1*4882a593Smuzhiyun // SPDX-License-Identifier: GPL-2.0
2*4882a593Smuzhiyun #include <linux/compiler.h>
3*4882a593Smuzhiyun #include <linux/zalloc.h>
4*4882a593Smuzhiyun #include <sys/types.h>
5*4882a593Smuzhiyun #include <regex.h>
6*4882a593Smuzhiyun #include <stdlib.h>
7*4882a593Smuzhiyun
8*4882a593Smuzhiyun struct arm_annotate {
9*4882a593Smuzhiyun regex_t call_insn,
10*4882a593Smuzhiyun jump_insn;
11*4882a593Smuzhiyun };
12*4882a593Smuzhiyun
arm__associate_instruction_ops(struct arch * arch,const char * name)13*4882a593Smuzhiyun static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name)
14*4882a593Smuzhiyun {
15*4882a593Smuzhiyun struct arm_annotate *arm = arch->priv;
16*4882a593Smuzhiyun struct ins_ops *ops;
17*4882a593Smuzhiyun regmatch_t match[2];
18*4882a593Smuzhiyun
19*4882a593Smuzhiyun if (!regexec(&arm->call_insn, name, 2, match, 0))
20*4882a593Smuzhiyun ops = &call_ops;
21*4882a593Smuzhiyun else if (!regexec(&arm->jump_insn, name, 2, match, 0))
22*4882a593Smuzhiyun ops = &jump_ops;
23*4882a593Smuzhiyun else
24*4882a593Smuzhiyun return NULL;
25*4882a593Smuzhiyun
26*4882a593Smuzhiyun arch__associate_ins_ops(arch, name, ops);
27*4882a593Smuzhiyun return ops;
28*4882a593Smuzhiyun }
29*4882a593Smuzhiyun
arm__annotate_init(struct arch * arch,char * cpuid __maybe_unused)30*4882a593Smuzhiyun static int arm__annotate_init(struct arch *arch, char *cpuid __maybe_unused)
31*4882a593Smuzhiyun {
32*4882a593Smuzhiyun struct arm_annotate *arm;
33*4882a593Smuzhiyun int err;
34*4882a593Smuzhiyun
35*4882a593Smuzhiyun if (arch->initialized)
36*4882a593Smuzhiyun return 0;
37*4882a593Smuzhiyun
38*4882a593Smuzhiyun arm = zalloc(sizeof(*arm));
39*4882a593Smuzhiyun if (!arm)
40*4882a593Smuzhiyun return ENOMEM;
41*4882a593Smuzhiyun
42*4882a593Smuzhiyun #define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)"
43*4882a593Smuzhiyun err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED);
44*4882a593Smuzhiyun if (err)
45*4882a593Smuzhiyun goto out_free_arm;
46*4882a593Smuzhiyun err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED);
47*4882a593Smuzhiyun if (err)
48*4882a593Smuzhiyun goto out_free_call;
49*4882a593Smuzhiyun #undef ARM_CONDS
50*4882a593Smuzhiyun
51*4882a593Smuzhiyun arch->initialized = true;
52*4882a593Smuzhiyun arch->priv = arm;
53*4882a593Smuzhiyun arch->associate_instruction_ops = arm__associate_instruction_ops;
54*4882a593Smuzhiyun arch->objdump.comment_char = ';';
55*4882a593Smuzhiyun arch->objdump.skip_functions_char = '+';
56*4882a593Smuzhiyun return 0;
57*4882a593Smuzhiyun
58*4882a593Smuzhiyun out_free_call:
59*4882a593Smuzhiyun regfree(&arm->call_insn);
60*4882a593Smuzhiyun out_free_arm:
61*4882a593Smuzhiyun free(arm);
62*4882a593Smuzhiyun return SYMBOL_ANNOTATE_ERRNO__ARCH_INIT_REGEXP;
63*4882a593Smuzhiyun }
64