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| author | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-04-11 05:43:21 +0000 |
|---|---|---|
| committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2013-04-13 22:37:20 +0200 |
| commit | f84a7b8f54db51172a50926be8b2224413977f75 (patch) | |
| tree | efa2e78aa939e07934c048a6cd21a568c003c8e5 /arch | |
| parent | 4411b2aea7aa06d7b4aa5f4a7b36957af9b95e08 (diff) | |
| download | u-boot-imx-f84a7b8f54db51172a50926be8b2224413977f75.zip u-boot-imx-f84a7b8f54db51172a50926be8b2224413977f75.tar.gz u-boot-imx-f84a7b8f54db51172a50926be8b2224413977f75.tar.bz2 | |
ARM: Fix __bss_start and __bss_end in linker scripts
Commit 3ebd1cbc introduced compiler-generated __bss_start
and __bss_end__ and commit c23561e7 rewrote all __bss_end__
as __bss_end. Their merge caused silent and harmless but
potentially bug-inducing clashes between compiler- and linker-
generated __bss_end symbols.
Make __bss_end and __bss_start compiler-only, and create
__bss_base and __bss_limit for linker-only use.
Signed-off-by: Albert ARIBAUD <albert.u.boot@aribaud.net>
Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/cpu/ixp/u-boot.lds | 14 | ||||
| -rw-r--r-- | arch/arm/cpu/u-boot.lds | 14 |
2 files changed, 20 insertions, 8 deletions
diff --git a/arch/arm/cpu/ixp/u-boot.lds b/arch/arm/cpu/ixp/u-boot.lds index 388a67f..553589c 100644 --- a/arch/arm/cpu/ixp/u-boot.lds +++ b/arch/arm/cpu/ixp/u-boot.lds @@ -69,17 +69,23 @@ SECTIONS _end = .; +/* + * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c + * __bss_base and __bss_limit are for linker only (overlay ordering) + */ + .bss_start __rel_dyn_start (OVERLAY) : { KEEP(*(.__bss_start)); + __bss_base = .; } - .bss __bss_start (OVERLAY) : { + .bss __bss_base (OVERLAY) : { *(.bss*) . = ALIGN(4); - __bss_end = .; + __bss_limit = .; } - .bss_end __bss_end (OVERLAY) : { - KEEP(*(__bss_end)); + .bss_end __bss_limit (OVERLAY) : { + KEEP(*(.__bss_end)); } /DISCARD/ : { *(.dynstr*) } diff --git a/arch/arm/cpu/u-boot.lds b/arch/arm/cpu/u-boot.lds index 3a1083d..d5e42d3a 100644 --- a/arch/arm/cpu/u-boot.lds +++ b/arch/arm/cpu/u-boot.lds @@ -81,18 +81,24 @@ SECTIONS *(.mmutable) } +/* + * Compiler-generated __bss_start and __bss_end, see arch/arm/lib/bss.c + * __bss_base and __bss_limit are for linker only (overlay ordering) + */ + .bss_start __rel_dyn_start (OVERLAY) : { KEEP(*(.__bss_start)); + __bss_base = .; } - .bss __bss_start (OVERLAY) : { + .bss __bss_base (OVERLAY) : { *(.bss*) . = ALIGN(4); - __bss_end = .; + __bss_limit = .; } - .bss_end __bss_end (OVERLAY) : { - KEEP(*(__bss_end)); + .bss_end __bss_limit (OVERLAY) : { + KEEP(*(.__bss_end)); } /DISCARD/ : { *(.dynstr*) } |