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C/C++ Source or Header  |  1999-09-17  |  7KB  |  220 lines
  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. #endif
  20.  
  21. /* Fixup call xx */
  22.  
  23. #define BTFIXUPDEF_CALL(__type, __name, __args...)                     \
  24.     extern __type ___f_##__name(__args);                        \
  25.     extern unsigned ___fs_##__name[3];
  26. #define BTFIXUPDEF_CALL_CONST(__type, __name, __args...)                 \
  27.     extern __type ___f_##__name(__args) __attribute__((const));            \
  28.     extern unsigned ___fs_##__name[3];
  29. #define BTFIXUP_CALL(__name) ___f_##__name
  30.  
  31. #define BTFIXUPDEF_BLACKBOX(__name)                            \
  32.     extern unsigned ___bs_##__name[2];
  33. #ifdef MODULE
  34. #define BTFIXUP_BLACKBOX(__name) ___illegal_use_of_BTFIXUP_BLACKBOX_in_module
  35. #else
  36. /* This must be written in assembly and present in a sethi */
  37. #define BTFIXUP_BLACKBOX(__name) ___b_##__name
  38. #endif
  39.  
  40. /* Put bottom 13bits into some register variable */
  41.  
  42. #define BTFIXUPDEF_SIMM13(__name)                            \
  43.     extern unsigned int ___sf_##__name(void) __attribute__((const));        \
  44.     extern unsigned ___ss_##__name[2];                        \
  45.     extern __inline__ unsigned int ___sf_##__name(void) {                \
  46.         unsigned int ret;                            \
  47.         __asm__ ("or %%g0, ___s_" #__name ", %0" : "=r"(ret));            \
  48.         return ret;                                \
  49.     }
  50. #define BTFIXUPDEF_SIMM13_INIT(__name,__val)                        \
  51.     extern unsigned int ___sf_##__name(void) __attribute__((const));        \
  52.     extern unsigned ___ss_##__name[2];                        \
  53.     extern __inline__ unsigned int ___sf_##__name(void) {                \
  54.         unsigned int ret;                            \
  55.         __asm__ ("or %%g0, ___s_" #__name "__btset_" #__val ", %0" : "=r"(ret));\
  56.         return ret;                                \
  57.     }
  58. #ifdef MODULE
  59. #define BTFIXUP_SIMM13(__name) ___illegal_use_of_BTFIXUP_SIMM13_in_module()
  60. #else
  61. #define BTFIXUP_SIMM13(__name) ___sf_##__name()
  62. #endif
  63.  
  64. /* Put either bottom 13 bits, or upper 22 bits into some register variable
  65.  * (depending on the value, this will lead into sethi FIX, reg; or
  66.  * mov FIX, reg; )
  67.  */
  68.  
  69. #define BTFIXUPDEF_HALF(__name)                                \
  70.     extern unsigned int ___af_##__name(void) __attribute__((const));        \
  71.     extern unsigned ___as_##__name[2];                        \
  72.     extern __inline__ unsigned int ___af_##__name(void) {                \
  73.         unsigned int ret;                            \
  74.         __asm__ ("or %%g0, ___a_" #__name ", %0" : "=r"(ret));            \
  75.         return ret;                                \
  76.     }
  77. #define BTFIXUPDEF_HALF_INIT(__name,__val)                        \
  78.     extern unsigned int ___af_##__name(void) __attribute__((const));        \
  79.     extern unsigned ___as_##__name[2];                        \
  80.     extern __inline__ unsigned int ___af_##__name(void) {                \
  81.         unsigned int ret;                            \
  82.         __asm__ ("or %%g0, ___a_" #__name "__btset_" #__val ", %0" : "=r"(ret));\
  83.         return ret;                                \
  84.     }
  85. #ifdef MODULE
  86. #define BTFIXUP_HALF(__name) ___illegal_use_of_BTFIXUP_HALF_in_module()
  87. #else
  88. #define BTFIXUP_HALF(__name) ___af_##__name()
  89. #endif
  90.  
  91. /* Put upper 22 bits into some register variable */
  92.  
  93. #define BTFIXUPDEF_SETHI(__name)                            \
  94.     extern unsigned int ___hf_##__name(void) __attribute__((const));        \
  95.     extern unsigned ___hs_##__name[2];                        \
  96.     extern __inline__ unsigned int ___hf_##__name(void) {                \
  97.         unsigned int ret;                            \
  98.         __asm__ ("sethi %%hi(___h_" #__name "), %0" : "=r"(ret));        \
  99.         return ret;                                \
  100.     }
  101. #define BTFIXUPDEF_SETHI_INIT(__name,__val)                        \
  102.     extern unsigned int ___hf_##__name(void) __attribute__((const));        \
  103.     extern unsigned ___hs_##__name[2];                        \
  104.     extern __inline__ unsigned int ___hf_##__name(void) {                \
  105.         unsigned int ret;                            \
  106.         __asm__ ("sethi %%hi(___h_" #__name "__btset_" #__val "), %0" :     \
  107.              "=r"(ret));                            \
  108.         return ret;                                \
  109.     }
  110. #ifdef MODULE
  111. #define BTFIXUP_SETHI(__name) ___illegal_use_of_BTFIXUP_SETHI_in_module()
  112. #else
  113. #define BTFIXUP_SETHI(__name) ___hf_##__name()
  114. #endif
  115.  
  116. /* Put a full 32bit integer into some register variable */
  117.  
  118. #define BTFIXUPDEF_INT(__name)                                \
  119.     extern unsigned char ___i_##__name;                        \
  120.     extern unsigned ___is_##__name[2];
  121. #ifdef MODULE
  122. #define BTFIXUP_INT(__name) ___illegal_use_of_BTFIXUP_INT_in_module()
  123. #else
  124. #define BTFIXUP_INT(__name) ((unsigned int)&___i_##__name)
  125. #endif
  126.  
  127. #define BTFIXUPCALL_NORM    0x00000000            /* Always call */
  128. #define BTFIXUPCALL_NOP        0x01000000            /* Possibly optimize to nop */
  129. #define BTFIXUPCALL_RETINT(i)    (0x90102000|((i) & 0x1fff))    /* Possibly optimize to mov i, %o0 */
  130. #define BTFIXUPCALL_ORINT(i)    (0x90122000|((i) & 0x1fff))    /* Possibly optimize to or %o0, i, %o0 */
  131. #define BTFIXUPCALL_RETO0    0x01000000            /* Return first parameter, actually a nop */
  132. #define BTFIXUPCALL_ANDNINT(i)    (0x902a2000|((i) & 0x1fff))    /* Possibly optimize to andn %o0, i, %o0 */
  133. #define BTFIXUPCALL_SWAPO0O1    0xd27a0000            /* Possibly optimize to swap [%o0],%o1 */
  134. #define BTFIXUPCALL_SWAPO0G0    0xc07a0000            /* Possibly optimize to swap [%o0],%g0 */
  135. #define BTFIXUPCALL_SWAPG1G2    0xc4784000            /* Possibly optimize to swap [%g1],%g2 */
  136. #define BTFIXUPCALL_STG0O0    0xc0220000            /* Possibly optimize to st %g0,[%o0] */
  137. #define BTFIXUPCALL_STO1O0    0xd2220000            /* Possibly optimize to st %o1,[%o0] */
  138.  
  139. #define BTFIXUPSET_CALL(__name, __addr, __insn)                        \
  140.     do {                                        \
  141.         ___fs_##__name[0] |= 1;                            \
  142.         ___fs_##__name[1] = (unsigned long)__addr;                \
  143.         ___fs_##__name[2] = __insn;                        \
  144.     } while (0)
  145.     
  146. #define BTFIXUPSET_BLACKBOX(__name, __func)                        \
  147.     do {                                        \
  148.         ___bs_##__name[0] |= 1;                            \
  149.         ___bs_##__name[1] = (unsigned long)__func;                \
  150.     } while (0)
  151.     
  152. #define BTFIXUPCOPY_CALL(__name, __from)                        \
  153.     do {                                        \
  154.         ___fs_##__name[0] |= 1;                            \
  155.         ___fs_##__name[1] = ___fs_##__from[1];                    \
  156.         ___fs_##__name[2] = ___fs_##__from[2];                    \
  157.     } while (0)
  158.         
  159. #define BTFIXUPSET_SIMM13(__name, __val)                        \
  160.     do {                                        \
  161.         ___ss_##__name[0] |= 1;                            \
  162.         ___ss_##__name[1] = (unsigned)__val;                    \
  163.     } while (0)
  164.     
  165. #define BTFIXUPCOPY_SIMM13(__name, __from)                        \
  166.     do {                                        \
  167.         ___ss_##__name[0] |= 1;                            \
  168.         ___ss_##__name[1] = ___ss_##__from[1];                    \
  169.     } while (0)
  170.         
  171. #define BTFIXUPSET_HALF(__name, __val)                            \
  172.     do {                                        \
  173.         ___as_##__name[0] |= 1;                            \
  174.         ___as_##__name[1] = (unsigned)__val;                    \
  175.     } while (0)
  176.     
  177. #define BTFIXUPCOPY_HALF(__name, __from)                        \
  178.     do {                                        \
  179.         ___as_##__name[0] |= 1;                            \
  180.         ___as_##__name[1] = ___as_##__from[1];                    \
  181.     } while (0)
  182.         
  183. #define BTFIXUPSET_SETHI(__name, __val)                            \
  184.     do {                                        \
  185.         ___hs_##__name[0] |= 1;                            \
  186.         ___hs_##__name[1] = (unsigned)__val;                    \
  187.     } while (0)
  188.     
  189. #define BTFIXUPCOPY_SETHI(__name, __from)                        \
  190.     do {                                        \
  191.         ___hs_##__name[0] |= 1;                            \
  192.         ___hs_##__name[1] = ___hs_##__from[1];                    \
  193.     } while (0)
  194.         
  195. #define BTFIXUPSET_INT(__name, __val)                            \
  196.     do {                                        \
  197.         ___is_##__name[0] |= 1;                            \
  198.         ___is_##__name[1] = (unsigned)__val;                    \
  199.     } while (0)
  200.     
  201. #define BTFIXUPCOPY_INT(__name, __from)                            \
  202.     do {                                        \
  203.         ___is_##__name[0] |= 1;                            \
  204.         ___is_##__name[1] = ___is_##__from[1];                    \
  205.     } while (0)
  206.     
  207. #define BTFIXUPVAL_CALL(__name)                                \
  208.     ((unsigned long)___fs_##__name[1])
  209.     
  210. extern void btfixup(void);
  211.  
  212. #else /* __ASSEMBLY__ */
  213.  
  214. #define BTFIXUP_SETHI(__name)            %hi(___h_ ## __name)
  215. #define BTFIXUP_SETHI_INIT(__name,__val)    %hi(___h_ ## __name ## __btset_ ## __val)
  216.  
  217. #endif /* __ASSEMBLY__ */
  218.     
  219. #endif /* !(_SPARC_BTFIXUP_H) */
  220.