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* cgen asm/disasm

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[opcodes/ChangeLog]
2001-05-07  Frank Ch. Eigler  <fche@redhat.com>

        * cgen-dis.in (default_print_insn): Tolerate min<base instructions
        even at end of a section.
        * cgen-ibld.in (extract_normal): Tolerate min!=base!=max instructions
        by ignoring precariously-unpacked insn_value in favor of raw buffer.

[cgen/ChangeLog]
2001-05-07  Frank Ch. Eigler  <fche@redhat.com>

        * iformat.scm (compute-insn-base-mask-length): Rewrite to tolerate
        various-base-length instruction sets.
This commit is contained in:
Frank Ch. Eigler 2001-05-07 17:55:21 +00:00
parent e00bc6a7ba
commit a00ad97d61
3 changed files with 21 additions and 5 deletions
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7
opcodes/ChangeLog
View File

@ -1,3 +1,10 @@
2001-05-07 Frank Ch. Eigler <fche@redhat.com>
* cgen-dis.in (default_print_insn): Tolerate min<base instructions
even at end of a section.
* cgen-ibld.in (extract_normal): Tolerate min!=base!=max instructions
by ignoring precariously-unpacked insn_value in favor of raw buffer.
2001-05-03 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de> 2001-05-03 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
* disassemble.c (disassembler_usage): Remove unused attribute. * disassemble.c (disassembler_usage): Remove unused attribute.

15
opcodes/cgen-dis.in
View File

@ -334,18 +334,27 @@ default_print_insn (cd, pc, info)
disassemble_info *info; disassemble_info *info;
{ {
char buf[CGEN_MAX_INSN_SIZE]; char buf[CGEN_MAX_INSN_SIZE];
int buflen;
int status; int status;
/* Read the base part of the insn. */ /* Attempt to read the base part of the insn. */
buflen = cd->base_insn_bitsize / 8;
status = (*info->read_memory_func) (pc, buf, buflen, info);
/* Try again with the minimum part, if min < base. */
if (status != 0 && (cd->min_insn_bitsize < cd->base_insn_bitsize))
{
buflen = cd->min_insn_bitsize / 8;
status = (*info->read_memory_func) (pc, buf, buflen, info);
}
status = (*info->read_memory_func) (pc, buf, cd->base_insn_bitsize / 8, info);
if (status != 0) if (status != 0)
{ {
(*info->memory_error_func) (status, pc, info); (*info->memory_error_func) (status, pc, info);
return -1; return -1;
} }
return print_insn (cd, pc, info, buf, cd->base_insn_bitsize / 8); return print_insn (cd, pc, info, buf, buflen);
} }
/* Main entry point. /* Main entry point.

4
opcodes/cgen-ibld.in
View File

@ -428,9 +428,9 @@ extract_normal (cd, ex_info, insn_value, attrs, word_offset, start, length,
word_length = total_length; word_length = total_length;
} }
/* Does the value reside in INSN_VALUE? */ /* Does the value reside in INSN_VALUE, and at the right alignment? */
if (CGEN_INT_INSN_P || word_offset == 0) if (CGEN_INT_INSN_P || (word_offset == 0 && word_length == total_length))
{ {
if (CGEN_INSN_LSB0_P) if (CGEN_INSN_LSB0_P)
value = insn_value >> ((word_offset + start + 1) - length); value = insn_value >> ((word_offset + start + 1) - length);