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/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_PARISC_UNISTD_H_
#define _ASM_PARISC_UNISTD_H_

#include <uapi/asm/unistd.h>

#ifndef __ASSEMBLY__

#define SYS_ify(syscall_name)   __NR_##syscall_name

#ifndef ASM_LINE_SEP
# define ASM_LINE_SEP ;
#endif

/* Definition taken from glibc 2.3.3
 * sysdeps/unix/sysv/linux/hppa/sysdep.h
 */

#ifdef PIC
/* WARNING: CANNOT BE USED IN A NOP! */
# define K_STW_ASM_PIC	"       copy %%r19, %%r4\n"
# define K_LDW_ASM_PIC	"       copy %%r4, %%r19\n"
# define K_USING_GR4	"%r4",
#else
# define K_STW_ASM_PIC	" \n"
# define K_LDW_ASM_PIC	" \n"
# define K_USING_GR4
#endif

/* GCC has to be warned that a syscall may clobber all the ABI
   registers listed as "caller-saves", see page 8, Table 2
   in section 2.2.6 of the PA-RISC RUN-TIME architecture
   document. However! r28 is the result and will conflict with
   the clobber list so it is left out. Also the input arguments
   registers r20 -> r26 will conflict with the list so they
   are treated specially. Although r19 is clobbered by the syscall
   we cannot say this because it would violate ABI, thus we say
   r4 is clobbered and use that register to save/restore r19
   across the syscall. */

#define K_CALL_CLOB_REGS "%r1", "%r2", K_USING_GR4 \
	        	 "%r20", "%r29", "%r31"

#undef K_INLINE_SYSCALL
#define K_INLINE_SYSCALL(name, nr, args...)	({			\
	long __sys_res;							\
	{								\
		register unsigned long __res __asm__("r28");		\
		K_LOAD_ARGS_##nr(args)					\
		/* FIXME: HACK stw/ldw r19 around syscall */		\
		__asm__ volatile(					\
			K_STW_ASM_PIC					\
			"	ble  0x100(%%sr2, %%r0)\n"		\
			"	ldi %1, %%r20\n"			\
			K_LDW_ASM_PIC					\
			: "=r" (__res)					\
			: "i" (SYS_ify(name)) K_ASM_ARGS_##nr   	\
			: "memory", K_CALL_CLOB_REGS K_CLOB_ARGS_##nr	\
		);							\
		__sys_res = (long)__res;				\
	}								\
	if ( (unsigned long)__sys_res >= (unsigned long)-4095 ){	\
		errno = -__sys_res;		        		\
		__sys_res = -1;						\
	}								\
	__sys_res;							\
})

#define K_LOAD_ARGS_0()
#define K_LOAD_ARGS_1(r26)					\
	register unsigned long __r26 __asm__("r26") = (unsigned long)(r26);   \
	K_LOAD_ARGS_0()
#define K_LOAD_ARGS_2(r26,r25)					\
	register unsigned long __r25 __asm__("r25") = (unsigned long)(r25);   \
	K_LOAD_ARGS_1(r26)
#define K_LOAD_ARGS_3(r26,r25,r24)				\
	register unsigned long __r24 __asm__("r24") = (unsigned long)(r24);   \
	K_LOAD_ARGS_2(r26,r25)
#define K_LOAD_ARGS_4(r26,r25,r24,r23)				\
	register unsigned long __r23 __asm__("r23") = (unsigned long)(r23);   \
	K_LOAD_ARGS_3(r26,r25,r24)
#define K_LOAD_ARGS_5(r26,r25,r24,r23,r22)			\
	register unsigned long __r22 __asm__("r22") = (unsigned long)(r22);   \
	K_LOAD_ARGS_4(r26,r25,r24,r23)
#define K_LOAD_ARGS_6(r26,r25,r24,r23,r22,r21)			\
	register unsigned long __r21 __asm__("r21") = (unsigned long)(r21);   \
	K_LOAD_ARGS_5(r26,r25,r24,r23,r22)

/* Even with zero args we use r20 for the syscall number */
#define K_ASM_ARGS_0
#define K_ASM_ARGS_1 K_ASM_ARGS_0, "r" (__r26)
#define K_ASM_ARGS_2 K_ASM_ARGS_1, "r" (__r25)
#define K_ASM_ARGS_3 K_ASM_ARGS_2, "r" (__r24)
#define K_ASM_ARGS_4 K_ASM_ARGS_3, "r" (__r23)
#define K_ASM_ARGS_5 K_ASM_ARGS_4, "r" (__r22)
#define K_ASM_ARGS_6 K_ASM_ARGS_5, "r" (__r21)

/* The registers not listed as inputs but clobbered */
#define K_CLOB_ARGS_6
#define K_CLOB_ARGS_5 K_CLOB_ARGS_6, "%r21"
#define K_CLOB_ARGS_4 K_CLOB_ARGS_5, "%r22"
#define K_CLOB_ARGS_3 K_CLOB_ARGS_4, "%r23"
#define K_CLOB_ARGS_2 K_CLOB_ARGS_3, "%r24"
#define K_CLOB_ARGS_1 K_CLOB_ARGS_2, "%r25"
#define K_CLOB_ARGS_0 K_CLOB_ARGS_1, "%r26"

#define _syscall0(type,name)						\
type name(void)								\
{									\
    return K_INLINE_SYSCALL(name, 0);	                                \
}

#define _syscall1(type,name,type1,arg1)					\
type name(type1 arg1)							\
{									\
    return K_INLINE_SYSCALL(name, 1, arg1);	                        \
}

#define _syscall2(type,name,type1,arg1,type2,arg2)			\
type name(type1 arg1, type2 arg2)					\
{									\
    return K_INLINE_SYSCALL(name, 2, arg1, arg2);	                \
}

#define _syscall3(type,name,type1,arg1,type2,arg2,type3,arg3)		\
type name(type1 arg1, type2 arg2, type3 arg3)				\
{									\
    return K_INLINE_SYSCALL(name, 3, arg1, arg2, arg3);	                \
}

#define _syscall4(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4)		\
{									\
    return K_INLINE_SYSCALL(name, 4, arg1, arg2, arg3, arg4);	        \
}

/* select takes 5 arguments */
#define _syscall5(type,name,type1,arg1,type2,arg2,type3,arg3,type4,arg4,type5,arg5) \
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5)	\
{									\
    return K_INLINE_SYSCALL(name, 5, arg1, arg2, arg3, arg4, arg5);	\
}

#define __ARCH_WANT_OLD_READDIR
#define __ARCH_WANT_STAT64
#define __ARCH_WANT_SYS_ALARM
#define __ARCH_WANT_SYS_GETHOSTNAME
#define __ARCH_WANT_SYS_PAUSE
#define __ARCH_WANT_SYS_SIGNAL
#define __ARCH_WANT_SYS_TIME
#define __ARCH_WANT_COMPAT_SYS_TIME
#define __ARCH_WANT_COMPAT_SYS_SCHED_RR_GET_INTERVAL
#define __ARCH_WANT_SYS_UTIME
#define __ARCH_WANT_SYS_WAITPID
#define __ARCH_WANT_SYS_SOCKETCALL
#define __ARCH_WANT_SYS_FADVISE64
#define __ARCH_WANT_SYS_GETPGRP
#define __ARCH_WANT_SYS_LLSEEK
#define __ARCH_WANT_SYS_NICE
#define __ARCH_WANT_SYS_OLDUMOUNT
#define __ARCH_WANT_SYS_SIGPENDING
#define __ARCH_WANT_SYS_SIGPROCMASK
#define __ARCH_WANT_SYS_FORK
#define __ARCH_WANT_SYS_VFORK
#define __ARCH_WANT_SYS_CLONE
#define __ARCH_WANT_COMPAT_SYS_SENDFILE

#endif /* __ASSEMBLY__ */

#undef STR

#endif /* _ASM_PARISC_UNISTD_H_ */

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Name Type Size Permission Actions
Kbuild File 610 B 0644
agp.h File 596 B 0644
asm-offsets.h File 35 B 0644
asmregs.h File 3.04 KB 0644
assembly.h File 12.94 KB 0644
atomic.h File 8.24 KB 0644
barrier.h File 2.44 KB 0644
bitops.h File 5.89 KB 0644
bug.h File 2.35 KB 0644
bugs.h File 340 B 0644
cache.h File 1.59 KB 0644
cacheflush.h File 4.06 KB 0644
checksum.h File 5.48 KB 0644
cmpxchg.h File 3.62 KB 0644
compat.h File 6.52 KB 0644
compat_ucontext.h File 591 B 0644
delay.h File 533 B 0644
dma-mapping.h File 2.42 KB 0644
dma.h File 5.71 KB 0644
dwarf.h File 602 B 0644
eisa_bus.h File 702 B 0644
eisa_eeprom.h File 4.42 KB 0644
elf.h File 14.31 KB 0644
fb.h File 403 B 0644
fixmap.h File 1.15 KB 0644
floppy.h File 6.61 KB 0644
ftrace.h File 379 B 0644
futex.h File 2.66 KB 0644
grfioctl.h File 4.68 KB 0644
hardirq.h File 1.3 KB 0644
hardware.h File 4.1 KB 0644
hash.h File 5.07 KB 0644
hugetlb.h File 1.67 KB 0644
ide.h File 1.09 KB 0644
io.h File 8.14 KB 0644
irq.h File 1.23 KB 0644
irqflags.h File 1.02 KB 0644
kbdleds.h File 477 B 0644
kmap_types.h File 221 B 0644
ldcw.h File 2.15 KB 0644
led.h File 1.33 KB 0644
linkage.h File 759 B 0644
machdep.h File 349 B 0644
mckinley.h File 270 B 0644
mmu.h File 195 B 0644
mmu_context.h File 2.08 KB 0644
mmzone.h File 1.51 KB 0644
module.h File 527 B 0644
page.h File 5.42 KB 0644
parisc-device.h File 1.92 KB 0644
parport.h File 358 B 0644
pci.h File 6.57 KB 0644
pdc.h File 3.93 KB 0644
pdc_chassis.h File 15.06 KB 0644
pdcpat.h File 15 KB 0644
perf.h File 1.89 KB 0644
perf_event.h File 152 B 0644
pgalloc.h File 4.22 KB 0644
pgtable.h File 18.92 KB 0644
prefetch.h File 1.12 KB 0644
processor.h File 9.86 KB 0644
psw.h File 2.39 KB 0644
ptrace.h File 803 B 0644
ropes.h File 9.73 KB 0644
rt_sigframe.h File 745 B 0644
runway.h File 320 B 0644
sections.h File 283 B 0644
serial.h File 124 B 0644
shmparam.h File 263 B 0644
signal.h File 841 B 0644
smp.h File 1.25 KB 0644
socket.h File 311 B 0644
special_insns.h File 1015 B 0644
spinlock.h File 4.02 KB 0644
spinlock_types.h File 483 B 0644
string.h File 247 B 0644
superio.h File 3.25 KB 0644
switch_to.h File 332 B 0644
syscall.h File 1.4 KB 0644
termios.h File 1.72 KB 0644
thread_info.h File 3.15 KB 0644
timex.h File 372 B 0644
tlb.h File 672 B 0644
tlbflush.h File 2.63 KB 0644
topology.h File 900 B 0644
traps.h File 468 B 0644
uaccess.h File 6.55 KB 0644
ucontext.h File 327 B 0644
unaligned.h File 472 B 0644
unistd.h File 5.47 KB 0644
unwind.h File 2.56 KB 0644