* config/tc-mips.c (file_mips_soft_float, file_mips_single_float):
New statics. (OPTION_ELF_BASE): Make room for new option macros. (OPTION_SOFT_FLOAT, OPTION_HARD_FLOAT, OPTION_SINGLE_FLOAT, OPTION_DOUBLE_FLOAT): New option macros. (md_longopts): Add msoft-float, mhard-float, msingle-float and mdouble-float. (md_parse_option): Handle OPTION_SINGLE_FLOAT, OPTION_DOUBLE_FLOAT, OPTION_SOFT_FLOAT and OPTION_HARD_FLOAT. (md_show_usage): Add -msoft-float, -mhard-float, -msingle-float and -mdouble-float. (struct mips_set_options): New fields soft_float and single_float. (mips_opts): Initialized them. Add comment for each field initializer. (mips_after_parse_args): Set them based on file_mips_soft_float and file_mips_single_float. (s_mipsset): Add support for `.set softfloat', `.set hardfloat', `.set singlefloat' and `.set doublefloat'. (is_opcode_valid): New function to invoke OPCODE_IS_MEMBER. Handle single-float and soft-float instructions here. (macro_build, mips_ip): Use it instead of OPCODE_IS_MEMBER. (is_opcode_valid_16): New function. (mips16_ip): Use it instead of OPCODE_IS_MEMBER. (macro) <M_LDC1_AB, M_SDC1_AB, M_L_DOB, M_L_DAB, M_S_DAB, M_S_DOB>: Remove special-casing of r4650. * doc/c-mips.texi (-march=): Add Octeon. (MIPS Opts): Document -msoft-float and -mhard-float. Document -msingle-float and -mdouble-float. (MIPS floating-point): New section. Document `.set softfloat' and `.set hardfloat'. Document `.set singlefloat' and `.set doublefloat'.
This commit is contained in:
Adam Nemet
parent
39c5c16818
commit
037b32b9ff
@ -1,3 +1,37 @@
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2008-04-28 Adam Nemet <anemet@caviumnetworks.com>
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* config/tc-mips.c (file_mips_soft_float, file_mips_single_float):
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New statics.
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(OPTION_ELF_BASE): Make room for new option macros.
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(OPTION_SOFT_FLOAT, OPTION_HARD_FLOAT, OPTION_SINGLE_FLOAT,
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OPTION_DOUBLE_FLOAT): New option macros.
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(md_longopts): Add msoft-float, mhard-float, msingle-float and
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mdouble-float.
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(md_parse_option): Handle OPTION_SINGLE_FLOAT,
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OPTION_DOUBLE_FLOAT, OPTION_SOFT_FLOAT and OPTION_HARD_FLOAT.
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(md_show_usage): Add -msoft-float, -mhard-float, -msingle-float
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and -mdouble-float.
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(struct mips_set_options): New fields soft_float and single_float.
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(mips_opts): Initialized them. Add comment for each field
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initializer.
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(mips_after_parse_args): Set them based on file_mips_soft_float
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and file_mips_single_float.
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(s_mipsset): Add support for `.set softfloat', `.set hardfloat',
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`.set singlefloat' and `.set doublefloat'.
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(is_opcode_valid): New function to invoke OPCODE_IS_MEMBER.
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Handle single-float and soft-float instructions here.
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(macro_build, mips_ip): Use it instead of OPCODE_IS_MEMBER.
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(is_opcode_valid_16): New function.
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(mips16_ip): Use it instead of OPCODE_IS_MEMBER.
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(macro) <M_LDC1_AB, M_SDC1_AB, M_L_DOB, M_L_DAB, M_S_DAB,
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M_S_DOB>: Remove special-casing of r4650.
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* doc/c-mips.texi (-march=): Add Octeon.
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(MIPS Opts): Document -msoft-float and -mhard-float. Document
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-msingle-float and -mdouble-float.
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(MIPS floating-point): New section. Document `.set softfloat' and
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`.set hardfloat'. Document `.set singlefloat' and `.set
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doublefloat'.
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2008-04-25 David S. Miller <davem@davemloft.net>
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* config/tc-sparc.c: Accept 'softint_clear' and 'softint_set'
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@ -235,21 +235,41 @@ struct mips_set_options
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int arch;
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/* True if ".set sym32" is in effect. */
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bfd_boolean sym32;
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/* True if floating-point operations are not allowed. Changed by .set
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softfloat or .set hardfloat, by command line options -msoft-float or
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-mhard-float. The default is false. */
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bfd_boolean soft_float;
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/* True if only single-precision floating-point operations are allowed.
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Changed by .set singlefloat or .set doublefloat, command-line options
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-msingle-float or -mdouble-float. The default is false. */
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bfd_boolean single_float;
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};
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/* This is the struct we use to hold the current set of options. Note
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that we must set the isa field to ISA_UNKNOWN and the ASE fields to
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-1 to indicate that they have not been initialized. */
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/* True if -mgp32 was passed. */
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static int file_mips_gp32 = -1;
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/* True if -mfp32 was passed. */
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static int file_mips_fp32 = -1;
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/* This is the struct we use to hold the current set of options. Note
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that we must set the isa field to ISA_UNKNOWN and the ASE fields to
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-1 to indicate that they have not been initialized. */
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/* 1 if -msoft-float, 0 if -mhard-float. The default is 0. */
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static int file_mips_soft_float = 0;
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/* 1 if -msingle-float, 0 if -mdouble-float. The default is 0. */
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static int file_mips_single_float = 0;
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static struct mips_set_options mips_opts =
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{
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ISA_UNKNOWN, -1, -1, 0, -1, -1, -1, -1, 0, ATREG, 0, 0, 0, 0, 0, 0, CPU_UNKNOWN, FALSE
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/* isa */ ISA_UNKNOWN, /* ase_mips3d */ -1, /* ase_mdmx */ -1,
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/* ase_smartmips */ 0, /* ase_dsp */ -1, /* ase_dspr2 */ -1, /* ase_mt */ -1,
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/* mips16 */ -1, /* noreorder */ 0, /* at */ ATREG,
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/* warn_about_macros */ 0, /* nomove */ 0, /* nobopt */ 0,
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/* noautoextend */ 0, /* gp32 */ 0, /* fp32 */ 0, /* arch */ CPU_UNKNOWN,
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/* sym32 */ FALSE, /* soft_float */ FALSE, /* single_float */ FALSE
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};
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/* These variables are filled in with the masks of registers used.
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@ -1750,6 +1770,71 @@ reg_lookup (char **s, unsigned int types, unsigned int *regnop)
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return reg >= 0;
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}
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/* Return TRUE if opcode MO is valid on the currently selected ISA and
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architecture. If EXPANSIONP is TRUE then this check is done while
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expanding a macro. Use is_opcode_valid_16 for MIPS16 opcodes. */
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static bfd_boolean
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is_opcode_valid (const struct mips_opcode *mo, bfd_boolean expansionp)
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{
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int isa = mips_opts.isa;
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int fp_s, fp_d;
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if (mips_opts.ase_mdmx)
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isa |= INSN_MDMX;
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if (mips_opts.ase_dsp)
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isa |= INSN_DSP;
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if (mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE)
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isa |= INSN_DSP64;
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if (mips_opts.ase_dspr2)
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isa |= INSN_DSPR2;
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if (mips_opts.ase_mt)
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isa |= INSN_MT;
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if (mips_opts.ase_mips3d)
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isa |= INSN_MIPS3D;
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if (mips_opts.ase_smartmips)
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isa |= INSN_SMARTMIPS;
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/* For user code we don't check for mips_opts.mips16 since we want
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to allow jalx if -mips16 was specified on the command line. */
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if (expansionp ? mips_opts.mips16 : file_ase_mips16)
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isa |= INSN_MIPS16;
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if (!OPCODE_IS_MEMBER (mo, isa, mips_opts.arch))
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return FALSE;
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/* Check whether the instruction or macro requires single-precision or
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double-precision floating-point support. Note that this information is
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stored differently in the opcode table for insns and macros. */
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if (mo->pinfo == INSN_MACRO)
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{
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fp_s = mo->pinfo2 & INSN2_M_FP_S;
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fp_d = mo->pinfo2 & INSN2_M_FP_D;
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}
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else
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{
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fp_s = mo->pinfo & FP_S;
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fp_d = mo->pinfo & FP_D;
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}
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if (fp_d && (mips_opts.soft_float || mips_opts.single_float))
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return FALSE;
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if (fp_s && mips_opts.soft_float)
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return FALSE;
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return TRUE;
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}
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/* Return TRUE if the MIPS16 opcode MO is valid on the currently
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selected ISA and architecture. */
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static bfd_boolean
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is_opcode_valid_16 (const struct mips_opcode *mo)
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{
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return OPCODE_IS_MEMBER (mo, mips_opts.isa, mips_opts.arch) ? TRUE : FALSE;
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}
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/* This function is called once, at assembler startup time. It should set up
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all the tables, etc. that the MD part of the assembler will need. */
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@ -3367,16 +3452,7 @@ macro_build (expressionS *ep, const char *name, const char *fmt, ...)
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macros will never generate MDMX, MIPS-3D, or MT instructions. */
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if (strcmp (fmt, mo->args) == 0
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&& mo->pinfo != INSN_MACRO
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&& OPCODE_IS_MEMBER (mo,
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(mips_opts.isa
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| (mips_opts.mips16 ? INSN_MIPS16 : 0)
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| (mips_opts.ase_dsp ? INSN_DSP : 0)
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| ((mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE)
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? INSN_DSP64 : 0)
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| (mips_opts.ase_dspr2 ? INSN_DSPR2 : 0)
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| (mips_opts.ase_smartmips ? INSN_SMARTMIPS : 0)),
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mips_opts.arch)
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&& (mips_opts.arch != CPU_R4650 || (mo->pinfo & FP_D) == 0))
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&& is_opcode_valid (mo, TRUE))
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break;
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++mo;
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@ -6120,11 +6196,6 @@ macro (struct mips_cl_insn *ip)
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lr = 1;
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goto ld;
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case M_LDC1_AB:
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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s = "ldc1";
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/* Itbl support may require additional care here. */
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coproc = 1;
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@ -6211,11 +6282,6 @@ macro (struct mips_cl_insn *ip)
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s = "cache";
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goto st;
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case M_SDC1_AB:
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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s = "sdc1";
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coproc = 1;
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/* Itbl support may require additional care here. */
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@ -6757,11 +6823,6 @@ macro (struct mips_cl_insn *ip)
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}
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case M_L_DOB:
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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/* Even on a big endian machine $fn comes before $fn+1. We have
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to adjust when loading from memory. */
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r = BFD_RELOC_LO16;
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@ -6788,11 +6849,6 @@ macro (struct mips_cl_insn *ip)
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* But, the resulting address is the same after relocation so why
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* generate the extra instruction?
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*/
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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/* Itbl support may require additional care here. */
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coproc = 1;
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if (mips_opts.isa != ISA_MIPS1)
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@ -6806,12 +6862,6 @@ macro (struct mips_cl_insn *ip)
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goto ldd_std;
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case M_S_DAB:
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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if (mips_opts.isa != ISA_MIPS1)
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{
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s = "sdc1";
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@ -7456,11 +7506,6 @@ macro2 (struct mips_cl_insn *ip)
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break;
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case M_S_DOB:
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if (mips_opts.arch == CPU_R4650)
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{
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as_bad (_("opcode not supported on this processor"));
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break;
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}
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assert (mips_opts.isa == ISA_MIPS1);
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/* Even on a big endian machine $fn comes before $fn+1. We have
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to adjust when storing to memory. */
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@ -8452,31 +8497,7 @@ mips_ip (char *str, struct mips_cl_insn *ip)
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assert (strcmp (insn->name, str) == 0);
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if (OPCODE_IS_MEMBER (insn,
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(mips_opts.isa
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/* We don't check for mips_opts.mips16 here since
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we want to allow jalx if -mips16 was specified
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on the command line. */
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| (file_ase_mips16 ? INSN_MIPS16 : 0)
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| (mips_opts.ase_mdmx ? INSN_MDMX : 0)
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| (mips_opts.ase_dsp ? INSN_DSP : 0)
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| ((mips_opts.ase_dsp && ISA_SUPPORTS_DSP64_ASE)
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? INSN_DSP64 : 0)
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| (mips_opts.ase_dspr2 ? INSN_DSPR2 : 0)
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| (mips_opts.ase_mt ? INSN_MT : 0)
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| (mips_opts.ase_mips3d ? INSN_MIPS3D : 0)
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| (mips_opts.ase_smartmips ? INSN_SMARTMIPS : 0)),
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mips_opts.arch))
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ok = TRUE;
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else
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ok = FALSE;
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if (insn->pinfo != INSN_MACRO)
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{
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if (mips_opts.arch == CPU_R4650 && (insn->pinfo & FP_D) != 0)
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ok = FALSE;
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}
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ok = is_opcode_valid (insn, FALSE);
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if (! ok)
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{
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if (insn + 1 < &mips_opcodes[NUMOPCODES]
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@ -9824,11 +9845,7 @@ mips16_ip (char *str, struct mips_cl_insn *ip)
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assert (strcmp (insn->name, str) == 0);
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if (OPCODE_IS_MEMBER (insn, mips_opts.isa, mips_opts.arch))
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ok = TRUE;
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else
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ok = FALSE;
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ok = is_opcode_valid_16 (insn);
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if (! ok)
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{
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if (insn + 1 < &mips16_opcodes[bfd_mips16_num_opcodes]
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@ -10957,10 +10974,18 @@ struct option md_longopts[] =
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#define OPTION_MNO_SYM32 (OPTION_MISC_BASE + 15)
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{"msym32", no_argument, NULL, OPTION_MSYM32},
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{"mno-sym32", no_argument, NULL, OPTION_MNO_SYM32},
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#define OPTION_SOFT_FLOAT (OPTION_MISC_BASE + 16)
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#define OPTION_HARD_FLOAT (OPTION_MISC_BASE + 17)
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{"msoft-float", no_argument, NULL, OPTION_SOFT_FLOAT},
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{"mhard-float", no_argument, NULL, OPTION_HARD_FLOAT},
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#define OPTION_SINGLE_FLOAT (OPTION_MISC_BASE + 18)
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#define OPTION_DOUBLE_FLOAT (OPTION_MISC_BASE + 19)
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{"msingle-float", no_argument, NULL, OPTION_SINGLE_FLOAT},
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{"mdouble-float", no_argument, NULL, OPTION_DOUBLE_FLOAT},
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/* ELF-specific options. */
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#ifdef OBJ_ELF
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#define OPTION_ELF_BASE (OPTION_MISC_BASE + 16)
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#define OPTION_ELF_BASE (OPTION_MISC_BASE + 20)
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#define OPTION_CALL_SHARED (OPTION_ELF_BASE + 0)
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{"KPIC", no_argument, NULL, OPTION_CALL_SHARED},
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{"call_shared", no_argument, NULL, OPTION_CALL_SHARED},
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@ -11320,6 +11345,22 @@ md_parse_option (int c, char *arg)
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file_mips_fp32 = 0;
|
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break;
|
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|
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case OPTION_SINGLE_FLOAT:
|
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file_mips_single_float = 1;
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break;
|
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|
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case OPTION_DOUBLE_FLOAT:
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file_mips_single_float = 0;
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break;
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|
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case OPTION_SOFT_FLOAT:
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file_mips_soft_float = 1;
|
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break;
|
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|
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case OPTION_HARD_FLOAT:
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file_mips_soft_float = 0;
|
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break;
|
||||
|
||||
#ifdef OBJ_ELF
|
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case OPTION_MABI:
|
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if (!IS_ELF)
|
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@ -11597,6 +11638,8 @@ mips_after_parse_args (void)
|
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file_ase_mt = mips_opts.ase_mt;
|
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mips_opts.gp32 = file_mips_gp32;
|
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mips_opts.fp32 = file_mips_fp32;
|
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mips_opts.soft_float = file_mips_soft_float;
|
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mips_opts.single_float = file_mips_single_float;
|
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|
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if (mips_flag_mdebug < 0)
|
||||
{
|
||||
@ -12473,6 +12516,14 @@ s_mipsset (int x ATTRIBUTE_UNUSED)
|
||||
mips_cpu_info_from_isa (mips_opts.isa)->name);
|
||||
mips_opts.fp32 = 0;
|
||||
}
|
||||
else if (strcmp (name, "softfloat") == 0)
|
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mips_opts.soft_float = 1;
|
||||
else if (strcmp (name, "hardfloat") == 0)
|
||||
mips_opts.soft_float = 0;
|
||||
else if (strcmp (name, "singlefloat") == 0)
|
||||
mips_opts.single_float = 1;
|
||||
else if (strcmp (name, "doublefloat") == 0)
|
||||
mips_opts.single_float = 0;
|
||||
else if (strcmp (name, "mips16") == 0
|
||||
|| strcmp (name, "MIPS-16") == 0)
|
||||
mips_opts.mips16 = 1;
|
||||
@ -15094,9 +15145,15 @@ MIPS options:\n\
|
||||
-msym32 assume all symbols have 32-bit values\n\
|
||||
-O0 remove unneeded NOPs, do not swap branches\n\
|
||||
-O remove unneeded NOPs and swap branches\n\
|
||||
--[no-]construct-floats [dis]allow floating point values to be constructed\n\
|
||||
--trap, --no-break trap exception on div by 0 and mult overflow\n\
|
||||
--break, --no-trap break exception on div by 0 and mult overflow\n"));
|
||||
fprintf (stream, _("\
|
||||
-mhard-float allow floating-point instructions\n\
|
||||
-msoft-float do not allow floating-point instructions\n\
|
||||
-msingle-float only allow 32-bit floating-point operations\n\
|
||||
-mdouble-float allow 32-bit and 64-bit floating-point operations\n\
|
||||
--[no-]construct-floats [dis]allow floating point values to be constructed\n"
|
||||
));
|
||||
#ifdef OBJ_ELF
|
||||
fprintf (stream, _("\
|
||||
-KPIC, -call_shared generate SVR4 position independent code\n\
|
||||
|
||||
@ -32,6 +32,7 @@ Assembly Language Programming'' in the same work.
|
||||
* MIPS option stack:: Directives to save and restore options
|
||||
* MIPS ASE instruction generation overrides:: Directives to control
|
||||
generation of MIPS ASE instructions
|
||||
* MIPS floating-point:: Directives to override floating-point options
|
||||
@end menu
|
||||
|
||||
@node MIPS Opts
|
||||
@ -272,7 +273,8 @@ m4kp,
|
||||
sb1,
|
||||
sb1a,
|
||||
loongson2e,
|
||||
loongson2f
|
||||
loongson2f,
|
||||
octeon
|
||||
@end quotation
|
||||
|
||||
For compatibility reasons, @samp{@var{n}x} and @samp{@var{b}fx} are
|
||||
@ -301,10 +303,21 @@ other assemblers, which use it to turn off C style preprocessing. With
|
||||
@sc{gnu} @code{@value{AS}}, there is no need for @samp{-nocpp}, because the
|
||||
@sc{gnu} assembler itself never runs the C preprocessor.
|
||||
|
||||
@item -msoft-float
|
||||
@itemx -mhard-float
|
||||
Disable or enable floating-point instructions. Note that by default
|
||||
floating-point instructions are always allowed even with CPU targets
|
||||
that don't have support for these instructions.
|
||||
|
||||
@item -msingle-float
|
||||
@itemx -mdouble-float
|
||||
Disable or enable double-precision floating-point operations. Note
|
||||
that by default double-precision floating-point operations are always
|
||||
allowed even with CPU targets that don't have support for these
|
||||
operations.
|
||||
|
||||
@item --construct-floats
|
||||
@itemx --no-construct-floats
|
||||
@cindex --construct-floats
|
||||
@cindex --no-construct-floats
|
||||
The @code{--no-construct-floats} option disables the construction of
|
||||
double width floating point constants by loading the two halves of the
|
||||
value into the two single width floating point registers that make up
|
||||
@ -579,3 +592,26 @@ in the assembly. The @code{.set nomt} directive prevents MT
|
||||
instructions from being accepted.
|
||||
|
||||
Traditional @sc{mips} assemblers do not support these directives.
|
||||
|
||||
@node MIPS floating-point
|
||||
@section Directives to override floating-point options
|
||||
|
||||
@cindex Disable floating-point instructions
|
||||
@kindex @code{.set softfloat}
|
||||
@kindex @code{.set hardfloat}
|
||||
The directives @code{.set softfloat} and @code{.set hardfloat} provide
|
||||
finer control of disabling and enabling float-point instructions.
|
||||
These directives always override the default (that hard-float
|
||||
instructions are accepted) or the command-line options
|
||||
(@samp{-msoft-float} and @samp{-mhard-float}).
|
||||
|
||||
@cindex Disable single-precision floating-point operations
|
||||
@kindex @code{.set softfloat}
|
||||
@kindex @code{.set hardfloat}
|
||||
The directives @code{.set singlefloat} and @code{.set doublefloat}
|
||||
provide finer control of disabling and enabling double-precision
|
||||
float-point operations. These directives always override the default
|
||||
(that double-precision operations are accepted) or the command-line
|
||||
options (@samp{-msingle-float} and @samp{-mdouble-float}).
|
||||
|
||||
Traditional @sc{mips} assemblers do not support these directives.
|
||||
|
||||
Loading…
Reference in New Issue
Block a user