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lib.c
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/*
* 'sparse' library helper routines.
*
* Copyright (C) 2003 Transmeta Corp.
* 2003-2004 Linus Torvalds
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include <ctype.h>
#include <fcntl.h>
#include <stdarg.h>
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <assert.h>
#include <sys/types.h>
#include "lib.h"
#include "allocate.h"
#include "token.h"
#include "parse.h"
#include "symbol.h"
#include "expression.h"
#include "scope.h"
#include "linearize.h"
#include "target.h"
#include "version.h"
int verbose, optimize, optimize_size, preprocessing;
int die_if_error = 0;
int has_error = 0;
#ifndef __GNUC__
# define __GNUC__ 2
# define __GNUC_MINOR__ 95
# define __GNUC_PATCHLEVEL__ 0
#endif
int gcc_major = __GNUC__;
int gcc_minor = __GNUC_MINOR__;
int gcc_patchlevel = __GNUC_PATCHLEVEL__;
static const char *gcc_base_dir = GCC_BASE;
static const char *multiarch_dir = MULTIARCH_TRIPLET;
struct token *skip_to(struct token *token, int op)
{
while (!match_op(token, op) && !eof_token(token))
token = token->next;
return token;
}
struct token *expect(struct token *token, int op, const char *where)
{
if (!match_op(token, op)) {
static struct token bad_token;
if (token != &bad_token) {
bad_token.next = token;
sparse_error(token->pos, "Expected %s %s", show_special(op), where);
sparse_error(token->pos, "got %s", show_token(token));
}
if (op == ';')
return skip_to(token, op);
return &bad_token;
}
return token->next;
}
unsigned int hexval(unsigned int c)
{
int retval = 256;
switch (c) {
case '0'...'9':
retval = c - '0';
break;
case 'a'...'f':
retval = c - 'a' + 10;
break;
case 'A'...'F':
retval = c - 'A' + 10;
break;
}
return retval;
}
static void do_warn(const char *type, struct position pos, const char * fmt, va_list args)
{
static char buffer[512];
const char *name;
vsprintf(buffer, fmt, args);
name = stream_name(pos.stream);
fprintf(stderr, "%s:%d:%d: %s%s\n",
name, pos.line, pos.pos, type, buffer);
}
static int max_warnings = 100;
static int show_info = 1;
void info(struct position pos, const char * fmt, ...)
{
va_list args;
if (!show_info)
return;
va_start(args, fmt);
do_warn("", pos, fmt, args);
va_end(args);
}
static void do_error(struct position pos, const char * fmt, va_list args)
{
static int errors = 0;
die_if_error = 1;
show_info = 1;
/* Shut up warnings after an error */
has_error |= ERROR_CURR_PHASE;
if (errors > 100) {
static int once = 0;
show_info = 0;
if (once)
return;
fmt = "too many errors";
once = 1;
}
do_warn("error: ", pos, fmt, args);
errors++;
}
void warning(struct position pos, const char * fmt, ...)
{
va_list args;
if (Wsparse_error) {
va_start(args, fmt);
do_error(pos, fmt, args);
va_end(args);
return;
}
if (!max_warnings || has_error) {
show_info = 0;
return;
}
if (!--max_warnings) {
show_info = 0;
fmt = "too many warnings";
}
va_start(args, fmt);
do_warn("warning: ", pos, fmt, args);
va_end(args);
}
void sparse_error(struct position pos, const char * fmt, ...)
{
va_list args;
va_start(args, fmt);
do_error(pos, fmt, args);
va_end(args);
}
void expression_error(struct expression *expr, const char *fmt, ...)
{
va_list args;
va_start(args, fmt);
do_error(expr->pos, fmt, args);
va_end(args);
expr->ctype = &bad_ctype;
}
NORETURN_ATTR
void error_die(struct position pos, const char * fmt, ...)
{
va_list args;
va_start(args, fmt);
do_warn("error: ", pos, fmt, args);
va_end(args);
exit(1);
}
NORETURN_ATTR
void die(const char *fmt, ...)
{
va_list args;
static char buffer[512];
va_start(args, fmt);
vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
fprintf(stderr, "%s\n", buffer);
exit(1);
}
static struct token *pre_buffer_begin = NULL;
static struct token *pre_buffer_end = NULL;
int Waddress = 0;
int Waddress_space = 1;
int Wbitwise = 1;
int Wcast_to_as = 0;
int Wcast_truncate = 1;
int Wconstexpr_not_const = 0;
int Wcontext = 1;
int Wdecl = 1;
int Wdeclarationafterstatement = -1;
int Wdefault_bitfield_sign = 0;
int Wdesignated_init = 1;
int Wdo_while = 0;
int Winit_cstring = 0;
int Wenum_mismatch = 1;
int Wsparse_error = 0;
int Wmemcpy_max_count = 1;
int Wnon_pointer_null = 1;
int Wold_initializer = 1;
int Wone_bit_signed_bitfield = 1;
int Woverride_init = 1;
int Woverride_init_all = 0;
int Woverride_init_whole_range = 0;
int Wparen_string = 0;
int Wptr_subtraction_blows = 0;
int Wreturn_void = 0;
int Wshadow = 0;
int Wsizeof_bool = 0;
int Wtautological_compare = 0;
int Wtransparent_union = 0;
int Wtypesign = 0;
int Wundef = 0;
int Wuninitialized = 1;
int Wunknown_attribute = 0;
int Wvla = 1;
int dump_macro_defs = 0;
int dbg_entry = 0;
int dbg_dead = 0;
int fmem_report = 0;
int fdump_linearize;
unsigned long long fmemcpy_max_count = 100000;
int preprocess_only;
static enum { STANDARD_C89,
STANDARD_C94,
STANDARD_C99,
STANDARD_C11,
STANDARD_GNU11,
STANDARD_GNU89,
STANDARD_GNU99, } standard = STANDARD_GNU89;
#define ARCH_LP32 0
#define ARCH_LP64 1
#define ARCH_LLP64 2
#ifdef __x86_64__
#define ARCH_M64_DEFAULT ARCH_LP64
#else
#define ARCH_M64_DEFAULT ARCH_LP32
#endif
int arch_m64 = ARCH_M64_DEFAULT;
int arch_msize_long = 0;
#ifdef __BIG_ENDIAN__
#define ARCH_BIG_ENDIAN 1
#else
#define ARCH_BIG_ENDIAN 0
#endif
int arch_big_endian = ARCH_BIG_ENDIAN;
#define CMDLINE_INCLUDE 20
static int cmdline_include_nr = 0;
static char *cmdline_include[CMDLINE_INCLUDE];
void add_pre_buffer(const char *fmt, ...)
{
va_list args;
unsigned int size;
struct token *begin, *end;
char buffer[4096];
va_start(args, fmt);
size = vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
begin = tokenize_buffer(buffer, size, &end);
if (!pre_buffer_begin)
pre_buffer_begin = begin;
if (pre_buffer_end)
pre_buffer_end->next = begin;
pre_buffer_end = end;
}
static char **handle_switch_D(char *arg, char **next)
{
const char *name = arg + 1;
const char *value = "1";
if (!*name || isspace((unsigned char)*name))
die("argument to `-D' is missing");
for (;;) {
char c;
c = *++arg;
if (!c)
break;
if (isspace((unsigned char)c) || c == '=') {
*arg = '\0';
value = arg + 1;
break;
}
}
add_pre_buffer("#define %s %s\n", name, value);
return next;
}
static char **handle_switch_E(char *arg, char **next)
{
if (arg[1] == '\0')
preprocess_only = 1;
return next;
}
static char **handle_switch_I(char *arg, char **next)
{
char *path = arg+1;
switch (arg[1]) {
case '-':
add_pre_buffer("#split_include\n");
break;
case '\0': /* Plain "-I" */
path = *++next;
if (!path)
die("missing argument for -I option");
/* Fall through */
default:
add_pre_buffer("#add_include \"%s/\"\n", path);
}
return next;
}
static void add_cmdline_include(char *filename)
{
if (cmdline_include_nr >= CMDLINE_INCLUDE)
die("too many include files for %s\n", filename);
cmdline_include[cmdline_include_nr++] = filename;
}
static char **handle_switch_i(char *arg, char **next)
{
if (*next && !strcmp(arg, "include"))
add_cmdline_include(*++next);
else if (*next && !strcmp(arg, "imacros"))
add_cmdline_include(*++next);
else if (*next && !strcmp(arg, "isystem")) {
char *path = *++next;
if (!path)
die("missing argument for -isystem option");
add_pre_buffer("#add_isystem \"%s/\"\n", path);
} else if (*next && !strcmp(arg, "idirafter")) {
char *path = *++next;
if (!path)
die("missing argument for -idirafter option");
add_pre_buffer("#add_dirafter \"%s/\"\n", path);
}
return next;
}
static char **handle_switch_M(char *arg, char **next)
{
if (!strcmp(arg, "MF") || !strcmp(arg,"MQ") || !strcmp(arg,"MT")) {
if (!*next)
die("missing argument for -%s option", arg);
return next + 1;
}
return next;
}
static char **handle_multiarch_dir(char *arg, char **next)
{
multiarch_dir = *++next;
if (!multiarch_dir)
die("missing argument for -multiarch-dir option");
return next;
}
static char **handle_switch_m(char *arg, char **next)
{
if (!strcmp(arg, "m64")) {
arch_m64 = ARCH_LP64;
} else if (!strcmp(arg, "m32")) {
arch_m64 = ARCH_LP32;
} else if (!strcmp(arg, "msize-llp64")) {
arch_m64 = ARCH_LLP64;
} else if (!strcmp(arg, "msize-long")) {
arch_msize_long = 1;
} else if (!strcmp(arg, "multiarch-dir")) {
return handle_multiarch_dir(arg, next);
} else if (!strcmp(arg, "mbig-endian")) {
arch_big_endian = 1;
} else if (!strcmp(arg, "mlittle-endian")) {
arch_big_endian = 0;
}
return next;
}
static void handle_arch_m64_finalize(void)
{
switch (arch_m64) {
case ARCH_LP32:
/* default values */
return;
case ARCH_LP64:
bits_in_long = 64;
max_int_alignment = 8;
size_t_ctype = &ulong_ctype;
ssize_t_ctype = &long_ctype;
add_pre_buffer("#weak_define __LP64__ 1\n");
add_pre_buffer("#weak_define _LP64 1\n");
goto case_64bit_common;
case ARCH_LLP64:
bits_in_long = 32;
max_int_alignment = 4;
size_t_ctype = &ullong_ctype;
ssize_t_ctype = &llong_ctype;
add_pre_buffer("#weak_define __LLP64__ 1\n");
goto case_64bit_common;
case_64bit_common:
bits_in_pointer = 64;
pointer_alignment = 8;
#ifdef __x86_64__
add_pre_buffer("#weak_define __x86_64__ 1\n");
#endif
break;
}
}
static void handle_arch_msize_long_finalize(void)
{
if (arch_msize_long) {
size_t_ctype = &ulong_ctype;
ssize_t_ctype = &long_ctype;
}
}
static void handle_arch_finalize(void)
{
handle_arch_m64_finalize();
handle_arch_msize_long_finalize();
}
static int handle_simple_switch(const char *arg, const char *name, int *flag)
{
int val = 1;
// Prefixe "no-" mean to turn flag off.
if (strncmp(arg, "no-", 3) == 0) {
arg += 3;
val = 0;
}
if (strcmp(arg, name) == 0) {
*flag = val;
return 1;
}
// not handled
return 0;
}
static char **handle_switch_o(char *arg, char **next)
{
if (!strcmp (arg, "o")) { // "-o foo"
if (!*++next)
die("argument to '-o' is missing");
}
// else "-ofoo"
return next;
}
static const struct warning {
const char *name;
int *flag;
} warnings[] = {
{ "address", &Waddress },
{ "address-space", &Waddress_space },
{ "bitwise", &Wbitwise },
{ "cast-to-as", &Wcast_to_as },
{ "cast-truncate", &Wcast_truncate },
{ "constexpr-not-const", &Wconstexpr_not_const},
{ "context", &Wcontext },
{ "decl", &Wdecl },
{ "declaration-after-statement", &Wdeclarationafterstatement },
{ "default-bitfield-sign", &Wdefault_bitfield_sign },
{ "designated-init", &Wdesignated_init },
{ "do-while", &Wdo_while },
{ "enum-mismatch", &Wenum_mismatch },
{ "init-cstring", &Winit_cstring },
{ "memcpy-max-count", &Wmemcpy_max_count },
{ "non-pointer-null", &Wnon_pointer_null },
{ "old-initializer", &Wold_initializer },
{ "one-bit-signed-bitfield", &Wone_bit_signed_bitfield },
{ "override-init", &Woverride_init },
{ "override-init-all", &Woverride_init_all },
{ "paren-string", &Wparen_string },
{ "ptr-subtraction-blows", &Wptr_subtraction_blows },
{ "return-void", &Wreturn_void },
{ "shadow", &Wshadow },
{ "sizeof-bool", &Wsizeof_bool },
{ "sparse-error", &Wsparse_error },
{ "tautological-compare", &Wtautological_compare },
{ "transparent-union", &Wtransparent_union },
{ "typesign", &Wtypesign },
{ "undef", &Wundef },
{ "uninitialized", &Wuninitialized },
{ "unknown-attribute", &Wunknown_attribute },
{ "vla", &Wvla },
};
enum {
WARNING_OFF,
WARNING_ON,
WARNING_FORCE_OFF
};
static char **handle_onoff_switch(char *arg, char **next, const struct warning warnings[], int n)
{
int flag = WARNING_ON;
char *p = arg + 1;
unsigned i;
if (!strcmp(p, "sparse-all")) {
for (i = 0; i < n; i++) {
if (*warnings[i].flag != WARNING_FORCE_OFF && warnings[i].flag != &Wsparse_error)
*warnings[i].flag = WARNING_ON;
}
}
// Prefixes "no" and "no-" mean to turn warning off.
if (p[0] == 'n' && p[1] == 'o') {
p += 2;
if (p[0] == '-')
p++;
flag = WARNING_FORCE_OFF;
}
for (i = 0; i < n; i++) {
if (!strcmp(p,warnings[i].name)) {
*warnings[i].flag = flag;
return next;
}
}
// Unknown.
return NULL;
}
static char **handle_switch_W(char *arg, char **next)
{
char ** ret = handle_onoff_switch(arg, next, warnings, ARRAY_SIZE(warnings));
if (ret)
return ret;
// Unknown.
return next;
}
static struct warning debugs[] = {
{ "entry", &dbg_entry},
{ "dead", &dbg_dead},
};
static char **handle_switch_v(char *arg, char **next)
{
char ** ret = handle_onoff_switch(arg, next, debugs, ARRAY_SIZE(debugs));
if (ret)
return ret;
// Unknown.
do {
verbose++;
} while (*++arg == 'v');
return next;
}
static struct warning dumps[] = {
{ "D", &dump_macro_defs},
};
static char **handle_switch_d(char *arg, char **next)
{
char ** ret = handle_onoff_switch(arg, next, dumps, ARRAY_SIZE(dumps));
if (ret)
return ret;
return next;
}
static void handle_onoff_switch_finalize(const struct warning warnings[], int n)
{
unsigned i;
for (i = 0; i < n; i++) {
if (*warnings[i].flag == WARNING_FORCE_OFF)
*warnings[i].flag = WARNING_OFF;
}
}
static void handle_switch_W_finalize(void)
{
handle_onoff_switch_finalize(warnings, ARRAY_SIZE(warnings));
/* default Wdeclarationafterstatement based on the C dialect */
if (-1 == Wdeclarationafterstatement)
{
switch (standard)
{
case STANDARD_C89:
case STANDARD_C94:
Wdeclarationafterstatement = 1;
break;
case STANDARD_C99:
case STANDARD_GNU89:
case STANDARD_GNU99:
case STANDARD_C11:
case STANDARD_GNU11:
Wdeclarationafterstatement = 0;
break;
default:
assert (0);
}
}
}
static void handle_switch_v_finalize(void)
{
handle_onoff_switch_finalize(debugs, ARRAY_SIZE(debugs));
}
static char **handle_switch_U(char *arg, char **next)
{
const char *name = arg + 1;
add_pre_buffer ("#undef %s\n", name);
return next;
}
static char **handle_switch_O(char *arg, char **next)
{
int level = 1;
if (arg[1] >= '0' && arg[1] <= '9')
level = arg[1] - '0';
optimize = level;
optimize_size = arg[1] == 's';
return next;
}
static char **handle_switch_fmemcpy_max_count(char *arg, char **next)
{
unsigned long long val;
char *end;
val = strtoull(arg, &end, 0);
if (*end != '\0' || end == arg)
die("error: missing argument to \"-fmemcpy-max-count=\"");
if (val == 0)
val = ~0ULL;
fmemcpy_max_count = val;
return next;
}
static char **handle_switch_ftabstop(char *arg, char **next)
{
char *end;
unsigned long val;
if (*arg == '\0')
die("error: missing argument to \"-ftabstop=\"");
/* we silently ignore silly values */
val = strtoul(arg, &end, 10);
if (*end == '\0' && 1 <= val && val <= 100)
tabstop = val;
return next;
}
static char **handle_switch_fdump(char *arg, char **next)
{
if (!strncmp(arg, "linearize", 9)) {
arg += 9;
if (*arg == '\0')
fdump_linearize = 1;
else if (!strcmp(arg, "=only"))
fdump_linearize = 2;
else
goto err;
}
/* ignore others flags */
return next;
err:
die("error: unknown flag \"-fdump-%s\"", arg);
}
static char **handle_switch_f(char *arg, char **next)
{
arg++;
if (!strncmp(arg, "tabstop=", 8))
return handle_switch_ftabstop(arg+8, next);
if (!strncmp(arg, "dump-", 5))
return handle_switch_fdump(arg+5, next);
if (!strncmp(arg, "memcpy-max-count=", 17))
return handle_switch_fmemcpy_max_count(arg+17, next);
/* handle switches w/ arguments above, boolean and only boolean below */
if (handle_simple_switch(arg, "mem-report", &fmem_report))
return next;
return next;
}
static char **handle_switch_G(char *arg, char **next)
{
if (!strcmp (arg, "G") && *next)
return next + 1; // "-G 0"
else
return next; // "-G0" or (bogus) terminal "-G"
}
static char **handle_switch_a(char *arg, char **next)
{
if (!strcmp (arg, "ansi"))
standard = STANDARD_C89;
return next;
}
static char **handle_switch_s(char *arg, char **next)
{
if (!strncmp (arg, "std=", 4))
{
arg += 4;
if (!strcmp (arg, "c89") ||
!strcmp (arg, "iso9899:1990"))
standard = STANDARD_C89;
else if (!strcmp (arg, "iso9899:199409"))
standard = STANDARD_C94;
else if (!strcmp (arg, "c99") ||
!strcmp (arg, "c9x") ||
!strcmp (arg, "iso9899:1999") ||
!strcmp (arg, "iso9899:199x"))
standard = STANDARD_C99;
else if (!strcmp (arg, "gnu89"))
standard = STANDARD_GNU89;
else if (!strcmp (arg, "gnu99") || !strcmp (arg, "gnu9x"))
standard = STANDARD_GNU99;
else if (!strcmp(arg, "c11") ||
!strcmp(arg, "c1x") ||
!strcmp(arg, "iso9899:2011"))
standard = STANDARD_C11;
else if (!strcmp(arg, "gnu11"))
standard = STANDARD_GNU11;
else
die ("Unsupported C dialect");
}
return next;
}
static char **handle_nostdinc(char *arg, char **next)
{
add_pre_buffer("#nostdinc\n");
return next;
}
static char **handle_switch_n(char *arg, char **next)
{
if (!strcmp (arg, "nostdinc"))
return handle_nostdinc(arg, next);
return next;
}
static char **handle_base_dir(char *arg, char **next)
{
gcc_base_dir = *++next;
if (!gcc_base_dir)
die("missing argument for -gcc-base-dir option");
return next;
}
static char **handle_switch_g(char *arg, char **next)
{
if (!strcmp (arg, "gcc-base-dir"))
return handle_base_dir(arg, next);
return next;
}
static char **handle_version(char *arg, char **next)
{
printf("%s\n", SPARSE_VERSION);
exit(0);
}
static char **handle_param(char *arg, char **next)
{
char *value = NULL;
/* For now just skip any '--param=*' or '--param *' */
if (*arg == '\0') {
value = *++next;
} else if (isspace((unsigned char)*arg) || *arg == '=') {
value = ++arg;
}
if (!value)
die("missing argument for --param option");
return next;
}
struct switches {
const char *name;
char **(*fn)(char *, char **);
unsigned int prefix:1;
};
static char **handle_long_options(char *arg, char **next)
{
static struct switches cmd[] = {
{ "param", handle_param, 1 },
{ "version", handle_version },
{ NULL, NULL }
};
struct switches *s = cmd;
while (s->name) {
int optlen = strlen(s->name);
if (!strncmp(s->name, arg, optlen + !s->prefix))
return s->fn(arg + optlen, next);
s++;
}
return next;
}
static char **handle_switch(char *arg, char **next)
{
switch (*arg) {
case 'a': return handle_switch_a(arg, next);
case 'D': return handle_switch_D(arg, next);
case 'd': return handle_switch_d(arg, next);
case 'E': return handle_switch_E(arg, next);
case 'f': return handle_switch_f(arg, next);
case 'g': return handle_switch_g(arg, next);
case 'G': return handle_switch_G(arg, next);
case 'I': return handle_switch_I(arg, next);
case 'i': return handle_switch_i(arg, next);
case 'M': return handle_switch_M(arg, next);
case 'm': return handle_switch_m(arg, next);
case 'n': return handle_switch_n(arg, next);
case 'o': return handle_switch_o(arg, next);
case 'O': return handle_switch_O(arg, next);
case 's': return handle_switch_s(arg, next);
case 'U': return handle_switch_U(arg, next);
case 'v': return handle_switch_v(arg, next);
case 'W': return handle_switch_W(arg, next);
case '-': return handle_long_options(arg + 1, next);
default:
break;
}
/*
* Ignore unknown command line options:
* they're probably gcc switches
*/
return next;
}
static void predefined_sizeof(const char *name, unsigned bits)
{
add_pre_buffer("#weak_define __SIZEOF_%s__ %d\n", name, bits/8);
}
static void predefined_max(const char *name, const char *suffix, unsigned bits)
{
unsigned long long max = (1ULL << (bits - 1 )) - 1;
add_pre_buffer("#weak_define __%s_MAX__ %#llx%s\n", name, max, suffix);
}
static void predefined_type_size(const char *name, const char *suffix, unsigned bits)
{
predefined_max(name, suffix, bits);
predefined_sizeof(name, bits);
}
static void predefined_macros(void)
{
add_pre_buffer("#define __CHECKER__ 1\n");
predefined_sizeof("SHORT", bits_in_short);
predefined_max("SHRT", "", bits_in_short);
predefined_max("SCHAR", "", bits_in_char);
predefined_max("WCHAR", "", bits_in_wchar);
add_pre_buffer("#weak_define __CHAR_BIT__ %d\n", bits_in_char);
predefined_type_size("INT", "", bits_in_int);
predefined_type_size("LONG", "L", bits_in_long);
predefined_type_size("LONG_LONG", "LL", bits_in_longlong);
predefined_sizeof("INT128", 128);
predefined_sizeof("SIZE_T", bits_in_pointer);
predefined_sizeof("PTRDIFF_T", bits_in_pointer);
predefined_sizeof("POINTER", bits_in_pointer);
predefined_sizeof("FLOAT", bits_in_float);
predefined_sizeof("DOUBLE", bits_in_double);
predefined_sizeof("LONG_DOUBLE", bits_in_longdouble);
add_pre_buffer("#weak_define __%s_ENDIAN__ 1\n",
arch_big_endian ? "BIG" : "LITTLE");
add_pre_buffer("#weak_define __ORDER_LITTLE_ENDIAN__ 1234\n");
add_pre_buffer("#weak_define __ORDER_BIG_ENDIAN__ 4321\n");
add_pre_buffer("#weak_define __ORDER_PDP_ENDIAN__ 3412\n");
add_pre_buffer("#weak_define __BYTE_ORDER__ __ORDER_%s_ENDIAN__\n",
arch_big_endian ? "BIG" : "LITTLE");
}
void declare_builtin_functions(void)
{
/* Gaah. gcc knows tons of builtin <string.h> functions */
add_pre_buffer("extern void *__builtin_memchr(const void *, int, __SIZE_TYPE__);\n");
add_pre_buffer("extern void *__builtin_memcpy(void *, const void *, __SIZE_TYPE__);\n");
add_pre_buffer("extern void *__builtin_mempcpy(void *, const void *, __SIZE_TYPE__);\n");
add_pre_buffer("extern void *__builtin_memmove(void *, const void *, __SIZE_TYPE__);\n");
add_pre_buffer("extern void *__builtin_memset(void *, int, __SIZE_TYPE__);\n");
add_pre_buffer("extern int __builtin_memcmp(const void *, const void *, __SIZE_TYPE__);\n");
add_pre_buffer("extern char *__builtin_strcat(char *, const char *);\n");
add_pre_buffer("extern char *__builtin_strncat(char *, const char *, __SIZE_TYPE__);\n");
add_pre_buffer("extern int __builtin_strcmp(const char *, const char *);\n");
add_pre_buffer("extern int __builtin_strncmp(const char *, const char *, __SIZE_TYPE__);\n");
add_pre_buffer("extern int __builtin_strcasecmp(const char *, const char *);\n");
add_pre_buffer("extern int __builtin_strncasecmp(const char *, const char *, __SIZE_TYPE__);\n");
add_pre_buffer("extern char *__builtin_strchr(const char *, int);\n");
add_pre_buffer("extern char *__builtin_strrchr(const char *, int);\n");
add_pre_buffer("extern char *__builtin_strcpy(char *, const char *);\n");
add_pre_buffer("extern char *__builtin_strncpy(char *, const char *, __SIZE_TYPE__);\n");
add_pre_buffer("extern char *__builtin_strdup(const char *);\n");
add_pre_buffer("extern char *__builtin_strndup(const char *, __SIZE_TYPE__);\n");
add_pre_buffer("extern __SIZE_TYPE__ __builtin_strspn(const char *, const char *);\n");