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

/* Copyright (C) 1992,1997-2006,2012 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, 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, 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, nr, args...)	      \
  ({									      \
    long int sc_ret = ENOSYS;						      \
									      \
    if (__vdso_##name != NULL)						      \
      sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, 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, 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");				      \
    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)	      \
       : ASM_INPUT_##nr							      \
       : "cr0", "ctr", "lr", "memory");					      \
    err = (long int) r0;						      \
    (int) r3;								      \
  })

# 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

# 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 defined NOT_IN_libc && defined 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
965a54a4	1	/* Copyright (C) 1992,1997-2006,2012 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	{ \
	63	sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, sc_err, nr, ##args); \
	64	if (!INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
	65	goto out; \
	66	if (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err) != ENOSYS) \
	67	goto iserr; \
	68	} \
	69	\
	70	sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, ##args); \
	71	if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
	72	{ \
	73	iserr: \
	74	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
	75	sc_ret = -1L; \
	76	} \
	77	out: \
	78	sc_ret; \
	79	})
	80	# else
	81	# define INLINE_VSYSCALL(name, nr, args...) \
	82	INLINE_SYSCALL (name, nr, ##args)
	83	# endif
	84
	85	# ifdef SHARED
	86	# define INTERNAL_VSYSCALL(name, err, nr, args...) \
	87	({ \
	88	__label__ out; \
	89	long int v_ret; \
	90	\
	91	if (__vdso_##name != NULL) \
	92	{ \
	93	v_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, nr, ##args); \
	94	if (!INTERNAL_SYSCALL_ERROR_P (v_ret, err) \
	95	\|\| INTERNAL_SYSCALL_ERRNO (v_ret, err) != ENOSYS) \
	96	goto out; \
	97	} \
	98	v_ret = INTERNAL_SYSCALL (name, err, nr, ##args); \
	99	out: \
	100	v_ret; \
	101	})
	102	# else
	103	# define INTERNAL_VSYSCALL(name, err, nr, args...) \
	104	INTERNAL_SYSCALL (name, err, nr, ##args)
	105	# endif
	106
	107	# define INTERNAL_VSYSCALL_NO_SYSCALL_FALLBACK(name, err, nr, args...) \
	108	({ \
	109	long int sc_ret = ENOSYS; \
	110	\
	111	if (__vdso_##name != NULL) \
	112	sc_ret = INTERNAL_VSYSCALL_NCS (__vdso_##name, err, nr, ##args); \
	113	else \
	114	err = 1 << 28; \
	115	sc_ret; \
	116	})
117
118	/* List of system calls which are supported as vsyscalls. */
119	# define HAVE_CLOCK_GETRES_VSYSCALL 1
120	# define HAVE_CLOCK_GETTIME_VSYSCALL 1
121
122	/* Define a macro which expands inline into the wrapper code for a VDSO
123	call. This use is for internal calls that do not need to handle errors
124	normally. It will never touch errno.
125	On powerpc a system call basically clobbers the same registers like a
126	function call, with the exception of LR (which is needed for the
127	"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
128	an error return status). */
129	# define INTERNAL_VSYSCALL_NCS(funcptr, err, nr, args...) \
130	({ \
131	register void *r0 __asm__ ("r0"); \
132	register long int r3 __asm__ ("r3"); \
133	register long int r4 __asm__ ("r4"); \
134	register long int r5 __asm__ ("r5"); \
135	register long int r6 __asm__ ("r6"); \
136	register long int r7 __asm__ ("r7"); \
137	register long int r8 __asm__ ("r8"); \
138	register long int r9 __asm__ ("r9"); \
139	register long int r10 __asm__ ("r10"); \
140	register long int r11 __asm__ ("r11"); \
141	register long int r12 __asm__ ("r12"); \
142	LOADARGS_##nr (funcptr, args); \
143	__asm__ __volatile__ \
144	("mtctr %0\n\t" \
145	"bctrl\n\t" \
146	"mfcr %0" \
147	: "=&r" (r0), \
148	"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
149	"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
150	: ASM_INPUT_##nr \
151	: "cr0", "ctr", "lr", "memory"); \
152	err = (long int) r0; \
153	(int) r3; \
154	})
155
735d67f2	156	# undef INLINE_SYSCALL
704bb2fd RM	157	# define INLINE_SYSCALL(name, nr, args...) \
704bb2fd RM	158	({ \
b398ae3c	159	INTERNAL_SYSCALL_DECL (sc_err); \
c67a469f	160	long int sc_ret = INTERNAL_SYSCALL (name, sc_err, nr, args); \
b398ae3c	161	if (INTERNAL_SYSCALL_ERROR_P (sc_ret, sc_err)) \
704bb2fd	162	{ \
b398ae3c UD	163	__set_errno (INTERNAL_SYSCALL_ERRNO (sc_ret, sc_err)); \
b398ae3c UD	164	sc_ret = -1L; \
704bb2fd	165	} \
b398ae3c	166	sc_ret; \
735d67f2 RM	167	})
735d67f2 RM	168
73e9ae88 UD	169	/* Define a macro which expands inline into the wrapper code for a system
73e9ae88 UD	170	call. This use is for internal calls that do not need to handle errors
b398ae3c UD	171	normally. It will never touch errno.
	172	On powerpc a system call basically clobbers the same registers like a
	173	function call, with the exception of LR (which is needed for the
	174	"sc; bnslr+" sequence) and CR (where only CR0.SO is clobbered to signal
	175	an error return status). */
73e9ae88	176
6aca81bb	177	# undef INTERNAL_SYSCALL_DECL
c67a469f	178	# define INTERNAL_SYSCALL_DECL(err) long int err
6aca81bb	179
52f3d213	180	# undef INTERNAL_SYSCALL
2edb61e3	181	# define INTERNAL_SYSCALL_NCS(name, err, nr, args...) \
73e9ae88	182	({ \
c67a469f UD	183	register long int r0 __asm__ ("r0"); \
	184	register long int r3 __asm__ ("r3"); \
	185	register long int r4 __asm__ ("r4"); \
	186	register long int r5 __asm__ ("r5"); \
	187	register long int r6 __asm__ ("r6"); \
	188	register long int r7 __asm__ ("r7"); \
	189	register long int r8 __asm__ ("r8"); \
	190	register long int r9 __asm__ ("r9"); \
	191	register long int r10 __asm__ ("r10"); \
	192	register long int r11 __asm__ ("r11"); \
	193	register long int r12 __asm__ ("r12"); \
8c2e201b	194	LOADARGS_##nr(name, args); \
73e9ae88	195	__asm__ __volatile__ \
b398ae3c UD	196	("sc \n\t" \
b398ae3c UD	197	"mfcr %0" \
73e9ae88 UD	198	: "=&r" (r0), \
	199	"=&r" (r3), "=&r" (r4), "=&r" (r5), "=&r" (r6), "=&r" (r7), \
	200	"=&r" (r8), "=&r" (r9), "=&r" (r10), "=&r" (r11), "=&r" (r12) \
	201	: ASM_INPUT_##nr \
	202	: "cr0", "ctr", "memory"); \
b398ae3c	203	err = r0; \
73e9ae88 UD	204	(int) r3; \
73e9ae88 UD	205	})
2edb61e3 UD	206	# define INTERNAL_SYSCALL(name, err, nr, args...) \
2edb61e3 UD	207	INTERNAL_SYSCALL_NCS (__NR_##name, err, nr, ##args)
6aca81bb	208
52f3d213	209	# undef INTERNAL_SYSCALL_ERROR_P
6aca81bb	210	# define INTERNAL_SYSCALL_ERROR_P(val, err) \
a2274a08	211	((void) (val), __builtin_expect ((err) & (1 << 28), 0))
6aca81bb	212
52f3d213	213	# undef INTERNAL_SYSCALL_ERRNO
b398ae3c	214	# define INTERNAL_SYSCALL_ERRNO(val, err) (val)
73e9ae88	215
8c2e201b	216	# define LOADARGS_0(name, dummy) \
2edb61e3	217	r0 = name
c67a469f UD	218	# define LOADARGS_1(name, __arg1) \
c67a469f UD	219	long int arg1 = (long int) (__arg1); \
8c2e201b	220	LOADARGS_0(name, 0); \
2edb61e3	221	extern void __illegally_sized_syscall_arg1 (void); \
c67a469f	222	if (__builtin_classify_type (__arg1) != 5 && sizeof (__arg1) > 4) \
2edb61e3	223	__illegally_sized_syscall_arg1 (); \
c67a469f UD	224	r3 = arg1
	225	# define LOADARGS_2(name, __arg1, __arg2) \
	226	long int arg2 = (long int) (__arg2); \
	227	LOADARGS_1(name, __arg1); \
2edb61e3	228	extern void __illegally_sized_syscall_arg2 (void); \
c67a469f	229	if (__builtin_classify_type (__arg2) != 5 && sizeof (__arg2) > 4) \
2edb61e3	230	__illegally_sized_syscall_arg2 (); \
c67a469f UD	231	r4 = arg2
	232	# define LOADARGS_3(name, __arg1, __arg2, __arg3) \
	233	long int arg3 = (long int) (__arg3); \
	234	LOADARGS_2(name, __arg1, __arg2); \
2edb61e3	235	extern void __illegally_sized_syscall_arg3 (void); \
c67a469f	236	if (__builtin_classify_type (__arg3) != 5 && sizeof (__arg3) > 4) \
2edb61e3	237	__illegally_sized_syscall_arg3 (); \
c67a469f UD	238	r5 = arg3
	239	# define LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4) \
	240	long int arg4 = (long int) (__arg4); \
	241	LOADARGS_3(name, __arg1, __arg2, __arg3); \
2edb61e3	242	extern void __illegally_sized_syscall_arg4 (void); \
c67a469f	243	if (__builtin_classify_type (__arg4) != 5 && sizeof (__arg4) > 4) \
2edb61e3	244	__illegally_sized_syscall_arg4 (); \
c67a469f UD	245	r6 = arg4
	246	# define LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5) \
	247	long int arg5 = (long int) (__arg5); \
	248	LOADARGS_4(name, __arg1, __arg2, __arg3, __arg4); \
2edb61e3	249	extern void __illegally_sized_syscall_arg5 (void); \
c67a469f	250	if (__builtin_classify_type (__arg5) != 5 && sizeof (__arg5) > 4) \
2edb61e3	251	__illegally_sized_syscall_arg5 (); \
c67a469f UD	252	r7 = arg5
	253	# define LOADARGS_6(name, __arg1, __arg2, __arg3, __arg4, __arg5, __arg6) \
	254	long int arg6 = (long int) (__arg6); \
	255	LOADARGS_5(name, __arg1, __arg2, __arg3, __arg4, __arg5); \
2edb61e3	256	extern void __illegally_sized_syscall_arg6 (void); \
c67a469f	257	if (__builtin_classify_type (__arg6) != 5 && sizeof (__arg6) > 4) \
2edb61e3	258	__illegally_sized_syscall_arg6 (); \
c67a469f	259	r8 = arg6
735d67f2	260
704bb2fd RM	261	# define ASM_INPUT_0 "0" (r0)
	262	# define ASM_INPUT_1 ASM_INPUT_0, "1" (r3)
	263	# define ASM_INPUT_2 ASM_INPUT_1, "2" (r4)
	264	# define ASM_INPUT_3 ASM_INPUT_2, "3" (r5)
	265	# define ASM_INPUT_4 ASM_INPUT_3, "4" (r6)
	266	# define ASM_INPUT_5 ASM_INPUT_4, "5" (r7)
	267	# define ASM_INPUT_6 ASM_INPUT_5, "6" (r8)
735d67f2 RM	268
	269	#endif /* __ASSEMBLER__ */
	270
	271
00c2b3b9 UD	272	/* Pointer mangling support. */
	273	#if defined NOT_IN_libc && defined IS_IN_rtld
	274	/* We cannot use the thread descriptor because in ld.so we use setjmp
	275	earlier than the descriptor is initialized. */
	276	#else
	277	# ifdef __ASSEMBLER__
	278	# define PTR_MANGLE(reg, tmpreg) \
	279	lwz tmpreg,POINTER_GUARD(r2); \
	280	xor reg,tmpreg,reg
5ad77144	281	# define PTR_MANGLE2(reg, tmpreg) \
4e54d7e4	282	xor reg,tmpreg,reg
4a132246 UD	283	# define PTR_MANGLE3(destreg, reg, tmpreg) \
	284	lwz tmpreg,POINTER_GUARD(r2); \
	285	xor destreg,tmpreg,reg
5ad77144 UD	286	# define PTR_DEMANGLE(reg, tmpreg) PTR_MANGLE (reg, tmpreg)
5ad77144 UD	287	# define PTR_DEMANGLE2(reg, tmpreg) PTR_MANGLE2 (reg, tmpreg)
4a132246	288	# define PTR_DEMANGLE3(destreg, reg, tmpreg) PTR_MANGLE3 (destreg, reg, tmpreg)
00c2b3b9 UD	289	# else
00c2b3b9 UD	290	# define PTR_MANGLE(var) \
db169ed5	291	(var) = (__typeof (var)) ((uintptr_t) (var) ^ THREAD_GET_POINTER_GUARD ())
00c2b3b9 UD	292	# define PTR_DEMANGLE(var) PTR_MANGLE (var)
	293	# endif
	294	#endif
	295
b398ae3c	296	#endif /* linux/powerpc/powerpc32/sysdep.h */