boards/mips Linker Scripts: The PIC32M* start-up code initializes .bss by writing 16 bytes at a time in a loop. The start (_sbss) alignment is only required to be 4 bytes since the write is done with 4 store instructions. In a previous change, the end address, _ebss, was aligned to 16 byte to prevent initializing past the end off the .bss region. However, that does not work unless the start address, _sbss, is also aligned to 16 bytes.

2019-09-16 08:14:32 -06:00 · 2019-09-16 08:14:32 -06:00 · 5995714cfd
commit 5995714cfd
parent ec4a7be5c2
22 changed files with 22 additions and 0 deletions
--- a/boards/mips/pic32mx/mirtoo/scripts/c32-debug.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/c32-debug.ld
@ -253,6 +253,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/mirtoo/scripts/c32-release.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/c32-release.ld
@ -255,6 +255,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/mirtoo/scripts/mips-elf-debug.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/mips-elf-debug.ld
@ -253,6 +253,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/mirtoo/scripts/mips-elf-release.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/mips-elf-release.ld
@ -255,6 +255,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/mirtoo/scripts/xc32-debug.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/xc32-debug.ld
@ -253,6 +253,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/mirtoo/scripts/xc32-release.ld
+++ b/boards/mips/pic32mx/mirtoo/scripts/xc32-release.ld
@ -255,6 +255,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/pic32mx-starterkit/scripts/c32-release.ld
+++ b/boards/mips/pic32mx/pic32mx-starterkit/scripts/c32-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/pic32mx-starterkit/scripts/mips-release.ld
+++ b/boards/mips/pic32mx/pic32mx-starterkit/scripts/mips-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/pic32mx7mmb/scripts/c32-release.ld
+++ b/boards/mips/pic32mx/pic32mx7mmb/scripts/c32-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/pic32mx7mmb/scripts/mips-release.ld
+++ b/boards/mips/pic32mx/pic32mx7mmb/scripts/mips-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/sure-pic32mx/scripts/c32-release.ld
+++ b/boards/mips/pic32mx/sure-pic32mx/scripts/c32-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/sure-pic32mx/scripts/mips-release.ld
+++ b/boards/mips/pic32mx/sure-pic32mx/scripts/mips-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/ubw32/scripts/c32-release.ld
+++ b/boards/mips/pic32mx/ubw32/scripts/c32-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mx/ubw32/scripts/mips-release.ld
+++ b/boards/mips/pic32mx/ubw32/scripts/mips-release.ld
@ -257,6 +257,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/c32-debug.ld
+++ b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/c32-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/mips-debug.ld
+++ b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/mips-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/pinguino-debug.ld
+++ b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/pinguino-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/flipnclick-pic32mz/scripts/xc32-debug.ld
+++ b/boards/mips/pic32mz/flipnclick-pic32mz/scripts/xc32-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/pic32mz-starterkit/scripts/c32-debug.ld
+++ b/boards/mips/pic32mz/pic32mz-starterkit/scripts/c32-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/pic32mz-starterkit/scripts/mips-debug.ld
+++ b/boards/mips/pic32mz/pic32mz-starterkit/scripts/mips-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/pic32mz-starterkit/scripts/pinguino-debug.ld
+++ b/boards/mips/pic32mz/pic32mz-starterkit/scripts/pinguino-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)
--- a/boards/mips/pic32mz/pic32mz-starterkit/scripts/xc32-debug.ld
+++ b/boards/mips/pic32mz/pic32mz-starterkit/scripts/xc32-debug.ld
@ -276,6 +276,7 @@ SECTIONS

    .sbss :
    {
+        . = ALIGN(16);
        _sbss = ABSOLUTE(.);
        *(.dynsbss)
        *(.sbss .sbss.* .gnu.linkonce.sb.*)