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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-02-16 16:32:19 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2013-02-16 16:32:19 +0000 |
commit | b78eb3e4bbd9a44cb38e6cd5f7fdde4e22a183f4 (patch) | |
tree | 82e3a9b70e21bda79f4a26bf36dd755dcb4160a9 /nuttx/arch/arm/include/armv6-m/syscall.h | |
parent | 54c9fa75c9466f4676d12105dbf4026aeb92adb7 (diff) | |
download | px4-nuttx-b78eb3e4bbd9a44cb38e6cd5f7fdde4e22a183f4.tar.gz px4-nuttx-b78eb3e4bbd9a44cb38e6cd5f7fdde4e22a183f4.tar.bz2 px4-nuttx-b78eb3e4bbd9a44cb38e6cd5f7fdde4e22a183f4.zip |
First cut at support for Cortex-M0
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5655 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/include/armv6-m/syscall.h')
-rw-r--r-- | nuttx/arch/arm/include/armv6-m/syscall.h | 243 |
1 files changed, 243 insertions, 0 deletions
diff --git a/nuttx/arch/arm/include/armv6-m/syscall.h b/nuttx/arch/arm/include/armv6-m/syscall.h new file mode 100644 index 000000000..f92dea7e8 --- /dev/null +++ b/nuttx/arch/arm/include/armv6-m/syscall.h @@ -0,0 +1,243 @@ +/**************************************************************************** + * arch/arm/include/armv6-m/syscall.h + * + * Copyright (C) 2013 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <gnutt@nuttx.org> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name NuttX nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + ****************************************************************************/ + +/* This file should never be included directed but, rather, only indirectly + * through include/syscall.h or include/sys/sycall.h + */ + +#ifndef __ARCH_ARM_INCLUDE_ARMV6_M_SYSCALL_H +#define __ARCH_ARM_INCLUDE_ARMV6_M_SYSCALL_H + +/**************************************************************************** + * Included Files + ****************************************************************************/ + +#include <nuttx/config.h> + +#ifndef __ASSEMBLY__ +# include <stdint.h> +#endif + +/**************************************************************************** + * Pro-processor Definitions + ****************************************************************************/ + +#define SYS_syscall 0x00 + +/**************************************************************************** + * Public Types + ****************************************************************************/ + +/**************************************************************************** + * Inline functions + ****************************************************************************/ + +#ifndef __ASSEMBLY__ + +/* SVC call with SYS_ call number and no parameters */ + +static inline uintptr_t sys_call0(unsigned int nbr) +{ + register long reg0 __asm__("r0") = (long)(nbr); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0) + : "memory" + ); + + return reg0; +} + +/* SVC call with SYS_ call number and one parameter */ + +static inline uintptr_t sys_call1(unsigned int nbr, uintptr_t parm1) +{ + register long reg0 __asm__("r0") = (long)(nbr); + register long reg1 __asm__("r1") = (long)(parm1); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0), "r"(reg1) + : "memory" + ); + + return reg0; +} + +/* SVC call with SYS_ call number and two parameters */ + +static inline uintptr_t sys_call2(unsigned int nbr, uintptr_t parm1, + uintptr_t parm2) +{ + register long reg0 __asm__("r0") = (long)(nbr); + register long reg2 __asm__("r2") = (long)(parm2); + register long reg1 __asm__("r1") = (long)(parm1); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2) + : "memory" + ); + + return reg0; +} + +/* SVC call 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 long reg0 __asm__("r0") = (long)(nbr); + register long reg3 __asm__("r3") = (long)(parm3); + register long reg2 __asm__("r2") = (long)(parm2); + register long reg1 __asm__("r1") = (long)(parm1); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), "r"(reg3) + : "memory" + ); + + return reg0; +} + +/* SVC call 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 long reg0 __asm__("r0") = (long)(nbr); + register long reg4 __asm__("r4") = (long)(parm4); + register long reg3 __asm__("r3") = (long)(parm3); + register long reg2 __asm__("r2") = (long)(parm2); + register long reg1 __asm__("r1") = (long)(parm1); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), + "r"(reg3), "r"(reg4) + : "memory" + ); + + return reg0; +} + +/* SVC call 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 long reg0 __asm__("r0") = (long)(nbr); + register long reg5 __asm__("r5") = (long)(parm5); + register long reg4 __asm__("r4") = (long)(parm4); + register long reg3 __asm__("r3") = (long)(parm3); + register long reg2 __asm__("r2") = (long)(parm2); + register long reg1 __asm__("r1") = (long)(parm1); + + __asm__ __volatile__ + ( + "svc %1" + : "=r"(reg0) + : "i"(SYS_syscall), "r"(reg0), "r"(reg1), "r"(reg2), + "r"(reg3), "r"(reg4), "r"(reg5) + : "memory" + ); + + return reg0; +} + +/* SVC call 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 long reg0 __asm__("r0") = (long)(nbr); + register long reg6 __asm__("r6") = (long)(parm6); + register long reg5 __asm__("r5") = (long)(parm5); + register long reg4 __asm__("r4") = (long)(parm4); + register long reg3 __asm__("r3") = (long)(parm3); + register long reg2 __asm__("r2") = (long)(parm2); + register long reg1 __asm__("r1") = (long)(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" + ); + + return reg0; +} + +/**************************************************************************** + * Public Variables + ****************************************************************************/ + +/**************************************************************************** + * Public Function Prototypes + ****************************************************************************/ + +#ifdef __cplusplus +#define EXTERN extern "C" +extern "C" { +#else +#define EXTERN extern +#endif + +#undef EXTERN +#ifdef __cplusplus +} +#endif + +#endif /* __ASSEMBLY__ */ +#endif /* __ARCH_ARM_INCLUDE_ARMV6_M_SYSCALL_H */ + |