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| author | wdenk <wdenk> | 2004-04-12 16:12:49 +0000 |
|---|---|---|
| committer | wdenk <wdenk> | 2004-04-12 16:12:49 +0000 |
| commit | d716b126718d874f52ffb694e6c22b7235cec483 (patch) | |
| tree | 621a24955203ad5c221a3049fee60048e74b556e /examples | |
| parent | 56b86bf0cd6ce45d337154c133ab361120ee5569 (diff) | |
| download | u-boot-d716b126718d874f52ffb694e6c22b7235cec483.tar.gz u-boot-d716b126718d874f52ffb694e6c22b7235cec483.tar.bz2 u-boot-d716b126718d874f52ffb694e6c22b7235cec483.zip | |
Add startup code to clear the BSS of standalone applications
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/mips.lds | 3 | ||||
| -rw-r--r-- | examples/nios.lds | 1 | ||||
| -rw-r--r-- | examples/stubs.c | 9 |
3 files changed, 13 insertions, 0 deletions
diff --git a/examples/mips.lds b/examples/mips.lds index 8ed01c4458..9d9849bf5c 100644 --- a/examples/mips.lds +++ b/examples/mips.lds @@ -51,6 +51,9 @@ SECTIONS .sdata : { *(.sdata) } . = ALIGN(4); + __bss_start = .; .sbss : { *(.sbss) } .bss : { *(.bss) } + + _end = .; } diff --git a/examples/nios.lds b/examples/nios.lds index 527eb3ad45..dd5bfad7b1 100644 --- a/examples/nios.lds +++ b/examples/nios.lds @@ -57,4 +57,5 @@ SECTIONS } . = ALIGN(4); __bss_end = .; + _end = .; } diff --git a/examples/stubs.c b/examples/stubs.c index a26337a926..a897d0d213 100644 --- a/examples/stubs.c +++ b/examples/stubs.c @@ -110,8 +110,17 @@ static void __attribute__((unused)) dummy(void) #include <_exports.h> } +extern unsigned long __bss_start, _end; + void app_startup(char **argv) { + unsigned long * cp = &__bss_start; + + /* Zero out BSS */ + while (cp < &_end) { + *cp++ = 0; + } + #if defined(CONFIG_I386) /* x86 does not have a dedicated register for passing global_data */ global_data = (gd_t *)argv[-1]; |