3 files changed, 222 insertions, 0 deletions

diff --git a/tools/tools/README b/tools/tools/README
index 9428508bb9096..9498253838ba0 100644
--- a/tools/tools/README
+++ b/tools/tools/README
@@ -19,6 +19,10 @@ diffburst	OBSOLETE: equivalent functionality is available via split -p.
 editing		Editor modes and the like to help editing FreeBSD code.
 epfe 		Extract printing filter examples from printing.sgml.
 find-sb		Scan a disk for possible filesystem superblocks.
+gdb_regofs	A simple tool that prints out a register offset table
+		for mapping gdb(1) register numbers to struct reg and
+		struct fpreg offsets. The tool is useful on selected
+		platforms only.
 hcomp		Compress header files by removing comments and whitespace.
 html-mv         Rename HTML generated filenames to human readable filenames.
 ifinfo		Uses the interface MIB to print out all the information
diff --git a/tools/tools/gdb_regofs/Makefile b/tools/tools/gdb_regofs/Makefile
new file mode 100644
index 0000000000000..28b62a6ec76e0
--- /dev/null
+++ b/tools/tools/gdb_regofs/Makefile
@@ -0,0 +1,5 @@
+# $FreeBSD$
+PROG=gdb_regofs
+SRCS=${MACHINE_ARCH}.c
+NOMAN=yes
+.include <bsd.prog.mk>
diff --git a/tools/tools/gdb_regofs/ia64.c b/tools/tools/gdb_regofs/ia64.c
new file mode 100644
index 0000000000000..59e0055253b60
--- /dev/null
+++ b/tools/tools/gdb_regofs/ia64.c
@@ -0,0 +1,213 @@
+/*
+ * Copyright (c) 2004 Marcel Moolenaar
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include <sys/cdefs.h>
+__FBSDID("$FreeBSD$");
+
+#include <stddef.h>
+#include <machine/reg.h>
+
+#define PRESERVED(x)    offsetof(struct reg, r_preserved)       \
+                        + offsetof(struct _callee_saved, x)
+#define SCRATCH(x)      offsetof(struct reg, r_scratch)         \
+                        + offsetof(struct _caller_saved, x)
+#define SPECIAL(x)      offsetof(struct reg, r_special)         \
+                        + offsetof(struct _special, x)
+
+#define HIGH_FP(x)      offsetof(struct fpreg, fpr_high)        \
+                        + offsetof(struct _high_fp, x)
+#define PRESERVED_FP(x) offsetof(struct fpreg, fpr_preserved)   \
+                        + offsetof(struct _callee_saved_fp, x)
+#define SCRATCH_FP(x)   offsetof(struct fpreg, fpr_scratch)     \
+                        + offsetof(struct _caller_saved_fp, x)
+
+static int regofs[] = {
+        /*
+	 * General registers (0-127)
+	 */
+        -1,             /* gr0 */
+        SPECIAL(gp),
+        SCRATCH(gr2),   SCRATCH(gr3),
+        PRESERVED(gr4), PRESERVED(gr5), PRESERVED(gr6), PRESERVED(gr7),
+        SCRATCH(gr8),   SCRATCH(gr9),   SCRATCH(gr10),  SCRATCH(gr11),
+        SPECIAL(sp),    SPECIAL(tp),
+        SCRATCH(gr14),  SCRATCH(gr15),  SCRATCH(gr16),  SCRATCH(gr17),
+        SCRATCH(gr18),  SCRATCH(gr19),  SCRATCH(gr20),  SCRATCH(gr21),
+        SCRATCH(gr22),  SCRATCH(gr23),  SCRATCH(gr24),  SCRATCH(gr25),
+        SCRATCH(gr26),  SCRATCH(gr27),  SCRATCH(gr28),  SCRATCH(gr29),
+        SCRATCH(gr30),  SCRATCH(gr31),
+        /*
+         * gr32 through gr127 are not directly available as they are
+         * stacked registers.
+         */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr32-gr39 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr40-gr47 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr48-gr55 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr56-gr63 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr64-gr71 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr72-gr79 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr80-gr87 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr88-gr95 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr96-gr103 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr104-gr111 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr112-gr119 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* gr120-gr127 */
+        /*
+         * Floating-point registers (128-255)
+         */
+        -1,             /* fr0: constant 0.0 */
+        -1,             /* fr1: constant 1.0 */
+        PRESERVED_FP(fr2),      PRESERVED_FP(fr3),
+        PRESERVED_FP(fr4),      PRESERVED_FP(fr5),
+        SCRATCH_FP(fr6),        SCRATCH_FP(fr7),
+        SCRATCH_FP(fr8),        SCRATCH_FP(fr9),
+        SCRATCH_FP(fr10),       SCRATCH_FP(fr11),
+        SCRATCH_FP(fr12),       SCRATCH_FP(fr13),
+        SCRATCH_FP(fr14),       SCRATCH_FP(fr15),
+        PRESERVED_FP(fr16),     PRESERVED_FP(fr17),
+        PRESERVED_FP(fr18),     PRESERVED_FP(fr19),
+        PRESERVED_FP(fr20),     PRESERVED_FP(fr21),
+        PRESERVED_FP(fr22),     PRESERVED_FP(fr23),
+        PRESERVED_FP(fr24),     PRESERVED_FP(fr25),
+        PRESERVED_FP(fr26),     PRESERVED_FP(fr27),
+        PRESERVED_FP(fr28),     PRESERVED_FP(fr29),
+        PRESERVED_FP(fr30),     PRESERVED_FP(fr31),
+        HIGH_FP(fr32),  HIGH_FP(fr33),  HIGH_FP(fr34),  HIGH_FP(fr35),
+        HIGH_FP(fr36),  HIGH_FP(fr37),  HIGH_FP(fr38),  HIGH_FP(fr39),
+        HIGH_FP(fr40),  HIGH_FP(fr41),  HIGH_FP(fr42),  HIGH_FP(fr43),
+        HIGH_FP(fr44),  HIGH_FP(fr45),  HIGH_FP(fr46),  HIGH_FP(fr47),
+        HIGH_FP(fr48),  HIGH_FP(fr49),  HIGH_FP(fr50),  HIGH_FP(fr51),
+        HIGH_FP(fr52),  HIGH_FP(fr53),  HIGH_FP(fr54),  HIGH_FP(fr55),
+        HIGH_FP(fr56),  HIGH_FP(fr57),  HIGH_FP(fr58),  HIGH_FP(fr59),
+        HIGH_FP(fr60),  HIGH_FP(fr61),  HIGH_FP(fr62),  HIGH_FP(fr63),
+        HIGH_FP(fr64),  HIGH_FP(fr65),  HIGH_FP(fr66),  HIGH_FP(fr67),
+        HIGH_FP(fr68),  HIGH_FP(fr69),  HIGH_FP(fr70),  HIGH_FP(fr71),
+        HIGH_FP(fr72),  HIGH_FP(fr73),  HIGH_FP(fr74),  HIGH_FP(fr75),
+        HIGH_FP(fr76),  HIGH_FP(fr77),  HIGH_FP(fr78),  HIGH_FP(fr79),
+        HIGH_FP(fr80),  HIGH_FP(fr81),  HIGH_FP(fr82),  HIGH_FP(fr83),
+        HIGH_FP(fr84),  HIGH_FP(fr85),  HIGH_FP(fr86),  HIGH_FP(fr87),
+        HIGH_FP(fr88),  HIGH_FP(fr89),  HIGH_FP(fr90),  HIGH_FP(fr91),
+        HIGH_FP(fr92),  HIGH_FP(fr93),  HIGH_FP(fr94),  HIGH_FP(fr95),
+        HIGH_FP(fr96),  HIGH_FP(fr97),  HIGH_FP(fr98),  HIGH_FP(fr99),
+        HIGH_FP(fr100), HIGH_FP(fr101), HIGH_FP(fr102), HIGH_FP(fr103),
+        HIGH_FP(fr104), HIGH_FP(fr105), HIGH_FP(fr106), HIGH_FP(fr107),
+        HIGH_FP(fr108), HIGH_FP(fr109), HIGH_FP(fr110), HIGH_FP(fr111),
+        HIGH_FP(fr112), HIGH_FP(fr113), HIGH_FP(fr114), HIGH_FP(fr115),
+        HIGH_FP(fr116), HIGH_FP(fr117), HIGH_FP(fr118), HIGH_FP(fr119),
+        HIGH_FP(fr120), HIGH_FP(fr121), HIGH_FP(fr122), HIGH_FP(fr123),
+        HIGH_FP(fr124), HIGH_FP(fr125), HIGH_FP(fr126), HIGH_FP(fr127),
+        /*
+         * Predicate registers (256-319)
+	 * These are not individually available. Predicates are
+	 * in the pr register.
+         */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr0-pr7 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr8-pr15 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr16-pr23 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr24-pr31 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr32-pr39 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr40-pr47 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr48-pr55 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* pr56-pr63 */
+        /*
+         * Branch registers (320-327)
+         */
+        SPECIAL(rp),
+        PRESERVED(br1), PRESERVED(br2), PRESERVED(br3), PRESERVED(br4),
+        PRESERVED(br5),
+        SCRATCH(br6),   SCRATCH(br7),
+        /*
+         * Misc other registers (328-333)
+         */
+        -1, -1,
+        SPECIAL(pr),
+        SPECIAL(iip),
+        SPECIAL(psr),
+        SPECIAL(cfm),
+        /*
+         * Application registers (334-461)
+         */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar.k0-ar.k7 */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar8-ar15 (reserved) */
+        SPECIAL(rsc),                           /* ar.rsc */
+        SPECIAL(ndirty),			/* ar.bsp !!YEDI!! */
+        SPECIAL(bspstore),                      /* ar.bspstore */
+        SPECIAL(rnat),                          /* ar.rnat */
+        -1,                                     /* ar20 (reserved) */
+        -1,                                     /* ar.fcr */
+        -1, -1,                                 /* ar22-ar23 (reserved) */
+        -1,                                     /* ar.eflag */
+        SCRATCH(csd),                           /* ar.csd */
+        SCRATCH(ssd),                           /* ar.ssd */
+        -1,                                     /* ar.cflg */
+        -1,                                     /* ar.fsr */
+        -1,                                     /* ar.fir */
+        -1,                                     /* ar.fdr */
+        -1,                                     /* ar31 (reserved) */
+        SCRATCH(ccv),                           /* ar.ccv */
+        -1, -1, -1,                             /* ar33-ar35 (reserved) */
+        SPECIAL(unat),                          /* ar.unat */
+        -1, -1, -1,                             /* ar37-ar39 (reserved) */
+        SPECIAL(fpsr),                          /* ar.fpsr */
+        -1, -1, -1,                             /* ar41-ar43 (reserved) */
+        -1,                                     /* ar.itc */
+        -1, -1, -1,                             /* ar45-ar47 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar48-ar55 (ignored) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar56-ar63 (ignored) */
+        SPECIAL(pfs),                           /* ar.pfs */
+        PRESERVED(lc),                          /* ar.lc */
+        -1,                                     /* ar.ec */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar67-ar74 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar75-ar82 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar83-ar90 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar91-ar98 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar99-ar106 (reserved) */
+        -1, -1, -1, -1, -1,                     /* ar107-ar111 (reserved) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar112-ar119 (ignored) */
+        -1, -1, -1, -1, -1, -1, -1, -1,         /* ar120-ar127 (ignored) */
+};
+
+int
+main()
+{
+	int elem, nelems;
+
+	nelems = sizeof(regofs)/sizeof(regofs[0]);
+	printf("static int reg_offset[%d] = {", nelems);
+	for (elem = 0; elem < nelems; elem++) {
+		if ((elem & 7) == 0)
+			printf("\n  ");
+		printf("%4d", regofs[elem]);
+		if (elem < nelems - 1)
+			putchar(',');
+		if ((elem & 7) != 7)
+			putchar(' ');
+		else
+			printf("\t/* Regs %d-%d. */", elem - 7, elem);
+	}
+	printf("\n};");
+	return (0);
+}