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Jakub Jelinek <jj@ultra.linux.cz>

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* config/tc-sparc.c (sparc_ip): Don't use side-effect expression
        with isoctal.
        * config/tc-sparc.c (synthetize_setuw, synthetize_setsw,
        synthetize_setx): New functions.
        (md_assemble): Broken the special cases into the above
        functions. Make compiler happy if sizeof(bfd_vma)==4.
        Fix sethi generated from set/setuw. If instructions have a relloc,
        always clear the fields to be relocated in the opcode.
        (sparc_ip): Remove special_case global variable.
This commit is contained in:
Richard Henderson 1999-06-10 21:11:39 +00:00
parent b3fb1136bf
commit a22b281cd7
2 changed files with 347 additions and 304 deletions
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13
gas/ChangeLog
View file

@ -1,3 +1,16 @@
1999-06-10 Jakub Jelinek <jj@ultra.linux.cz>
* config/tc-sparc.c (sparc_ip): Don't use side-effect expression
with isoctal.
* config/tc-sparc.c (synthetize_setuw, synthetize_setsw,
synthetize_setx): New functions.
(md_assemble): Broken the special cases into the above
functions. Make compiler happy if sizeof(bfd_vma)==4.
Fix sethi generated from set/setuw. If instructions have a relloc,
always clear the fields to be relocated in the opcode.
(sparc_ip): Remove special_case global variable.
1999-06-10 Ian Lance Taylor <ian@zembu.com>
Based on patches from John W. Woznack <jwoznack@concentric.net>:

638
gas/config/tc-sparc.c
View file

@ -31,11 +31,14 @@
static struct sparc_arch *lookup_arch PARAMS ((char *));
static void init_default_arch PARAMS ((void));
static void sparc_ip PARAMS ((char *, const struct sparc_opcode **));
static int sparc_ip PARAMS ((char *, const struct sparc_opcode **));
static int in_signed_range PARAMS ((bfd_signed_vma, bfd_signed_vma));
static int in_unsigned_range PARAMS ((bfd_vma, bfd_vma));
static int in_bitfield_range PARAMS ((bfd_signed_vma, bfd_signed_vma));
static int sparc_ffs PARAMS ((unsigned int));
static void synthetize_setuw PARAMS ((const struct sparc_opcode *));
static void synthetize_setsw PARAMS ((const struct sparc_opcode *));
static void synthetize_setx PARAMS ((const struct sparc_opcode *));
static bfd_vma BSR PARAMS ((bfd_vma, int));
static int cmp_reg_entry PARAMS ((const PTR, const PTR));
static int parse_keyword_arg PARAMS ((int (*) (const char *), char **, int *));
@ -176,7 +179,7 @@ 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. */
#define isoctal(c) ((c) >= '0' && (c) < '8')
#define isoctal(c) ((unsigned)((c) - '0') < '8')
struct sparc_it
{
@ -897,9 +900,6 @@ BSR (val, amount)
/* For communication between sparc_ip and get_expression. */
static char *expr_end;
/* For communication between md_assemble and sparc_ip. */
static int special_case;
/* Values for `special_case'.
Instructions that require wierd handling because they're longer than
4 bytes. */
@ -924,6 +924,281 @@ static const struct sparc_opcode *last_insn;
/* The assembled opcode of `last_insn'. */
static unsigned long last_opcode;
/* Handle the set and setuw synthetic instructions. */
static void
synthetize_setuw (insn)
const struct sparc_opcode *insn;
{
int need_hi22_p = 0;
int rd = (the_insn.opcode & RD (~0)) >> 25;
if (the_insn.exp.X_op == O_constant)
{
if (SPARC_OPCODE_ARCH_V9_P (max_architecture))
{
if (sizeof(offsetT) > 4
&& (the_insn.exp.X_add_number < 0
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff))
as_warn (_("set: number not in 0..4294967295 range"));
}
else
{
if (sizeof(offsetT) > 4
&& (the_insn.exp.X_add_number < -(offsetT) 0x80000000
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff))
as_warn (_("set: number not in -2147483648..4294967295 range"));
the_insn.exp.X_add_number = (int)the_insn.exp.X_add_number;
}
}
/* See if operand is absolute and small; skip sethi if so. */
if (the_insn.exp.X_op != O_constant
|| the_insn.exp.X_add_number >= (1 << 12)
|| the_insn.exp.X_add_number < -(1 << 12))
{
the_insn.opcode = (SETHI_INSN | RD (rd)
| ((the_insn.exp.X_add_number >> 10)
& (the_insn.exp.X_op == O_constant ? 0x3fffff : 0)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_HI22
: BFD_RELOC_NONE);
output_insn (insn, &the_insn);
need_hi22_p = 1;
}
/* See if operand has no low-order bits; skip OR if so. */
if (the_insn.exp.X_op != O_constant
|| (need_hi22_p && (the_insn.exp.X_add_number & 0x3FF) != 0)
|| ! need_hi22_p)
{
the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (rd) : 0)
| RD (rd) | IMMED
| (the_insn.exp.X_add_number
& (the_insn.exp.X_op != O_constant ? 0 :
need_hi22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_LO10
: BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
}
/* Handle the setsw synthetic instruction. */
static void
synthetize_setsw (insn)
const struct sparc_opcode *insn;
{
int low32, rd, opc;
rd = (the_insn.opcode & RD (~0)) >> 25;
if (the_insn.exp.X_op != O_constant)
{
synthetize_setuw (insn);
/* Need to sign extend it. */
the_insn.opcode = (SRA_INSN | RS1 (rd) | RD (rd));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
return;
}
if (sizeof(offsetT) > 4
&& (the_insn.exp.X_add_number < -(offsetT) 0x80000000
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff))
as_warn (_("setsw: number not in -2147483648..4294967295 range"));
low32 = the_insn.exp.X_add_number;
if (low32 >= 0)
{
synthetize_setuw (insn);
return;
}
opc = OR_INSN;
the_insn.reloc = BFD_RELOC_NONE;
/* See if operand is absolute and small; skip sethi if so. */
if (low32 < -(1 << 12))
{
the_insn.opcode = (SETHI_INSN | RD (rd)
| (((~the_insn.exp.X_add_number) >> 10) & 0x3fffff));
output_insn (insn, &the_insn);
low32 = 0x1c00 | (low32 & 0x3ff);
opc = RS1 (rd) | XOR_INSN;
}
the_insn.opcode = (opc | RD (rd) | IMMED
| (low32 & 0x1fff));
output_insn (insn, &the_insn);
}
/* Handle the setsw synthetic instruction. */
static void
synthetize_setx (insn)
const struct sparc_opcode *insn;
{
int upper32, lower32;
int tmpreg = (the_insn.opcode & RS1 (~0)) >> 14;
int dstreg = (the_insn.opcode & RD (~0)) >> 25;
int upper_dstreg;
int need_hh22_p = 0, need_hm10_p = 0, need_hi22_p = 0, need_lo10_p = 0;
int need_xor10_p = 0;
#define SIGNEXT32(x) ((((x) & 0xffffffff) ^ 0x80000000) - 0x80000000)
lower32 = SIGNEXT32 (the_insn.exp.X_add_number);
upper32 = SIGNEXT32 (BSR (the_insn.exp.X_add_number, 32));
#undef SIGNEXT32
upper_dstreg = tmpreg;
/* The tmp reg should not be the dst reg. */
if (tmpreg == dstreg)
as_warn (_("setx: temporary register same as destination register"));
/* ??? Obviously there are other optimizations we can do
(e.g. sethi+shift for 0x1f0000000) and perhaps we shouldn't be
doing some of these. Later. If you do change things, try to
change all of this to be table driven as well. */
/* What to output depends on the number if it's constant.
Compute that first, then output what we've decided upon. */
if (the_insn.exp.X_op != O_constant)
{
if (sparc_arch_size == 32)
{
/* When arch size is 32, we want setx to be equivalent
to setuw for anything but constants. */
the_insn.exp.X_add_number &= 0xffffffff;
synthetize_setuw (insn);
return;
}
need_hh22_p = need_hm10_p = need_hi22_p = need_lo10_p = 1;
lower32 = 0; upper32 = 0;
}
else
{
/* Reset X_add_number, we've extracted it as upper32/lower32.
Otherwise fixup_segment will complain about not being able to
write an 8 byte number in a 4 byte field. */
the_insn.exp.X_add_number = 0;
/* Only need hh22 if `or' insn can't handle constant. */
if (upper32 < -(1 << 12) || upper32 >= (1 << 12))
need_hh22_p = 1;
/* Does bottom part (after sethi) have bits? */
if ((need_hh22_p && (upper32 & 0x3ff) != 0)
/* No hh22, but does upper32 still have bits we can't set
from lower32? */
|| (! need_hh22_p && upper32 != 0 && upper32 != -1))
need_hm10_p = 1;
/* If the lower half is all zero, we build the upper half directly
into the dst reg. */
if (lower32 != 0
/* Need lower half if number is zero or 0xffffffff00000000. */
|| (! need_hh22_p && ! need_hm10_p))
{
/* No need for sethi if `or' insn can handle constant. */
if (lower32 < -(1 << 12) || lower32 >= (1 << 12)
/* Note that we can't use a negative constant in the `or'
insn unless the upper 32 bits are all ones. */
|| (lower32 < 0 && upper32 != -1)
|| (lower32 >= 0 && upper32 == -1))
need_hi22_p = 1;
if (need_hi22_p && upper32 == -1)
need_xor10_p = 1;
/* Does bottom part (after sethi) have bits? */
else if ((need_hi22_p && (lower32 & 0x3ff) != 0)
/* No sethi. */
|| (! need_hi22_p && (lower32 & 0x1fff) != 0)
/* Need `or' if we didn't set anything else. */
|| (! need_hi22_p && ! need_hh22_p && ! need_hm10_p))
need_lo10_p = 1;
}
else
/* Output directly to dst reg if lower 32 bits are all zero. */
upper_dstreg = dstreg;
}
if (!upper_dstreg && dstreg)
as_warn (_("setx: illegal temporary register g0"));
if (need_hh22_p)
{
the_insn.opcode = (SETHI_INSN | RD (upper_dstreg)
| ((upper32 >> 10) & 0x3fffff));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_HH22 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_hi22_p)
{
the_insn.opcode = (SETHI_INSN | RD (dstreg)
| (((need_xor10_p ? ~lower32 : lower32)
>> 10) & 0x3fffff));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_LM22 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_hm10_p)
{
the_insn.opcode = (OR_INSN
| (need_hh22_p ? RS1 (upper_dstreg) : 0)
| RD (upper_dstreg)
| IMMED
| (upper32 & (need_hh22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_HM10 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_lo10_p)
{
/* FIXME: One nice optimization to do here is to OR the low part
with the highpart if hi22 isn't needed and the low part is
positive. */
the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (dstreg) : 0)
| RD (dstreg)
| IMMED
| (lower32 & (need_hi22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_LO10 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
/* If we needed to build the upper part, shift it into place. */
if (need_hh22_p || need_hm10_p)
{
the_insn.opcode = (SLLX_INSN | RS1 (upper_dstreg) | RD (upper_dstreg)
| IMMED | 32);
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
/* To get -1 in upper32, we do sethi %hi(~x), r; xor r, -0x400 | x, r. */
if (need_xor10_p)
{
the_insn.opcode = (XOR_INSN | RS1 (dstreg) | RD (dstreg) | IMMED
| 0x1c00 | (lower32 & 0x3ff));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
/* If we needed to build both upper and lower parts, OR them together. */
else if ((need_hh22_p || need_hm10_p) && (need_hi22_p || need_lo10_p))
{
the_insn.opcode = (OR_INSN | RS1 (dstreg) | RS2 (upper_dstreg)
| RD (dstreg));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
}
/* Main entry point to assemble one instruction. */
void
@ -931,10 +1206,10 @@ md_assemble (str)
char *str;
{
const struct sparc_opcode *insn;
int special_case;
know (str);
special_case = SPECIAL_CASE_NONE;
sparc_ip (str, &insn);
special_case = sparc_ip (str, &insn);
/* We warn about attempts to put a floating point branch in a delay slot,
unless the delay slot has been annulled. */
@ -965,301 +1240,50 @@ md_assemble (str)
as_warn (_("FP branch preceded by FP instruction; NOP inserted"));
}
for (;;)
{
switch (special_case)
{
case SPECIAL_CASE_NONE:
/* normal insn */
output_insn (insn, &the_insn);
return;
switch (special_case)
{
case SPECIAL_CASE_NONE:
/* normal insn */
output_insn (insn, &the_insn);
break;
case SPECIAL_CASE_SETSW:
if (the_insn.exp.X_op == O_constant)
{
int low32;
if (the_insn.exp.X_add_number < -(offsetT)0x80000000
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff)
as_warn (_("setsw: number not in -2147483648..4294967295 range"));
case SPECIAL_CASE_SETSW:
synthetize_setsw (insn);
break;
case SPECIAL_CASE_SET:
synthetize_setuw (insn);
break;
low32 = the_insn.exp.X_add_number;
if (low32 < 0)
{
int rd = (the_insn.opcode & RD (~0)) >> 25;
int opc = OR_INSN;
case SPECIAL_CASE_SETX:
synthetize_setx (insn);
break;
case SPECIAL_CASE_FDIV:
{
int rd = (the_insn.opcode >> 25) & 0x1f;
the_insn.reloc = BFD_RELOC_NONE;
/* See if operand is absolute and small; skip sethi if so. */
if (low32 < -(1 << 12))
{
the_insn.opcode = (SETHI_INSN | RD (rd)
| (((~the_insn.exp.X_add_number) >> 10) & 0x3fffff));
output_insn (insn, &the_insn);
low32 = 0x1c00 | (low32 & 0x3ff);
opc = RS1 (rd) | XOR_INSN;
}
the_insn.opcode = (opc | RD (rd) | IMMED
| (low32 & 0x1fff));
output_insn (insn, &the_insn);
return;
}
}
/* FALLTHROUGH */
output_insn (insn, &the_insn);
case SPECIAL_CASE_SET:
{
int need_hi22_p = 0;
int rd = (the_insn.opcode & RD (~0)) >> 25;
if (the_insn.exp.X_op == O_constant)
{
if (SPARC_OPCODE_ARCH_V9_P (max_architecture))
{
if (the_insn.exp.X_add_number < 0
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff)
as_warn (_("set: number not in 0..4294967295 range"));
}
else
{
if (the_insn.exp.X_add_number < (offsetT)-0x80000000
|| the_insn.exp.X_add_number > (offsetT) 0xffffffff)
as_warn (_("set: number not in -2147483648..4294967295 range"));
if (the_insn.exp.X_add_number >= (offsetT)0x80000000)
the_insn.exp.X_add_number -= (offsetT)0x100000000;
}
}
/* According to information leaked from Sun, the "fdiv" instructions
on early SPARC machines would produce incorrect results sometimes.
The workaround is to add an fmovs of the destination register to
itself just after the instruction. This was true on machines
with Weitek 1165 float chips, such as the Sun-4/260 and /280. */
assert (the_insn.reloc == BFD_RELOC_NONE);
the_insn.opcode = FMOVS_INSN | rd | RD (rd);
output_insn (insn, &the_insn);
return;
}
/* See if operand is absolute and small; skip sethi if so. */
if (the_insn.exp.X_op != O_constant
|| the_insn.exp.X_add_number >= (1 << 12)
|| the_insn.exp.X_add_number < -(1 << 12))
{
the_insn.opcode = (SETHI_INSN | RD (rd)
| ((the_insn.exp.X_add_number >> 10)
& the_insn.exp.X_op == O_constant ? 0x3fffff : 0));
the_insn.reloc = BFD_RELOC_HI22;
output_insn (insn, &the_insn);
need_hi22_p = 1;
}
/* See if operand has no low-order bits; skip OR if so. */
if (the_insn.exp.X_op != O_constant
|| (need_hi22_p && (the_insn.exp.X_add_number & 0x3FF) != 0)
|| ! need_hi22_p)
{
the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (rd) : 0)
| RD (rd)
| IMMED
| (the_insn.exp.X_add_number
& (the_insn.exp.X_op != O_constant ? 0 :
need_hi22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_LO10
: BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (special_case == SPECIAL_CASE_SETSW
&& the_insn.exp.X_op != O_constant)
{
/* Need to sign extend it. */
the_insn.opcode = (SRA_INSN | RS1 (rd) | RD (rd));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
return;
}
case SPECIAL_CASE_SETX:
{
int upper32, lower32;
int tmpreg = (the_insn.opcode & RS1 (~0)) >> 14;
int dstreg = (the_insn.opcode & RD (~0)) >> 25;
int upper_dstreg;
int need_hh22_p = 0, need_hm10_p = 0, need_hi22_p = 0, need_lo10_p = 0;
int need_xor10_p = 0;
#define SIGNEXT32(x) ((((x) & 0xffffffff) ^ 0x80000000) - 0x80000000)
lower32 = SIGNEXT32 (the_insn.exp.X_add_number);
upper32 = SIGNEXT32 (BSR (the_insn.exp.X_add_number, 32));
#undef SIGNEXT32
upper_dstreg = tmpreg;
/* The tmp reg should not be the dst reg. */
if (tmpreg == dstreg)
as_warn (_("setx: temporary register same as destination register"));
/* ??? Obviously there are other optimizations we can do
(e.g. sethi+shift for 0x1f0000000) and perhaps we shouldn't be
doing some of these. Later. If you do change things, try to
change all of this to be table driven as well. */
/* What to output depends on the number if it's constant.
Compute that first, then output what we've decided upon. */
if (the_insn.exp.X_op != O_constant)
{
if (sparc_arch_size == 32)
{
/* When arch size is 32, we want setx to be equivalent
to setuw for anything but constants. */
the_insn.exp.X_add_number &= 0xffffffff;
special_case = SPECIAL_CASE_SET;
continue;
}
need_hh22_p = need_hm10_p = need_hi22_p = need_lo10_p = 1;
lower32 = 0; upper32 = 0;
}
else
{
/* Reset X_add_number, we've extracted it as upper32/lower32.
Otherwise fixup_segment will complain about not being able to
write an 8 byte number in a 4 byte field. */
the_insn.exp.X_add_number = 0;
/* Only need hh22 if `or' insn can't handle constant. */
if (upper32 < -(1 << 12) || upper32 >= (1 << 12))
need_hh22_p = 1;
/* Does bottom part (after sethi) have bits? */
if ((need_hh22_p && (upper32 & 0x3ff) != 0)
/* No hh22, but does upper32 still have bits we can't set
from lower32? */
|| (! need_hh22_p && upper32 != 0 && upper32 != -1))
need_hm10_p = 1;
/* If the lower half is all zero, we build the upper half directly
into the dst reg. */
if (lower32 != 0
/* Need lower half if number is zero or 0xffffffff00000000. */
|| (! need_hh22_p && ! need_hm10_p))
{
/* No need for sethi if `or' insn can handle constant. */
if (lower32 < -(1 << 12) || lower32 >= (1 << 12)
/* Note that we can't use a negative constant in the `or'
insn unless the upper 32 bits are all ones. */
|| (lower32 < 0 && upper32 != -1)
|| (lower32 >= 0 && upper32 == -1))
need_hi22_p = 1;
if (need_hi22_p && upper32 == -1)
need_xor10_p = 1;
/* Does bottom part (after sethi) have bits? */
else if ((need_hi22_p && (lower32 & 0x3ff) != 0)
/* No sethi. */
|| (! need_hi22_p && (lower32 & 0x1fff) != 0)
/* Need `or' if we didn't set anything else. */
|| (! need_hi22_p && ! need_hh22_p && ! need_hm10_p))
need_lo10_p = 1;
}
else
/* Output directly to dst reg if lower 32 bits are all
zero. */
upper_dstreg = dstreg;
}
if (need_hh22_p)
{
the_insn.opcode = (SETHI_INSN | RD (upper_dstreg)
| ((upper32 >> 10) & 0x3fffff));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_HH22 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_hi22_p)
{
the_insn.opcode = (SETHI_INSN | RD (dstreg)
| (((need_xor10_p ? ~lower32 : lower32)
>> 10) & 0x3fffff));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_LM22 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_hm10_p)
{
the_insn.opcode = (OR_INSN
| (need_hh22_p ? RS1 (upper_dstreg) : 0)
| RD (upper_dstreg)
| IMMED
| (upper32
& (need_hh22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = (the_insn.exp.X_op != O_constant
? BFD_RELOC_SPARC_HM10 : BFD_RELOC_NONE);
output_insn (insn, &the_insn);
}
if (need_lo10_p)
{
/* FIXME: One nice optimization to do here is to OR the low part
with the highpart if hi22 isn't needed and the low part is
positive. */
the_insn.opcode = (OR_INSN | (need_hi22_p ? RS1 (dstreg) : 0)
| RD (dstreg)
| IMMED
| (lower32
& (need_hi22_p ? 0x3ff : 0x1fff)));
the_insn.reloc = BFD_RELOC_LO10;
output_insn (insn, &the_insn);
}
/* If we needed to build the upper part, shift it into place. */
if (need_hh22_p || need_hm10_p)
{
the_insn.opcode = (SLLX_INSN | RS1 (upper_dstreg) | RD (upper_dstreg)
| IMMED | 32);
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
/* To get -1 in upper32, we do sethi %hi(~x), r; xor r, -0x400 | x, r. */
if (need_xor10_p)
{
the_insn.opcode = (XOR_INSN | RS1 (dstreg) | RD (dstreg) | IMMED
| 0x1c00 | (lower32 & 0x3ff));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
/* If we needed to build both upper and lower parts, OR them together. */
else if ((need_hh22_p || need_hm10_p)
&& (need_hi22_p || need_lo10_p))
{
the_insn.opcode = (OR_INSN | RS1 (dstreg) | RS2 (upper_dstreg)
| RD (dstreg));
the_insn.reloc = BFD_RELOC_NONE;
output_insn (insn, &the_insn);
}
return;
}
case SPECIAL_CASE_FDIV:
{
int rd = (the_insn.opcode >> 25) & 0x1f;
output_insn (insn, &the_insn);
/* According to information leaked from Sun, the "fdiv" instructions
on early SPARC machines would produce incorrect results sometimes.
The workaround is to add an fmovs of the destination register to
itself just after the instruction. This was true on machines
with Weitek 1165 float chips, such as the Sun-4/260 and /280. */
assert (the_insn.reloc == BFD_RELOC_NONE);
the_insn.opcode = FMOVS_INSN | rd | RD (rd);
output_insn (insn, &the_insn);
return;
}
default:
as_fatal (_("failed special case insn sanity check"));
}
default:
as_fatal (_("failed special case insn sanity check"));
}
}
/* Subroutine of md_assemble to do the actual parsing. */
static void
static int
sparc_ip (str, pinsn)
char *str;
const struct sparc_opcode **pinsn;
@ -1275,6 +1299,7 @@ sparc_ip (str, pinsn)
int match = 0;
int comma = 0;
int v9_arg_p;
int special_case = SPECIAL_CASE_NONE;
s = str;
if (islower ((unsigned char) *s))
@ -1306,7 +1331,7 @@ sparc_ip (str, pinsn)
if (insn == NULL)
{
as_bad (_("Unknown opcode: `%s'"), str);
return;
return special_case;
}
if (comma)
{
@ -1765,7 +1790,8 @@ sparc_ip (str, pinsn)
goto error;
case 'g': /* global register */
if (isoctal (c = *s++))
c = *s++;
if (isoctal (c))
{
mask = c - '0';
break;
@ -1773,7 +1799,8 @@ sparc_ip (str, pinsn)
goto error;
case 'i': /* in register */
if (isoctal (c = *s++))
c = *s++;
if (isoctal (c))
{
mask = c - '0' + 24;
break;
@ -1781,7 +1808,8 @@ sparc_ip (str, pinsn)
goto error;
case 'l': /* local register */
if (isoctal (c = *s++))
c = *s++;
if (isoctal (c))
{
mask = (c - '0' + 16);
break;
@ -1789,7 +1817,8 @@ sparc_ip (str, pinsn)
goto error;
case 'o': /* out register */
if (isoctal (c = *s++))
c = *s++;
if (isoctal (c))
{
mask = (c - '0' + 8);
break;
@ -2041,7 +2070,7 @@ sparc_ip (str, pinsn)
if (s[o->len + 1] != '(')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), o->name);
return;
return special_case;
}
op_arg = o->name;
@ -2077,7 +2106,7 @@ sparc_ip (str, pinsn)
if (*s1 != ')')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), op_arg);
return;
return special_case;
}
*s1 = '\0';
@ -2089,7 +2118,7 @@ sparc_ip (str, pinsn)
if (*s != '+' && *s != '-')
{
as_bad (_("Illegal operands: Can't do arithmetics other than + and - involving %%%s()"), op_arg);
return;
return special_case;
}
*s1 = '0';
s = s1;
@ -2192,7 +2221,7 @@ sparc_ip (str, pinsn)
else if (the_insn.exp2.X_op != O_constant)
{
as_bad (_("Illegal operands: Can't add non-constant expression to %%%s()"), op_arg);
return;
return special_case;
}
else
{
@ -2202,7 +2231,7 @@ sparc_ip (str, pinsn)
|| sparc_pic_code)
{
as_bad (_("Illegal operands: Can't do arithmetics involving %%%s() of a relocatable symbol"), op_arg);
return;
return special_case;
}
the_insn.reloc = BFD_RELOC_SPARC_OLO10;
}
@ -2416,7 +2445,7 @@ sparc_ip (str, pinsn)
else
{
as_bad (_("Illegal operands%s"), error_message);
return;
return special_case;
}
}
else
@ -2484,7 +2513,7 @@ sparc_ip (str, pinsn)
as_tsktsk (_(" (Requires %s; requested architecture is %s.)"),
required_archs,
sparc_opcode_archs[max_architecture].name);
return;
return special_case;
}
} /* if no match */
@ -2492,6 +2521,7 @@ sparc_ip (str, pinsn)
} /* forever looking for a match */
the_insn.opcode = opcode;
return special_case;
}
/* Parse an argument that can be expressed as a keyword.