From 28f851f93a24640360f41dc544d346d33428336c Mon Sep 17 00:00:00 2001 From: Jim Kingdon Date: Sat, 25 Dec 1993 19:50:45 +0000 Subject: * stabsread.c (define_symbol): Only combine a p/r pair into a LOC_REGPARM if REG_STRUCT_HAS_ADDR. --- gdb/stabsread.c | 25 ++++++++++++++++++------- 1 file changed, 18 insertions(+), 7 deletions(-) (limited to 'gdb/stabsread.c') diff --git a/gdb/stabsread.c b/gdb/stabsread.c index 23df33391c9..4b97a608fe3 100644 --- a/gdb/stabsread.c +++ b/gdb/stabsread.c @@ -450,6 +450,10 @@ read_type_number (pp, typenums) static char *type_synonym_name; +#if !defined (REG_STRUCT_HAS_ADDR) +#define REG_STRUCT_HAS_ADDR(gcc_p) 0 +#endif + /* ARGSUSED */ struct symbol * define_symbol (valu, string, desc, type, objfile) @@ -925,16 +929,27 @@ define_symbol (valu, string, desc, type, objfile) SYMBOL_VALUE (sym) = SP_REGNUM; /* Known safe, though useless */ } SYMBOL_NAMESPACE (sym) = VAR_NAMESPACE; - if (within_function) + if (within_function + && REG_STRUCT_HAS_ADDR (processing_gcc_compilation) + && (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT + || TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION)) { /* Sun cc uses a pair of symbols, one 'p' and one 'r' with the same name to represent an argument passed in a register. GCC uses 'P' for the same case. So if we find such a symbol pair we combine it into one 'P' symbol. + + But we only do this in the REG_STRUCT_HAS_ADDR case, so that + we can still get information about what is going on with the + stack (VAX for computing args_printed, possible future changes + to use stack slots instead of saved registers in backtraces, + etc.). + Note that this code illegally combines - main(argc) int argc; { register int argc = 1; } + main(argc) struct foo argc; { register struct foo argc; } but this case is considered pathological and causes a warning from a decent compiler. */ + if (local_symbols && local_symbols->nsyms > 0) { @@ -1123,13 +1138,9 @@ define_symbol (valu, string, desc, type, objfile) If REG_STRUCT_HAS_ADDR yields non-zero we have to convert LOC_REGPARM to LOC_REGPARM_ADDR for structures and unions. */ -#if !defined (REG_STRUCT_HAS_ADDR) -#define REG_STRUCT_HAS_ADDR(gcc_p) 0 -#endif - if (SYMBOL_CLASS (sym) == LOC_REGPARM && REG_STRUCT_HAS_ADDR (processing_gcc_compilation) - && ( (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT) + && ((TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_STRUCT) || (TYPE_CODE (SYMBOL_TYPE (sym)) == TYPE_CODE_UNION))) SYMBOL_CLASS (sym) = LOC_REGPARM_ADDR; -- cgit v1.2.1