mirror of
https://sourceware.org/git/binutils-gdb.git
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* interp.c: Improve hashing routine to avoid long list
traversals for common instructions. Add HASH_STAT support. Rewrite opcode dispatch code using a big switch instead of cascaded if/else statements. Avoid useless calls to load_mem.
This commit is contained in:
parent
1ba1da8650
commit
baa83bcc80
@ -1,3 +1,10 @@
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Tue May 6 13:24:36 1997 Jeffrey A Law (law@cygnus.com)
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* interp.c: Improve hashing routine to avoid long list
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traversals for common instructions. Add HASH_STAT support.
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Rewrite opcode dispatch code using a big switch instead of
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cascaded if/else statements. Avoid useless calls to load_mem.
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Mon May 5 18:07:48 1997 Jeffrey A Law (law@cygnus.com)
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* mn10300_sim.h (struct _state): Add space for mdrq register.
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@ -17,10 +17,10 @@ int mn10300_debug;
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static SIM_OPEN_KIND sim_kind;
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static char *myname;
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static struct hash_entry *lookup_hash PARAMS ((uint32 ins, int));
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static void dispatch PARAMS ((uint32, uint32, int));
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static long hash PARAMS ((long));
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static void init_system PARAMS ((void));
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#define MAX_HASH 63
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#define MAX_HASH 127
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struct hash_entry
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{
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@ -28,6 +28,9 @@ struct hash_entry
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long opcode;
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long mask;
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struct simops *ops;
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#ifdef HASH_STAT
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unsigned long count;
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#endif
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};
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struct hash_entry hash_table[MAX_HASH+1];
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@ -39,28 +42,51 @@ static INLINE long
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hash(insn)
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long insn;
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{
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/* These are one byte insns. */
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/* These are one byte insns, we special case these since, in theory,
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they should be the most heavily used. */
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if ((insn & 0xffffff00) == 0)
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{
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if ((insn & 0xf0) == 0x00
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|| (insn & 0xf0) == 0x40)
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return (insn & 0xf3) & 0x3f;
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switch (insn & 0xf0)
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{
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case 0x00:
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return 0x70;
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if ((insn & 0xf0) == 0x10
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|| (insn & 0xf0) == 0x30
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|| (insn & 0xf0) == 0x50)
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return (insn & 0xfc) & 0x3f;
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case 0x40:
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return 0x71;
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if ((insn & 0xf0) == 0x60
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|| (insn & 0xf0) == 0x70
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|| (insn & 0xf0) == 0x80
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|| (insn & 0xf0) == 0x90
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|| (insn & 0xf0) == 0xa0
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|| (insn & 0xf0) == 0xb0
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|| (insn & 0xf0) == 0xe0)
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return (insn & 0xf0) & 0x3f;
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case 0x10:
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return 0x72;
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return (insn & 0xff) & 0x3f;
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case 0x30:
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return 0x73;
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case 0x50:
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return 0x74;
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case 0x60:
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return 0x75;
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case 0x70:
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return 0x76;
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case 0x80:
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return 0x77;
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case 0x90:
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return 0x78;
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case 0xa0:
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return 0x79;
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case 0xb0:
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return 0x7a;
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case 0xe0:
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return 0x7b;
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default:
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return 0x7c;
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}
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}
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/* These are two byte insns */
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@ -68,57 +94,86 @@ hash(insn)
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{
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if ((insn & 0xf000) == 0x2000
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|| (insn & 0xf000) == 0x5000)
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return ((insn & 0xfc00) >> 8) & 0x3f;
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return ((insn & 0xfc00) >> 8) & 0x7f;
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if ((insn & 0xf000) == 0x4000)
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return ((insn & 0xf300) >> 8) & 0x3f;
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return ((insn & 0xf300) >> 8) & 0x7f;
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if ((insn & 0xf000) == 0x8000
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|| (insn & 0xf000) == 0x9000
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|| (insn & 0xf000) == 0xa000
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|| (insn & 0xf000) == 0xb000)
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return ((insn & 0xf000) >> 8) & 0x3f;
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return ((insn & 0xf000) >> 8) & 0x7f;
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return ((insn & 0xff00) >> 8) & 0x3f;
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if ((insn & 0xff00) == 0xf000
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|| (insn & 0xff00) == 0xf100
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|| (insn & 0xff00) == 0xf200
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|| (insn & 0xff00) == 0xf500
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|| (insn & 0xff00) == 0xf600)
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return ((insn & 0xfff0) >> 4) & 0x7f;
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if ((insn & 0xf000) == 0xc000)
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return ((insn & 0xff00) >> 8) & 0x7f;
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return ((insn & 0xffc0) >> 6) & 0x7f;
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}
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/* These are three byte insns. */
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if ((insn & 0xff000000) == 0)
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{
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if ((insn & 0xf00000) == 0x000000)
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return ((insn & 0xf30000) >> 16) & 0x3f;
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return ((insn & 0xf30000) >> 16) & 0x7f;
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if ((insn & 0xf00000) == 0x200000
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|| (insn & 0xf00000) == 0x300000)
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return ((insn & 0xfc0000) >> 16) & 0x3f;
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return ((insn & 0xfc0000) >> 16) & 0x7f;
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return ((insn & 0xff0000) >> 16) & 0x3f;
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if ((insn & 0xff0000) == 0xf80000)
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return ((insn & 0xfff000) >> 12) & 0x7f;
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if ((insn & 0xff0000) == 0xf90000)
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return ((insn & 0xfffc00) >> 10) & 0x7f;
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return ((insn & 0xff0000) >> 16) & 0x7f;
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}
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/* These are four byte or larger insns. */
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return ((insn & 0xff000000) >> 24) & 0x3f;
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if ((insn & 0xf0000000) == 0xf0000000)
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return ((insn & 0xfff00000) >> 20) & 0x7f;
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return ((insn & 0xff000000) >> 24) & 0x7f;
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}
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static struct hash_entry *
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lookup_hash (ins, length)
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uint32 ins;
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static void
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dispatch (insn, extension, length)
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uint32 insn;
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uint32 extension;
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int length;
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{
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struct hash_entry *h;
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h = &hash_table[hash(ins)];
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h = &hash_table[hash(insn)];
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while ((ins & h->mask) != h->opcode
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|| (length != h->ops->length))
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while ((insn & h->mask) != h->opcode
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|| (length != h->ops->length))
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{
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if (h->next == NULL)
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if (!h->next)
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{
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(*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR looking up hash for 0x%x, PC=0x%x\n", ins, PC);
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(*mn10300_callback->printf_filtered) (mn10300_callback,
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"ERROR looking up hash for 0x%x, PC=0x%x\n", insn, PC);
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exit(1);
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}
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h = h->next;
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}
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return (h);
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#ifdef HASH_STAT
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h->count++;
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#endif
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/* Now call the right function. */
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(h->ops->func)(insn, extension);
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PC += length;
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}
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/* FIXME These would more efficient to use than load_mem/store_mem,
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@ -316,14 +371,28 @@ sim_open (kind,argv)
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(*mn10300_callback->printf_filtered) (mn10300_callback, "ERROR: unsupported option(s): %s\n",*p);
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}
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/* put all the opcodes in the hash table */
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/* put all the opcodes in the hash table */
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for (s = Simops; s->func; s++)
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{
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h = &hash_table[hash(s->opcode)];
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/* go to the last entry in the chain */
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while (h->next)
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h = h->next;
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{
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/* Don't insert the same opcode more than once. */
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if (h->opcode == s->opcode
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&& h->mask == s->mask
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&& h->ops == s)
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continue;
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else
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h = h->next;
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}
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/* Don't insert the same opcode more than once. */
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if (h->opcode == s->opcode
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&& h->mask == s->mask
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&& h->ops == s)
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continue;
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if (h->ops)
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{
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@ -333,8 +402,12 @@ sim_open (kind,argv)
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h->ops = s;
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h->mask = s->mask;
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h->opcode = s->opcode;
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#if HASH_STAT
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h->count = 0;
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#endif
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}
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/* fudge our descriptor for now */
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return (SIM_DESC) 1;
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}
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@ -362,6 +435,13 @@ sim_set_profile_size (n)
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(*mn10300_callback->printf_filtered) (mn10300_callback, "sim_set_profile_size %d\n", n);
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}
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int
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sim_stop (sd)
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SIM_DESC sd;
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{
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return 0;
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}
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void
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sim_resume (sd, step, siggnal)
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SIM_DESC sd;
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@ -381,212 +461,396 @@ sim_resume (sd, step, siggnal)
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unsigned long insn, extension;
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/* Fetch the current instruction. */
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inst = load_mem_big (PC, 1);
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inst = load_mem_big (PC, 2);
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oldpc = PC;
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/* These are one byte insns. */
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if ((inst & 0xf3) == 0x00
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|| (inst & 0xf0) == 0x10
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|| (inst & 0xfc) == 0x3c
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|| (inst & 0xf3) == 0x41
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|| (inst & 0xf3) == 0x40
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|| (inst & 0xfc) == 0x50
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|| (inst & 0xfc) == 0x54
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|| (inst & 0xf0) == 0x60
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|| (inst & 0xf0) == 0x70
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|| ((inst & 0xf0) == 0x80
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&& (inst & 0x0c) >> 2 != (inst & 0x03))
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|| ((inst & 0xf0) == 0x90
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&& (inst & 0x0c) >> 2 != (inst & 0x03))
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|| ((inst & 0xf0) == 0xa0
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&& (inst & 0x0c) >> 2 != (inst & 0x03))
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|| ((inst & 0xf0) == 0xb0
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&& (inst & 0x0c) >> 2 != (inst & 0x03))
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|| (inst & 0xff) == 0xcb
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|| (inst & 0xfc) == 0xd0
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|| (inst & 0xfc) == 0xd4
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|| (inst & 0xfc) == 0xd8
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|| (inst & 0xf0) == 0xe0
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|| (inst & 0xff) == 0xff)
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/* Using a giant case statement may seem like a waste because of the
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code/rodata size the table itself will consume. However, using
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a giant case statement speeds up the simulator by 10-15% by avoiding
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cascading if/else statements or cascading case statements. */
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switch ((inst >> 8) & 0xff)
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{
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insn = inst;
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h = lookup_hash (insn, 1);
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extension = 0;
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(h->ops->func)(insn, extension);
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PC += 1;
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}
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/* All the single byte insns except 0x80, 0x90, 0xa0, 0xb0
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which must be handled specially. */
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case 0x00:
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case 0x04:
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case 0x08:
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case 0x0c:
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case 0x11:
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case 0x12:
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case 0x13:
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case 0x14:
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case 0x15:
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case 0x16:
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case 0x17:
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case 0x18:
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case 0x19:
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case 0x1a:
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case 0x1b:
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case 0x1c:
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case 0x1d:
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case 0x1e:
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case 0x1f:
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case 0x3c:
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case 0x3d:
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case 0x3e:
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case 0x3f:
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case 0x40:
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case 0x41:
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case 0x44:
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case 0x45:
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case 0x48:
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case 0x49:
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case 0x4c:
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case 0x4d:
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case 0x50:
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case 0x51:
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case 0x52:
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case 0x53:
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case 0x54:
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case 0x55:
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case 0x56:
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case 0x57:
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case 0x60:
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case 0x61:
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case 0x62:
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case 0x63:
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case 0x64:
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case 0x65:
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case 0x66:
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case 0x67:
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case 0x68:
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case 0x69:
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case 0x6a:
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case 0x6b:
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case 0x6c:
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case 0x6d:
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case 0x6e:
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case 0x6f:
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case 0x70:
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case 0x71:
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case 0x72:
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case 0x73:
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case 0x74:
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case 0x75:
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case 0x76:
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case 0x77:
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case 0x78:
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case 0x79:
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case 0x7a:
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case 0x7b:
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case 0x7c:
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case 0x7d:
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case 0x7e:
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case 0x7f:
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case 0xcb:
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case 0xd0:
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case 0xd1:
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case 0xd2:
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case 0xd3:
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case 0xd4:
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case 0xd5:
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case 0xd6:
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case 0xd7:
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case 0xd8:
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case 0xd9:
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case 0xda:
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case 0xdb:
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case 0xe0:
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case 0xe1:
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case 0xe2:
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case 0xe3:
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case 0xe4:
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case 0xe5:
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case 0xe6:
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case 0xe7:
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case 0xe8:
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case 0xe9:
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case 0xea:
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case 0xeb:
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case 0xec:
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case 0xed:
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case 0xee:
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case 0xef:
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case 0xff:
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insn = (inst >> 8) & 0xff;
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extension = 0;
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dispatch (insn, extension, 1);
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break;
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/* These are two byte insns. */
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else if ((inst & 0xf0) == 0x80
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|| (inst & 0xf0) == 0x90
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|| (inst & 0xf0) == 0xa0
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|| (inst & 0xf0) == 0xb0
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|| (inst & 0xfc) == 0x20
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|| (inst & 0xfc) == 0x28
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|| (inst & 0xf3) == 0x43
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|| (inst & 0xf3) == 0x42
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|| (inst & 0xfc) == 0x58
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|| (inst & 0xfc) == 0x5c
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|| ((inst & 0xf0) == 0xc0
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&& (inst & 0xff) != 0xcb
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&& (inst & 0xff) != 0xcc
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&& (inst & 0xff) != 0xcd)
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|| (inst & 0xff) == 0xf0
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|| (inst & 0xff) == 0xf1
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|| (inst & 0xff) == 0xf2
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|| (inst & 0xff) == 0xf3
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|| (inst & 0xff) == 0xf4
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|| (inst & 0xff) == 0xf5
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|| (inst & 0xff) == 0xf6)
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{
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insn = load_mem_big (PC, 2);
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h = lookup_hash (insn, 2);
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extension = 0;
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(h->ops->func)(insn, extension);
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PC += 2;
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}
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/* Special cases where dm == dn is used to encode a different
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instruction. */
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case 0x80:
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case 0x85:
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case 0x8a:
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case 0x8f:
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case 0x90:
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case 0x95:
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case 0x9a:
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case 0x9f:
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case 0xa0:
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case 0xa5:
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case 0xaa:
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case 0xaf:
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case 0xb0:
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case 0xb5:
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case 0xba:
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case 0xbf:
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insn = inst;
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extension = 0;
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dispatch (insn, extension, 2);
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break;
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/* These are three byte insns. */
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else if ((inst & 0xff) == 0xf8
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|| (inst & 0xff) == 0xcc
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|| (inst & 0xff) == 0xf9
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|| (inst & 0xf3) == 0x01
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|| (inst & 0xf3) == 0x02
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|| (inst & 0xf3) == 0x03
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|| (inst & 0xfc) == 0x24
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|| (inst & 0xfc) == 0x2c
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|| (inst & 0xfc) == 0x30
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||||
|| (inst & 0xfc) == 0x34
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||||
|| (inst & 0xfc) == 0x38
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||||
|| (inst & 0xff) == 0xde
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||||
|| (inst & 0xff) == 0xdf
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||||
|| (inst & 0xff) == 0xcc)
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||||
{
|
||||
insn = load_mem_big (PC, 3);
|
||||
h = lookup_hash (insn, 3);
|
||||
extension = 0;
|
||||
/* If it's a format D1 insn, "ret", or "retf" insn, then
|
||||
there's no need to worry about endianness. Others have
|
||||
a 16bit immediate in little endian form that we need to
|
||||
extract. */
|
||||
if (h->ops->format == FMT_D1
|
||||
|| h->opcode == 0xdf0000
|
||||
|| h->opcode == 0xde0000)
|
||||
(h->ops->func)(insn, extension);
|
||||
else
|
||||
{
|
||||
insn &= 0xff0000;
|
||||
insn |= load_mem (PC + 1, 2);
|
||||
(h->ops->func)(insn, extension);
|
||||
}
|
||||
PC += 3;
|
||||
}
|
||||
case 0x81:
|
||||
case 0x82:
|
||||
case 0x83:
|
||||
case 0x84:
|
||||
case 0x86:
|
||||
case 0x87:
|
||||
case 0x88:
|
||||
case 0x89:
|
||||
case 0x8b:
|
||||
case 0x8c:
|
||||
case 0x8d:
|
||||
case 0x8e:
|
||||
case 0x91:
|
||||
case 0x92:
|
||||
case 0x93:
|
||||
case 0x94:
|
||||
case 0x96:
|
||||
case 0x97:
|
||||
case 0x98:
|
||||
case 0x99:
|
||||
case 0x9b:
|
||||
case 0x9c:
|
||||
case 0x9d:
|
||||
case 0x9e:
|
||||
case 0xa1:
|
||||
case 0xa2:
|
||||
case 0xa3:
|
||||
case 0xa4:
|
||||
case 0xa6:
|
||||
case 0xa7:
|
||||
case 0xa8:
|
||||
case 0xa9:
|
||||
case 0xab:
|
||||
case 0xac:
|
||||
case 0xad:
|
||||
case 0xae:
|
||||
case 0xb1:
|
||||
case 0xb2:
|
||||
case 0xb3:
|
||||
case 0xb4:
|
||||
case 0xb6:
|
||||
case 0xb7:
|
||||
case 0xb8:
|
||||
case 0xb9:
|
||||
case 0xbb:
|
||||
case 0xbc:
|
||||
case 0xbd:
|
||||
case 0xbe:
|
||||
insn = (inst >> 8) & 0xff;
|
||||
extension = 0;
|
||||
dispatch (insn, extension, 1);
|
||||
break;
|
||||
|
||||
/* These are four byte insns. */
|
||||
else if ((inst & 0xff) == 0xfa
|
||||
|| (inst & 0xff) == 0xfb)
|
||||
{
|
||||
insn = load_mem_big (PC, 4);
|
||||
h = lookup_hash (insn, 4);
|
||||
extension = 0;
|
||||
/* This must be a format D2 insn; a small number of such insns
|
||||
don't have any 16bit immediates (they instead have two 8 bit
|
||||
immediates). */
|
||||
if (h->opcode == 0xfaf80000
|
||||
|| h->opcode == 0xfaf00000
|
||||
|| h->opcode == 0xfaf40000)
|
||||
(h->ops->func)(insn, extension);
|
||||
else
|
||||
{
|
||||
insn &= 0xffff0000;
|
||||
insn |= load_mem (PC + 2, 2);
|
||||
(h->ops->func)(insn, extension);
|
||||
}
|
||||
PC += 4;
|
||||
}
|
||||
/* The two byte instructions. */
|
||||
case 0x20:
|
||||
case 0x21:
|
||||
case 0x22:
|
||||
case 0x23:
|
||||
case 0x28:
|
||||
case 0x29:
|
||||
case 0x2a:
|
||||
case 0x2b:
|
||||
case 0x42:
|
||||
case 0x43:
|
||||
case 0x46:
|
||||
case 0x47:
|
||||
case 0x4a:
|
||||
case 0x4b:
|
||||
case 0x4e:
|
||||
case 0x4f:
|
||||
case 0x58:
|
||||
case 0x59:
|
||||
case 0x5a:
|
||||
case 0x5b:
|
||||
case 0x5c:
|
||||
case 0x5d:
|
||||
case 0x5e:
|
||||
case 0x5f:
|
||||
case 0xc0:
|
||||
case 0xc1:
|
||||
case 0xc2:
|
||||
case 0xc3:
|
||||
case 0xc4:
|
||||
case 0xc5:
|
||||
case 0xc6:
|
||||
case 0xc7:
|
||||
case 0xc8:
|
||||
case 0xc9:
|
||||
case 0xca:
|
||||
case 0xce:
|
||||
case 0xcf:
|
||||
case 0xf0:
|
||||
case 0xf1:
|
||||
case 0xf2:
|
||||
case 0xf3:
|
||||
case 0xf4:
|
||||
case 0xf5:
|
||||
case 0xf6:
|
||||
insn = inst;
|
||||
extension = 0;
|
||||
dispatch (insn, extension, 2);
|
||||
break;
|
||||
|
||||
/* These are five byte insns. */
|
||||
else if ((inst & 0xff) == 0xcd
|
||||
|| (inst & 0xff) == 0xdc)
|
||||
{
|
||||
insn = load_mem_big (PC, 4);
|
||||
h = lookup_hash (insn, 5);
|
||||
/* The three byte insns with a 16bit operand in little endian
|
||||
format. */
|
||||
case 0x01:
|
||||
case 0x02:
|
||||
case 0x03:
|
||||
case 0x05:
|
||||
case 0x06:
|
||||
case 0x07:
|
||||
case 0x09:
|
||||
case 0x0a:
|
||||
case 0x0b:
|
||||
case 0x0d:
|
||||
case 0x0e:
|
||||
case 0x0f:
|
||||
case 0x24:
|
||||
case 0x25:
|
||||
case 0x26:
|
||||
case 0x27:
|
||||
case 0x2c:
|
||||
case 0x2d:
|
||||
case 0x2e:
|
||||
case 0x2f:
|
||||
case 0x30:
|
||||
case 0x31:
|
||||
case 0x32:
|
||||
case 0x33:
|
||||
case 0x34:
|
||||
case 0x35:
|
||||
case 0x36:
|
||||
case 0x37:
|
||||
case 0x38:
|
||||
case 0x39:
|
||||
case 0x3a:
|
||||
case 0x3b:
|
||||
case 0xcc:
|
||||
insn = load_mem (PC, 1);
|
||||
insn <<= 16;
|
||||
insn |= load_mem (PC + 1, 2);
|
||||
extension = 0;
|
||||
dispatch (insn, extension, 3);
|
||||
break;
|
||||
|
||||
/* This must be a format S4 insn. */
|
||||
if (h->opcode == 0xdc000000)
|
||||
{
|
||||
/* A "jmp" instruction with a 32bit immediate stored
|
||||
in little endian form. */
|
||||
unsigned long temp;
|
||||
temp = load_mem (PC + 1, 4);
|
||||
insn &= 0xff000000;
|
||||
insn |= (temp & 0xffffff00) >> 8;
|
||||
extension = temp & 0xff;
|
||||
}
|
||||
else
|
||||
{
|
||||
/* A "call" instruction with a 16bit immediate in little
|
||||
endian form. */
|
||||
unsigned long temp;
|
||||
temp = load_mem (PC + 1, 2);
|
||||
insn &= 0xff0000ff;
|
||||
insn |= temp << 8;
|
||||
extension = load_mem (PC + 4, 1);
|
||||
}
|
||||
(h->ops->func)(insn, extension);
|
||||
PC += 5;
|
||||
}
|
||||
/* The three byte insns without 16bit operand. */
|
||||
case 0xde:
|
||||
case 0xdf:
|
||||
case 0xf8:
|
||||
case 0xf9:
|
||||
insn = load_mem_big (PC, 3);
|
||||
extension = 0;
|
||||
dispatch (insn, extension, 3);
|
||||
break;
|
||||
|
||||
/* Four byte insns. */
|
||||
case 0xfa:
|
||||
case 0xfb:
|
||||
if ((inst & 0xfffc) == 0xfaf0
|
||||
|| (inst & 0xfffc) == 0xfaf4
|
||||
|| (inst & 0xfffc) == 0xfaf8)
|
||||
insn = load_mem_big (PC, 4);
|
||||
else
|
||||
{
|
||||
insn = inst;
|
||||
insn <<= 16;
|
||||
insn |= load_mem (PC + 2, 2);
|
||||
extension = 0;
|
||||
}
|
||||
dispatch (insn, extension, 4);
|
||||
break;
|
||||
|
||||
/* These are six byte insns. */
|
||||
else if ((inst & 0xff) == 0xfd
|
||||
|| (inst & 0xff) == 0xfc)
|
||||
{
|
||||
unsigned long temp;
|
||||
/* Five byte insns. */
|
||||
case 0xcd:
|
||||
insn = load_mem (PC, 1);
|
||||
insn <<= 24;
|
||||
insn |= (load_mem (PC + 1, 2) << 8);
|
||||
insn |= load_mem (PC + 3, 1);
|
||||
extension = load_mem (PC + 4, 1);
|
||||
dispatch (insn, extension, 5);
|
||||
break;
|
||||
|
||||
insn = load_mem_big (PC, 4);
|
||||
h = lookup_hash (insn, 6);
|
||||
case 0xdc:
|
||||
insn = load_mem (PC, 1);
|
||||
insn <<= 24;
|
||||
extension = load_mem (PC + 1, 4);
|
||||
insn |= (extension & 0xffffff00) >> 8;
|
||||
extension &= 0xff;
|
||||
dispatch (insn, extension, 5);
|
||||
break;
|
||||
|
||||
/* Six byte insns. */
|
||||
case 0xfc:
|
||||
case 0xfd:
|
||||
insn = (inst << 16);
|
||||
extension = load_mem (PC + 2, 4);
|
||||
insn |= ((extension & 0xffff0000) >> 16);
|
||||
extension &= 0xffff;
|
||||
dispatch (insn, extension, 6);
|
||||
break;
|
||||
|
||||
case 0xdd:
|
||||
insn = load_mem (PC, 1) << 24;
|
||||
extension = load_mem (PC + 1, 4);
|
||||
insn |= ((extension >> 8) & 0xffffff);
|
||||
extension = (extension & 0xff) << 16;
|
||||
extension |= load_mem (PC + 5, 1) << 8;
|
||||
extension |= load_mem (PC + 6, 1);
|
||||
dispatch (insn, extension, 7);
|
||||
break;
|
||||
|
||||
temp = load_mem (PC + 2, 4);
|
||||
insn &= 0xffff0000;
|
||||
insn |= (temp >> 16) & 0xffff;
|
||||
extension = temp & 0xffff;
|
||||
(h->ops->func)(insn, extension);
|
||||
PC += 6;
|
||||
}
|
||||
case 0xfe:
|
||||
insn = inst << 16;
|
||||
extension = load_mem (PC + 2, 4);
|
||||
insn |= ((extension >> 16) & 0xffff);
|
||||
extension <<= 8;
|
||||
extension &= 0xffff00;
|
||||
extension |= load_mem (PC + 6, 1);
|
||||
dispatch (insn, extension, 7);
|
||||
break;
|
||||
|
||||
/* Else its a seven byte insns (in theory). */
|
||||
else
|
||||
{
|
||||
insn = load_mem_big (PC, 4);
|
||||
h = lookup_hash (insn, 7);
|
||||
|
||||
if (h->ops->format == FMT_S6)
|
||||
{
|
||||
unsigned long temp;
|
||||
|
||||
temp = load_mem (PC + 1, 4);
|
||||
insn &= 0xff000000;
|
||||
insn |= (temp >> 8) & 0xffffff;
|
||||
|
||||
extension = (temp & 0xff) << 16;
|
||||
extension |= load_mem (PC + 5, 1) << 8;
|
||||
extension |= load_mem (PC + 6, 1);
|
||||
}
|
||||
else
|
||||
{
|
||||
unsigned long temp;
|
||||
|
||||
temp = load_mem (PC + 2, 4);
|
||||
insn &= 0xffff0000;
|
||||
insn |= (temp >> 16) & 0xffff;
|
||||
extension = (temp & 0xffff) << 8;
|
||||
extension = load_mem (PC + 6, 1);
|
||||
}
|
||||
(h->ops->func)(insn, extension);
|
||||
PC += 7;
|
||||
default:
|
||||
abort ();
|
||||
}
|
||||
}
|
||||
while (!State.exception);
|
||||
|
||||
#ifdef HASH_STAT
|
||||
{
|
||||
int i;
|
||||
for (i = 0; i < MAX_HASH; i++)
|
||||
{
|
||||
struct hash_entry *h;
|
||||
h = &hash_table[i];
|
||||
|
||||
printf("hash 0x%x:\n", i);
|
||||
|
||||
while (h)
|
||||
{
|
||||
printf("h->opcode = 0x%x, count = 0x%x\n", h->opcode, h->count);
|
||||
h = h->next;
|
||||
}
|
||||
|
||||
printf("\n\n");
|
||||
}
|
||||
fflush (stdout);
|
||||
}
|
||||
#endif
|
||||
|
||||
}
|
||||
|
||||
int
|
||||
|
Loading…
Reference in New Issue
Block a user