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1deab8ce2c
Pull sparc updates from David Miller:
1) Add missing cmpxchg64() for 32-bit sparc.
2) Timer conversions from Allen Pais and Kees Cook.
3) vDSO support, from Nagarathnam Muthusamy.
4) Fix sparc64 huge page table walks based upon bug report by Al Viro,
from Nitin Gupta.
5) Optimized fls() for T4 and above, from Vijay Kumar.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
sparc64: Fix page table walk for PUD hugepages
sparc64: Convert timers to user timer_setup()
sparc64: convert mdesc_handle.refcnt from atomic_t to refcount_t
sparc/led: Convert timers to use timer_setup()
sparc64: Use sparc optimized fls and __fls for T4 and above
sparc64: SPARC optimized __fls function
sparc64: SPARC optimized fls function
sparc64: Define SPARC default __fls function
sparc64: Define SPARC default fls function
vDSO for sparc
sparc32: Add cmpxchg64().
sbus: char: Move D7S_MINOR to include/linux/miscdevice.h
sparc: time: Remove unneeded linux/miscdevice.h include
sparc64: mmu_context: Add missing include files
65 lines
1.6 KiB
ArmAsm
65 lines
1.6 KiB
ArmAsm
/* SPDX-License-Identifier: GPL-2.0 */
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/* NG4patch.S: Patch Ultra-I routines with Niagara-4 variant.
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*
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* Copyright (C) 2012 David S. Miller <davem@davemloft.net>
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*/
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#include <linux/linkage.h>
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#define BRANCH_ALWAYS 0x10680000
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#define NOP 0x01000000
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#define NG_DO_PATCH(OLD, NEW) \
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sethi %hi(NEW), %g1; \
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or %g1, %lo(NEW), %g1; \
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sethi %hi(OLD), %g2; \
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or %g2, %lo(OLD), %g2; \
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sub %g1, %g2, %g1; \
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sethi %hi(BRANCH_ALWAYS), %g3; \
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sll %g1, 11, %g1; \
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srl %g1, 11 + 2, %g1; \
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or %g3, %lo(BRANCH_ALWAYS), %g3; \
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or %g3, %g1, %g3; \
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stw %g3, [%g2]; \
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sethi %hi(NOP), %g3; \
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or %g3, %lo(NOP), %g3; \
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stw %g3, [%g2 + 0x4]; \
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flush %g2;
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.globl niagara4_patch_copyops
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.type niagara4_patch_copyops,#function
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niagara4_patch_copyops:
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NG_DO_PATCH(memcpy, NG4memcpy)
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NG_DO_PATCH(raw_copy_from_user, NG4copy_from_user)
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NG_DO_PATCH(raw_copy_to_user, NG4copy_to_user)
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retl
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nop
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.size niagara4_patch_copyops,.-niagara4_patch_copyops
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.globl niagara4_patch_bzero
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.type niagara4_patch_bzero,#function
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niagara4_patch_bzero:
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NG_DO_PATCH(memset, NG4memset)
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NG_DO_PATCH(__bzero, NG4bzero)
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NG_DO_PATCH(__clear_user, NGclear_user)
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NG_DO_PATCH(tsb_init, NGtsb_init)
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retl
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nop
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.size niagara4_patch_bzero,.-niagara4_patch_bzero
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.globl niagara4_patch_pageops
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.type niagara4_patch_pageops,#function
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niagara4_patch_pageops:
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NG_DO_PATCH(copy_user_page, NG4copy_user_page)
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NG_DO_PATCH(_clear_page, NG4clear_page)
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NG_DO_PATCH(clear_user_page, NG4clear_user_page)
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retl
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nop
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.size niagara4_patch_pageops,.-niagara4_patch_pageops
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ENTRY(niagara4_patch_fls)
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NG_DO_PATCH(fls, NG4fls)
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NG_DO_PATCH(__fls, __NG4fls)
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retl
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nop
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ENDPROC(niagara4_patch_fls)
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