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| author | Joakim Tjernlund <Joakim.Tjernlund@transmode.se> | 2010-12-06 18:35:37 +0100 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2011-04-11 21:38:47 +0200 |
| commit | 39768f7715ed637ef02f49fc7de664cc1aaf14b3 (patch) | |
| tree | a5cc618786f64865df878d1d025de7672b5036da /arch/powerpc/cpu/mpc86xx/start.S | |
| parent | 33ee4c92339ee386662c0ee2d221098c5cc8b07e (diff) | |
| download | talos-obmc-uboot-39768f7715ed637ef02f49fc7de664cc1aaf14b3.tar.gz talos-obmc-uboot-39768f7715ed637ef02f49fc7de664cc1aaf14b3.zip | |
PowerPC: Add support for -msingle-pic-base
-msingle-pic-base is a new gcc option for ppc and
it reduces the size of my u-boot with 6-8 KB.
While at it, add -fno-jump-tables too to save a
few more bytes.
-msingle-pic-base will be in gcc 4.6, however
backported patches are available at
http://bugs.gentoo.org/show_bug.cgi?id=347281
Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Diffstat (limited to 'arch/powerpc/cpu/mpc86xx/start.S')
| -rw-r--r-- | arch/powerpc/cpu/mpc86xx/start.S | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/powerpc/cpu/mpc86xx/start.S b/arch/powerpc/cpu/mpc86xx/start.S index 3e3c21eefd..2ec7fd46b0 100644 --- a/arch/powerpc/cpu/mpc86xx/start.S +++ b/arch/powerpc/cpu/mpc86xx/start.S @@ -255,7 +255,11 @@ addr_trans_enabled: stwu r0, -4(r1) /* stack backtraces terminate cleanly */ GET_GOT /* initialize GOT access */ - +#if defined(__pic__) && __pic__ == 1 + /* Needed for upcoming -msingle-pic-base */ + bl _GLOBAL_OFFSET_TABLE_@local-4 + mflr r30 +#endif /* run low-level CPU init code (from Flash) */ bl cpu_init_f sync @@ -620,6 +624,11 @@ relocate_code: mr r10, r5 /* Save copy of Destination Address */ GET_GOT +#if defined(__pic__) && __pic__ == 1 + /* Needed for upcoming -msingle-pic-base */ + bl _GLOBAL_OFFSET_TABLE_@local-4 + mflr r30 +#endif mr r3, r5 /* Destination Address */ lis r4, CONFIG_SYS_MONITOR_BASE@h /* Source Address */ ori r4, r4, CONFIG_SYS_MONITOR_BASE@l |
