cregit-Linux how code gets into the kernel

Release 4.14 arch/sh/include/asm/bitops-grb.h

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __ASM_SH_BITOPS_GRB_H

#define __ASM_SH_BITOPS_GRB_H


static inline void set_bit(int nr, volatile void * addr) { int mask; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = 1 << (nr & 0x1f); __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ " mov.l @%1, %0 \n\t" /* load old value */ " or %2, %0 \n\t" /* or */ " mov.l %0, @%1 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "+r" (a) : "r" (mask) : "memory" , "r0", "r1"); }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy63100.00%1100.00%
Total63100.00%1100.00%


static inline void clear_bit(int nr, volatile void * addr) { int mask; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = ~(1 << (nr & 0x1f)); __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ " mov.l @%1, %0 \n\t" /* load old value */ " and %2, %0 \n\t" /* and */ " mov.l %0, @%1 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "+r" (a) : "r" (mask) : "memory" , "r0", "r1"); }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy66100.00%1100.00%
Total66100.00%1100.00%


static inline void change_bit(int nr, volatile void * addr) { int mask; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = 1 << (nr & 0x1f); __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-6, r15 \n\t" /* LOGIN: r15 = size */ " mov.l @%1, %0 \n\t" /* load old value */ " xor %2, %0 \n\t" /* xor */ " mov.l %0, @%1 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "+r" (a) : "r" (mask) : "memory" , "r0", "r1"); }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy63100.00%1100.00%
Total63100.00%1100.00%


static inline int test_and_set_bit(int nr, volatile void * addr) { int mask, retval; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = 1 << (nr & 0x1f); __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-14, r15 \n\t" /* LOGIN: r15 = size */ " mov.l @%2, %0 \n\t" /* load old value */ " mov %0, %1 \n\t" " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ " mov #-1, %1 \n\t" /* retvat = -1 */ " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ " or %3, %0 \n\t" " mov.l %0, @%2 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "=&r" (retval), "+r" (a) : "r" (mask) : "memory" , "r0", "r1" ,"t"); return retval; }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy72100.00%1100.00%
Total72100.00%1100.00%


static inline int test_and_clear_bit(int nr, volatile void * addr) { int mask, retval,not_mask; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = 1 << (nr & 0x1f); not_mask = ~mask; __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-14, r15 \n\t" /* LOGIN */ " mov.l @%2, %0 \n\t" /* load old value */ " mov %0, %1 \n\t" /* %1 = *a */ " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ " mov #-1, %1 \n\t" /* retvat = -1 */ " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ " and %4, %0 \n\t" " mov.l %0, @%2 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "=&r" (retval), "+r" (a) : "r" (mask), "r" (not_mask) : "memory" , "r0", "r1", "t"); return retval; }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy81100.00%1100.00%
Total81100.00%1100.00%


static inline int test_and_change_bit(int nr, volatile void * addr) { int mask, retval; volatile unsigned int *a = addr; unsigned long tmp; a += nr >> 5; mask = 1 << (nr & 0x1f); __asm__ __volatile__ ( " .align 2 \n\t" " mova 1f, r0 \n\t" /* r0 = end point */ " mov r15, r1 \n\t" /* r1 = saved sp */ " mov #-14, r15 \n\t" /* LOGIN */ " mov.l @%2, %0 \n\t" /* load old value */ " mov %0, %1 \n\t" /* %1 = *a */ " tst %1, %3 \n\t" /* T = ((*a & mask) == 0) */ " mov #-1, %1 \n\t" /* retvat = -1 */ " negc %1, %1 \n\t" /* retval = (mask & *a) != 0 */ " xor %3, %0 \n\t" " mov.l %0, @%2 \n\t" /* store new value */ "1: mov r1, r15 \n\t" /* LOGOUT */ : "=&r" (tmp), "=&r" (retval), "+r" (a) : "r" (mask) : "memory" , "r0", "r1", "t"); return retval; }

Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy74100.00%1100.00%
Total74100.00%1100.00%

#include <asm-generic/bitops/non-atomic.h> #endif /* __ASM_SH_BITOPS_GRB_H */

Overall Contributors

PersonTokensPropCommitsCommitProp
Stuart Menefy42899.07%133.33%
Paul Mundt30.69%133.33%
Greg Kroah-Hartman10.23%133.33%
Total432100.00%3100.00%
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