1 /* $Id: btfixup.h,v 1.4 1998/03/09 14:04:43 jj Exp $ 2 * asm-sparc/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 15 extern unsigned int ___illegal_use_of_BTFIXUP_SIMM13_in_module(void); 16 extern unsigned int ___illegal_use_of_BTFIXUP_SETHI_in_module(void); 17 extern unsigned int ___illegal_use_of_BTFIXUP_HALF_in_module(void); 18 extern 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 extern unsigned int ___sf_##__name(void) __attribute__((const)); \ 53 extern unsigned ___ss_##__name[2]; \ 54 extern __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 extern unsigned int ___sf_##__name(void) __attribute__((const)); \ 61 extern unsigned ___ss_##__name[2]; \ 62 extern __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 extern unsigned int ___af_##__name(void) __attribute__((const)); \ 75 extern unsigned ___as_##__name[2]; \ 76 extern __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 extern unsigned int ___af_##__name(void) __attribute__((const)); \ 83 extern unsigned ___as_##__name[2]; \ 84 extern __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 extern unsigned int ___hf_##__name(void) __attribute__((const)); \ 94 extern unsigned ___hs_##__name[2]; \ 95 extern __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 extern unsigned int ___hf_##__name(void) __attribute__((const)); \ 102 extern unsigned ___hs_##__name[2]; \ 103 extern __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]) 198 199 extern 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) */ 209