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authorAlex Shi <alex.shi@linaro.org>2017-03-20 12:03:10 +0800
committerAlex Shi <alex.shi@linaro.org>2017-03-20 12:03:10 +0800
commite0d60977f25c7a33b2acda240a1d121bf0a35deb (patch)
tree4f930533fa1e36e0ec75ee8bcaa82d2320985a2c /arch/mips/mm/sc-ip22.c
parent4304568925f8191755da36df5c61abb69db9b1b0 (diff)
parent1c563c0006661025d7a6c9bc85fc889a4e8a1c06 (diff)
downloadlinux-linaro-stable-lsk-v4.4-17.03-android.tar.gz
Merge branch 'linux-linaro-lsk-v4.4' into linux-linaro-lsk-v4.4-androidlsk-v4.4-17.03-android
Diffstat (limited to 'arch/mips/mm/sc-ip22.c')
-rw-r--r--arch/mips/mm/sc-ip22.c54
1 files changed, 34 insertions, 20 deletions
diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c
index dc7c5a5214a9..efaf364fe581 100644
--- a/arch/mips/mm/sc-ip22.c
+++ b/arch/mips/mm/sc-ip22.c
@@ -31,26 +31,40 @@ static inline void indy_sc_wipe(unsigned long first, unsigned long last)
unsigned long tmp;
__asm__ __volatile__(
- ".set\tpush\t\t\t# indy_sc_wipe\n\t"
- ".set\tnoreorder\n\t"
- ".set\tmips3\n\t"
- ".set\tnoat\n\t"
- "mfc0\t%2, $12\n\t"
- "li\t$1, 0x80\t\t\t# Go 64 bit\n\t"
- "mtc0\t$1, $12\n\t"
-
- "dli\t$1, 0x9000000080000000\n\t"
- "or\t%0, $1\t\t\t# first line to flush\n\t"
- "or\t%1, $1\t\t\t# last line to flush\n\t"
- ".set\tat\n\t"
-
- "1:\tsw\t$0, 0(%0)\n\t"
- "bne\t%0, %1, 1b\n\t"
- " daddu\t%0, 32\n\t"
-
- "mtc0\t%2, $12\t\t\t# Back to 32 bit\n\t"
- "nop; nop; nop; nop;\n\t"
- ".set\tpop"
+ " .set push # indy_sc_wipe \n"
+ " .set noreorder \n"
+ " .set mips3 \n"
+ " .set noat \n"
+ " mfc0 %2, $12 \n"
+ " li $1, 0x80 # Go 64 bit \n"
+ " mtc0 $1, $12 \n"
+ " \n"
+ " # \n"
+ " # Open code a dli $1, 0x9000000080000000 \n"
+ " # \n"
+ " # Required because binutils 2.25 will happily accept \n"
+ " # 64 bit instructions in .set mips3 mode but puke on \n"
+ " # 64 bit constants when generating 32 bit ELF \n"
+ " # \n"
+ " lui $1,0x9000 \n"
+ " dsll $1,$1,0x10 \n"
+ " ori $1,$1,0x8000 \n"
+ " dsll $1,$1,0x10 \n"
+ " \n"
+ " or %0, $1 # first line to flush \n"
+ " or %1, $1 # last line to flush \n"
+ " .set at \n"
+ " \n"
+ "1: sw $0, 0(%0) \n"
+ " bne %0, %1, 1b \n"
+ " daddu %0, 32 \n"
+ " \n"
+ " mtc0 %2, $12 # Back to 32 bit \n"
+ " nop # pipeline hazard \n"
+ " nop \n"
+ " nop \n"
+ " nop \n"
+ " .set pop \n"
: "=r" (first), "=r" (last), "=&r" (tmp)
: "0" (first), "1" (last));
}