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/arch/sparc/include/asm/btfixup.h

https://bitbucket.org/ndreys/linux-sunxi
C++ Header | 208 lines | 158 code | 36 blank | 14 comment | 11 complexity | a3bfbdf5fcef4bf5887fc378f3edf7e7 MD5 | raw file
Possible License(s): GPL-2.0, LGPL-2.0, AGPL-1.0
  1/*
  2 *  asm/btfixup.h:    Macros for boot time linking.
  3 *
  4 *  Copyright (C) 1998 Jakub Jelinek (jj@sunsite.mff.cuni.cz)
  5 */
  6 
  7#ifndef _SPARC_BTFIXUP_H
  8#define _SPARC_BTFIXUP_H
  9
 10#include <linux/init.h>
 11
 12#ifndef __ASSEMBLY__
 13
 14#ifdef MODULE
 15extern unsigned int ___illegal_use_of_BTFIXUP_SIMM13_in_module(void);
 16extern unsigned int ___illegal_use_of_BTFIXUP_SETHI_in_module(void);
 17extern unsigned int ___illegal_use_of_BTFIXUP_HALF_in_module(void);
 18extern unsigned int ___illegal_use_of_BTFIXUP_INT_in_module(void);
 19
 20#define BTFIXUP_SIMM13(__name) ___illegal_use_of_BTFIXUP_SIMM13_in_module()
 21#define BTFIXUP_HALF(__name) ___illegal_use_of_BTFIXUP_HALF_in_module()
 22#define BTFIXUP_SETHI(__name) ___illegal_use_of_BTFIXUP_SETHI_in_module()
 23#define BTFIXUP_INT(__name) ___illegal_use_of_BTFIXUP_INT_in_module()
 24#define BTFIXUP_BLACKBOX(__name) ___illegal_use_of_BTFIXUP_BLACKBOX_in_module
 25
 26#else
 27
 28#define BTFIXUP_SIMM13(__name) ___sf_##__name()
 29#define BTFIXUP_HALF(__name) ___af_##__name()
 30#define BTFIXUP_SETHI(__name) ___hf_##__name()
 31#define BTFIXUP_INT(__name) ((unsigned int)&___i_##__name)
 32/* This must be written in assembly and present in a sethi */
 33#define BTFIXUP_BLACKBOX(__name) ___b_##__name
 34#endif /* MODULE */
 35
 36/* Fixup call xx */
 37
 38#define BTFIXUPDEF_CALL(__type, __name, __args...) 					\
 39	extern __type ___f_##__name(__args);						\
 40	extern unsigned ___fs_##__name[3];
 41#define BTFIXUPDEF_CALL_CONST(__type, __name, __args...) 				\
 42	extern __type ___f_##__name(__args) __attribute_const__;			\
 43	extern unsigned ___fs_##__name[3];
 44#define BTFIXUP_CALL(__name) ___f_##__name
 45
 46#define BTFIXUPDEF_BLACKBOX(__name)							\
 47	extern unsigned ___bs_##__name[2];
 48
 49/* Put bottom 13bits into some register variable */
 50
 51#define BTFIXUPDEF_SIMM13(__name)							\
 52	static inline unsigned int ___sf_##__name(void) __attribute_const__;		\
 53	extern unsigned ___ss_##__name[2];						\
 54	static inline unsigned int ___sf_##__name(void) {				\
 55		unsigned int ret;							\
 56		__asm__ ("or %%g0, ___s_" #__name ", %0" : "=r"(ret));			\
 57		return ret;								\
 58	}
 59#define BTFIXUPDEF_SIMM13_INIT(__name,__val)						\
 60	static inline unsigned int ___sf_##__name(void) __attribute_const__;		\
 61	extern unsigned ___ss_##__name[2];						\
 62	static inline unsigned int ___sf_##__name(void) {				\
 63		unsigned int ret;							\
 64		__asm__ ("or %%g0, ___s_" #__name "__btset_" #__val ", %0" : "=r"(ret));\
 65		return ret;								\
 66	}
 67
 68/* Put either bottom 13 bits, or upper 22 bits into some register variable
 69 * (depending on the value, this will lead into sethi FIX, reg; or
 70 * mov FIX, reg; )
 71 */
 72
 73#define BTFIXUPDEF_HALF(__name)								\
 74	static inline unsigned int ___af_##__name(void) __attribute_const__;		\
 75	extern unsigned ___as_##__name[2];						\
 76	static inline unsigned int ___af_##__name(void) {				\
 77		unsigned int ret;							\
 78		__asm__ ("or %%g0, ___a_" #__name ", %0" : "=r"(ret));			\
 79		return ret;								\
 80	}
 81#define BTFIXUPDEF_HALF_INIT(__name,__val)						\
 82	static inline unsigned int ___af_##__name(void) __attribute_const__;		\
 83	extern unsigned ___as_##__name[2];						\
 84	static inline unsigned int ___af_##__name(void) {				\
 85		unsigned int ret;							\
 86		__asm__ ("or %%g0, ___a_" #__name "__btset_" #__val ", %0" : "=r"(ret));\
 87		return ret;								\
 88	}
 89
 90/* Put upper 22 bits into some register variable */
 91
 92#define BTFIXUPDEF_SETHI(__name)							\
 93	static inline unsigned int ___hf_##__name(void) __attribute_const__;		\
 94	extern unsigned ___hs_##__name[2];						\
 95	static inline unsigned int ___hf_##__name(void) {				\
 96		unsigned int ret;							\
 97		__asm__ ("sethi %%hi(___h_" #__name "), %0" : "=r"(ret));		\
 98		return ret;								\
 99	}
100#define BTFIXUPDEF_SETHI_INIT(__name,__val)						\
101	static inline unsigned int ___hf_##__name(void) __attribute_const__;		\
102	extern unsigned ___hs_##__name[2];						\
103	static inline unsigned int ___hf_##__name(void) {				\
104		unsigned int ret;							\
105		__asm__ ("sethi %%hi(___h_" #__name "__btset_" #__val "), %0" : 	\
106			 "=r"(ret));							\
107		return ret;								\
108	}
109
110/* Put a full 32bit integer into some register variable */
111
112#define BTFIXUPDEF_INT(__name)								\
113	extern unsigned char ___i_##__name;						\
114	extern unsigned ___is_##__name[2];
115
116#define BTFIXUPCALL_NORM	0x00000000			/* Always call */
117#define BTFIXUPCALL_NOP		0x01000000			/* Possibly optimize to nop */
118#define BTFIXUPCALL_RETINT(i)	(0x90102000|((i) & 0x1fff))	/* Possibly optimize to mov i, %o0 */
119#define BTFIXUPCALL_ORINT(i)	(0x90122000|((i) & 0x1fff))	/* Possibly optimize to or %o0, i, %o0 */
120#define BTFIXUPCALL_RETO0	0x01000000			/* Return first parameter, actually a nop */
121#define BTFIXUPCALL_ANDNINT(i)	(0x902a2000|((i) & 0x1fff))	/* Possibly optimize to andn %o0, i, %o0 */
122#define BTFIXUPCALL_SWAPO0O1	0xd27a0000			/* Possibly optimize to swap [%o0],%o1 */
123#define BTFIXUPCALL_SWAPO0G0	0xc07a0000			/* Possibly optimize to swap [%o0],%g0 */
124#define BTFIXUPCALL_SWAPG1G2	0xc4784000			/* Possibly optimize to swap [%g1],%g2 */
125#define BTFIXUPCALL_STG0O0	0xc0220000			/* Possibly optimize to st %g0,[%o0] */
126#define BTFIXUPCALL_STO1O0	0xd2220000			/* Possibly optimize to st %o1,[%o0] */
127
128#define BTFIXUPSET_CALL(__name, __addr, __insn)						\
129	do {										\
130		___fs_##__name[0] |= 1;							\
131		___fs_##__name[1] = (unsigned long)__addr;				\
132		___fs_##__name[2] = __insn;						\
133	} while (0)
134	
135#define BTFIXUPSET_BLACKBOX(__name, __func)						\
136	do {										\
137		___bs_##__name[0] |= 1;							\
138		___bs_##__name[1] = (unsigned long)__func;				\
139	} while (0)
140	
141#define BTFIXUPCOPY_CALL(__name, __from)						\
142	do {										\
143		___fs_##__name[0] |= 1;							\
144		___fs_##__name[1] = ___fs_##__from[1];					\
145		___fs_##__name[2] = ___fs_##__from[2];					\
146	} while (0)
147		
148#define BTFIXUPSET_SIMM13(__name, __val)						\
149	do {										\
150		___ss_##__name[0] |= 1;							\
151		___ss_##__name[1] = (unsigned)__val;					\
152	} while (0)
153	
154#define BTFIXUPCOPY_SIMM13(__name, __from)						\
155	do {										\
156		___ss_##__name[0] |= 1;							\
157		___ss_##__name[1] = ___ss_##__from[1];					\
158	} while (0)
159		
160#define BTFIXUPSET_HALF(__name, __val)							\
161	do {										\
162		___as_##__name[0] |= 1;							\
163		___as_##__name[1] = (unsigned)__val;					\
164	} while (0)
165	
166#define BTFIXUPCOPY_HALF(__name, __from)						\
167	do {										\
168		___as_##__name[0] |= 1;							\
169		___as_##__name[1] = ___as_##__from[1];					\
170	} while (0)
171		
172#define BTFIXUPSET_SETHI(__name, __val)							\
173	do {										\
174		___hs_##__name[0] |= 1;							\
175		___hs_##__name[1] = (unsigned)__val;					\
176	} while (0)
177	
178#define BTFIXUPCOPY_SETHI(__name, __from)						\
179	do {										\
180		___hs_##__name[0] |= 1;							\
181		___hs_##__name[1] = ___hs_##__from[1];					\
182	} while (0)
183		
184#define BTFIXUPSET_INT(__name, __val)							\
185	do {										\
186		___is_##__name[0] |= 1;							\
187		___is_##__name[1] = (unsigned)__val;					\
188	} while (0)
189	
190#define BTFIXUPCOPY_INT(__name, __from)							\
191	do {										\
192		___is_##__name[0] |= 1;							\
193		___is_##__name[1] = ___is_##__from[1];					\
194	} while (0)
195	
196#define BTFIXUPVAL_CALL(__name)								\
197	((unsigned long)___fs_##__name[1])
198	
199extern void btfixup(void);
200
201#else /* __ASSEMBLY__ */
202
203#define BTFIXUP_SETHI(__name)			%hi(___h_ ## __name)
204#define BTFIXUP_SETHI_INIT(__name,__val)	%hi(___h_ ## __name ## __btset_ ## __val)
205
206#endif /* __ASSEMBLY__ */
207	
208#endif /* !(_SPARC_BTFIXUP_H) */