/* Generate code to allocate RTL structures.
- Copyright (C) 1997, 1998, 1999, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1997, 1998, 1999, 2000, 2002, 2003
+ Free Software Foundation, Inc.
This file is part of GCC.
02111-1307, USA. */
-#include "hconfig.h"
+#include "bconfig.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#define NO_GENRTL_H
#include "rtl.h"
#include "real.h"
-/* Calculate the format for CONST_DOUBLE. This depends on the relative
- widths of HOST_WIDE_INT and REAL_VALUE_TYPE.
-
- We need to go out to e0wwwww, since REAL_ARITHMETIC assumes 16-bits
- per element in REAL_VALUE_TYPE.
-
- This is duplicated in rtl.c.
-
- A number of places assume that there are always at least two 'w'
- slots in a CONST_DOUBLE, so we provide them even if one would suffice. */
-
-#ifdef REAL_ARITHMETIC
-# if MAX_LONG_DOUBLE_TYPE_SIZE == 96
-# define REAL_WIDTH \
- (11*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-# else
-# if MAX_LONG_DOUBLE_TYPE_SIZE == 128
-# define REAL_WIDTH \
- (19*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-# else
-# if HOST_FLOAT_FORMAT != TARGET_FLOAT_FORMAT
-# define REAL_WIDTH \
- (7*8 + HOST_BITS_PER_WIDE_INT)/HOST_BITS_PER_WIDE_INT
-# endif
-# endif
-# endif
-#endif /* REAL_ARITHMETIC */
-
-#ifndef REAL_WIDTH
-# if HOST_BITS_PER_WIDE_INT*2 >= MAX_LONG_DOUBLE_TYPE_SIZE
-# define REAL_WIDTH 2
-# else
-# if HOST_BITS_PER_WIDE_INT*3 >= MAX_LONG_DOUBLE_TYPE_SIZE
-# define REAL_WIDTH 3
-# else
-# if HOST_BITS_PER_WIDE_INT*4 >= MAX_LONG_DOUBLE_TYPE_SIZE
-# define REAL_WIDTH 4
-# endif
-# endif
-# endif
-#endif /* REAL_WIDTH */
-
-#if REAL_WIDTH == 1
-# define CONST_DOUBLE_FORMAT "0ww"
-#else
-# if REAL_WIDTH == 2
-# define CONST_DOUBLE_FORMAT "0ww"
-# else
-# if REAL_WIDTH == 3
-# define CONST_DOUBLE_FORMAT "0www"
-# else
-# if REAL_WIDTH == 4
-# define CONST_DOUBLE_FORMAT "0wwww"
-# else
-# if REAL_WIDTH == 5
-# define CONST_DOUBLE_FORMAT "0wwwww"
-# else
-# define CONST_DOUBLE_FORMAT /* nothing - will cause syntax error */
-# endif
-# endif
-# endif
-# endif
-#endif
-
-
-struct rtx_definition
+struct rtx_definition
{
const char *const enumname, *const name, *const format;
};
-#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { STRINGX(ENUM), NAME, FORMAT },
+#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { #ENUM, NAME, FORMAT },
-const struct rtx_definition defs[] =
-{
+static const struct rtx_definition defs[] =
+{
#include "rtl.def" /* rtl expressions are documented here */
};
-const char *formats[NUM_RTX_CODE];
-
-static const char *type_from_format PARAMS ((int));
-static const char *accessor_from_format PARAMS ((int));
-static int special_format PARAMS ((const char *));
-static int special_rtx PARAMS ((int));
-static void find_formats PARAMS ((void));
-static void gendecl PARAMS ((const char *));
-static void genmacro PARAMS ((int));
-static void gendef PARAMS ((const char *));
-static void genlegend PARAMS ((void));
-static void genheader PARAMS ((void));
-static void gencode PARAMS ((void));
+static const char *formats[NUM_RTX_CODE];
+
+static const char *type_from_format (int);
+static const char *accessor_from_format (int);
+static int special_format (const char *);
+static int special_rtx (int);
+static int excluded_rtx (int);
+static void find_formats (void);
+static void gendecl (const char *);
+static void genmacro (int);
+static void gendef (const char *);
+static void genlegend (void);
+static void genheader (void);
+static void gencode (void);
\f
/* Decode a format letter into a C type string. */
static const char *
-type_from_format (c)
- int c;
+type_from_format (int c)
{
switch (c)
{
return "struct bitmap_head_def *"; /* bitmap - typedef not available */
case 't':
return "union tree_node *"; /* tree - typedef not available */
+ case 'B':
+ return "struct basic_block_def *"; /* basic block - typedef not available */
default:
abort ();
}
/* Decode a format letter into the proper accessor function. */
static const char *
-accessor_from_format (c)
- int c;
+accessor_from_format (int c)
{
switch (c)
{
case 't':
return "XTREE";
+ case 'B':
+ return "XBBDEF";
+
default:
abort ();
}
the list of formats we write routines to create. */
static int
-special_format (fmt)
- const char *fmt;
+special_format (const char *fmt)
{
return (strchr (fmt, '*') != 0
|| strchr (fmt, 'V') != 0
|| strchr (fmt, 'n') != 0);
}
-/* Return nonzero if the RTL code given by index IDX is one that we should not
- generate a gen_RTX_FOO function foo (because that function is present
- elsewhere in the compiler). */
+/* Return nonzero if the RTL code given by index IDX is one that we should
+ generate a gen_rtx_raw_FOO macro for, not gen_rtx_FOO (because gen_rtx_FOO
+ is a wrapper in emit-rtl.c). */
static int
-special_rtx (idx)
- int idx;
+special_rtx (int idx)
{
return (strcmp (defs[idx].enumname, "CONST_INT") == 0
- || strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0
|| strcmp (defs[idx].enumname, "REG") == 0
|| strcmp (defs[idx].enumname, "SUBREG") == 0
- || strcmp (defs[idx].enumname, "MEM") == 0);
+ || strcmp (defs[idx].enumname, "MEM") == 0
+ || strcmp (defs[idx].enumname, "CONST_VECTOR") == 0);
+}
+
+/* Return nonzero if the RTL code given by index IDX is one that we should
+ generate no macro for at all (because gen_rtx_FOO is never used or
+ cannot have the obvious interface). */
+
+static int
+excluded_rtx (int idx)
+{
+ return (strcmp (defs[idx].enumname, "CONST_DOUBLE") == 0);
}
/* Place a list of all format specifiers we use into the array FORMAT. */
static void
-find_formats ()
+find_formats (void)
{
int i;
/* Write the declarations for the routine to allocate RTL with FORMAT. */
static void
-gendecl (format)
- const char *format;
+gendecl (const char *format)
{
const char *p;
int i, pos;
-
- printf ("extern rtx gen_rtx_fmt_%s\tPARAMS ((RTX_CODE, ", format);
+
+ printf ("extern rtx gen_rtx_fmt_%s\t (RTX_CODE, ", format);
printf ("enum machine_mode mode");
/* Write each parameter that is needed and start a new line when the line
pos += ourlen;
}
- printf ("));\n");
+ printf (");\n");
}
/* Generate macros to generate RTL of code IDX using the functions we
write. */
-static void
-genmacro (idx)
- int idx;
+static void
+genmacro (int idx)
{
const char *p;
int i;
/* We write a macro that defines gen_rtx_RTLCODE to be an equivalent to
gen_rtx_fmt_FORMAT where FORMAT is the RTX_FORMAT of RTLCODE. */
+ if (excluded_rtx (idx))
+ /* Don't define a macro for this code. */
+ return;
+
printf ("#define gen_rtx_%s%s(MODE",
special_rtx (idx) ? "raw_" : "", defs[idx].enumname);
format is FORMAT. */
static void
-gendef (format)
- const char *format;
+gendef (const char *format)
{
const char *p;
int i, j;
-
+
/* Start by writing the definition of the function name and the types
of the arguments. */
- printf ("rtx\ngen_rtx_fmt_%s (code, mode", format);
+ printf ("rtx\ngen_rtx_fmt_%s (RTX_CODE code, enum machine_mode mode", format);
for (p = format, i = 0; *p != 0; p++)
if (*p != '0')
- printf (", arg%d", i++);
+ printf (",\n\t%sarg%d", type_from_format (*p), i++);
- puts (")\n RTX_CODE code;\n enum machine_mode mode;");
- for (p = format, i = 0; *p != 0; p++)
- if (*p != '0')
- printf (" %sarg%d;\n", type_from_format (*p), i++);
+ puts (")");
/* Now write out the body of the function itself, which allocates
the memory and initializes it. */
/* Generate the documentation header for files we write. */
static void
-genlegend ()
+genlegend (void)
{
puts ("/* Generated automatically by gengenrtl from rtl.def. */\n");
}
/* Generate the text of the header file we make, genrtl.h. */
static void
-genheader ()
+genheader (void)
{
int i;
const char **fmt;
/* Generate the text of the code file we write, genrtl.c. */
static void
-gencode ()
+gencode (void)
{
const char **fmt;
puts ("#include \"config.h\"");
puts ("#include \"system.h\"");
+ puts ("#include \"coretypes.h\"");
+ puts ("#include \"tm.h\"");
puts ("#include \"obstack.h\"");
puts ("#include \"rtl.h\"");
puts ("#include \"ggc.h\"\n");
- puts ("extern struct obstack *rtl_obstack;\n");
- puts ("#define obstack_alloc_rtx(n) \\");
- puts (" ((rtx) obstack_alloc (rtl_obstack, \\");
- puts (" sizeof (struct rtx_def) \\");
- puts (" + ((n) - 1) * sizeof (rtunion)))\n");
for (fmt = formats; *fmt != 0; fmt++)
gendef (*fmt);
}
-#if defined(USE_C_ALLOCA)
-PTR
-xmalloc (nbytes)
- size_t nbytes;
-{
- PTR tmp = (PTR) really_call_malloc (nbytes);
-
- if (!tmp)
- {
- fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n",
- nbytes);
- exit (FATAL_EXIT_CODE);
- }
-
- return tmp;
-}
-#endif /* USE_C_ALLOCA */
-
/* This is the main program. We accept only one argument, "-h", which
says we are writing the genrtl.h file. Otherwise we are writing the
genrtl.c file. */
-extern int main PARAMS ((int, char **));
int
-main (argc, argv)
- int argc;
- char **argv;
+main (int argc, char **argv)
{
find_formats ();
genlegend ();
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