From ea0e38f6bc1e458b34b11b40c1092036db34f548 Mon Sep 17 00:00:00 2001
From: Richard Henderson <rth@twiddle.net>
Date: Wed, 27 Apr 2011 09:43:00 -0700
Subject: Re-org for Clipper system.

---
 pal.h | 134 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 134 insertions(+)
 create mode 100644 pal.h

(limited to 'pal.h')

diff --git a/pal.h b/pal.h
new file mode 100644
index 0000000..a2ee6cf
--- /dev/null
+++ b/pal.h
@@ -0,0 +1,134 @@
+#ifndef PAL_H
+#define PAL_H 1
+
+/* General Purpose Registers.  */
+#define	v0	$0
+#define t0	$1
+#define t1	$2
+#define t2	$3
+#define t3	$4
+#define t4	$5
+#define t5	$6
+#define a0	$16
+#define a1	$17
+#define a2	$18
+#define a3	$19
+#define a4	$20
+#define a5	$21
+#define t8	$22
+#define t9	$23
+#define t10	$24
+
+/* PALcode Shadow Registers.  These registers are swapped out when
+   QEMU is in PALmode.  Unlike real hardware, there is no enable bit.
+   However, also unlike real hardware, the originals can be accessed
+   via MTPR/MFPR.  */
+#define p0	$8
+#define p1	$9
+#define p2	$10
+#define p3	$11
+#define p4	$12
+#define p5	$13
+#define p6	$14		// Used to save exc_addr for machine check
+#define p7	$25
+
+/* QEMU Processor Registers.  */
+#define	qemu_ps		0
+#define qemu_fen	1
+#define qemu_pcc_ofs	2
+#define qemu_trap_arg0	3
+#define qemu_trap_arg1	4
+#define qemu_trap_arg2	5
+#define qemu_exc_addr	6
+#define qemu_palbr	7
+#define qemu_ptbr	8
+#define qemu_vptptr	9
+#define qemu_unique	10
+#define qemu_sysval	11
+#define qemu_usp	12
+
+#define qemu_shadow0	32
+#define qemu_shadow1	33
+#define qemu_shadow2	34
+#define qemu_shadow3	35
+#define qemu_shadow4	36
+#define qemu_shadow5	37
+#define qemu_shadow6	38
+#define qemu_shadow7	39
+
+/* PALcode Processor Register Private Storage.  */
+#define pt0		40
+#define pt1		41
+#define pt2		42
+#define pt3		43
+#define pt4		44
+#define pt5		45
+#define pt6		46
+#define pt7		47
+#define pt8		48
+#define pt9		49
+#define pt10		50
+#define pt11		51
+#define pt12		52
+#define pt13		53
+#define pt14		54
+#define pt15		55
+#define pt16		56
+#define pt17		57
+#define pt18		58
+#define pt19		59
+#define pt20		60
+#define pt21		61
+#define pt22		62
+#define pt23		63
+
+/* QEMU function calls, via mtpr.  */
+#define qemu_tbia	255
+#define qemu_tbis	254
+#define qemu_wait	253
+#define qemu_halt	252
+
+/* PALcode uses of the private storage slots.  */
+#define ptEntUna	pt0
+#define ptEntIF		pt1
+#define ptEntSys	pt2
+#define ptEntInt	pt3
+#define ptEntArith	pt4
+#define ptEntMM		pt5
+#define ptMces		pt6
+#define ptKsp		pt7
+#define ptKgp		pt8
+#define ptPcbb		pt9
+#define ptPgp		pt10
+#define ptMisc		pt11
+#define ptMchk0		pt12
+#define ptMchk1		pt13
+#define ptMchk2		pt14
+#define ptMchk3		pt15
+#define ptMchk4		pt16
+#define ptMchk5		pt17
+#define ptSys0		pt18
+#define ptSys1		pt19
+
+/*
+ * Shortcuts for various PALmode instructions.
+ */
+#define mtpr	hw_mtpr
+#define mfpr	hw_mfpr
+#define stq_p	hw_stq/p
+#define stl_p	hw_stl/p
+#define ldl_p	hw_ldl/p
+#define ldq_p	hw_ldq/p
+
+/* QEMU recognizes the EV4/EV5 HW_REI instruction as a special case of
+   the EV6 HW_RET instruction.  This pulls the destination address from
+   the EXC_ADDR processor register.  */
+#define hw_rei	hw_ret ($31)
+
+
+.macro	ENDFN	function
+	.type	\function, @function
+	.size	\function, . - \function
+.endm
+
+#endif /* PAL_H */
-- 
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