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serginhofr |
/* Copyright (C) 2011-2014
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<http://www.gnu.org/licenses/>. */
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#ifndef _LINUX_RISCV_SYSDEP_H
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#define _LINUX_RISCV_SYSDEP_H 1
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#include <sysdeps/unix/sysv/linux/generic/sysdep.h>
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#include <tls.h>
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#ifdef __ASSEMBLER__
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#include <sys/asm.h>
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#define ENTRY(name) LEAF(name)
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#undef PSEUDO_END
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#define PSEUDO_END(sym) END(sym)
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#define PSEUDO_NOERRNO(name, syscall_name, args) \
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.align 2; \
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ENTRY(name) \
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li a7, SYS_ify(syscall_name); \
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scall
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#define ret_NOERRNO ret
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#define PSEUDO_ERRVAL(name, syscall_name, args) \
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PSEUDO_NOERRNO(name, syscall_name, args)
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#define ret_ERRVAL ret
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#define r0 a0
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#define r1 a1
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#define MOVE(x,y) move y , x
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#define L(label) .L ## label
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#define PSEUDO(name, syscall_name, args) \
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.align 2; \
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99: j __syscall_error; \
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ENTRY(name) \
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li a7, SYS_ify(syscall_name); \
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scall; \
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bltz a0, 99b; \
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L(syse1):
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#endif /* __ASSEMBLER__ */
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#include <sysdeps/unix/sysdep.h>
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#undef SYS_ify
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#define SYS_ify(syscall_name) __NR_##syscall_name
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#ifndef __ASSEMBLER__
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/* Define a macro which expands into the inline wrapper code for a system
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call. */
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#undef INLINE_SYSCALL
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#define INLINE_SYSCALL(name, nr, args...) \
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({ INTERNAL_SYSCALL_DECL(err); \
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long result_var = INTERNAL_SYSCALL (name, err, nr, args); \
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if (result_var < 0) \
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{ \
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/* __syscall_error handles result_var <= -4096 corner case */ \
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extern long __syscall_error (long) attribute_hidden; \
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result_var = __syscall_error (result_var); \
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} \
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result_var; })
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#define INTERNAL_SYSCALL_DECL(err) do { } while (0)
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#define INTERNAL_SYSCALL_ERROR_P(val, err) ((unsigned long) (val) > -4096UL)
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#define INTERNAL_SYSCALL_ERRNO(val, err) (-val)
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#define INTERNAL_SYSCALL(name, err, nr, args...) \
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internal_syscall##nr (SYS_ify (name), err, args)
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#define INTERNAL_SYSCALL_NCS(number, err, nr, args...) \
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internal_syscall##nr (number, err, args)
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#define internal_syscall0(number, err, dummy...) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0"); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "=r" (__a0) \
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: "r" (__a7) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall1(number, err, arg0) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall2(number, err, arg0, arg1) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall3(number, err, arg0, arg1, arg2) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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register long __a2 asm("a2") = (long) (arg2); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1), "r"(__a2) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall4(number, err, arg0, arg1, arg2, arg3) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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register long __a2 asm("a2") = (long) (arg2); \
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register long __a3 asm("a3") = (long) (arg3); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall5(number, err, arg0, arg1, arg2, arg3, arg4) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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register long __a2 asm("a2") = (long) (arg2); \
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register long __a3 asm("a3") = (long) (arg3); \
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register long __a4 asm("a4") = (long) (arg4); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall6(number, err, arg0, arg1, arg2, arg3, arg4, arg5) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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register long __a2 asm("a2") = (long) (arg2); \
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register long __a3 asm("a3") = (long) (arg3); \
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register long __a4 asm("a4") = (long) (arg4); \
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register long __a5 asm("a5") = (long) (arg5); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), "r"(__a5) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define internal_syscall7(number, err, arg0, arg1, arg2, arg3, arg4, arg5, arg6) \
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({ \
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long _sys_result; \
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\
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{ \
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register long __a7 asm("a7") = number; \
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register long __a0 asm("a0") = (long) (arg0); \
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register long __a1 asm("a1") = (long) (arg1); \
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register long __a2 asm("a2") = (long) (arg2); \
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register long __a3 asm("a3") = (long) (arg3); \
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register long __a4 asm("a4") = (long) (arg4); \
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register long __a5 asm("a5") = (long) (arg5); \
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register long __a6 asm("a6") = (long) (arg6); \
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__asm__ volatile ( \
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"scall\n\t" \
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: "+r" (__a0) \
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: "r" (__a7), "r"(__a1), "r"(__a2), "r"(__a3), "r"(__a4), "r"(__a5), "r"(__a6) \
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: __SYSCALL_CLOBBERS); \
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_sys_result = __a0; \
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} \
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_sys_result; \
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})
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#define __SYSCALL_CLOBBERS "memory"
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#endif /* ! __ASSEMBLER__ */
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/* Pointer mangling is not supported. */
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#define PTR_MANGLE(var) (void) (var)
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#define PTR_DEMANGLE(var) (void) (var)
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#endif /* linux/mips/sysdep.h */
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