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binutils-gdb/bfd/cpu-ia64-opc.c
Alan Modra 113202d6bc * cpu-ia64-opc.c (ext_imms_scaled): Don't sign extend using shifts. 
(ins_imms, ins_immsm1u4): Likewise.  Warning fix.
2003-06-30 04:09:27 +00:00

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/* Copyright 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
Contributed by David Mosberger-Tang <davidm@hpl.hp.com>
This file is part of BFD, the Binary File Descriptor library.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* Logically, this code should be part of libopcode but since some of
the operand insertion/extraction functions help bfd to implement
relocations, this code is included as part of cpu-ia64.c. This
avoids circular dependencies between libopcode and libbfd and also
obviates the need for applications to link in libopcode when all
they really want is libbfd.
--davidm Mon Apr 13 22:14:02 1998 */
#include "../opcodes/ia64-opc.h"
#define NELEMS(a) ((int) (sizeof (a) / sizeof ((a)[0])))
static const char*
ins_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,
ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)
{
return "internal error---this shouldn't happen";
}
static const char*
ext_rsvd (const struct ia64_operand *self ATTRIBUTE_UNUSED,
ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)
{
return "internal error---this shouldn't happen";
}
static const char*
ins_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,
ia64_insn value ATTRIBUTE_UNUSED, ia64_insn *code ATTRIBUTE_UNUSED)
{
return 0;
}
static const char*
ext_const (const struct ia64_operand *self ATTRIBUTE_UNUSED,
ia64_insn code ATTRIBUTE_UNUSED, ia64_insn *valuep ATTRIBUTE_UNUSED)
{
return 0;
}
static const char*
ins_reg (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
if (value >= 1u << self->field[0].bits)
return "register number out of range";
*code |= value << self->field[0].shift;
return 0;
}
static const char*
ext_reg (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
*valuep = ((code >> self->field[0].shift)
& ((1u << self->field[0].bits) - 1));
return 0;
}
static const char*
ins_immu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
ia64_insn new = 0;
int i;
for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
{
new |= ((value & ((((ia64_insn) 1) << self->field[i].bits) - 1))
<< self->field[i].shift);
value >>= self->field[i].bits;
}
if (value)
return "integer operand out of range";
*code |= new;
return 0;
}
static const char*
ext_immu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
BFD_HOST_U_64_BIT value = 0;
int i, bits = 0, total = 0;
for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
{
bits = self->field[i].bits;
value |= ((code >> self->field[i].shift)
& ((((BFD_HOST_U_64_BIT) 1) << bits) - 1)) << total;
total += bits;
}
*valuep = value;
return 0;
}
static const char*
ins_immus8 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
if (value & 0x7)
return "value not an integer multiple of 8";
return ins_immu (self, value >> 3, code);
}
static const char*
ext_immus8 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
const char *result;
result = ext_immu (self, code, valuep);
if (result)
return result;
*valuep = *valuep << 3;
return 0;
}
static const char*
ins_imms_scaled (const struct ia64_operand *self, ia64_insn value,
ia64_insn *code, int scale)
{
BFD_HOST_64_BIT svalue = value, sign_bit = 0;
ia64_insn new = 0;
int i;
svalue >>= scale;
for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
{
new |= ((svalue & ((((ia64_insn) 1) << self->field[i].bits) - 1))
<< self->field[i].shift);
sign_bit = (svalue >> (self->field[i].bits - 1)) & 1;
svalue >>= self->field[i].bits;
}
if ((!sign_bit && svalue != 0) || (sign_bit && svalue != -1))
return "integer operand out of range";
*code |= new;
return 0;
}
static const char*
ext_imms_scaled (const struct ia64_operand *self, ia64_insn code,
ia64_insn *valuep, int scale)
{
int i, bits = 0, total = 0;
BFD_HOST_64_BIT val = 0, sign;
for (i = 0; i < NELEMS (self->field) && self->field[i].bits; ++i)
{
bits = self->field[i].bits;
val |= ((code >> self->field[i].shift)
& ((((BFD_HOST_U_64_BIT) 1) << bits) - 1)) << total;
total += bits;
}
/* sign extend: */
sign = (BFD_HOST_64_BIT) 1 << (total - 1);
val = (val ^ sign) - sign;
*valuep = (val << scale);
return 0;
}
static const char*
ins_imms (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
return ins_imms_scaled (self, value, code, 0);
}
static const char*
ins_immsu4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;
return ins_imms_scaled (self, value, code, 0);
}
static const char*
ext_imms (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
return ext_imms_scaled (self, code, valuep, 0);
}
static const char*
ins_immsm1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
--value;
return ins_imms_scaled (self, value, code, 0);
}
static const char*
ins_immsm1u4 (const struct ia64_operand *self, ia64_insn value,
ia64_insn *code)
{
value = ((value & 0xffffffff) ^ 0x80000000) - 0x80000000;
--value;
return ins_imms_scaled (self, value, code, 0);
}
static const char*
ext_immsm1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
const char *res = ext_imms_scaled (self, code, valuep, 0);
++*valuep;
return res;
}
static const char*
ins_imms1 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
return ins_imms_scaled (self, value, code, 1);
}
static const char*
ext_imms1 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
return ext_imms_scaled (self, code, valuep, 1);
}
static const char*
ins_imms4 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
return ins_imms_scaled (self, value, code, 4);
}
static const char*
ext_imms4 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
return ext_imms_scaled (self, code, valuep, 4);
}
static const char*
ins_imms16 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
return ins_imms_scaled (self, value, code, 16);
}
static const char*
ext_imms16 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
return ext_imms_scaled (self, code, valuep, 16);
}
static const char*
ins_cimmu (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
ia64_insn mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
return ins_immu (self, value ^ mask, code);
}
static const char*
ext_cimmu (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
const char *result;
ia64_insn mask;
mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
result = ext_immu (self, code, valuep);
if (!result)
{
mask = (((ia64_insn) 1) << self->field[0].bits) - 1;
*valuep ^= mask;
}
return result;
}
static const char*
ins_cnt (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
--value;
if (value >= ((BFD_HOST_U_64_BIT) 1) << self->field[0].bits)
return "count out of range";
*code |= value << self->field[0].shift;
return 0;
}
static const char*
ext_cnt (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
*valuep = ((code >> self->field[0].shift)
& ((((BFD_HOST_U_64_BIT) 1) << self->field[0].bits) - 1)) + 1;
return 0;
}
static const char*
ins_cnt2b (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
--value;
if (value > 2)
return "count must be in range 1..3";
*code |= value << self->field[0].shift;
return 0;
}
static const char*
ext_cnt2b (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
*valuep = ((code >> self->field[0].shift) & 0x3) + 1;
return 0;
}
static const char*
ins_cnt2c (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
switch (value)
{
case 0: value = 0; break;
case 7: value = 1; break;
case 15: value = 2; break;
case 16: value = 3; break;
default: return "count must be 0, 7, 15, or 16";
}
*code |= value << self->field[0].shift;
return 0;
}
static const char*
ext_cnt2c (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
ia64_insn value;
value = (code >> self->field[0].shift) & 0x3;
switch (value)
{
case 0: value = 0; break;
case 1: value = 7; break;
case 2: value = 15; break;
case 3: value = 16; break;
}
*valuep = value;
return 0;
}
static const char*
ins_inc3 (const struct ia64_operand *self, ia64_insn value, ia64_insn *code)
{
BFD_HOST_64_BIT val = value;
BFD_HOST_U_64_BIT sign = 0;
if (val < 0)
{
sign = 0x4;
value = -value;
}
switch (value)
{
case 1: value = 3; break;
case 4: value = 2; break;
case 8: value = 1; break;
case 16: value = 0; break;
default: return "count must be +/- 1, 4, 8, or 16";
}
*code |= (sign | value) << self->field[0].shift;
return 0;
}
static const char*
ext_inc3 (const struct ia64_operand *self, ia64_insn code, ia64_insn *valuep)
{
BFD_HOST_64_BIT val;
int negate;
val = (code >> self->field[0].shift) & 0x7;
negate = val & 0x4;
switch (val & 0x3)
{
case 0: val = 16; break;
case 1: val = 8; break;
case 2: val = 4; break;
case 3: val = 1; break;
}
if (negate)
val = -val;
*valuep = val;
return 0;
}
#define CST IA64_OPND_CLASS_CST
#define REG IA64_OPND_CLASS_REG
#define IND IA64_OPND_CLASS_IND
#define ABS IA64_OPND_CLASS_ABS
#define REL IA64_OPND_CLASS_REL
#define SDEC IA64_OPND_FLAG_DECIMAL_SIGNED
#define UDEC IA64_OPND_FLAG_DECIMAL_UNSIGNED
const struct ia64_operand elf64_ia64_operands[IA64_OPND_COUNT] =
{
/* constants: */
{ CST, ins_const, ext_const, "NIL", {{ 0, 0}}, 0, "<none>" },
{ CST, ins_const, ext_const, "ar.csd", {{ 0, 0}}, 0, "ar.csd" },
{ CST, ins_const, ext_const, "ar.ccv", {{ 0, 0}}, 0, "ar.ccv" },
{ CST, ins_const, ext_const, "ar.pfs", {{ 0, 0}}, 0, "ar.pfs" },
{ CST, ins_const, ext_const, "1", {{ 0, 0}}, 0, "1" },
{ CST, ins_const, ext_const, "8", {{ 0, 0}}, 0, "8" },
{ CST, ins_const, ext_const, "16", {{ 0, 0}}, 0, "16" },
{ CST, ins_const, ext_const, "r0", {{ 0, 0}}, 0, "r0" },
{ CST, ins_const, ext_const, "ip", {{ 0, 0}}, 0, "ip" },
{ CST, ins_const, ext_const, "pr", {{ 0, 0}}, 0, "pr" },
{ CST, ins_const, ext_const, "pr.rot", {{ 0, 0}}, 0, "pr.rot" },
{ CST, ins_const, ext_const, "psr", {{ 0, 0}}, 0, "psr" },
{ CST, ins_const, ext_const, "psr.l", {{ 0, 0}}, 0, "psr.l" },
{ CST, ins_const, ext_const, "psr.um", {{ 0, 0}}, 0, "psr.um" },
/* register operands: */
{ REG, ins_reg, ext_reg, "ar", {{ 7, 20}}, 0, /* AR3 */
"an application register" },
{ REG, ins_reg, ext_reg, "b", {{ 3, 6}}, 0, /* B1 */
"a branch register" },
{ REG, ins_reg, ext_reg, "b", {{ 3, 13}}, 0, /* B2 */
"a branch register"},
{ REG, ins_reg, ext_reg, "cr", {{ 7, 20}}, 0, /* CR */
"a control register"},
{ REG, ins_reg, ext_reg, "f", {{ 7, 6}}, 0, /* F1 */
"a floating-point register" },
{ REG, ins_reg, ext_reg, "f", {{ 7, 13}}, 0, /* F2 */
"a floating-point register" },
{ REG, ins_reg, ext_reg, "f", {{ 7, 20}}, 0, /* F3 */
"a floating-point register" },
{ REG, ins_reg, ext_reg, "f", {{ 7, 27}}, 0, /* F4 */
"a floating-point register" },
{ REG, ins_reg, ext_reg, "p", {{ 6, 6}}, 0, /* P1 */
"a predicate register" },
{ REG, ins_reg, ext_reg, "p", {{ 6, 27}}, 0, /* P2 */
"a predicate register" },
{ REG, ins_reg, ext_reg, "r", {{ 7, 6}}, 0, /* R1 */
"a general register" },
{ REG, ins_reg, ext_reg, "r", {{ 7, 13}}, 0, /* R2 */
"a general register" },
{ REG, ins_reg, ext_reg, "r", {{ 7, 20}}, 0, /* R3 */
"a general register" },
{ REG, ins_reg, ext_reg, "r", {{ 2, 20}}, 0, /* R3_2 */
"a general register r0-r3" },
/* indirect operands: */
{ IND, ins_reg, ext_reg, "cpuid", {{7, 20}}, 0, /* CPUID_R3 */
"a cpuid register" },
{ IND, ins_reg, ext_reg, "dbr", {{7, 20}}, 0, /* DBR_R3 */
"a dbr register" },
{ IND, ins_reg, ext_reg, "dtr", {{7, 20}}, 0, /* DTR_R3 */
"a dtr register" },
{ IND, ins_reg, ext_reg, "itr", {{7, 20}}, 0, /* ITR_R3 */
"an itr register" },
{ IND, ins_reg, ext_reg, "ibr", {{7, 20}}, 0, /* IBR_R3 */
"an ibr register" },
{ IND, ins_reg, ext_reg, "", {{7, 20}}, 0, /* MR3 */
"an indirect memory address" },
{ IND, ins_reg, ext_reg, "msr", {{7, 20}}, 0, /* MSR_R3 */
"an msr register" },
{ IND, ins_reg, ext_reg, "pkr", {{7, 20}}, 0, /* PKR_R3 */
"a pkr register" },
{ IND, ins_reg, ext_reg, "pmc", {{7, 20}}, 0, /* PMC_R3 */
"a pmc register" },
{ IND, ins_reg, ext_reg, "pmd", {{7, 20}}, 0, /* PMD_R3 */
"a pmd register" },
{ IND, ins_reg, ext_reg, "rr", {{7, 20}}, 0, /* RR_R3 */
"an rr register" },
/* immediate operands: */
{ ABS, ins_cimmu, ext_cimmu, 0, {{ 5, 20 }}, UDEC, /* CCNT5 */
"a 5-bit count (0-31)" },
{ ABS, ins_cnt, ext_cnt, 0, {{ 2, 27 }}, UDEC, /* CNT2a */
"a 2-bit count (1-4)" },
{ ABS, ins_cnt2b, ext_cnt2b, 0, {{ 2, 27 }}, UDEC, /* CNT2b */
"a 2-bit count (1-3)" },
{ ABS, ins_cnt2c, ext_cnt2c, 0, {{ 2, 30 }}, UDEC, /* CNT2c */
"a count (0, 7, 15, or 16)" },
{ ABS, ins_immu, ext_immu, 0, {{ 5, 14}}, UDEC, /* CNT5 */
"a 5-bit count (0-31)" },
{ ABS, ins_immu, ext_immu, 0, {{ 6, 27}}, UDEC, /* CNT6 */
"a 6-bit count (0-63)" },
{ ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 20}}, UDEC, /* CPOS6a */
"a 6-bit bit pos (0-63)" },
{ ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 14}}, UDEC, /* CPOS6b */
"a 6-bit bit pos (0-63)" },
{ ABS, ins_cimmu, ext_cimmu, 0, {{ 6, 31}}, UDEC, /* CPOS6c */
"a 6-bit bit pos (0-63)" },
{ ABS, ins_imms, ext_imms, 0, {{ 1, 36}}, SDEC, /* IMM1 */
"a 1-bit integer (-1, 0)" },
{ ABS, ins_immu, ext_immu, 0, {{ 2, 13}}, UDEC, /* IMMU2 */
"a 2-bit unsigned (0-3)" },
{ ABS, ins_immu, ext_immu, 0, {{ 7, 13}}, 0, /* IMMU7a */
"a 7-bit unsigned (0-127)" },
{ ABS, ins_immu, ext_immu, 0, {{ 7, 20}}, 0, /* IMMU7b */
"a 7-bit unsigned (0-127)" },
{ ABS, ins_immu, ext_immu, 0, {{ 7, 13}}, UDEC, /* SOF */
"a frame size (register count)" },
{ ABS, ins_immu, ext_immu, 0, {{ 7, 20}}, UDEC, /* SOL */
"a local register count" },
{ ABS, ins_immus8,ext_immus8,0, {{ 4, 27}}, UDEC, /* SOR */
"a rotating register count (integer multiple of 8)" },
{ ABS, ins_imms, ext_imms, 0, /* IMM8 */
{{ 7, 13}, { 1, 36}}, SDEC,
"an 8-bit integer (-128-127)" },
{ ABS, ins_immsu4, ext_imms, 0, /* IMM8U4 */
{{ 7, 13}, { 1, 36}}, SDEC,
"an 8-bit signed integer for 32-bit unsigned compare (-128-127)" },
{ ABS, ins_immsm1, ext_immsm1, 0, /* IMM8M1 */
{{ 7, 13}, { 1, 36}}, SDEC,
"an 8-bit integer (-127-128)" },
{ ABS, ins_immsm1u4, ext_immsm1, 0, /* IMM8M1U4 */
{{ 7, 13}, { 1, 36}}, SDEC,
"an 8-bit integer for 32-bit unsigned compare (-127-(-1),1-128,0x100000000)" },
{ ABS, ins_immsm1, ext_immsm1, 0, /* IMM8M1U8 */
{{ 7, 13}, { 1, 36}}, SDEC,
"an 8-bit integer for 64-bit unsigned compare (-127-(-1),1-128,0x10000000000000000)" },
{ ABS, ins_immu, ext_immu, 0, {{ 2, 33}, { 7, 20}}, 0, /* IMMU9 */
"a 9-bit unsigned (0-511)" },
{ ABS, ins_imms, ext_imms, 0, /* IMM9a */
{{ 7, 6}, { 1, 27}, { 1, 36}}, SDEC,
"a 9-bit integer (-256-255)" },
{ ABS, ins_imms, ext_imms, 0, /* IMM9b */
{{ 7, 13}, { 1, 27}, { 1, 36}}, SDEC,
"a 9-bit integer (-256-255)" },
{ ABS, ins_imms, ext_imms, 0, /* IMM14 */
{{ 7, 13}, { 6, 27}, { 1, 36}}, SDEC,
"a 14-bit integer (-8192-8191)" },
{ ABS, ins_imms1, ext_imms1, 0, /* IMM17 */
{{ 7, 6}, { 8, 24}, { 1, 36}}, 0,
"a 17-bit integer (-65536-65535)" },
{ ABS, ins_immu, ext_immu, 0, {{20, 6}, { 1, 36}}, 0, /* IMMU21 */
"a 21-bit unsigned" },
{ ABS, ins_imms, ext_imms, 0, /* IMM22 */
{{ 7, 13}, { 9, 27}, { 5, 22}, { 1, 36}}, SDEC,
"a 22-bit signed integer" },
{ ABS, ins_immu, ext_immu, 0, /* IMMU24 */
{{21, 6}, { 2, 31}, { 1, 36}}, 0,
"a 24-bit unsigned" },
{ ABS, ins_imms16,ext_imms16,0, {{27, 6}, { 1, 36}}, 0, /* IMM44 */
"a 44-bit unsigned (least 16 bits ignored/zeroes)" },
{ ABS, ins_rsvd, ext_rsvd, 0, {{0, 0}}, 0, /* IMMU62 */
"a 62-bit unsigned" },
{ ABS, ins_rsvd, ext_rsvd, 0, {{0, 0}}, 0, /* IMMU64 */
"a 64-bit unsigned" },
{ ABS, ins_inc3, ext_inc3, 0, {{ 3, 13}}, SDEC, /* INC3 */
"an increment (+/- 1, 4, 8, or 16)" },
{ ABS, ins_cnt, ext_cnt, 0, {{ 4, 27}}, UDEC, /* LEN4 */
"a 4-bit length (1-16)" },
{ ABS, ins_cnt, ext_cnt, 0, {{ 6, 27}}, UDEC, /* LEN6 */
"a 6-bit length (1-64)" },
{ ABS, ins_immu, ext_immu, 0, {{ 4, 20}}, 0, /* MBTYPE4 */
"a mix type (@rev, @mix, @shuf, @alt, or @brcst)" },
{ ABS, ins_immu, ext_immu, 0, {{ 8, 20}}, 0, /* MBTYPE8 */
"an 8-bit mix type" },
{ ABS, ins_immu, ext_immu, 0, {{ 6, 14}}, UDEC, /* POS6 */
"a 6-bit bit pos (0-63)" },
{ REL, ins_imms4, ext_imms4, 0, {{ 7, 6}, { 2, 33}}, 0, /* TAG13 */
"a branch tag" },
{ REL, ins_imms4, ext_imms4, 0, {{ 9, 24}}, 0, /* TAG13b */
"a branch tag" },
{ REL, ins_imms4, ext_imms4, 0, {{20, 6}, { 1, 36}}, 0, /* TGT25 */
"a branch target" },
{ REL, ins_imms4, ext_imms4, 0, /* TGT25b */
{{ 7, 6}, {13, 20}, { 1, 36}}, 0,
"a branch target" },
{ REL, ins_imms4, ext_imms4, 0, {{20, 13}, { 1, 36}}, 0, /* TGT25c */
"a branch target" },
{ REL, ins_rsvd, ext_rsvd, 0, {{0, 0}}, 0, /* TGT64 */
"a branch target" },
{ ABS, ins_const, ext_const, 0, {{0, 0}}, 0, /* LDXMOV */
"ldxmov target" },
};
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