01f2cf0b99
In a subsequent patch, we would want to annotate powerpc assembly functions
with SYM_FUNC_START_LOCAL macro. This macro depends on __ALIGN macro.
The default expansion of __ALIGN macro is:
#define __ALIGN .align 4,0x90
So, override __ALIGN and __ALIGN_STR macros to use the same alignment as
that of the existing _GLOBAL macro. Also, do not pad with 0x90, because
repeated 0x90s are not a nop or trap on powerpc.
Tested-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Acked-by: Josh Poimboeuf <jpoimboe@kernel.org>
Signed-off-by: Sathvika Vasireddy <sv@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20221114175754.1131267-3-sv@linux.ibm.com
20 lines
566 B
C
20 lines
566 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_POWERPC_LINKAGE_H
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#define _ASM_POWERPC_LINKAGE_H
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#include <asm/types.h>
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#define __ALIGN .align 2
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#define __ALIGN_STR ".align 2"
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#ifdef CONFIG_PPC64_ELF_ABI_V1
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#define cond_syscall(x) \
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asm ("\t.weak " #x "\n\t.set " #x ", sys_ni_syscall\n" \
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"\t.weak ." #x "\n\t.set ." #x ", .sys_ni_syscall\n")
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#define SYSCALL_ALIAS(alias, name) \
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asm ("\t.globl " #alias "\n\t.set " #alias ", " #name "\n" \
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"\t.globl ." #alias "\n\t.set ." #alias ", ." #name)
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#endif
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#endif /* _ASM_POWERPC_LINKAGE_H */
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