| /* Generate the machine mode enumeration and associated tables. |
| Copyright (C) 2003 |
| 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, 59 Temple Place - Suite 330, Boston, MA |
| 02111-1307, 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 class; /* 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 - MODE_FLOAT only */ |
| |
| struct mode_data *component; /* mode of components */ |
| struct mode_data *wider; /* next 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 */ |
| }; |
| |
| 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, |
| -1, -1, -1, -1, |
| 0, 0, 0, 0, 0, |
| "<unknown>", 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 class) |
| { |
| switch (class) |
| { |
| 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[class]); |
| return MODE_RANDOM; |
| } |
| } |
| |
| static enum mode_class |
| vector_class (enum mode_class class) |
| { |
| switch (class) |
| { |
| 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[class]); |
| return MODE_RANDOM; |
| } |
| } |
| |
| /* Utility routines. */ |
| static inline struct mode_data * |
| find_mode (const char *name) |
| { |
| struct mode_data key; |
| |
| key.name = name; |
| return htab_find (modes_by_name, &key); |
| } |
| |
| static struct mode_data * |
| new_mode (enum mode_class class, const char *name, |
| const char *file, unsigned int line) |
| { |
| struct mode_data *m; |
| |
| 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 = xmalloc (sizeof (struct mode_data)); |
| memcpy (m, &blank_mode, sizeof (struct mode_data)); |
| m->class = class; |
| m->name = name; |
| if (file) |
| m->file = trim_filename (file); |
| m->line = line; |
| |
| m->next = modes[class]; |
| modes[class] = m; |
| n_modes[class]++; |
| |
| *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->class != 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 = xmalloc (sizeof (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->class == MAX_MODE_CLASS) |
| { |
| error ("%s:%d: %smode has no mode class", m->file, m->line, m->name); |
| return; |
| } |
| |
| switch (m->class) |
| { |
| 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: |
| /* 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->class == MODE_FLOAT ? 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: |
| abort (); |
| } |
| |
| /* 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->class == MODE_COMPLEX_INT || m->class == 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; |
| enum mode_class c; |
| |
| for_all_modes (c, 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 class, |
| const char *file, unsigned int line) |
| { |
| struct mode_data *m; |
| struct mode_data *c; |
| char buf[8]; |
| enum mode_class cclass = complex_class (class); |
| |
| if (cclass == MODE_RANDOM) |
| return; |
| |
| for (m = modes[class]; 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 (class == MODE_FLOAT) |
| { |
| char *p; |
| strncpy (buf, m->name, sizeof buf); |
| p = strchr (buf, 'F'); |
| if (p == 0) |
| { |
| error ("%s:%d: float mode \"%s\" has no 'F'", |
| m->file, m->line, m->name); |
| continue; |
| } |
| |
| *p = 'C'; |
| } |
| 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 CLASS, 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 |
| make_vector_modes (enum mode_class class, 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 (class); |
| |
| if (vclass == MODE_RANDOM) |
| return; |
| |
| for (m = modes[class]; 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 (class == MODE_FLOAT && m->bytesize == 1) |
| continue; |
| if (class == 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 class, const char *name, |
| const char *file, unsigned int line) |
| { |
| new_mode (class, name, file, line); |
| } |
| |
| #define INT_MODE(N, Y) FRACTIONAL_INT_MODE (N, -1, 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, -1, 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 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->class != MODE_FLOAT) |
| { |
| error ("%s:%d: mode \"%s\" is not class FLOAT", 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, -1, __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->class != 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->class != bclass) |
| { |
| 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", |
| base, file, line); |
| 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) |
| return 0; |
| |
| 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; |
| |
| return 0; |
| } |
| |
| static void |
| calc_wider_mode (void) |
| { |
| enum mode_class 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 = 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; |
| |
| /* 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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->class], m->name); |
| |
| print_closer (); |
| } |
| |
| static void |
| emit_mode_precision (void) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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 (); |
| } |
| |
| static void |
| emit_mode_mask (void) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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) |
| { |
| enum mode_class 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"); |
| #endif |
| |
| 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); |
| |
| 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->class) |
| { |
| 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->class) |
| { |
| 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; |
| } |