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powerpc: Only initialise opcode indices once

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The gdb TUI is calling gdb_print_insn() (which calls
disassemble_init_powerpc()) enough to show up high in profiles. As
suggested by Alan, only initialise if the indices are empty.

opcodes/ChangeLog:
2015-03-25  Anton Blanchard  <anton@samba.org>

	* ppc-dis.c (disassemble_init_powerpc): Only initialise
	powerpc_opcd_indices and vle_opcd_indices once.
This commit is contained in:
Anton Blanchard 2015-03-25 13:44:28 +11:00
parent c4e676f196
commit 27c49e9a8f
2 changed files with 34 additions and 25 deletions
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5
opcodes/ChangeLog
View File

@ -1,3 +1,8 @@
2015-03-25 Anton Blanchard <anton@samba.org>
* ppc-dis.c (disassemble_init_powerpc): Only initialise
powerpc_opcd_indices and vle_opcd_indices once.
2015-03-25 Anton Blanchard <anton@samba.org>
* ppc-opc.c (powerpc_opcodes): Add slbfee.

54
opcodes/ppc-dis.c
View File

@ -341,37 +341,41 @@ disassemble_init_powerpc (struct disassemble_info *info)
int i;
unsigned short last;
i = powerpc_num_opcodes;
while (--i >= 0)
if (powerpc_opcd_indices[PPC_OPCD_SEGS] == 0)
{
unsigned op = PPC_OP (powerpc_opcodes[i].opcode);
powerpc_opcd_indices[op] = i;
}
i = powerpc_num_opcodes;
while (--i >= 0)
{
unsigned op = PPC_OP (powerpc_opcodes[i].opcode);
last = powerpc_num_opcodes;
for (i = PPC_OPCD_SEGS; i > 0; --i)
{
if (powerpc_opcd_indices[i] == 0)
powerpc_opcd_indices[i] = last;
last = powerpc_opcd_indices[i];
}
powerpc_opcd_indices[op] = i;
}
i = vle_num_opcodes;
while (--i >= 0)
{
unsigned op = VLE_OP (vle_opcodes[i].opcode, vle_opcodes[i].mask);
unsigned seg = VLE_OP_TO_SEG (op);
last = powerpc_num_opcodes;
for (i = PPC_OPCD_SEGS; i > 0; --i)
{
if (powerpc_opcd_indices[i] == 0)
powerpc_opcd_indices[i] = last;
last = powerpc_opcd_indices[i];
}
vle_opcd_indices[seg] = i;
}
i = vle_num_opcodes;
while (--i >= 0)
{
unsigned op = VLE_OP (vle_opcodes[i].opcode, vle_opcodes[i].mask);
unsigned seg = VLE_OP_TO_SEG (op);
last = vle_num_opcodes;
for (i = VLE_OPCD_SEGS; i > 0; --i)
{
if (vle_opcd_indices[i] == 0)
vle_opcd_indices[i] = last;
last = vle_opcd_indices[i];
vle_opcd_indices[seg] = i;
}
last = vle_num_opcodes;
for (i = VLE_OPCD_SEGS; i > 0; --i)
{
if (vle_opcd_indices[i] == 0)
vle_opcd_indices[i] = last;
last = vle_opcd_indices[i];
}
}
if (info->arch == bfd_arch_powerpc)