From: Nathan Chancellor <nathan@kernel.org>
To: Huacai Chen <chenhuacai@kernel.org>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Nick Desaulniers <ndesaulniers@google.com>,
Sergey Shtylyov <s.shtylyov@omp.ru>,
linux-mips@vger.kernel.org, linux-kernel@vger.kernel.org,
llvm@lists.linux.dev, Nathan Chancellor <nathan@kernel.org>,
Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Subject: [PATCH v2] MIPS: Loongson64: Use three arguments for slti
Date: Wed, 8 Dec 2021 09:56:17 -0700 [thread overview]
Message-ID: <20211208165616.1746108-1-nathan@kernel.org> (raw)
LLVM's integrated assembler does not support 'slti <reg>, <imm>':
<instantiation>:16:12: error: invalid operand for instruction
slti $12, (0x6300 | 0x0008)
^
arch/mips/kernel/head.S:86:2: note: while in macro instantiation
kernel_entry_setup # cpu specific setup
^
<instantiation>:16:12: error: invalid operand for instruction
slti $12, (0x6300 | 0x0008)
^
arch/mips/kernel/head.S:150:2: note: while in macro instantiation
smp_slave_setup
^
To increase compatibility with LLVM's integrated assembler, use the full
form of 'slti <reg>, <reg>, <imm>', which matches the rest of
arch/mips/. This does not result in any change for GNU as.
Link: https://github.com/ClangBuiltLinux/linux/issues/1526
Reported-by: Ryutaroh Matsumoto <ryutaroh@ict.e.titech.ac.jp>
Signed-off-by: Nathan Chancellor <nathan@kernel.org>
---
v1 -> v2: https://lore.kernel.org/r/20211207170129.578089-1-nathan@kernel.org/
* Fix typos in commit message ("stli" -> "slti") [Sergey]
arch/mips/include/asm/mach-loongson64/kernel-entry-init.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
index 13373c5144f8..efb41b351974 100644
--- a/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
+++ b/arch/mips/include/asm/mach-loongson64/kernel-entry-init.h
@@ -32,7 +32,7 @@
nop
/* Loongson-3A R2/R3 */
andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
- slti t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
+ slti t0, t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
bnez t0, 2f
nop
1:
@@ -63,7 +63,7 @@
nop
/* Loongson-3A R2/R3 */
andi t0, (PRID_IMP_MASK | PRID_REV_MASK)
- slti t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
+ slti t0, t0, (PRID_IMP_LOONGSON_64C | PRID_REV_LOONGSON3A_R2_0)
bnez t0, 2f
nop
1:
base-commit: 0fcfb00b28c0b7884635dacf38e46d60bf3d4eb1
--
2.34.1
next reply other threads:[~2021-12-08 16:57 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-08 16:56 Nathan Chancellor [this message]
2021-12-09 9:31 ` [PATCH v2] MIPS: Loongson64: Use three arguments for slti Thomas Bogendoerfer
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