rs6000: Add file support and functions for diagnostic support

2021-06-07  Bill Schmidt  <wschmidt@linux.ibm.com>

gcc/
	* config/rs6000/rs6000-gen-builtins.c (bif_file): New variable.
	(ovld_file): Likewise.
	(header_file): Likewise.
	(init_file): Likewise.
	(defines_file): Likewise.
	(pgm_path): Likewise.
	(bif_path): Likewise.
	(ovld_path): Likewise.
	(header_path): Likewise.
	(init_path): Likewise.
	(defines_path): Likewise.
	(LINELEN): New macro.
	(linebuf): New variable.
	(line): Likewise.
	(pos): Likewise.
	(diag): Likewise.
	(bif_diag): New function.
	(ovld_diag): Likewise.

1 files changed, 47 insertions, 0 deletions

diff --git a/gcc/config/rs6000/rs6000-gen-builtins.c b/gcc/config/rs6000/rs6000-gen-builtins.c
index 6ab7d7b..3c53c34 100644
--- a/gcc/config/rs6000/rs6000-gen-builtins.c
+++ b/gcc/config/rs6000/rs6000-gen-builtins.c
@@ -163,3 +163,50 @@ along with GCC; see the file COPYING3.  If not see
 #include <string.h>
 #include <assert.h>
 #include <unistd.h>
+
+/* Input and output file descriptors and pathnames.  */
+static FILE *bif_file;
+static FILE *ovld_file;
+static FILE *header_file;
+static FILE *init_file;
+static FILE *defines_file;
+
+static const char *pgm_path;
+static const char *bif_path;
+static const char *ovld_path;
+static const char *header_path;
+static const char *init_path;
+static const char *defines_path;
+
+/* Position information.  Note that "pos" is zero-indexed, but users
+   expect one-indexed column information, so representations of "pos"
+   as columns in diagnostic messages must be adjusted.  */
+#define LINELEN 1024
+static char linebuf[LINELEN];
+static int line;
+static int pos;
+
+/* Pointer to a diagnostic function.  */
+static void (*diag) (const char *, ...)
+  __attribute__ ((format (printf, 1, 2)));
+
+/* Custom diagnostics.  */
+static void __attribute__ ((format (printf, 1, 2)))
+bif_diag (const char * fmt, ...)
+{
+  va_list args;
+  fprintf (stderr, "%s:%d: ", bif_path, line);
+  va_start (args, fmt);
+  vfprintf (stderr, fmt, args);
+  va_end (args);
+}
+
+static void __attribute__ ((format (printf, 1, 2)))
+ovld_diag (const char * fmt, ...)
+{
+  va_list args;
+  fprintf (stderr, "%s:%d: ", ovld_path, line);
+  va_start (args, fmt);
+  vfprintf (stderr, fmt, args);
+  va_end (args);
+}