/* Precompiled header implementation for the C languages.
- Copyright (C) 2000, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
+ Copyright (C) 2000, 2002, 2003, 2004, 2005, 2007, 2008, 2009, 2010
+ 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)
+the Free Software Foundation; either version 3, or (at your option)
any later version.
GCC is distributed in the hope that it will be useful,
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, 51 Franklin Street, Fifth Floor,
-Boston, MA 02110-1301, USA. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "langhooks.h"
#include "hosthooks.h"
#include "target.h"
+#include "opts.h"
+#include "timevar.h"
/* This is a list of flag variables that must match exactly, and their
names for the error message. The possible values for *flag_var must
fit in a 'signed char'. */
-static const struct c_pch_matching
+static const struct c_pch_matching
{
int *flag_var;
const char *flag_name;
} pch_matching[] = {
{ &flag_exceptions, "-fexceptions" },
- { &flag_unit_at_a_time, "-funit-at-a-time" }
};
enum {
size_t target_data_length;
};
-struct c_pch_header
+struct c_pch_header
{
unsigned long asm_size;
};
get_ident (void)
{
static char result[IDENT_LENGTH];
- static const char template[IDENT_LENGTH] = "gpch.013";
+ static const char templ[] = "gpch.013";
static const char c_language_chars[] = "Co+O";
-
- memcpy (result, template, IDENT_LENGTH);
+
+ memcpy (result, templ, IDENT_LENGTH);
result[4] = c_language_chars[c_language];
return result;
}
/* Prepare to write a PCH file, if one is being written. This is
- called at the start of compilation.
+ called at the start of compilation.
Also, print out the executable checksum if -fverbose-asm is in effect. */
FILE *f;
struct c_pch_validity v;
void *target_validity;
- static const char partial_pch[IDENT_LENGTH] = "gpcWrite";
-
+ static const char partial_pch[] = "gpcWrite";
+
#ifdef ASM_COMMENT_START
if (flag_verbose_asm)
{
fputc ('\n', asm_out_file);
}
#endif
-
+
if (!pch_file)
return;
-
+
f = fopen (pch_file, "w+b");
if (f == NULL)
fatal_error ("can%'t create precompiled header %s: %m", pch_file);
pch_outfile = f;
gcc_assert (memcmp (executable_checksum, no_checksum, 16) != 0);
-
+
+ memset (&v, '\0', sizeof (v));
v.debug_info_type = write_symbols;
{
size_t i;
}
v.pch_init = &pch_init;
target_validity = targetm.get_pch_validity (&v.target_data_length);
-
+
if (fwrite (partial_pch, IDENT_LENGTH, 1, f) != 1
|| fwrite (executable_checksum, 16, 1, f) != 1
|| fwrite (&v, sizeof (v), 1, f) != 1
if (asm_file_name == NULL
|| strcmp (asm_file_name, "-") == 0)
fatal_error ("%qs is not a valid output file", asm_file_name);
-
+
asm_file_startpos = ftell (asm_out_file);
-
+
/* Let the debugging format deal with the PCHness. */
(*debug_hooks->handle_pch) (0);
-
+
cpp_save_state (parse_in, f);
}
long written;
struct c_pch_header h;
+ timevar_push (TV_PCH_SAVE);
+
(*debug_hooks->handle_pch) (1);
cpp_write_pch_deps (parse_in, pch_outfile);
asm_file_end = ftell (asm_out_file);
h.asm_size = asm_file_end - asm_file_startpos;
-
+
if (fwrite (&h, sizeof (h), 1, pch_outfile) != 1)
fatal_error ("can%'t write %s: %m", pch_file);
-
- buf = xmalloc (16384);
+
+ buf = XNEWVEC (char, 16384);
if (fseek (asm_out_file, asm_file_startpos, SEEK_SET) != 0)
fatal_error ("can%'t seek in %s: %m", asm_file_name);
fatal_error ("can%'t seek in %s: %m", asm_file_name);
gt_pch_save (pch_outfile);
+
+ timevar_push (TV_PCH_CPP_SAVE);
cpp_write_pch_state (parse_in, pch_outfile);
+ timevar_pop (TV_PCH_CPP_SAVE);
if (fseek (pch_outfile, 0, SEEK_SET) != 0
|| fwrite (get_ident (), IDENT_LENGTH, 1, pch_outfile) != 1)
fatal_error ("can%'t write %s: %m", pch_file);
fclose (pch_outfile);
+
+ timevar_pop (TV_PCH_SAVE);
}
/* Check the PCH file called NAME, open on FD, to see if it can be
fatal_error ("can%'t read %s: %m", name);
else if (sizeread != IDENT_LENGTH + 16)
{
- cpp_error (pfile, CPP_DL_WARNING, "%s: too short to be a PCH file",
- name);
+ if (cpp_get_options (pfile)->warn_invalid_pch)
+ cpp_error (pfile, CPP_DL_WARNING, "%s: too short to be a PCH file",
+ name);
return 2;
}
-
+
pch_ident = get_ident();
if (memcmp (ident, pch_ident, IDENT_LENGTH) != 0)
{
if (memcmp (ident, pch_ident, 5) == 0)
/* It's a PCH, for the right language, but has the wrong version.
*/
- cpp_error (pfile, CPP_DL_WARNING,
+ cpp_error (pfile, CPP_DL_WARNING,
"%s: not compatible with this GCC version", name);
else if (memcmp (ident, pch_ident, 4) == 0)
/* It's a PCH for the wrong language. */
cpp_error (pfile, CPP_DL_WARNING, "%s: not for %s", name,
lang_hooks.name);
- else
+ else
/* Not any kind of PCH. */
cpp_error (pfile, CPP_DL_WARNING, "%s: not a PCH file", name);
}
&& write_symbols != NO_DEBUG)
{
if (cpp_get_options (pfile)->warn_invalid_pch)
- cpp_error (pfile, CPP_DL_WARNING,
+ cpp_error (pfile, CPP_DL_WARNING,
"%s: created with -g%s, but used with -g%s", name,
debug_type_names[v.debug_info_type],
debug_type_names[write_symbols]);
if (*pch_matching[i].flag_var != v.match[i])
{
if (cpp_get_options (pfile)->warn_invalid_pch)
- cpp_error (pfile, CPP_DL_WARNING,
+ cpp_error (pfile, CPP_DL_WARNING,
"%s: settings for %s do not match", name,
pch_matching[i].flag_name);
return 2;
/* If the text segment was not loaded at the same address as it was
when the PCH file was created, function pointers loaded from the
PCH will not be valid. We could in theory remap all the function
- pointers, but no support for that exists at present.
+ pointers, but no support for that exists at present.
Since we have the same executable, it should only be necessary to
check one function. */
if (v.pch_init != &pch_init)
{
if (cpp_get_options (pfile)->warn_invalid_pch)
- cpp_error (pfile, CPP_DL_WARNING,
+ cpp_error (pfile, CPP_DL_WARNING,
"%s: had text segment at different address", name);
return 2;
}
{
void *this_file_data = xmalloc (v.target_data_length);
const char *msg;
-
+
if ((size_t) read (fd, this_file_data, v.target_data_length)
!= v.target_data_length)
fatal_error ("can%'t read %s: %m", name);
/* Check the preprocessor macros are the same as when the PCH was
generated. */
-
+
result = cpp_valid_state (pfile, name, fd);
if (result == -1)
return 2;
FILE *f;
struct c_pch_header h;
struct save_macro_data *smd;
-
+ expanded_location saved_loc;
+ bool saved_trace_includes;
+
+ timevar_push (TV_PCH_RESTORE);
+
f = fdopen (fd, "rb");
if (f == NULL)
{
cpp_errno (pfile, CPP_DL_ERROR, "calling fdopen");
- return;
+ close (fd);
+ goto end;
}
cpp_get_callbacks (parse_in)->valid_pch = NULL;
if (fread (&h, sizeof (h), 1, f) != 1)
{
cpp_errno (pfile, CPP_DL_ERROR, "reading");
- return;
+ fclose (f);
+ goto end;
}
if (!flag_preprocess_only)
{
unsigned long written;
- char * buf = xmalloc (16384);
+ char * buf = XNEWVEC (char, 16384);
for (written = 0; written < h.asm_size; )
{
cpp_errno (pfile, CPP_DL_ERROR, "seeking");
}
+ /* Save the location and then restore it after reading the PCH. */
+ saved_loc = expand_location (line_table->highest_line);
+ saved_trace_includes = line_table->trace_includes;
+
+ timevar_push (TV_PCH_CPP_RESTORE);
cpp_prepare_state (pfile, &smd);
+ timevar_pop (TV_PCH_CPP_RESTORE);
gt_pch_restore (f);
+ timevar_push (TV_PCH_CPP_RESTORE);
if (cpp_read_state (pfile, name, f, smd) != 0)
- return;
+ {
+ fclose (f);
+ timevar_pop (TV_PCH_CPP_RESTORE);
+ goto end;
+ }
+ timevar_pop (TV_PCH_CPP_RESTORE);
+
fclose (f);
-
+
+ line_table->trace_includes = saved_trace_includes;
+ cpp_set_line_map (pfile, line_table);
+ linemap_add (line_table, LC_RENAME, 0, saved_loc.file, saved_loc.line);
+
/* Give the front end a chance to take action after a PCH file has
been loaded. */
if (lang_post_pch_load)
(*lang_post_pch_load) ();
+
+end:
+ timevar_pop (TV_PCH_RESTORE);
}
/* Indicate that no more PCH files should be read. */
#endif
void
-c_common_pch_pragma (cpp_reader *pfile)
+c_common_pch_pragma (cpp_reader *pfile, const char *name)
{
- tree name_t;
- const char *name;
int fd;
- if (pragma_lex (&name_t) != CPP_STRING)
- {
- error ("malformed #pragma GCC pch_preprocess, ignored");
- return;
- }
-
if (!cpp_get_options (pfile)->preprocessed)
{
error ("pch_preprocess pragma should only be used with -fpreprocessed");
- inform ("use #include instead");
+ inform (input_location, "use #include instead");
return;
}
- name = TREE_STRING_POINTER (name_t);
-
fd = open (name, O_RDONLY | O_BINARY, 0666);
if (fd == -1)
fatal_error ("%s: couldn%'t open PCH file: %m", name);
-
+
if (c_common_valid_pch (pfile, name, fd) != 1)
{
if (!cpp_get_options (pfile)->warn_invalid_pch)
- inform ("use -Winvalid-pch for more information");
+ inform (input_location, "use -Winvalid-pch for more information");
fatal_error ("%s: PCH file was invalid", name);
}
-
+
c_common_read_pch (pfile, name, fd, name);
-
+
close (fd);
}
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