+++ /dev/null
-/* disassemble sparc instructions for objdump
- Copyright (C) 1986, 1987, 1989, 1991 Free Software Foundation, Inc.
-
-
-This file is part of the binutils.
-
-The binutils are 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, or (at your option)
-any later version.
-
-The binutils are distributed in the hope that they 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 the binutils; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
-
-#include "bfd.h"
-#include "sysdep.h"
-#include <stdio.h>
-#include "opcode/sparc.h"
-#include "objdump.h"
-extern int print_address();
-
-static char *reg_names[] =
- { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
- "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
- "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
- "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
- "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
- "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
- "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
- "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
- "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
-
-#define freg_names (®_names[4 * 8])
-
-union sparc_insn
- {
- unsigned long int code;
- struct
- {
- unsigned int _OP:2;
-#define op ldst._OP
- unsigned int _RD:5;
-#define rd ldst._RD
- unsigned int op3:6;
- unsigned int _RS1:5;
-#define rs1 ldst._RS1
- unsigned int i:1;
- unsigned int _ASI:8;
-#define asi ldst._ASI
- unsigned int _RS2:5;
-#define rs2 ldst._RS2
-#define shcnt rs2
- } ldst;
- struct
- {
- unsigned int _OP:2, _RD:5, op3:6, _RS1:5, i:1;
- unsigned int IMM13:13;
-#define imm13 IMM13.IMM13
- } IMM13;
- struct
- {
- unsigned int _OP:2;
- unsigned int a:1;
- unsigned int cond:4;
- unsigned int op2:3;
- unsigned int DISP22:22;
-#define disp22 branch.DISP22
- } branch;
-#ifndef NO_V9
- struct
- {
- unsigned int _OP:2, _RD:5, op3:6, _RS1:5;
- unsigned int DISP14:14;
-#define disp14 DISP14.DISP14
- } DISP14;
- struct
- {
- unsigned int _OP:2;
- unsigned int a:1;
- unsigned int cond:4;
- unsigned int op2:3;
- unsigned int p:1;
- unsigned int DISP21:21;
-#define disp21 branch2.DISP21
- } branch2;
-#endif /* NO_V9 */
-
-#define imm22 disp22
- struct
- {
- unsigned int _OP:2;
- unsigned int _DISP30:30;
-#define disp30 call._DISP30
- } call;
- };
-
-/* Nonzero if INSN is the opcode for a delayed branch. */
-static int
-is_delayed_branch (insn)
- union sparc_insn insn;
-{
- unsigned int i;
-
- for (i = 0; i < NUMOPCODES; ++i)
- {
- const struct sparc_opcode *opcode = &sparc_opcodes[i];
- if ((opcode->match & insn.code) == opcode->match
- && (opcode->lose & insn.code) == 0
- && (opcode->flags&F_DELAYED))
- return 1;
- }
- return 0;
-}
-
-static int opcodes_sorted = 0;
-
-/* Print one instruction from MEMADDR on STREAM. */
-int
-print_insn_sparc (memaddr, buffer, stream)
- bfd_vma memaddr;
- bfd_byte *buffer;
- FILE *stream;
-
-{
- union sparc_insn insn;
-
- register unsigned int i;
-
- if (!opcodes_sorted)
- {
- static int compare_opcodes ();
- qsort ((char *) sparc_opcodes, NUMOPCODES,
- sizeof (sparc_opcodes[0]), compare_opcodes);
- opcodes_sorted = 1;
- }
-
-memcpy(&insn,buffer, sizeof (insn));
-
- for (i = 0; i < NUMOPCODES; ++i)
- {
- const struct sparc_opcode *opcode = &sparc_opcodes[i];
- if ((opcode->match & insn.code) == opcode->match
- && (opcode->lose & insn.code) == 0)
- {
- /* Nonzero means that we have found an instruction which has
- the effect of adding or or'ing the imm13 field to rs1. */
- int imm_added_to_rs1 = 0;
-
- /* Nonzero means that we have found a plus sign in the args
- field of the opcode table. */
- int found_plus = 0;
-
- /* Do we have an 'or' instruction where rs1 is the same
- as rsd, and which has the i bit set? */
- if (opcode->match == 0x80102000
- && insn.rs1 == insn.rd)
- imm_added_to_rs1 = 1;
-
- if (strchr (opcode->args, 'S') != 0)
- /* Reject the special case for `set'.
- The real `sethi' will match. */
- continue;
- if (insn.rs1 != insn.rd
- && strchr (opcode->args, 'r') != 0)
- /* Can't do simple format if source and dest are different. */
- continue;
-
- fputs (opcode->name, stream);
-
- {
- register const char *s;
-
- if (opcode->args[0] != ',')
- fputs (" ", stream);
- for (s = opcode->args; *s != '\0'; ++s)
- {
- while (*s == ',')
- {
- fputs (",", stream);
- ++s;
-
- switch (*s) {
- case 'a':
- fputs ("a", stream);
- ++s;
- continue;
-#ifndef NO_V9
- case 'N':
- fputs("pn", stream);
- ++s;
- continue;
-
- case 'T':
- fputs("pt", stream);
- ++s;
- continue;
-#endif /* NO_V9 */
-
- default:
- break;
- } /* switch on arg */
- } /* while there are comma started args */
-
- fputs (" ", stream);
-
- switch (*s)
- {
- case '+':
- found_plus = 1;
-
- /* note fall-through */
- default:
- fprintf (stream, "%c", *s);
- break;
-
- case '#':
- fputs ("0", stream);
- break;
-
-#define reg(n) fprintf (stream, "%%%s", reg_names[n])
- case '1':
- case 'r':
- reg (insn.rs1);
- break;
-
- case '2':
- reg (insn.rs2);
- break;
-
- case 'd':
- reg (insn.rd);
- break;
-#undef reg
-
-#define freg(n) fprintf (stream, "%%%s", freg_names[n])
- case 'e':
- case 'v': /* double/even */
- case 'V': /* quad/multiple of 4 */
- freg (insn.rs1);
- break;
-
- case 'f':
- case 'B': /* double/even */
- case 'R': /* quad/multiple of 4 */
- freg (insn.rs2);
- break;
-
- case 'g':
- case 'H': /* double/even */
- case 'J': /* quad/multiple of 4 */
- freg (insn.rd);
- break;
-#undef freg
-
-#define creg(n) fprintf (stream, "%%c%u", (unsigned int) (n))
- case 'b':
- creg (insn.rs1);
- break;
-
- case 'c':
- creg (insn.rs2);
- break;
-
- case 'D':
- creg (insn.rd);
- break;
-#undef creg
-
- case 'h':
- fprintf (stream, "%%hi(%#x)",
- (unsigned int) insn.imm22 << 10);
- break;
-
- case 'i':
- {
- /* We cannot trust the compiler to sign-extend
- when extracting the bitfield, hence the shifts. */
- int imm = ((int) insn.imm13 << 19) >> 19;
-
- /* Check to see whether we have a 1+i, and take
- note of that fact.
-
- Note: because of the way we sort the table,
- we will be matching 1+i rather than i+1,
- so it is OK to assume that i is after +,
- not before it. */
- if (found_plus)
- imm_added_to_rs1 = 1;
-
- if (imm <= 9)
- fprintf (stream, "%d", imm);
- else
- fprintf (stream, "%#x", (unsigned) imm);
- }
- break;
-
-#ifndef NO_V9
- case 'I': /* 11 bit immediate. */
- case 'j': /* 10 bit immediate. */
- {
- /* We cannot trust the compiler to sign-extend
- when extracting the bitfield, hence the shifts. */
- int imm;
-
- if (*s == 'I')
- imm = ((int) insn.imm13 << 21) >> 21;
- else
- imm = ((int) insn.imm13 << 22) >> 22;
-
- /* Check to see whether we have a 1+i, and take
- note of that fact.
-
- Note: because of the way we sort the table,
- we will be matching 1+i rather than i+1,
- so it is OK to assume that i is after +,
- not before it. */
- if (found_plus)
- imm_added_to_rs1 = 1;
-
- if (imm <= 9)
- fprintf (stream, "%d", imm);
- else
- fprintf (stream, "%#x", (unsigned) imm);
- }
- break;
-
-
-
-
- case 'k':
- print_address ((bfd_vma)
- (memaddr
- + (((int) insn.disp14 << 18) >> 18) * 4),
- stream);
- break;
-
- case 'G':
- print_address ((bfd_vma)
- (memaddr
- /* We use only 19 of the 21 bits. */
- + (((int) insn.disp21 << 13) >> 13) * 4),
- stream);
- break;
-
- case '6':
- case '7':
- case '8':
- case '9':
- fprintf (stream, "fcc%c", *s - '6' + '0');
- break;
-
- case 'z':
- fputs ("icc", stream);
- break;
-
- case 'Z':
- fputs ("xcc", stream);
- break;
-
- case 'E':
- fputs ("%ccr", stream);
- break;
-
- case 's':
- fputs ("%fprs", stream);
- break;
-#endif /* NO_V9 */
-
- case 'M':
- fprintf(stream, "%%asr%d", insn.rs1);
- break;
-
- case 'm':
- fprintf(stream, "%%asr%d", insn.rd);
- break;
-
- case 'L':
- print_address ((bfd_vma) memaddr + insn.disp30 * 4,
- stream);
- break;
-
- case 'l':
- if ((insn.code >> 22) == 0)
- /* Special case for `unimp'. Don't try to turn
- it's operand into a function offset. */
- fprintf (stream, "%#x",
- (unsigned) (((int) insn.disp22 << 10) >> 10));
- else
- /* We cannot trust the compiler to sign-extend
- when extracting the bitfield, hence the shifts. */
- print_address ((bfd_vma)
- (memaddr
- + (((int) insn.disp22 << 10) >> 10) * 4),
- stream);
- break;
-
- case 'A':
- fprintf (stream, "(%d)", (int) insn.asi);
- break;
-
- case 'C':
- fputs ("%csr", stream);
- break;
-
- case 'F':
- fputs ("%fsr", stream);
- break;
-
- case 'p':
- fputs ("%psr", stream);
- break;
-
- case 'q':
- fputs ("%fq", stream);
- break;
-
- case 'Q':
- fputs ("%cq", stream);
- break;
-
- case 't':
- fputs ("%tbr", stream);
- break;
-
- case 'w':
- fputs ("%wim", stream);
- break;
-
- case 'y':
- fputs ("%y", stream);
- break;
- }
- }
- }
-
- /* If we are adding or or'ing something to rs1, then
- check to see whether the previous instruction was
- a sethi to the same register as in the sethi.
- If so, attempt to print the result of the add or
- or (in this context add and or do the same thing)
- and its symbolic value. */
- if (imm_added_to_rs1)
- {
- union sparc_insn prev_insn;
- int errcode = 0;
-
- memcpy(&prev_insn, buffer -4, sizeof (prev_insn));
-
- if (errcode == 0)
- {
- /* If it is a delayed branch, we need to look at the
- instruction before the delayed branch. This handles
- sequences such as
-
- sethi %o1, %hi(_foo), %o1
- call _printf
- or %o1, %lo(_foo), %o1
- */
-
- if (is_delayed_branch (prev_insn))
- memcpy(&prev_insn, buffer - 8, sizeof(prev_insn));
-
- }
-
- /* If there was a problem reading memory, then assume
- the previous instruction was not sethi. */
- if (errcode == 0)
- {
- /* Is it sethi to the same register? */
- if ((prev_insn.code & 0xc1c00000) == 0x01000000
- && prev_insn.rd == insn.rs1)
- {
- fprintf (stream, "\t! ");
- /* We cannot trust the compiler to sign-extend
- when extracting the bitfield, hence the shifts. */
- print_address (((int) prev_insn.imm22 << 10)
- | (insn.imm13 << 19) >> 19, stream);
- }
- }
- }
-
- return sizeof (insn);
- }
- }
-
- fprintf (stream, "%#8x", insn.code);
- return sizeof (insn);
-}
-
-
-/* Compare opcodes A and B. */
-
-static int
-compare_opcodes (a, b)
- char *a, *b;
-{
- struct sparc_opcode *op0 = (struct sparc_opcode *) a;
- struct sparc_opcode *op1 = (struct sparc_opcode *) b;
- unsigned long int match0 = op0->match, match1 = op1->match;
- unsigned long int lose0 = op0->lose, lose1 = op1->lose;
- register unsigned int i;
-
- /* If a bit is set in both match and lose, there is something
- wrong with the opcode table. */
- if (match0 & lose0)
- {
- fprintf (stderr, "Internal error: bad sparc-opcode.h: \"%s\", %#.8lx, %#.8lx\n",
- op0->name, match0, lose0);
- op0->lose &= ~op0->match;
- lose0 = op0->lose;
- }
-
- if (match1 & lose1)
- {
- fprintf (stderr, "Internal error: bad sparc-opcode.h: \"%s\", %#.8lx, %#.8lx\n",
- op1->name, match1, lose1);
- op1->lose &= ~op1->match;
- lose1 = op1->lose;
- }
-
- /* Because the bits that are variable in one opcode are constant in
- another, it is important to order the opcodes in the right order. */
- for (i = 0; i < 32; ++i)
- {
- unsigned long int x = 1 << i;
- int x0 = (match0 & x) != 0;
- int x1 = (match1 & x) != 0;
-
- if (x0 != x1)
- return x1 - x0;
- }
-
- for (i = 0; i < 32; ++i)
- {
- unsigned long int x = 1 << i;
- int x0 = (lose0 & x) != 0;
- int x1 = (lose1 & x) != 0;
-
- if (x0 != x1)
- return x1 - x0;
- }
-
- /* They are functionally equal. So as long as the opcode table is
- valid, we can put whichever one first we want, on aesthetic grounds. */
- {
- int length_diff = strlen (op0->args) - strlen (op1->args);
- if (length_diff != 0)
- /* Put the one with fewer arguments first. */
- return length_diff;
- }
-
- /* Put 1+i before i+1. */
- {
- char *p0 = (char *) strchr(op0->args, '+');
- char *p1 = (char *) strchr(op1->args, '+');
-
- if (p0 && p1)
- {
- /* There is a plus in both operands. Note that a plus
- sign cannot be the first character in args,
- so the following [-1]'s are valid. */
- if (p0[-1] == 'i' && p1[1] == 'i')
- /* op0 is i+1 and op1 is 1+i, so op1 goes first. */
- return 1;
- if (p0[1] == 'i' && p1[-1] == 'i')
- /* op0 is 1+i and op1 is i+1, so op0 goes first. */
- return -1;
- }
- }
-
- /* They are, as far as we can tell, identical.
- Since qsort may have rearranged the table partially, there is
- no way to tell which one was first in the opcode table as
- written, so just say there are equal. */
- return 0;
-}
--- /dev/null
+/* Print SPARC instructions.
+ Copyright 1989, 1991, 1992, 1993 Free Software Foundation, Inc.
+
+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., 675 Mass Ave, Cambridge, MA 02139, USA. */
+
+#include "opcode/sparc.h"
+#include "dis-asm.h"
+#include <string.h>
+
+static char *reg_names[] =
+ { "g0", "g1", "g2", "g3", "g4", "g5", "g6", "g7",
+ "o0", "o1", "o2", "o3", "o4", "o5", "sp", "o7",
+ "l0", "l1", "l2", "l3", "l4", "l5", "l6", "l7",
+ "i0", "i1", "i2", "i3", "i4", "i5", "fp", "i7",
+ "f0", "f1", "f2", "f3", "f4", "f5", "f6", "f7",
+ "f8", "f9", "f10", "f11", "f12", "f13", "f14", "f15",
+ "f16", "f17", "f18", "f19", "f20", "f21", "f22", "f23",
+ "f24", "f25", "f26", "f27", "f28", "f29", "f30", "f31",
+ "y", "psr", "wim", "tbr", "pc", "npc", "fpsr", "cpsr" };
+
+#define freg_names (®_names[4 * 8])
+
+/* FIXME--need to deal with byte order (probably using masking and
+ shifting rather than bitfields is easiest). */
+
+union sparc_insn
+ {
+ unsigned long int code;
+ struct
+ {
+ unsigned int anop:2;
+#define op ldst.anop
+ unsigned int anrd:5;
+#define rd ldst.anrd
+ unsigned int op3:6;
+ unsigned int anrs1:5;
+#define rs1 ldst.anrs1
+ unsigned int i:1;
+ unsigned int anasi:8;
+#define asi ldst.anasi
+ unsigned int anrs2:5;
+#define rs2 ldst.anrs2
+#define shcnt rs2
+ } ldst;
+ struct
+ {
+ unsigned int anop:2, anrd:5, op3:6, anrs1:5, i:1;
+ unsigned int IMM13:13;
+#define imm13 IMM13.IMM13
+ } IMM13;
+ struct
+ {
+ unsigned int anop:2;
+ unsigned int a:1;
+ unsigned int cond:4;
+ unsigned int op2:3;
+ unsigned int DISP22:22;
+#define disp22 branch.DISP22
+ } branch;
+#ifndef NO_V9
+ struct
+ {
+ unsigned int _OP:2, _RD:5, op3:6, _RS1:5;
+ unsigned int DISP14:14;
+#define disp14 DISP14.DISP14
+ } DISP14;
+ struct
+ {
+ unsigned int _OP:2;
+ unsigned int a:1;
+ unsigned int cond:4;
+ unsigned int op2:3;
+ unsigned int p:1;
+ unsigned int DISP21:21;
+#define disp21 branch2.DISP21
+ } branch2;
+#endif /* NO_V9 */
+
+#define imm22 disp22
+ struct
+ {
+ unsigned int anop:2;
+ unsigned int adisp30:30;
+#define disp30 call.adisp30
+ } call;
+ };
+
+/* Nonzero if INSN is the opcode for a delayed branch. */
+static int
+is_delayed_branch (insn)
+ union sparc_insn insn;
+{
+ unsigned int i;
+
+ for (i = 0; i < NUMOPCODES; ++i)
+ {
+ const struct sparc_opcode *opcode = &sparc_opcodes[i];
+ if ((opcode->match & insn.code) == opcode->match
+ && (opcode->lose & insn.code) == 0)
+ return (opcode->flags & F_DELAYED);
+ }
+ return 0;
+}
+
+static int opcodes_sorted = 0;
+extern void qsort ();
+
+/* Print one instruction from MEMADDR on STREAM.
+
+ We suffix the instruction with a comment that gives the absolute
+ address involved, as well as its symbolic form, if the instruction
+ is preceded by a findable `sethi' and it either adds an immediate
+ displacement to that register, or it is an `add' or `or' instruction
+ on that register. */
+int
+print_insn_sparc (memaddr, info)
+ bfd_vma memaddr;
+ disassemble_info *info;
+{
+ FILE *stream = info->stream;
+ union sparc_insn insn;
+
+ register unsigned int i;
+
+ if (!opcodes_sorted)
+ {
+ static int compare_opcodes ();
+ qsort ((char *) sparc_opcodes, NUMOPCODES,
+ sizeof (sparc_opcodes[0]), compare_opcodes);
+ opcodes_sorted = 1;
+ }
+
+ {
+ int status =
+ (*info->read_memory_func) (memaddr, (char *) &insn, sizeof (insn), info);
+ if (status != 0)
+ {
+ (*info->memory_error_func) (status, memaddr, info);
+ return -1;
+ }
+ }
+
+ for (i = 0; i < NUMOPCODES; ++i)
+ {
+ const struct sparc_opcode *opcode = &sparc_opcodes[i];
+ if ((opcode->match & insn.code) == opcode->match
+ && (opcode->lose & insn.code) == 0)
+ {
+ /* Nonzero means that we have found an instruction which has
+ the effect of adding or or'ing the imm13 field to rs1. */
+ int imm_added_to_rs1 = 0;
+
+ /* Nonzero means that we have found a plus sign in the args
+ field of the opcode table. */
+ int found_plus = 0;
+
+ /* Do we have an `add' or `or' instruction where rs1 is the same
+ as rsd, and which has the i bit set? */
+ if ((opcode->match == 0x80102000 || opcode->match == 0x80002000)
+ /* (or) (add) */
+ && insn.rs1 == insn.rd)
+ imm_added_to_rs1 = 1;
+
+ if (insn.rs1 != insn.rd
+ && strchr (opcode->args, 'r') != 0)
+ /* Can't do simple format if source and dest are different. */
+ continue;
+
+ (*info->fprintf_func) (stream, opcode->name);
+
+ {
+ register const char *s;
+
+ if (opcode->args[0] != ',')
+ (*info->fprintf_func) (stream, " ");
+ for (s = opcode->args; *s != '\0'; ++s)
+ {
+ while (*s == ',')
+ {
+ (*info->fprintf_func) (stream, ",");
+ ++s;
+ switch (*s) {
+ case 'a':
+ (*info->fprintf_func) (stream, "a");
+ ++s;
+ continue;
+#ifndef NO_V9
+ case 'N':
+ (*info->fprintf_func) (stream, "pn");
+ ++s;
+ continue;
+
+ case 'T':
+ (*info->fprintf_func) (stream, "pt");
+ ++s;
+ continue;
+#endif /* NO_V9 */
+
+ default:
+ break;
+ } /* switch on arg */
+ } /* while there are comma started args */
+
+ (*info->fprintf_func) (stream, " ");
+
+ switch (*s)
+ {
+ case '+':
+ found_plus = 1;
+
+ /* note fall-through */
+ default:
+ (*info->fprintf_func) (stream, "%c", *s);
+ break;
+
+ case '#':
+ (*info->fprintf_func) (stream, "0");
+ break;
+
+#define reg(n) (*info->fprintf_func) (stream, "%%%s", reg_names[n])
+ case '1':
+ case 'r':
+ reg (insn.rs1);
+ break;
+
+ case '2':
+ reg (insn.rs2);
+ break;
+
+ case 'd':
+ reg (insn.rd);
+ break;
+#undef reg
+
+#define freg(n) (*info->fprintf_func) (stream, "%%%s", freg_names[n])
+ case 'e':
+ case 'v': /* double/even */
+ case 'V': /* quad/multiple of 4 */
+ freg (insn.rs1);
+ break;
+
+ case 'f':
+ case 'B': /* double/even */
+ case 'R': /* quad/multiple of 4 */
+ freg (insn.rs2);
+ break;
+
+ case 'g':
+ case 'H': /* double/even */
+ case 'J': /* quad/multiple of 4 */
+ freg (insn.rd);
+ break;
+#undef freg
+
+#define creg(n) (*info->fprintf_func) (stream, "%%c%u", (unsigned int) (n))
+ case 'b':
+ creg (insn.rs1);
+ break;
+
+ case 'c':
+ creg (insn.rs2);
+ break;
+
+ case 'D':
+ creg (insn.rd);
+ break;
+#undef creg
+
+ case 'h':
+ (*info->fprintf_func) (stream, "%%hi(%#x)",
+ (int) insn.imm22 << 10);
+ break;
+
+ case 'i':
+ {
+ /* We cannot trust the compiler to sign-extend
+ when extracting the bitfield, hence the shifts. */
+ int imm = ((int) insn.imm13 << 19) >> 19;
+
+ /* Check to see whether we have a 1+i, and take
+ note of that fact.
+
+ Note: because of the way we sort the table,
+ we will be matching 1+i rather than i+1,
+ so it is OK to assume that i is after +,
+ not before it. */
+ if (found_plus)
+ imm_added_to_rs1 = 1;
+
+ if (imm <= 9)
+ (*info->fprintf_func) (stream, "%d", imm);
+ else
+ (*info->fprintf_func) (stream, "%#x", imm);
+ }
+ break;
+
+#ifndef NO_V9
+ case 'I': /* 11 bit immediate. */
+ case 'j': /* 10 bit immediate. */
+ {
+ /* We cannot trust the compiler to sign-extend
+ when extracting the bitfield, hence the shifts. */
+ int imm;
+
+ if (*s == 'I')
+ imm = ((int) insn.imm13 << 21) >> 21;
+ else
+ imm = ((int) insn.imm13 << 22) >> 22;
+
+ /* Check to see whether we have a 1+i, and take
+ note of that fact.
+
+ Note: because of the way we sort the table,
+ we will be matching 1+i rather than i+1,
+ so it is OK to assume that i is after +,
+ not before it. */
+ if (found_plus)
+ imm_added_to_rs1 = 1;
+
+ if (imm <= 9)
+ (info->fprintf_func) (stream, "%d", imm);
+ else
+ (info->fprintf_func) (stream, "%#x", (unsigned) imm);
+ }
+ break;
+
+
+
+
+ case 'k':
+ print_address ((bfd_vma)
+ (memaddr
+ + (((int) insn.disp14 << 18) >> 18) * 4),
+ stream);
+ break;
+
+ case 'G':
+ print_address ((bfd_vma)
+ (memaddr
+ /* We use only 19 of the 21 bits. */
+ + (((int) insn.disp21 << 13) >> 13) * 4),
+ stream);
+ break;
+
+ case '6':
+ case '7':
+ case '8':
+ case '9':
+ fprintf (stream, "fcc%c", *s - '6' + '0');
+ break;
+
+ case 'z':
+ fputs ("icc", stream);
+ break;
+
+ case 'Z':
+ fputs ("xcc", stream);
+ break;
+
+ case 'E':
+ fputs ("%ccr", stream);
+ break;
+
+ case 's':
+ fputs ("%fprs", stream);
+ break;
+#endif /* NO_V9 */
+
+ case 'M':
+ fprintf(stream, "%%asr%d", insn.rs1);
+ break;
+
+ case 'm':
+ fprintf(stream, "%%asr%d", insn.rd);
+ break;
+
+ case 'L':
+ print_address ((bfd_vma) memaddr + insn.disp30 * 4,
+ stream);
+ break;
+
+ case 'l':
+ if ((insn.code >> 22) == 0)
+ /* Special case for `unimp'. Don't try to turn
+ it's operand into a function offset. */
+ (*info->fprintf_func)
+ (stream, "%#x",
+ (int) (((int) insn.disp22 << 10) >> 10));
+ else
+ /* We cannot trust the compiler to sign-extend
+ when extracting the bitfield, hence the shifts. */
+ print_address ((bfd_vma)
+ (memaddr
+ + (((int) insn.disp22 << 10) >> 10) * 4),
+ stream);
+ break;
+
+ case 'A':
+ (*info->fprintf_func) (stream, "(%d)", (int) insn.asi);
+ break;
+
+ case 'C':
+ (*info->fprintf_func) (stream, "%csr");
+ break;
+
+ case 'F':
+ (*info->fprintf_func) (stream, "%fsr");
+ break;
+
+ case 'p':
+ (*info->fprintf_func) (stream, "%psr");
+ break;
+
+ case 'q':
+ (*info->fprintf_func) (stream, "%fq");
+ break;
+
+ case 'Q':
+ (*info->fprintf_func) (stream, "%cq");
+ break;
+
+ case 't':
+ (*info->fprintf_func) (stream, "%tbr");
+ break;
+
+ case 'w':
+ (*info->fprintf_func) (stream, "%wim");
+ break;
+
+ case 'y':
+ (*info->fprintf_func) (stream, "%y");
+ break;
+ }
+ }
+ }
+
+ /* If we are adding or or'ing something to rs1, then
+ check to see whether the previous instruction was
+ a sethi to the same register as in the sethi.
+ If so, attempt to print the result of the add or
+ or (in this context add and or do the same thing)
+ and its symbolic value. */
+ if (imm_added_to_rs1)
+ {
+ union sparc_insn prev_insn;
+ int errcode;
+
+ errcode =
+ (*info->read_memory_func)
+ (memaddr - 4,
+ (char *)&prev_insn, sizeof (prev_insn));
+
+ if (errcode == 0)
+ {
+ /* If it is a delayed branch, we need to look at the
+ instruction before the delayed branch. This handles
+ sequences such as
+
+ sethi %o1, %hi(_foo), %o1
+ call _printf
+ or %o1, %lo(_foo), %o1
+ */
+
+ if (is_delayed_branch (prev_insn))
+ errcode = (*info->read_memory_func)
+ (memaddr - 8, (char *)&prev_insn, sizeof (prev_insn));
+ }
+
+ /* If there was a problem reading memory, then assume
+ the previous instruction was not sethi. */
+ if (errcode == 0)
+ {
+ /* Is it sethi to the same register? */
+ if ((prev_insn.code & 0xc1c00000) == 0x01000000
+ && prev_insn.rd == insn.rs1)
+ {
+ (*info->fprintf_func) (stream, "\t! ");
+ /* We cannot trust the compiler to sign-extend
+ when extracting the bitfield, hence the shifts. */
+ print_address (((int) prev_insn.imm22 << 10)
+ | (insn.imm13 << 19) >> 19, stream);
+ }
+ }
+ }
+
+ return sizeof (insn);
+ }
+ }
+
+ (*info->fprintf_func) (stream, "%#8x", insn.code);
+ return sizeof (insn);
+}
+
+/* Compare opcodes A and B. */
+
+static int
+compare_opcodes (a, b)
+ char *a, *b;
+{
+ struct sparc_opcode *op0 = (struct sparc_opcode *) a;
+ struct sparc_opcode *op1 = (struct sparc_opcode *) b;
+ unsigned long int match0 = op0->match, match1 = op1->match;
+ unsigned long int lose0 = op0->lose, lose1 = op1->lose;
+ register unsigned int i;
+
+ /* If a bit is set in both match and lose, there is something
+ wrong with the opcode table. */
+ if (match0 & lose0)
+ {
+ fprintf (stderr, "Internal error: bad sparc-opcode.h: \"%s\", %#.8lx, %#.8lx\n",
+ op0->name, match0, lose0);
+ op0->lose &= ~op0->match;
+ lose0 = op0->lose;
+ }
+
+ if (match1 & lose1)
+ {
+ fprintf (stderr, "Internal error: bad sparc-opcode.h: \"%s\", %#.8lx, %#.8lx\n",
+ op1->name, match1, lose1);
+ op1->lose &= ~op1->match;
+ lose1 = op1->lose;
+ }
+
+ /* Because the bits that are variable in one opcode are constant in
+ another, it is important to order the opcodes in the right order. */
+ for (i = 0; i < 32; ++i)
+ {
+ unsigned long int x = 1 << i;
+ int x0 = (match0 & x) != 0;
+ int x1 = (match1 & x) != 0;
+
+ if (x0 != x1)
+ return x1 - x0;
+ }
+
+ for (i = 0; i < 32; ++i)
+ {
+ unsigned long int x = 1 << i;
+ int x0 = (lose0 & x) != 0;
+ int x1 = (lose1 & x) != 0;
+
+ if (x0 != x1)
+ return x1 - x0;
+ }
+
+ /* They are functionally equal. So as long as the opcode table is
+ valid, we can put whichever one first we want, on aesthetic grounds. */
+
+ /* Our first aesthetic ground is that aliases defer to real insns. */
+ {
+ int alias_diff = (op0->flags & F_ALIAS) - (op1->flags & F_ALIAS);
+ if (alias_diff != 0)
+ /* Put the one that isn't an alias first. */
+ return alias_diff;
+ }
+
+ /* Except for aliases, two "identical" instructions had
+ better have the same opcode. This is a sanity check on the table. */
+ i = strcmp (op0->name, op1->name);
+ if (i)
+ if (op0->flags & F_ALIAS) /* If they're both aliases, be arbitrary. */
+ return i;
+ else
+ fprintf (stderr,
+ "Internal error: bad sparc-opcode.h: \"%s\" == \"%s\"\n",
+ op0->name, op1->name);
+
+ /* Fewer arguments are preferred. */
+ {
+ int length_diff = strlen (op0->args) - strlen (op1->args);
+ if (length_diff != 0)
+ /* Put the one with fewer arguments first. */
+ return length_diff;
+ }
+
+ /* Put 1+i before i+1. */
+ {
+ char *p0 = (char *) strchr(op0->args, '+');
+ char *p1 = (char *) strchr(op1->args, '+');
+
+ if (p0 && p1)
+ {
+ /* There is a plus in both operands. Note that a plus
+ sign cannot be the first character in args,
+ so the following [-1]'s are valid. */
+ if (p0[-1] == 'i' && p1[1] == 'i')
+ /* op0 is i+1 and op1 is 1+i, so op1 goes first. */
+ return 1;
+ if (p0[1] == 'i' && p1[-1] == 'i')
+ /* op0 is 1+i and op1 is i+1, so op0 goes first. */
+ return -1;
+ }
+ }
+
+ /* They are, as far as we can tell, identical.
+ Since qsort may have rearranged the table partially, there is
+ no way to tell which one was first in the opcode table as
+ written, so just say there are equal. */
+ return 0;
+}
projects / deliverable / binutils-gdb.git / commitdiff
