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1 // SPDX-License-Identifier: GPL-2.0

2 #include <linux/compiler.h>

static struct ins_ops *powerpc__associate_instruction_ops(struct arch *arch, const char *name)

6 int i;

7 struct ins_ops *ops;

9 /*

10 * - Interested only if instruction starts with 'b'.

11 * - Few start with 'b', but aren't branch instructions.

12 */

        if (name[0] != 'b'             ||

            !strncmp(name, "bcd", 3)   ||

            !strncmp(name, "brinc", 5) ||

            !strncmp(name, "bper", 4))

17 return NULL;

19 ops = &jump_ops;

        i = strlen(name) - 1;

        if (i < 0)

23 return NULL;

25 /* ignore optional hints at the end of the instructions */

        if (name[i] == '+' || name[i] == '-')

27 i--;

        if (name[i] == 'l' || (name[i] == 'a' && name[i-1] == 'l')) {

30 /*

31 * if the instruction ends up with 'l' or 'la', then

32 * those are considered 'calls' since they update LR.

33 * ... except for 'bnl' which is branch if not less than

34 * and the absolute form of the same.

35 */

                if (strcmp(name, "bnl") && strcmp(name, "bnl+") &&

                    strcmp(name, "bnl-") && strcmp(name, "bnla") &&

                    strcmp(name, "bnla+") && strcmp(name, "bnla-"))

39 ops = &call_ops;

40 }

        if (name[i] == 'r' && name[i-1] == 'l')

42 /*

43 * instructions ending with 'lr' are considered to be

44 * return instructions

45 */

46 ops = &ret_ops;

        arch__associate_ins_ops(arch, name, ops);

49 return ops;

static int powerpc__annotate_init(struct arch *arch, char *cpuid __maybe_unused)

54 if (!arch->initialized) {

55 arch->initialized = true;

56 arch->associate_instruction_ops = powerpc__associate_instruction_ops;

                arch->objdump.comment_char      = '#';

58 }

60 return 0;