/* General utility routines for GDB, the GNU debugger.
- Copyright (C) 1986-2017 Free Software Foundation, Inc.
+ Copyright (C) 1986-2018 Free Software Foundation, Inc.
This file is part of GDB.
#include "common/gdb_optional.h"
#include "cp-support.h"
#include <algorithm>
+#include "common/pathstuff.h"
#if !HAVE_DECL_MALLOC
extern PTR malloc (); /* ARI: PTR */
because while they use the "cleanup API" they are not part of the
"cleanup API". */
-static void
-do_free_section_addr_info (void *arg)
-{
- free_section_addr_info ((struct section_addr_info *) arg);
-}
-
-struct cleanup *
-make_cleanup_free_section_addr_info (struct section_addr_info *addrs)
-{
- return make_cleanup (do_free_section_addr_info, addrs);
-}
-
/* Helper for make_cleanup_unpush_target. */
static void
&setdebuglist, &showdebuglist);
}
+/* See utils.h. */
+
+CORE_ADDR
+address_significant (gdbarch *gdbarch, CORE_ADDR addr)
+{
+ /* Truncate address to the significant bits of a target address,
+ avoiding shifts larger or equal than the width of a CORE_ADDR.
+ The local variable ADDR_BIT stops the compiler reporting a shift
+ overflow when it won't occur. */
+ int addr_bit = gdbarch_significant_addr_bit (gdbarch);
+
+ if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT))
+ addr &= ((CORE_ADDR) 1 << addr_bit) - 1;
+
+ return addr;
+}
+
const char *
paddress (struct gdbarch *gdbarch, CORE_ADDR addr)
{
return addr;
}
-gdb::unique_xmalloc_ptr<char>
-gdb_realpath (const char *filename)
-{
-/* On most hosts, we rely on canonicalize_file_name to compute
- the FILENAME's realpath.
-
- But the situation is slightly more complex on Windows, due to some
- versions of GCC which were reported to generate paths where
- backlashes (the directory separator) were doubled. For instance:
- c:\\some\\double\\slashes\\dir
- ... instead of ...
- c:\some\double\slashes\dir
- Those double-slashes were getting in the way when comparing paths,
- for instance when trying to insert a breakpoint as follow:
- (gdb) b c:/some/double/slashes/dir/foo.c:4
- No source file named c:/some/double/slashes/dir/foo.c:4.
- (gdb) b c:\some\double\slashes\dir\foo.c:4
- No source file named c:\some\double\slashes\dir\foo.c:4.
- To prevent this from happening, we need this function to always
- strip those extra backslashes. While canonicalize_file_name does
- perform this simplification, it only works when the path is valid.
- Since the simplification would be useful even if the path is not
- valid (one can always set a breakpoint on a file, even if the file
- does not exist locally), we rely instead on GetFullPathName to
- perform the canonicalization. */
-
-#if defined (_WIN32)
- {
- char buf[MAX_PATH];
- DWORD len = GetFullPathName (filename, MAX_PATH, buf, NULL);
-
- /* The file system is case-insensitive but case-preserving.
- So it is important we do not lowercase the path. Otherwise,
- we might not be able to display the original casing in a given
- path. */
- if (len > 0 && len < MAX_PATH)
- return gdb::unique_xmalloc_ptr<char> (xstrdup (buf));
- }
-#else
- {
- char *rp = canonicalize_file_name (filename);
-
- if (rp != NULL)
- return gdb::unique_xmalloc_ptr<char> (rp);
- }
-#endif
-
- /* This system is a lost cause, just dup the buffer. */
- return gdb::unique_xmalloc_ptr<char> (xstrdup (filename));
-}
-
#if GDB_SELF_TEST
static void
#endif /* GDB_SELF_TEST */
-/* Return a copy of FILENAME, with its directory prefix canonicalized
- by gdb_realpath. */
-
-gdb::unique_xmalloc_ptr<char>
-gdb_realpath_keepfile (const char *filename)
-{
- const char *base_name = lbasename (filename);
- char *dir_name;
- char *result;
-
- /* Extract the basename of filename, and return immediately
- a copy of filename if it does not contain any directory prefix. */
- if (base_name == filename)
- return gdb::unique_xmalloc_ptr<char> (xstrdup (filename));
-
- dir_name = (char *) alloca ((size_t) (base_name - filename + 2));
- /* Allocate enough space to store the dir_name + plus one extra
- character sometimes needed under Windows (see below), and
- then the closing \000 character. */
- strncpy (dir_name, filename, base_name - filename);
- dir_name[base_name - filename] = '\000';
-
-#ifdef HAVE_DOS_BASED_FILE_SYSTEM
- /* We need to be careful when filename is of the form 'd:foo', which
- is equivalent of d:./foo, which is totally different from d:/foo. */
- if (strlen (dir_name) == 2 && isalpha (dir_name[0]) && dir_name[1] == ':')
- {
- dir_name[2] = '.';
- dir_name[3] = '\000';
- }
-#endif
-
- /* Canonicalize the directory prefix, and build the resulting
- filename. If the dirname realpath already contains an ending
- directory separator, avoid doubling it. */
- gdb::unique_xmalloc_ptr<char> path_storage = gdb_realpath (dir_name);
- const char *real_path = path_storage.get ();
- if (IS_DIR_SEPARATOR (real_path[strlen (real_path) - 1]))
- result = concat (real_path, base_name, (char *) NULL);
- else
- result = concat (real_path, SLASH_STRING, base_name, (char *) NULL);
-
- return gdb::unique_xmalloc_ptr<char> (result);
-}
-
-/* Return PATH in absolute form, performing tilde-expansion if necessary.
- PATH cannot be NULL or the empty string.
- This does not resolve symlinks however, use gdb_realpath for that. */
-
-gdb::unique_xmalloc_ptr<char>
-gdb_abspath (const char *path)
-{
- gdb_assert (path != NULL && path[0] != '\0');
-
- if (path[0] == '~')
- return gdb::unique_xmalloc_ptr<char> (tilde_expand (path));
-
- if (IS_ABSOLUTE_PATH (path))
- return gdb::unique_xmalloc_ptr<char> (xstrdup (path));
-
- /* Beware the // my son, the Emacs barfs, the botch that catch... */
- return gdb::unique_xmalloc_ptr<char>
- (concat (current_directory,
- IS_DIR_SEPARATOR (current_directory[strlen (current_directory) - 1])
- ? "" : SLASH_STRING,
- path, (char *) NULL));
-}
-
ULONGEST
align_up (ULONGEST v, int n)
{
return make_cleanup (do_bpstat_clear_actions_cleanup, NULL);
}
-
-/* Helper for make_cleanup_free_char_ptr_vec. */
-
-static void
-do_free_char_ptr_vec (void *arg)
-{
- VEC (char_ptr) *char_ptr_vec = (VEC (char_ptr) *) arg;
-
- free_char_ptr_vec (char_ptr_vec);
-}
-
-/* Make cleanup handler calling xfree for each element of CHAR_PTR_VEC and
- final VEC_free for CHAR_PTR_VEC itself.
-
- You must not modify CHAR_PTR_VEC after this cleanup registration as the
- CHAR_PTR_VEC base address may change on its updates. Contrary to VEC_free
- this function does not (cannot) clear the pointer. */
-
-struct cleanup *
-make_cleanup_free_char_ptr_vec (VEC (char_ptr) *char_ptr_vec)
-{
- return make_cleanup (do_free_char_ptr_vec, char_ptr_vec);
-}
-
/* Substitute all occurences of string FROM by string TO in *STRINGP. *STRINGP
must come from xrealloc-compatible allocator and it may be updated. FROM
needs to be delimited by IS_DIR_SEPARATOR or DIRNAME_SEPARATOR (or be
projects / deliverable / binutils-gdb.git / blobdiff