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* config/tc-mips.c (md_begin): Add the general registers to the

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symbol table.
	(mips16_ip): First parse the expression, and then see whether it
	came up with a register, rather than trying to first see whether
	we are looking at a register.
This commit is contained in:
Ian Lance Taylor 1997-02-12 19:37:58 +00:00
parent 508f2139b6
commit ebf2837264
2 changed files with 58 additions and 26 deletions
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8
gas/ChangeLog
View File

@ -1,3 +1,11 @@
Wed Feb 12 14:36:29 1997 Ian Lance Taylor <ian@cygnus.com>
* config/tc-mips.c (md_begin): Add the general registers to the
symbol table.
(mips16_ip): First parse the expression, and then see whether it
came up with a register, rather than trying to first see whether
we are looking at a register.
start-sanitize-tic80 start-sanitize-tic80
Tue Feb 11 15:13:39 1997 Fred Fish <fnf@cygnus.com> Tue Feb 11 15:13:39 1997 Fred Fish <fnf@cygnus.com>

76
gas/config/tc-mips.c
View File

@ -934,6 +934,31 @@ md_begin ()
&& strcmp (mips16_opcodes[i].name, name) == 0); && strcmp (mips16_opcodes[i].name, name) == 0);
} }
/* We add all the general register names to the symbol table. This
helps us detect invalid uses of them. */
for (i = 0; i < 32; i++)
{
char buf[5];
sprintf (buf, "$%d", i);
symbol_table_insert (symbol_new (buf, reg_section, i,
&zero_address_frag));
}
symbol_table_insert (symbol_new ("$fp", reg_section, FP,
&zero_address_frag));
symbol_table_insert (symbol_new ("$sp", reg_section, SP,
&zero_address_frag));
symbol_table_insert (symbol_new ("$gp", reg_section, GP,
&zero_address_frag));
symbol_table_insert (symbol_new ("$at", reg_section, AT,
&zero_address_frag));
symbol_table_insert (symbol_new ("$kt0", reg_section, KT0,
&zero_address_frag));
symbol_table_insert (symbol_new ("$kt1", reg_section, KT1,
&zero_address_frag));
symbol_table_insert (symbol_new ("$pc", reg_section, -1,
&zero_address_frag));
mips_no_prev_insn (); mips_no_prev_insn ();
mips_gprmask = 0; mips_gprmask = 0;
@ -7176,27 +7201,6 @@ mips16_ip (str, ip)
case 'U': case 'U':
case 'k': case 'k':
case 'K': case 'K':
if (s[0] == '$' && isdigit (s[1]))
{
/* Looks like a register name. */
break;
}
if (s[0] == '('
&& args[1] == '('
&& s[1] == '$')
{
/* It looks like the expression was omitted before a
register indirection, which means that the
expression is implicitly zero. We still set up
imm_expr, so that we handle explicit extensions
correctly. */
imm_expr.X_op = O_constant;
imm_expr.X_add_number = 0;
imm_reloc = (int) BFD_RELOC_UNUSED + c;
continue;
}
if (s[0] == '%' if (s[0] == '%'
&& strncmp (s + 1, "gprel(", sizeof "gprel(" - 1) == 0) && strncmp (s + 1, "gprel(", sizeof "gprel(" - 1) == 0)
{ {
@ -7222,6 +7226,27 @@ mips16_ip (str, ip)
my_getExpression (&imm_expr, s); my_getExpression (&imm_expr, s);
} }
if (imm_expr.X_op == O_register)
{
/* What we thought was an expression turned out to
be a register. */
if (s[0] == '(' && args[1] == '(')
{
/* It looks like the expression was omitted
before a register indirection, which means
that the expression is implicitly zero. We
still set up imm_expr, so that we handle
explicit extensions correctly. */
imm_expr.X_op = O_constant;
imm_expr.X_add_number = 0;
imm_reloc = (int) BFD_RELOC_UNUSED + c;
continue;
}
break;
}
/* We need to relax this instruction. */ /* We need to relax this instruction. */
imm_reloc = (int) BFD_RELOC_UNUSED + c; imm_reloc = (int) BFD_RELOC_UNUSED + c;
s = expr_end; s = expr_end;
@ -7235,12 +7260,11 @@ mips16_ip (str, ip)
/* We use offset_reloc rather than imm_reloc for the PC /* We use offset_reloc rather than imm_reloc for the PC
relative operands. This lets macros with both relative operands. This lets macros with both
immediate and address operands work correctly. */ immediate and address operands work correctly. */
if (s[0] == '$' && isdigit (s[1]))
{
/* Looks like a register name. */
break;
}
my_getExpression (&offset_expr, s); my_getExpression (&offset_expr, s);
if (offset_expr.X_op == O_register)
break;
/* We need to relax this instruction. */ /* We need to relax this instruction. */
offset_reloc = (int) BFD_RELOC_UNUSED + c; offset_reloc = (int) BFD_RELOC_UNUSED + c;
s = expr_end; s = expr_end;