From 98014aa54361143450d0d9869369b6e3cb715f28 Mon Sep 17 00:00:00 2001
From: rsc <devnull@localhost>
Date: Fri, 3 Oct 2003 15:33:45 +0000
Subject: Macintosh.

---
 package                               | 14 ++----------
 src/Makefile                          |  4 ++--
 src/Makeone                           |  1 +
 src/lib9/getcallerpc-PowerMacintosh.s |  5 +++++
 src/lib9/tas-PowerMacintosh.c         | 42 +++++++++++++++++++++++++++++++++++
 src/libdraw/x11-draw.c                | 13 ++++++-----
 src/libdraw/x11-get.c                 |  3 +++
 7 files changed, 62 insertions(+), 20 deletions(-)
 create mode 100644 src/lib9/getcallerpc-PowerMacintosh.s
 create mode 100644 src/lib9/tas-PowerMacintosh.c

diff --git a/package b/package
index 5b1a8a4e..ba135073 100755
--- a/package
+++ b/package
@@ -2,18 +2,8 @@
 
 rm -rf ../9tmp
 mkdir ../9tmp
-mkdir ../9pkg
 cp -R * ../9tmp
 cd ../9tmp
 rm -rf `find . -name CVS`
-rm lib/*
-rm */*.o
-rm */*.a
-rm mk/mk
-rm sam/sam
-rm man/*/*
-for i in libfmt libbio lib9 libthread libutf libregexp sam mk 
-do
-	tar cf - $i |gzip >../9pkg/$i.tar.gz
-done
-tar cf - . | gzip > ../9pkg/all.tar.gz
+make nuke
+tar cf - . | gzip >~/public_html/9src.tar.gz
diff --git a/src/Makefile b/src/Makefile
index 30ff19e1..19326a0d 100644
--- a/src/Makefile
+++ b/src/Makefile
@@ -13,8 +13,8 @@ CMDS=\
 	sam\
 	samterm\
 
-clean all install nuke:
-	for i in $(LIBS) $(DIRS); \
+all clean install nuke:
+	for i in $(LIBS) $(CMDS); \
 	do \
 		(echo $$i; cd $$i; $(MAKE) $@); \
 	done
diff --git a/src/Makeone b/src/Makeone
index 62292855..4f8e9488 100644
--- a/src/Makeone
+++ b/src/Makeone
@@ -4,6 +4,7 @@ $(TARG): $(OFILES)
 	$(CC) -o $(TARG) $(OFILES) $(LDFLAGS)
 
 CLEANFILES+=$(TARG)
+NUKEFILES+=$(9SRC)/bin/$(TARG)
 
 include $(9SRC)/Makecommon
 
diff --git a/src/lib9/getcallerpc-PowerMacintosh.s b/src/lib9/getcallerpc-PowerMacintosh.s
new file mode 100644
index 00000000..3571b744
--- /dev/null
+++ b/src/lib9/getcallerpc-PowerMacintosh.s
@@ -0,0 +1,5 @@
+.text
+.globl _getcallerpc
+_getcallerpc:
+	mflr	r3
+	blr
diff --git a/src/lib9/tas-PowerMacintosh.c b/src/lib9/tas-PowerMacintosh.c
new file mode 100644
index 00000000..29928ce0
--- /dev/null
+++ b/src/lib9/tas-PowerMacintosh.c
@@ -0,0 +1,42 @@
+#include "u.h"
+#include "libc.h"
+
+/*
+ * first argument (l) is in r3 at entry.
+ * r3 contains return value upon return.
+ */
+int
+_tas(void *x)
+{
+	int     v;
+	/*
+	 * this __asm__ works with gcc 2.95.2 (mac os x 10.1).
+	 * this assembly language destroys r0 (0), some other register (v),
+	 * r4 (x) and r5 (temp).
+	 */
+	__asm__("\n	sync\n"
+	"	li	r0,0\n"
+	"	mr	r4,%1		/* &l->val */\n"
+	"	lis	r5,0xdead	/* assemble constant 0xdeaddead */\n"
+	"	ori	r5,r5,0xdead	/* \" */\n"
+	"tas1:\n"
+	"	dcbf	r4,r0	/* cache flush; \"fix for 603x bug\" */\n"
+	"	lwarx	%0,r4,r0	/* v = l->val with reservation */\n"
+	"	cmp	cr0,0,%0,r0	/* v == 0 */\n"
+	"	bne	tas0\n"
+	"	stwcx.	r5,r4,r0   /* if (l->val same) l->val = 0xdeaddead */\n"
+	"	bne	tas1\n"
+	"tas0:\n"
+	"	sync\n"
+	"	isync\n"
+	: "=r" (v)
+	: "r"  (x)
+	: "cc", "memory", "r0", "r4", "r5"
+	);
+	switch(v) {
+	case 0:		return 0;
+	case 0xdeaddead: return 1;
+	default:	print("tas: corrupted 0x%lux\n", v);
+	}
+	return 0;
+}
diff --git a/src/libdraw/x11-draw.c b/src/libdraw/x11-draw.c
index 33b92c87..ee91791d 100644
--- a/src/libdraw/x11-draw.c
+++ b/src/libdraw/x11-draw.c
@@ -17,14 +17,12 @@ void
 memimagedraw(Memimage *dst, Rectangle r, Memimage *src, Point sp,
 	Memimage *mask, Point mp, int op)
 {
+	int drew;
 	Memdrawparam *par;
 
 	if((par = _memimagedrawsetup(dst, r, src, sp, mask, mp, op)) == nil)
 		return;
 
-	if(xdraw(par))
-		return;
-
 	/* only fetch dst data if we need it */
 	if((par->state&(Simplemask|Fullmask)) != (Simplemask|Fullmask))
 		xgetxdata(dst, par->r);
@@ -36,6 +34,9 @@ memimagedraw(Memimage *dst, Rectangle r, Memimage *src, Point sp,
 	/* now can run memimagedraw on the in-memory bits */
 	_memimagedraw(par);
 
+	if(xdraw(par))
+		return;
+
 	/* put bits back on x server */
 	xputxdata(dst, par->r);
 }
@@ -67,7 +68,7 @@ xdraw(Memdrawparam *par)
 	m = Simplesrc|Simplemask|Fullmask;
 	if((state&m) == m){
 		xfillcolor(dst, r, par->sdval);
-		xdirtyxdata(dst, r);
+	//	xdirtyxdata(dst, r);
 		return 1;
 	}
 
@@ -86,7 +87,7 @@ xdraw(Memdrawparam *par)
 
 		XCopyArea(_x.display, xsrc->pixmap, xdst->pixmap, gc,
 			sp.x, sp.y, Dx(r), Dy(r), dp.x, dp.y);
-		xdirtyxdata(dst, r);
+	//	xdirtyxdata(dst, r);
 		return 1;
 	}
 
@@ -131,7 +132,7 @@ xdraw(Memdrawparam *par)
 		XSetTSOrigin(_x.display, gc, mp.x, mp.y);
 		XFillRectangle(_x.display, xdst->pixmap, gc, dp.x, dp.y,
 			Dx(r), Dy(r));
-		xdirtyxdata(dst, r);
+	//	xdirtyxdata(dst, r);
 		return 1;
 	}
 
diff --git a/src/libdraw/x11-get.c b/src/libdraw/x11-get.c
index feed46c6..a6d4b12e 100644
--- a/src/libdraw/x11-get.c
+++ b/src/libdraw/x11-get.c
@@ -30,6 +30,8 @@ xgetxdata(Memimage *m, Rectangle r)
 	if(xm->dirty == 0)
 		return xm->xi;
 
+	abort();	/* should never call this now */
+
 	r = xm->dirtyr;
 	if(Dx(r)==0 || Dy(r)==0)
 		return xm->xi;
@@ -102,6 +104,7 @@ xdirtyxdata(Memimage *m, Rectangle r)
 	xm = m->X;
 	if(xm == nil)
 		return;
+
 	xm->dirty = 1;
 	addrect(&xm->dirtyr, r);
 }
-- 
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