#include "hconfig.h"
#include "system.h"
#undef abort
#define NO_GENRTL_H
#include "rtl.h"
struct rtx_definition
{
const char *enumname, *name, *format;
};
#define DEF_RTL_EXPR(ENUM, NAME, FORMAT, CLASS) { STRINGIFY(ENUM), NAME, FORMAT },
struct rtx_definition defs[] =
{
#include "rtl.def"
};
const char *formats[NUM_RTX_CODE];
static const char *type_from_format PROTO((int));
static const char *accessor_from_format PROTO((int));
static int special_format PROTO((const char *));
static int special_rtx PROTO((int));
static void find_formats PROTO((void));
static void gendecl PROTO((FILE *, const char *));
static void genmacro PROTO((FILE *, int));
static void gendef PROTO((FILE *, const char *));
static void genlegend PROTO((FILE *));
static void genheader PROTO((FILE *));
static void gencode PROTO((FILE *));
static const char *
type_from_format (c)
int c;
{
switch (c)
{
case 'i':
return "int";
case 'w':
return "HOST_WIDE_INT";
case 's':
return "char *";
case 'e':
case 'u':
return "rtx";
case 'E':
return "rtvec";
case 'b':
return "void *";
case 't':
return "void *";
default:
abort ();
}
}
static const char *
accessor_from_format (c)
int c;
{
switch (c)
{
case 'i':
return "XINT";
case 'w':
return "XWINT";
case 's':
return "XSTR";
case 'e':
case 'u':
return "XEXP";
case 'E':
return "XVEC";
case 'b':
return "XBITMAP";
case 't':
return "XTREE";
default:
abort ();
}
}
static int
special_format (fmt)
const char *fmt;
{
return (strchr (fmt, '*') != 0
|| strchr (fmt, 'V') != 0
|| strchr (fmt, 'S') != 0
|| strchr (fmt, 'n') != 0);
}
static int
special_rtx (idx)
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, "MEM") == 0);
}
static void
find_formats ()
{
int i;
for (i = 0; i < NUM_RTX_CODE; ++i)
{
const char **f;
if (special_format (defs[i].format))
continue;
for (f = formats; *f ; ++f)
if (! strcmp (*f, defs[i].format))
break;
if (!*f)
*f = defs[i].format;
}
}
static void
gendecl (f, format)
FILE *f;
const char *format;
{
const char *p;
int i;
fprintf (f, "extern rtx gen_rtx_fmt_%s PROTO((RTX_CODE, enum machine_mode mode",
format);
for (p = format, i = 0; *p ; ++p)
if (*p != '0')
fprintf (f, ", %s arg%d", type_from_format (*p), i++);
fprintf (f, "));\n");
}
static void
genmacro (f, idx)
FILE *f;
int idx;
{
const char *p;
int i;
fprintf (f, "#define gen_rtx_%s%s(mode",
(special_rtx (idx) ? "raw_" : ""), defs[idx].enumname);
for (p = defs[idx].format, i = 0; *p ; ++p)
if (*p != '0')
fprintf (f, ", arg%d", i++);
fprintf (f, ") ");
fprintf (f, "gen_rtx_fmt_%s(%s,(mode)", defs[idx].format, defs[idx].enumname);
for (p = defs[idx].format, i = 0; *p ; ++p)
if (*p != '0')
fprintf (f, ",(arg%d)", i++);
fprintf (f, ")\n");
}
static void
gendef (f, format)
FILE *f;
const char *format;
{
const char *p;
int i, j;
fprintf (f, "rtx\ngen_rtx_fmt_%s (code, mode", format);
for (p = format, i = 0; *p ; ++p)
if (*p != '0')
fprintf (f, ", arg%d", i++);
fprintf (f, ")\n RTX_CODE code;\n enum machine_mode mode;\n");
for (p = format, i = 0; *p ; ++p)
if (*p != '0')
fprintf (f, " %s arg%d;\n", type_from_format (*p), i++);
fprintf (f, "{\n");
fprintf (f, " rtx rt = obstack_alloc_rtx (sizeof (struct rtx_def) + %d * sizeof (rtunion));\n",
(int) strlen (format) - 1);
fprintf (f, " PUT_CODE (rt, code);\n");
fprintf (f, " PUT_MODE (rt, mode);\n");
for (p = format, i = j = 0; *p ; ++p, ++i)
if (*p != '0')
{
fprintf (f, " %s (rt, %d) = arg%d;\n",
accessor_from_format (*p), i, j++);
}
fprintf (f, "\n return rt;\n}\n\n");
}
static void
genlegend (f)
FILE *f;
{
fputs ("/* Generated automaticaly by the program `gengenrtl'\n", f);
fputs (" from the RTL description file `rtl.def' */\n\n", f);
}
static void
genheader (f)
FILE *f;
{
int i;
const char **fmt;
for (fmt = formats; *fmt; ++fmt)
gendecl (f, *fmt);
fprintf (f, "\n");
for (i = 0; i < NUM_RTX_CODE; i++)
{
if (special_format (defs[i].format))
continue;
genmacro (f, i);
}
}
static void
gencode (f)
FILE *f;
{
const char **fmt;
fputs ("#include \"config.h\"\n", f);
fputs ("#include \"system.h\"\n", f);
fputs ("#include \"obstack.h\"\n", f);
fputs ("#include \"rtl.h\"\n\n", f);
fputs ("extern struct obstack *rtl_obstack;\n\n", f);
fputs ("static rtx obstack_alloc_rtx PROTO((int length));\n", f);
fputs ("static rtx obstack_alloc_rtx (length)\n", f);
fputs (" register int length;\n{\n", f);
fputs (" rtx rt = (rtx) obstack_alloc (rtl_obstack, length);\n\n", f);
fputs (" memset(rt, 0, sizeof(struct rtx_def) - sizeof(rtunion));\n\n", f);
fputs (" return rt;\n}\n\n", f);
for (fmt = formats; *fmt; ++fmt)
gendef (f, *fmt);
}
#if defined(USE_C_ALLOCA)
PTR
xmalloc (nbytes)
size_t nbytes;
{
register PTR tmp = (PTR) malloc (nbytes);
if (!tmp)
{
fprintf (stderr, "can't allocate %d bytes (out of virtual memory)\n",
nbytes);
exit (FATAL_EXIT_CODE);
}
return tmp;
}
#endif
int
main(argc, argv)
int argc;
char **argv;
{
FILE *f;
if (argc != 3)
exit (1);
find_formats ();
f = fopen (argv[1], "w");
if (f == NULL)
{
perror (argv[1]);
exit (1);
}
genlegend (f);
genheader (f);
fclose (f);
f = fopen (argv[2], "w");
if (f == NULL)
{
perror (argv[2]);
exit (1);
}
genlegend (f);
gencode (f);
fclose (f);
exit (0);
}