Wed Feb 14 19:01:27 1996 Alan Modra <alan@spri.levels.unisa.edu.au>
* i386-dis.c (onebyte_has_modrm): New static array. (twobyte_has_modrm): New static array. (print_insn_i386): Only fetch the mod/reg/rm byte if it is needed.
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Wed Feb 14 19:01:27 1996 Alan Modra <alan@spri.levels.unisa.edu.au>
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* i386-dis.c (onebyte_has_modrm): New static array.
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(twobyte_has_modrm): New static array.
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(print_insn_i386): Only fetch the mod/reg/rm byte if it is needed.
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Tue Feb 13 15:15:01 1996 Ian Lance Taylor <ian@cygnus.com>
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* Makefile.in ($(SHLINK)): Check ts against $(SHLIB), not
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$(SHLINK).
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Mon Feb 12 16:26:06 1996 Michael Meissner <meissner@tiktok.cygnus.com>
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* ppc-opc.c (PPC): Undef, so default defination on Windows NT
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@ -348,23 +348,23 @@ struct dis386 dis386[] = {
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{ "outsb", indirDX, Xb },
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{ "outsS", indirDX, Xv },
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/* 70 */
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{ "jo", Jb },
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{ "jo", Jb },
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{ "jno", Jb },
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{ "jb", Jb },
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{ "jb", Jb },
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{ "jae", Jb },
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{ "je", Jb },
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{ "je", Jb },
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{ "jne", Jb },
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{ "jbe", Jb },
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{ "ja", Jb },
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{ "ja", Jb },
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/* 78 */
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{ "js", Jb },
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{ "js", Jb },
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{ "jns", Jb },
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{ "jp", Jb },
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{ "jp", Jb },
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{ "jnp", Jb },
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{ "jl", Jb },
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{ "jl", Jb },
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{ "jnl", Jb },
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{ "jle", Jb },
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{ "jg", Jb },
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{ "jg", Jb },
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/* 80 */
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{ GRP1b },
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{ GRP1S },
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@ -685,6 +685,44 @@ struct dis386 dis386_twobyte[] = {
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{ "(bad)" }, { "(bad)" }, { "(bad)" }, { "(bad)" },
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};
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static const unsigned char onebyte_has_modrm[256] = {
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1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
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1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
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1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
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1,1,1,1,0,0,0,0,1,1,1,1,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,1,1,0,0,0,0,0,1,0,1,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,0,0,1,1,1,1,0,0,0,0,0,0,0,0,
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1,1,1,1,0,0,0,0,1,1,1,1,1,1,1,1,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,1,1,0,0,0,0,0,0,1,1
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};
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static const unsigned char twobyte_has_modrm[256] = {
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1,1,1,1,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
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0,0,0,1,1,1,1,1,0,0,0,1,1,1,1,1,
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1,1,1,1,1,1,1,1,0,0,1,1,1,1,1,1,
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1,1,1,1,1,1,1,1,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
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0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
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};
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static char obuf[100];
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static char *obufp;
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static char scratchbuf[100];
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@ -993,6 +1031,7 @@ print_insn_i386 (pc, info)
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int enter_instruction;
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char *first, *second, *third;
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int needcomma;
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unsigned char need_modrm;
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struct dis_private priv;
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bfd_byte *inbuf = priv.the_buffer;
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@ -1058,20 +1097,22 @@ print_insn_i386 (pc, info)
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{
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FETCH_DATA (info, codep + 2);
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dp = &dis386_twobyte[*++codep];
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need_modrm = twobyte_has_modrm[*codep];
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}
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else
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dp = &dis386[*codep];
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{
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dp = &dis386[*codep];
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need_modrm = onebyte_has_modrm[*codep];
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}
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codep++;
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/* Fetch the mod/reg/rm byte. FIXME: We should be only fetching
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this if we need it. As it is, this code loses if there is a
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one-byte instruction (without a mod/reg/rm byte) at the end of
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the address space. */
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FETCH_DATA (info, codep + 1);
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mod = (*codep >> 6) & 3;
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reg = (*codep >> 3) & 7;
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rm = *codep & 7;
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if (need_modrm)
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{
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FETCH_DATA (info, codep + 1);
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mod = (*codep >> 6) & 3;
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reg = (*codep >> 3) & 7;
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rm = *codep & 7;
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}
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if (dp->name == NULL && dp->bytemode1 == FLOATCODE)
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{
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