cregit-Linux how code gets into the kernel

Release 4.10 tools/perf/arch/arm64/annotate/instructions.c

#include <sys/types.h>
#include <regex.h>


struct arm64_annotate {
	
regex_t call_insn,
		
jump_insn;
};


static struct ins_ops *arm64__associate_instruction_ops(struct arch *arch, const char *name) { struct arm64_annotate *arm = arch->priv; struct ins_ops *ops; regmatch_t match[2]; if (!regexec(&arm->jump_insn, name, 2, match, 0)) ops = &jump_ops; else if (!regexec(&arm->call_insn, name, 2, match, 0)) ops = &call_ops; else if (!strcmp(name, "ret")) ops = &ret_ops; else return NULL; arch__associate_ins_ops(arch, name, ops); return ops; }

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kim phillipskim phillips119100.00%1100.00%
Total119100.00%1100.00%


static int arm64__annotate_init(struct arch *arch) { struct arm64_annotate *arm; int err; if (arch->initialized) return 0; arm = zalloc(sizeof(*arm)); if (!arm) return -1; /* bl, blr */ err = regcomp(&arm->call_insn, "^blr?$", REG_EXTENDED); if (err) goto out_free_arm; /* b, b.cond, br, cbz/cbnz, tbz/tbnz */ err = regcomp(&arm->jump_insn, "^[ct]?br?\\.?(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl)?n?z?$", REG_EXTENDED); if (err) goto out_free_call; arch->initialized = true; arch->priv = arm; arch->associate_instruction_ops = arm64__associate_instruction_ops; arch->objdump.comment_char = ';'; arch->objdump.skip_functions_char = '+'; return 0; out_free_call: regfree(&arm->call_insn); out_free_arm: free(arm); return -1; }

Contributors

PersonTokensPropCommitsCommitProp
kim phillipskim phillips150100.00%1100.00%
Total150100.00%1100.00%


Overall Contributors

PersonTokensPropCommitsCommitProp
kim phillipskim phillips285100.00%1100.00%
Total285100.00%1100.00%
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