acc9bfb5fa
By using arch->init() to set up some regular expressions to associate ins_ops to ARM instructions, ditching that old table that has instructions not present on ARM. Take advantage of having an arch->init() to hide more arm specific stuff from the common code, like the objdump details. The regular expressions comes from a patch written by Kim Phillips. Reviewed-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Chris Riyder <chris.ryder@arm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@arm.com> Cc: Markus Trippelsdorf <markus@trippelsdorf.de> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Cc: Taeung Song <treeze.taeung@gmail.com> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-77m7lufz9ajjimkrebtg5ead@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
60 lines
1.2 KiB
C
60 lines
1.2 KiB
C
#include <sys/types.h>
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#include <regex.h>
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struct arm_annotate {
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regex_t call_insn,
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jump_insn;
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};
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static struct ins_ops *arm__associate_instruction_ops(struct arch *arch, const char *name)
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{
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struct arm_annotate *arm = arch->priv;
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struct ins_ops *ops;
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regmatch_t match[2];
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if (!regexec(&arm->call_insn, name, 2, match, 0))
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ops = &call_ops;
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else if (!regexec(&arm->jump_insn, name, 2, match, 0))
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ops = &jump_ops;
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else
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return NULL;
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arch__associate_ins_ops(arch, name, ops);
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return ops;
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}
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static int arm__annotate_init(struct arch *arch)
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{
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struct arm_annotate *arm;
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int err;
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if (arch->initialized)
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return 0;
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arm = zalloc(sizeof(*arm));
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if (!arm)
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return -1;
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#define ARM_CONDS "(cc|cs|eq|ge|gt|hi|le|ls|lt|mi|ne|pl|vc|vs)"
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err = regcomp(&arm->call_insn, "^blx?" ARM_CONDS "?$", REG_EXTENDED);
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if (err)
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goto out_free_arm;
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err = regcomp(&arm->jump_insn, "^bx?" ARM_CONDS "?$", REG_EXTENDED);
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if (err)
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goto out_free_call;
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#undef ARM_CONDS
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arch->initialized = true;
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arch->priv = arm;
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arch->associate_instruction_ops = arm__associate_instruction_ops;
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arch->objdump.comment_char = ';';
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arch->objdump.skip_functions_char = '+';
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return 0;
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out_free_call:
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regfree(&arm->call_insn);
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out_free_arm:
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free(arm);
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return -1;
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}
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