/* Print TI TMS320C80 (MVP) instructions
- Copyright 1996 Free Software Foundation, Inc.
+ Copyright 1996, 1997 Free Software Foundation, Inc.
This file is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
#include "opcode/tic80.h"
#include "dis-asm.h"
-#define M_SI(insn,op) ((((op) -> flags & TIC80_OPERAND_M_SI) != 0) && ((insn) & (1 << 17)))
-#define M_LI(insn,op) ((((op) -> flags & TIC80_OPERAND_M_LI) != 0) && ((insn) & (1 << 15)))
-#define R_SCALED(insn,op) ((((op) -> flags & TIC80_OPERAND_SCALED) != 0) && ((insn) & (1 << 11)))
+static int length;
-int
-print_insn_tic80 (memaddr, info)
- bfd_vma memaddr;
+static void print_operand_bitnum PARAMS ((struct disassemble_info *, long));
+static void print_operand_condition_code PARAMS ((struct disassemble_info *, long));
+static void print_operand_control_register PARAMS ((struct disassemble_info *, long));
+static void print_operand_float PARAMS ((struct disassemble_info *, long));
+static void print_operand_integer PARAMS ((struct disassemble_info *, long));
+static void print_operand PARAMS ((struct disassemble_info *, long, unsigned long,
+ const struct tic80_operand *, bfd_vma));
+static int print_one_instruction PARAMS ((struct disassemble_info *, bfd_vma,
+ unsigned long, const struct tic80_opcode *));
+static int print_instruction PARAMS ((struct disassemble_info *, bfd_vma, unsigned long,
+ const struct tic80_opcode *));
+static int fill_instruction PARAMS ((struct disassemble_info *, bfd_vma,
+ unsigned long *));
+
+\f
+/* Print an integer operand. Try to be somewhat smart about the
+ format by assuming that small positive or negative integers are
+ probably loop increment values, structure offsets, or similar
+ values that are more meaningful printed as signed decimal values.
+ Larger numbers are probably better printed as hex values. */
+
+static void
+print_operand_integer (info, value)
struct disassemble_info *info;
+ long value;
{
- bfd_byte buffer[4];
- int status;
- unsigned long insn[2];
- const struct tic80_opcode *opcode;
- const struct tic80_opcode *opcode_end;
- const unsigned char *opindex;
- const struct tic80_operand *operand;
- int close_paren;
- int length = 4;
+ if ((value > 9999 || value < -9999))
+ {
+ (*info -> fprintf_func) (info -> stream, "%#lx", value);
+ }
+ else
+ {
+ (*info -> fprintf_func) (info -> stream, "%ld", value);
+ }
+}
- status = (*info->read_memory_func) (memaddr, buffer, 4, info);
- if (status != 0)
+\f
+/* FIXME: depends upon sizeof (long) == sizeof (float) and
+ also upon host floating point format matching target
+ floating point format. */
+
+static void
+print_operand_float (info, value)
+ struct disassemble_info *info;
+ long value;
+{
+ union { float f; long l; } fval;
+
+ fval.l = value;
+ (*info -> fprintf_func) (info -> stream, "%g", fval.f);
+}
+
+\f
+static void
+print_operand_control_register (info, value)
+ struct disassemble_info *info;
+ long value;
+{
+ char *tmp;
+
+ switch (value)
{
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
+ case 0: tmp = "EPC"; break;
+ case 1: tmp = "EIP"; break;
+ case 2: tmp = "CONFIG"; break;
+ case 4: tmp = "INTPEN"; break;
+ case 6: tmp = "IE"; break;
+ case 8: tmp = "FPST"; break;
+ case 0xA: tmp = "PPERROR"; break;
+ case 0xD: tmp = "PKTREQ"; break;
+ case 0xE: tmp = "TCOUNT"; break;
+ case 0xF: tmp = "TSCALE"; break;
+ case 0x10: tmp = "FLTOP"; break;
+ case 0x11: tmp = "FLTADR"; break;
+ case 0x12: tmp = "FLTTAG"; break;
+ case 0x13: tmp = "FLTDTL"; break;
+ case 0x14: tmp = "FLTDTH"; break;
+ case 0x20: tmp = "SYSSTK"; break;
+ case 0x21: tmp = "SYSTMP"; break;
+ case 0x30: tmp = "MPC"; break;
+ case 0x31: tmp = "MIP"; break;
+ case 0x33: tmp = "ECOMCNTL"; break;
+ case 0x34: tmp = "ANASTAT"; break;
+ case 0x39: tmp = "BRK1"; break;
+ case 0x3A: tmp = "BRK2"; break;
+ case 0x200: tmp = "ITAG0"; break;
+ case 0x201: tmp = "ITAG1"; break;
+ case 0x202: tmp = "ITAG2"; break;
+ case 0x203: tmp = "ITAG3"; break;
+ case 0x204: tmp = "ITAG4"; break;
+ case 0x205: tmp = "ITAG5"; break;
+ case 0x206: tmp = "ITAG6"; break;
+ case 0x207: tmp = "ITAG7"; break;
+ case 0x208: tmp = "ITAG8"; break;
+ case 0x209: tmp = "ITAG9"; break;
+ case 0x20A: tmp = "ITAG10"; break;
+ case 0x20B: tmp = "ITAG11"; break;
+ case 0x20C: tmp = "ITAG12"; break;
+ case 0x20D: tmp = "ITAG13"; break;
+ case 0x20E: tmp = "ITAG14"; break;
+ case 0x20F: tmp = "ITAG15"; break;
+ case 0x300: tmp = "ILRU"; break;
+ case 0x400: tmp = "DTAG0"; break;
+ case 0x401: tmp = "DTAG1"; break;
+ case 0x402: tmp = "DTAG2"; break;
+ case 0x403: tmp = "DTAG3"; break;
+ case 0x404: tmp = "DTAG4"; break;
+ case 0x405: tmp = "DTAG5"; break;
+ case 0x406: tmp = "DTAG6"; break;
+ case 0x407: tmp = "DTAG7"; break;
+ case 0x408: tmp = "DTAG8"; break;
+ case 0x409: tmp = "DTAG9"; break;
+ case 0x40A: tmp = "DTAG10"; break;
+ case 0x40B: tmp = "DTAG11"; break;
+ case 0x40C: tmp = "DTAG12"; break;
+ case 0x40D: tmp = "DTAG13"; break;
+ case 0x40E: tmp = "DTAG14"; break;
+ case 0x40F: tmp = "DTAG15"; break;
+ case 0x500: tmp = "DLRU"; break;
+ case 0x4000: tmp = "IN0P"; break;
+ case 0x4001: tmp = "IN1P"; break;
+ case 0x4002: tmp = "OUTP"; break;
+ default: tmp = NULL; break;
}
+ if (tmp != NULL)
+ {
+ (*info -> fprintf_func) (info -> stream, "%s", tmp);
+ }
+ else
+ {
+ (*info -> fprintf_func) (info -> stream, "%#lx", value);
+ }
+}
- if (info -> endian == BFD_ENDIAN_LITTLE)
+\f
+static void
+print_operand_condition_code (info, value)
+ struct disassemble_info *info;
+ long value;
+{
+ const char *syms[] = {
+ "nev.b", "gt0.b", "eq0.b", "ge0.b", "lt0.b", "ne0.b", "le0.b", "alw.b",
+ "nev.h", "gt0.h", "eq0.h", "ge0.h", "lt0.h", "ne0.h", "le0.h", "alw.h",
+ "nev.w", "gt0.w", "eq0.w", "ge0.w", "lt0.w", "ne0.w", "le0.w", "alw.w"
+ };
+
+ if (value < (sizeof (syms) / sizeof (syms[0])))
{
- insn[0] = bfd_getl32 (buffer);
+ /* Found a value within range */
+ (*info -> fprintf_func) (info -> stream, "%s", syms[value]);
}
- else if (info -> endian == BFD_ENDIAN_BIG)
+ else
+ {
+ /* Not in range, just print as decimal digit. */
+ (*info -> fprintf_func) (info -> stream, "%ld", value);
+ }
+}
+
+\f
+static void
+print_operand_bitnum (info, value)
+ struct disassemble_info *info;
+ long value;
+{
+ int bitnum;
+ const char *syms[] = {
+ "eq.b", "ne.b", "gt.b", "le.b", "lt.b", "ge.b",
+ "hi.b", "ls.b", "lo.b", "hs.b", "eq.h", "ne.h",
+ "gt.h", "le.h", "lt.h", "ge.h", "hi.h", "ls.h",
+ "lo.h", "hs.h", "eq.w", "ne.w", "gt.w", "le.w",
+ "lt.w", "ge.w", "hi.w", "ls.w", "lo.w", "hs.w"
+ };
+
+ bitnum = ~value & 0x1F;
+ if (bitnum < (sizeof (syms) / sizeof (syms[0])))
{
- insn[0] = bfd_getb32 (buffer);
+ /* Found a value within range */
+ (*info -> fprintf_func) (info -> stream, "%s", syms[bitnum]);
}
else
{
- /* FIXME: Should probably just default to one or the other */
- abort ();
+ /* Not in range, just print as bit number */
+ (*info -> fprintf_func) (info -> stream, "%ld", bitnum);
}
+}
- /* Find the first opcode match in the opcodes table. FIXME: there should
- be faster ways to find one (hash table or binary search), but don't
- worry too much about it until other TIc80 support is finished. */
+\f
+/* Print the operand as directed by the flags. */
- opcode_end = tic80_opcodes + tic80_num_opcodes;
- for (opcode = tic80_opcodes; opcode < opcode_end; opcode++)
+#define M_SI(insn,op) ((((op) -> flags & TIC80_OPERAND_M_SI) != 0) && ((insn) & (1 << 17)))
+#define M_LI(insn,op) ((((op) -> flags & TIC80_OPERAND_M_LI) != 0) && ((insn) & (1 << 15)))
+#define R_SCALED(insn,op) ((((op) -> flags & TIC80_OPERAND_SCALED) != 0) && ((insn) & (1 << 11)))
+
+static void
+print_operand (info, value, insn, operand, memaddr)
+ struct disassemble_info *info;
+ long value;
+ unsigned long insn;
+ const struct tic80_operand *operand;
+ bfd_vma memaddr;
+{
+ if ((operand -> flags & TIC80_OPERAND_GPR) != 0)
{
- if ((insn[0] & opcode -> mask) == opcode -> opcode)
+ (*info -> fprintf_func) (info -> stream, "r%ld", value);
+ if (M_SI (insn, operand) || M_LI (insn, operand))
{
- break;
+ (*info -> fprintf_func) (info -> stream, ":m");
}
}
-
- if (opcode == opcode_end)
+ else if ((operand -> flags & TIC80_OPERAND_FPA) != 0)
{
- /* No match found, just print the bits as a .word directive */
- (*info -> fprintf_func) (info -> stream, ".word %#08lx", insn[0]);
+ (*info -> fprintf_func) (info -> stream, "a%ld", value);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_PCREL) != 0)
+ {
+ (*info -> print_address_func) (memaddr + 4 * value, info);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_BASEREL) != 0)
+ {
+ (*info -> print_address_func) (value, info);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_BITNUM) != 0)
+ {
+ print_operand_bitnum (info, value);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_CC) != 0)
+ {
+ print_operand_condition_code (info, value);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_CR) != 0)
+ {
+ print_operand_control_register (info, value);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_FLOAT) != 0)
+ {
+ print_operand_float (info, value);
+ }
+ else if ((operand -> flags & TIC80_OPERAND_BITFIELD))
+ {
+ (*info -> fprintf_func) (info -> stream, "%#lx", value);
}
else
{
- /* Match found, decode the instruction. */
- (*info -> fprintf_func) (info -> stream, "%s", opcode -> name);
+ print_operand_integer (info, value);
+ }
+
+ /* If this is a scaled operand, then print the modifier */
+
+ if (R_SCALED (insn, operand))
+ {
+ (*info -> fprintf_func) (info -> stream, ":s");
+ }
+}
+
+\f
+/* We have chosen an opcode table entry */
+
+static int
+print_one_instruction (info, memaddr, insn, opcode)
+ struct disassemble_info *info;
+ bfd_vma memaddr;
+ unsigned long insn;
+ const struct tic80_opcode *opcode;
+{
+ const struct tic80_operand *operand;
+ long value;
+ int status;
+ const unsigned char *opindex;
+ bfd_byte buffer[4];
+ int close_paren;
+
+ (*info -> fprintf_func) (info -> stream, "%-10s", opcode -> name);
- /* Now extract and print the operands. */
- if (opcode -> operands[0] != 0)
+ for (opindex = opcode -> operands; *opindex != 0; opindex++)
+ {
+ operand = tic80_operands + *opindex;
+
+ /* Extract the value from the instruction. */
+ if (operand -> extract)
{
- (*info -> fprintf_func) (info -> stream, "\t");
+ value = (*operand -> extract) (insn, (int *) NULL);
}
- for (opindex = opcode -> operands; *opindex != 0; opindex++)
+ else if (operand -> bits == 32)
{
- long value;
-
- operand = tic80_operands + *opindex;
-
- /* Extract the value from the instruction. */
- if (operand -> extract)
+ status = fill_instruction (info, memaddr, (unsigned long *) &value);
+ if (status == -1)
{
- value = (*operand -> extract) (insn[0], (int *) NULL);
+ return (status);
}
- else if (operand -> bits == 32)
- {
- status = (*info->read_memory_func) (memaddr + 4, buffer, 4, info);
- if (status != 0)
- {
- (*info->memory_error_func) (status, memaddr, info);
- return -1;
- }
-
- if (info -> endian == BFD_ENDIAN_LITTLE)
- {
- insn[1] = bfd_getl32 (buffer);
- }
- else if (info -> endian == BFD_ENDIAN_BIG)
- {
- insn[1] = bfd_getb32 (buffer);
- }
- value = (long) insn[1];
- length += 4;
- }
- else
+ }
+ else
+ {
+ value = (insn >> operand -> shift) & ((1 << operand -> bits) - 1);
+ if ((operand -> flags & TIC80_OPERAND_SIGNED) != 0
+ && (value & (1 << (operand -> bits - 1))) != 0)
{
- value = (insn[0] >> operand -> shift) & ((1 << operand -> bits) - 1);
- if ((operand -> flags & TIC80_OPERAND_SIGNED) != 0
- && (value & (1 << (operand -> bits - 1))) != 0)
- value -= 1 << operand -> bits;
+ value -= 1 << operand -> bits;
}
+ }
- /* If this operand is enclosed in parenthesis, then print
- the open paren, otherwise just print the regular comma
- separator, except for the first operand. */
+ /* If this operand is enclosed in parenthesis, then print
+ the open paren, otherwise just print the regular comma
+ separator, except for the first operand. */
- if ((operand -> flags & TIC80_OPERAND_PARENS) == 0)
- {
- close_paren = 0;
- if (opindex != opcode -> operands)
- {
- (*info -> fprintf_func) (info -> stream, ",");
- }
- }
- else
+ if ((operand -> flags & TIC80_OPERAND_PARENS) == 0)
+ {
+ close_paren = 0;
+ if (opindex != opcode -> operands)
{
- close_paren = 1;
- (*info -> fprintf_func) (info -> stream, "(");
+ (*info -> fprintf_func) (info -> stream, ",");
}
+ }
+ else
+ {
+ close_paren = 1;
+ (*info -> fprintf_func) (info -> stream, "(");
+ }
- /* Print the operand as directed by the flags. */
+ print_operand (info, value, insn, operand, memaddr);
- if ((operand -> flags & TIC80_OPERAND_GPR) != 0)
- {
- (*info -> fprintf_func) (info -> stream, "r%ld", value);
- if (M_SI (insn[0], operand) || M_LI (insn[0], operand))
- {
- (*info -> fprintf_func) (info -> stream, ":m");
- }
- }
- else if ((operand -> flags & TIC80_OPERAND_FPA) != 0)
- {
- (*info -> fprintf_func) (info -> stream, "a%ld", value);
- }
- else if ((operand -> flags & TIC80_OPERAND_RELATIVE) != 0)
- {
- (*info -> print_address_func) (memaddr + 4 * value, info);
- }
- else if ((operand -> flags & TIC80_OPERAND_BITNUM) != 0)
- {
- char *syms[30] = {
- "eq.b", "ne.b", "gt.b", "le.b", "lt.b", "ge.b",
- "hi.b", "ls.b", "lo.b", "hs.b", "eq.h", "ne.h",
- "gt.h", "le.h", "lt.h", "ge.h", "hi.h", "ls.h",
- "lo.h", "hs.h", "eq.w", "ne.w", "gt.w", "le.w",
- "lt.w", "ge.w", "hi.w", "ls.w", "lo.w", "hs.w"
- };
- int bitnum = ~value & 0x1F;
-
- if (bitnum < 30)
- {
- /* Found a value within range */
- (*info -> fprintf_func) (info -> stream, "%s", syms[bitnum]);
- }
- else
- {
- /* Not in range, just print as bit number */
- (*info -> fprintf_func) (info -> stream, "%ld", bitnum);
- }
- }
- else if ((operand -> flags & TIC80_OPERAND_CC) != 0)
- {
- char *syms[24] = {
- "nev.b", "gt0.b", "eq0.b", "ge0.b", "lt0.b", "ne0.b", "le0.b", "alw.b",
- "nev.h", "gt0.h", "eq0.h", "ge0.h", "lt0.h", "ne0.h", "le0.h", "alw.h",
- "nev.w", "gt0.w", "eq0.w", "ge0.w", "lt0.w", "ne0.w", "le0.w", "alw.w"
- };
- if (value < 24)
- {
- /* Found a value within range */
- (*info -> fprintf_func) (info -> stream, "%s", syms[value]);
- }
- else
- {
- /* Not in range, just print as decimal digit. */
- (*info -> fprintf_func) (info -> stream, "%ld", value);
- }
- }
- else if ((operand -> flags & TIC80_OPERAND_CR) != 0)
- {
- char *tmp;
- switch (value)
- {
- case 0: tmp = "EPC"; break;
- case 1: tmp = "EIP"; break;
- case 2: tmp = "CONFIG"; break;
- case 4: tmp = "INTPEN"; break;
- case 6: tmp = "IE"; break;
- case 8: tmp = "FPST"; break;
- case 0xA: tmp = "PPERROR"; break;
- case 0xD: tmp = "PKTREQ"; break;
- case 0xE: tmp = "TCOUNT"; break;
- case 0xF: tmp = "TSCALE"; break;
- case 0x10: tmp = "FLTOP"; break;
- case 0x11: tmp = "FLTADR"; break;
- case 0x12: tmp = "FLTTAG"; break;
- case 0x13: tmp = "FLTDTL"; break;
- case 0x14: tmp = "FLTDTH"; break;
- case 0x20: tmp = "SYSSTK"; break;
- case 0x21: tmp = "SYSTMP"; break;
- case 0x30: tmp = "MPC"; break;
- case 0x31: tmp = "MIP"; break;
- case 0x33: tmp = "ECOMCNTL"; break;
- case 0x34: tmp = "ANASTAT"; break;
- case 0x39: tmp = "BRK1"; break;
- case 0x3A: tmp = "BRK2"; break;
- case 0x200: tmp = "ITAG0"; break;
- case 0x201: tmp = "ITAG1"; break;
- case 0x202: tmp = "ITAG2"; break;
- case 0x203: tmp = "ITAG3"; break;
- case 0x204: tmp = "ITAG4"; break;
- case 0x205: tmp = "ITAG5"; break;
- case 0x206: tmp = "ITAG6"; break;
- case 0x207: tmp = "ITAG7"; break;
- case 0x208: tmp = "ITAG8"; break;
- case 0x209: tmp = "ITAG9"; break;
- case 0x20A: tmp = "ITAG10"; break;
- case 0x20B: tmp = "ITAG11"; break;
- case 0x20C: tmp = "ITAG12"; break;
- case 0x20D: tmp = "ITAG13"; break;
- case 0x20E: tmp = "ITAG14"; break;
- case 0x20F: tmp = "ITAG15"; break;
- case 0x300: tmp = "ILRU"; break;
- case 0x400: tmp = "DTAG0"; break;
- case 0x401: tmp = "DTAG1"; break;
- case 0x402: tmp = "DTAG2"; break;
- case 0x403: tmp = "DTAG3"; break;
- case 0x404: tmp = "DTAG4"; break;
- case 0x405: tmp = "DTAG5"; break;
- case 0x406: tmp = "DTAG6"; break;
- case 0x407: tmp = "DTAG7"; break;
- case 0x408: tmp = "DTAG8"; break;
- case 0x409: tmp = "DTAG9"; break;
- case 0x40A: tmp = "DTAG10"; break;
- case 0x40B: tmp = "DTAG11"; break;
- case 0x40C: tmp = "DTAG12"; break;
- case 0x40D: tmp = "DTAG13"; break;
- case 0x40E: tmp = "DTAG14"; break;
- case 0x40F: tmp = "DTAG15"; break;
- case 0x500: tmp = "DLRU"; break;
- case 0x4000: tmp = "IN0P"; break;
- case 0x4001: tmp = "IN1P"; break;
- case 0x4002: tmp = "OUTP"; break;
- default: tmp = NULL; break;
- }
- if (tmp != NULL)
- {
- (*info -> fprintf_func) (info -> stream, "%s", tmp);
- }
- else
- {
- (*info -> fprintf_func) (info -> stream, "%#lx", value);
- }
- }
- else if ((operand -> flags & TIC80_OPERAND_FLOAT) != 0)
- {
- /* FIXME: depends upon sizeof (long) == sizeof (float) */
- union { float f; long l; } fval;
+ /* If we printed an open paren before printing this operand, close
+ it now. The flag gets reset on each loop. */
- fval.l = value;
- (*info -> fprintf_func) (info -> stream, "%g", fval.f);
- }
- else
- {
- if ((value > 999 || value < -999)
- || operand -> flags & TIC80_OPERAND_BITFIELD)
- {
- (*info -> fprintf_func) (info -> stream, "%#lx", value);
- }
- else
- {
- (*info -> fprintf_func) (info -> stream, "%ld", value);
- }
- }
+ if (close_paren)
+ {
+ (*info -> fprintf_func) (info -> stream, ")");
+ }
+ }
+ return (length);
+}
- /* If this is a scaled operand, then print the modifier */
+\f
- if (R_SCALED (insn[0], operand))
- {
- (*info -> fprintf_func) (info -> stream, ":s");
- }
+/* There are no specific bits that tell us for certain whether a vector
+ instruction opcode contains one or two instructions. However since
+ a destination register of r0 is illegal, we can check for nonzero
+ values in both destination register fields. Only opcodes that have
+ two valid instructions will have non-zero in both */
- /* If we printed an open paren before printing this operand, close
- it now. The flag gets reset on each loop. */
+#define TWO_INSN(insn) ((((insn) & (0x1F << 27)) != 0) && (((insn) & (0x1F << 22)) != 0))
- if (close_paren)
- {
- (*info -> fprintf_func) (info -> stream, ")");
- }
+static int
+print_instruction (info, memaddr, insn, vec_opcode)
+ struct disassemble_info *info;
+ bfd_vma memaddr;
+ unsigned long insn;
+ const struct tic80_opcode *vec_opcode;
+{
+ const struct tic80_opcode *opcode;
+ const struct tic80_opcode *opcode_end;
+
+ /* Find the first opcode match in the opcodes table. For vector
+ opcodes (vec_opcode != NULL) find the first match that is not the
+ previously found match. FIXME: there should be faster ways to
+ search (hash table or binary search), but don't worry too much
+ about it until other TIc80 support is finished. */
+
+ opcode_end = tic80_opcodes + tic80_num_opcodes;
+ for (opcode = tic80_opcodes; opcode < opcode_end; opcode++)
+ {
+ if ((insn & opcode -> mask) == opcode -> opcode &&
+ opcode != vec_opcode)
+ {
+ break;
}
}
+ if (opcode == opcode_end)
+ {
+ /* No match found, just print the bits as a .word directive */
+ (*info -> fprintf_func) (info -> stream, ".word %#08lx", insn);
+ }
+ else
+ {
+ /* Match found, decode the instruction. */
+ length = print_one_instruction (info, memaddr, insn, opcode);
+ if (opcode -> flags & TIC80_VECTOR && vec_opcode == NULL && TWO_INSN (insn))
+ {
+ /* There is another instruction to print from the same opcode.
+ Print the separator and then find and print the other
+ instruction. */
+ (*info -> fprintf_func) (info -> stream, " || ");
+ length = print_instruction (info, memaddr, insn, opcode);
+ }
+ }
return (length);
}
+
+/* Get the next 32 bit word from the instruction stream and convert it
+ into internal format in the unsigned long INSN, for which we are
+ passed the address. Return 0 on success, -1 on error. */
+
+static int
+fill_instruction (info, memaddr, insnp)
+ struct disassemble_info *info;
+ bfd_vma memaddr;
+ unsigned long *insnp;
+{
+ bfd_byte buffer[4];
+ int status;
+
+ /* Get the bits for the next 32 bit word and put in buffer */
+
+ status = (*info -> read_memory_func) (memaddr + length, buffer, 4, info);
+ if (status != 0)
+ {
+ (*info -> memory_error_func) (status, memaddr, info);
+ return (-1);
+ }
+
+ /* Read was successful, so increment count of bytes read and convert
+ the bits into internal format. */
+
+ length += 4;
+ if (info -> endian == BFD_ENDIAN_LITTLE)
+ {
+ *insnp = bfd_getl32 (buffer);
+ }
+ else if (info -> endian == BFD_ENDIAN_BIG)
+ {
+ *insnp = bfd_getb32 (buffer);
+ }
+ else
+ {
+ /* FIXME: Should probably just default to one or the other */
+ abort ();
+ }
+ return (0);
+}
+
+\f
+int
+print_insn_tic80 (memaddr, info)
+ bfd_vma memaddr;
+ struct disassemble_info *info;
+{
+ unsigned long insn;
+ int status;
+
+ length = 0;
+ status = fill_instruction (info, memaddr, &insn);
+ if (status != -1)
+ {
+ status = print_instruction (info, memaddr, insn, NULL);
+ }
+ return (status);
+}
projects / platform / upstream / binutils.git / commitdiff