68 lines
2.6 KiB
C
68 lines
2.6 KiB
C
/***********************************************************************/
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/* */
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/* Objective Caml */
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/* */
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/* Xavier Leroy, projet Cristal, INRIA Rocquencourt */
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/* */
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/* Copyright 1996 Institut National de Recherche en Informatique et */
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/* Automatique. Distributed only by permission. */
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/* */
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/***********************************************************************/
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/* $Id$ */
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/* Machine-dependent macros to access the stack frames. */
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#ifndef _stack_
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#define _stack_
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#ifdef TARGET_alpha
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#define Saved_return_address(sp) *((long *)(sp - 8))
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#define Already_scanned(sp, retaddr) (retaddr & 1)
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#define Mark_scanned(sp, retaddr) (*((long *)(sp - 8)) = retaddr | 1)
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#define Mask_already_scanned(retaddr) (retaddr & ~1)
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#define Callback_link(sp) ((struct callback_link *)(sp + 16))
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#endif
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#ifdef TARGET_sparc
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#define Saved_return_address(sp) *((long *)(sp + 92))
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#define Already_scanned(sp, retaddr) (retaddr & 1)
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#define Mark_scanned(sp, retaddr) (*((long *)(sp + 92)) = retaddr | 1)
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#define Mask_already_scanned(retaddr) (retaddr & ~1)
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#define Callback_link(sp) ((struct callback_link *)(sp + 104))
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#endif
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#ifdef TARGET_i386
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#define Saved_return_address(sp) *((long *)(sp - 4))
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#define Callback_link(sp) ((struct callback_link *)(sp + 8))
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#endif
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#ifdef TARGET_mips
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#define Saved_return_address(sp) *((long *)(sp - 4))
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#define Already_scanned(sp, retaddr) (retaddr & 1)
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#define Mark_scanned(sp, retaddr) (*((long *)(sp - 4)) = retaddr | 1)
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#define Mask_already_scanned(retaddr) (retaddr & ~1)
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#define Callback_link(sp) ((struct callback_link *)(sp + 8))
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#endif
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#ifdef TARGET_hppa
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#define Stack_grows_upwards
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#define Saved_return_address(sp) *((long *)sp)
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#define Already_scanned(sp, retaddr) (retaddr & 0x80000000)
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#define Mark_scanned(sp, retaddr) (*((long *)sp) = retaddr | 0x80000000)
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#define Mask_already_scanned(retaddr) (retaddr & ~0x80000000)
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#define Callback_link(sp) ((struct callback_link *)(sp - 16))
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#endif
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#ifdef TARGET_power
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#define Saved_return_address(sp) *((long *)(sp - 4))
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#define Already_scanned(sp, retaddr) (retaddr & 1)
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#define Mark_scanned(sp, retaddr) (*((long *)(sp - 4)) = retaddr | 1)
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#define Mask_already_scanned(retaddr) (retaddr & ~1)
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#define Callback_link(sp) ((struct callback_link *)(sp + 24))
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#endif
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#endif /* _stack_ */
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