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  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.     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.     
  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.