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authorMarek Vasut <marex@denx.de>2012-08-12 16:53:35 +0200
committerDaniel Schwierzeck <daniel.schwierzeck@gmail.com>2012-08-17 20:13:48 +0200
commitd2aa5dca74fcf8cbe7fa1f27606a5663bb52d3e6 (patch)
tree107ccecbec29b60ebea248200b7c767b9e279e63 /arch/mips/lib/ashrdi3.c
parent9a16f310c0182e0744341b85c43ec8c4f50ae4dc (diff)
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dm: mips: Import libgcc components from Linux
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>
Diffstat (limited to 'arch/mips/lib/ashrdi3.c')
-rw-r--r--arch/mips/lib/ashrdi3.c27
1 files changed, 27 insertions, 0 deletions
diff --git a/arch/mips/lib/ashrdi3.c b/arch/mips/lib/ashrdi3.c
new file mode 100644
index 0000000..f30359b
--- /dev/null
+++ b/arch/mips/lib/ashrdi3.c
@@ -0,0 +1,27 @@
+#include "libgcc.h"
+
+long long __ashrdi3(long long u, word_type b)
+{
+ DWunion uu, w;
+ word_type bm;
+
+ if (b == 0)
+ return u;
+
+ uu.ll = u;
+ bm = 32 - b;
+
+ if (bm <= 0) {
+ /* w.s.high = 1..1 or 0..0 */
+ w.s.high =
+ uu.s.high >> 31;
+ w.s.low = uu.s.high >> -bm;
+ } else {
+ const unsigned int carries = (unsigned int) uu.s.high << bm;
+
+ w.s.high = uu.s.high >> b;
+ w.s.low = ((unsigned int) uu.s.low >> b) | carries;
+ }
+
+ return w.ll;
+}