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authorWolfgang Denk <wd@denx.de>2008-02-14 22:43:22 +0100
committerWolfgang Denk <wd@denx.de>2008-02-14 22:43:22 +0100
commite7670f6c1e52ae6d2a43ff75a8bcfa7a5c86e47b (patch)
treec105ae64bb203f93e670ef11b3256a4a3086c0ad /cpu/mpc85xx
parent3c234efa693bc59906c2be55c7918ecbb55392ea (diff)
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PPC: Use r2 instead of r29 as global data pointer
R29 was an unlucky choice as with recent toolchains (gcc-4.2.x) gcc will refuse to use load/store multiple insns; instead, it issues a list of simple load/store instructions upon function entry and exit, resulting in bigger code size, which in turn makes the build for a few boards fail. Use r2 instead. Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'cpu/mpc85xx')
-rw-r--r--cpu/mpc85xx/config.mk3
1 files changed, 2 insertions, 1 deletions
diff --git a/cpu/mpc85xx/config.mk b/cpu/mpc85xx/config.mk
index 6121074..f6df702 100644
--- a/cpu/mpc85xx/config.mk
+++ b/cpu/mpc85xx/config.mk
@@ -23,4 +23,5 @@
PLATFORM_RELFLAGS += -fPIC -ffixed-r14 -meabi
-PLATFORM_CPPFLAGS += -DCONFIG_MPC85xx -DCONFIG_E500 -ffixed-r2 -ffixed-r29 -Wa,-me500 -msoft-float -mno-string
+PLATFORM_CPPFLAGS += -DCONFIG_MPC85xx -DCONFIG_E500 -ffixed-r2 \
+ -Wa,-me500 -msoft-float -mno-string