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Diffstat (limited to 'gcc-4.2.1-5666.3/gcc/genmodes.c')
| -rw-r--r-- | gcc-4.2.1-5666.3/gcc/genmodes.c | 1300 |
1 files changed, 0 insertions, 1300 deletions
diff --git a/gcc-4.2.1-5666.3/gcc/genmodes.c b/gcc-4.2.1-5666.3/gcc/genmodes.c deleted file mode 100644 index 0a70dea23..000000000 --- a/gcc-4.2.1-5666.3/gcc/genmodes.c +++ /dev/null @@ -1,1300 +0,0 @@ -/* Generate the machine mode enumeration and associated tables. - Copyright (C) 2003, 2004 - Free Software Foundation, Inc. - -This file is part of GCC. - -GCC is free software; you can redistribute it and/or modify it under -the terms of the GNU General Public License as published by the Free -Software Foundation; either version 2, or (at your option) any later -version. - -GCC is distributed in the hope that it will be useful, but WITHOUT ANY -WARRANTY; without even the implied warranty of MERCHANTABILITY or -FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License -for more details. - -You should have received a copy of the GNU General Public License -along with GCC; see the file COPYING. If not, write to the Free -Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA -02110-1301, USA. */ - -#include "bconfig.h" -#include "system.h" -#include "errors.h" -#include "hashtab.h" - -/* enum mode_class is normally defined by machmode.h but we can't - include that header here. */ -#include "mode-classes.def" - -#define DEF_MODE_CLASS(M) M -enum mode_class { MODE_CLASSES, MAX_MODE_CLASS }; -#undef DEF_MODE_CLASS - -/* Text names of mode classes, for output. */ -#define DEF_MODE_CLASS(M) #M -static const char *const mode_class_names[MAX_MODE_CLASS] = -{ - MODE_CLASSES -}; -#undef DEF_MODE_CLASS -#undef MODE_CLASSES - -#ifdef EXTRA_MODES_FILE -# define HAVE_EXTRA_MODES 1 -#else -# define HAVE_EXTRA_MODES 0 -# define EXTRA_MODES_FILE "" -#endif - -/* Data structure for building up what we know about a mode. - They're clustered by mode class. */ -struct mode_data -{ - struct mode_data *next; /* next this class - arbitrary order */ - - const char *name; /* printable mode name -- SI, not SImode */ - enum mode_class cl; /* this mode class */ - unsigned int precision; /* size in bits, equiv to TYPE_PRECISION */ - unsigned int bytesize; /* storage size in addressable units */ - unsigned int ncomponents; /* number of subunits */ - unsigned int alignment; /* mode alignment */ - const char *format; /* floating point format - float modes only */ - - struct mode_data *component; /* mode of components */ - struct mode_data *wider; /* next wider mode */ - struct mode_data *wider_2x; /* 2x wider mode */ - - struct mode_data *contained; /* Pointer to list of modes that have - this mode as a component. */ - struct mode_data *next_cont; /* Next mode in that list. */ - - const char *file; /* file and line of definition, */ - unsigned int line; /* for error reporting */ - unsigned int counter; /* Rank ordering of modes */ -}; - -static struct mode_data *modes[MAX_MODE_CLASS]; -static unsigned int n_modes[MAX_MODE_CLASS]; -static struct mode_data *void_mode; - -static const struct mode_data blank_mode = { - 0, "<unknown>", MAX_MODE_CLASS, - -1U, -1U, -1U, -1U, - 0, 0, 0, 0, 0, 0, - "<unknown>", 0, 0 -}; - -static htab_t modes_by_name; - -/* Data structure for recording target-specified runtime adjustments - to a particular mode. We support varying the byte size, the - alignment, and the floating point format. */ -struct mode_adjust -{ - struct mode_adjust *next; - struct mode_data *mode; - const char *adjustment; - - const char *file; - unsigned int line; -}; - -static struct mode_adjust *adj_bytesize; -static struct mode_adjust *adj_alignment; -static struct mode_adjust *adj_format; - -/* Mode class operations. */ -static enum mode_class -complex_class (enum mode_class c) -{ - switch (c) - { - case MODE_INT: return MODE_COMPLEX_INT; - case MODE_FLOAT: return MODE_COMPLEX_FLOAT; - default: - error ("no complex class for class %s", mode_class_names[c]); - return MODE_RANDOM; - } -} - -static enum mode_class -vector_class (enum mode_class cl) -{ - switch (cl) - { - case MODE_INT: return MODE_VECTOR_INT; - case MODE_FLOAT: return MODE_VECTOR_FLOAT; - default: - error ("no vector class for class %s", mode_class_names[cl]); - return MODE_RANDOM; - } -} - -/* Utility routines. */ -static inline struct mode_data * -find_mode (const char *name) -{ - struct mode_data key; - - key.name = name; - return (struct mode_data *) htab_find (modes_by_name, &key); -} - -static struct mode_data * -new_mode (enum mode_class cl, const char *name, - const char *file, unsigned int line) -{ - struct mode_data *m; - static unsigned int count = 0; - - m = find_mode (name); - if (m) - { - error ("%s:%d: duplicate definition of mode \"%s\"", - trim_filename (file), line, name); - error ("%s:%d: previous definition here", m->file, m->line); - return m; - } - - m = XNEW (struct mode_data); - memcpy (m, &blank_mode, sizeof (struct mode_data)); - m->cl = cl; - m->name = name; - if (file) - m->file = trim_filename (file); - m->line = line; - m->counter = count++; - - m->next = modes[cl]; - modes[cl] = m; - n_modes[cl]++; - - *htab_find_slot (modes_by_name, m, INSERT) = m; - - return m; -} - -static hashval_t -hash_mode (const void *p) -{ - const struct mode_data *m = (const struct mode_data *)p; - return htab_hash_string (m->name); -} - -static int -eq_mode (const void *p, const void *q) -{ - const struct mode_data *a = (const struct mode_data *)p; - const struct mode_data *b = (const struct mode_data *)q; - - return !strcmp (a->name, b->name); -} - -#define for_all_modes(C, M) \ - for (C = 0; C < MAX_MODE_CLASS; C++) \ - for (M = modes[C]; M; M = M->next) - -static void ATTRIBUTE_UNUSED -new_adjust (const char *name, - struct mode_adjust **category, const char *catname, - const char *adjustment, - enum mode_class required_class, - const char *file, unsigned int line) -{ - struct mode_data *mode = find_mode (name); - struct mode_adjust *a; - - file = trim_filename (file); - - if (!mode) - { - error ("%s:%d: no mode \"%s\"", file, line, name); - return; - } - - if (required_class != MODE_RANDOM && mode->cl != required_class) - { - error ("%s:%d: mode \"%s\" is not class %s", - file, line, name, mode_class_names[required_class] + 5); - return; - } - - for (a = *category; a; a = a->next) - if (a->mode == mode) - { - error ("%s:%d: mode \"%s\" already has a %s adjustment", - file, line, name, catname); - error ("%s:%d: previous adjustment here", a->file, a->line); - return; - } - - a = XNEW (struct mode_adjust); - a->mode = mode; - a->adjustment = adjustment; - a->file = file; - a->line = line; - - a->next = *category; - *category = a; -} - -/* Diagnose failure to meet expectations in a partially filled out - mode structure. */ -enum requirement { SET, UNSET, OPTIONAL }; - -#define validate_field_(mname, fname, req, val, unset, file, line) do { \ - switch (req) \ - { \ - case SET: \ - if (val == unset) \ - error ("%s:%d: (%s) field %s must be set", \ - file, line, mname, fname); \ - break; \ - case UNSET: \ - if (val != unset) \ - error ("%s:%d: (%s) field %s must not be set", \ - file, line, mname, fname); \ - case OPTIONAL: \ - break; \ - } \ -} while (0) - -#define validate_field(M, F) \ - validate_field_(M->name, #F, r_##F, M->F, blank_mode.F, M->file, M->line) - -static void -validate_mode (struct mode_data *m, - enum requirement r_precision, - enum requirement r_bytesize, - enum requirement r_component, - enum requirement r_ncomponents, - enum requirement r_format) -{ - validate_field (m, precision); - validate_field (m, bytesize); - validate_field (m, component); - validate_field (m, ncomponents); - validate_field (m, format); -} -#undef validate_field -#undef validate_field_ - -/* Given a partially-filled-out mode structure, figure out what we can - and fill the rest of it in; die if it isn't enough. */ -static void -complete_mode (struct mode_data *m) -{ - unsigned int alignment; - - if (!m->name) - { - error ("%s:%d: mode with no name", m->file, m->line); - return; - } - if (m->cl == MAX_MODE_CLASS) - { - error ("%s:%d: %smode has no mode class", m->file, m->line, m->name); - return; - } - - switch (m->cl) - { - case MODE_RANDOM: - /* Nothing more need be said. */ - if (!strcmp (m->name, "VOID")) - void_mode = m; - - validate_mode (m, UNSET, UNSET, UNSET, UNSET, UNSET); - - m->precision = 0; - m->bytesize = 0; - m->ncomponents = 0; - m->component = 0; - break; - - case MODE_CC: - /* Again, nothing more need be said. For historical reasons, - the size of a CC mode is four units. */ - validate_mode (m, UNSET, UNSET, UNSET, UNSET, UNSET); - - m->bytesize = 4; - m->ncomponents = 1; - m->component = 0; - break; - - case MODE_INT: - case MODE_FLOAT: - case MODE_DECIMAL_FLOAT: - /* A scalar mode must have a byte size, may have a bit size, - and must not have components. A float mode must have a - format. */ - validate_mode (m, OPTIONAL, SET, UNSET, UNSET, - m->cl != MODE_INT ? SET : UNSET); - - m->ncomponents = 1; - m->component = 0; - break; - - case MODE_PARTIAL_INT: - /* A partial integer mode uses ->component to say what the - corresponding full-size integer mode is, and may also - specify a bit size. */ - validate_mode (m, OPTIONAL, UNSET, SET, UNSET, UNSET); - - m->bytesize = m->component->bytesize; - - m->ncomponents = 1; - m->component = 0; /* ??? preserve this */ - break; - - case MODE_COMPLEX_INT: - case MODE_COMPLEX_FLOAT: - /* Complex modes should have a component indicated, but no more. */ - validate_mode (m, UNSET, UNSET, SET, UNSET, UNSET); - m->ncomponents = 2; - if (m->component->precision != (unsigned int)-1) - m->precision = 2 * m->component->precision; - m->bytesize = 2 * m->component->bytesize; - break; - - case MODE_VECTOR_INT: - case MODE_VECTOR_FLOAT: - /* Vector modes should have a component and a number of components. */ - validate_mode (m, UNSET, UNSET, SET, SET, UNSET); - if (m->component->precision != (unsigned int)-1) - m->precision = m->ncomponents * m->component->precision; - m->bytesize = m->ncomponents * m->component->bytesize; - break; - - default: - gcc_unreachable (); - } - - /* If not already specified, the mode alignment defaults to the largest - power of two that divides the size of the object. Complex types are - not more aligned than their contents. */ - if (m->cl == MODE_COMPLEX_INT || m->cl == MODE_COMPLEX_FLOAT) - alignment = m->component->bytesize; - else - alignment = m->bytesize; - - m->alignment = alignment & (~alignment + 1); - - /* If this mode has components, make the component mode point back - to this mode, for the sake of adjustments. */ - if (m->component) - { - m->next_cont = m->component->contained; - m->component->contained = m; - } -} - -static void -complete_all_modes (void) -{ - struct mode_data *m; - int cl; - - for_all_modes (cl, m) - complete_mode (m); -} - -/* For each mode in class CLASS, construct a corresponding complex mode. */ -#define COMPLEX_MODES(C) make_complex_modes(MODE_##C, __FILE__, __LINE__) -static void -make_complex_modes (enum mode_class cl, - const char *file, unsigned int line) -{ - struct mode_data *m; - struct mode_data *c; - char buf[8]; - enum mode_class cclass = complex_class (cl); - - if (cclass == MODE_RANDOM) - return; - - for (m = modes[cl]; m; m = m->next) - { - /* Skip BImode. FIXME: BImode probably shouldn't be MODE_INT. */ - if (m->precision == 1) - continue; - - if (strlen (m->name) >= sizeof buf) - { - error ("%s:%d:mode name \"%s\" is too long", - m->file, m->line, m->name); - continue; - } - - /* Float complex modes are named SCmode, etc. - Int complex modes are named CSImode, etc. - This inconsistency should be eliminated. */ - if (cl == MODE_FLOAT) - { - char *p, *q = 0; - strncpy (buf, m->name, sizeof buf); - p = strchr (buf, 'F'); - if (p == 0) - q = strchr (buf, 'D'); - if (p == 0 && q == 0) - { - error ("%s:%d: float mode \"%s\" has no 'F' or 'D'", - m->file, m->line, m->name); - continue; - } - - if (p != 0) - *p = 'C'; - else - snprintf (buf, sizeof buf, "C%s", m->name); - } - else - snprintf (buf, sizeof buf, "C%s", m->name); - - c = new_mode (cclass, xstrdup (buf), file, line); - c->component = m; - } -} - -/* For all modes in class CL, construct vector modes of width - WIDTH, having as many components as necessary. */ -#define VECTOR_MODES(C, W) make_vector_modes(MODE_##C, W, __FILE__, __LINE__) -static void ATTRIBUTE_UNUSED -make_vector_modes (enum mode_class cl, unsigned int width, - const char *file, unsigned int line) -{ - struct mode_data *m; - struct mode_data *v; - char buf[8]; - unsigned int ncomponents; - enum mode_class vclass = vector_class (cl); - - if (vclass == MODE_RANDOM) - return; - - for (m = modes[cl]; m; m = m->next) - { - /* Do not construct vector modes with only one element, or - vector modes where the element size doesn't divide the full - size evenly. */ - ncomponents = width / m->bytesize; - if (ncomponents < 2) - continue; - if (width % m->bytesize) - continue; - - /* Skip QFmode and BImode. FIXME: this special case should - not be necessary. */ - if (cl == MODE_FLOAT && m->bytesize == 1) - continue; - if (cl == MODE_INT && m->precision == 1) - continue; - - if ((size_t)snprintf (buf, sizeof buf, "V%u%s", ncomponents, m->name) - >= sizeof buf) - { - error ("%s:%d: mode name \"%s\" is too long", - m->file, m->line, m->name); - continue; - } - - v = new_mode (vclass, xstrdup (buf), file, line); - v->component = m; - v->ncomponents = ncomponents; - } -} - -/* Input. */ - -#define _SPECIAL_MODE(C, N) make_special_mode(MODE_##C, #N, __FILE__, __LINE__) -#define RANDOM_MODE(N) _SPECIAL_MODE (RANDOM, N) -#define CC_MODE(N) _SPECIAL_MODE (CC, N) - -static void -make_special_mode (enum mode_class cl, const char *name, - const char *file, unsigned int line) -{ - new_mode (cl, name, file, line); -} - -#define INT_MODE(N, Y) FRACTIONAL_INT_MODE (N, -1U, Y) -#define FRACTIONAL_INT_MODE(N, B, Y) \ - make_int_mode (#N, B, Y, __FILE__, __LINE__) - -static void -make_int_mode (const char *name, - unsigned int precision, unsigned int bytesize, - const char *file, unsigned int line) -{ - struct mode_data *m = new_mode (MODE_INT, name, file, line); - m->bytesize = bytesize; - m->precision = precision; -} - -#define FLOAT_MODE(N, Y, F) FRACTIONAL_FLOAT_MODE (N, -1U, Y, F) -#define FRACTIONAL_FLOAT_MODE(N, B, Y, F) \ - make_float_mode (#N, B, Y, #F, __FILE__, __LINE__) - -static void -make_float_mode (const char *name, - unsigned int precision, unsigned int bytesize, - const char *format, - const char *file, unsigned int line) -{ - struct mode_data *m = new_mode (MODE_FLOAT, name, file, line); - m->bytesize = bytesize; - m->precision = precision; - m->format = format; -} - -#define DECIMAL_FLOAT_MODE(N, Y, F) \ - FRACTIONAL_DECIMAL_FLOAT_MODE (N, -1U, Y, F) -#define FRACTIONAL_DECIMAL_FLOAT_MODE(N, B, Y, F) \ - make_decimal_float_mode (#N, B, Y, #F, __FILE__, __LINE__) - -static void -make_decimal_float_mode (const char *name, - unsigned int precision, unsigned int bytesize, - const char *format, - const char *file, unsigned int line) -{ - struct mode_data *m = new_mode (MODE_DECIMAL_FLOAT, name, file, line); - m->bytesize = bytesize; - m->precision = precision; - m->format = format; -} - -#define RESET_FLOAT_FORMAT(N, F) \ - reset_float_format (#N, #F, __FILE__, __LINE__) -static void ATTRIBUTE_UNUSED -reset_float_format (const char *name, const char *format, - const char *file, unsigned int line) -{ - struct mode_data *m = find_mode (name); - if (!m) - { - error ("%s:%d: no mode \"%s\"", file, line, name); - return; - } - if (m->cl != MODE_FLOAT && m->cl != MODE_DECIMAL_FLOAT) - { - error ("%s:%d: mode \"%s\" is not a FLOAT class", file, line, name); - return; - } - m->format = format; -} - -/* Partial integer modes are specified by relation to a full integer mode. - For now, we do not attempt to narrow down their bit sizes. */ -#define PARTIAL_INT_MODE(M) \ - make_partial_integer_mode (#M, "P" #M, -1U, __FILE__, __LINE__) -static void ATTRIBUTE_UNUSED -make_partial_integer_mode (const char *base, const char *name, - unsigned int precision, - const char *file, unsigned int line) -{ - struct mode_data *m; - struct mode_data *component = find_mode (base); - if (!component) - { - error ("%s:%d: no mode \"%s\"", file, line, name); - return; - } - if (component->cl != MODE_INT) - { - error ("%s:%d: mode \"%s\" is not class INT", file, line, name); - return; - } - - m = new_mode (MODE_PARTIAL_INT, name, file, line); - m->precision = precision; - m->component = component; -} - -/* A single vector mode can be specified by naming its component - mode and the number of components. */ -#define VECTOR_MODE(C, M, N) \ - make_vector_mode (MODE_##C, #M, N, __FILE__, __LINE__); -static void ATTRIBUTE_UNUSED -make_vector_mode (enum mode_class bclass, - const char *base, - unsigned int ncomponents, - const char *file, unsigned int line) -{ - struct mode_data *v; - enum mode_class vclass = vector_class (bclass); - struct mode_data *component = find_mode (base); - char namebuf[8]; - - if (vclass == MODE_RANDOM) - return; - if (component == 0) - { - error ("%s:%d: no mode \"%s\"", file, line, base); - return; - } - if (component->cl != bclass - && (component->cl != MODE_PARTIAL_INT - || bclass != MODE_INT)) - { - error ("%s:%d: mode \"%s\" is not class %s", - file, line, base, mode_class_names[bclass] + 5); - return; - } - - if ((size_t)snprintf (namebuf, sizeof namebuf, "V%u%s", - ncomponents, base) >= sizeof namebuf) - { - error ("%s:%d: mode name \"%s\" is too long", - file, line, base); - return; - } - - v = new_mode (vclass, xstrdup (namebuf), file, line); - v->ncomponents = ncomponents; - v->component = component; -} - -/* Adjustability. */ -#define _ADD_ADJUST(A, M, X, C) \ - new_adjust (#M, &adj_##A, #A, #X, MODE_##C, __FILE__, __LINE__) - -#define ADJUST_BYTESIZE(M, X) _ADD_ADJUST(bytesize, M, X, RANDOM) -#define ADJUST_ALIGNMENT(M, X) _ADD_ADJUST(alignment, M, X, RANDOM) -#define ADJUST_FLOAT_FORMAT(M, X) _ADD_ADJUST(format, M, X, FLOAT) - -static void -create_modes (void) -{ -#include "machmode.def" -} - -/* Processing. */ - -/* Sort a list of modes into the order needed for the WIDER field: - major sort by precision, minor sort by component precision. - - For instance: - QI < HI < SI < DI < TI - V4QI < V2HI < V8QI < V4HI < V2SI. - - If the precision is not set, sort by the bytesize. A mode with - precision set gets sorted before a mode without precision set, if - they have the same bytesize; this is the right thing because - the precision must always be smaller than the bytesize * BITS_PER_UNIT. - We don't have to do anything special to get this done -- an unset - precision shows up as (unsigned int)-1, i.e. UINT_MAX. */ -static int -cmp_modes (const void *a, const void *b) -{ - struct mode_data *m = *(struct mode_data **)a; - struct mode_data *n = *(struct mode_data **)b; - - if (m->bytesize > n->bytesize) - return 1; - else if (m->bytesize < n->bytesize) - return -1; - - if (m->precision > n->precision) - return 1; - else if (m->precision < n->precision) - return -1; - - if (!m->component && !n->component) - { - if (m->counter < n->counter) - return -1; - else - return 1; - } - - if (m->component->bytesize > n->component->bytesize) - return 1; - else if (m->component->bytesize < n->component->bytesize) - return -1; - - if (m->component->precision > n->component->precision) - return 1; - else if (m->component->precision < n->component->precision) - return -1; - - if (m->counter < n->counter) - return -1; - else - return 1; -} - -static void -calc_wider_mode (void) -{ - int c; - struct mode_data *m; - struct mode_data **sortbuf; - unsigned int max_n_modes = 0; - unsigned int i, j; - - for (c = 0; c < MAX_MODE_CLASS; c++) - max_n_modes = MAX (max_n_modes, n_modes[c]); - - /* Allocate max_n_modes + 1 entries to leave room for the extra null - pointer assigned after the qsort call below. */ - sortbuf = (struct mode_data **) alloca ((max_n_modes + 1) * sizeof (struct mode_data *)); - - for (c = 0; c < MAX_MODE_CLASS; c++) - { - /* "wider" is not meaningful for MODE_RANDOM and MODE_CC. - However, we want these in textual order, and we have - precisely the reverse. */ - if (c == MODE_RANDOM || c == MODE_CC) - { - struct mode_data *prev, *next; - - for (prev = 0, m = modes[c]; m; m = next) - { - m->wider = void_mode; - m->wider_2x = void_mode; - - /* this is nreverse */ - next = m->next; - m->next = prev; - prev = m; - } - modes[c] = prev; - } - else - { - if (!modes[c]) - continue; - - for (i = 0, m = modes[c]; m; i++, m = m->next) - sortbuf[i] = m; - - qsort (sortbuf, i, sizeof (struct mode_data *), cmp_modes); - - sortbuf[i] = 0; - for (j = 0; j < i; j++) - sortbuf[j]->next = sortbuf[j]->wider = sortbuf[j + 1]; - - - modes[c] = sortbuf[0]; - } - } -} - -/* Output routines. */ - -#define tagged_printf(FMT, ARG, TAG) do { \ - int count_; \ - printf (" " FMT ",%n", ARG, &count_); \ - printf ("%*s/* %s */\n", 27 - count_, "", TAG); \ -} while (0) - -#define print_decl(TYPE, NAME, ASIZE) \ - puts ("\nconst " TYPE " " NAME "[" ASIZE "] =\n{"); - -#define print_maybe_const_decl(TYPE, NAME, ASIZE, CATEGORY) \ - printf ("\n" TYPE " " NAME "[" ASIZE "] = \n{\n", \ - adj_##CATEGORY ? "" : "const ") - -#define print_closer() puts ("};") - -static void -emit_insn_modes_h (void) -{ - int c; - struct mode_data *m, *first, *last; - - printf ("/* Generated automatically from machmode.def%s%s\n", - HAVE_EXTRA_MODES ? " and " : "", - EXTRA_MODES_FILE); - - puts ("\ - by genmodes. */\n\ -\n\ -#ifndef GCC_INSN_MODES_H\n\ -#define GCC_INSN_MODES_H\n\ -\n\ -enum machine_mode\n{"); - - for (c = 0; c < MAX_MODE_CLASS; c++) - for (m = modes[c]; m; m = m->next) - { - int count_; - printf (" %smode,%n", m->name, &count_); - printf ("%*s/* %s:%d */\n", 27 - count_, "", - trim_filename (m->file), m->line); - } - - puts (" MAX_MACHINE_MODE,\n"); - - for (c = 0; c < MAX_MODE_CLASS; c++) - { - first = modes[c]; - last = 0; - for (m = first; m; last = m, m = m->next) - ; - - /* Don't use BImode for MIN_MODE_INT, since otherwise the middle - end will try to use it for bitfields in structures and the - like, which we do not want. Only the target md file should - generate BImode widgets. */ - if (first && first->precision == 1) - first = first->next; - - if (first && last) - printf (" MIN_%s = %smode,\n MAX_%s = %smode,\n\n", - mode_class_names[c], first->name, - mode_class_names[c], last->name); - else - printf (" MIN_%s = %smode,\n MAX_%s = %smode,\n\n", - mode_class_names[c], void_mode->name, - mode_class_names[c], void_mode->name); - } - - puts ("\ - NUM_MACHINE_MODES = MAX_MACHINE_MODE\n\ -};\n"); - - /* I can't think of a better idea, can you? */ - printf ("#define CONST_MODE_SIZE%s\n", adj_bytesize ? "" : " const"); - printf ("#define CONST_MODE_BASE_ALIGN%s\n", adj_alignment ? "" : " const"); -#if 0 /* disabled for backward compatibility, temporary */ - printf ("#define CONST_REAL_FORMAT_FOR_MODE%s\n", adj_format ? "" :" const"); -#endif - puts ("\ -\n\ -#endif /* insn-modes.h */"); -} - -static void -emit_insn_modes_c_header (void) -{ - printf ("/* Generated automatically from machmode.def%s%s\n", - HAVE_EXTRA_MODES ? " and " : "", - EXTRA_MODES_FILE); - - puts ("\ - by genmodes. */\n\ -\n\ -#include \"config.h\"\n\ -#include \"system.h\"\n\ -#include \"coretypes.h\"\n\ -#include \"tm.h\"\n\ -#include \"machmode.h\"\n\ -#include \"real.h\""); -} - -static void -emit_min_insn_modes_c_header (void) -{ - printf ("/* Generated automatically from machmode.def%s%s\n", - HAVE_EXTRA_MODES ? " and " : "", - EXTRA_MODES_FILE); - - puts ("\ - by genmodes. */\n\ -\n\ -#include \"bconfig.h\"\n\ -#include \"system.h\"\n\ -#include \"machmode.h\""); -} - -static void -emit_mode_name (void) -{ - int c; - struct mode_data *m; - - print_decl ("char *const", "mode_name", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - printf (" \"%s\",\n", m->name); - - print_closer (); -} - -static void -emit_mode_class (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned char", "mode_class", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - tagged_printf ("%s", mode_class_names[m->cl], m->name); - - print_closer (); -} - -static void -emit_mode_precision (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned short", "mode_precision", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - if (m->precision != (unsigned int)-1) - tagged_printf ("%u", m->precision, m->name); - else - tagged_printf ("%u*BITS_PER_UNIT", m->bytesize, m->name); - - print_closer (); -} - -static void -emit_mode_size (void) -{ - int c; - struct mode_data *m; - - print_maybe_const_decl ("%sunsigned char", "mode_size", - "NUM_MACHINE_MODES", bytesize); - - for_all_modes (c, m) - tagged_printf ("%u", m->bytesize, m->name); - - print_closer (); -} - -static void -emit_mode_nunits (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned char", "mode_nunits", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - tagged_printf ("%u", m->ncomponents, m->name); - - print_closer (); -} - -static void -emit_mode_wider (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned char", "mode_wider", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - tagged_printf ("%smode", - m->wider ? m->wider->name : void_mode->name, - m->name); - - print_closer (); - print_decl ("unsigned char", "mode_2xwider", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - { - struct mode_data * m2; - - for (m2 = m; - m2 && m2 != void_mode; - m2 = m2->wider) - { - if (m2->bytesize < 2 * m->bytesize) - continue; - if (m->precision != (unsigned int) -1) - { - if (m2->precision != 2 * m->precision) - continue; - } - else - { - if (m2->precision != (unsigned int) -1) - continue; - } - - break; - } - if (m2 == void_mode) - m2 = 0; - tagged_printf ("%smode", - m2 ? m2->name : void_mode->name, - m->name); - } - - print_closer (); -} - -static void -emit_mode_mask (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned HOST_WIDE_INT", "mode_mask_array", - "NUM_MACHINE_MODES"); - puts ("\ -#define MODE_MASK(m) \\\n\ - ((m) >= HOST_BITS_PER_WIDE_INT) \\\n\ - ? ~(unsigned HOST_WIDE_INT) 0 \\\n\ - : ((unsigned HOST_WIDE_INT) 1 << (m)) - 1\n"); - - for_all_modes (c, m) - if (m->precision != (unsigned int)-1) - tagged_printf ("MODE_MASK (%u)", m->precision, m->name); - else - tagged_printf ("MODE_MASK (%u*BITS_PER_UNIT)", m->bytesize, m->name); - - puts ("#undef MODE_MASK"); - print_closer (); -} - -static void -emit_mode_inner (void) -{ - int c; - struct mode_data *m; - - print_decl ("unsigned char", "mode_inner", "NUM_MACHINE_MODES"); - - for_all_modes (c, m) - tagged_printf ("%smode", - m->component ? m->component->name : void_mode->name, - m->name); - - print_closer (); -} - -static void -emit_mode_base_align (void) -{ - int c; - struct mode_data *m; - - print_maybe_const_decl ("%sunsigned char", - "mode_base_align", "NUM_MACHINE_MODES", - alignment); - - for_all_modes (c, m) - tagged_printf ("%u", m->alignment, m->name); - - print_closer (); -} - -static void -emit_class_narrowest_mode (void) -{ - int c; - - print_decl ("unsigned char", "class_narrowest_mode", "MAX_MODE_CLASS"); - - for (c = 0; c < MAX_MODE_CLASS; c++) - /* Bleah, all this to get the comment right for MIN_MODE_INT. */ - tagged_printf ("MIN_%s", mode_class_names[c], - modes[c] - ? (modes[c]->precision != 1 - ? modes[c]->name - : (modes[c]->next - ? modes[c]->next->name - : void_mode->name)) - : void_mode->name); - - print_closer (); -} - -static void -emit_real_format_for_mode (void) -{ - struct mode_data *m; - - /* The entities pointed to by this table are constant, whether - or not the table itself is constant. - - For backward compatibility this table is always writable - (several targets modify it in OVERRIDE_OPTIONS). FIXME: - convert all said targets to use ADJUST_FORMAT instead. */ -#if 0 - print_maybe_const_decl ("const struct real_format *%s", - "real_format_for_mode", - "MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1", - format); -#else - print_decl ("struct real_format *\n", "real_format_for_mode", - "MAX_MODE_FLOAT - MIN_MODE_FLOAT + 1 " - "+ MAX_MODE_DECIMAL_FLOAT - MIN_MODE_DECIMAL_FLOAT + 1"); -#endif - - /* The beginning of the table is entries for float modes. */ - for (m = modes[MODE_FLOAT]; m; m = m->next) - if (!strcmp (m->format, "0")) - tagged_printf ("%s", m->format, m->name); - else - tagged_printf ("&%s", m->format, m->name); - - /* The end of the table is entries for decimal float modes. */ - for (m = modes[MODE_DECIMAL_FLOAT]; m; m = m->next) - if (!strcmp (m->format, "0")) - tagged_printf ("%s", m->format, m->name); - else - tagged_printf ("&%s", m->format, m->name); - - print_closer (); -} - -static void -emit_mode_adjustments (void) -{ - struct mode_adjust *a; - struct mode_data *m; - - puts ("\ -\nvoid\ -\ninit_adjust_machine_modes (void)\ -\n{\ -\n size_t s ATTRIBUTE_UNUSED;"); - - /* Size adjustments must be propagated to all containing modes. - A size adjustment forces us to recalculate the alignment too. */ - for (a = adj_bytesize; a; a = a->next) - { - printf ("\n /* %s:%d */\n s = %s;\n", - a->file, a->line, a->adjustment); - printf (" mode_size[%smode] = s;\n", a->mode->name); - printf (" mode_base_align[%smode] = s & (~s + 1);\n", - a->mode->name); - - for (m = a->mode->contained; m; m = m->next_cont) - { - switch (m->cl) - { - case MODE_COMPLEX_INT: - case MODE_COMPLEX_FLOAT: - printf (" mode_size[%smode] = 2*s;\n", m->name); - printf (" mode_base_align[%smode] = s & (~s + 1);\n", - m->name); - break; - - case MODE_VECTOR_INT: - case MODE_VECTOR_FLOAT: - printf (" mode_size[%smode] = %d*s;\n", - m->name, m->ncomponents); - printf (" mode_base_align[%smode] = (%d*s) & (~(%d*s)+1);\n", - m->name, m->ncomponents, m->ncomponents); - break; - - default: - internal_error ( - "mode %s is neither vector nor complex but contains %s", - m->name, a->mode->name); - /* NOTREACHED */ - } - } - } - - /* Alignment adjustments propagate too. - ??? This may not be the right thing for vector modes. */ - for (a = adj_alignment; a; a = a->next) - { - printf ("\n /* %s:%d */\n s = %s;\n", - a->file, a->line, a->adjustment); - printf (" mode_base_align[%smode] = s;\n", a->mode->name); - - for (m = a->mode->contained; m; m = m->next_cont) - { - switch (m->cl) - { - case MODE_COMPLEX_INT: - case MODE_COMPLEX_FLOAT: - printf (" mode_base_align[%smode] = s;\n", m->name); - break; - - case MODE_VECTOR_INT: - case MODE_VECTOR_FLOAT: - printf (" mode_base_align[%smode] = %d*s;\n", - m->name, m->ncomponents); - break; - - default: - internal_error ( - "mode %s is neither vector nor complex but contains %s", - m->name, a->mode->name); - /* NOTREACHED */ - } - } - } - - /* Real mode formats don't have to propagate anywhere. */ - for (a = adj_format; a; a = a->next) - printf ("\n /* %s:%d */\n REAL_MODE_FORMAT (%smode) = %s;\n", - a->file, a->line, a->mode->name, a->adjustment); - - puts ("}"); -} - -static void -emit_insn_modes_c (void) -{ - emit_insn_modes_c_header (); - emit_mode_name (); - emit_mode_class (); - emit_mode_precision (); - emit_mode_size (); - emit_mode_nunits (); - emit_mode_wider (); - emit_mode_mask (); - emit_mode_inner (); - emit_mode_base_align (); - emit_class_narrowest_mode (); - emit_real_format_for_mode (); - emit_mode_adjustments (); -} - -static void -emit_min_insn_modes_c (void) -{ - emit_min_insn_modes_c_header (); - emit_mode_name (); - emit_mode_class (); - emit_mode_wider (); - emit_class_narrowest_mode (); -} - -/* Master control. */ -int -main(int argc, char **argv) -{ - bool gen_header = false, gen_min = false; - progname = argv[0]; - - if (argc == 1) - ; - else if (argc == 2 && !strcmp (argv[1], "-h")) - gen_header = true; - else if (argc == 2 && !strcmp (argv[1], "-m")) - gen_min = true; - else - { - error ("usage: %s [-h|-m] > file", progname); - return FATAL_EXIT_CODE; - } - - modes_by_name = htab_create_alloc (64, hash_mode, eq_mode, 0, xcalloc, free); - - create_modes (); - complete_all_modes (); - - if (have_error) - return FATAL_EXIT_CODE; - - calc_wider_mode (); - - if (gen_header) - emit_insn_modes_h (); - else if (gen_min) - emit_min_insn_modes_c (); - else - emit_insn_modes_c (); - - if (fflush (stdout) || fclose (stdout)) - return FATAL_EXIT_CODE; - return SUCCESS_EXIT_CODE; -} |