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Date: Wed, 31 Jan 2018 01:42:02 +0300
From: Antony Pavlov <antonynpavlov@...il.com>
To: linux-mips@...ux-mips.org
Cc: James Hogan <jhogan@...nel.org>,
Ralf Baechle <ralf@...ux-mips.org>,
linux-kernel@...r.kernel.org, Palmer Dabbelt <palmer@...ive.com>,
Matt Redfearn <matt.redfearn@...s.com>
Subject: [PATCH v2 2/2] MIPS: use generic GCC library routines from lib/
The commit b35cd9884fa5 ("lib: Add shared copies of
some GCC library routines") makes it possible
to share generic GCC library routines by several
architectures.
This commit removes several generic GCC library
routines from arch/mips/lib/ in favour of similar
routines from lib/.
Signed-off-by: Antony Pavlov <antonynpavlov@...il.com>
Cc: Palmer Dabbelt <palmer@...ive.com>
Cc: Matt Redfearn <matt.redfearn@...s.com>
Cc: James Hogan <jhogan@...nel.org>
Cc: Ralf Baechle <ralf@...ux-mips.org>
Cc: linux-mips@...ux-mips.org
Cc: linux-kernel@...r.kernel.org
---
arch/mips/Kconfig | 5 +++++
arch/mips/lib/Makefile | 2 +-
arch/mips/lib/ashldi3.c | 30 ------------------------------
arch/mips/lib/ashrdi3.c | 32 --------------------------------
arch/mips/lib/cmpdi2.c | 28 ----------------------------
arch/mips/lib/lshrdi3.c | 30 ------------------------------
arch/mips/lib/ucmpdi2.c | 22 ----------------------
7 files changed, 6 insertions(+), 143 deletions(-)
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index 350a990fc719..6f786d576dd2 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -73,6 +73,11 @@ config MIPS
select RTC_LIB if !MACH_LOONGSON64
select SYSCTL_EXCEPTION_TRACE
select VIRT_TO_BUS
+ select GENERIC_ASHLDI3
+ select GENERIC_ASHRDI3
+ select GENERIC_CMPDI2
+ select GENERIC_LSHRDI3
+ select GENERIC_UCMPDI2
menu "Machine selection"
diff --git a/arch/mips/lib/Makefile b/arch/mips/lib/Makefile
index 78c2affeabf8..195ab4cb0840 100644
--- a/arch/mips/lib/Makefile
+++ b/arch/mips/lib/Makefile
@@ -16,4 +16,4 @@ obj-$(CONFIG_CPU_R3000) += r3k_dump_tlb.o
obj-$(CONFIG_CPU_TX39XX) += r3k_dump_tlb.o
# libgcc-style stuff needed in the kernel
-obj-y += ashldi3.o ashrdi3.o bswapsi.o bswapdi.o cmpdi2.o lshrdi3.o ucmpdi2.o
+obj-y += bswapsi.o bswapdi.o
diff --git a/arch/mips/lib/ashldi3.c b/arch/mips/lib/ashldi3.c
deleted file mode 100644
index 24cd6903e797..000000000000
--- a/arch/mips/lib/ashldi3.c
+++ /dev/null
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __ashldi3(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.low = 0;
- w.s.high = (unsigned int) uu.s.low << -bm;
- } else {
- const unsigned int carries = (unsigned int) uu.s.low >> bm;
-
- w.s.low = (unsigned int) uu.s.low << b;
- w.s.high = ((unsigned int) uu.s.high << b) | carries;
- }
-
- return w.ll;
-}
-
-EXPORT_SYMBOL(__ashldi3);
diff --git a/arch/mips/lib/ashrdi3.c b/arch/mips/lib/ashrdi3.c
deleted file mode 100644
index 23f5295af51e..000000000000
--- a/arch/mips/lib/ashrdi3.c
+++ /dev/null
@@ -1,32 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __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;
-}
-
-EXPORT_SYMBOL(__ashrdi3);
diff --git a/arch/mips/lib/cmpdi2.c b/arch/mips/lib/cmpdi2.c
deleted file mode 100644
index 93cfc785927d..000000000000
--- a/arch/mips/lib/cmpdi2.c
+++ /dev/null
@@ -1,28 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-word_type notrace __cmpdi2(long long a, long long b)
-{
- const DWunion au = {
- .ll = a
- };
- const DWunion bu = {
- .ll = b
- };
-
- if (au.s.high < bu.s.high)
- return 0;
- else if (au.s.high > bu.s.high)
- return 2;
-
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
-
- return 1;
-}
-
-EXPORT_SYMBOL(__cmpdi2);
diff --git a/arch/mips/lib/lshrdi3.c b/arch/mips/lib/lshrdi3.c
deleted file mode 100644
index 914b971aca3b..000000000000
--- a/arch/mips/lib/lshrdi3.c
+++ /dev/null
@@ -1,30 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-long long notrace __lshrdi3(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 = 0;
- w.s.low = (unsigned int) uu.s.high >> -bm;
- } else {
- const unsigned int carries = (unsigned int) uu.s.high << bm;
-
- w.s.high = (unsigned int) uu.s.high >> b;
- w.s.low = ((unsigned int) uu.s.low >> b) | carries;
- }
-
- return w.ll;
-}
-
-EXPORT_SYMBOL(__lshrdi3);
diff --git a/arch/mips/lib/ucmpdi2.c b/arch/mips/lib/ucmpdi2.c
deleted file mode 100644
index c31c78ca4175..000000000000
--- a/arch/mips/lib/ucmpdi2.c
+++ /dev/null
@@ -1,22 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-#include <linux/export.h>
-
-#include "libgcc.h"
-
-word_type notrace __ucmpdi2(unsigned long long a, unsigned long long b)
-{
- const DWunion au = {.ll = a};
- const DWunion bu = {.ll = b};
-
- if ((unsigned int) au.s.high < (unsigned int) bu.s.high)
- return 0;
- else if ((unsigned int) au.s.high > (unsigned int) bu.s.high)
- return 2;
- if ((unsigned int) au.s.low < (unsigned int) bu.s.low)
- return 0;
- else if ((unsigned int) au.s.low > (unsigned int) bu.s.low)
- return 2;
- return 1;
-}
-
-EXPORT_SYMBOL(__ucmpdi2);
--
2.11.0
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