arch/sh/kernel/ptrace.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 #include <linux/ptrace.h>
   3
   4 /**
   5  * regs_query_register_offset() - query register offset from its name
   6  * @name:       the name of a register
   7  *
   8  * regs_query_register_offset() returns the offset of a register in struct
   9  * pt_regs from its name. If the name is invalid, this returns -EINVAL;
  10  */
  11 int regs_query_register_offset(const char *name)
  12 {
  13         const struct pt_regs_offset *roff;
  14         for (roff = regoffset_table; roff->name != NULL; roff++)
  15                 if (!strcmp(roff->name, name))
  16                         return roff->offset;
  17         return -EINVAL;
  18 }
  19
  20 /**
  21  * regs_query_register_name() - query register name from its offset
  22  * @offset:     the offset of a register in struct pt_regs.
  23  *
  24  * regs_query_register_name() returns the name of a register from its
  25  * offset in struct pt_regs. If the @offset is invalid, this returns NULL;
  26  */
  27 const char *regs_query_register_name(unsigned int offset)
  28 {
  29         const struct pt_regs_offset *roff;
  30         for (roff = regoffset_table; roff->name != NULL; roff++)
  31                 if (roff->offset == offset)
  32                         return roff->name;
  33         return NULL;
  34 }