Sort m68k opcodes into alphabetical order
This commit is contained in:
Nick Clifton
parent
1055df0f95
commit
60fed2d357
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@ -1,3 +1,9 @@
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2004-05-27 Peter Barada <peter@the-baradas.com>
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* config/tc-m68k.c (md_begin): Sort the opcode table into
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alphabetical order.
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(m68k_compare_opcode): New function to do the sorting.
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2004-05-24 Peter Barada <peter@the-baradas.com>
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* config/m68k-parse.y(operand): Allow for MAC/EMAC mask
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@ -130,6 +130,9 @@ static struct label_line *labels;
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static struct label_line *current_label;
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/* Pointer to list holding the opcodes sorted by name. */
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static struct m68k_opcode const ** m68k_sorted_opcodes;
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/* Its an arbitrary name: This means I don't approve of it.
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See flames below. */
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static struct obstack robyn;
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@ -4113,13 +4116,37 @@ md_assemble (str)
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}
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}
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void
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md_begin ()
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/* Comparison function used by qsort to rank the opcode entries by name. */
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static int
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m68k_compare_opcode (const void * v1, const void * v2)
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{
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/*
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* md_begin -- set up hash tables with 68000 instructions.
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* similar to what the vax assembler does. ---phr
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*/
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struct m68k_opcode * op1, * op2;
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int ret;
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op1 = *(struct m68k_opcode **) v1;
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op2 = *(struct m68k_opcode **) v2;
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/* Compare the two names. If different, return the comparison.
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If the same, return the order they are in the opcode table. */
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ret = strcmp (op1->name, op2->name);
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if (ret)
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return ret;
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if (op1 < op2)
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return -1;
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return 0;
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}
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void
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md_begin (void)
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{
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const struct m68k_opcode *ins;
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struct m68k_incant *hack, *slak;
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const char *retval = 0; /* Empty string, or error msg text. */
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int i;
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/* Set up hash tables with 68000 instructions.
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similar to what the vax assembler does. */
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/* RMS claims the thing to do is take the m68k-opcode.h table, and make
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a copy of it at runtime, adding in the information we want but isn't
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there. I think it'd be better to have an awk script hack the table
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@ -4127,11 +4154,6 @@ md_begin ()
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my lord ghod hath spoken, so we do it this way. Excuse the ugly var
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names. */
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const struct m68k_opcode *ins;
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struct m68k_incant *hack, *slak;
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const char *retval = 0; /* Empty string, or error msg text. */
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int i;
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if (flag_mri)
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{
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flag_reg_prefix_optional = 1;
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@ -4140,6 +4162,20 @@ md_begin ()
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m68k_rel32 = 0;
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}
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/* First sort the opcode table into alphabetical order to seperate
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the order that the assembler wants to see the opcodes from the
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order that the disassembler wants to see them. */
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m68k_sorted_opcodes = xmalloc (m68k_numopcodes * sizeof (* m68k_sorted_opcodes));
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if (!m68k_sorted_opcodes)
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as_fatal (_("Internal Error: Can't allocate m68k_sorted_opcodes of size %d"),
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m68k_numopcodes * sizeof (* m68k_sorted_opcodes));
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for (i = m68k_numopcodes; i--;)
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m68k_sorted_opcodes[i] = m68k_opcodes + i;
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qsort (m68k_sorted_opcodes, m68k_numopcodes,
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sizeof (m68k_sorted_opcodes[0]), m68k_compare_opcode);
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op_hash = hash_new ();
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obstack_begin (&robyn, 4000);
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@ -4148,9 +4184,10 @@ md_begin ()
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hack = slak = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
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do
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{
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ins = &m68k_opcodes[i];
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/* We *could* ignore insns that don't match our arch here
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but just leaving them out of the hash. */
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ins = m68k_sorted_opcodes[i];
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/* We *could* ignore insns that don't match our
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arch here by just leaving them out of the hash. */
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slak->m_operands = ins->args;
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slak->m_opnum = strlen (slak->m_operands) / 2;
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slak->m_arch = ins->arch;
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@ -4158,9 +4195,9 @@ md_begin ()
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/* This is kludgey. */
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slak->m_codenum = ((ins->match) & 0xffffL) ? 2 : 1;
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if (i + 1 != m68k_numopcodes
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&& !strcmp (ins->name, m68k_opcodes[i + 1].name))
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&& !strcmp (ins->name, m68k_sorted_opcodes[i + 1]->name))
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{
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slak->m_next = (struct m68k_incant *) obstack_alloc (&robyn, sizeof (struct m68k_incant));
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slak->m_next = obstack_alloc (&robyn, sizeof (struct m68k_incant));
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i++;
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}
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else
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@ -4179,6 +4216,7 @@ md_begin ()
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const char *name = m68k_opcode_aliases[i].primary;
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const char *alias = m68k_opcode_aliases[i].alias;
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PTR val = hash_find (op_hash, name);
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if (!val)
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as_fatal (_("Internal Error: Can't find %s in hash table"), name);
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retval = hash_insert (op_hash, alias, val);
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@ -4217,6 +4255,7 @@ md_begin ()
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const char *name = mri_aliases[i].primary;
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const char *alias = mri_aliases[i].alias;
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PTR val = hash_find (op_hash, name);
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if (!val)
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as_fatal (_("Internal Error: Can't find %s in hash table"), name);
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retval = hash_jam (op_hash, alias, val);
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@ -4230,6 +4269,7 @@ md_begin ()
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notend_table[i] = 0;
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alt_notend_table[i] = 0;
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}
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notend_table[','] = 1;
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notend_table['{'] = 1;
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notend_table['}'] = 1;
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@ -4246,18 +4286,15 @@ md_begin ()
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#endif
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/* We need to put '(' in alt_notend_table to handle
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cas2 %d0:%d2,%d3:%d4,(%a0):(%a1)
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*/
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cas2 %d0:%d2,%d3:%d4,(%a0):(%a1) */
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alt_notend_table['('] = 1;
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/* We need to put '@' in alt_notend_table to handle
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cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1)
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*/
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cas2 %d0:%d2,%d3:%d4,@(%d0):@(%d1) */
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alt_notend_table['@'] = 1;
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/* We need to put digits in alt_notend_table to handle
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bfextu %d0{24:1},%d0
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*/
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bfextu %d0{24:1},%d0 */
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alt_notend_table['0'] = 1;
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alt_notend_table['1'] = 1;
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alt_notend_table['2'] = 1;
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@ -4274,10 +4311,10 @@ md_begin ()
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gas expects pseudo ops to start with a dot. */
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{
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int n = 0;
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while (mote_pseudo_table[n].poc_name)
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{
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hack = (struct m68k_incant *)
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obstack_alloc (&robyn, sizeof (struct m68k_incant));
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hack = obstack_alloc (&robyn, sizeof (struct m68k_incant));
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hash_insert (op_hash,
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mote_pseudo_table[n].poc_name, (char *) hack);
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hack->m_operands = 0;
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@ -4372,9 +4409,7 @@ m68k_init_after_args ()
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if (current_architecture & m68851)
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{
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if (current_architecture & m68040)
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{
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as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
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}
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as_warn (_("68040 and 68851 specified; mmu instructions may assemble incorrectly"));
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}
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/* What other incompatibilities could we check for? */
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@ -4383,17 +4418,16 @@ m68k_init_after_args ()
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&& (cpu_of_arch (current_architecture)
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/* Can CPU32 have a 68881 coprocessor?? */
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& (m68020 | m68030 | cpu32)))
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{
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current_architecture |= m68881;
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}
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current_architecture |= m68881;
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if (!no_68851
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&& (cpu_of_arch (current_architecture) & m68020up) != 0
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&& (cpu_of_arch (current_architecture) & m68040up) == 0)
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{
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current_architecture |= m68851;
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}
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current_architecture |= m68851;
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if (no_68881 && (current_architecture & m68881))
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as_bad (_("options for 68881 and no-68881 both given"));
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if (no_68851 && (current_architecture & m68851))
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as_bad (_("options for 68851 and no-68851 both given"));
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