OXIESEC PANEL

Name	Size	Modified	Perms
📁 ..	-	11/17/2022 06:42:15 AM	rwxr-xr-x
📄 Kbuild	886 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 asm-offsets.h	35 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 atomic.h	5.27 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 bitops.h	6.62 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 cache.h	1.16 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cacheflush.h	3.8 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 checksum.h	1.61 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 cmpxchg.h	2.55 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 delay.h	978 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma-mapping.h	1.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 dma.h	934 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 elf.h	6.34 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 exec.h	1.01 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fixmap.h	1.11 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 fpu.h	90 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 futex.h	2.25 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 hexagon_vm.h	6.39 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 intrinsics.h	1003 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 io.h	6.95 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 irq.h	1.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 irqflags.h	1.46 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 kgdb.h	1.36 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 linkage.h	871 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 mem-layout.h	3.42 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu.h	1.1 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 mmu_context.h	2.59 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 module.h	910 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 page.h	4.74 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 perf_event.h	841 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgalloc.h	4.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 pgtable.h	14.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 processor.h	3.8 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 smp.h	1.31 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 spinlock.h	3.84 KB	11/01/2022 04:52:05 PM	rw-r--r--
📄 spinlock_types.h	1.15 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 string.h	1.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 suspend.h	872 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 switch_to.h	1.09 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 syscall.h	1.38 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 thread_info.h	4.05 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 time.h	980 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 timer-regs.h	1.23 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 timex.h	1.13 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlb.h	1.21 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 tlbflush.h	2.08 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 traps.h	1.02 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 uaccess.h	3.67 KB	01/28/2018 09:20:33 PM	rw-r--r--
📄 vdso.h	941 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 vm_fault.h	993 bytes	01/28/2018 09:20:33 PM	rw-r--r--
📄 vm_mmu.h	3.37 KB	01/28/2018 09:20:33 PM	rw-r--r--

Editing: bitops.h

/*
 * Bit operations for the Hexagon architecture
 *
 * Copyright (c) 2010-2011, The Linux Foundation. All rights reserved.
 *
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 and
 * only version 2 as published by the Free Software Foundation.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
 * 02110-1301, USA.
 */

#ifndef _ASM_BITOPS_H
#define _ASM_BITOPS_H

#include <linux/compiler.h>
#include <asm/byteorder.h>
#include <asm/atomic.h>
#include <asm/barrier.h>

#ifdef __KERNEL__

/*
 * The offset calculations for these are based on BITS_PER_LONG == 32
 * (i.e. I get to shift by #5-2 (32 bits per long, 4 bytes per access),
 * mask by 0x0000001F)
 *
 * Typically, R10 is clobbered for address, R11 bit nr, and R12 is temp
 */

/**
 * test_and_clear_bit - clear a bit and return its old value
 * @nr:  bit number to clear
 * @addr:  pointer to memory
 */
static inline int test_and_clear_bit(int nr, volatile void *addr)
{
	int oldval;

__asm__ __volatile__ (
	"	{R10 = %1; R11 = asr(%2,#5); }\n"
	"	{R10 += asl(R11,#2); R11 = and(%2,#0x1f)}\n"
	"1:	R12 = memw_locked(R10);\n"
	"	{ P0 = tstbit(R12,R11); R12 = clrbit(R12,R11); }\n"
	"	memw_locked(R10,P1) = R12;\n"
	"	{if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n"
	: "=&r" (oldval)
	: "r" (addr), "r" (nr)
	: "r10", "r11", "r12", "p0", "p1", "memory"
	);

return oldval;
}

/**
 * test_and_set_bit - set a bit and return its old value
 * @nr:  bit number to set
 * @addr:  pointer to memory
 */
static inline int test_and_set_bit(int nr, volatile void *addr)
{
	int oldval;

__asm__ __volatile__ (
	"	{R10 = %1; R11 = asr(%2,#5); }\n"
	"	{R10 += asl(R11,#2); R11 = and(%2,#0x1f)}\n"
	"1:	R12 = memw_locked(R10);\n"
	"	{ P0 = tstbit(R12,R11); R12 = setbit(R12,R11); }\n"
	"	memw_locked(R10,P1) = R12;\n"
	"	{if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n"
	: "=&r" (oldval)
	: "r" (addr), "r" (nr)
	: "r10", "r11", "r12", "p0", "p1", "memory"
	);

return oldval;

}

/**
 * test_and_change_bit - toggle a bit and return its old value
 * @nr:  bit number to set
 * @addr:  pointer to memory
 */
static inline int test_and_change_bit(int nr, volatile void *addr)
{
	int oldval;

__asm__ __volatile__ (
	"	{R10 = %1; R11 = asr(%2,#5); }\n"
	"	{R10 += asl(R11,#2); R11 = and(%2,#0x1f)}\n"
	"1:	R12 = memw_locked(R10);\n"
	"	{ P0 = tstbit(R12,R11); R12 = togglebit(R12,R11); }\n"
	"	memw_locked(R10,P1) = R12;\n"
	"	{if (!P1) jump 1b; %0 = mux(P0,#1,#0);}\n"
	: "=&r" (oldval)
	: "r" (addr), "r" (nr)
	: "r10", "r11", "r12", "p0", "p1", "memory"
	);

return oldval;

}

/*
 * Atomic, but doesn't care about the return value.
 * Rewrite later to save a cycle or two.
 */

static inline void clear_bit(int nr, volatile void *addr)
{
	test_and_clear_bit(nr, addr);
}

static inline void set_bit(int nr, volatile void *addr)
{
	test_and_set_bit(nr, addr);
}

static inline void change_bit(int nr, volatile void *addr)
{
	test_and_change_bit(nr, addr);
}

/*
 * These are allowed to be non-atomic.  In fact the generic flavors are
 * in non-atomic.h.  Would it be better to use intrinsics for this?
 *
 * OK, writes in our architecture do not invalidate LL/SC, so this has to
 * be atomic, particularly for things like slab_lock and slab_unlock.
 *
 */
static inline void __clear_bit(int nr, volatile unsigned long *addr)
{
	test_and_clear_bit(nr, addr);
}

static inline void __set_bit(int nr, volatile unsigned long *addr)
{
	test_and_set_bit(nr, addr);
}

static inline void __change_bit(int nr, volatile unsigned long *addr)
{
	test_and_change_bit(nr, addr);
}

/*  Apparently, at least some of these are allowed to be non-atomic  */
static inline int __test_and_clear_bit(int nr, volatile unsigned long *addr)
{
	return test_and_clear_bit(nr, addr);
}

static inline int __test_and_set_bit(int nr, volatile unsigned long *addr)
{
	return test_and_set_bit(nr, addr);
}

static inline int __test_and_change_bit(int nr, volatile unsigned long *addr)
{
	return test_and_change_bit(nr, addr);
}

static inline int __test_bit(int nr, const volatile unsigned long *addr)
{
	int retval;

asm volatile(
	"{P0 = tstbit(%1,%2); if (P0.new) %0 = #1; if (!P0.new) %0 = #0;}\n"
	: "=&r" (retval)
	: "r" (addr[BIT_WORD(nr)]), "r" (nr % BITS_PER_LONG)
	: "p0"
	);

return retval;
}

#define test_bit(nr, addr) __test_bit(nr, addr)

/*
 * ffz - find first zero in word.
 * @word: The word to search
 *
 * Undefined if no zero exists, so code should check against ~0UL first.
 */
static inline long ffz(int x)
{
	int r;

asm("%0 = ct1(%1);\n"
		: "=&r" (r)
		: "r" (x));
	return r;
}

/*
 * fls - find last (most-significant) bit set
 * @x: the word to search
 *
 * This is defined the same way as ffs.
 * Note fls(0) = 0, fls(1) = 1, fls(0x80000000) = 32.
 */
static inline int fls(int x)
{
	int r;

asm("{ %0 = cl0(%1);}\n"
		"%0 = sub(#32,%0);\n"
		: "=&r" (r)
		: "r" (x)
		: "p0");

return r;
}

/*
 * ffs - find first bit set
 * @x: the word to search
 *
 * This is defined the same way as
 * the libc and compiler builtin ffs routines, therefore
 * differs in spirit from the above ffz (man ffs).
 */
static inline int ffs(int x)
{
	int r;

asm("{ P0 = cmp.eq(%1,#0); %0 = ct0(%1);}\n"
		"{ if (P0) %0 = #0; if (!P0) %0 = add(%0,#1);}\n"
		: "=&r" (r)
		: "r" (x)
		: "p0");

return r;
}

/*
 * __ffs - find first bit in word.
 * @word: The word to search
 *
 * Undefined if no bit exists, so code should check against 0 first.
 *
 * bits_per_long assumed to be 32
 * numbering starts at 0 I think (instead of 1 like ffs)
 */
static inline unsigned long __ffs(unsigned long word)
{
	int num;

asm("%0 = ct0(%1);\n"
		: "=&r" (num)
		: "r" (word));

return num;
}

/*
 * __fls - find last (most-significant) set bit in a long word
 * @word: the word to search
 *
 * Undefined if no set bit exists, so code should check against 0 first.
 * bits_per_long assumed to be 32
 */
static inline unsigned long __fls(unsigned long word)
{
	int num;

asm("%0 = cl0(%1);\n"
		"%0 = sub(#31,%0);\n"
		: "=&r" (num)
		: "r" (word));

return num;
}

#include <asm-generic/bitops/lock.h>
#include <asm-generic/bitops/find.h>

#include <asm-generic/bitops/fls64.h>
#include <asm-generic/bitops/sched.h>
#include <asm-generic/bitops/hweight.h>

#include <asm-generic/bitops/le.h>
#include <asm-generic/bitops/ext2-atomic.h>

#endif /* __KERNEL__ */
#endif