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Diffstat (limited to 'arch/s390/tools/gen_facilities.c')
-rw-r--r--arch/s390/tools/gen_facilities.c67
1 files changed, 67 insertions, 0 deletions
diff --git a/arch/s390/tools/gen_facilities.c b/arch/s390/tools/gen_facilities.c
new file mode 100644
index 000000000000..e2660d27889b
--- /dev/null
+++ b/arch/s390/tools/gen_facilities.c
@@ -0,0 +1,67 @@
+/*
+ * Simple program to generate defines out of facility lists that use the bit
+ * numbering scheme from the Princples of Operations: most significant bit
+ * has bit number 0.
+ *
+ * Copyright IBM Corp. 2015
+ *
+ */
+
+#define S390_GEN_FACILITIES_C
+
+#include <strings.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdio.h>
+#include <asm/facilities_src.h>
+
+static void print_facility_list(struct facility_def *def)
+{
+ unsigned int high, bit, dword, i;
+ unsigned long long *array;
+
+ array = calloc(1, 8);
+ if (!array)
+ exit(EXIT_FAILURE);
+ high = 0;
+ for (i = 0; def->bits[i] != -1; i++) {
+ bit = 63 - (def->bits[i] & 63);
+ dword = def->bits[i] / 64;
+ if (dword > high) {
+ array = realloc(array, (dword + 1) * 8);
+ if (!array)
+ exit(EXIT_FAILURE);
+ memset(array + high + 1, 0, (dword - high) * 8);
+ high = dword;
+ }
+ array[dword] |= 1ULL << bit;
+ }
+ printf("#define %s ", def->name);
+ for (i = 0; i <= high; i++)
+ printf("_AC(0x%016llx,UL)%c", array[i], i < high ? ',' : '\n');
+ printf("#define %s_DWORDS %d\n", def->name, high + 1);
+ free(array);
+}
+
+static void print_facility_lists(void)
+{
+ unsigned int i;
+
+ for (i = 0; i < sizeof(facility_defs) / sizeof(facility_defs[0]); i++)
+ print_facility_list(&facility_defs[i]);
+}
+
+int main(int argc, char **argv)
+{
+ printf("#ifndef __ASM_S390_FACILITIES__\n");
+ printf("#define __ASM_S390_FACILITIES__\n");
+ printf("/*\n");
+ printf(" * DO NOT MODIFY.\n");
+ printf(" *\n");
+ printf(" * This file was generated by %s\n", __FILE__);
+ printf(" */\n\n");
+ printf("#include <linux/const.h>\n\n");
+ print_facility_lists();
+ printf("\n#endif\n");
+ return 0;
+}