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dm: mips: Import libgcc components from Linux

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Import ashldr3, ashrdi3 and lshrdi3 to squash possible libgcc fp mismatch,
resulting in the following warning:

mips-linux-gnu-ld: Warning: /usr/lib/gcc/mips-linux-gnu/4.7/libgcc.a(_lshrdi3.o) uses hard float, u-boot uses soft float
mips-linux-gnu-ld: Warning: /usr/lib/gcc/mips-linux-gnu/4.7/libgcc.a(_ashldi3.o) uses hard float, u-boot uses soft float

Imported from Linux (linux-next 20120723) as of commit:

commit 72fbfb260197a52c2bc2583f3e8f15d261d0f924
Author: Ralf Baechle <ralf@linux-mips.org>
Date:   Wed Jun 7 13:25:37 2006 +0100

    [MIPS] Fix optimization for size build.

    It took a while longer than on other architectures but gcc has finally
    started to strike us as well ...

    This also fixes the damage by 6edfba1b33c701108717f4e036320fc39abe1912.

    Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Daniel Schwierzeck <daniel.schwierzeck@googlemail.com>
[<daniel.schwierzeck@gmail.com>: removed USE_PRIVATE_LIBGCC = yes]
Signed-off-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This commit is contained in:
Marek Vasut
2012-08-12 16:53:35 +02:00
committed by Daniel Schwierzeck
parent 9a16f310c0
commit d2aa5dca74
5 changed files with 122 additions and 0 deletions
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20
arch/mips/lib/Makefile
View File

@@ -25,6 +25,13 @@ include $(TOPDIR)/config.mk
LIB = $(obj)lib$(ARCH).o
## Build a couple of necessary functions into a private libgcc
LIBGCC = $(obj)libgcc.o
GLSOBJS += ashldi3.o
GLSOBJS += ashrdi3.o
GLSOBJS += lshrdi3.o
LGOBJS := $(addprefix $(obj),$(GLSOBJS))
SOBJS-y +=
COBJS-y += board.o
@@ -37,9 +44,22 @@ endif
SRCS := $(SOBJS-y:.o=.S) $(COBJS-y:.o=.c)
OBJS := $(addprefix $(obj),$(SOBJS-y) $(COBJS-y))
# Always build libmips.o
TARGETS := $(LIB)
# Build private libgcc only when asked for
ifdef USE_PRIVATE_LIBGCC
TARGETS += $(LIBGCC)
endif
all: $(TARGETS)
$(LIB): $(obj).depend $(OBJS)
$(call cmd_link_o_target, $(OBJS))
$(LIBGCC): $(obj).depend $(LGOBJS)
$(call cmd_link_o_target, $(LGOBJS))
#########################################################################
# defines $(obj).depend target