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[PATCH] sim: bfin: add helpful info for generating test tables
- From: Mike Frysinger <vapier at gentoo dot org>
- To: gdb-patches at sourceware dot org
- Date: Mon, 17 Jun 2013 00:47:33 -0400
- Subject: [PATCH] sim: bfin: add helpful info for generating test tables
Committed.
Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2013-06-17 Mike Frysinger <vapier@gentoo.org>
* se_allopcodes.h: Add debugging related comments.
---
sim/testsuite/sim/bfin/se_allopcodes.h | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/sim/testsuite/sim/bfin/se_allopcodes.h b/sim/testsuite/sim/bfin/se_allopcodes.h
index b49862a..8f96125 100644
--- a/sim/testsuite/sim/bfin/se_allopcodes.h
+++ b/sim/testsuite/sim/bfin/se_allopcodes.h
@@ -129,6 +129,25 @@ _match_done:
jump _next_instruction;
_new_instruction:
+ /* The table is generated in memory and can be extracted:
+ (gdb) dump binary memory bin &table next_location
+
+ 16bit:
+ $ od -j6 -x --width=4 bin | \
+ awk '{ s=last; e=strtonum("0x"$2); \
+ printf "\t.dw 0x%04x,\t0x%04x,\t\t0x%02x\n", \
+ s, e-1, strtonum("0x"seq); \
+ last=e; seq=$3}'
+
+ 32bit:
+ $ od -j12 -x --width=8 bin | \
+ awk '{ s=last; e=strtonum("0x"$3$2); \
+ printf "\t.dw 0x%04x, 0x%04x,\t0x%04x, 0x%04x,\t\t0x%02x, 0\n", \
+ and(s,0xffff), rshift(s,16), and(e-1,0xffff), rshift(e-1,16), \
+ strtonum("0x"seq); \
+ last=e; seq=$3}'
+
+ This should be much faster than dumping over serial/jtag. */
se_all_new_insn_stub
/* output the insn (R0) and excause (R3) if diff from last */
--
1.8.2.1