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Commit 709972b1 authored by H. Peter Anvin's avatar H. Peter Anvin
Browse files

x86, asm: Make _ASM_EXTABLE() usable from assembly code 



We have had this convenient macro _ASM_EXTABLE() to generate exception
table entry in inline assembly.  Make it also usable for pure
assembly.

Signed-off-by: default avatarH. Peter Anvin <hpa@zytor.com>
parent fe9b4e4e

arch/x86/include/asm/asm.h

+9 −1
Original line number Diff line number Diff line
@@ -3,7 +3,7 @@ 


#ifdef __ASSEMBLY__

# define __ASM_FORM(x)	x

# define __ASM_EX_SEC	.section __ex_table

# define __ASM_EX_SEC	.section __ex_table, "a"

#else

# define __ASM_FORM(x)	" " #x " "

# define __ASM_EX_SEC	" .section __ex_table,\"a\"\n"
@@ -38,10 +38,18 @@ 
#define _ASM_DI		__ASM_REG(di)



/* Exception table entry */

#ifdef __ASSEMBLY__

# define _ASM_EXTABLE(from,to)	    \

	__ASM_EX_SEC ;		    \

	_ASM_ALIGN ;		    \

	_ASM_PTR from , to ;	    \

	.previous

#else

# define _ASM_EXTABLE(from,to) \

	__ASM_EX_SEC	\

	_ASM_ALIGN "\n" \

	_ASM_PTR #from "," #to "\n" \

	" .previous\n"

#endif



#endif /* _ASM_X86_ASM_H */