Public Git Hosting - linux/fpc-iii.git/blob - tools/perf/arch/arm/annotate/instructions.c

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

2 #include <linux/compiler.h>

3 #include <sys/types.h>

4 #include <regex.h>

6 struct arm_annotate {

7 regex_t call_insn,

8 jump_insn;

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

        struct arm_annotate *arm = arch->priv;

14 struct ins_ops *ops;

15 regmatch_t match[2];

        if (!regexec(&arm->call_insn, name, 2, match, 0))

18 ops = &call_ops;

        else if (!regexec(&arm->jump_insn, name, 2, match, 0))

20 ops = &jump_ops;

21 else

22 return NULL;

        arch__associate_ins_ops(arch, name, ops);

25 return ops;

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

30 struct arm_annotate *arm;

31 int err;

33 if (arch->initialized)

34 return 0;

        arm = zalloc(sizeof(*arm));

37 if (!arm)

38 return -1;

40 #define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)"

        err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED);

42 if (err)

43 goto out_free_arm;

        err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED);

45 if (err)

46 goto out_free_call;

47 #undef ARM_CONDS

49 arch->initialized = true;

50 arch->priv = arm;

51 arch->associate_instruction_ops = arm__associate_instruction_ops;

        arch->objdump.comment_char        = ';';

        arch->objdump.skip_functions_char = '+';

54 return 0;

56 out_free_call:

57 regfree(&arm->call_insn);

58 out_free_arm:

59 free(arm);

60 return -1;