diff options
Diffstat (limited to 'gcc/config/h8300/h8300.c')
| -rw-r--r-- | gcc/config/h8300/h8300.c | 43 |
1 files changed, 42 insertions, 1 deletions
diff --git a/gcc/config/h8300/h8300.c b/gcc/config/h8300/h8300.c index 774863cbea7..0e44a3ab425 100644 --- a/gcc/config/h8300/h8300.c +++ b/gcc/config/h8300/h8300.c @@ -1,6 +1,6 @@ /* Subroutines for insn-output.c for Renesas H8/300. Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, - 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc. Contributed by Steve Chamberlain (sac@cygnus.com), Jim Wilson (wilson@cygnus.com), and Doug Evans (dje@cygnus.com). @@ -5860,6 +5860,38 @@ h8300_init_libfuncs (void) set_optab_libfunc (umod_optab, HImode, "__umodhi3"); } +/* Worker function for TARGET_FUNCTION_VALUE. + + On the H8 the return value is in R0/R1. */ + +static rtx +h8300_function_value (const_tree ret_type, + const_tree fn_decl_or_type ATTRIBUTE_UNUSED, + bool outgoing ATTRIBUTE_UNUSED) +{ + return gen_rtx_REG (TYPE_MODE (ret_type), R0_REG); +} + +/* Worker function for TARGET_LIBCALL_VALUE. + + On the H8 the return value is in R0/R1. */ + +static rtx +h8300_libcall_value (enum machine_mode mode, const_rtx fun ATTRIBUTE_UNUSED) +{ + return gen_rtx_REG (mode, R0_REG); +} + +/* Worker function for TARGET_FUNCTION_VALUE_REGNO_P. + + On the H8, R0 is the only register thus used. */ + +static bool +h8300_function_value_regno_p (const unsigned int regno) +{ + return (regno == R0_REG); +} + /* Worker function for TARGET_RETURN_IN_MEMORY. */ static bool @@ -5946,6 +5978,15 @@ h8300_trampoline_init (rtx m_tramp, tree fndecl, rtx cxt) #undef TARGET_INIT_LIBFUNCS #define TARGET_INIT_LIBFUNCS h8300_init_libfuncs +#undef TARGET_FUNCTION_VALUE +#define TARGET_FUNCTION_VALUE h8300_function_value + +#undef TARGET_LIBCALL_VALUE +#define TARGET_LIBCALL_VALUE h8300_libcall_value + +#undef TARGET_FUNCTION_VALUE_REGNO_P +#define TARGET_FUNCTION_VALUE_REGNO_P h8300_function_value_regno_p + #undef TARGET_RETURN_IN_MEMORY #define TARGET_RETURN_IN_MEMORY h8300_return_in_memory |