[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / powerpc / powerpc32 / sysdep.h

/* Copyright (C) 1992-2015 Free Software Foundation, Inc.
   This file is part of the GNU C Library.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, see
   <http://www.gnu.org/licenses/>.  */

#ifndef _LINUX_POWERPC_SYSDEP_H
#define _LINUX_POWERPC_SYSDEP_H 1

#include <sysdeps/unix/powerpc/sysdep.h>
#include <tls.h>

/* Some systen calls got renamed over time, but retained the same semantics.
   Handle them here so they can be catched by both C and assembler stubs in
   glibc.  */

#ifdef __NR_pread64
# ifdef __NR_pread
#  error "__NR_pread and __NR_pread64 both defined???"
# endif
# define __NR_pread __NR_pread64
#endif

#ifdef __NR_pwrite64
# ifdef __NR_pwrite
#  error "__NR_pwrite and __NR_pwrite64 both defined???"
# endif
# define __NR_pwrite __NR_pwrite64
#endif

/* For Linux we can use the system call table in the header file
	/usr/include/asm/unistd.h
   of the kernel.  But these symbols do not follow the SYS_* syntax
   so we have to redefine the `SYS_ify' macro here.  */
#undef SYS_ify
#define SYS_ify(syscall_name)	__NR_##syscall_name

#ifndef __ASSEMBLER__

# include <errno.h>

# ifdef SHARED
#  define INLINE_VSYSCALL(name, nr, args...) \
  ({									      \
    __label__ out;							      \
    __label__ iserr;							      \
    INTERNAL_SYSCALL_DECL (sc_err);					      \
    long int sc_ret;							      \
									      \
    if (__vdso_##name != NULL)						      \
      {									      \
	sc_ret =							      \
	  INTERNAL_VSYSCALL_NCS (__vdso_##name, sc_err, long int, nr, ##args);\
	if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err))			      \
	  goto out;							      \
	if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS)		      \
	  goto iserr;							      \
      }									      \
									      \
    sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args);		      \
    if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err))			      \
      {									      \
      iserr:								      \
        __set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err));		      \
        sc_ret = -1L;							      \
      }									      \
  out:									      \
    sc_ret;								      \
  })
# else
#  define INLINE_VSYSCALL(name, nr, args...) \
  INLINE_SYSCALL (name, nr, ##args)
# endif

# ifdef SHARED
#  define INTERNAL_VSYSCALL(name, err, nr, args...) \
  ({									      \
    __label__ out;							      \
    long int v_ret;							      \
									      \
    if (__vdso_##name != NULL)						      \
      {									      \
	v_ret =								      \
	  INTERNAL_VSYSCALL_NCS (__vdso_##name, err, long int, nr, ##args);   \
	if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err)			      \
	    || INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS)		      \
	  goto out;							      \
      }									      \
    v_ret = INTERNAL_SYSCALL (name, err, nr, ##args);			      \
  out:									      \
    v_ret;								      \
  })
# else
#  define INTERNAL_VSYSCALL(name, err, nr, args...) \
  INTERNAL_SYSCALL (name, err, nr, ##args)
# endif

# define INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK(name, err, type, nr, args...)  \
  ({									      \
    type sc_ret = ENOSYS;						      \
									      \
    if (__vdso_##name != NULL)						      \
      sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, type, nr, ##args);  \
    else								      \
      err = 1 << 28;							      \
    sc_ret;								      \
  })

/* List of system calls which are supported as vsyscalls.  */
# define HAVE_CLOCK_GETRES_VSYSCALL	1
# define HAVE_CLOCK_GETTIME_VSYSCALL	1

/* Define a macro which expands inline into the wrapper code for a VDSO
   call. This use is for internal calls that do not need to handle errors
   normally. It will never touch errno.
   On powerpc a system call basically clobbers the same registers like a
   function call, with the exception of LR (which is needed for the
   "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
   an error return status).  */
# define INTERNAL_VSYSCALL_NCS(funcptr, err, type, nr, args...) \
  ({									      \
    register void *r0  __asm__ ("r0");					      \
    register long int r3  __asm__ ("r3");				      \
    register long int r4  __asm__ ("r4");				      \
    register long int r5  __asm__ ("r5");				      \
    register long int r6  __asm__ ("r6");				      \
    register long int r7  __asm__ ("r7");				      \
    register long int r8  __asm__ ("r8");				      \
    register long int r9  __asm__ ("r9");				      \
    register long int r10 __asm__ ("r10");				      \
    register long int r11 __asm__ ("r11");				      \
    register long int r12 __asm__ ("r12");				      \
    register type rval  __asm__ ("r3");					      \
    LOADARGS_##nr (funcptr, args);					      \
    __asm__ __volatile__						      \
      ("mtctr %0\n\t"							      \
       "bctrl\n\t"							      \
       "mfcr %0"							      \
       : "+r" (r0), "+r" (r3), "+r" (r4), "+r" (r5),  "+r" (r6),  "+r" (r7),  \
	 "+r" (r8), "+r" (r9), "+r" (r10), "+r" (r11), "+r" (r12)	      \
       : : "cr0", "ctr", "lr", "memory");				      \
    err = (long int) r0;						      \
    __asm__ __volatile__ ("" : "=r" (rval) : "r" (r3), "r" (r4));	      \
    rval;								      \
  })

# undef INLINE_SYSCALL
# define INLINE_SYSCALL(name, nr, args...)				\
  ({									\
    INTERNAL_SYSCALL_DECL (sc_err);					\
    long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args);	\
    if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err))			\
      {									\
	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err));		\
	sc_ret = -1L;							\
      }									\
    sc_ret;								\
  })

/* Define a macro which expands inline into the wrapper code for a system
   call. This use is for internal calls that do not need to handle errors
   normally. It will never touch errno.
   On powerpc a system call basically clobbers the same registers like a
   function call, with the exception of LR (which is needed for the
   "sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
   an error return status).  */

# undef INTERNAL_SYSCALL_DECL
# define INTERNAL_SYSCALL_DECL(err) long int err __attribute__ ((unused))

# undef INTERNAL_SYSCALL
# define INTERNAL_SYSCALL_NCS(name, err, nr, args...)			\
  ({									\
    register long int r0  __asm__ ("r0");				\
    register long int r3  __asm__ ("r3");				\
    register long int r4  __asm__ ("r4");				\
    register long int r5  __asm__ ("r5");				\
    register long int r6  __asm__ ("r6");				\
    register long int r7  __asm__ ("r7");				\
    register long int r8  __asm__ ("r8");				\
    register long int r9  __asm__ ("r9");				\
    register long int r10 __asm__ ("r10");				\
    register long int r11 __asm__ ("r11");				\
    register long int r12 __asm__ ("r12");				\
    LOADARGS_##nr(name, args);						\
    __asm__ __volatile__						\
      ("sc   \n\t"							\
       "mfcr %0"							\
       : "=&r" (r0),							\
	 "=&r" (r3), "=&r" (r4), "=&r" (r5),  "=&r" (r6),  "=&r" (r7),	\
	 "=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12)	\
       : ASM_INPUT_##nr							\
       : "cr0", "ctr", "memory");					\
    err = r0;								\
    (int) r3;								\
  })
# define INTERNAL_SYSCALL(name, err, nr, args...) \
  INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)

# undef INTERNAL_SYSCALL_ERROR_P
# define INTERNAL_SYSCALL_ERROR_P(val, err) \
  ((void) (val), __builtin_expect ((err) & (1 << 28), 0))

# undef INTERNAL_SYSCALL_ERRNO
# define INTERNAL_SYSCALL_ERRNO(val, err)     (val)

# define LOADARGS_0(name, dummy)					      \
	r0 = name
# define LOADARGS_1(name, __arg1) \
	long int arg1 = (long int) (__arg1);	\
  LOADARGS_0(name, 0);					   \
	extern void __illegally_sized_syscall_arg1 (void); \
	if (__builtin_classify_type (__arg1) != 5 && sizeof (__arg1) > 4) \
	  __illegally_sized_syscall_arg1 (); \
	r3 = arg1
# define LOADARGS_2(name, __arg1, __arg2) \
	long int arg2 = (long int) (__arg2); \
	LOADARGS_1(name, __arg1); \
	extern void __illegally_sized_syscall_arg2 (void); \
	if (__builtin_classify_type (__arg2) != 5 && sizeof (__arg2) > 4) \
	  __illegally_sized_syscall_arg2 (); \
	r4 = arg2
# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
	long int arg3 = (long int) (__arg3); \
	LOADARGS_2(name, __arg1, __arg2); \
	extern void __illegally_sized_syscall_arg3 (void); \
	if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 4) \
	  __illegally_sized_syscall_arg3 (); \
	r5 = arg3
# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \
	long int arg4 = (long int) (__arg4); \
	LOADARGS_3(name, __arg1, __arg2, __arg3); \
	extern void __illegally_sized_syscall_arg4 (void); \
	if (__builtin_classify_type (__arg4) != 5 && sizeof (__arg4) > 4) \
	  __illegally_sized_syscall_arg4 (); \
	r6 = arg4
# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \
	long int arg5 = (long int) (__arg5); \
	LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \
	extern void __illegally_sized_syscall_arg5 (void); \
	if (__builtin_classify_type (__arg5) != 5 && sizeof (__arg5) > 4) \
	  __illegally_sized_syscall_arg5 (); \
	r7 = arg5
# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \
	long int arg6 = (long int) (__arg6); \
	LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \
	extern void __illegally_sized_syscall_arg6 (void); \
	if (__builtin_classify_type (__arg6) != 5 && sizeof (__arg6) > 4) \
	  __illegally_sized_syscall_arg6 (); \
	r8 = arg6

# define ASM_INPUT_0 "0" (r0)
# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)

#endif /* __ASSEMBLER__ */


/* Pointer mangling support.  */
#if IS_IN (rtld)
/* We cannot use the thread descriptor because in ld.so we use setjmp
   earlier than the descriptor is initialized.  */
#else
# ifdef __ASSEMBLER__
#  define PTR_MANGLE(reg, tmpreg) \
	lwz	tmpreg,POINTER_GUARD(r2); \
	xor	reg,tmpreg,reg
#  define PTR_MANGLE2(reg, tmpreg) \
	xor	reg,tmpreg,reg
#  define PTR_MANGLE3(destreg, reg, tmpreg) \
	lwz	tmpreg,POINTER_GUARD(r2); \
	xor	destreg,tmpreg,reg
#  define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
#  define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
#  define PTR_DEMANGLE3(destreg, reg, tmpreg) PTR_MANGLE3 (destreg, reg, tmpreg)
# else
#  define PTR_MANGLE(var) \
  (var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
#  define PTR_DEMANGLE(var)	PTR_MANGLE (var)
# endif
#endif

#endif /* linux/powerpc/powerpc32/sysdep.h */
Commit	Line	Data
b168057a	1	/* Copyright (C) 1992-2015 Free Software Foundation, Inc.
4cca6b86 UD	2	This file is part of the GNU C Library.
	3
	4	The GNU C Library is free software; you can redistribute it and/or
41bdb6e2 AJ	5	modify it under the terms of the GNU Lesser General Public
	6	License as published by the Free Software Foundation; either
	7	version 2.1 of the License, or (at your option) any later version.
4cca6b86 UD	8
	9	The GNU C Library is distributed in the hope that it will be useful,
	10	but WITHOUT ANY WARRANTY; without even the implied warranty of
	11	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
41bdb6e2	12	Lesser General Public License for more details.
4cca6b86	13
41bdb6e2	14	You should have received a copy of the GNU Lesser General Public
59ba27a6 PE	15	License along with the GNU C Library; if not, see
59ba27a6 PE	16	<http://www.gnu.org/licenses/>. */
4cca6b86	17
924102e7 UD	18	#ifndef _LINUX_POWERPC_SYSDEP_H
	19	#define _LINUX_POWERPC_SYSDEP_H 1
	20
be9cd93a	21	#include <sysdeps/unix/powerpc/sysdep.h>
00c2b3b9	22	#include <tls.h>
4cca6b86	23
5bfed16d UD	24	/* Some systen calls got renamed over time, but retained the same semantics.
	25	Handle them here so they can be catched by both C and assembler stubs in
	26	glibc. */
	27
	28	#ifdef __NR_pread64
	29	# ifdef __NR_pread
	30	# error "__NR_pread and __NR_pread64 both defined???"
	31	# endif
	32	# define __NR_pread __NR_pread64
	33	#endif
	34
	35	#ifdef __NR_pwrite64
	36	# ifdef __NR_pwrite
	37	# error "__NR_pwrite and __NR_pwrite64 both defined???"
	38	# endif
	39	# define __NR_pwrite __NR_pwrite64
	40	#endif
	41
4cca6b86 UD	42	/* For Linux we can use the system call table in the header file
	43	/usr/include/asm/unistd.h
	44	of the kernel. But these symbols do not follow the SYS_* syntax
	45	so we have to redefine the `SYS_ify' macro here. */
	46	#undef SYS_ify
965a54a4	47	#define SYS_ify(syscall_name) __NR_##syscall_name
4cca6b86	48
735d67f2 RM	49	#ifndef __ASSEMBLER__
	50
	51	# include <errno.h>
	52
8c2e201b UD	53	# ifdef SHARED
	54	# define INLINE_VSYSCALL(name, nr, args...) \
	55	({ \
	56	__label__ out; \
	57	__label__ iserr; \
	58	INTERNAL_SYSCALL_DECL (sc_err); \
	59	long int sc_ret; \
	60	\
	61	if (__vdso_##name != NULL) \
	62	{ \
471a1672 AB	63	sc_ret = \
471a1672 AB	64	INTERNAL_VSYSCALL_NCS (__vdso_##name, sc_err, long int, nr, ##args);\
8c2e201b UD	65	if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
	66	goto out; \
	67	if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \
	68	goto iserr; \
	69	} \
	70	\
	71	sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \
	72	if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
	73	{ \
	74	iserr: \
	75	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
	76	sc_ret = -1L; \
	77	} \
	78	out: \
	79	sc_ret; \
	80	})
	81	# else
	82	# define INLINE_VSYSCALL(name, nr, args...) \
	83	INLINE_SYSCALL (name, nr, ##args)
	84	# endif
	85
	86	# ifdef SHARED
	87	# define INTERNAL_VSYSCALL(name, err, nr, args...) \
	88	({ \
	89	__label__ out; \
	90	long int v_ret; \
	91	\
	92	if (__vdso_##name != NULL) \
	93	{ \
471a1672 AB	94	v_ret = \
471a1672 AB	95	INTERNAL_VSYSCALL_NCS (__vdso_##name, err, long int, nr, ##args); \
8c2e201b UD	96	if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \
	97	\|\| INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \
	98	goto out; \
	99	} \
	100	v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \
	101	out: \
	102	v_ret; \
	103	})
	104	# else
	105	# define INTERNAL_VSYSCALL(name, err, nr, args...) \
	106	INTERNAL_SYSCALL (name, err, nr, ##args)
	107	# endif
	108
471a1672	109	# define INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK(name, err, type, nr, args...) \
8c2e201b	110	({ \
471a1672	111	type sc_ret = ENOSYS; \
8c2e201b UD	112	\
8c2e201b UD	113	if (__vdso_##name != NULL) \
471a1672	114	sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, type, nr, ##args); \
8c2e201b UD	115	else \
	116	err = 1 << 28; \
	117	sc_ret; \
	118	})
	119
	120	/* List of system calls which are supported as vsyscalls. */
	121	# define HAVE_CLOCK_GETRES_VSYSCALL 1
	122	# define HAVE_CLOCK_GETTIME_VSYSCALL 1
	123
	124	/* Define a macro which expands inline into the wrapper code for a VDSO
	125	call. This use is for internal calls that do not need to handle errors
	126	normally. It will never touch errno.
	127	On powerpc a system call basically clobbers the same registers like a
	128	function call, with the exception of LR (which is needed for the
	129	"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
	130	an error return status). */
471a1672	131	# define INTERNAL_VSYSCALL_NCS(funcptr, err, type, nr, args...) \
8c2e201b UD	132	({ \
	133	register void *r0 __asm__ ("r0"); \
	134	register long int r3 __asm__ ("r3"); \
	135	register long int r4 __asm__ ("r4"); \
	136	register long int r5 __asm__ ("r5"); \
	137	register long int r6 __asm__ ("r6"); \
	138	register long int r7 __asm__ ("r7"); \
	139	register long int r8 __asm__ ("r8"); \
	140	register long int r9 __asm__ ("r9"); \
	141	register long int r10 __asm__ ("r10"); \
	142	register long int r11 __asm__ ("r11"); \
	143	register long int r12 __asm__ ("r12"); \
471a1672	144	register type rval __asm__ ("r3"); \
8c2e201b UD	145	LOADARGS_##nr (funcptr, args); \
	146	__asm__ __volatile__ \
	147	("mtctr %0\n\t" \
	148	"bctrl\n\t" \
	149	"mfcr %0" \
471a1672 AB	150	: "+r" (r0), "+r" (r3), "+r" (r4), "+r" (r5), "+r" (r6), "+r" (r7), \
	151	"+r" (r8), "+r" (r9), "+r" (r10), "+r" (r11), "+r" (r12) \
	152	: : "cr0", "ctr", "lr", "memory"); \
8c2e201b	153	err = (long int) r0; \
471a1672 AB	154	__asm__ __volatile__ ("" : "=r" (rval) : "r" (r3), "r" (r4)); \
471a1672 AB	155	rval; \
8c2e201b UD	156	})
8c2e201b UD	157
735d67f2	158	# undef INLINE_SYSCALL
704bb2fd RM	159	# define INLINE_SYSCALL(name, nr, args...) \
704bb2fd RM	160	({ \
b398ae3c	161	INTERNAL_SYSCALL_DECL (sc_err); \
c67a469f	162	long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
b398ae3c	163	if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
704bb2fd	164	{ \
b398ae3c UD	165	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
b398ae3c UD	166	sc_ret = -1L; \
704bb2fd	167	} \
b398ae3c	168	sc_ret; \
735d67f2 RM	169	})
735d67f2 RM	170
73e9ae88 UD	171	/* Define a macro which expands inline into the wrapper code for a system
73e9ae88 UD	172	call. This use is for internal calls that do not need to handle errors
b398ae3c UD	173	normally. It will never touch errno.
	174	On powerpc a system call basically clobbers the same registers like a
	175	function call, with the exception of LR (which is needed for the
	176	"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
	177	an error return status). */
73e9ae88	178
6aca81bb	179	# undef INTERNAL_SYSCALL_DECL
20f0018d	180	# define INTERNAL_SYSCALL_DECL(err) long int err __attribute__ ((unused))
6aca81bb	181
52f3d213	182	# undef INTERNAL_SYSCALL
2edb61e3	183	# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
73e9ae88	184	({ \
c67a469f UD	185	register long int r0 __asm__ ("r0"); \
	186	register long int r3 __asm__ ("r3"); \
	187	register long int r4 __asm__ ("r4"); \
	188	register long int r5 __asm__ ("r5"); \
	189	register long int r6 __asm__ ("r6"); \
	190	register long int r7 __asm__ ("r7"); \
	191	register long int r8 __asm__ ("r8"); \
	192	register long int r9 __asm__ ("r9"); \
	193	register long int r10 __asm__ ("r10"); \
	194	register long int r11 __asm__ ("r11"); \
	195	register long int r12 __asm__ ("r12"); \
471a1672	196	LOADARGS_##nr(name, args); \
73e9ae88	197	__asm__ __volatile__ \
b398ae3c UD	198	("sc \n\t" \
b398ae3c UD	199	"mfcr %0" \
73e9ae88 UD	200	: "=&r" (r0), \
	201	"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
	202	"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
	203	: ASM_INPUT_##nr \
	204	: "cr0", "ctr", "memory"); \
b398ae3c	205	err = r0; \
73e9ae88 UD	206	(int) r3; \
73e9ae88 UD	207	})
2edb61e3 UD	208	# define INTERNAL_SYSCALL(name, err, nr, args...) \
2edb61e3 UD	209	INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
6aca81bb	210
52f3d213	211	# undef INTERNAL_SYSCALL_ERROR_P
6aca81bb	212	# define INTERNAL_SYSCALL_ERROR_P(val, err) \
a2274a08	213	((void) (val), __builtin_expect ((err) & (1 << 28), 0))
6aca81bb	214
52f3d213	215	# undef INTERNAL_SYSCALL_ERRNO
b398ae3c	216	# define INTERNAL_SYSCALL_ERRNO(val, err) (val)
73e9ae88	217
8c2e201b	218	# define LOADARGS_0(name, dummy) \
2edb61e3	219	r0 = name
c67a469f UD	220	# define LOADARGS_1(name, __arg1) \
c67a469f UD	221	long int arg1 = (long int) (__arg1); \
8c2e201b	222	LOADARGS_0(name, 0); \
2edb61e3	223	extern void __illegally_sized_syscall_arg1 (void); \
c67a469f	224	if (__builtin_classify_type (__arg1) != 5 && sizeof (__arg1) > 4) \
2edb61e3	225	__illegally_sized_syscall_arg1 (); \
c67a469f UD	226	r3 = arg1
	227	# define LOADARGS_2(name, __arg1, __arg2) \
	228	long int arg2 = (long int) (__arg2); \
	229	LOADARGS_1(name, __arg1); \
2edb61e3	230	extern void __illegally_sized_syscall_arg2 (void); \
c67a469f	231	if (__builtin_classify_type (__arg2) != 5 && sizeof (__arg2) > 4) \
2edb61e3	232	__illegally_sized_syscall_arg2 (); \
c67a469f UD	233	r4 = arg2
	234	# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
	235	long int arg3 = (long int) (__arg3); \
	236	LOADARGS_2(name, __arg1, __arg2); \
2edb61e3	237	extern void __illegally_sized_syscall_arg3 (void); \
c67a469f	238	if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 4) \
2edb61e3	239	__illegally_sized_syscall_arg3 (); \
c67a469f UD	240	r5 = arg3
	241	# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \
	242	long int arg4 = (long int) (__arg4); \
	243	LOADARGS_3(name, __arg1, __arg2, __arg3); \
2edb61e3	244	extern void __illegally_sized_syscall_arg4 (void); \
c67a469f	245	if (__builtin_classify_type (__arg4) != 5 && sizeof (__arg4) > 4) \
2edb61e3	246	__illegally_sized_syscall_arg4 (); \
c67a469f UD	247	r6 = arg4
	248	# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \
	249	long int arg5 = (long int) (__arg5); \
	250	LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \
2edb61e3	251	extern void __illegally_sized_syscall_arg5 (void); \
c67a469f	252	if (__builtin_classify_type (__arg5) != 5 && sizeof (__arg5) > 4) \
2edb61e3	253	__illegally_sized_syscall_arg5 (); \
c67a469f UD	254	r7 = arg5
	255	# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \
	256	long int arg6 = (long int) (__arg6); \
	257	LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \
2edb61e3	258	extern void __illegally_sized_syscall_arg6 (void); \
c67a469f	259	if (__builtin_classify_type (__arg6) != 5 && sizeof (__arg6) > 4) \
2edb61e3	260	__illegally_sized_syscall_arg6 (); \
c67a469f	261	r8 = arg6
735d67f2	262
704bb2fd RM	263	# define ASM_INPUT_0 "0" (r0)
	264	# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
	265	# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
	266	# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
	267	# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
	268	# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
	269	# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)
735d67f2 RM	270
	271	#endif /* __ASSEMBLER__ */
	272
	273
00c2b3b9	274	/* Pointer mangling support. */
a3848485	275	#if IS_IN (rtld)
00c2b3b9 UD	276	/* We cannot use the thread descriptor because in ld.so we use setjmp
	277	earlier than the descriptor is initialized. */
	278	#else
	279	# ifdef __ASSEMBLER__
	280	# define PTR_MANGLE(reg, tmpreg) \
	281	lwz tmpreg,POINTER_GUARD(r2); \
	282	xor reg,tmpreg,reg
5ad77144	283	# define PTR_MANGLE2(reg, tmpreg) \
4e54d7e4	284	xor reg,tmpreg,reg
4a132246 UD	285	# define PTR_MANGLE3(destreg, reg, tmpreg) \
	286	lwz tmpreg,POINTER_GUARD(r2); \
	287	xor destreg,tmpreg,reg
5ad77144 UD	288	# define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
5ad77144 UD	289	# define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
4a132246	290	# define PTR_DEMANGLE3(destreg, reg, tmpreg) PTR_MANGLE3 (destreg, reg, tmpreg)
00c2b3b9 UD	291	# else
00c2b3b9 UD	292	# define PTR_MANGLE(var) \
db169ed5	293	(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
00c2b3b9 UD	294	# define PTR_DEMANGLE(var) PTR_MANGLE (var)
	295	# endif
	296	#endif
	297
b398ae3c	298	#endif /* linux/powerpc/powerpc32/sysdep.h */