#ifndef __ASM_POWERPC_FEATURE_FIXUPS_H
#define __ASM_POWERPC_FEATURE_FIXUPS_H
/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#ifdef __ASSEMBLY__
/*
* Feature section common macros
*
* Note that the entries now contain offsets between the table entry
* and the code rather than absolute code pointers in order to be
* useable with the vdso shared library. There is also an assumption
* that values will be negative, that is, the fixup table has to be
* located after the code it fixes up.
*/
#if defined(CONFIG_PPC64) && !defined(__powerpc64__)
/* 64 bits kernel, 32 bits code (ie. vdso32) */
#define FTR_ENTRY_LONG .llong
#define FTR_ENTRY_OFFSET .long 0xffffffff; .long
#else
/* 64 bit kernel 64 bit code, or 32 bit kernel 32 bit code */
#define FTR_ENTRY_LONG PPC_LONG
#define FTR_ENTRY_OFFSET PPC_LONG
#endif
#define START_FTR_SECTION(label) label##1:
#define FTR_SECTION_ELSE_NESTED(label) \
label##2: \
.pushsection __ftr_alt_##label,"a"; \
.align 2; \
label##3:
#define MAKE_FTR_SECTION_ENTRY(msk, val, label, sect) \
label##4: \
.popsection; \
.pushsection sect,"a"; \
.align 3; \
label##5: \
FTR_ENTRY_LONG msk; \
FTR_ENTRY_LONG val; \
FTR_ENTRY_OFFSET label##1b-label##5b; \
FTR_ENTRY_OFFSET label##2b-label##5b; \
FTR_ENTRY_OFFSET label##3b-label##5b; \
FTR_ENTRY_OFFSET label##4b-label##5b; \
.popsection;
/* CPU feature dependent sections */
#define BEGIN_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
#define BEGIN_FTR_SECTION START_FTR_SECTION(97)
#define END_FTR_SECTION_NESTED(msk, val, label) \
FTR_SECTION_ELSE_NESTED(label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
#define END_FTR_SECTION(msk, val) \
END_FTR_SECTION_NESTED(msk, val, 97)
#define END_FTR_SECTION_IFSET(msk) END_FTR_SECTION((msk), (msk))
#define END_FTR_SECTION_IFCLR(msk) END_FTR_SECTION((msk), 0)
/* CPU feature sections with alternatives, use BEGIN_FTR_SECTION to start */
#define FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97)
#define ALT_FTR_SECTION_END_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __ftr_fixup)
#define ALT_FTR_SECTION_END_NESTED_IFSET(msk, label) \
ALT_FTR_SECTION_END_NESTED(msk, msk, label)
#define ALT_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
ALT_FTR_SECTION_END_NESTED(msk, 0, label)
#define ALT_FTR_SECTION_END(msk, val) \
ALT_FTR_SECTION_END_NESTED(msk, val, 97)
#define ALT_FTR_SECTION_END_IFSET(msk) \
ALT_FTR_SECTION_END_NESTED_IFSET(msk, 97)
#define ALT_FTR_SECTION_END_IFCLR(msk) \
ALT_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
/* Firmware feature dependent sections */
#define BEGIN_FW_FTR_SECTION_NESTED(label) START_FTR_SECTION(label)
#define BEGIN_FW_FTR_SECTION START_FTR_SECTION(97)
#define END_FW_FTR_SECTION_NESTED(msk, val, label) \
FTR_SECTION_ELSE_NESTED(label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
#define END_FW_FTR_SECTION(msk, val) \
END_FW_FTR_SECTION_NESTED(msk, val, 97)
#define END_FW_FTR_SECTION_IFSET(msk) END_FW_FTR_SECTION((msk), (msk))
#define END_FW_FTR_SECTION_IFCLR(msk) END_FW_FTR_SECTION((msk), 0)
/* Firmware feature sections with alternatives */
#define FW_FTR_SECTION_ELSE_NESTED(label) FTR_SECTION_ELSE_NESTED(label)
#define FW_FTR_SECTION_ELSE FTR_SECTION_ELSE_NESTED(97)
#define ALT_FW_FTR_SECTION_END_NESTED(msk, val, label) \
MAKE_FTR_SECTION_ENTRY(msk, val, label, __fw_ftr_fixup)
#define ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, label) \
ALT_FW_FTR_SECTION_END_NESTED(msk, msk, label)
#define ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, label) \
ALT_FW_FTR_SECTION_END_NESTED(msk, 0, label)
#define ALT_FW_FTR_SECTION_END(msk, val) \
ALT_FW_FTR_SECTION_END_NESTED(msk, val, 97)
#define ALT_FW_FTR_SECTION_END_IFSET(msk) \
ALT_FW_FTR_SECTION_END_NESTED_IFSET(msk, 97)
#define ALT_FW_FTR_SECTION_END_IFCLR(msk) \
ALT_FW_FTR_SECTION_END_NESTED_IFCLR(msk, 97)
#endif /* __ASSEMBLY__ */
/* LWSYNC feature sections */
#define START_LWSYNC_SECTION(label) label##1:
#define MAKE_LWSYNC_SECTION_ENTRY(label, sect) \
label##2: \
.pushsection sect,"a"; \
.align 2; \
label##3: \
.long label##1b-label##3b; \
.popsection;
#endif /* __ASM_POWERPC_FEATURE_FIXUPS_H */
