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-rw-r--r--opcodes/arc-dis.c266
1 files changed, 116 insertions, 150 deletions
diff --git a/opcodes/arc-dis.c b/opcodes/arc-dis.c
index f614cc3..fe835ae 100644
--- a/opcodes/arc-dis.c
+++ b/opcodes/arc-dis.c
@@ -1,5 +1,5 @@
/* Instruction printing code for the ARC.
- Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002
+ Copyright 1994, 1995, 1997, 1998, 2000, 2001, 2002, 2005
Free Software Foundation, Inc.
Contributed by Doug Evans (dje@cygnus.com).
@@ -15,7 +15,8 @@
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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, USA. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
#include "ansidecl.h"
#include "libiberty.h"
@@ -34,11 +35,11 @@
#define dbg (0)
#endif
-
/* Classification of the opcodes for the decoder to print
the instructions. */
-typedef enum {
+typedef enum
+{
CLASS_A4_ARITH,
CLASS_A4_OP3_GENERAL,
CLASS_A4_FLAG,
@@ -56,7 +57,6 @@ typedef enum {
CLASS_A4_LR
} a4_decoding_class;
-
#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))
@@ -64,7 +64,6 @@ typedef enum {
#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))
@@ -146,15 +145,15 @@ typedef enum {
} \
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 : \
@@ -169,25 +168,8 @@ typedef enum {
static char comment_prefix[] = "\t; ";
-static const char *core_reg_name PARAMS ((struct arcDisState *, int));
-static const char *aux_reg_name PARAMS ((struct arcDisState *, int));
-static const char *cond_code_name PARAMS ((struct arcDisState *, int));
-static const char *instruction_name
- PARAMS ((struct arcDisState *, int, int, int *));
-static void mwerror PARAMS ((struct arcDisState *, const char *));
-static const char *post_address PARAMS ((struct arcDisState *, int));
-static void write_comments_
- PARAMS ((struct arcDisState *, int, int, long int));
-static void write_instr_name_
- PARAMS ((struct arcDisState *, const char *, int, int, int, int, int, int));
-static int dsmOneArcInst PARAMS ((bfd_vma, struct arcDisState *));
-static const char *_coreRegName PARAMS ((void *, int));
-static int decodeInstr PARAMS ((bfd_vma, disassemble_info *));
-
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);
@@ -195,9 +177,7 @@ core_reg_name (state, 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);
@@ -205,9 +185,7 @@ aux_reg_name (state, 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);
@@ -215,11 +193,10 @@ cond_code_name (state, 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);
@@ -227,18 +204,14 @@ instruction_name (state, 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;
@@ -257,22 +230,16 @@ post_address (state, addr)
return "";
}
-static void my_sprintf PARAMS ((struct arcDisState *, char *, const char *,
- ...));
-
static void
-my_sprintf VPARAMS ((struct arcDisState *state, char *buf, const char *format,
- ...))
+arc_sprintf (struct arcDisState *state, char *buf, const char *format, ...)
{
char *bp;
const char *p;
int size, leading_zero, regMap[2];
long auxNum;
+ va_list ap;
- VA_OPEN (ap, format);
- VA_FIXEDARG (ap, struct arcDisState *, state);
- VA_FIXEDARG (ap, char *, buf);
- VA_FIXEDARG (ap, const char *, format);
+ va_start (ap, format);
bp = buf;
*bp = 0;
@@ -413,7 +380,7 @@ my_sprintf VPARAMS ((struct arcDisState *state, char *buf, const char *format,
if (ext)
sprintf (bp, "%s", ext);
else
- my_sprintf (state, bp, "%h", val);
+ arc_sprintf (state, bp, "%h", val);
}
break;
}
@@ -435,15 +402,14 @@ my_sprintf VPARAMS ((struct arcDisState *state, char *buf, const char *format,
}
DOCOMM: *bp = 0;
- VA_CLOSE (ap);
+ va_end (ap);
}
static void
-write_comments_(state, shimm, is_limm, limm_value)
- struct arcDisState * state;
- int shimm;
- int is_limm;
- long limm_value;
+write_comments_(struct arcDisState * state,
+ int shimm,
+ int is_limm,
+ long limm_value)
{
if (state->commentBuffer != 0)
{
@@ -468,25 +434,25 @@ write_comments_(state, shimm, is_limm, limm_value)
}
}
-#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" ,
"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;
+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);
@@ -540,7 +506,8 @@ write_instr_name_(state, instrName, cond, condCodeIsPartOfName, flag, signExtend
} \
while (0)
-enum {
+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,
@@ -550,9 +517,7 @@ enum {
extern disassemble_info tm_print_insn_info;
static int
-dsmOneArcInst (addr, state)
- bfd_vma addr;
- struct arcDisState * state;
+dsmOneArcInst (bfd_vma addr, struct arcDisState * state)
{
int condCodeIsPartOfName = 0;
a4_decoding_class decodingClass;
@@ -641,7 +606,7 @@ dsmOneArcInst (addr, state)
}
else
{
- switch (BITS (state->words[0],10,11))
+ switch (BITS (state->words[0], 10, 11))
{
case 0:
instrName = "ld";
@@ -665,14 +630,14 @@ dsmOneArcInst (addr, state)
break;
case op_ST:
- if (BIT (state->words[0],25))
+ if (BIT (state->words[0], 25))
{
instrName = "sr";
decodingClass = CLASS_A4_SR;
}
else
{
- switch (BITS (state->words[0],22,23))
+ switch (BITS (state->words[0], 22, 23))
{
case 0:
instrName = "st";
@@ -727,7 +692,7 @@ dsmOneArcInst (addr, state)
case 0x3f:
{
decodingClass = CLASS_A4_OP3_SUBOPC3F;
- switch( FIELDD (state->words[0]) )
+ switch (FIELDD (state->words[0]))
{
case 0:
instrName = "brk";
@@ -822,7 +787,7 @@ dsmOneArcInst (addr, state)
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 = CLASS_A4_OP3_SUBOPC3F;
}
@@ -866,7 +831,7 @@ dsmOneArcInst (addr, state)
if (!repeatsOp)
WRITE_FORMAT_COMMA_x (C);
WRITE_NOP_COMMENT ();
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldA, fieldB, fieldC);
}
else
@@ -874,7 +839,7 @@ dsmOneArcInst (addr, state)
WRITE_FORMAT_x (B);
if (!repeatsOp)
WRITE_FORMAT_COMMA_x (C);
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldB, fieldC);
}
write_comments ();
@@ -891,13 +856,13 @@ dsmOneArcInst (addr, state)
WRITE_FORMAT_x (A);
WRITE_FORMAT_COMMA_x (B);
WRITE_NOP_COMMENT ();
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldA, fieldB);
}
else
{
WRITE_FORMAT_x (B);
- my_sprintf (state, state->operandBuffer, formatString, fieldB);
+ arc_sprintf (state, state->operandBuffer, formatString, fieldB);
}
write_comments ();
break;
@@ -905,17 +870,17 @@ dsmOneArcInst (addr, state)
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 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;
@@ -932,8 +897,8 @@ dsmOneArcInst (addr, state)
lr dest<- func addr; j [dest]" */
}
- strcat (formatString, "%s"); /* address/label name */
- my_sprintf (state, state->operandBuffer, formatString,
+ strcat (formatString, "%s"); /* Address/label name. */
+ arc_sprintf (state, state->operandBuffer, formatString,
post_address (state, fieldA));
write_comments ();
break;
@@ -949,12 +914,12 @@ dsmOneArcInst (addr, state)
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;
}
@@ -962,24 +927,24 @@ dsmOneArcInst (addr, state)
{
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 */
+ 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;
@@ -1005,9 +970,9 @@ dsmOneArcInst (addr, state)
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);
@@ -1017,7 +982,7 @@ dsmOneArcInst (addr, state)
fieldB = fieldC;
WRITE_FORMAT_x_RB (C);
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldA, fieldB, fieldC);
write_comments ();
break;
@@ -1036,7 +1001,7 @@ dsmOneArcInst (addr, state)
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;
@@ -1063,7 +1028,7 @@ dsmOneArcInst (addr, state)
else
WRITE_FORMAT_RB ();
}
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldA, fieldB, fieldC);
write_comments ();
break;
@@ -1081,26 +1046,26 @@ dsmOneArcInst (addr, state)
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
state->_offset += fieldB, state->_ea_present = 0;
- directMem = BIT(state->words[0],26);
- addrWriteBack = BIT(state->words[0],24);
+ directMem = BIT (state->words[0], 26);
+ addrWriteBack = BIT (state->words[0], 24);
- write_instr_name();
+ write_instr_name ();
WRITE_FORMAT_x_COMMA_LB(C);
if (!fieldBisReg)
{
fieldB = state->_offset;
- WRITE_FORMAT_x_RB(B);
+ WRITE_FORMAT_x_RB (B);
}
else
{
- WRITE_FORMAT_x(B);
+ WRITE_FORMAT_x (B);
if (fieldBisReg && fieldA != 0)
{
fieldAisReg = 0;
@@ -1109,9 +1074,9 @@ dsmOneArcInst (addr, state)
else
WRITE_FORMAT_RB();
}
- my_sprintf (state, state->operandBuffer, formatString,
+ arc_sprintf (state, state->operandBuffer, formatString,
fieldC, fieldB, fieldA);
- write_comments2(fieldA);
+ write_comments2 (fieldA);
break;
case CLASS_A4_SR:
@@ -1119,37 +1084,36 @@ dsmOneArcInst (addr, state)
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 CLASS_A4_OP3_SUBOPC3F:
- write_instr_name();
+ write_instr_name ();
state->operandBuffer[0] = '\0';
break;
case CLASS_A4_LR:
/* LR instruction */
- CHECK_FIELD_A();
- CHECK_FIELD_B();
+ CHECK_FIELD_A ();
+ CHECK_FIELD_B ();
- write_instr_name();
- WRITE_FORMAT_x_COMMA_LB(A);
+ 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();
+ 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;
@@ -1161,23 +1125,23 @@ dsmOneArcInst (addr, state)
/* 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);
}
-
/* Returns the name the user specified condition code name. */
+
static const char *
_condCodeName(void *_this ATTRIBUTE_UNUSED, int regval)
{
@@ -1185,6 +1149,7 @@ _condCodeName(void *_this ATTRIBUTE_UNUSED, int regval)
}
/* Returns the name the user specified extension instruction. */
+
static const char *
_instName (void *_this ATTRIBUTE_UNUSED, int majop, int minop, int *flags)
{
@@ -1193,15 +1158,15 @@ _instName (void *_this ATTRIBUTE_UNUSED, int majop, int minop, int *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 */
+ struct arcDisState s; /* ARC Disassembler state. */
+ void *stream = info->stream; /* Output stream. */
fprintf_ftype func = info->fprintf_func;
int bytes;
@@ -1218,9 +1183,9 @@ decodeInstr (address, info)
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);
@@ -1233,23 +1198,24 @@ decodeInstr (address, info)
s.condCodeName = _condCodeName;
s.instName = _instName;
- /* disassemble */
- bytes = dsmOneArcInst(address, (void *)&s);
+ /* Disassemble. */
+ bytes = dsmOneArcInst (address, (void *)& s);
- /* display the disassembly instruction */
+ /* Display the disassembly instruction. */
(*func) (stream, "%08x ", 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;
}