diff options
| author | Dino Li <dino.li@ite.com.tw> | 2015-08-14 17:24:34 +0800 |
|---|---|---|
| committer | ChromeOS Commit Bot <chromeos-commit-bot@chromium.org> | 2015-08-14 14:34:26 +0000 |
| commit | 26984c7de4ac14347e8395e6e111677a707807f2 (patch) | |
| tree | e5f0b58ea5ea0175c44c4dc39026a7644819172e | |
| parent | 68088eb93fe2d275b4347ac25479d6b6cce52dd9 (diff) | |
| download | chrome-ec-26984c7de4ac14347e8395e6e111677a707807f2.tar.gz | |
it8380dev: add __muldi3.S
symptom:
Enable debugging and profiling statistics for hook functions
(#define CONFIG_HOOK_DEBUG), and __muldi3 function is missing
while link.
Signed-off-by: Dino Li <dino.li@ite.com.tw>
BRANCH=none
BUG=none
TEST=1. compile successful and hook_notify starting to print message.
2. console "hookstats"
Change-Id: Ia2815bcefd0f9ac06dab9c75ea6ee06312878ca2
Reviewed-on: https://chromium-review.googlesource.com/293432
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Commit-Queue: Dino Li <dino.li@ite.com.tw>
Tested-by: Dino Li <dino.li@ite.com.tw>
| -rw-r--r-- | core/nds32/__muldi3.S | 40 | ||||
| -rw-r--r-- | core/nds32/build.mk | 2 |
2 files changed, 41 insertions, 1 deletions
diff --git a/core/nds32/__muldi3.S b/core/nds32/__muldi3.S new file mode 100644 index 0000000000..ef4a491183 --- /dev/null +++ b/core/nds32/__muldi3.S @@ -0,0 +1,40 @@ +/* Copyright 2015 The Chromium OS Authors. All rights reserved. + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + * + * __muldi3.S: signed 64 bit multiplication + */ + +#define P1H $r1 +#define P1L $r0 +#define P2H $r3 +#define P2L $r2 + + .text + .align 2 + .globl __muldi3 + .type __muldi3, @function +__muldi3: + mul $r5, P1H, P2L ! (ah=a>>31)*(bl=b&0xffffffff) + srli P1H, P1L, 16 ! alh=al>>16 + maddr32 $r5, P1L, P2H ! ah*bl+(bh=b>>31)*(al=a&0xffffffff) + zeh P1L, P1L ! all=al&0xffff + srli P2H, P2L, 16 ! blh=bl>>16 + zeh P2L, P2L ! bll=bl&0xffff + + mul $ta, P1L, P2H ! zA=all*blh + mul $r4, P1L, P2L ! zl=all*bll + mul P2L, P1H, P2L ! zB=alh*bll + add P1L, $ta, P2L ! zA+=zB + slt $ta, P1L, P2L ! zA<zB + slli $ta, $ta, 16 ! (zA<zB)<<16 + slli P2L, P1L, 16 ! zA<<16 + maddr32 $ta, P1H, P2H ! zh=alh*blh+((zA<zB)<<16) + srli P1H, P1L, 16 ! zA>>16 + add P1H, P1H, $ta ! zh+=(zA>>16) + add P1L, $r4, P2L ! zl+=(zA<<16) + slt $ta, P1L, $r4 ! zl<zA + add P1H, P1H, $ta ! zh+=(zl<zA) + add P1H, P1H, $r5 ! zh+=ah*bl+bh*al + ret + .size __muldi3, .-__muldi3 diff --git a/core/nds32/build.mk b/core/nds32/build.mk index df89e3c8ac..d35f7d455e 100644 --- a/core/nds32/build.mk +++ b/core/nds32/build.mk @@ -12,4 +12,4 @@ CROSS_COMPILE?=nds32le-cros-elf- # CPU specific compilation flags CFLAGS_CPU+=-march=v3m -Os -core-y=cpu.o init.o panic.o task.o switch.o +core-y=cpu.o init.o panic.o task.o switch.o __muldi3.o |