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sim: bfin: add helpful info for generating test tables

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Mike Frysinger 2013-06-17 04:47:26 +00:00
parent 7a56db5f46
commit 9fb7353ff0
2 changed files with 23 additions and 0 deletions
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4
sim/testsuite/sim/bfin/ChangeLog
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@ -1,3 +1,7 @@
2013-06-17 Mike Frysinger <vapier@gentoo.org>
* se_allopcodes.h: Add debugging related comments.
2013-06-17 Mike Frysinger <vapier@gentoo.org>
* se_allopcodes.h: Do not clear RETN/RETE/RETI.

19
sim/testsuite/sim/bfin/se_allopcodes.h
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@ -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 */