| 1 | // SPDX-License-Identifier: GPL-2.0 |
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| 2 | #include <linux/ptrace.h> |
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| 3 | |
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| 4 | /** |
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| 5 | * regs_query_register_offset() - query register offset from its name |
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| 6 | * @name: the name of a register |
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| 7 | * |
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| 8 | * regs_query_register_offset() returns the offset of a register in struct |
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| 9 | * pt_regs from its name. If the name is invalid, this returns -EINVAL; |
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| 10 | */ |
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| 11 | int regs_query_register_offset(const char *name) |
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| 12 | { |
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| 13 | const struct pt_regs_offset *roff; |
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| 14 | for (roff = regoffset_table; roff->name != NULL; roff++) |
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| 15 | if (!strcmp(roff->name, name)) |
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| 16 | return roff->offset; |
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| 17 | return -EINVAL; |
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| 18 | } |
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| 19 | |
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| 20 | /** |
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| 21 | * regs_query_register_name() - query register name from its offset |
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| 22 | * @offset: the offset of a register in struct pt_regs. |
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| 23 | * |
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| 24 | * regs_query_register_name() returns the name of a register from its |
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| 25 | * offset in struct pt_regs. If the @offset is invalid, this returns NULL; |
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| 26 | */ |
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| 27 | const char *regs_query_register_name(unsigned int offset) |
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| 28 | { |
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| 29 | const struct pt_regs_offset *roff; |
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| 30 | for (roff = regoffset_table; roff->name != NULL; roff++) |
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| 31 | if (roff->offset == offset) |
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| 32 | return roff->name; |
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| 33 | return NULL; |
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| 34 | } |
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| 35 | |
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