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 *));
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
{
/* 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. */
/* The assembled opcode of `last_insn'. */
static unsigned long last_opcode;
\f
+/* 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);
+ }
+}
+\f
/* Main entry point to assemble one instruction. */
void
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. */
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;
-
- 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"));
-
- low32 = the_insn.exp.X_add_number;
-
- if (low32 < 0)
- {
- int rd = (the_insn.opcode & RD (~0)) >> 25;
- int 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);
- return;
- }
- }
- /* FALLTHROUGH */
-
- 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;
- }
- }
-
- /* 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);
- }
+ switch (special_case)
+ {
+ case SPECIAL_CASE_NONE:
+ /* normal insn */
+ output_insn (insn, &the_insn);
+ break;
- 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);
- }
+ case SPECIAL_CASE_SETSW:
+ synthetize_setsw (insn);
+ break;
+
+ case SPECIAL_CASE_SET:
+ synthetize_setuw (insn);
+ break;
- 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;
+ case SPECIAL_CASE_SETX:
+ synthetize_setx (insn);
+ break;
+
+ case SPECIAL_CASE_FDIV:
+ {
+ int rd = (the_insn.opcode >> 25) & 0x1f;
- output_insn (insn, &the_insn);
+ 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;
- }
+ /* 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;
int match = 0;
int comma = 0;
int v9_arg_p;
+ int special_case = SPECIAL_CASE_NONE;
s = str;
if (islower ((unsigned char) *s))
if (insn == NULL)
{
as_bad (_("Unknown opcode: `%s'"), str);
- return;
+ return special_case;
}
if (comma)
{
goto error;
case 'g': /* global register */
- if (isoctal (c = *s++))
+ c = *s++;
+ if (isoctal (c))
{
mask = c - '0';
break;
goto error;
case 'i': /* in register */
- if (isoctal (c = *s++))
+ c = *s++;
+ if (isoctal (c))
{
mask = c - '0' + 24;
break;
goto error;
case 'l': /* local register */
- if (isoctal (c = *s++))
+ c = *s++;
+ if (isoctal (c))
{
mask = (c - '0' + 16);
break;
goto error;
case 'o': /* out register */
- if (isoctal (c = *s++))
+ c = *s++;
+ if (isoctal (c))
{
mask = (c - '0' + 8);
break;
if (s[o->len + 1] != '(')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), o->name);
- return;
+ return special_case;
}
op_arg = o->name;
if (*s1 != ')')
{
as_bad (_("Illegal operands: %%%s requires arguments in ()"), op_arg);
- return;
+ return special_case;
}
*s1 = '\0';
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;
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
{
|| 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;
}
else
{
as_bad (_("Illegal operands%s"), error_message);
- return;
+ return special_case;
}
}
else
as_tsktsk (_(" (Requires %s; requested architecture is %s.)"),
required_archs,
sparc_opcode_archs[max_architecture].name);
- return;
+ return special_case;
}
} /* if no match */
} /* forever looking for a match */
the_insn.opcode = opcode;
+ return special_case;
}
/* Parse an argument that can be expressed as a keyword.
projects / platform / upstream / binutils.git / commitdiff