(GDB_INV_REF_REGPARM_STABS_LETTER): New macro.

(dbxout_parms): For gdb, output use GDB_INV_REF_REGPARM_STABS_LETTER
for parameters passed by invisible reference in registers.

From-SVN: r9063

diff --git a/gcc/dbxout.c b/gcc/dbxout.c
index 8cdf96f44dececd067bf63b4894604647b723a2b..7363b6fcce858a4c188da85d5e7e3f824ea67ec9 100644 (file)
--- a/gcc/dbxout.c
+++ b/gcc/dbxout.c
@@ -112,6 +112,11 @@ extern int errno;
 #define DBX_REGPARM_STABS_LETTER 'P'
 #endif
 
+/* This is used for parameters passed by invisible reference in a register.  */
+#ifndef GDB_INV_REF_REGPARM_STABS_LETTER
+#define GDB_INV_REF_REGPARM_STABS_LETTER 'a'
+#endif
+
 #ifndef DBX_MEMPARM_STABS_LETTER
 #define DBX_MEMPARM_STABS_LETTER 'p'
 #endif
@@ -2200,7 +2205,10 @@ dbxout_parms (parms)
            /* Parm passed in registers and lives in registers or nowhere.  */
 
            current_sym_code = DBX_REGPARM_STABS_CODE;
-           regparm_letter = DBX_REGPARM_STABS_LETTER;
+           if (use_gnu_debug_info_extensions)
+             regparm_letter = GDB_INV_REF_REGPARM_STABS_LETTER;
+           else
+             regparm_letter = DBX_REGPARM_STABS_LETTER;
 
            /* DECL_RTL looks like (MEM (REG...).  Get the register number.
               If it is an unallocated pseudo-reg, then use the register where
@@ -2220,13 +2228,13 @@ dbxout_parms (parms)
 
                fprintf (asmfile, "%s \"%s:%c", ASM_STABS_OP,
                         IDENTIFIER_POINTER (DECL_NAME (parms)),
-                        DBX_REGPARM_STABS_LETTER);
+                        regparm_letter);
              }
            else
              {
                current_sym_nchars = 8;
                fprintf (asmfile, "%s \"(anon):%c", ASM_STABS_OP,
-                        DBX_REGPARM_STABS_LETTER);
+                        regparm_letter);
              }
 
            dbxout_type (TREE_TYPE (parms), 0, 0);