[thirdparty/glibc.git] / sysdeps / unix / sysv / linux / mips / mips32 / sysdep.h

/* Copyright (C) 2000, 2002, 2003 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, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifndef _LINUX_MIPS_MIPS32_SYSDEP_H
#define _LINUX_MIPS_MIPS32_SYSDEP_H 1

/* There is some commonality.  */
#include <sysdeps/unix/mips/mips32/sysdep.h>

/* 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
#ifdef __STDC__
# define SYS_ify(syscall_name)	__NR_##syscall_name
#else
# define SYS_ify(syscall_name)	__NR_/**/syscall_name
#endif

#ifdef __ASSEMBLER__

/* We don't want the label for the error handler to be visible in the symbol
   table when we define it here.  */
#ifdef __PIC__
# define SYSCALL_ERROR_LABEL 99b
#endif

#else   /* ! __ASSEMBLER__ */

/* Define a macro which expands into the inline wrapper code for a system
   call.  */
#undef INLINE_SYSCALL
#define INLINE_SYSCALL(name, nr, args...)                               \
  ({ INTERNAL_SYSCALL_DECL(err);					\
     long result_var = INTERNAL_SYSCALL (name, err, nr, args);      	\
     if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) )  		\
       {                                                                \
         __set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err));      	\
         result_var = -1L;                               		\
       }                                                                \
     result_var; })

#undef INTERNAL_SYSCALL_DECL
#define INTERNAL_SYSCALL_DECL(err) long err

#undef INTERNAL_SYSCALL_ERROR_P
#define INTERNAL_SYSCALL_ERROR_P(val, err)   ((long) (err))

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

#undef INTERNAL_SYSCALL
#define INTERNAL_SYSCALL(name, err, nr, args...) internal_syscall##nr(name, err, args)

#define internal_syscall0(name, err, dummy...) 				\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a3 asm("$7"); 					\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"li\t$2, %2\t\t\t# " #name "\n\t"				\
	"syscall\n\t" 							\
	".set reorder" 							\
	: "=r" (__v0), "=r" (__a3) 					\
	: "i" (SYS_ify(name))						\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall1(name, err, arg1) 				\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a3 asm("$7"); 					\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"li\t$2, %3\t\t\t# " #name "\n\t"				\
	"syscall\n\t" 							\
	".set reorder" 							\
	: "=r" (__v0), "=r" (__a3) 					\
	: "r" (__a0), "i" (SYS_ify(name)) 				\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall2(name, err, arg1, arg2) 			\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a3 asm("$7"); 					\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"li\t$2, %4\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	".set\treorder" 						\
	: "=r" (__v0), "=r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "i" (SYS_ify(name))			\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall3(name, err, arg1, arg2, arg3) 			\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a2 asm("$6") = (long) arg3; 			\
	register long __a3 asm("$7"); 					\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"li\t$2, %5\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	".set\treorder" 						\
	: "=r" (__v0), "=r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) 	\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall4(name, err, arg1, arg2, arg3, arg4) 		\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a2 asm("$6") = (long) arg3; 			\
	register long __a3 asm("$7") = (long) arg4; 			\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"li\t$2, %5\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	".set\treorder" 						\
	: "=r" (__v0), "+r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) 	\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall5(name, err, arg1, arg2, arg3, arg4, arg5) 	\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a2 asm("$6") = (long) arg3; 			\
	register long __a3 asm("$7") = (long) arg4; 			\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"lw\t$2, %6\n\t" 						\
	"subu\t$29, 32\n\t" 						\
	"sw\t$2, 16($29)\n\t" 						\
	"li\t$2, %5\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	"addiu\t$29, 32\n\t" 						\
	".set\treorder" 						\
	: "=r" (__v0), "+r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), 	\
	  "m" ((long)arg5) 						\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall6(name, err, arg1, arg2, arg3, arg4, arg5, arg6)\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a2 asm("$6") = (long) arg3; 			\
	register long __a3 asm("$7") = (long) arg4; 			\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"lw\t$2, %6\n\t" 						\
	"lw\t$8, %7\n\t" 						\
	"subu\t$29, 32\n\t" 						\
	"sw\t$2, 16($29)\n\t" 						\
	"sw\t$8, 20($29)\n\t" 						\
	"li\t$2, %5\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	"addiu\t$29, 32\n\t" 						\
	".set\treorder" 						\
	: "=r" (__v0), "+r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), 	\
	  "m" ((long)arg5), "m" ((long)arg6)				\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define internal_syscall7(name, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
({ 									\
	long _sys_result;						\
									\
	{								\
	register long __v0 asm("$2"); 					\
	register long __a0 asm("$4") = (long) arg1; 			\
	register long __a1 asm("$5") = (long) arg2; 			\
	register long __a2 asm("$6") = (long) arg3; 			\
	register long __a3 asm("$7") = (long) arg4; 			\
	__asm__ volatile ( 						\
	".set\tnoreorder\n\t" 						\
	"lw\t$2, %6\n\t" 						\
	"lw\t$8, %7\n\t" 						\
	"lw\t$9, %8\n\t" 						\
	"subu\t$29, 32\n\t" 						\
	"sw\t$2, 16($29)\n\t" 						\
	"sw\t$8, 20($29)\n\t" 						\
	"sw\t$9, 24($29)\n\t" 						\
	"li\t$2, %5\t\t\t# " #name "\n\t" 				\
	"syscall\n\t" 							\
	"addiu\t$29, 32\n\t" 						\
	".set\treorder" 						\
	: "=r" (__v0), "+r" (__a3) 					\
	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), 	\
	  "m" ((long)arg5), "m" ((long)arg6), "m" ((long)arg7)		\
	: __SYSCALL_CLOBBERS); 						\
	err = __a3;							\
	_sys_result = __v0;						\
	}								\
	_sys_result;							\
})

#define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25"

#endif /* __ASSEMBLER__ */

#endif /* linux/mips/mips32/sysdep.h */
Commit	Line	Data
ef055a74	1	/* Copyright (C) 2000, 2002, 2003 Free Software Foundation, Inc.
87af90e7 AJ	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
3214b89b 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.
87af90e7 AJ	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
3214b89b	12	Lesser General Public License for more details.
87af90e7	13
3214b89b AJ	14	You should have received a copy of the GNU Lesser General Public
	15	License along with the GNU C Library; if not, write to the Free
	16	Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
	17	02111-1307 USA. */
87af90e7	18
ef055a74 AO	19	#ifndef _LINUX_MIPS_MIPS32_SYSDEP_H
ef055a74 AO	20	#define _LINUX_MIPS_MIPS32_SYSDEP_H 1
87af90e7 AJ	21
87af90e7 AJ	22	/* There is some commonality. */
ef055a74	23	#include <sysdeps/unix/mips/mips32/sysdep.h>
87af90e7 AJ	24
	25	/* For Linux we can use the system call table in the header file
	26	/usr/include/asm/unistd.h
	27	of the kernel. But these symbols do not follow the SYS_* syntax
	28	so we have to redefine the `SYS_ify' macro here. */
	29	#undef SYS_ify
	30	#ifdef __STDC__
	31	# define SYS_ify(syscall_name) __NR_##syscall_name
	32	#else
	33	# define SYS_ify(syscall_name) __NR_/**/syscall_name
	34	#endif
	35
c25d936b UD	36	#ifdef __ASSEMBLER__
	37
	38	/* We don't want the label for the error handler to be visible in the symbol
	39	table when we define it here. */
	40	#ifdef __PIC__
	41	# define SYSCALL_ERROR_LABEL 99b
	42	#endif
	43
	44	#else /* ! __ASSEMBLER__ */
9da3df10 UD	45
	46	/* Define a macro which expands into the inline wrapper code for a system
	47	call. */
	48	#undef INLINE_SYSCALL
	49	#define INLINE_SYSCALL(name, nr, args...) \
	50	({ INTERNAL_SYSCALL_DECL(err); \
	51	long result_var = INTERNAL_SYSCALL (name, err, nr, args); \
	52	if ( INTERNAL_SYSCALL_ERROR_P (result_var, err) ) \
	53	{ \
	54	__set_errno (INTERNAL_SYSCALL_ERRNO (result_var, err)); \
	55	result_var = -1L; \
	56	} \
	57	result_var; })
	58
	59	#undef INTERNAL_SYSCALL_DECL
	60	#define INTERNAL_SYSCALL_DECL(err) long err
	61
	62	#undef INTERNAL_SYSCALL_ERROR_P
	63	#define INTERNAL_SYSCALL_ERROR_P(val, err) ((long) (err))
	64
	65	#undef INTERNAL_SYSCALL_ERRNO
	66	#define INTERNAL_SYSCALL_ERRNO(val, err) (val)
	67
	68	#undef INTERNAL_SYSCALL
	69	#define INTERNAL_SYSCALL(name, err, nr, args...) internal_syscall##nr(name, err, args)
	70
	71	#define internal_syscall0(name, err, dummy...) \
	72	({ \
	73	long _sys_result; \
	74	\
	75	{ \
	76	register long __v0 asm("$2"); \
	77	register long __a3 asm("$7"); \
	78	__asm__ volatile ( \
	79	".set\tnoreorder\n\t" \
	80	"li\t$2, %2\t\t\t# " #name "\n\t" \
	81	"syscall\n\t" \
	82	".set reorder" \
	83	: "=r" (__v0), "=r" (__a3) \
	84	: "i" (SYS_ify(name)) \
	85	: __SYSCALL_CLOBBERS); \
	86	err = __a3; \
	87	_sys_result = __v0; \
	88	} \
	89	_sys_result; \
	90	})
	91
	92	#define internal_syscall1(name, err, arg1) \
	93	({ \
	94	long _sys_result; \
	95	\
	96	{ \
	97	register long __v0 asm("$2"); \
	98	register long __a0 asm("$4") = (long) arg1; \
	99	register long __a3 asm("$7"); \
	100	__asm__ volatile ( \
	101	".set\tnoreorder\n\t" \
	102	"li\t$2, %3\t\t\t# " #name "\n\t" \
	103	"syscall\n\t" \
	104	".set reorder" \
	105	: "=r" (__v0), "=r" (__a3) \
	106	: "r" (__a0), "i" (SYS_ify(name)) \
	107	: __SYSCALL_CLOBBERS); \
	108	err = __a3; \
109	_sys_result = __v0; \
110	} \
111	_sys_result; \
112	})
113
114	#define internal_syscall2(name, err, arg1, arg2) \
115	({ \
116	long _sys_result; \
117	\
118	{ \
119	register long __v0 asm("$2"); \
120	register long __a0 asm("$4") = (long) arg1; \
121	register long __a1 asm("$5") = (long) arg2; \
122	register long __a3 asm("$7"); \
123	__asm__ volatile ( \
124	".set\tnoreorder\n\t" \
125	"li\t$2, %4\t\t\t# " #name "\n\t" \
126	"syscall\n\t" \
127	".set\treorder" \
128	: "=r" (__v0), "=r" (__a3) \
129	: "r" (__a0), "r" (__a1), "i" (SYS_ify(name)) \
130	: __SYSCALL_CLOBBERS); \
131	err = __a3; \
132	_sys_result = __v0; \
133	} \
134	_sys_result; \
135	})
136
137	#define internal_syscall3(name, err, arg1, arg2, arg3) \
138	({ \
139	long _sys_result; \
140	\
141	{ \
142	register long __v0 asm("$2"); \
143	register long __a0 asm("$4") = (long) arg1; \
144	register long __a1 asm("$5") = (long) arg2; \
145	register long __a2 asm("$6") = (long) arg3; \
146	register long __a3 asm("$7"); \
147	__asm__ volatile ( \
148	".set\tnoreorder\n\t" \
149	"li\t$2, %5\t\t\t# " #name "\n\t" \
150	"syscall\n\t" \
151	".set\treorder" \
152	: "=r" (__v0), "=r" (__a3) \
153	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \
154	: __SYSCALL_CLOBBERS); \
155	err = __a3; \
156	_sys_result = __v0; \
157	} \
158	_sys_result; \
159	})
160
161	#define internal_syscall4(name, err, arg1, arg2, arg3, arg4) \
162	({ \
163	long _sys_result; \
164	\
165	{ \
166	register long __v0 asm("$2"); \
167	register long __a0 asm("$4") = (long) arg1; \
168	register long __a1 asm("$5") = (long) arg2; \
169	register long __a2 asm("$6") = (long) arg3; \
170	register long __a3 asm("$7") = (long) arg4; \
171	__asm__ volatile ( \
172	".set\tnoreorder\n\t" \
173	"li\t$2, %5\t\t\t# " #name "\n\t" \
174	"syscall\n\t" \
175	".set\treorder" \
176	: "=r" (__v0), "+r" (__a3) \
177	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)) \
178	: __SYSCALL_CLOBBERS); \
179	err = __a3; \
180	_sys_result = __v0; \
181	} \
182	_sys_result; \
183	})
184
185	#define internal_syscall5(name, err, arg1, arg2, arg3, arg4, arg5) \
186	({ \
187	long _sys_result; \
188	\
189	{ \
190	register long __v0 asm("$2"); \
191	register long __a0 asm("$4") = (long) arg1; \
192	register long __a1 asm("$5") = (long) arg2; \
193	register long __a2 asm("$6") = (long) arg3; \
194	register long __a3 asm("$7") = (long) arg4; \
195	__asm__ volatile ( \
196	".set\tnoreorder\n\t" \
197	"lw\t$2, %6\n\t" \
198	"subu\t$29, 32\n\t" \
199	"sw\t$2, 16($29)\n\t" \
200	"li\t$2, %5\t\t\t# " #name "\n\t" \
201	"syscall\n\t" \
202	"addiu\t$29, 32\n\t" \
203	".set\treorder" \
204	: "=r" (__v0), "+r" (__a3) \
205	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
206	"m" ((long)arg5) \
207	: __SYSCALL_CLOBBERS); \
208	err = __a3; \
209	_sys_result = __v0; \
210	} \
211	_sys_result; \
212	})
213
214	#define internal_syscall6(name, err, arg1, arg2, arg3, arg4, arg5, arg6)\
215	({ \
216	long _sys_result; \
217	\
218	{ \
219	register long __v0 asm("$2"); \
220	register long __a0 asm("$4") = (long) arg1; \
221	register long __a1 asm("$5") = (long) arg2; \
222	register long __a2 asm("$6") = (long) arg3; \
223	register long __a3 asm("$7") = (long) arg4; \
224	__asm__ volatile ( \
225	".set\tnoreorder\n\t" \
226	"lw\t$2, %6\n\t" \
227	"lw\t$8, %7\n\t" \
228	"subu\t$29, 32\n\t" \
229	"sw\t$2, 16($29)\n\t" \
230	"sw\t$8, 20($29)\n\t" \
231	"li\t$2, %5\t\t\t# " #name "\n\t" \
232	"syscall\n\t" \
233	"addiu\t$29, 32\n\t" \
234	".set\treorder" \
235	: "=r" (__v0), "+r" (__a3) \
236	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
237	"m" ((long)arg5), "m" ((long)arg6) \
238	: __SYSCALL_CLOBBERS); \
239	err = __a3; \
240	_sys_result = __v0; \
241	} \
242	_sys_result; \
243	})
244
245	#define internal_syscall7(name, err, arg1, arg2, arg3, arg4, arg5, arg6, arg7)\
246	({ \
247	long _sys_result; \
248	\
249	{ \
250	register long __v0 asm("$2"); \
251	register long __a0 asm("$4") = (long) arg1; \
252	register long __a1 asm("$5") = (long) arg2; \
253	register long __a2 asm("$6") = (long) arg3; \
254	register long __a3 asm("$7") = (long) arg4; \
255	__asm__ volatile ( \
256	".set\tnoreorder\n\t" \
257	"lw\t$2, %6\n\t" \
258	"lw\t$8, %7\n\t" \
259	"lw\t$9, %8\n\t" \
260	"subu\t$29, 32\n\t" \
261	"sw\t$2, 16($29)\n\t" \
262	"sw\t$8, 20($29)\n\t" \
263	"sw\t$9, 24($29)\n\t" \
264	"li\t$2, %5\t\t\t# " #name "\n\t" \
265	"syscall\n\t" \
266	"addiu\t$29, 32\n\t" \
267	".set\treorder" \
268	: "=r" (__v0), "+r" (__a3) \
269	: "r" (__a0), "r" (__a1), "r" (__a2), "i" (SYS_ify(name)), \
270	"m" ((long)arg5), "m" ((long)arg6), "m" ((long)arg7) \
271	: __SYSCALL_CLOBBERS); \
272	err = __a3; \
273	_sys_result = __v0; \
274	} \
275	_sys_result; \
276	})
277
278	#define __SYSCALL_CLOBBERS "$1", "$3", "$8", "$9", "$10", "$11", "$12", "$13", "$14", "$15", "$24", "$25"
279
280	#endif /* __ASSEMBLER__ */
281
ef055a74	282	#endif /* linux/mips/mips32/sysdep.h */