diff options
Diffstat (limited to 'gcc/config/convex/convex.c')
| -rw-r--r-- | gcc/config/convex/convex.c | 42 |
1 files changed, 42 insertions, 0 deletions
diff --git a/gcc/config/convex/convex.c b/gcc/config/convex/convex.c index eecf2bd..6f563e2 100644 --- a/gcc/config/convex/convex.c +++ b/gcc/config/convex/convex.c @@ -64,11 +64,53 @@ static int frame_argblock_size; static rtx convert_arg_pushes (); #endif static void expand_movstr_call PARAMS ((rtx *)); +static void convex_output_function_prologue PARAMS ((FILE *, HOST_WIDE_INT)); +static void convex_output_function_epilogue PARAMS ((FILE *, HOST_WIDE_INT)); /* Initialize the GCC target structure. */ +#undef TARGET_ASM_FUNCTION_PROLOGUE +#define TARGET_ASM_FUNCTION_PROLOGUE convex_output_function_prologue +#undef TARGET_ASM_FUNCTION_EPILOGUE +#define TARGET_ASM_FUNCTION_EPILOGUE convex_output_function_epilogue struct gcc_target target = TARGET_INITIALIZER; +/* Generate the assembly code for function entry. FILE is a stdio + stream to output the code to. SIZE is an int: how many units of + temporary storage to allocate. + + Refer to the array `regs_ever_live' to determine which registers to + save; `regs_ever_live[I]' is nonzero if register number I is ever + used in the function. This function is responsible for knowing + which registers should not be saved even if used. */ + +static void +convex_output_function_prologue (file, size) + FILE *file; + HOST_WIDE_INT size; +{ + size = ((size) + 7) & -8; + if (size) + fprintf (file, "\tsub.w #%d,sp\n", size); +} + +/* This function generates the assembly code for function exit. + Args are as for output_function_prologue (). + + The function epilogue should not depend on the current stack + pointer! It should use the frame pointer only. This is mandatory + because of alloca; we also take advantage of it to omit stack + adjustments before returning. */ + +static void +convex_output_function_epilogue (file, size) + FILE *file; + HOST_WIDE_INT size ATTRIBUTE_UNUSED; +{ + /* Follow function with a zero to stop c34 icache prefetching. */ + fprintf (file, "\tds.h 0\n"); +} + /* Here from OVERRIDE_OPTIONS at startup. Initialize constant tables. */ void |