46 lines
989 B
C
46 lines
989 B
C
/* This file is intended for use by program code (possibly written in
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* assembly) that needs to manipulate a jmp_buf or sigjmp_buf. The JB_*
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* values are byte offsets into the jmp_buf and sigjmp_buf structures.
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*/
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#ifndef _JMP_BUF_H
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#define _JMP_BUF_H
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#include <minix/config.h>
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#if defined(__ACK__)
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/* as per lib/ack/rts/setjmp.e */
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/* note the lack of parentheses, which would confuse 'as' */
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#define JB_PC 0
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#define JB_SP JB_PC + _EM_PSIZE
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#define JB_LB JB_SP + _EM_PSIZE
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#define JB_MASK JB_LB + _EM_PSIZE
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#define JB_FLAGS JB_MASK + _EM_LSIZE
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#if (CHIP == INTEL)
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#define JB_BP JB_LB
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#endif
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#elif defined(__GNUC__)
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#if (CHIP == INTEL) && (_WORD_SIZE == 4)
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/* as per lib/gnu/rts/__setjmp.gs */
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#define JB_FLAGS 0
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#define JB_MASK 4
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#define JB_PC 8
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#define JB_SP 12
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#define JB_BP 16
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#define JB_BX 20
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#define JB_CX 24
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#define JB_DX 28
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#define JB_SI 32
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#define JB_DI 36
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#endif /* (CHIP == INTEL) && (_WORD_SIZE == 4) */
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#endif /* __GNU__ */
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#endif /* _JMP_BUF_H */
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