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While trying to compile gcc on a 64 bit machine, gcc failed building
in the intermediate stage.
Reason is that some functions were not defined in nios2-protos.h.
The patch below fixes this (and a whitespace issue);
actually the root cause is probably nios2_legitimize_address,
This one returns an rtx which is a pointer. On a 64 bit machine a
pointer is 64 bit. If the function is not declared C states it
defaults to int and hence becomes a 32 bit value.
This results in a bad address being given to the caller.
Some other functions also had missing prototypes. I've added them too.
Have fun, Frans.
Index: gcc-4.1.2/gcc/config/nios2/nios2-protos.h
===================================================================
--- gcc-4.1.2.orig/gcc/config/nios2/nios2-protos.h 2011-03-01 11:22:46.872378077 +0100
+++ gcc-4.1.2/gcc/config/nios2/nios2-protos.h 2011-03-01 11:22:52.682377525 +0100
@@ -1,6 +1,6 @@
/* NOT ASSIGNED TO FSF. COPYRIGHT ALTERA. */
/* Subroutines for assembler code output for Altera NIOS 2G NIOS2 version.
- Copyright (C) 2003 Altera
+ Copyright (C) 2003 Altera
Contributed by Jonah Graham (jgraham@altera.com).
This file is part of GNU CC.
@@ -39,6 +39,8 @@
extern int nios2_legitimate_constant (rtx);
extern void nios2_print_operand (FILE *, rtx, int);
extern void nios2_print_operand_address (FILE *, rtx);
+extern rtx nios2_legitimize_address (rtx, rtx, enum machine_mode);
+extern bool nios2_legitimate_pic_operand_p (rtx);
extern int nios2_emit_move_sequence (rtx *, enum machine_mode);
extern int nios2_emit_expensive_div (rtx *, enum machine_mode);
@@ -68,14 +70,16 @@
# if defined TREE_CODE
extern rtx function_arg (const CUMULATIVE_ARGS *, enum machine_mode, tree, int);
extern bool nios2_must_pass_in_stack (enum machine_mode, tree);
-extern int function_arg_partial_nregs (const CUMULATIVE_ARGS *,
+extern int function_arg_partial_nregs (const CUMULATIVE_ARGS *,
enum machine_mode, tree, int);
-extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, tree,
+extern void function_arg_advance (CUMULATIVE_ARGS *, enum machine_mode, tree,
int);
extern int nios2_function_arg_padding (enum machine_mode, tree);
+extern int nios2_function_arg_padding_upward (enum machine_mode, tree);
extern int nios2_block_reg_padding (enum machine_mode, tree, int);
+extern int nios2_block_reg_padding_upward (enum machine_mode, tree, int);
extern void init_cumulative_args (CUMULATIVE_ARGS *, tree, rtx, tree, int);
-extern void nios2_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
+extern void nios2_setup_incoming_varargs (CUMULATIVE_ARGS *, enum machine_mode,
tree, int *, int);
# endif /* TREE_CODE */
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