98 lines
3.0 KiB
C
Executable File
98 lines
3.0 KiB
C
Executable File
/*
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* ===========================================================================================
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*
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* Filename: syscall_arch.h
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*
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* Description: porting from musl libc.
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*
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* Version: Melis3.0
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* Create: 2020-07-09 08:54:18
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* Revision: none
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* Compiler: GCC:version 7.2.1 20170904 (release),ARM/embedded-7-branch revision 255204
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*
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* Author: caozilong@allwinnertech.com
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* Organization: BU1-PSW
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* Last Modified: 2020-07-09 08:55:22
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*
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* ===========================================================================================
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*/
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#ifndef _RISCV_SYSCALL_IMPL_
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#define _RISCV_SYSCALL_IMPL_
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#define __SYSCALL_LL_E(x) (x)
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#define __SYSCALL_LL_O(x) (x)
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#define __asm_syscall(...) do { \
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__asm__ __volatile__ ( \
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"ecall" \
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: "=r"(a0) : __VA_ARGS__ : \
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"memory", "ra", "cc"); \
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return a0; \
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} while (0)
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static inline long __syscall0(long n)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0");
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__asm_syscall("r"(a7));
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}
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static inline long __syscall1(long n, long a)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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__asm_syscall("r"(a7), "0"(a0));
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}
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static inline long __syscall2(long n, long a, long b)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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register long a1 __asm__("a1") = b;
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__asm_syscall("r"(a7), "0"(a0), "r"(a1));
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}
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static inline long __syscall3(long n, long a, long b, long c)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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register long a1 __asm__("a1") = b;
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register long a2 __asm__("a2") = c;
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__asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2));
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}
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static inline long __syscall4(long n, long a, long b, long c, long d)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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register long a1 __asm__("a1") = b;
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register long a2 __asm__("a2") = c;
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register long a3 __asm__("a3") = d;
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__asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3));
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}
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static inline long __syscall5(long n, long a, long b, long c, long d, long e)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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register long a1 __asm__("a1") = b;
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register long a2 __asm__("a2") = c;
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register long a3 __asm__("a3") = d;
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register long a4 __asm__("a4") = e;
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__asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a4));
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}
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static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
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{
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register long a7 __asm__("a7") = n;
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register long a0 __asm__("a0") = a;
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register long a1 __asm__("a1") = b;
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register long a2 __asm__("a2") = c;
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register long a3 __asm__("a3") = d;
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register long a4 __asm__("a4") = e;
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register long a5 __asm__("a5") = f;
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__asm_syscall("r"(a7), "0"(a0), "r"(a1), "r"(a2), "r"(a3), "r"(a4), "r"(a5));
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}
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#endif
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