/* Generate from machine description:
- some flags HAVE_... saying which simple standard instructions are
available for this machine.
- Copyright (C) 1987, 91, 95, 98, 99, 2000 Free Software Foundation, Inc.
+ Copyright (C) 1987, 1991, 1995, 1998,
+ 1999, 2000 Free Software Foundation, Inc.
This file is part of GNU CC.
#include "rtl.h"
#include "obstack.h"
#include "errors.h"
+#include "gensupport.h"
-static struct obstack obstack;
-struct obstack *rtl_obstack = &obstack;
#define obstack_chunk_alloc xmalloc
#define obstack_chunk_free free
-/* Obstacks to remember normal, and call insns. */
-static struct obstack call_obstack, normal_obstack;
+/* Obstack to remember insns with. */
+static struct obstack obstack;
/* Max size of names encountered. */
static int max_id_len;
static void max_operand_1 PARAMS ((rtx));
static int num_operands PARAMS ((rtx));
static void gen_proto PARAMS ((rtx));
-static void gen_nonproto PARAMS ((rtx));
+static void gen_macro PARAMS ((const char *, int, int));
static void gen_insn PARAMS ((rtx));
/* Count the number of match_operand's found. */
return max_opno + 1;
}
+/* Print out a wrapper macro for a function which corrects the number
+ of arguments it takes. Any missing arguments are assumed to be at
+ the end. */
+static void
+gen_macro (name, real, expect)
+ const char *name;
+ int real, expect;
+{
+ int i;
+
+ if (real > expect)
+ abort ();
+ if (real == 0)
+ abort ();
+
+ /* #define GEN_CALL(A, B, C, D) gen_call((A), (B)) */
+ fputs ("#define GEN_", stdout);
+ for (i = 0; name[i]; i++)
+ putchar (TOUPPER (name[i]));
+
+ putchar('(');
+ for (i = 0; i < expect - 1; i++)
+ printf ("%c, ", i + 'A');
+ printf ("%c) gen_%s (", i + 'A', name);
+
+ for (i = 0; i < real - 1; i++)
+ printf ("(%c), ", i + 'A');
+ printf ("(%c))\n", i + 'A');
+}
+
/* Print out prototype information for a function. */
static void
rtx insn;
{
int num = num_operands (insn);
- printf ("extern rtx gen_%-*s PARAMS ((", max_id_len, XSTR (insn, 0));
+ const char *name = XSTR (insn, 0);
+
+ /* Many md files don't refer to the last two operands passed to the
+ call patterns. This means their generator functions will be two
+ arguments too short. Instead of changing every md file to touch
+ those operands, we wrap the prototypes in macros that take the
+ correct number of arguments. */
+ if (name[0] == 'c' || name[0] == 's')
+ {
+ if (!strcmp (name, "call")
+ || !strcmp (name, "call_pop")
+ || !strcmp (name, "sibcall")
+ || !strcmp (name, "sibcall_pop"))
+ gen_macro (name, num, 4);
+ else if (!strcmp (name, "call_value")
+ || !strcmp (name, "call_value_pop")
+ || !strcmp (name, "sibcall_value")
+ || !strcmp (name, "sibcall_value_pop"))
+ gen_macro (name, num, 5);
+ }
+
+ printf ("extern struct rtx_def *gen_%-*s PARAMS ((", max_id_len, name);
if (num == 0)
printf ("void");
else
{
while (num-- > 1)
- printf ("rtx, ");
+ printf ("struct rtx_def *, ");
- printf ("rtx");
+ printf ("struct rtx_def *");
}
printf ("));\n");
-}
-/* Print out a function declaration without a prototype. */
-
-static void
-gen_nonproto (insn)
- rtx insn;
-{
- printf ("extern rtx gen_%s ();\n", XSTR (insn, 0));
}
static void
gen_insn (insn)
rtx insn;
{
- char *name = XSTR (insn, 0);
- char *p;
- struct obstack *obstack_ptr;
+ const char *name = XSTR (insn, 0);
+ const char *p;
int len;
/* Don't mention instructions whose names are the null string
printf (")\n");
}
- /* Save the current insn, so that we can later put out appropriate
- prototypes. At present, most md files have the wrong number of
- arguments for the call insns (call, call_value, call_pop,
- call_value_pop) ignoring the extra arguments that are passed for
- some machines, so by default, turn off the prototype. */
-
- obstack_ptr = (name[0] == 'c'
- && (!strcmp (name, "call")
- || !strcmp (name, "call_value")
- || !strcmp (name, "call_pop")
- || !strcmp (name, "call_value_pop")))
- ? &call_obstack : &normal_obstack;
-
- obstack_grow (obstack_ptr, &insn, sizeof (rtx));
-}
-\f
-PTR
-xmalloc (size)
- size_t size;
-{
- register PTR val = (PTR) malloc (size);
-
- if (val == 0)
- fatal ("virtual memory exhausted");
-
- return val;
-}
-
-PTR
-xrealloc (old, size)
- PTR old;
- size_t size;
-{
- register PTR ptr;
- if (old)
- ptr = (PTR) realloc (old, size);
- else
- ptr = (PTR) malloc (size);
- if (!ptr)
- fatal ("virtual memory exhausted");
- return ptr;
+ obstack_grow (&obstack, &insn, sizeof (rtx));
}
extern int main PARAMS ((int, char **));
{
rtx desc;
rtx dummy;
- rtx *call_insns;
- rtx *normal_insns;
+ rtx *insns;
rtx *insn_ptr;
- FILE *infile;
- register int c;
progname = "genflags";
- obstack_init (rtl_obstack);
- obstack_init (&call_obstack);
- obstack_init (&normal_obstack);
+ obstack_init (&obstack);
if (argc <= 1)
fatal ("No input file name.");
- infile = fopen (argv[1], "r");
- if (infile == 0)
- {
- perror (argv[1]);
- return (FATAL_EXIT_CODE);
- }
- read_rtx_filename = argv[1];
-
- printf ("/* Generated automatically by the program `genflags'\n\
-from the machine description file `md'. */\n\n");
+ if (init_md_reader (argv[1]) != SUCCESS_EXIT_CODE)
+ return (FATAL_EXIT_CODE);
+
+ puts ("/* Generated automatically by the program `genflags'");
+ puts (" from the machine description file `md'. */\n");
+ puts ("#ifndef GCC_INSN_FLAGS_H");
+ puts ("#define GCC_INSN_FLAGS_H\n");
/* Read the machine description. */
while (1)
{
- c = read_skip_spaces (infile);
- if (c == EOF)
- break;
- ungetc (c, infile);
+ int line_no, insn_code_number = 0;
- desc = read_rtx (infile);
+ desc = read_md_rtx (&line_no, &insn_code_number);
+ if (desc == NULL)
+ break;
if (GET_CODE (desc) == DEFINE_INSN || GET_CODE (desc) == DEFINE_EXPAND)
gen_insn (desc);
}
/* Print out the prototypes now. */
dummy = (rtx) 0;
- obstack_grow (&call_obstack, &dummy, sizeof (rtx));
- call_insns = (rtx *) obstack_finish (&call_obstack);
-
- obstack_grow (&normal_obstack, &dummy, sizeof (rtx));
- normal_insns = (rtx *) obstack_finish (&normal_obstack);
-
- for (insn_ptr = normal_insns; *insn_ptr; insn_ptr++)
- gen_proto (*insn_ptr);
+ obstack_grow (&obstack, &dummy, sizeof (rtx));
+ insns = (rtx *) obstack_finish (&obstack);
- printf ("\n#ifdef MD_CALL_PROTOTYPES\n");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
+ printf ("struct rtx_def;\n");
+ for (insn_ptr = insns; *insn_ptr; insn_ptr++)
gen_proto (*insn_ptr);
- printf ("\n#else /* !MD_CALL_PROTOTYPES */\n");
- for (insn_ptr = call_insns; *insn_ptr; insn_ptr++)
- gen_nonproto (*insn_ptr);
+ puts("\n#endif /* GCC_INSN_FLAGS_H */");
- printf ("#endif /* !MD_CALL_PROTOTYPES */\n");
+ if (ferror (stdout) || fflush (stdout) || fclose (stdout))
+ return FATAL_EXIT_CODE;
- fflush (stdout);
- return (ferror (stdout) != 0 ? FATAL_EXIT_CODE : SUCCESS_EXIT_CODE);
+ return SUCCESS_EXIT_CODE;
}
/* Define this so we can link with print-rtl.o to get debug_rtx function. */
OSDN Git Service
