/*----------------------------------------------------------------------
Copyright © 2005-2020 Rich Felker, et al.

Permission is hereby granted, free of charge, to any person obtaining
		a copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
		without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
		permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be
included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
		CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
		TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
		SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
----------------------------------------------------------------------*/
#define __SYSCALL_LL_E(x) \
((union { long long ll; long l[2]; }){ .ll = x }).l[0], \
((union { long long ll; long l[2]; }){ .ll = x }).l[1]
#define __SYSCALL_LL_O(x) 0, __SYSCALL_LL_E((x))

#ifdef __thumb__

/* Avoid use of r7 in asm constraints when producing thumb code,
 * since it's reserved as frame pointer and might not be supported. */
#define __ASM____R7__
#define __asm_syscall(...) do { \
	__asm__ __volatile__ ( "mov %1,r7 ; mov r7,%2 ; svc 0 ; mov r7,%1" \
	: "=r"(r0), "=&r"((int){0}) : __VA_ARGS__ : "memory"); \
	return r0; \
	} while (0)

#else

#define __ASM____R7__ __asm__("r7")
#define __asm_syscall(...) do { \
	__asm__ __volatile__ ( "svc 0" \
	: "=r"(r0) : __VA_ARGS__ : "memory"); \
	return r0; \
	} while (0)
#endif

/* For thumb2, we can allow 8-bit immediate syscall numbers, saving a
 * register in the above dance around r7. Does not work for thumb1 where
 * only movs, not mov, supports immediates, and we can't use movs because
 * it doesn't support high regs. */
#ifdef __thumb2__
#define R7_OPERAND "rI"(r7)
#else
#define R7_OPERAND "r"(r7)
#endif

__attribute__((always_inline))
static inline long __syscall0(long n)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0");
	__asm_syscall(R7_OPERAND);
}

__attribute__((always_inline))
static inline long __syscall1(long n, long a)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	__asm_syscall(R7_OPERAND, "0"(r0));
}

__attribute__((always_inline))
static inline long __syscall2(long n, long a, long b)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	register long r1 __asm__("r1") = b;
	__asm_syscall(R7_OPERAND, "0"(r0), "r"(r1));
}

__attribute__((always_inline))
static inline long __syscall3(long n, long a, long b, long c)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	register long r1 __asm__("r1") = b;
	register long r2 __asm__("r2") = c;
	__asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2));
}

__attribute__((always_inline))
static inline long __syscall4(long n, long a, long b, long c, long d)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	register long r1 __asm__("r1") = b;
	register long r2 __asm__("r2") = c;
	register long r3 __asm__("r3") = d;
	__asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3));
}

__attribute__((always_inline))
static inline long __syscall5(long n, long a, long b, long c, long d, long e)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	register long r1 __asm__("r1") = b;
	register long r2 __asm__("r2") = c;
	register long r3 __asm__("r3") = d;
	register long r4 __asm__("r4") = e;
	__asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4));
}

__attribute__((always_inline))
static inline long __syscall6(long n, long a, long b, long c, long d, long e, long f)
{
	register long r7 __ASM____R7__ = n;
	register long r0 __asm__("r0") = a;
	register long r1 __asm__("r1") = b;
	register long r2 __asm__("r2") = c;
	register long r3 __asm__("r3") = d;
	register long r4 __asm__("r4") = e;
	register long r5 __asm__("r5") = f;
	__asm_syscall(R7_OPERAND, "0"(r0), "r"(r1), "r"(r2), "r"(r3), "r"(r4), "r"(r5));
}

#define VDSO_USEFUL
#define VDSO_CGT32_SYM "__vdso_clock_gettime"
#define VDSO_CGT32_VER "LINUX_2.6"
#define VDSO_CGT_SYM "__vdso_clock_gettime64"
#define VDSO_CGT_VER "LINUX_2.6"

#define SYSCALL_FADVISE_6_ARG

#define SYSCALL_IPC_BROKEN_MODE
