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-rw-r--r--patches/gcc-4.4.3/atmel/0003-Fix-handling-of-empty-.data-or-.bss-section.patch216
1 files changed, 0 insertions, 216 deletions
diff --git a/patches/gcc-4.4.3/atmel/0003-Fix-handling-of-empty-.data-or-.bss-section.patch b/patches/gcc-4.4.3/atmel/0003-Fix-handling-of-empty-.data-or-.bss-section.patch
deleted file mode 100644
index f4a2555..0000000
--- a/patches/gcc-4.4.3/atmel/0003-Fix-handling-of-empty-.data-or-.bss-section.patch
+++ /dev/null
@@ -1,216 +0,0 @@
-From 946c12c25ba51e81a019b52d9d74d170499a9586 Mon Sep 17 00:00:00 2001
-From: Stephan Linz <linz@li-pro.net>
-Date: Tue, 19 Apr 2011 22:52:41 +0200
-Subject: [PATCH 03/10] Fix handling of empty .data or .bss section
-
-Backend (avr part) lacks correct handling of empty .data or .bss
-section and shouldn't emit __do_copy_data or __do_clear_bss in
-such cases. This patch allows output these only if there is anything
-in the .data or .bss sections. Some code size could be saved by not
-linking in the initialization code from libgcc if one or both
-sections are empty.
-
-GCC bug #18145 report:
-http://gcc.gnu.org/bugzilla/show_bug.cgi?id=18145
-
-Original ATMEL patch from:
-http://distribute.atmel.no/tools/opensource/avr-gcc/gcc-4.4.3/41-gcc-4.4.3-bug-18145-v4.patch
-
-Signed-off-by: Stephan Linz <linz@li-pro.net>
----
- gcc/config/avr/avr-protos.h | 3 +
- gcc/config/avr/avr.c | 91 ++++++++++++++++++++++++++++++++++++++++---
- gcc/config/avr/avr.h | 14 +-----
- 3 files changed, 91 insertions(+), 17 deletions(-)
-
-diff --git a/gcc/config/avr/avr-protos.h b/gcc/config/avr/avr-protos.h
-index c300c89..c832e39 100644
---- a/gcc/config/avr/avr-protos.h
-+++ b/gcc/config/avr/avr-protos.h
-@@ -39,6 +39,8 @@ extern int avr_simple_epilogue (void);
- extern void gas_output_limited_string (FILE *file, const char *str);
- extern void gas_output_ascii (FILE *file, const char *str, size_t length);
- extern int avr_hard_regno_rename_ok (unsigned int, unsigned int);
-+extern void avr_asm_output_common (FILE *stream, const char *name, unsigned HOST_WIDE_INT size, unsigned HOST_WIDE_INT rounded);
-+extern void avr_asm_output_local (FILE *stream, const char *name, unsigned HOST_WIDE_INT size, unsigned HOST_WIDE_INT rounded);
-
- #ifdef TREE_CODE
- extern void asm_output_external (FILE *file, tree decl, char *name);
-@@ -126,6 +128,7 @@ extern RTX_CODE avr_normalize_condition (RTX_CODE condition);
- extern int compare_eq_p (rtx insn);
- extern void out_shift_with_cnt (const char *templ, rtx insn,
- rtx operands[], int *len, int t_len);
-+extern rtx avr_return_addr_rtx (int count, rtx tem);
- #endif /* RTX_CODE */
-
- #ifdef HAVE_MACHINE_MODES
-diff --git a/gcc/config/avr/avr.c b/gcc/config/avr/avr.c
-index 4a2588d..a8aff30 100644
---- a/gcc/config/avr/avr.c
-+++ b/gcc/config/avr/avr.c
-@@ -76,6 +76,12 @@ static rtx avr_function_value (const_tree, const_tree, bool);
- static void avr_insert_attributes (tree, tree *);
- static void avr_asm_init_sections (void);
- static unsigned int avr_section_type_flags (tree, const char *, int);
-+static void avr_asm_named_section (const char *name, unsigned int flags, tree decl);
-+/* Track if code will use .bss and/or .data */
-+static int avr_need_clear_bss_p = 0;
-+static int avr_need_copy_data_p = 0;
-+static void avr_output_data_section_asm_op (const void*);
-+static void avr_output_bss_section_asm_op (const void*);
-
- static void avr_reorg (void);
- static void avr_asm_out_ctor (rtx, int);
-@@ -5135,6 +5141,54 @@ avr_output_progmem_section_asm_op (const void *arg ATTRIBUTE_UNUSED)
- fprintf (asm_out_file, "\t.p2align 1\n");
- }
-
-+/* ASM_OUTPUT_COMMON */
-+/* Track need of __do_clear_bss */
-+
-+void
-+avr_asm_output_common (FILE *stream, const char *name,
-+ unsigned HOST_WIDE_INT size,
-+ unsigned HOST_WIDE_INT rounded ATTRIBUTE_UNUSED)
-+{
-+ avr_need_clear_bss_p = 1;
-+ fputs ("\t.comm ", stream);
-+ assemble_name (stream, name);
-+ fprintf (stream, ",%lu,1\n", (unsigned long) size);
-+}
-+
-+/* ASM_OUTPUT_LOCAL */
-+/* Track need of __do_clear_bss */
-+
-+void
-+avr_asm_output_local (FILE *stream, const char *name,
-+ unsigned HOST_WIDE_INT size,
-+ unsigned HOST_WIDE_INT rounded ATTRIBUTE_UNUSED)
-+{
-+ avr_need_clear_bss_p = 1;
-+ fputs ("\t.lcomm ", stream);
-+ assemble_name (stream, name);
-+ fprintf (stream, ",%d\n", (int) size);
-+}
-+
-+/* Unnamed section callback to track need of __do_copy_data */
-+
-+static void
-+avr_output_data_section_asm_op (const void *data)
-+{
-+ avr_need_copy_data_p = 1;
-+ /* Dispatch to default */
-+ output_section_asm_op (data);
-+}
-+
-+/* Unnamed section callback to track need of __do_clear_bss */
-+
-+static void
-+avr_output_bss_section_asm_op (const void *data)
-+{
-+ avr_need_clear_bss_p = 1;
-+ /* Dispatch to default */
-+ output_section_asm_op (data);
-+}
-+
- /* Implement TARGET_ASM_INIT_SECTIONS. */
-
- static void
-@@ -5144,6 +5198,27 @@ avr_asm_init_sections (void)
- avr_output_progmem_section_asm_op,
- NULL);
- readonly_data_section = data_section;
-+
-+ data_section->unnamed.callback = avr_output_data_section_asm_op;
-+ bss_section->unnamed.callback = avr_output_bss_section_asm_op;
-+}
-+
-+/* TARGET_ASM_NAMED_SECTION */
-+/* Track need of __do_clear_bss, __do_copy_data for named sections */
-+
-+static void
-+avr_asm_named_section (const char *name, unsigned int flags, tree decl)
-+{
-+ if (!avr_need_copy_data_p)
-+ avr_need_copy_data_p =
-+ (0 == strncmp (name, ".data", 5)
-+ || 0 == strncmp (name, ".rodata", 7)
-+ || 0 == strncmp (name, ".gnu.linkonce.", 14));
-+
-+ if (!avr_need_clear_bss_p)
-+ avr_need_clear_bss_p = (0 == strncmp (name, ".bss", 4));
-+
-+ default_elf_asm_named_section (name, flags, decl);
- }
-
- static unsigned int
-@@ -5182,12 +5257,6 @@ avr_file_start (void)
-
- fputs ("__tmp_reg__ = 0\n"
- "__zero_reg__ = 1\n", asm_out_file);
--
-- /* FIXME: output these only if there is anything in the .data / .bss
-- sections - some code size could be saved by not linking in the
-- initialization code from libgcc if one or both sections are empty. */
-- fputs ("\t.global __do_copy_data\n", asm_out_file);
-- fputs ("\t.global __do_clear_bss\n", asm_out_file);
- }
-
- /* Outputs to the stdio stream FILE some
-@@ -5196,6 +5265,16 @@ avr_file_start (void)
- static void
- avr_file_end (void)
- {
-+ /* Output these only if there is anything in the
-+ .data* / .rodata* / .gnu.linkonce.* resp. .bss*
-+ input section(s) - some code size can be saved by not
-+ linking in the initialization code from libgcc if resp.
-+ sections are empty. */
-+ if (avr_need_copy_data_p)
-+ fputs (".global __do_copy_data\n", asm_out_file);
-+
-+ if (avr_need_clear_bss_p)
-+ fputs (".global __do_clear_bss\n", asm_out_file);
- }
-
- /* Choose the order in which to allocate hard registers for
-diff --git a/gcc/config/avr/avr.h b/gcc/config/avr/avr.h
-index 54c607a..c0efa57 100644
---- a/gcc/config/avr/avr.h
-+++ b/gcc/config/avr/avr.h
-@@ -544,7 +544,7 @@ do { \
- #define ASM_APP_OFF "/* #NOAPP */\n"
-
- /* Switch into a generic section. */
--#define TARGET_ASM_NAMED_SECTION default_elf_asm_named_section
-+#define TARGET_ASM_NAMED_SECTION avr_asm_named_section
- #define TARGET_ASM_INIT_SECTIONS avr_asm_init_sections
-
- #define ASM_OUTPUT_ASCII(FILE, P, SIZE) gas_output_ascii (FILE,P,SIZE)
-@@ -552,21 +552,13 @@ do { \
- #define IS_ASM_LOGICAL_LINE_SEPARATOR(C, STR) ((C) == '\n' || ((C) == '$'))
-
- #define ASM_OUTPUT_COMMON(STREAM, NAME, SIZE, ROUNDED) \
--do { \
-- fputs ("\t.comm ", (STREAM)); \
-- assemble_name ((STREAM), (NAME)); \
-- fprintf ((STREAM), ",%lu,1\n", (unsigned long)(SIZE)); \
--} while (0)
-+ avr_asm_output_common (STREAM, NAME, SIZE, ROUNDED)
-
- #define ASM_OUTPUT_BSS(FILE, DECL, NAME, SIZE, ROUNDED) \
- asm_output_bss ((FILE), (DECL), (NAME), (SIZE), (ROUNDED))
-
- #define ASM_OUTPUT_LOCAL(STREAM, NAME, SIZE, ROUNDED) \
--do { \
-- fputs ("\t.lcomm ", (STREAM)); \
-- assemble_name ((STREAM), (NAME)); \
-- fprintf ((STREAM), ",%d\n", (int)(SIZE)); \
--} while (0)
-+ avr_asm_output_local (STREAM, NAME, SIZE, ROUNDED)
-
- #undef TYPE_ASM_OP
- #undef SIZE_ASM_OP
---
-1.6.0.4
-
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