diff options
Diffstat (limited to 'toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch')
| -rw-r--r-- | toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch | 181 |
1 files changed, 181 insertions, 0 deletions
diff --git a/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch b/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch new file mode 100644 index 0000000000..60729dd7fe --- /dev/null +++ b/toolchain/gcc/patches/7.2.0/950-cpp_file_path_translation.patch @@ -0,0 +1,181 @@ +commit 331735a357a73c7b8adc205241ac3cc6543d985e +Author: Felix Fietkau <nbd@openwrt.org> +Date: Tue Nov 17 12:38:22 2015 +0000 + + gcc: add a patch to 5.x that supports translation of __FILE__ paths + + Signed-off-by: Felix Fietkau <nbd@openwrt.org> + + SVN-Revision: 47490 + +Forward ported from attachment to https://gcc.gnu.org/bugzilla/show_bug.cgi?id=47047 + +--- a/gcc/c-family/c-opts.c ++++ b/gcc/c-family/c-opts.c +@@ -588,6 +588,10 @@ c_common_handle_option (size_t scode, co + add_path (xstrdup (arg), SYSTEM, 0, true); + break; + ++ case OPT_iremap: ++ add_cpp_remap_path (arg); ++ break; ++ + case OPT_iwithprefix: + add_prefixed_path (arg, SYSTEM); + break; +--- a/gcc/c-family/c.opt ++++ b/gcc/c-family/c.opt +@@ -1825,6 +1825,10 @@ iquote + C ObjC C++ ObjC++ Joined Separate MissingArgError(missing path after %qs) + -iquote <dir> Add <dir> to the end of the quote include path. + ++iremap ++C ObjC C++ ObjC++ Joined Separate ++-iremap <src:dst> Convert <src> to <dst> if it occurs as prefix in __FILE__. ++ + iwithprefix + C ObjC C++ ObjC++ Joined Separate + -iwithprefix <dir> Add <dir> to the end of the system include path. +--- a/gcc/doc/cpp.texi ++++ b/gcc/doc/cpp.texi +@@ -4272,6 +4272,7 @@ Refer to the GCC manual for full documen + @c man begin SYNOPSIS + cpp [@option{-D}@var{macro}[=@var{defn}]@dots{}] [@option{-U}@var{macro}] + [@option{-I}@var{dir}@dots{}] [@option{-iquote}@var{dir}@dots{}] ++ [@option{-iremap}@var{src}:@var{dst}] + [@option{-M}|@option{-MM}] [@option{-MG}] [@option{-MF} @var{filename}] + [@option{-MP}] [@option{-MQ} @var{target}@dots{}] + [@option{-MT} @var{target}@dots{}] +--- a/gcc/doc/cppopts.texi ++++ b/gcc/doc/cppopts.texi +@@ -220,6 +220,12 @@ extensions @samp{.i}, @samp{.ii} or @sam + extensions that GCC uses for preprocessed files created by + @option{-save-temps}. + ++@item -iremap @var{src}:@var{dst} ++@opindex iremap ++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time. ++This option can be specified more than once. Processing stops at the first ++match. ++ + @item -fdirectives-only + @opindex fdirectives-only + When preprocessing, handle directives, but do not expand macros. +--- a/gcc/doc/invoke.texi ++++ b/gcc/doc/invoke.texi +@@ -11863,6 +11863,12 @@ by @option{-fplugin=@var{name}} instead + @option{-fplugin=@var{path}/@var{name}.so}. This option is not meant + to be used by the user, but only passed by the driver. + ++@item -iremap @var{src}:@var{dst} ++@opindex iremap ++Replace the prefix @var{src} in __FILE__ with @var{dst} at expansion time. ++This option can be specified more than once. Processing stops at the first ++match. ++ + @item -L@var{dir} + @opindex L + Add directory @var{dir} to the list of directories to be searched +--- a/libcpp/include/cpplib.h ++++ b/libcpp/include/cpplib.h +@@ -820,6 +820,9 @@ extern void cpp_set_lang (cpp_reader *, + /* Set the include paths. */ + extern void cpp_set_include_chains (cpp_reader *, cpp_dir *, cpp_dir *, int); + ++/* Provide src:dst pair for __FILE__ remapping. */ ++extern void add_cpp_remap_path (const char *); ++ + /* Call these to get pointers to the options, callback, and deps + structures for a given reader. These pointers are good until you + call cpp_finish on that reader. You can either edit the callbacks +--- a/libcpp/macro.c ++++ b/libcpp/macro.c +@@ -227,6 +227,64 @@ static const char * const monthnames[] = + "Jul", "Aug", "Sep", "Oct", "Nov", "Dec" + }; + ++static size_t remap_pairs; ++static char **remap_src; ++static char **remap_dst; ++ ++void ++add_cpp_remap_path (const char *arg) ++{ ++ const char *arg_dst; ++ size_t len; ++ ++ arg_dst = strchr(arg, ':'); ++ if (arg_dst == NULL) ++ { ++ fprintf(stderr, "Invalid argument for -iremap\n"); ++ exit(1); ++ } ++ ++ len = arg_dst - arg; ++ ++arg_dst; ++ ++ remap_src = (char **) xrealloc(remap_src, sizeof(char *) * (remap_pairs + 1)); ++ remap_dst = (char **) xrealloc(remap_dst, sizeof(char *) * (remap_pairs + 1)); ++ ++ remap_src[remap_pairs] = (char *) xmalloc(len + 1); ++ memcpy(remap_src[remap_pairs], arg, len); ++ remap_src[remap_pairs][len] = '\0'; ++ remap_dst[remap_pairs] = xstrdup(arg_dst); ++ ++remap_pairs; ++} ++ ++static const char * ++cpp_remap_file (const char *arg, char **tmp_name) ++{ ++ char *result; ++ size_t i, len; ++ ++ for (i = 0; i < remap_pairs; ++i) ++ { ++ len = strlen (remap_src[i]); ++ if (strncmp (remap_src[i], arg, len)) ++ continue; ++ if (arg[len] == '\0') ++ return xstrdup (remap_dst[i]); ++ if (arg[len] != '/') ++ continue; ++ arg += len; ++ len = strlen (remap_dst[i]); ++ result = (char *) xmalloc (len + strlen (arg) + 1); ++ memcpy(result, remap_dst[i], len); ++ strcpy(result + len, arg); ++ *tmp_name = result; ++ ++ return result; ++ } ++ ++ return arg; ++} ++ + /* Helper function for builtin_macro. Returns the text generated by + a builtin macro. */ + const uchar * +@@ -290,6 +348,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi + { + unsigned int len; + const char *name; ++ char *tmp_name = NULL; + uchar *buf; + + if (node->value.builtin == BT_FILE) +@@ -301,6 +360,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi + if (!name) + abort (); + } ++ name = cpp_remap_file (name, &tmp_name); + len = strlen (name); + buf = _cpp_unaligned_alloc (pfile, len * 2 + 3); + result = buf; +@@ -308,6 +368,7 @@ _cpp_builtin_macro_text (cpp_reader *pfi + buf = cpp_quote_string (buf + 1, (const unsigned char *) name, len); + *buf++ = '"'; + *buf = '\0'; ++ free (tmp_name); + } + break; + |