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This patch modifies the AVR linker script templates to use __<name>_REGION_LENGTH__ symbols, if provided, for setting memory region lengths, defaulting to the current constant values otherwise.

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ld	* scripttempl/avr.sc: Add new user_signatures region. Define and Use
	symbols for all region lengths.
	* scripttempl/avrtiny.sc: Define and use symbols for all region lengths.

testsuite * ld-avr/region_overflow.d: New test.
	* ld-avr/region_overflow.s: Likewise.
This commit is contained in:
Senthil Kumar Selvaraj
2015-02-24 11:26:28 +00:00
committed by Nick Clifton
parent 0821d5b14e
commit cb0728165e
6 changed files with 49 additions and 11 deletions
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21
ld/scripttempl/avr.sc
View File

@@ -14,14 +14,23 @@ cat <<EOF
OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})
__TEXT_REGION_LENGTH__ = DEFINED(__TEXT_REGION_LENGTH__) ? __TEXT_REGION_LENGTH__ : $TEXT_LENGTH;
__DATA_REGION_LENGTH__ = DEFINED(__DATA_REGION_LENGTH__) ? __DATA_REGION_LENGTH__ : $DATA_LENGTH;
__EEPROM_REGION_LENGTH__ = DEFINED(__EEPROM_REGION_LENGTH__) ? __EEPROM_REGION_LENGTH__ : 64K;
__FUSE_REGION_LENGTH__ = DEFINED(__FUSE_REGION_LENGTH__) ? __FUSE_REGION_LENGTH__ : 1K;
__LOCK_REGION_LENGTH__ = DEFINED(__LOCK_REGION_LENGTH__) ? __LOCK_REGION_LENGTH__ : 1K;
__SIGNATURE_REGION_LENGTH__ = DEFINED(__SIGNATURE_REGION_LENGTH__) ? __SIGNATURE_REGION_LENGTH__ : 1K;
__USER_SIGNATURE_REGION_LENGTH__ = DEFINED(__USER_SIGNATURE_REGION_LENGTH__) ? __USER_SIGNATURE_REGION_LENGTH__ : 1K;
MEMORY
{
text (rx) : ORIGIN = 0, LENGTH = $TEXT_LENGTH
data (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = $DATA_LENGTH
eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = 64K
fuse (rw!x) : ORIGIN = 0x820000, LENGTH = 1K
lock (rw!x) : ORIGIN = 0x830000, LENGTH = 1K
signature (rw!x) : ORIGIN = 0x840000, LENGTH = 1K
text (rx) : ORIGIN = 0, LENGTH = __TEXT_REGION_LENGTH__
data (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = __DATA_REGION_LENGTH__
eeprom (rw!x) : ORIGIN = 0x810000, LENGTH = __EEPROM_REGION_LENGTH__
fuse (rw!x) : ORIGIN = 0x820000, LENGTH = __FUSE_REGION_LENGTH__
lock (rw!x) : ORIGIN = 0x830000, LENGTH = __LOCK_REGION_LENGTH__
signature (rw!x) : ORIGIN = 0x840000, LENGTH = __SIGNATURE_REGION_LENGTH__
user_signatures (rw!x) : ORIGIN = 0x850000, LENGTH = __USER_SIGNATURE_REGION_LENGTH__
}
SECTIONS

16
ld/scripttempl/avrtiny.sc
View File

@@ -14,17 +14,23 @@ cat <<EOF
OUTPUT_FORMAT("${OUTPUT_FORMAT}","${OUTPUT_FORMAT}","${OUTPUT_FORMAT}")
OUTPUT_ARCH(${ARCH})
__TEXT_REGION_LENGTH__ = DEFINED(__TEXT_REGION_LENGTH__) ? __TEXT_REGION_LENGTH__ : $TEXT_LENGTH;
__DATA_REGION_LENGTH__ = DEFINED(__DATA_REGION_LENGTH__) ? __DATA_REGION_LENGTH__ : $DATA_LENGTH;
__FUSE_REGION_LENGTH__ = DEFINED(__FUSE_REGION_LENGTH__) ? __FUSE_REGION_LENGTH__ : 2;
__LOCK_REGION_LENGTH__ = DEFINED(__LOCK_REGION_LENGTH__) ? __LOCK_REGION_LENGTH__ : 2;
__SIGNATURE_REGION_LENGTH__ = DEFINED(__SIGNATURE_REGION_LENGTH__) ? __SIGNATURE_REGION_LENGTH__ : 4;
MEMORY
{
text (rx) : ORIGIN = $TEXT_ORIGIN, LENGTH = $TEXT_LENGTH
data (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = $DATA_LENGTH
text (rx) : ORIGIN = $TEXT_ORIGIN, LENGTH = __TEXT_REGION_LENGTH__
data (rw!x) : ORIGIN = $DATA_ORIGIN, LENGTH = __DATA_REGION_LENGTH__
/* Provide offsets for config, lock and signature to match
production file format. Ignore offsets in datasheet. */
config (rw!x) : ORIGIN = 0x820000, LENGTH = 2
lock (rw!x) : ORIGIN = 0x830000, LENGTH = 2
signature (rw!x) : ORIGIN = 0x840000, LENGTH = 4
config (rw!x) : ORIGIN = 0x820000, LENGTH = __FUSE_REGION_LENGTH__
lock (rw!x) : ORIGIN = 0x830000, LENGTH = __LOCK_REGION_LENGTH__
signature (rw!x) : ORIGIN = 0x840000, LENGTH = __SIGNATURE_REGION_LENGTH__
}
SECTIONS