diff options
Diffstat (limited to 'gcc/config/avr/avr.c')
| -rw-r--r-- | gcc/config/avr/avr.c | 35 |
1 files changed, 29 insertions, 6 deletions
diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c index efd9f72..5e665e5 100644 --- a/gcc/config/avr/avr.c +++ b/gcc/config/avr/avr.c @@ -108,6 +108,7 @@ static void avr_function_arg_advance (cumulative_args_t, enum machine_mode, const_tree, bool); static bool avr_function_ok_for_sibcall (tree, tree); static void avr_asm_named_section (const char *name, unsigned int flags, tree decl); +static void avr_encode_section_info (tree, rtx, int); /* Allocate registers from r25 to r8 for parameters for function calls. */ #define FIRST_CUM_REG 26 @@ -197,6 +198,8 @@ static const struct attribute_spec avr_attribute_table[] = #undef TARGET_ASM_INIT_SECTIONS #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections +#undef TARGET_ENCODE_SECTION_INFO +#define TARGET_ENCODE_SECTION_INFO avr_encode_section_info #undef TARGET_REGISTER_MOVE_COST #define TARGET_REGISTER_MOVE_COST avr_register_move_cost @@ -4941,12 +4944,7 @@ avr_handle_progmem_attribute (tree *node, tree name, } else if (TREE_STATIC (*node) || DECL_EXTERNAL (*node)) { - if (DECL_INITIAL (*node) == NULL_TREE && !DECL_EXTERNAL (*node)) - { - warning (0, "only initialized variables can be placed into " - "program memory area"); - *no_add_attrs = true; - } + *no_add_attrs = false; } else { @@ -5153,10 +5151,35 @@ avr_section_type_flags (tree decl, const char *name, int reloc) ".noinit section"); } + if (0 == strncmp (name, ".progmem.data", strlen (".progmem.data"))) + flags &= ~SECTION_WRITE; + return flags; } +/* Implement `TARGET_ENCODE_SECTION_INFO'. */ + +static void +avr_encode_section_info (tree decl, rtx rtl ATTRIBUTE_UNUSED, + int new_decl_p) +{ + /* In avr_handle_progmem_attribute, DECL_INITIAL is not yet + readily available, see PR34734. So we postpone the warning + about uninitialized data in program memory section until here. */ + + if (new_decl_p + && decl && DECL_P (decl) + && NULL_TREE == DECL_INITIAL (decl) + && avr_progmem_p (decl, DECL_ATTRIBUTES (decl))) + { + warning (OPT_Wuninitialized, + "uninitialized variable %q+D put into " + "program memory area", decl); + } +} + + /* Implement `TARGET_ASM_FILE_START'. */ /* Outputs some appropriate text to go at the start of an assembler file. */ |