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genksyms: pass symbol-prefix instead of arch 

Pass symbol-prefix to genksyms instead of arch, so that the decision
what symbol prefix to use is kept in one place.

Basically genksyms used to take a -a $ARCH argument and it used that to
determine whether to add an underscore symbol prefix. It's now changed
to take a -s $SYMBOL_PREFIX argument so that the caller decides whether
a symbol prefix is required. The build system then uses
CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX to determine whether to pass the
argument.

Signed-off-by: James Hogan <james.hogan@imgtec.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
This commit is contained in:
James Hogan 2013-03-18 19:38:56 +10:30 committed by Rusty Russell
parent a4b6a77b77
commit d70f82acf3
2 changed files with 9 additions and 12 deletions
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3
scripts/Makefile.build
View File

@ -211,7 +211,8 @@ $(obj)/%.i: $(src)/%.c FORCE
cmd_gensymtypes = \
$(CPP) -D__GENKSYMS__ $(c_flags) $< | \
$(GENKSYMS) $(if $(1), -T $(2)) -a $(ARCH) \
$(GENKSYMS) $(if $(1), -T $(2)) \
$(patsubst y,-s _,$(CONFIG_HAVE_UNDERSCORE_SYMBOL_PREFIX)) \
$(if $(KBUILD_PRESERVE),-p) \
-r $(firstword $(wildcard $(2:.symtypes=.symref) /dev/null))

18
scripts/genksyms/genksyms.c
View File

@ -45,7 +45,6 @@ int in_source_file;
static int flag_debug, flag_dump_defs, flag_reference, flag_dump_types,
flag_preserve, flag_warnings;
static const char *arch = "";
static const char *mod_prefix = "";
static int errors;
@ -731,7 +730,7 @@ static void genksyms_usage(void)
{
fputs("Usage:\n" "genksyms [-adDTwqhV] > /path/to/.tmp_obj.ver\n" "\n"
#ifdef __GNU_LIBRARY__
" -a, --arch Select architecture\n"
" -s, --symbol-prefix Select symbol prefix\n"
" -d, --debug Increment the debug level (repeatable)\n"
" -D, --dump Dump expanded symbol defs (for debugging only)\n"
" -r, --reference file Read reference symbols from a file\n"
@ -742,7 +741,7 @@ static void genksyms_usage(void)
" -h, --help Print this message\n"
" -V, --version Print the release version\n"
#else /* __GNU_LIBRARY__ */
" -a Select architecture\n"
" -s Select symbol prefix\n"
" -d Increment the debug level (repeatable)\n"
" -D Dump expanded symbol defs (for debugging only)\n"
" -r file Read reference symbols from a file\n"
@ -763,7 +762,7 @@ int main(int argc, char **argv)
#ifdef __GNU_LIBRARY__
struct option long_opts[] = {
{"arch", 1, 0, 'a'},
{"symbol-prefix", 1, 0, 's'},
{"debug", 0, 0, 'd'},
{"warnings", 0, 0, 'w'},
{"quiet", 0, 0, 'q'},
@ -776,14 +775,14 @@ int main(int argc, char **argv)
{0, 0, 0, 0}
};
while ((o = getopt_long(argc, argv, "a:dwqVDr:T:ph",
while ((o = getopt_long(argc, argv, "s:dwqVDr:T:ph",
&long_opts[0], NULL)) != EOF)
#else /* __GNU_LIBRARY__ */
while ((o = getopt(argc, argv, "a:dwqVDr:T:ph")) != EOF)
while ((o = getopt(argc, argv, "s:dwqVDr:T:ph")) != EOF)
#endif /* __GNU_LIBRARY__ */
switch (o) {
case 'a':
arch = optarg;
case 's':
mod_prefix = optarg;
break;
case 'd':
flag_debug++;
@ -826,9 +825,6 @@ int main(int argc, char **argv)
genksyms_usage();
return 1;
}
if ((strcmp(arch, "h8300") == 0) || (strcmp(arch, "blackfin") == 0) ||
(strcmp(arch, "metag") == 0))
mod_prefix = "_";
{
extern int yydebug;
extern int yy_flex_debug;