:00
|
|
|
* void up_fullcontextrestore(uint32_t *restoreregs) noreturn_function;
|
2011-05-19 00:34:11 +02:00
|
|
|
*/
|
|
|
|
|
|
|
|
#define SYS_restore_context (1)
|
|
|
|
#define up_fullcontextrestore(restoreregs) \
|
2020-01-02 17:49:34 +01:00
|
|
|
sys_call1(SYS_restore_context, (uintptr_t)restoreregs)
|
2011-05-19 00:34:11 +02:00
|
|
|
|
2011-11-15 23:37:14 +01:00
|
|
|
/* SYS call 2:
|
2011-05-19 00:34:11 +02:00
|
|
|
*
|
|
|
|
* void up_switchcontext(uint32_t *saveregs, uint32_t *restoreregs);
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define SYS_switch_context (2)
|
|
|
|
#define up_switchcontext(saveregs, restoreregs) \
|
2020-01-02 17:49:34 +01:00
|
|
|
sys_call2(SYS_switch_context, (uintptr_t)saveregs, (uintptr_t)restoreregs)
|
2011-05-19 00:34:11 +02:00
|
|
|
|
2014-08-29 22:47:22 +02:00
|
|
|
#ifdef CONFIG_BUILD_KERNEL
|
2013-03-06 20:56:32 +01:00
|
|
|
/* SYS call 3:
|
|
|
|
*
|
|
|
|
* void up_syscall_return(void);
|
|
|
|
*/
|
|
|
|
|
|
|
|
#define SYS_syscall_return (3)
|
|
|
|
#define up_syscall_return() (void)sys_call0(SYS_syscall_return)
|
|
|
|
|
|
|
|
#endif
|
2011-05-19 00:34:11 +02:00
|
|
|
#endif /* __ASSEMBLY__ */
|
2011-05-08 23:38:47 +02:00
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Public Types
|
|
|
|
****************************************************************************/
|
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Inline functions
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
|
2011-05-08 23:38:47 +02:00
|
|
|
/****************************************************************************
|
2015-10-03 01:42:29 +02:00
|
|
|
* Public Data
|
2011-05-08 23:38:47 +02:00
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
/****************************************************************************
|
|
|
|
* Public Function Prototypes
|
|
|
|
****************************************************************************/
|
|
|
|
|
|
|
|
#ifdef __cplusplus
|
|
|
|
#define EXTERN extern "C"
|
2015-06-13 03:00:52 +02:00
|
|
|
extern "C"
|
|
|
|
{
|
2011-05-08 23:38:47 +02:00
|
|
|
#else
|
|
|
|
#define EXTERN extern
|
|
|
|
#endif
|
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Name: up_syscall0
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* System call SYS_ argument and no additional parameters.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2015-06-13 03:00:52 +02:00
|
|
|
uintptr_t sys_call0(unsigned int nbr);
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Name: up_syscall1
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* System call SYS_ argument and one additional parameter.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2015-06-13 03:00:52 +02:00
|
|
|
uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1);
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Name: up_syscall2
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* System call SYS_ argument and two additional parameters.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2015-06-13 03:00:52 +02:00
|
|
|
uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1, uintptr_t parm2);
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
/****************************************************************************
|
|
|
|
* Name: up_syscall3
|
|
|
|
*
|
|
|
|
* Description:
|
|
|
|
* System call SYS_ argument and three additional parameters.
|
|
|
|
*
|
|
|
|
****************************************************************************/
|
2011-05-08 23:38:47 +02:00
|
|
|
|
2015-07-03 22:36:19 +02:00
|
|
|
uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1, uintptr_t parm2,
|
2015-06-13 03:00:52 +02:00
|
|
|
uintptr_t parm3);
|
2011-05-08 23:38:47 +02:00
|
|
|
|
|
|
|
#undef EXTERN
|
|
|
|
#ifdef __cplusplus
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
2011-05-19 00:34:11 +02:00
|
|
|
#endif /* __ASSEMBLY__ */
|
2011-05-08 23:38:47 +02:00
|
|
|
#endif /* __ARCH_MIPS_INCLUDE_MIPS32_SYSCALL_H */
|