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Diffstat (limited to 'qt/md/sparc.h')
-rw-r--r-- | qt/md/sparc.h | 140 |
1 files changed, 0 insertions, 140 deletions
diff --git a/qt/md/sparc.h b/qt/md/sparc.h deleted file mode 100644 index e2ab281b4..000000000 --- a/qt/md/sparc.h +++ /dev/null @@ -1,140 +0,0 @@ -/* - * QuickThreads -- Threads-building toolkit. - * Copyright (c) 1993 by David Keppel - * - * Permission to use, copy, modify and distribute this software and - * its documentation for any purpose and without fee is hereby - * granted, provided that the above copyright notice and this notice - * appear in all copies. This software is provided as a - * proof-of-concept and for demonstration purposes; there is no - * representation about the suitability of this software for any - * purpose. - */ - -#ifndef QT_SPARC_H -#define QT_SPARC_H - -typedef unsigned long qt_word_t; - -/* Stack layout on the sparc: - - non-varargs: - - +--- - | <blank space for alignment> - | %o7 == return address -> qt_start - | %i7 - | %i6 == frame pointer -> 0 (NULL-terminated stack frame chain) - | %i5 -> only - | %i4 -> userf - | %i3 - | %i2 -> pt - | %i1 -> pu - | %i0 - | %l7 - | %l6 - | %l5 - | %l4 - | %l3 - | %l2 - | %l1 - | %l0 <--- qt_t.sp - +--- - - varargs: - - | : - | : - | argument list - | one-word aggregate return pointer - +--- - | <blank space for alignment> - | %o7 == return address -> qt_vstart - | %i7 - | %i6 == frame pointer -> 0 (NULL-terminated stack frame chain) - | %i5 -> startup - | %i4 -> userf - | %i3 -> cleanup - | %i2 -> pt - | %i1 - | %i0 - | %l7 - | %l6 - | %l5 - | %l4 - | %l3 - | %l2 - | %l1 - | %l0 <--- qt_t.sp - +--- - - */ - - -/* What to do to start a thread running. */ -extern void qt_start (void); -extern void qt_vstart (void); - - -/* Hold 17 saved registers + 1 word for alignment. */ -#define QT_STKBASE (18 * 4) -#define QT_VSTKBASE QT_STKBASE - - -/* Stack must be doubleword aligned. */ -#define QT_STKALIGN (8) /* Doubleword aligned. */ - -#define QT_ONLY_INDEX (QT_I5) -#define QT_USER_INDEX (QT_I4) -#define QT_ARGT_INDEX (QT_I2) -#define QT_ARGU_INDEX (QT_I1) - -#define QT_VSTARTUP_INDEX (QT_I5) -#define QT_VUSERF_INDEX (QT_I4) -#define QT_VCLEANUP_INDEX (QT_I3) -#define QT_VARGT_INDEX (QT_I2) - -#define QT_O7 (16) -#define QT_I6 (14) -#define QT_I5 (13) -#define QT_I4 (12) -#define QT_I3 (11) -#define QT_I2 (10) -#define QT_I1 ( 9) - - -/* The thread will ``return'' to the `qt_start' routine to get things - going. The normal return sequence takes us to QT_O7+8, so we - pre-subtract 8. The frame pointer chain is 0-terminated to prevent - the trap handler from chasing off in to random memory when flushing - stack windows. */ - -#define QT_ARGS_MD(top) \ - (QT_SPUT ((top), QT_O7, ((void *)(((int)qt_start)-8))), \ - QT_SPUT ((top), QT_I6, 0)) - - -/* The varargs startup routine always reads 6 words of arguments - (6 argument registers) from the stack, offset by one word to - allow for an aggregate return area pointer. If the varargs - routine actually pushed fewer words than that, qt_vstart could read - off the top of the stack. To prevent errors, we always allocate 8 - words. The space is often just wasted. */ - -#define QT_VARGS_MD0(sp, vabytes) \ - ((qt_t *)(((char *)(sp)) - 8*4 - QT_STKROUNDUP(vabytes))) - -#define QT_VARGS_MD1(sp) \ - (QT_SPUT (sp, QT_O7, ((void *)(((int)qt_vstart)-8)))) - -/* The SPARC has wierdo calling conventions which stores a hidden - parameter for returning aggregate values, so the rest of the - parameters are shoved up the stack by one place. */ -#define QT_VARGS_ADJUST(sp) (((char *)sp)+4) - -#define QT_VARGS_DEFAULT - - -#define QT_GROW_DOWN - -#endif /* ndef QT_SPARC_H */ |