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Jakub Jelinek <jj@ultra.linux.cz> 

* config/tc-sparc.c (md_begin): Handle native wordsize aliases.
        (s_ncons): New function.
        (native_op_table): New table.
        (sparc_ip): Be more strict on %hi() etc.; prepare assembler for
        R_SPARC_OLO10 handling.
This commit is contained in:
Richard Henderson 1999-06-07 12:40:36 +00:00
parent bed2c8562a
commit cf9a13018b
2 changed files with 266 additions and 78 deletions
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8
gas/ChangeLog
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@ -1,3 +1,11 @@
1999-06-07 Jakub Jelinek <jj@ultra.linux.cz>
* config/tc-sparc.c (md_begin): Handle native wordsize aliases.
(s_ncons): New function.
(native_op_table): New table.
(sparc_ip): Be more strict on %hi() etc.; prepare assembler for
R_SPARC_OLO10 handling.
Mon Jun 7 10:22:16 1999 Richard Henderson <rth@cygnus.com>
* expr.h (struct expressionS): Revert last change; widen X_op.

336
gas/config/tc-sparc.c
View File

@ -115,6 +115,7 @@ static void s_reserve PARAMS ((int));
static void s_common PARAMS ((int));
static void s_empty PARAMS ((int));
static void s_uacons PARAMS ((int));
static void s_ncons PARAMS ((int));
const pseudo_typeS md_pseudo_table[] =
{
@ -123,6 +124,7 @@ const pseudo_typeS md_pseudo_table[] =
{"empty", s_empty, 0},
{"global", s_globl, 0},
{"half", cons, 2},
{"nword", s_ncons, 0},
{"optim", s_ignore, 0},
{"proc", s_proc, 0},
{"reserve", s_reserve, 0},
@ -174,9 +176,7 @@ const char FLT_CHARS[] = "rRsSfFdDxXpP";
changed in read.c. Ideally it shouldn't have to know about it at all,
but nothing is ideal around here. */
static unsigned char octal[256];
#define isoctal(c) octal[(unsigned char) (c)]
static unsigned char toHex[256];
#define isoctal(c) ((c) >= '0' && (c) < '8')
struct sparc_it
{
@ -184,6 +184,7 @@ struct sparc_it
unsigned long opcode;
struct nlist *nlistp;
expressionS exp;
expressionS exp2;
int pcrel;
bfd_reloc_code_real_type reloc;
};
@ -613,6 +614,27 @@ md_show_usage (stream)
#endif
}
/* native operand size opcode translation */
struct
{
char *name;
char *name32;
char *name64;
} native_op_table[] =
{
{"ldn", "ld", "ldx"},
{"ldna", "lda", "ldxa"},
{"stn", "st", "stx"},
{"stna", "sta", "stxa"},
{"slln", "sll", "sllx"},
{"srln", "srl", "srlx"},
{"sran", "sra", "srax"},
{"casn", "cas", "casx"},
{"casna", "casa", "casxa"},
{"clrn", "clr", "clrx"},
{NULL, NULL, NULL},
};
/* sparc64 priviledged registers */
struct priv_reg_entry
@ -693,16 +715,16 @@ md_begin ()
retval = hash_insert (op_hash, name, (PTR) &sparc_opcodes[i]);
if (retval != NULL)
{
fprintf (stderr, _("internal error: can't hash `%s': %s\n"),
sparc_opcodes[i].name, retval);
as_bad (_("Internal error: can't hash `%s': %s\n"),
sparc_opcodes[i].name, retval);
lose = 1;
}
do
{
if (sparc_opcodes[i].match & sparc_opcodes[i].lose)
{
fprintf (stderr, _("internal error: losing opcode: `%s' \"%s\"\n"),
sparc_opcodes[i].name, sparc_opcodes[i].args);
as_bad (_("Internal error: losing opcode: `%s' \"%s\"\n"),
sparc_opcodes[i].name, sparc_opcodes[i].args);
lose = 1;
}
++i;
@ -711,18 +733,33 @@ md_begin ()
&& !strcmp (sparc_opcodes[i].name, name));
}
for (i = 0; native_op_table[i].name; i++)
{
const struct sparc_opcode *insn;
char *name = sparc_arch_size == 32 ? native_op_table[i].name32 :
native_op_table[i].name64;
insn = (struct sparc_opcode *)hash_find (op_hash, name);
if (insn == NULL)
{
as_bad (_("Internal error: can't find opcode `%s' for `%s'\n"),
name, native_op_table[i].name);
lose = 1;
}
else
{
retval = hash_insert (op_hash, native_op_table[i].name, (PTR) insn);
if (retval != NULL)
{
as_bad (_("Internal error: can't hash `%s': %s\n"),
sparc_opcodes[i].name, retval);
lose = 1;
}
}
}
if (lose)
as_fatal (_("Broken assembler. No assembly attempted."));
for (i = '0'; i < '8'; ++i)
octal[i] = 1;
for (i = '0'; i <= '9'; ++i)
toHex[i] = i - '0';
for (i = 'a'; i <= 'f'; ++i)
toHex[i] = i + 10 - 'a';
for (i = 'A'; i <= 'F'; ++i)
toHex[i] = i + 10 - 'A';
qsort (priv_reg_table, sizeof (priv_reg_table) / sizeof (priv_reg_table[0]),
sizeof (priv_reg_table[0]), cmp_reg_entry);
@ -1885,89 +1922,221 @@ sparc_ip (str, pinsn)
if (*s == ' ')
s++;
/* Check for %hi, etc. */
if (*s == '%')
{
static struct ops {
/* The name as it appears in assembler. */
char *name;
/* strlen (name), precomputed for speed */
int len;
/* The reloc this pseudo-op translates to. */
int reloc;
/* Non-zero if for v9 only. */
int v9_p;
/* Non-zero if can be used in pc-relative contexts. */
int pcrel_p;/*FIXME:wip*/
} ops[] = {
/* hix/lox must appear before hi/lo so %hix won't be
mistaken for %hi. */
{ "hix", 3, BFD_RELOC_SPARC_HIX22, 1, 0 },
{ "lox", 3, BFD_RELOC_SPARC_LOX10, 1, 0 },
{ "hi", 2, BFD_RELOC_HI22, 0, 1 },
{ "lo", 2, BFD_RELOC_LO10, 0, 1 },
{ "hh", 2, BFD_RELOC_SPARC_HH22, 1, 1 },
{ "hm", 2, BFD_RELOC_SPARC_HM10, 1, 1 },
{ "lm", 2, BFD_RELOC_SPARC_LM22, 1, 1 },
{ "h44", 3, BFD_RELOC_SPARC_H44, 1, 0 },
{ "m44", 3, BFD_RELOC_SPARC_M44, 1, 0 },
{ "l44", 3, BFD_RELOC_SPARC_L44, 1, 0 },
{ "uhi", 3, BFD_RELOC_SPARC_HH22, 1, 0 },
{ "ulo", 3, BFD_RELOC_SPARC_HM10, 1, 0 },
{ NULL }
};
struct ops *o;
for (o = ops; o->name; o++)
if (strncmp (s + 1, o->name, o->len) == 0)
break;
if (o->name == NULL)
break;
the_insn.reloc = o->reloc;
s += o->len + 1;
v9_arg_p = o->v9_p;
}
/* Note that if the get_expression() fails, we will still
have created U entries in the symbol table for the
'symbols' in the input string. Try not to create U
symbols for registers, etc. */
{
char *s1;
char *op_arg = NULL;
expressionS op_exp;
bfd_reloc_code_real_type old_reloc = the_insn.reloc;
/* Check for %hi, etc. */
if (*s == '%')
{
static const struct ops {
/* The name as it appears in assembler. */
char *name;
/* strlen (name), precomputed for speed */
int len;
/* The reloc this pseudo-op translates to. */
int reloc;
/* Non-zero if for v9 only. */
int v9_p;
/* Non-zero if can be used in pc-relative contexts. */
int pcrel_p;/*FIXME:wip*/
} ops[] = {
/* hix/lox must appear before hi/lo so %hix won't be
mistaken for %hi. */
{ "hix", 3, BFD_RELOC_SPARC_HIX22, 1, 0 },
{ "lox", 3, BFD_RELOC_SPARC_LOX10, 1, 0 },
{ "hi", 2, BFD_RELOC_HI22, 0, 1 },
{ "lo", 2, BFD_RELOC_LO10, 0, 1 },
{ "hh", 2, BFD_RELOC_SPARC_HH22, 1, 1 },
{ "hm", 2, BFD_RELOC_SPARC_HM10, 1, 1 },
{ "lm", 2, BFD_RELOC_SPARC_LM22, 1, 1 },
{ "h44", 3, BFD_RELOC_SPARC_H44, 1, 0 },
{ "m44", 3, BFD_RELOC_SPARC_M44, 1, 0 },
{ "l44", 3, BFD_RELOC_SPARC_L44, 1, 0 },
{ "uhi", 3, BFD_RELOC_SPARC_HH22, 1, 0 },
{ "ulo", 3, BFD_RELOC_SPARC_HM10, 1, 0 },
{ NULL }
};
const struct ops *o;
for (o = ops; o->name; o++)
if (strncmp (s + 1, o->name, o->len) == 0)
break;
if (o->name == NULL)
break;
if (s[o->len + 1] != '(')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), o->name);
return;
}
op_arg = o->name;
the_insn.reloc = o->reloc;
s += o->len + 2;
v9_arg_p = o->v9_p;
}
/* Note that if the get_expression() fails, we will still
have created U entries in the symbol table for the
'symbols' in the input string. Try not to create U
symbols for registers, etc. */
/* This stuff checks to see if the expression ends in
+%reg. If it does, it removes the register from
the expression, and re-sets 's' to point to the
right place. */
char *s1;
if (op_arg)
{
int npar = 0;
for (s1 = s; *s1 && *s1 != ',' && *s1 != ']'; s1++)
if (*s1 == '(')
npar++;
else if (*s1 == ')')
{
if (!npar)
break;
npar--;
}
if (*s1 != ')')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), op_arg);
return;
}
*s1 = '\0';
(void) get_expression (s);
*s1 = ')';
s = s1 + 1;
if (*s == ',' || *s == ']' || !*s)
continue;
if (*s != '+' && *s != '-')
{
as_bad (_("Illegal operands: Can't do arithmetics other than + and - involving %%%s()"), op_arg);
return;
}
*s1 = '0';
s = s1;
op_exp = the_insn.exp;
memset (&the_insn.exp, 0, sizeof(the_insn.exp));
}
for (s1 = s; *s1 && *s1 != ',' && *s1 != ']'; s1++) ;
if (s1 != s && isdigit ((unsigned char) s1[-1]))
{
if (s1[-2] == '%' && s1[-3] == '+')
{
s1 -= 3;
*s1 = '\0';
(void) get_expression (s);
*s1 = '+';
s = s1;
continue;
}
s1 -= 3;
else if (strchr ("goli0123456789", s1[-2]) && s1[-3] == '%' && s1[-4] == '+')
s1 -= 4;
else
s1 = NULL;
if (s1)
{
s1 -= 4;
*s1 = '\0';
(void) get_expression (s);
*s1 = '+';
if (op_arg)
*s = ')';
s = s1;
continue;
}
}
else
s1 = NULL;
if (!s1)
{
(void) get_expression (s);
if (op_arg)
*s = ')';
s = expr_end;
}
if (op_arg)
{
the_insn.exp2 = the_insn.exp;
the_insn.exp = op_exp;
if (the_insn.exp2.X_op == O_absent)
the_insn.exp2.X_op = O_illegal;
else if (the_insn.exp.X_op == O_absent)
{
the_insn.exp = the_insn.exp2;
the_insn.exp2.X_op = O_illegal;
}
else if (the_insn.exp.X_op == O_constant)
{
valueT val = the_insn.exp.X_add_number;
switch (the_insn.reloc)
{
case BFD_RELOC_SPARC_HH22:
val = BSR (val, 32);
/* intentional fallthrough */
case BFD_RELOC_SPARC_LM22:
case BFD_RELOC_HI22:
val = (val >> 10) & 0x3fffff;
break;
case BFD_RELOC_SPARC_HM10:
val = BSR (val, 32);
/* intentional fallthrough */
case BFD_RELOC_LO10:
val &= 0x3ff;
break;
case BFD_RELOC_SPARC_H44:
val >>= 22;
val &= 0x3fffff;
break;
case BFD_RELOC_SPARC_M44:
val >>= 12;
val &= 0x3ff;
break;
case BFD_RELOC_SPARC_L44:
val &= 0xfff;
break;
case BFD_RELOC_SPARC_HIX22:
val = ~ val;
val = (val >> 10) & 0x3fffff;
break;
case BFD_RELOC_SPARC_LOX10:
val = (val & 0x3ff) | 0x1c00;
break;
}
the_insn.exp = the_insn.exp2;
the_insn.exp.X_add_number += val;
the_insn.exp2.X_op = O_illegal;
the_insn.reloc = old_reloc;
}
else if (the_insn.exp2.X_op != O_constant)
{
as_bad (_("Illegal operands: Can't add non-constant expression to %%%s()"), op_arg);
return;
}
else
{
if (1 || old_reloc != BFD_RELOC_SPARC13
|| the_insn.reloc != BFD_RELOC_LO10
|| sparc_arch_size != 64
|| sparc_pic_code)
{
as_bad (_("Illegal operands: Can't do arithmetics involving %%%s() of a relocatable symbol"), op_arg);
return;
}
the_insn.reloc = BFD_RELOC_SPARC_OLO10;
}
}
}
(void) get_expression (s);
s = expr_end;
/* Check for constants that don't require emitting a reloc. */
if (the_insn.exp.X_op == O_constant
&& the_insn.exp.X_add_symbol == 0
@ -3395,6 +3564,17 @@ s_uacons (bytes)
cons (bytes);
}
/* This handles the native word allocation pseudo-op .nword.
For sparc_arch_size 32 it is equivalent to .word, for
sparc_arch_size 64 it is equivalent to .xword. */
static void
s_ncons (bytes)
int bytes;
{
cons (sparc_arch_size == 32 ? 4 : 8);
}
/* If the --enforce-aligned-data option is used, we require .word,
et. al., to be aligned correctly. We do it by setting up an
rs_align_code frag, and checking in HANDLE_ALIGN to make sure that