* m68k-dis.c: Rewrite to remove use of setjmp/longjmp.
This commit is contained in:
Nick Clifton
parent
20359e080a
commit
62443ade10
2 changed files with 252 additions and 168 deletions
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@ -1,3 +1,7 @@
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2008-11-25 Nick Clifton <nickc@redhat.com>
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* m68k-dis.c: Rewrite to remove use of setjmp/longjmp.
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2008-11-18 Catherine Moore <clm@codesourcery.com>
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* arm-dis.c (coprocessor_opcodes): Add half-precision vcvt
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@ -60,46 +60,103 @@ static char *const reg_half_names[] =
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#endif
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/* Get a 1 byte signed integer. */
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#define NEXTBYTE(p) (p += 2, FETCH_DATA (info, p), COERCE_SIGNED_CHAR(p[-1]))
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#define NEXTBYTE(p, val) \
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do \
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{ \
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p += 2; \
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if (FETCH_DATA (info, p) < 0) \
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return -3; \
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val = COERCE_SIGNED_CHAR (p[-1]); \
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} \
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while (0)
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/* Get a 2 byte signed integer. */
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#define COERCE16(x) ((int) (((x) ^ 0x8000) - 0x8000))
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#define NEXTWORD(p) \
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(p += 2, FETCH_DATA (info, p), \
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COERCE16 ((p[-2] << 8) + p[-1]))
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#define NEXTWORD(p, val, ret_val) \
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do \
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{ \
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p += 2; \
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if (FETCH_DATA (info, p) < 0) \
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return ret_val; \
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val = COERCE16 ((p[-2] << 8) + p[-1]); \
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} \
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while (0)
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/* Get a 4 byte signed integer. */
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#define COERCE32(x) ((bfd_signed_vma) ((x) ^ 0x80000000) - 0x80000000)
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#define NEXTLONG(p) \
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(p += 4, FETCH_DATA (info, p), \
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(COERCE32 ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1])))
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#define NEXTLONG(p, val, ret_val) \
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do \
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{ \
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p += 4; \
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if (FETCH_DATA (info, p) < 0) \
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return ret_val; \
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val = COERCE32 ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]); \
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} \
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while (0)
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/* Get a 4 byte unsigned integer. */
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#define NEXTULONG(p) \
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(p += 4, FETCH_DATA (info, p), \
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(unsigned int) ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]))
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#define NEXTULONG(p, val) \
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do \
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{ \
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p += 4; \
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if (FETCH_DATA (info, p) < 0) \
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return -3; \
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val = (unsigned int) ((((((p[-4] << 8) + p[-3]) << 8) + p[-2]) << 8) + p[-1]); \
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} \
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while (0)
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/* Get a single precision float. */
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#define NEXTSINGLE(val, p) \
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(p += 4, FETCH_DATA (info, p), \
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floatformat_to_double (&floatformat_ieee_single_big, (char *) p - 4, &val))
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#define NEXTSINGLE(val, p) \
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do \
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{ \
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p += 4; \
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if (FETCH_DATA (info, p) < 0) \
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return -3; \
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floatformat_to_double (& floatformat_ieee_single_big, \
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(char *) p - 4, & val); \
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} \
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while (0)
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/* Get a double precision float. */
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#define NEXTDOUBLE(val, p) \
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(p += 8, FETCH_DATA (info, p), \
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floatformat_to_double (&floatformat_ieee_double_big, (char *) p - 8, &val))
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#define NEXTDOUBLE(val, p) \
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do \
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{ \
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p += 8; \
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if (FETCH_DATA (info, p) , 0) \
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return -3; \
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floatformat_to_double (& floatformat_ieee_double_big, \
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(char *) p - 8, & val); \
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} \
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while (0)
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/* Get an extended precision float. */
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#define NEXTEXTEND(val, p) \
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(p += 12, FETCH_DATA (info, p), \
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floatformat_to_double (&floatformat_m68881_ext, (char *) p - 12, &val))
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#define NEXTEXTEND(val, p) \
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do \
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{ \
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p += 12; \
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if (FETCH_DATA (info, p) < 0) \
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return -3; \
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floatformat_to_double (& floatformat_m68881_ext, \
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(char *) p - 12, & val); \
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} \
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while (0)
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/* Need a function to convert from packed to double
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precision. Actually, it's easier to print a
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packed number than a double anyway, so maybe
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there should be a special case to handle this... */
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#define NEXTPACKED(p) \
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(p += 12, FETCH_DATA (info, p), 0.0)
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#define NEXTPACKED(p, val) \
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do \
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{ \
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p += 12; \
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if (FETCH_DATA (info, p) < 0) \
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return -3; \
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val = 0.0; \
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} \
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while (0)
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/* Maximum length of an instruction. */
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#define MAXLEN 22
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@ -112,12 +169,13 @@ struct private
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bfd_byte *max_fetched;
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bfd_byte the_buffer[MAXLEN];
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bfd_vma insn_start;
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jmp_buf bailout;
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};
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static fprintf_ftype save_printer;
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static void (* save_print_address) (bfd_vma, struct disassemble_info *);
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/* Make sure that bytes from INFO->PRIVATE_DATA->BUFFER (inclusive)
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to ADDR (exclusive) are valid. Returns 1 for success, longjmps
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on error. */
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to ADDR (exclusive) are valid. Returns 1 for success, 0 on error. */
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#define FETCH_DATA(info, addr) \
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((addr) <= ((struct private *) (info->private_data))->max_fetched \
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? 1 : fetch_data ((info), (addr)))
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@ -136,7 +194,9 @@ fetch_data (struct disassemble_info *info, bfd_byte *addr)
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if (status != 0)
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{
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(*info->memory_error_func) (status, start, info);
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longjmp (priv->bailout, 1);
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info->fprintf_func = save_printer;
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info->print_address_func = save_print_address;
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return 0;
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}
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else
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priv->max_fetched = addr;
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@ -161,7 +221,8 @@ dummy_print_address (bfd_vma vma ATTRIBUTE_UNUSED,
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/* Fetch BITS bits from a position in the instruction specified by CODE.
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CODE is a "place to put an argument", or 'x' for a destination
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that is a general address (mode and register).
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BUFFER contains the instruction. */
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BUFFER contains the instruction.
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Returns -1 on failure. */
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static int
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fetch_arg (unsigned char *buffer,
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@ -216,64 +277,75 @@ fetch_arg (unsigned char *buffer,
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break;
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case 'k':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[3] >> 4);
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break;
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case 'C':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = buffer[3];
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break;
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case '1':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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val >>= 12;
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break;
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case '2':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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val >>= 6;
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break;
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case '3':
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case 'j':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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break;
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case '4':
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FETCH_DATA (info, buffer + 5);
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if (! FETCH_DATA (info, buffer + 5))
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return -1;
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val = (buffer[4] << 8) + buffer[5];
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val >>= 12;
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break;
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case '5':
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FETCH_DATA (info, buffer + 5);
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if (! FETCH_DATA (info, buffer + 5))
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return -1;
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val = (buffer[4] << 8) + buffer[5];
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val >>= 6;
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break;
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case '6':
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FETCH_DATA (info, buffer + 5);
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if (! FETCH_DATA (info, buffer + 5))
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return -1;
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val = (buffer[4] << 8) + buffer[5];
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break;
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case '7':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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val >>= 7;
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break;
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case '8':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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val >>= 10;
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break;
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case '9':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] << 8) + buffer[3];
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val >>= 5;
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break;
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@ -283,7 +355,8 @@ fetch_arg (unsigned char *buffer,
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break;
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case 'E':
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FETCH_DATA (info, buffer + 3);
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if (! FETCH_DATA (info, buffer + 3))
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return -1;
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val = (buffer[2] >> 1);
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break;
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@ -450,7 +523,8 @@ print_base (int regno, bfd_vma disp, disassemble_info *info)
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/* Print an indexed argument. The base register is BASEREG (-1 for pc).
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P points to extension word, in buffer.
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ADDR is the nominal core address of that extension word. */
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ADDR is the nominal core address of that extension word.
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Returns NULL upon error. */
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static unsigned char *
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print_indexed (int basereg,
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@ -465,7 +539,7 @@ print_indexed (int basereg,
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char buf[40];
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char vmabuf[50];
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word = NEXTWORD (p);
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NEXTWORD (p, word, NULL);
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/* Generate the text for the index register.
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Where this will be output is not yet determined. */
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@ -503,10 +577,10 @@ print_indexed (int basereg,
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switch ((word >> 4) & 3)
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{
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case 2:
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base_disp = NEXTWORD (p);
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NEXTWORD (p, base_disp, NULL);
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break;
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case 3:
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base_disp = NEXTLONG (p);
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NEXTLONG (p, base_disp, NULL);
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}
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if (basereg == -1)
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base_disp += addr;
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@ -526,10 +600,10 @@ print_indexed (int basereg,
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switch (word & 3)
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{
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case 2:
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outer_disp = NEXTWORD (p);
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NEXTWORD (p, outer_disp, NULL);
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break;
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case 3:
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outer_disp = NEXTLONG (p);
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NEXTLONG (p, outer_disp, NULL);
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}
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print_base (basereg, base_disp, info);
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@ -547,9 +621,18 @@ print_indexed (int basereg,
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return p;
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}
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#define FETCH_ARG(size, val) \
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do \
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{ \
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val = fetch_arg (buffer, place, size, info); \
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if (val < 0) \
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return -3; \
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} \
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while (0)
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/* Returns number of bytes "eaten" by the operand, or
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return -1 if an invalid operand was found, or -2 if
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an opcode tabe error was found.
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an opcode tabe error was found or -3 to simply abort.
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ADDR is the pc for this arg to be relative to. */
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static int
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@ -575,23 +658,21 @@ print_insn_arg (const char *d,
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case 'c': /* Cache identifier. */
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{
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static char *const cacheFieldName[] = { "nc", "dc", "ic", "bc" };
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val = fetch_arg (buffer, place, 2, info);
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(*info->fprintf_func) (info->stream, cacheFieldName[val]);
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FETCH_ARG (2, val);
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(*info->fprintf_func) (info->stream, cacheFieldName[val]);
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break;
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}
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case 'a': /* Address register indirect only. Cf. case '+'. */
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{
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(*info->fprintf_func)
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(info->stream,
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"%s@",
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reg_names[fetch_arg (buffer, place, 3, info) + 8]);
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FETCH_ARG (3, val);
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(*info->fprintf_func) (info->stream, "%s@", reg_names[val + 8]);
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break;
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}
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case '_': /* 32-bit absolute address for move16. */
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{
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uval = NEXTULONG (p);
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NEXTULONG (p, uval);
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(*info->print_address_func) (uval, info);
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break;
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}
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@ -643,7 +724,7 @@ print_insn_arg (const char *d,
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/* Fido added these. */
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{"%cac", 0xffe}, {"%mbo", 0xfff}};
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val = fetch_arg (buffer, place, 12, info);
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FETCH_ARG (12, val);
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for (regno = sizeof names / sizeof names[0] - 1; regno >= 0; regno--)
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if (names[regno].value == val)
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{
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@ -656,7 +737,7 @@ print_insn_arg (const char *d,
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break;
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case 'Q':
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val = fetch_arg (buffer, place, 3, info);
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FETCH_ARG (3, val);
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/* 0 means 8, except for the bkpt instruction... */
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if (val == 0 && d[1] != 's')
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val = 8;
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@ -664,7 +745,7 @@ print_insn_arg (const char *d,
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break;
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case 'x':
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val = fetch_arg (buffer, place, 3, info);
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FETCH_ARG (3, val);
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/* 0 means -1. */
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if (val == 0)
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val = -1;
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@ -672,12 +753,12 @@ print_insn_arg (const char *d,
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break;
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case 'j':
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val = fetch_arg (buffer, place, 3, info);
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FETCH_ARG (3, val);
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(*info->fprintf_func) (info->stream, "#%d", val+1);
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break;
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case 'K':
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val = fetch_arg (buffer, place, 9, info);
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FETCH_ARG (9, val);
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(*info->fprintf_func) (info->stream, "#%d", val);
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break;
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@ -685,12 +766,13 @@ print_insn_arg (const char *d,
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if (place == 'h')
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{
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static char *const scalefactor_name[] = { "<<", ">>" };
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val = fetch_arg (buffer, place, 1, info);
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FETCH_ARG (1, val);
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(*info->fprintf_func) (info->stream, scalefactor_name[val]);
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}
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else
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{
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val = fetch_arg (buffer, place, 8, info);
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FETCH_ARG (8, val);
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if (val & 0x80)
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val = val - 0x100;
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(*info->fprintf_func) (info->stream, "#%d", val);
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@ -698,29 +780,27 @@ print_insn_arg (const char *d,
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break;
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case 'T':
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val = fetch_arg (buffer, place, 4, info);
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FETCH_ARG (4, val);
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(*info->fprintf_func) (info->stream, "#%d", val);
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break;
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case 'D':
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(*info->fprintf_func) (info->stream, "%s",
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reg_names[fetch_arg (buffer, place, 3, info)]);
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FETCH_ARG (3, val);
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(*info->fprintf_func) (info->stream, "%s", reg_names[val]);
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break;
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case 'A':
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(*info->fprintf_func)
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(info->stream, "%s",
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reg_names[fetch_arg (buffer, place, 3, info) + 010]);
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FETCH_ARG (3, val);
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(*info->fprintf_func) (info->stream, "%s", reg_names[val + 010]);
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break;
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case 'R':
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(*info->fprintf_func)
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(info->stream, "%s",
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reg_names[fetch_arg (buffer, place, 4, info)]);
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FETCH_ARG (4, val);
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(*info->fprintf_func) (info->stream, "%s", reg_names[val]);
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break;
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case 'r':
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regno = fetch_arg (buffer, place, 4, info);
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FETCH_ARG (4, regno);
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if (regno > 7)
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(*info->fprintf_func) (info->stream, "%s@", reg_names[regno]);
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||||
else
|
||||
|
|
@ -728,13 +808,12 @@ print_insn_arg (const char *d,
|
|||
break;
|
||||
|
||||
case 'F':
|
||||
(*info->fprintf_func)
|
||||
(info->stream, "%%fp%d",
|
||||
fetch_arg (buffer, place, 3, info));
|
||||
FETCH_ARG (3, val);
|
||||
(*info->fprintf_func) (info->stream, "%%fp%d", val);
|
||||
break;
|
||||
|
||||
case 'O':
|
||||
val = fetch_arg (buffer, place, 6, info);
|
||||
FETCH_ARG (6, val);
|
||||
if (val & 0x20)
|
||||
(*info->fprintf_func) (info->stream, "%s", reg_names[val & 7]);
|
||||
else
|
||||
|
|
@ -742,78 +821,78 @@ print_insn_arg (const char *d,
|
|||
break;
|
||||
|
||||
case '+':
|
||||
(*info->fprintf_func)
|
||||
(info->stream, "%s@+",
|
||||
reg_names[fetch_arg (buffer, place, 3, info) + 8]);
|
||||
FETCH_ARG (3, val);
|
||||
(*info->fprintf_func) (info->stream, "%s@+", reg_names[val + 8]);
|
||||
break;
|
||||
|
||||
case '-':
|
||||
(*info->fprintf_func)
|
||||
(info->stream, "%s@-",
|
||||
reg_names[fetch_arg (buffer, place, 3, info) + 8]);
|
||||
FETCH_ARG (3, val);
|
||||
(*info->fprintf_func) (info->stream, "%s@-", reg_names[val + 8]);
|
||||
break;
|
||||
|
||||
case 'k':
|
||||
if (place == 'k')
|
||||
(*info->fprintf_func)
|
||||
(info->stream, "{%s}",
|
||||
reg_names[fetch_arg (buffer, place, 3, info)]);
|
||||
{
|
||||
FETCH_ARG (3, val);
|
||||
(*info->fprintf_func) (info->stream, "{%s}", reg_names[val]);
|
||||
}
|
||||
else if (place == 'C')
|
||||
{
|
||||
val = fetch_arg (buffer, place, 7, info);
|
||||
FETCH_ARG (7, val);
|
||||
if (val > 63) /* This is a signed constant. */
|
||||
val -= 128;
|
||||
(*info->fprintf_func) (info->stream, "{#%d}", val);
|
||||
}
|
||||
else
|
||||
return -2;
|
||||
return -1;
|
||||
break;
|
||||
|
||||
case '#':
|
||||
case '^':
|
||||
p1 = buffer + (*d == '#' ? 2 : 4);
|
||||
if (place == 's')
|
||||
val = fetch_arg (buffer, place, 4, info);
|
||||
FETCH_ARG (4, val);
|
||||
else if (place == 'C')
|
||||
val = fetch_arg (buffer, place, 7, info);
|
||||
FETCH_ARG (7, val);
|
||||
else if (place == '8')
|
||||
val = fetch_arg (buffer, place, 3, info);
|
||||
FETCH_ARG (3, val);
|
||||
else if (place == '3')
|
||||
val = fetch_arg (buffer, place, 8, info);
|
||||
FETCH_ARG (8, val);
|
||||
else if (place == 'b')
|
||||
val = NEXTBYTE (p1);
|
||||
NEXTBYTE (p1, val);
|
||||
else if (place == 'w' || place == 'W')
|
||||
val = NEXTWORD (p1);
|
||||
NEXTWORD (p1, val, -3);
|
||||
else if (place == 'l')
|
||||
val = NEXTLONG (p1);
|
||||
NEXTLONG (p1, val, -3);
|
||||
else
|
||||
return -2;
|
||||
|
||||
(*info->fprintf_func) (info->stream, "#%d", val);
|
||||
break;
|
||||
|
||||
case 'B':
|
||||
if (place == 'b')
|
||||
disp = NEXTBYTE (p);
|
||||
NEXTBYTE (p, disp);
|
||||
else if (place == 'B')
|
||||
disp = COERCE_SIGNED_CHAR (buffer[1]);
|
||||
else if (place == 'w' || place == 'W')
|
||||
disp = NEXTWORD (p);
|
||||
NEXTWORD (p, disp, -3);
|
||||
else if (place == 'l' || place == 'L' || place == 'C')
|
||||
disp = NEXTLONG (p);
|
||||
NEXTLONG (p, disp, -3);
|
||||
else if (place == 'g')
|
||||
{
|
||||
disp = NEXTBYTE (buffer);
|
||||
NEXTBYTE (buffer, disp);
|
||||
if (disp == 0)
|
||||
disp = NEXTWORD (p);
|
||||
NEXTWORD (p, disp, -3);
|
||||
else if (disp == -1)
|
||||
disp = NEXTLONG (p);
|
||||
NEXTLONG (p, disp, -3);
|
||||
}
|
||||
else if (place == 'c')
|
||||
{
|
||||
if (buffer[1] & 0x40) /* If bit six is one, long offset. */
|
||||
disp = NEXTLONG (p);
|
||||
NEXTLONG (p, disp, -3);
|
||||
else
|
||||
disp = NEXTWORD (p);
|
||||
NEXTWORD (p, disp, -3);
|
||||
}
|
||||
else
|
||||
return -2;
|
||||
|
|
@ -822,29 +901,32 @@ print_insn_arg (const char *d,
|
|||
break;
|
||||
|
||||
case 'd':
|
||||
val = NEXTWORD (p);
|
||||
(*info->fprintf_func)
|
||||
(info->stream, "%s@(%d)",
|
||||
reg_names[fetch_arg (buffer, place, 3, info) + 8], val);
|
||||
break;
|
||||
{
|
||||
int val1;
|
||||
|
||||
NEXTWORD (p, val, -3);
|
||||
FETCH_ARG (3, val1);
|
||||
(*info->fprintf_func) (info->stream, "%s@(%d)", reg_names[val1 + 8], val);
|
||||
break;
|
||||
}
|
||||
|
||||
case 's':
|
||||
(*info->fprintf_func) (info->stream, "%s",
|
||||
fpcr_names[fetch_arg (buffer, place, 3, info)]);
|
||||
FETCH_ARG (3, val);
|
||||
(*info->fprintf_func) (info->stream, "%s", fpcr_names[val]);
|
||||
break;
|
||||
|
||||
case 'e':
|
||||
val = fetch_arg(buffer, place, 2, info);
|
||||
FETCH_ARG (2, val);
|
||||
(*info->fprintf_func) (info->stream, "%%acc%d", val);
|
||||
break;
|
||||
|
||||
case 'g':
|
||||
val = fetch_arg(buffer, place, 1, info);
|
||||
(*info->fprintf_func) (info->stream, "%%accext%s", val==0 ? "01" : "23");
|
||||
FETCH_ARG (1, val);
|
||||
(*info->fprintf_func) (info->stream, "%%accext%s", val == 0 ? "01" : "23");
|
||||
break;
|
||||
|
||||
case 'i':
|
||||
val = fetch_arg(buffer, place, 2, info);
|
||||
FETCH_ARG (2, val);
|
||||
if (val == 1)
|
||||
(*info->fprintf_func) (info->stream, "<<");
|
||||
else if (val == 3)
|
||||
|
|
@ -856,7 +938,8 @@ print_insn_arg (const char *d,
|
|||
case 'I':
|
||||
/* Get coprocessor ID... */
|
||||
val = fetch_arg (buffer, 'd', 3, info);
|
||||
|
||||
if (val < 0)
|
||||
return -3;
|
||||
if (val != 1) /* Unusual coprocessor ID? */
|
||||
(*info->fprintf_func) (info->stream, "(cpid=%d) ", val);
|
||||
break;
|
||||
|
|
@ -888,10 +971,16 @@ print_insn_arg (const char *d,
|
|||
if (place == 'd')
|
||||
{
|
||||
val = fetch_arg (buffer, 'x', 6, info);
|
||||
if (val < 0)
|
||||
return -3;
|
||||
val = ((val & 7) << 3) + ((val >> 3) & 7);
|
||||
}
|
||||
else
|
||||
val = fetch_arg (buffer, 's', 6, info);
|
||||
{
|
||||
val = fetch_arg (buffer, 's', 6, info);
|
||||
if (val < 0)
|
||||
return -3;
|
||||
}
|
||||
|
||||
/* If the <ea> is invalid for *d, then reject this match. */
|
||||
if (!m68k_valid_ea (*d, val))
|
||||
|
|
@ -923,29 +1012,31 @@ print_insn_arg (const char *d,
|
|||
break;
|
||||
|
||||
case 5:
|
||||
val = NEXTWORD (p);
|
||||
NEXTWORD (p, val, -3);
|
||||
(*info->fprintf_func) (info->stream, "%s@(%d)", regname, val);
|
||||
break;
|
||||
|
||||
case 6:
|
||||
p = print_indexed (regno, p, addr, info);
|
||||
if (p == NULL)
|
||||
return -3;
|
||||
break;
|
||||
|
||||
case 7:
|
||||
switch (val & 7)
|
||||
{
|
||||
case 0:
|
||||
val = NEXTWORD (p);
|
||||
NEXTWORD (p, val, -3);
|
||||
(*info->print_address_func) (val, info);
|
||||
break;
|
||||
|
||||
case 1:
|
||||
uval = NEXTULONG (p);
|
||||
NEXTULONG (p, uval);
|
||||
(*info->print_address_func) (uval, info);
|
||||
break;
|
||||
|
||||
case 2:
|
||||
val = NEXTWORD (p);
|
||||
NEXTWORD (p, val, -3);
|
||||
(*info->fprintf_func) (info->stream, "%%pc@(");
|
||||
(*info->print_address_func) (addr + val, info);
|
||||
(*info->fprintf_func) (info->stream, ")");
|
||||
|
|
@ -953,6 +1044,8 @@ print_insn_arg (const char *d,
|
|||
|
||||
case 3:
|
||||
p = print_indexed (-1, p, addr, info);
|
||||
if (p == NULL)
|
||||
return -3;
|
||||
break;
|
||||
|
||||
case 4:
|
||||
|
|
@ -960,17 +1053,17 @@ print_insn_arg (const char *d,
|
|||
switch (place)
|
||||
{
|
||||
case 'b':
|
||||
val = NEXTBYTE (p);
|
||||
NEXTBYTE (p, val);
|
||||
flt_p = 0;
|
||||
break;
|
||||
|
||||
case 'w':
|
||||
val = NEXTWORD (p);
|
||||
NEXTWORD (p, val, -3);
|
||||
flt_p = 0;
|
||||
break;
|
||||
|
||||
case 'l':
|
||||
val = NEXTLONG (p);
|
||||
NEXTLONG (p, val, -3);
|
||||
flt_p = 0;
|
||||
break;
|
||||
|
||||
|
|
@ -987,7 +1080,7 @@ print_insn_arg (const char *d,
|
|||
break;
|
||||
|
||||
case 'p':
|
||||
flval = NEXTPACKED (p);
|
||||
NEXTPACKED (p, flval);
|
||||
break;
|
||||
|
||||
default:
|
||||
|
|
@ -1009,7 +1102,7 @@ print_insn_arg (const char *d,
|
|||
mask bit and if set, add a '&' to the arg. */
|
||||
if (place == '/')
|
||||
{
|
||||
val = fetch_arg (buffer, place, 1, info);
|
||||
FETCH_ARG (1, val);
|
||||
if (val)
|
||||
info->fprintf_func (info->stream, "&");
|
||||
}
|
||||
|
|
@ -1021,7 +1114,7 @@ print_insn_arg (const char *d,
|
|||
{
|
||||
char doneany;
|
||||
p1 = buffer + 2;
|
||||
val = NEXTWORD (p1);
|
||||
NEXTWORD (p1, val, -3);
|
||||
/* Move the pointer ahead if this point is farther ahead
|
||||
than the last. */
|
||||
p = p1 > p ? p1 : p;
|
||||
|
|
@ -1062,7 +1155,8 @@ print_insn_arg (const char *d,
|
|||
{
|
||||
/* `fmovem' insn. */
|
||||
char doneany;
|
||||
val = fetch_arg (buffer, place, 8, info);
|
||||
|
||||
FETCH_ARG (8, val);
|
||||
if (val == 0)
|
||||
{
|
||||
(*info->fprintf_func) (info->stream, "#0");
|
||||
|
|
@ -1096,10 +1190,9 @@ print_insn_arg (const char *d,
|
|||
}
|
||||
else if (place == '8')
|
||||
{
|
||||
FETCH_ARG (3, val);
|
||||
/* fmoveml for FP status registers. */
|
||||
(*info->fprintf_func) (info->stream, "%s",
|
||||
fpcr_names[fetch_arg (buffer, place, 3,
|
||||
info)]);
|
||||
(*info->fprintf_func) (info->stream, "%s", fpcr_names[val]);
|
||||
}
|
||||
else
|
||||
return -2;
|
||||
|
|
@ -1115,9 +1208,10 @@ print_insn_arg (const char *d,
|
|||
case '2':
|
||||
case '3':
|
||||
{
|
||||
int val = fetch_arg (buffer, place, 5, info);
|
||||
int val;
|
||||
char *name = 0;
|
||||
|
||||
FETCH_ARG (5, val);
|
||||
switch (val)
|
||||
{
|
||||
case 2: name = "%tt0"; break;
|
||||
|
|
@ -1152,8 +1246,9 @@ print_insn_arg (const char *d,
|
|||
|
||||
case 'f':
|
||||
{
|
||||
int fc = fetch_arg (buffer, place, 5, info);
|
||||
int fc;
|
||||
|
||||
FETCH_ARG (5, fc);
|
||||
if (fc == 1)
|
||||
(*info->fprintf_func) (info->stream, "%%dfc");
|
||||
else if (fc == 0)
|
||||
|
|
@ -1170,8 +1265,9 @@ print_insn_arg (const char *d,
|
|||
|
||||
case 't':
|
||||
{
|
||||
int level = fetch_arg (buffer, place, 3, info);
|
||||
int level;
|
||||
|
||||
FETCH_ARG (3, level);
|
||||
(*info->fprintf_func) (info->stream, "%d", level);
|
||||
}
|
||||
break;
|
||||
|
|
@ -1179,8 +1275,9 @@ print_insn_arg (const char *d,
|
|||
case 'u':
|
||||
{
|
||||
short is_upper = 0;
|
||||
int reg = fetch_arg (buffer, place, 5, info);
|
||||
int reg;
|
||||
|
||||
FETCH_ARG (5, reg);
|
||||
if (reg & 0x10)
|
||||
{
|
||||
is_upper = 1;
|
||||
|
|
@ -1309,6 +1406,8 @@ match_insn_m68k (bfd_vma memaddr,
|
|||
info->print_address_func = save_print_address;
|
||||
return 0;
|
||||
}
|
||||
else if (eaten == -3)
|
||||
return 0;
|
||||
else
|
||||
{
|
||||
/* We must restore the print functions before trying to print the
|
||||
|
|
@ -1318,7 +1417,7 @@ match_insn_m68k (bfd_vma memaddr,
|
|||
info->fprintf_func (info->stream,
|
||||
/* xgettext:c-format */
|
||||
_("<internal error in opcode table: %s %s>\n"),
|
||||
best->name, best->args);
|
||||
best->name, best->args);
|
||||
return 2;
|
||||
}
|
||||
}
|
||||
|
|
@ -1439,6 +1538,8 @@ m68k_scan_mask (bfd_vma memaddr, disassemble_info *info,
|
|||
if (d[0] == 's' && d[1] == '8')
|
||||
{
|
||||
val = fetch_arg (buffer, d[1], 3, info);
|
||||
if (val < 0)
|
||||
return 0;
|
||||
if ((val & (val - 1)) != 0)
|
||||
break;
|
||||
}
|
||||
|
|
@ -1473,6 +1574,8 @@ m68k_scan_mask (bfd_vma memaddr, disassemble_info *info,
|
|||
int
|
||||
print_insn_m68k (bfd_vma memaddr, disassemble_info *info)
|
||||
{
|
||||
fprintf_ftype save_printer;
|
||||
void (* save_print_address) (bfd_vma, struct disassemble_info *);
|
||||
unsigned int arch_mask;
|
||||
struct private priv;
|
||||
int val;
|
||||
|
|
@ -1481,11 +1584,10 @@ print_insn_m68k (bfd_vma memaddr, disassemble_info *info)
|
|||
|
||||
/* Save these printing functions in case we need to restore them
|
||||
later. */
|
||||
fprintf_ftype save_printer = info->fprintf_func;
|
||||
void (* save_print_address) (bfd_vma, struct disassemble_info *)
|
||||
= info->print_address_func;
|
||||
save_printer = info->fprintf_func;
|
||||
save_print_address = info->print_address_func;
|
||||
|
||||
info->private_data = (PTR) &priv;
|
||||
info->private_data = & priv;
|
||||
/* Tell objdump to use two bytes per chunk
|
||||
and six bytes per line for displaying raw data. */
|
||||
info->bytes_per_chunk = 2;
|
||||
|
|
@ -1494,49 +1596,27 @@ print_insn_m68k (bfd_vma memaddr, disassemble_info *info)
|
|||
priv.max_fetched = priv.the_buffer;
|
||||
priv.insn_start = memaddr;
|
||||
|
||||
if (setjmp (priv.bailout) != 0)
|
||||
{
|
||||
/* longjmp may be called while these printing functions are
|
||||
temporarily replaced with dummy functions. Restore them
|
||||
before we leave.
|
||||
|
||||
Admittedly, this save-and-restore operation is somewhat ugly
|
||||
in that we are exposing the fact that match_insn_m68k
|
||||
temporarily replaces insn->fprintf_func and
|
||||
insn->print_address_func. Perhaps, a real fix is to report a
|
||||
FETCH_DATA failure with a return value of some sort, without
|
||||
using setjmp/longjmp. A better fix may be to teach the m68k
|
||||
disassembler do its job without temporarily replacing
|
||||
insn->fprintf_func and insn->print_address_func, but that's a
|
||||
task for another day. */
|
||||
info->fprintf_func = save_printer;
|
||||
info->print_address_func = save_print_address;
|
||||
|
||||
/* Error return. */
|
||||
return -1;
|
||||
}
|
||||
|
||||
arch_mask = bfd_m68k_mach_to_features (info->mach);
|
||||
if (!arch_mask)
|
||||
{
|
||||
/* First try printing an m680x0 instruction. Try printing a Coldfire
|
||||
one if that fails. */
|
||||
val = m68k_scan_mask (memaddr, info, m68k_mask);
|
||||
if (val)
|
||||
return val;
|
||||
|
||||
val = m68k_scan_mask (memaddr, info, mcf_mask);
|
||||
if (val)
|
||||
return val;
|
||||
if (val == 0)
|
||||
val = m68k_scan_mask (memaddr, info, mcf_mask);
|
||||
}
|
||||
else
|
||||
{
|
||||
val = m68k_scan_mask (memaddr, info, arch_mask);
|
||||
if (val)
|
||||
return val;
|
||||
}
|
||||
|
||||
/* Handle undefined instructions. */
|
||||
info->fprintf_func (info->stream, "0%o", (buffer[0] << 8) + buffer[1]);
|
||||
return 2;
|
||||
if (val == 0)
|
||||
/* Handle undefined instructions. */
|
||||
info->fprintf_func (info->stream, "0%o", (buffer[0] << 8) + buffer[1]);
|
||||
|
||||
/* Restore print functions. */
|
||||
info->fprintf_func = save_printer;
|
||||
info->print_address_func = save_print_address;
|
||||
|
||||
return val ? val : 2;
|
||||
}
|
||||
|
|
|
|||
Loading…
Add table
Reference in a new issue