/* Instruction printing code for the ARC.
- Copyright 1994, 1995, 1997, 1998, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005, 2007, 2009,
+ 2010, 2012 Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
- This program is free software; you can redistribute it and/or modify
+ This file is part of libopcodes.
+
+ This library 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.
+ the Free Software Foundation; either version 3, 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.
+ It 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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-#include <ansidecl.h>
-#include <libiberty.h>
+#include "ansidecl.h"
+#include "libiberty.h"
#include "dis-asm.h"
#include "opcode/arc.h"
#include "elf-bfd.h"
#include <string.h>
#include "opintl.h"
-#include <ctype.h>
#include <stdarg.h>
#include "arc-dis.h"
#include "arc-ext.h"
#define dbg (0)
#endif
-#define BIT(word,n) ((word) & (1 << n))
-#define BITS(word,s,e) (((word) << (31 - e)) >> (s + (31 - e)))
-#define OPCODE(word) (BITS ((word), 27, 31))
-#define FIELDA(word) (BITS ((word), 21, 26))
-#define FIELDB(word) (BITS ((word), 15, 20))
-#define FIELDC(word) (BITS ((word), 9, 14))
-
-/* FIELD D is signed in all of its uses, so we make sure argument is
- treated as signed for bit shifting purposes: */
-#define FIELDD(word) (BITS (((signed int)word), 0, 8))
-
-#define PUT_NEXT_WORD_IN(a) \
- do \
- { \
- if (is_limm == 1 && !NEXT_WORD (1)) \
- mwerror (state, _("Illegal limm reference in last instruction!\n")); \
- a = state->words[1]; \
- } \
+/* Classification of the opcodes for the decoder to print
+ the instructions. */
+
+typedef enum
+{
+ CLASS_A4_ARITH,
+ CLASS_A4_OP3_GENERAL,
+ CLASS_A4_FLAG,
+ /* All branches other than JC. */
+ CLASS_A4_BRANCH,
+ CLASS_A4_JC ,
+ /* All loads other than immediate
+ indexed loads. */
+ CLASS_A4_LD0,
+ CLASS_A4_LD1,
+ CLASS_A4_ST,
+ CLASS_A4_SR,
+ /* All single operand instructions. */
+ CLASS_A4_OP3_SUBOPC3F,
+ CLASS_A4_LR
+} a4_decoding_class;
+
+#define BIT(word,n) ((word) & (1 << n))
+#define BITS(word,s,e) (((word) >> s) & ((1 << (e + 1 - s)) - 1))
+#define OPCODE(word) (BITS ((word), 27, 31))
+#define FIELDA(word) (BITS ((word), 21, 26))
+#define FIELDB(word) (BITS ((word), 15, 20))
+#define FIELDC(word) (BITS ((word), 9, 14))
+
+/* FIELD D is signed. */
+#define FIELDD(word) ((BITS ((word), 0, 8) ^ 0x100) - 0x100)
+
+#define PUT_NEXT_WORD_IN(a) \
+ do \
+ { \
+ if (is_limm == 1 && !NEXT_WORD (1)) \
+ mwerror (state, _("Illegal limm reference in last instruction!\n")); \
+ a = state->words[1]; \
+ } \
while (0)
#define CHECK_FLAG_COND_NULLIFY() \
#define CHECK_FIELD_A() \
do \
{ \
- fieldA = FIELDA(state->words[0]); \
+ fieldA = FIELDA (state->words[0]); \
if (fieldA > 60) \
{ \
fieldAisReg = 0; \
} \
while (0)
-#define IS_SMALL(x) (((field##x) < 256) && ((field##x) > -257))
-#define IS_REG(x) (field##x##isReg)
-#define WRITE_FORMAT_LB_Rx_RB(x) WRITE_FORMAT(x,"[","]","","")
-#define WRITE_FORMAT_x_COMMA_LB(x) WRITE_FORMAT(x,"",",[","",",[")
-#define WRITE_FORMAT_COMMA_x_RB(x) WRITE_FORMAT(x,",","]",",","]")
-#define WRITE_FORMAT_x_RB(x) WRITE_FORMAT(x,"","]","","]")
-#define WRITE_FORMAT_COMMA_x(x) WRITE_FORMAT(x,",","",",","")
-#define WRITE_FORMAT_x_COMMA(x) WRITE_FORMAT(x,"",",","",",")
-#define WRITE_FORMAT_x(x) WRITE_FORMAT(x,"","","","")
+#define IS_SMALL(x) (((field##x) < 256) && ((field##x) > -257))
+#define IS_REG(x) (field##x##isReg)
+#define WRITE_FORMAT_LB_Rx_RB(x) WRITE_FORMAT (x, "[","]","","")
+#define WRITE_FORMAT_x_COMMA_LB(x) WRITE_FORMAT (x, "",",[","",",[")
+#define WRITE_FORMAT_COMMA_x_RB(x) WRITE_FORMAT (x, ",","]",",","]")
+#define WRITE_FORMAT_x_RB(x) WRITE_FORMAT (x, "","]","","]")
+#define WRITE_FORMAT_COMMA_x(x) WRITE_FORMAT (x, ",","",",","")
+#define WRITE_FORMAT_x_COMMA(x) WRITE_FORMAT (x, "",",","",",")
+#define WRITE_FORMAT_x(x) WRITE_FORMAT (x, "","","","")
#define WRITE_FORMAT(x,cb1,ca1,cb,ca) strcat (formatString, \
(IS_REG (x) ? cb1"%r"ca1 : \
usesAuxReg ? cb"%a"ca : \
IS_SMALL (x) ? cb"%d"ca : cb"%h"ca))
-#define WRITE_FORMAT_RB() strcat (formatString, "]")
+#define WRITE_FORMAT_RB() strcat (formatString, "]")
#define WRITE_COMMENT(str) (state->comm[state->commNum++] = (str))
-#define WRITE_NOP_COMMENT() if (!fieldAisReg && !flag) WRITE_COMMENT ("nop");
+#define WRITE_NOP_COMMENT() if (!fieldAisReg && !flag) WRITE_COMMENT ("nop");
-#define NEXT_WORD(x) (offset += 4, state->words[x])
+#define NEXT_WORD(x) (offset += 4, state->words[x])
-#define add_target(x) (state->targets[state->tcnt++] = (x))
+#define add_target(x) (state->targets[state->tcnt++] = (x))
static char comment_prefix[] = "\t; ";
static const char *
-core_reg_name (state, val)
- struct arcDisState * state;
- int val;
+core_reg_name (struct arcDisState * state, int val)
{
if (state->coreRegName)
return (*state->coreRegName)(state->_this, val);
}
static const char *
-aux_reg_name (state, val)
- struct arcDisState * state;
- int val;
+aux_reg_name (struct arcDisState * state, int val)
{
if (state->auxRegName)
return (*state->auxRegName)(state->_this, val);
}
static const char *
-cond_code_name (state, val)
- struct arcDisState * state;
- int val;
+cond_code_name (struct arcDisState * state, int val)
{
if (state->condCodeName)
return (*state->condCodeName)(state->_this, val);
}
static const char *
-instruction_name (state, op1, op2, flags)
- struct arcDisState * state;
- int op1;
- int op2;
- int * flags;
+instruction_name (struct arcDisState * state,
+ int op1,
+ int op2,
+ int * flags)
{
if (state->instName)
return (*state->instName)(state->_this, op1, op2, flags);
}
static void
-mwerror (state, msg)
- struct arcDisState * state;
- const char * msg;
+mwerror (struct arcDisState * state, const char * msg)
{
if (state->err != 0)
(*state->err)(state->_this, (msg));
}
static const char *
-post_address (state, addr)
- struct arcDisState * state;
- int addr;
+post_address (struct arcDisState * state, int addr)
{
static char id[3 * ARRAY_SIZE (state->addresses)];
int j, i = state->acnt;
id[j+0] = '@';
id[j+1] = '0'+i;
id[j+2] = 0;
-
+
return id + j;
}
return "";
}
-static void
-my_sprintf (
- struct arcDisState * state,
- char * buf,
- const char * format,
- ...)
+static void
+arc_sprintf (struct arcDisState *state, char *buf, const char *format, ...)
{
- char *bp;
+ char *bp;
const char *p;
int size, leading_zero, regMap[2];
- long auxNum;
va_list ap;
-
+
va_start (ap, format);
-
- bp = buf;
+
+ bp = buf;
*bp = 0;
p = format;
- auxNum = -1;
regMap[0] = 0;
regMap[1] = 0;
-
- while (1)
+
+ while (1)
switch (*p++)
{
- case 0:
- goto DOCOMM; /* (return) */
- default:
- *bp++ = p[-1];
+ case 0:
+ goto DOCOMM; /* (return) */
+ default:
+ *bp++ = p[-1];
break;
case '%':
size = 0;
leading_zero = 0;
RETRY: ;
- switch (*p++)
+ switch (*p++)
{
case '0':
case '1':
}
#define inc_bp() bp = bp + strlen (bp)
- case 'h':
+ case 'h':
{
unsigned u = va_arg (ap, int);
/* Hex. We can change the format to 0x%08x in
one place, here, if we wish.
We add underscores for easy reading. */
- if (u > 65536)
+ if (u > 65536)
sprintf (bp, "0x%x_%04x", u >> 16, u & 0xffff);
- else
+ else
sprintf (bp, "0x%x", u);
inc_bp ();
- }
+ }
break;
- case 'X': case 'x':
+ case 'X': case 'x':
{
int val = va_arg (ap, int);
- if (size != 0)
+ if (size != 0)
if (leading_zero)
sprintf (bp, "%0*x", size, val);
else
inc_bp ();
}
break;
- case 'd':
+ case 'd':
{
int val = va_arg (ap, int);
-
+
if (size != 0)
sprintf (bp, "%*d", size, val);
else
inc_bp ();
}
break;
- case 'r':
+ case 'r':
{
/* Register. */
int val = va_arg (ap, int);
-
+
#define REG2NAME(num, name) case num: sprintf (bp, ""name); \
regMap[(num < 32) ? 0 : 1] |= 1 << (num - ((num < 32) ? 0 : 32)); break;
-
- switch (val)
+
+ switch (val)
{
REG2NAME (26, "gp");
REG2NAME (27, "fp");
}
inc_bp ();
} break;
-
- case 'a':
+
+ case 'a':
{
/* Aux Register. */
int val = va_arg (ap, int);
#define AUXREG2NAME(num, name) case num: sprintf (bp,name); break;
- switch (val)
+ switch (val)
{
AUXREG2NAME (0x0, "status");
AUXREG2NAME (0x1, "semaphore");
if (ext)
sprintf (bp, "%s", ext);
else
- my_sprintf (state, bp, "%h", val);
+ arc_sprintf (state, bp, "%h", val);
}
break;
}
inc_bp ();
}
break;
-
- case 's':
+
+ case 's':
{
sprintf (bp, "%s", va_arg (ap, char *));
inc_bp ();
}
break;
-
+
default:
fprintf (stderr, "?? format %c\n", p[-1]);
break;
}
DOCOMM: *bp = 0;
+ va_end (ap);
}
-static void
-write_comments_(state, shimm, is_limm, limm_value)
- struct arcDisState * state;
- int shimm;
- int is_limm;
- long limm_value;
+static void
+write_comments_(struct arcDisState * state,
+ int shimm,
+ int is_limm,
+ long limm_value)
{
- if (state->commentBuffer != 0)
+ if (state->commentBuffer != 0)
{
int i;
- if (is_limm)
+ if (is_limm)
{
const char *name = post_address (state, limm_value + shimm);
if (*name != 0)
WRITE_COMMENT (name);
}
- for (i = 0; i < state->commNum; i++)
+ for (i = 0; i < state->commNum; i++)
{
if (i == 0)
strcpy (state->commentBuffer, comment_prefix);
else
- strcat (state->commentBuffer, ", ");
- strncat (state->commentBuffer, state->comm[i], sizeof (state->commentBuffer));
+ strcat (state->commentBuffer, ", ");
+ strncat (state->commentBuffer, state->comm[i],
+ sizeof (state->commentBuffer));
}
}
}
-#define write_comments2(x) write_comments_(state, x, is_limm, limm_value)
-#define write_comments() write_comments2(0)
+#define write_comments2(x) write_comments_ (state, x, is_limm, limm_value)
+#define write_comments() write_comments2 (0)
-static const char *condName[] = {
+static const char *condName[] =
+{
/* 0..15. */
- "" , "z" , "nz" , "p" , "n" , "c" , "nc" , "v" ,
+ "" , "z" , "nz" , "p" , "n" , "c" , "nc" , "v" ,
"nv" , "gt" , "ge" , "lt" , "le" , "hi" , "ls" , "pnz"
};
-static void
-write_instr_name_(state, instrName, cond, condCodeIsPartOfName, flag, signExtend, addrWriteBack, directMem)
- struct arcDisState * state;
- const char * instrName;
- int cond;
- int condCodeIsPartOfName;
- int flag;
- int signExtend;
- int addrWriteBack;
- int directMem;
+static void
+write_instr_name_(struct arcDisState * state,
+ const char * instrName,
+ int cond,
+ int condCodeIsPartOfName,
+ int flag,
+ int signExtend,
+ int addrWriteBack,
+ int directMem)
{
strcpy (state->instrBuffer, instrName);
- if (cond > 0)
+ if (cond > 0)
{
const char *cc = 0;
if (flag)
strcat (state->instrBuffer, ".f");
- switch (state->nullifyMode)
+ switch (state->nullifyMode)
{
case BR_exec_always:
strcat (state->instrBuffer, ".d");
} \
while (0)
-enum {
- op_LD0 = 0, op_LD1 = 1, op_ST = 2, op_3 = 3,
+enum
+{
+ op_LD0 = 0, op_LD1 = 1, op_ST = 2, op_3 = 3,
op_BC = 4, op_BLC = 5, op_LPC = 6, op_JC = 7,
- op_ADD = 8, op_ADC = 9, op_SUB = 10, op_SBC = 11,
+ op_ADD = 8, op_ADC = 9, op_SUB = 10, op_SBC = 11,
op_AND = 12, op_OR = 13, op_BIC = 14, op_XOR = 15
};
extern disassemble_info tm_print_insn_info;
-static int
-dsmOneArcInst (addr, state)
- bfd_vma addr;
- struct arcDisState * state;
+static int
+dsmOneArcInst (bfd_vma addr, struct arcDisState * state)
{
int condCodeIsPartOfName = 0;
- int decodingClass;
+ a4_decoding_class decodingClass;
const char * instrName;
int repeatsOp = 0;
int fieldAisReg = 1;
int flags;
int ignoreFirstOpd;
char formatString[60];
-
+
state->instructionLen = 4;
state->nullifyMode = BR_exec_when_no_jump;
state->opWidth = 12;
state->isBranch = 0;
-
+
state->_mem_load = 0;
state->_ea_present = 0;
state->_load_len = 0;
state->ea_reg1 = no_reg;
state->ea_reg2 = no_reg;
state->_offset = 0;
-
+
if (! NEXT_WORD (0))
return 0;
-
+
state->_opcode = OPCODE (state->words[0]);
instrName = 0;
- decodingClass = 0; /* default! */
+ decodingClass = CLASS_A4_ARITH; /* default! */
repeatsOp = 0;
condCodeIsPartOfName=0;
state->commNum = 0;
if (state->commentBuffer)
state->commentBuffer[0] = '\0';
- switch (state->_opcode)
+ switch (state->_opcode)
{
- case op_LD0:
- switch (BITS (state->words[0],1,2))
+ case op_LD0:
+ switch (BITS (state->words[0],1,2))
{
case 0:
instrName = "ld";
state->_load_len = 2;
break;
default:
- instrName = "??? (0[3])";
+ instrName = "??? (0[3])";
state->flow = invalid_instr;
break;
}
- decodingClass = 5;
+ decodingClass = CLASS_A4_LD0;
break;
-
- case op_LD1:
- if (BIT (state->words[0],13))
+
+ case op_LD1:
+ if (BIT (state->words[0],13))
{
- instrName = "lr";
- decodingClass = 10;
+ instrName = "lr";
+ decodingClass = CLASS_A4_LR;
}
- else
+ else
{
- switch (BITS (state->words[0],10,11))
+ switch (BITS (state->words[0], 10, 11))
{
case 0:
instrName = "ld";
state->_load_len = 2;
break;
default:
- instrName = "??? (1[3])";
+ instrName = "??? (1[3])";
state->flow = invalid_instr;
break;
}
- decodingClass = 6;
+ decodingClass = CLASS_A4_LD1;
}
break;
-
+
case op_ST:
- if (BIT (state->words[0],25))
+ if (BIT (state->words[0], 25))
{
instrName = "sr";
- decodingClass = 8;
+ decodingClass = CLASS_A4_SR;
}
- else
+ else
{
- switch (BITS (state->words[0],22,23))
+ switch (BITS (state->words[0], 22, 23))
{
case 0:
instrName = "st";
instrName = "stw";
break;
default:
- instrName = "??? (2[3])";
+ instrName = "??? (2[3])";
state->flow = invalid_instr;
break;
}
- decodingClass = 7;
+ decodingClass = CLASS_A4_ST;
}
break;
-
+
case op_3:
- decodingClass = 1; /* default for opcode 3... */
- switch (FIELDC (state->words[0]))
+ decodingClass = CLASS_A4_OP3_GENERAL; /* default for opcode 3... */
+ switch (FIELDC (state->words[0]))
{
case 0:
- instrName = "flag";
- decodingClass = 2;
+ instrName = "flag";
+ decodingClass = CLASS_A4_FLAG;
break;
case 1:
instrName = "asr";
case 8:
instrName = "extw";
break;
- case 0x3f:
+ case 0x3f:
{
- decodingClass = 9;
- switch( FIELDD (state->words[0]) )
+ decodingClass = CLASS_A4_OP3_SUBOPC3F;
+ switch (FIELDD (state->words[0]))
{
case 0:
instrName = "brk";
}
}
break;
-
+
/* ARC Extension Library Instructions
NOTE: We assume that extension codes are these instrs. */
default:
instrName = instruction_name (state,
state->_opcode,
FIELDC (state->words[0]),
- & flags);
+ &flags);
if (!instrName)
{
instrName = "???";
break;
case op_BC:
- instrName = "b";
+ instrName = "b";
case op_BLC:
if (!instrName)
- instrName = "bl";
+ instrName = "bl";
case op_LPC:
if (!instrName)
- instrName = "lp";
+ instrName = "lp";
case op_JC:
if (!instrName)
{
- if (BITS (state->words[0],9,9))
+ if (BITS (state->words[0],9,9))
{
- instrName = "jl";
+ instrName = "jl";
is_linked = 1;
}
- else
+ else
{
- instrName = "j";
+ instrName = "j";
is_linked = 0;
}
}
condCodeIsPartOfName = 1;
- decodingClass = ((state->_opcode == op_JC) ? 4 : 3);
+ decodingClass = ((state->_opcode == op_JC) ? CLASS_A4_JC : CLASS_A4_BRANCH );
state->isBranch = 1;
break;
-
+
case op_ADD:
case op_ADC:
case op_AND:
repeatsOp = (FIELDC (state->words[0]) == FIELDB (state->words[0]));
- decodingClass = 0;
- switch (state->_opcode)
+ switch (state->_opcode)
{
case op_ADD:
instrName = (repeatsOp ? "asl" : "add");
break;
}
break;
-
+
case op_SUB: instrName = "sub";
break;
case op_SBC: instrName = "sbc";
case op_XOR:
if (state->words[0] == 0x7fffffff)
{
- /* nop encoded as xor -1, -1, -1 */
+ /* NOP encoded as xor -1, -1, -1. */
instrName = "nop";
- decodingClass = 9;
+ decodingClass = CLASS_A4_OP3_SUBOPC3F;
}
- else
+ else
instrName = "xor";
break;
-
+
default:
instrName = instruction_name (state,state->_opcode,0,&flags);
/* if (instrName) printf("FLAGS=0x%x\n", flags); */
ignoreFirstOpd = 1;
break;
}
-
+
fieldAisReg = fieldBisReg = fieldCisReg = 1; /* Assume regs for now. */
flag = cond = is_shimm = is_limm = 0;
state->nullifyMode = BR_exec_when_no_jump; /* 0 */
signExtend = addrWriteBack = directMem = 0;
usesAuxReg = 0;
-
- switch (decodingClass)
+
+ switch (decodingClass)
{
- case 0:
+ case CLASS_A4_ARITH:
CHECK_FIELD_A ();
CHECK_FIELD_B ();
if (!repeatsOp)
CHECK_FIELD_C ();
CHECK_FLAG_COND_NULLIFY ();
-
+
write_instr_name ();
- if (!ignoreFirstOpd)
+ if (!ignoreFirstOpd)
{
WRITE_FORMAT_x (A);
WRITE_FORMAT_COMMA_x (B);
if (!repeatsOp)
WRITE_FORMAT_COMMA_x (C);
WRITE_NOP_COMMENT ();
- my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldA, fieldB, fieldC);
}
- else
+ else
{
WRITE_FORMAT_x (B);
if (!repeatsOp)
WRITE_FORMAT_COMMA_x (C);
- my_sprintf (state, state->operandBuffer, formatString, fieldB, fieldC);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldB, fieldC);
}
write_comments ();
break;
-
- case 1:
+
+ case CLASS_A4_OP3_GENERAL:
CHECK_FIELD_A ();
CHECK_FIELD_B ();
CHECK_FLAG_COND_NULLIFY ();
-
+
write_instr_name ();
- if (!ignoreFirstOpd)
+ if (!ignoreFirstOpd)
{
WRITE_FORMAT_x (A);
WRITE_FORMAT_COMMA_x (B);
WRITE_NOP_COMMENT ();
- my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldA, fieldB);
}
- else
+ else
{
WRITE_FORMAT_x (B);
- my_sprintf (state, state->operandBuffer, formatString, fieldB);
+ arc_sprintf (state, state->operandBuffer, formatString, fieldB);
}
write_comments ();
break;
-
- case 2:
+
+ case CLASS_A4_FLAG:
CHECK_FIELD_B ();
CHECK_FLAG_COND_NULLIFY ();
- flag = 0; /* this is the FLAG instruction -- it's redundant */
-
+ flag = 0; /* This is the FLAG instruction -- it's redundant. */
+
write_instr_name ();
WRITE_FORMAT_x (B);
- my_sprintf (state, state->operandBuffer, formatString, fieldB);
+ arc_sprintf (state, state->operandBuffer, formatString, fieldB);
write_comments ();
break;
-
- case 3:
+
+ case CLASS_A4_BRANCH:
fieldA = BITS (state->words[0],7,26) << 2;
- fieldA = (fieldA << 10) >> 10; /* make it signed */
+ fieldA = (fieldA << 10) >> 10; /* Make it signed. */
fieldA += addr + 4;
CHECK_FLAG_COND_NULLIFY ();
flag = 0;
-
+
write_instr_name ();
/* This address could be a label we know. Convert it. */
- if (state->_opcode != op_LPC /* LP */)
+ if (state->_opcode != op_LPC /* LP */)
{
- add_target (fieldA); /* For debugger. */
- state->flow = state->_opcode == op_BLC /* BL */
- ? direct_call
- : direct_jump;
- /* indirect calls are achieved by "lr blink,[status];
- lr dest<- func addr; j [dest]" */
- }
-
- strcat (formatString, "%s"); /* address/label name */
- my_sprintf (state, state->operandBuffer, formatString, post_address (state, fieldA));
+ add_target (fieldA); /* For debugger. */
+ state->flow = state->_opcode == op_BLC /* BL */
+ ? direct_call
+ : direct_jump;
+ /* indirect calls are achieved by "lr blink,[status];
+ lr dest<- func addr; j [dest]" */
+ }
+
+ strcat (formatString, "%s"); /* Address/label name. */
+ arc_sprintf (state, state->operandBuffer, formatString,
+ post_address (state, fieldA));
write_comments ();
break;
-
- case 4:
+
+ case CLASS_A4_JC:
/* For op_JC -- jump to address specified.
Also covers jump and link--bit 9 of the instr. word
selects whether linked, thus "is_linked" is set above. */
fieldA = 0;
CHECK_FIELD_B ();
CHECK_FLAG_COND_NULLIFY ();
-
- if (!fieldBisReg)
+
+ if (!fieldBisReg)
{
fieldAisReg = 0;
- fieldA = (fieldB >> 25) & 0x7F; /* flags */
+ fieldA = (fieldB >> 25) & 0x7F; /* Flags. */
fieldB = (fieldB & 0xFFFFFF) << 2;
state->flow = is_linked ? direct_call : direct_jump;
add_target (fieldB);
- /* screwy JLcc requires .jd mode to execute correctly
- * but we pretend it is .nd (no delay slot). */
+ /* Screwy JLcc requires .jd mode to execute correctly
+ but we pretend it is .nd (no delay slot). */
if (is_linked && state->nullifyMode == BR_exec_when_jump)
state->nullifyMode = BR_exec_when_no_jump;
}
- else
+ else
{
state->flow = is_linked ? indirect_call : indirect_jump;
/* We should also treat this as indirect call if NOT linked
- * but the preceding instruction was a "lr blink,[status]"
- * and we have a delay slot with "add blink,blink,2".
- * For now we can't detect such. */
+ but the preceding instruction was a "lr blink,[status]"
+ and we have a delay slot with "add blink,blink,2".
+ For now we can't detect such. */
state->register_for_indirect_jump = fieldB;
}
-
+
write_instr_name ();
- strcat (formatString,
- IS_REG (B) ? "[%r]" : "%s"); /* address/label name */
- if (fieldA != 0)
+ strcat (formatString,
+ IS_REG (B) ? "[%r]" : "%s"); /* Address/label name. */
+ if (fieldA != 0)
{
fieldAisReg = 0;
WRITE_FORMAT_COMMA_x (A);
}
if (IS_REG (B))
- my_sprintf (state, state->operandBuffer, formatString, fieldB, fieldA);
+ arc_sprintf (state, state->operandBuffer, formatString, fieldB, fieldA);
else
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
post_address (state, fieldB), fieldA);
write_comments ();
break;
-
- case 5:
+
+ case CLASS_A4_LD0:
/* LD instruction.
B and C can be regs, or one (both?) can be limm. */
CHECK_FIELD_A ();
else
state->_offset += fieldC;
state->_mem_load = 1;
-
- directMem = BIT (state->words[0],5);
- addrWriteBack = BIT (state->words[0],3);
- signExtend = BIT (state->words[0],0);
-
+
+ directMem = BIT (state->words[0], 5);
+ addrWriteBack = BIT (state->words[0], 3);
+ signExtend = BIT (state->words[0], 0);
+
write_instr_name ();
WRITE_FORMAT_x_COMMA_LB(A);
if (fieldBisReg || fieldB != 0)
WRITE_FORMAT_x_COMMA (B);
else
fieldB = fieldC;
-
+
WRITE_FORMAT_x_RB (C);
- my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldA, fieldB, fieldC);
write_comments ();
break;
-
- case 6:
+
+ case CLASS_A4_LD1:
/* LD instruction. */
CHECK_FIELD_B ();
CHECK_FIELD_A ();
fieldC = FIELDD (state->words[0]);
-
+
if (dbg)
printf ("6:b reg %d %d c 0x%x \n",
fieldBisReg, fieldB, fieldC);
state->_mem_load = 1;
if (fieldBisReg)
state->ea_reg1 = fieldB;
- /* field B is either a shimm (same as fieldC) or limm (different!)
+ /* Field B is either a shimm (same as fieldC) or limm (different!)
Say ea is not present, so only one of us will do the name lookup. */
else
state->_offset += fieldB, state->_ea_present = 0;
-
+
directMem = BIT (state->words[0],14);
addrWriteBack = BIT (state->words[0],12);
signExtend = BIT (state->words[0],9);
-
+
write_instr_name ();
WRITE_FORMAT_x_COMMA_LB (A);
- if (!fieldBisReg)
+ if (!fieldBisReg)
{
fieldB = state->_offset;
WRITE_FORMAT_x_RB (B);
}
- else
+ else
{
WRITE_FORMAT_x (B);
- if (fieldC != 0 && !BIT (state->words[0],13))
+ if (fieldC != 0 && !BIT (state->words[0],13))
{
fieldCisReg = 0;
WRITE_FORMAT_COMMA_x_RB (C);
else
WRITE_FORMAT_RB ();
}
- my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB, fieldC);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldA, fieldB, fieldC);
write_comments ();
break;
-
- case 7:
+
+ case CLASS_A4_ST:
/* ST instruction. */
CHECK_FIELD_B();
CHECK_FIELD_C();
fieldA = FIELDD(state->words[0]); /* shimm */
-
+
/* [B,A offset] */
if (dbg) printf("7:b reg %d %x off %x\n",
- fieldBisReg,fieldB,fieldA);
+ fieldBisReg,fieldB,fieldA);
state->_ea_present = 1;
state->_offset = fieldA;
if (fieldBisReg)
state->ea_reg1 = fieldB;
- /* field B is either a shimm (same as fieldA) or limm (different!)
+ /* Field B is either a shimm (same as fieldA) or limm (different!)
Say ea is not present, so only one of us will do the name lookup.
(for is_limm we do the name translation here). */
- else
+ else
state->_offset += fieldB, state->_ea_present = 0;
-
- directMem = BIT(state->words[0],26);
- addrWriteBack = BIT(state->words[0],24);
-
- write_instr_name();
+
+ directMem = BIT (state->words[0], 26);
+ addrWriteBack = BIT (state->words[0], 24);
+
+ write_instr_name ();
WRITE_FORMAT_x_COMMA_LB(C);
-
- if (!fieldBisReg)
+
+ if (!fieldBisReg)
{
fieldB = state->_offset;
- WRITE_FORMAT_x_RB(B);
+ WRITE_FORMAT_x_RB (B);
}
- else
+ else
{
- WRITE_FORMAT_x(B);
- if (fieldBisReg && fieldA != 0)
+ WRITE_FORMAT_x (B);
+ if (fieldBisReg && fieldA != 0)
{
fieldAisReg = 0;
WRITE_FORMAT_COMMA_x_RB(A);
else
WRITE_FORMAT_RB();
}
- my_sprintf (state, state->operandBuffer, formatString, fieldC, fieldB, fieldA);
- write_comments2(fieldA);
+ arc_sprintf (state, state->operandBuffer, formatString,
+ fieldC, fieldB, fieldA);
+ write_comments2 (fieldA);
break;
- case 8:
+
+ case CLASS_A4_SR:
/* SR instruction */
CHECK_FIELD_B();
CHECK_FIELD_C();
-
- write_instr_name();
+
+ write_instr_name ();
WRITE_FORMAT_x_COMMA_LB(C);
/* Try to print B as an aux reg if it is not a core reg. */
usesAuxReg = 1;
- WRITE_FORMAT_x(B);
- WRITE_FORMAT_RB();
- my_sprintf (state, state->operandBuffer, formatString, fieldC, fieldB);
- write_comments();
+ WRITE_FORMAT_x (B);
+ WRITE_FORMAT_RB ();
+ arc_sprintf (state, state->operandBuffer, formatString, fieldC, fieldB);
+ write_comments ();
break;
-
- case 9:
- write_instr_name();
+
+ case CLASS_A4_OP3_SUBOPC3F:
+ write_instr_name ();
state->operandBuffer[0] = '\0';
break;
-
- case 10:
+
+ case CLASS_A4_LR:
/* LR instruction */
- CHECK_FIELD_A();
- CHECK_FIELD_B();
-
- write_instr_name();
- WRITE_FORMAT_x_COMMA_LB(A);
+ CHECK_FIELD_A ();
+ CHECK_FIELD_B ();
+
+ write_instr_name ();
+ WRITE_FORMAT_x_COMMA_LB (A);
/* Try to print B as an aux reg if it is not a core reg. */
usesAuxReg = 1;
- WRITE_FORMAT_x(B);
- WRITE_FORMAT_RB();
- my_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB);
- write_comments();
- break;
-
- case 11:
- CHECK_COND();
- write_instr_name();
- state->operandBuffer[0] = '\0';
+ WRITE_FORMAT_x (B);
+ WRITE_FORMAT_RB ();
+ arc_sprintf (state, state->operandBuffer, formatString, fieldA, fieldB);
+ write_comments ();
break;
-
+
default:
mwerror (state, "Bad decoding class in ARC disassembler");
break;
}
-
+
state->_cond = cond;
return state->instructionLen = offset;
}
/* Returns the name the user specified core extension register. */
+
static const char *
-_coreRegName(arg, regval)
- void * arg ATTRIBUTE_UNUSED;
- int regval;
+_coreRegName(void * arg ATTRIBUTE_UNUSED, int regval)
{
return arcExtMap_coreRegName (regval);
}
/* Returns the name the user specified AUX extension register. */
+
static const char *
_auxRegName(void *_this ATTRIBUTE_UNUSED, int regval)
{
- return arcExtMap_auxRegName(regval);
+ return arcExtMap_auxRegName(regval);
}
-
/* Returns the name the user specified condition code name. */
+
static const char *
_condCodeName(void *_this ATTRIBUTE_UNUSED, int regval)
{
- return arcExtMap_condCodeName(regval);
+ return arcExtMap_condCodeName(regval);
}
/* Returns the name the user specified extension instruction. */
+
static const char *
_instName (void *_this ATTRIBUTE_UNUSED, int majop, int minop, int *flags)
{
- return arcExtMap_instName(majop, minop, flags);
+ return arcExtMap_instName(majop, minop, flags);
}
/* Decode an instruction returning the size of the instruction
in bytes or zero if unrecognized. */
+
static int
-decodeInstr (address, info)
- bfd_vma address; /* Address of this instruction. */
- disassemble_info * info;
+decodeInstr (bfd_vma address, /* Address of this instruction. */
+ disassemble_info * info)
{
int status;
bfd_byte buffer[4];
- struct arcDisState s; /* ARC Disassembler state */
- void *stream = info->stream; /* output stream */
- fprintf_ftype func = info->fprintf_func;
- int bytes;
-
+ struct arcDisState s; /* ARC Disassembler state. */
+ void *stream = info->stream; /* Output stream. */
+ fprintf_ftype func = info->fprintf_func;
+
memset (&s, 0, sizeof(struct arcDisState));
-
+
/* read first instruction */
status = (*info->read_memory_func) (address, buffer, 4, info);
if (status != 0)
s.words[0] = bfd_getl32(buffer);
else
s.words[0] = bfd_getb32(buffer);
- /* always read second word in case of limm */
+ /* Always read second word in case of limm. */
- /* we ignore the result since last insn may not have a limm */
+ /* We ignore the result since last insn may not have a limm. */
status = (*info->read_memory_func) (address + 4, buffer, 4, info);
if (info->endian == BFD_ENDIAN_LITTLE)
s.words[1] = bfd_getl32(buffer);
s.condCodeName = _condCodeName;
s.instName = _instName;
- /* disassemble */
- bytes = dsmOneArcInst(address, (void *)&s);
+ /* Disassemble. */
+ dsmOneArcInst (address, & s);
- /* display the disassembly instruction */
- (*func) (stream, "%08x ", s.words[0]);
+ /* Display the disassembly instruction. */
+ (*func) (stream, "%08lx ", s.words[0]);
(*func) (stream, " ");
-
(*func) (stream, "%-10s ", s.instrBuffer);
-
- if (__TRANSLATION_REQUIRED(s))
+
+ if (__TRANSLATION_REQUIRED (s))
{
bfd_vma addr = s.addresses[s.operandBuffer[1] - '0'];
+
(*info->print_address_func) ((bfd_vma) addr, info);
(*func) (stream, "\n");
}
else
(*func) (stream, "%s",s.operandBuffer);
+
return s.instructionLen;
}
arc_get_disassembler (void *ptr)
{
if (ptr)
- build_ARC_extmap (ptr);
+ build_ARC_extmap ((struct bfd *) ptr);
return decodeInstr;
}
projects / deliverable / binutils-gdb.git / blobdiff