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243 lines
7.3 KiB
243 lines
7.3 KiB
/**************************************************************************** |
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* arch/arm/include/armv7-m/syscall.h |
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* |
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* Copyright (C) 2011 Gregory Nutt. All rights reserved. |
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* Author: Gregory Nutt <gnutt@nuttx.org> |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in |
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* the documentation and/or other materials provided with the |
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* distribution. |
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* 3. Neither the name NuttX nor the names of its contributors may be |
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* used to endorse or promote products derived from this software |
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* without specific prior written permission. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, |
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS |
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED |
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN |
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
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* POSSIBILITY OF SUCH DAMAGE. |
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* |
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****************************************************************************/ |
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/* This file should never be included directed but, rather, only indirectly |
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* through include/syscall.h or include/sys/sycall.h |
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*/ |
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#ifndef __ARCH_ARM_INCLUDE_ARMV7_M_SYSCALL_H |
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#define __ARCH_ARM_INCLUDE_ARMV7_M_SYSCALL_H |
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/**************************************************************************** |
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* Included Files |
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****************************************************************************/ |
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#include <nuttx/config.h> |
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#ifndef __ASSEMBLY__ |
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# include <stdint.h> |
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#endif |
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/**************************************************************************** |
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* Pro-processor Definitions |
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****************************************************************************/ |
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#define SYS_syscall 0x00 |
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/**************************************************************************** |
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* Public Types |
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****************************************************************************/ |
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/**************************************************************************** |
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* Inline functions |
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****************************************************************************/ |
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#ifndef __ASSEMBLY__ |
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/* SVC call with SYS_ call number and no parameters */ |
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static inline uintptr_t sys_call0(unsigned int nbr) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and one parameter */ |
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static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and two parameters */ |
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static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1, |
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uintptr_t parm2) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg2 __asm__("r2") = (long)(parm2); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and three parameters */ |
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static inline uintptr_t sys_call3(unsigned int nbr, uintptr_t parm1, |
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uintptr_t parm2, uintptr_t parm3) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg3 __asm__("r3") = (long)(parm3); |
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register long reg2 __asm__("r2") = (long)(parm2); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and four parameters */ |
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static inline uintptr_t sys_call4(unsigned int nbr, uintptr_t parm1, |
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uintptr_t parm2, uintptr_t parm3, |
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uintptr_t parm4) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg4 __asm__("r4") = (long)(parm4); |
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register long reg3 __asm__("r3") = (long)(parm3); |
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register long reg2 __asm__("r2") = (long)(parm2); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), |
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"r"(reg3), "r"(reg4) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and five parameters */ |
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static inline uintptr_t sys_call5(unsigned int nbr, uintptr_t parm1, |
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uintptr_t parm2, uintptr_t parm3, |
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uintptr_t parm4, uintptr_t parm5) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg5 __asm__("r5") = (long)(parm5); |
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register long reg4 __asm__("r4") = (long)(parm4); |
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register long reg3 __asm__("r3") = (long)(parm3); |
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register long reg2 __asm__("r2") = (long)(parm2); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), |
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"r"(reg3), "r"(reg4), "r"(reg5) |
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: "memory" |
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); |
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return reg0; |
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} |
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/* SVC call with SYS_ call number and six parameters */ |
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static inline uintptr_t sys_call6(unsigned int nbr, uintptr_t parm1, |
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uintptr_t parm2, uintptr_t parm3, |
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uintptr_t parm4, uintptr_t parm5, |
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uintptr_t parm6) |
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{ |
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register long reg0 __asm__("r0") = (long)(nbr); |
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register long reg6 __asm__("r6") = (long)(parm6); |
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register long reg5 __asm__("r5") = (long)(parm5); |
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register long reg4 __asm__("r4") = (long)(parm4); |
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register long reg3 __asm__("r3") = (long)(parm3); |
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register long reg2 __asm__("r2") = (long)(parm2); |
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register long reg1 __asm__("r1") = (long)(parm1); |
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__asm__ __volatile__ |
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( |
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"svc %1" |
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: "=r"(reg0) |
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: "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), |
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"r"(reg3), "r"(reg4), "r"(reg5), "r"(reg6) |
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: "memory" |
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); |
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return reg0; |
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} |
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/**************************************************************************** |
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* Public Variables |
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****************************************************************************/ |
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/**************************************************************************** |
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* Public Function Prototypes |
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****************************************************************************/ |
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#ifdef __cplusplus |
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#define EXTERN extern "C" |
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extern "C" { |
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#else |
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#define EXTERN extern |
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#endif |
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#undef EXTERN |
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#ifdef __cplusplus |
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} |
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#endif |
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#endif /* __ASSEMBLY__ */ |
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#endif /* __ARCH_ARM_INCLUDE_ARMV7_M_SYSCALL_H */ |
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