diff options
Diffstat (limited to 'gcc/target.h')
| -rw-r--r-- | gcc/target.h | 48 |
1 files changed, 46 insertions, 2 deletions
diff --git a/gcc/target.h b/gcc/target.h index 707fbef6ad6..12fd9b085a0 100644 --- a/gcc/target.h +++ b/gcc/target.h @@ -1,5 +1,6 @@ /* Data structure definitions for a generic GCC target. - Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 + Copyright (C) 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, + 2011 Free Software Foundation, Inc. This program is free software; you can redistribute it and/or modify it @@ -49,9 +50,24 @@ #ifndef GCC_TARGET_H #define GCC_TARGET_H -#include "tm.h" #include "insn-modes.h" +#ifdef ENABLE_CHECKING + +typedef struct { void *magic; void *p; } cumulative_args_t; + +#else /* !ENABLE_CHECKING */ + +/* When using a GCC build compiler, we could use + __attribute__((transparent_union)) to get cumulative_args_t function + arguments passed like scalars where the ABI would mandate a less + efficient way of argument passing otherwise. However, that would come + at the cost of less type-safe !ENABLE_CHECKING compilation. */ + +typedef union { void *p; } cumulative_args_t; + +#endif /* !ENABLE_CHECKING */ + /* Types used by the record_gcc_switches() target function. */ typedef enum { @@ -141,4 +157,32 @@ enum vect_cost_for_stmt extern struct gcc_target targetm; +#ifdef GCC_TM_H + +#ifndef CUMULATIVE_ARGS_MAGIC +#define CUMULATIVE_ARGS_MAGIC ((void *) &targetm.calls) +#endif + +static inline CUMULATIVE_ARGS * +get_cumulative_args (cumulative_args_t arg) +{ +#ifdef ENABLE_CHECKING + gcc_assert (arg.magic == CUMULATIVE_ARGS_MAGIC); +#endif /* ENABLE_CHECKING */ + return (CUMULATIVE_ARGS *) arg.p; +} + +static inline cumulative_args_t +pack_cumulative_args (CUMULATIVE_ARGS *arg) +{ + cumulative_args_t ret; + +#ifdef ENABLE_CHECKING + ret.magic = CUMULATIVE_ARGS_MAGIC; +#endif /* ENABLE_CHECKING */ + ret.p = (void *) arg; + return ret; +} +#endif /* GCC_TM_H */ + #endif /* GCC_TARGET_H */ |