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Fixed loading of .data in linker scripts.

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This fixes a problem where the linker included some padding
bytes between the end of the .text section (_etext) and the
start of the .data section.

The C runtime copies from _etext, so all static initialised data
was corrupted.  This change forces the .data section to be written
at _etext to avoid this problem.
This commit is contained in:
Gareth McMullin 2011-11-12 13:22:25 +13:00
parent 6ce8d61097
commit 7546ad9736
3 changed files with 6 additions and 6 deletions
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4
lib/stm32/f1/libopencm3_stm32f1.ld
View File

@ -40,12 +40,12 @@ SECTIONS
. = ORIGIN(ram); . = ORIGIN(ram);
.data : { .data : AT(_etext) {
_data = .; _data = .;
*(.data*) /* Read-write initialized data */ *(.data*) /* Read-write initialized data */
. = ALIGN(4); . = ALIGN(4);
_edata = .; _edata = .;
} >ram AT >rom } >ram
.bss : { .bss : {
*(.bss*) /* Read-write zero initialized data */ *(.bss*) /* Read-write zero initialized data */

4
lib/stm32/f2/libopencm3_stm32f2.ld
View File

@ -40,12 +40,12 @@ SECTIONS
. = ORIGIN(ram); . = ORIGIN(ram);
.data : { .data : AT(_etext) {
_data = .; _data = .;
*(.data*) /* Read-write initialized data */ *(.data*) /* Read-write initialized data */
. = ALIGN(4); . = ALIGN(4);
_edata = .; _edata = .;
} >ram AT >rom } >ram
.bss : { .bss : {
*(.bss*) /* Read-write zero initialized data */ *(.bss*) /* Read-write zero initialized data */

4
lib/stm32/f4/libopencm3_stm32f4.ld
View File

@ -40,12 +40,12 @@ SECTIONS
. = ORIGIN(ram); . = ORIGIN(ram);
.data : { .data : AT(_etext) {
_data = .; _data = .;
*(.data*) /* Read-write initialized data */ *(.data*) /* Read-write initialized data */
. = ALIGN(4); . = ALIGN(4);
_edata = .; _edata = .;
} >ram AT >rom } >ram
.bss : { .bss : {
*(.bss*) /* Read-write zero initialized data */ *(.bss*) /* Read-write zero initialized data */