include/sys/jmp_buf.h

   1 /* This file is intended for use by program code (possibly written in
   2  * assembly) that needs to manipulate a jmp_buf or sigjmp_buf. The JB_*
   3  * values are byte offsets into the jmp_buf and sigjmp_buf structures.
   4  */
   5
   6 #ifndef _JMP_BUF_H
   7 #define _JMP_BUF_H
   8
   9 #include <minix/config.h>
  10
  11 #if defined(__ACK__)
  12 /* as per lib/ack/rts/setjmp.e */
  13
  14 /* note the lack of parentheses, which would confuse 'as' */
  15 #define JB_PC           0
  16 #define JB_SP           JB_PC + _EM_PSIZE
  17 #define JB_LB           JB_SP + _EM_PSIZE
  18 #define JB_MASK         JB_LB + _EM_PSIZE
  19 #define JB_FLAGS        JB_MASK + _EM_LSIZE
  20
  21 #if (CHIP == INTEL)
  22 #define JB_BP           JB_LB
  23 #endif
  24
  25 #elif defined(__GNUC__)
  26
  27 #if (CHIP == INTEL) && (_WORD_SIZE == 4)
  28 /* as per lib/gnu/rts/__setjmp.gs */
  29
  30 #define JB_FLAGS        0
  31 #define JB_MASK         4
  32 #define JB_PC           8
  33 #define JB_SP           12
  34 #define JB_BP           16
  35 #define JB_BX           20
  36 #define JB_CX           24
  37 #define JB_DX           28
  38 #define JB_SI           32
  39 #define JB_DI           36
  40
  41 #endif /* (CHIP == INTEL) && (_WORD_SIZE == 4) */
  42
  43 #endif /* __GNU__ */
  44
  45 #endif /* _JMP_BUF_H */