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https://github.com/Stichting-MINIX-Research-Foundation/netbsd.git
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304 lines
8.5 KiB
C
304 lines
8.5 KiB
C
/* Common hooks for IBM RS/6000.
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Copyright (C) 1991-2013 Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published
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by the Free Software Foundation; either version 3, or (at your
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option) any later version.
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GCC is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public
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License for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#include "config.h"
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#include "system.h"
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#include "coretypes.h"
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#include "diagnostic-core.h"
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#include "tm.h"
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#include "common/common-target.h"
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#include "common/common-target-def.h"
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#include "opts.h"
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#include "flags.h"
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#include "params.h"
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/* Implement TARGET_OPTION_OPTIMIZATION_TABLE. */
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static const struct default_options rs6000_option_optimization_table[] =
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{
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{ OPT_LEVELS_1_PLUS, OPT_fomit_frame_pointer, NULL, 1 },
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{ OPT_LEVELS_NONE, 0, NULL, 0 }
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};
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/* Implement TARGET_OPTION_INIT_STRUCT. */
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static void
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rs6000_option_init_struct (struct gcc_options *opts)
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{
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if (DEFAULT_ABI == ABI_DARWIN)
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/* The Darwin libraries never set errno, so we might as well
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avoid calling them when that's the only reason we would. */
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opts->x_flag_errno_math = 0;
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/* Enable section anchors by default. */
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if (!TARGET_MACHO)
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opts->x_flag_section_anchors = 1;
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}
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/* Implement TARGET_OPTION_DEFAULT_PARAMS. */
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static void
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rs6000_option_default_params (void)
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{
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/* Double growth factor to counter reduced min jump length. */
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set_default_param_value (PARAM_MAX_GROW_COPY_BB_INSNS, 16);
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}
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/* If not otherwise specified by a target, make 'long double' equivalent to
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'double'. */
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#ifndef RS6000_DEFAULT_LONG_DOUBLE_SIZE
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#define RS6000_DEFAULT_LONG_DOUBLE_SIZE 64
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#endif
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/* Implement TARGET_HANDLE_OPTION. */
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static bool
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rs6000_handle_option (struct gcc_options *opts, struct gcc_options *opts_set,
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const struct cl_decoded_option *decoded,
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location_t loc)
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{
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enum fpu_type_t fpu_type = FPU_NONE;
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char *p, *q;
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size_t code = decoded->opt_index;
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const char *arg = decoded->arg;
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int value = decoded->value;
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switch (code)
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{
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case OPT_mfull_toc:
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_MINIMAL_TOC;
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opts->x_TARGET_NO_FP_IN_TOC = 0;
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opts->x_TARGET_NO_SUM_IN_TOC = 0;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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#ifdef TARGET_USES_SYSV4_OPT
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/* Note, V.4 no longer uses a normal TOC, so make -mfull-toc, be
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just the same as -mminimal-toc. */
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opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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#endif
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break;
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#ifdef TARGET_USES_SYSV4_OPT
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case OPT_mtoc:
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/* Make -mtoc behave like -mminimal-toc. */
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opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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break;
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#endif
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#ifdef TARGET_USES_AIX64_OPT
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case OPT_maix64:
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#else
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case OPT_m64:
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#endif
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opts->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
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opts->x_rs6000_isa_flags |= (~opts_set->x_rs6000_isa_flags
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& OPTION_MASK_PPC_GFXOPT);
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
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break;
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#ifdef TARGET_USES_AIX64_OPT
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case OPT_maix32:
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#else
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case OPT_m32:
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#endif
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_POWERPC64;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_POWERPC64;
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break;
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case OPT_mminimal_toc:
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if (value == 1)
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{
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opts->x_TARGET_NO_FP_IN_TOC = 0;
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opts->x_TARGET_NO_SUM_IN_TOC = 0;
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}
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break;
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case OPT_mpowerpc_gpopt:
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case OPT_mpowerpc_gfxopt:
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break;
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case OPT_mdebug_:
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p = ASTRDUP (arg);
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opts->x_rs6000_debug = 0;
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while ((q = strtok (p, ",")) != NULL)
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{
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unsigned mask = 0;
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bool invert;
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p = NULL;
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if (*q == '!')
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{
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invert = true;
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q++;
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}
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else
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invert = false;
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if (! strcmp (q, "all"))
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mask = MASK_DEBUG_ALL;
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else if (! strcmp (q, "stack"))
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mask = MASK_DEBUG_STACK;
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else if (! strcmp (q, "arg"))
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mask = MASK_DEBUG_ARG;
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else if (! strcmp (q, "reg"))
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mask = MASK_DEBUG_REG;
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else if (! strcmp (q, "addr"))
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mask = MASK_DEBUG_ADDR;
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else if (! strcmp (q, "cost"))
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mask = MASK_DEBUG_COST;
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else if (! strcmp (q, "target"))
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mask = MASK_DEBUG_TARGET;
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else if (! strcmp (q, "builtin"))
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mask = MASK_DEBUG_BUILTIN;
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else
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error_at (loc, "unknown -mdebug-%s switch", q);
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if (invert)
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opts->x_rs6000_debug &= ~mask;
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else
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opts->x_rs6000_debug |= mask;
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}
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break;
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#ifdef TARGET_USES_SYSV4_OPT
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case OPT_mrelocatable:
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if (value == 1)
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{
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opts->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_MINIMAL_TOC;
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opts->x_TARGET_NO_FP_IN_TOC = 1;
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}
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break;
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case OPT_mrelocatable_lib:
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if (value == 1)
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{
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opts->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
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| OPTION_MASK_MINIMAL_TOC);
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opts_set->x_rs6000_isa_flags |= (OPTION_MASK_RELOCATABLE
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| OPTION_MASK_MINIMAL_TOC);
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opts->x_TARGET_NO_FP_IN_TOC = 1;
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}
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else
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{
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_RELOCATABLE;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_RELOCATABLE;
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}
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break;
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#endif
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case OPT_mabi_altivec:
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/* Enabling the AltiVec ABI turns off the SPE ABI. */
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opts->x_rs6000_spe_abi = 0;
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break;
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case OPT_mabi_spe:
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opts->x_rs6000_altivec_abi = 0;
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break;
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case OPT_mlong_double_:
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if (value != 64 && value != 128)
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{
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error_at (loc, "unknown switch -mlong-double-%s", arg);
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opts->x_rs6000_long_double_type_size
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= RS6000_DEFAULT_LONG_DOUBLE_SIZE;
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return false;
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}
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break;
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case OPT_msingle_float:
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if (!TARGET_SINGLE_FPU)
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warning_at (loc, 0,
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"-msingle-float option equivalent to -mhard-float");
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/* -msingle-float implies -mno-double-float and TARGET_HARD_FLOAT. */
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opts->x_rs6000_double_float = 0;
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
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break;
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case OPT_mdouble_float:
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/* -mdouble-float implies -msingle-float and TARGET_HARD_FLOAT. */
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opts->x_rs6000_single_float = 1;
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
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break;
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case OPT_msimple_fpu:
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if (!TARGET_SINGLE_FPU)
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warning_at (loc, 0, "-msimple-fpu option ignored");
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break;
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case OPT_mhard_float:
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/* -mhard_float implies -msingle-float and -mdouble-float. */
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opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
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break;
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case OPT_msoft_float:
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/* -msoft_float implies -mnosingle-float and -mnodouble-float. */
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opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
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break;
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case OPT_mfpu_:
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fpu_type = (enum fpu_type_t) value;
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if (fpu_type != FPU_NONE)
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{
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/* If -mfpu is not none, then turn off SOFT_FLOAT, turn on
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HARD_FLOAT. */
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opts->x_rs6000_isa_flags &= ~OPTION_MASK_SOFT_FLOAT;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
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opts->x_rs6000_xilinx_fpu = 1;
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if (fpu_type == FPU_SF_LITE || fpu_type == FPU_SF_FULL)
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opts->x_rs6000_single_float = 1;
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if (fpu_type == FPU_DF_LITE || fpu_type == FPU_DF_FULL)
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opts->x_rs6000_single_float = opts->x_rs6000_double_float = 1;
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if (fpu_type == FPU_SF_LITE || fpu_type == FPU_DF_LITE)
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opts->x_rs6000_simple_fpu = 1;
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}
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else
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{
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/* -mfpu=none is equivalent to -msoft-float. */
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opts->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
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opts_set->x_rs6000_isa_flags |= OPTION_MASK_SOFT_FLOAT;
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opts->x_rs6000_single_float = opts->x_rs6000_double_float = 0;
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}
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break;
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case OPT_mrecip:
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opts->x_rs6000_recip_name = (value) ? "default" : "none";
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break;
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}
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return true;
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}
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#undef TARGET_HANDLE_OPTION
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#define TARGET_HANDLE_OPTION rs6000_handle_option
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#undef TARGET_OPTION_INIT_STRUCT
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#define TARGET_OPTION_INIT_STRUCT rs6000_option_init_struct
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#undef TARGET_OPTION_DEFAULT_PARAMS
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#define TARGET_OPTION_DEFAULT_PARAMS rs6000_option_default_params
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#undef TARGET_OPTION_OPTIMIZATION_TABLE
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#define TARGET_OPTION_OPTIMIZATION_TABLE rs6000_option_optimization_table
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struct gcc_targetm_common targetm_common = TARGETM_COMMON_INITIALIZER;
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